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Date: Thu, 20 Apr 2023 12:31:35 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, jslaby@...e.cz,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Linux 5.10.178
diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index eda3d2c6bdd3..dbaa04380209 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -74,7 +74,7 @@ properties:
- description: Error interrupt
- description: Receive buffer full interrupt
- description: Transmit buffer empty interrupt
- - description: Transmit End interrupt
+ - description: Break interrupt
- items:
- description: Error interrupt
- description: Receive buffer full interrupt
@@ -89,7 +89,7 @@ properties:
- const: eri
- const: rxi
- const: txi
- - const: tei
+ - const: bri
- items:
- const: eri
- const: rxi
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index 0158dff63887..df26cf4110ef 100644
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -272,6 +272,8 @@ tcp_app_win - INTEGER
Reserve max(window/2^tcp_app_win, mss) of window for application
buffer. Value 0 is special, it means that nothing is reserved.
+ Possible values are [0, 31], inclusive.
+
Default: 31
tcp_autocorking - BOOLEAN
diff --git a/Documentation/powerpc/associativity.rst b/Documentation/powerpc/associativity.rst
new file mode 100644
index 000000000000..07e7dd3d6c87
--- /dev/null
+++ b/Documentation/powerpc/associativity.rst
@@ -0,0 +1,104 @@
+============================
+NUMA resource associativity
+=============================
+
+Associativity represents the groupings of the various platform resources into
+domains of substantially similar mean performance relative to resources outside
+of that domain. Resources subsets of a given domain that exhibit better
+performance relative to each other than relative to other resources subsets
+are represented as being members of a sub-grouping domain. This performance
+characteristic is presented in terms of NUMA node distance within the Linux kernel.
+From the platform view, these groups are also referred to as domains.
+
+PAPR interface currently supports different ways of communicating these resource
+grouping details to the OS. These are referred to as Form 0, Form 1 and Form2
+associativity grouping. Form 0 is the oldest format and is now considered deprecated.
+
+Hypervisor indicates the type/form of associativity used via "ibm,architecture-vec-5 property".
+Bit 0 of byte 5 in the "ibm,architecture-vec-5" property indicates usage of Form 0 or Form 1.
+A value of 1 indicates the usage of Form 1 associativity. For Form 2 associativity
+bit 2 of byte 5 in the "ibm,architecture-vec-5" property is used.
+
+Form 0
+-----
+Form 0 associativity supports only two NUMA distances (LOCAL and REMOTE).
+
+Form 1
+-----
+With Form 1 a combination of ibm,associativity-reference-points, and ibm,associativity
+device tree properties are used to determine the NUMA distance between resource groups/domains.
+
+The “ibm,associativity” property contains a list of one or more numbers (domainID)
+representing the resource’s platform grouping domains.
+
+The “ibm,associativity-reference-points” property contains a list of one or more numbers
+(domainID index) that represents the 1 based ordinal in the associativity lists.
+The list of domainID indexes represents an increasing hierarchy of resource grouping.
+
+ex:
+{ primary domainID index, secondary domainID index, tertiary domainID index.. }
+
+Linux kernel uses the domainID at the primary domainID index as the NUMA node id.
+Linux kernel computes NUMA distance between two domains by recursively comparing
+if they belong to the same higher-level domains. For mismatch at every higher
+level of the resource group, the kernel doubles the NUMA distance between the
+comparing domains.
+
+Form 2
+-------
+Form 2 associativity format adds separate device tree properties representing NUMA node distance
+thereby making the node distance computation flexible. Form 2 also allows flexible primary
+domain numbering. With numa distance computation now detached from the index value in
+"ibm,associativity-reference-points" property, Form 2 allows a large number of primary domain
+ids at the same domainID index representing resource groups of different performance/latency
+characteristics.
+
+Hypervisor indicates the usage of FORM2 associativity using bit 2 of byte 5 in the
+"ibm,architecture-vec-5" property.
+
+"ibm,numa-lookup-index-table" property contains a list of one or more numbers representing
+the domainIDs present in the system. The offset of the domainID in this property is
+used as an index while computing numa distance information via "ibm,numa-distance-table".
+
+prop-encoded-array: The number N of the domainIDs encoded as with encode-int, followed by
+N domainID encoded as with encode-int
+
+For ex:
+"ibm,numa-lookup-index-table" = {4, 0, 8, 250, 252}. The offset of domainID 8 (2) is used when
+computing the distance of domain 8 from other domains present in the system. For the rest of
+this document, this offset will be referred to as domain distance offset.
+
+"ibm,numa-distance-table" property contains a list of one or more numbers representing the NUMA
+distance between resource groups/domains present in the system.
+
+prop-encoded-array: The number N of the distance values encoded as with encode-int, followed by
+N distance values encoded as with encode-bytes. The max distance value we could encode is 255.
+The number N must be equal to the square of m where m is the number of domainIDs in the
+numa-lookup-index-table.
+
+For ex:
+ibm,numa-lookup-index-table = <3 0 8 40>;
+ibm,numa-distace-table = <9>, /bits/ 8 < 10 20 80
+ 20 10 160
+ 80 160 10>;
+ | 0 8 40
+--|------------
+ |
+0 | 10 20 80
+ |
+8 | 20 10 160
+ |
+40| 80 160 10
+
+A possible "ibm,associativity" property for resources in node 0, 8 and 40
+
+{ 3, 6, 7, 0 }
+{ 3, 6, 9, 8 }
+{ 3, 6, 7, 40}
+
+With "ibm,associativity-reference-points" { 0x3 }
+
+"ibm,lookup-index-table" helps in having a compact representation of distance matrix.
+Since domainID can be sparse, the matrix of distances can also be effectively sparse.
+With "ibm,lookup-index-table" we can achieve a compact representation of
+distance information.
diff --git a/Documentation/sound/hd-audio/models.rst b/Documentation/sound/hd-audio/models.rst
index 9b52f50a6854..120430450014 100644
--- a/Documentation/sound/hd-audio/models.rst
+++ b/Documentation/sound/hd-audio/models.rst
@@ -704,7 +704,7 @@ ref
no-jd
BIOS setup but without jack-detection
intel
- Intel DG45* mobos
+ Intel D*45* mobos
dell-m6-amic
Dell desktops/laptops with analog mics
dell-m6-dmic
diff --git a/Makefile b/Makefile
index ae202cc53158..3bde04cc7f04 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 10
-SUBLEVEL = 177
+SUBLEVEL = 178
EXTRAVERSION =
NAME = Dare mighty things
@@ -580,8 +580,10 @@ endif
ifneq ($(GCC_TOOLCHAIN),)
CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
endif
-ifneq ($(LLVM_IAS),1)
-CLANG_FLAGS += -no-integrated-as
+ifeq ($(LLVM_IAS),1)
+CLANG_FLAGS += -fintegrated-as
+else
+CLANG_FLAGS += -fno-integrated-as
endif
CLANG_FLAGS += -Werror=unknown-warning-option
KBUILD_CFLAGS += $(CLANG_FLAGS)
@@ -849,7 +851,7 @@ else
DEBUG_CFLAGS += -g
endif
-ifeq ($(LLVM_IAS),1)
+ifdef CONFIG_AS_IS_LLVM
KBUILD_AFLAGS += -g
else
KBUILD_AFLAGS += -Wa,-gdwarf-2
diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index aa6a5ef5d483..89a31f1c7b11 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -44,7 +44,7 @@
#define FW_FEATURE_OPAL ASM_CONST(0x0000000010000000)
#define FW_FEATURE_SET_MODE ASM_CONST(0x0000000040000000)
#define FW_FEATURE_BEST_ENERGY ASM_CONST(0x0000000080000000)
-#define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
+#define FW_FEATURE_FORM1_AFFINITY ASM_CONST(0x0000000100000000)
#define FW_FEATURE_PRRN ASM_CONST(0x0000000200000000)
#define FW_FEATURE_DRMEM_V2 ASM_CONST(0x0000000400000000)
#define FW_FEATURE_DRC_INFO ASM_CONST(0x0000000800000000)
@@ -53,6 +53,7 @@
#define FW_FEATURE_ULTRAVISOR ASM_CONST(0x0000004000000000)
#define FW_FEATURE_STUFF_TCE ASM_CONST(0x0000008000000000)
#define FW_FEATURE_RPT_INVALIDATE ASM_CONST(0x0000010000000000)
+#define FW_FEATURE_FORM2_AFFINITY ASM_CONST(0x0000020000000000)
#ifndef __ASSEMBLY__
@@ -69,11 +70,11 @@ enum {
FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
- FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
+ FW_FEATURE_FORM1_AFFINITY | FW_FEATURE_PRRN |
FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE |
FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR |
- FW_FEATURE_RPT_INVALIDATE,
+ FW_FEATURE_RPT_INVALIDATE | FW_FEATURE_FORM2_AFFINITY,
FW_FEATURE_PSERIES_ALWAYS = 0,
FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR,
FW_FEATURE_POWERNV_ALWAYS = 0,
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 324a13351749..5c80152e8f18 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -147,8 +147,9 @@ extern int of_read_drc_info_cell(struct property **prop,
#define OV5_MSI 0x0201 /* PCIe/MSI support */
#define OV5_CMO 0x0480 /* Cooperative Memory Overcommitment */
#define OV5_XCMO 0x0440 /* Page Coalescing */
-#define OV5_TYPE1_AFFINITY 0x0580 /* Type 1 NUMA affinity */
+#define OV5_FORM1_AFFINITY 0x0580 /* FORM1 NUMA affinity */
#define OV5_PRRN 0x0540 /* Platform Resource Reassignment */
+#define OV5_FORM2_AFFINITY 0x0520 /* Form2 NUMA affinity */
#define OV5_HP_EVT 0x0604 /* Hot Plug Event support */
#define OV5_RESIZE_HPT 0x0601 /* Hash Page Table resizing */
#define OV5_PFO_HW_RNG 0x1180 /* PFO Random Number Generator */
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 3beeb030cd78..b239ef589ae0 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -36,7 +36,7 @@ static inline int pcibus_to_node(struct pci_bus *bus)
cpu_all_mask : \
cpumask_of_node(pcibus_to_node(bus)))
-extern int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc);
+int cpu_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc);
extern int __node_distance(int, int);
#define node_distance(a, b) __node_distance(a, b)
@@ -64,6 +64,7 @@ static inline int early_cpu_to_node(int cpu)
}
int of_drconf_to_nid_single(struct drmem_lmb *lmb);
+void update_numa_distance(struct device_node *node);
#else
@@ -83,7 +84,7 @@ static inline void sysfs_remove_device_from_node(struct device *dev,
static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
-static inline int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
+static inline int cpu_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
{
return 0;
}
@@ -93,6 +94,7 @@ static inline int of_drconf_to_nid_single(struct drmem_lmb *lmb)
return first_online_node;
}
+static inline void update_numa_distance(struct device_node *node) {}
#endif /* CONFIG_NUMA */
#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 9e71c0739f08..6f7ad8076315 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1069,7 +1069,8 @@ static const struct ibm_arch_vec ibm_architecture_vec_template __initconst = {
#else
0,
#endif
- .associativity = OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN),
+ .associativity = OV5_FEAT(OV5_FORM1_AFFINITY) | OV5_FEAT(OV5_PRRN) |
+ OV5_FEAT(OV5_FORM2_AFFINITY),
.bin_opts = OV5_FEAT(OV5_RESIZE_HPT) | OV5_FEAT(OV5_HP_EVT),
.micro_checkpoint = 0,
.reserved0 = 0,
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 275c60f92a7c..ce8569e16f0c 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -51,14 +51,22 @@ EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(node_to_cpumask_map);
EXPORT_SYMBOL(node_data);
-static int min_common_depth;
+static int primary_domain_index;
static int n_mem_addr_cells, n_mem_size_cells;
-static int form1_affinity;
+
+#define FORM0_AFFINITY 0
+#define FORM1_AFFINITY 1
+#define FORM2_AFFINITY 2
+static int affinity_form;
#define MAX_DISTANCE_REF_POINTS 4
static int distance_ref_points_depth;
static const __be32 *distance_ref_points;
static int distance_lookup_table[MAX_NUMNODES][MAX_DISTANCE_REF_POINTS];
+static int numa_distance_table[MAX_NUMNODES][MAX_NUMNODES] = {
+ [0 ... MAX_NUMNODES - 1] = { [0 ... MAX_NUMNODES - 1] = -1 }
+};
+static int numa_id_index_table[MAX_NUMNODES] = { [0 ... MAX_NUMNODES - 1] = NUMA_NO_NODE };
/*
* Allocate node_to_cpumask_map based on number of available nodes
@@ -163,7 +171,55 @@ static void unmap_cpu_from_node(unsigned long cpu)
}
#endif /* CONFIG_HOTPLUG_CPU || CONFIG_PPC_SPLPAR */
-int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
+static int __associativity_to_nid(const __be32 *associativity,
+ int max_array_sz)
+{
+ int nid;
+ /*
+ * primary_domain_index is 1 based array index.
+ */
+ int index = primary_domain_index - 1;
+
+ if (!numa_enabled || index >= max_array_sz)
+ return NUMA_NO_NODE;
+
+ nid = of_read_number(&associativity[index], 1);
+
+ /* POWER4 LPAR uses 0xffff as invalid node */
+ if (nid == 0xffff || nid >= nr_node_ids)
+ nid = NUMA_NO_NODE;
+ return nid;
+}
+/*
+ * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
+ * info is found.
+ */
+static int associativity_to_nid(const __be32 *associativity)
+{
+ int array_sz = of_read_number(associativity, 1);
+
+ /* Skip the first element in the associativity array */
+ return __associativity_to_nid((associativity + 1), array_sz);
+}
+
+static int __cpu_form2_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
+{
+ int dist;
+ int node1, node2;
+
+ node1 = associativity_to_nid(cpu1_assoc);
+ node2 = associativity_to_nid(cpu2_assoc);
+
+ dist = numa_distance_table[node1][node2];
+ if (dist <= LOCAL_DISTANCE)
+ return 0;
+ else if (dist <= REMOTE_DISTANCE)
+ return 1;
+ else
+ return 2;
+}
+
+static int __cpu_form1_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
{
int dist = 0;
@@ -179,6 +235,15 @@ int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
return dist;
}
+int cpu_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
+{
+ /* We should not get called with FORM0 */
+ VM_WARN_ON(affinity_form == FORM0_AFFINITY);
+ if (affinity_form == FORM1_AFFINITY)
+ return __cpu_form1_relative_distance(cpu1_assoc, cpu2_assoc);
+ return __cpu_form2_relative_distance(cpu1_assoc, cpu2_assoc);
+}
+
/* must hold reference to node during call */
static const __be32 *of_get_associativity(struct device_node *dev)
{
@@ -190,7 +255,9 @@ int __node_distance(int a, int b)
int i;
int distance = LOCAL_DISTANCE;
- if (!form1_affinity)
+ if (affinity_form == FORM2_AFFINITY)
+ return numa_distance_table[a][b];
+ else if (affinity_form == FORM0_AFFINITY)
return ((a == b) ? LOCAL_DISTANCE : REMOTE_DISTANCE);
for (i = 0; i < distance_ref_points_depth; i++) {
@@ -205,52 +272,6 @@ int __node_distance(int a, int b)
}
EXPORT_SYMBOL(__node_distance);
-static void initialize_distance_lookup_table(int nid,
- const __be32 *associativity)
-{
- int i;
-
- if (!form1_affinity)
- return;
-
- for (i = 0; i < distance_ref_points_depth; i++) {
- const __be32 *entry;
-
- entry = &associativity[be32_to_cpu(distance_ref_points[i]) - 1];
- distance_lookup_table[nid][i] = of_read_number(entry, 1);
- }
-}
-
-/*
- * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
- * info is found.
- */
-static int associativity_to_nid(const __be32 *associativity)
-{
- int nid = NUMA_NO_NODE;
-
- if (!numa_enabled)
- goto out;
-
- if (of_read_number(associativity, 1) >= min_common_depth)
- nid = of_read_number(&associativity[min_common_depth], 1);
-
- /* POWER4 LPAR uses 0xffff as invalid node */
- if (nid == 0xffff || nid >= nr_node_ids)
- nid = NUMA_NO_NODE;
-
- if (nid > 0 &&
- of_read_number(associativity, 1) >= distance_ref_points_depth) {
- /*
- * Skip the length field and send start of associativity array
- */
- initialize_distance_lookup_table(nid, associativity + 1);
- }
-
-out:
- return nid;
-}
-
/* Returns the nid associated with the given device tree node,
* or -1 if not found.
*/
@@ -284,11 +305,160 @@ int of_node_to_nid(struct device_node *device)
}
EXPORT_SYMBOL(of_node_to_nid);
-static int __init find_min_common_depth(void)
+static void __initialize_form1_numa_distance(const __be32 *associativity,
+ int max_array_sz)
+{
+ int i, nid;
+
+ if (affinity_form != FORM1_AFFINITY)
+ return;
+
+ nid = __associativity_to_nid(associativity, max_array_sz);
+ if (nid != NUMA_NO_NODE) {
+ for (i = 0; i < distance_ref_points_depth; i++) {
+ const __be32 *entry;
+ int index = be32_to_cpu(distance_ref_points[i]) - 1;
+
+ /*
+ * broken hierarchy, return with broken distance table
+ */
+ if (WARN(index >= max_array_sz, "Broken ibm,associativity property"))
+ return;
+
+ entry = &associativity[index];
+ distance_lookup_table[nid][i] = of_read_number(entry, 1);
+ }
+ }
+}
+
+static void initialize_form1_numa_distance(const __be32 *associativity)
+{
+ int array_sz;
+
+ array_sz = of_read_number(associativity, 1);
+ /* Skip the first element in the associativity array */
+ __initialize_form1_numa_distance(associativity + 1, array_sz);
+}
+
+/*
+ * Used to update distance information w.r.t newly added node.
+ */
+void update_numa_distance(struct device_node *node)
+{
+ int nid;
+
+ if (affinity_form == FORM0_AFFINITY)
+ return;
+ else if (affinity_form == FORM1_AFFINITY) {
+ const __be32 *associativity;
+
+ associativity = of_get_associativity(node);
+ if (!associativity)
+ return;
+
+ initialize_form1_numa_distance(associativity);
+ return;
+ }
+
+ /* FORM2 affinity */
+ nid = of_node_to_nid_single(node);
+ if (nid == NUMA_NO_NODE)
+ return;
+
+ /*
+ * With FORM2 we expect NUMA distance of all possible NUMA
+ * nodes to be provided during boot.
+ */
+ WARN(numa_distance_table[nid][nid] == -1,
+ "NUMA distance details for node %d not provided\n", nid);
+}
+EXPORT_SYMBOL_GPL(update_numa_distance);
+
+/*
+ * ibm,numa-lookup-index-table= {N, domainid1, domainid2, ..... domainidN}
+ * ibm,numa-distance-table = { N, 1, 2, 4, 5, 1, 6, .... N elements}
+ */
+static void initialize_form2_numa_distance_lookup_table(void)
+{
+ int i, j;
+ struct device_node *root;
+ const __u8 *numa_dist_table;
+ const __be32 *numa_lookup_index;
+ int numa_dist_table_length;
+ int max_numa_index, distance_index;
+
+ if (firmware_has_feature(FW_FEATURE_OPAL))
+ root = of_find_node_by_path("/ibm,opal");
+ else
+ root = of_find_node_by_path("/rtas");
+ if (!root)
+ root = of_find_node_by_path("/");
+
+ numa_lookup_index = of_get_property(root, "ibm,numa-lookup-index-table", NULL);
+ max_numa_index = of_read_number(&numa_lookup_index[0], 1);
+
+ /* first element of the array is the size and is encode-int */
+ numa_dist_table = of_get_property(root, "ibm,numa-distance-table", NULL);
+ numa_dist_table_length = of_read_number((const __be32 *)&numa_dist_table[0], 1);
+ /* Skip the size which is encoded int */
+ numa_dist_table += sizeof(__be32);
+
+ pr_debug("numa_dist_table_len = %d, numa_dist_indexes_len = %d\n",
+ numa_dist_table_length, max_numa_index);
+
+ for (i = 0; i < max_numa_index; i++)
+ /* +1 skip the max_numa_index in the property */
+ numa_id_index_table[i] = of_read_number(&numa_lookup_index[i + 1], 1);
+
+
+ if (numa_dist_table_length != max_numa_index * max_numa_index) {
+ WARN(1, "Wrong NUMA distance information\n");
+ /* consider everybody else just remote. */
+ for (i = 0; i < max_numa_index; i++) {
+ for (j = 0; j < max_numa_index; j++) {
+ int nodeA = numa_id_index_table[i];
+ int nodeB = numa_id_index_table[j];
+
+ if (nodeA == nodeB)
+ numa_distance_table[nodeA][nodeB] = LOCAL_DISTANCE;
+ else
+ numa_distance_table[nodeA][nodeB] = REMOTE_DISTANCE;
+ }
+ }
+ }
+
+ distance_index = 0;
+ for (i = 0; i < max_numa_index; i++) {
+ for (j = 0; j < max_numa_index; j++) {
+ int nodeA = numa_id_index_table[i];
+ int nodeB = numa_id_index_table[j];
+
+ numa_distance_table[nodeA][nodeB] = numa_dist_table[distance_index++];
+ pr_debug("dist[%d][%d]=%d ", nodeA, nodeB, numa_distance_table[nodeA][nodeB]);
+ }
+ }
+ of_node_put(root);
+}
+
+static int __init find_primary_domain_index(void)
{
- int depth;
+ int index;
struct device_node *root;
+ /*
+ * Check for which form of affinity.
+ */
+ if (firmware_has_feature(FW_FEATURE_OPAL)) {
+ affinity_form = FORM1_AFFINITY;
+ } else if (firmware_has_feature(FW_FEATURE_FORM2_AFFINITY)) {
+ dbg("Using form 2 affinity\n");
+ affinity_form = FORM2_AFFINITY;
+ } else if (firmware_has_feature(FW_FEATURE_FORM1_AFFINITY)) {
+ dbg("Using form 1 affinity\n");
+ affinity_form = FORM1_AFFINITY;
+ } else
+ affinity_form = FORM0_AFFINITY;
+
if (firmware_has_feature(FW_FEATURE_OPAL))
root = of_find_node_by_path("/ibm,opal");
else
@@ -318,25 +488,21 @@ static int __init find_min_common_depth(void)
}
distance_ref_points_depth /= sizeof(int);
-
- if (firmware_has_feature(FW_FEATURE_OPAL) ||
- firmware_has_feature(FW_FEATURE_TYPE1_AFFINITY)) {
- dbg("Using form 1 affinity\n");
- form1_affinity = 1;
- }
-
- if (form1_affinity) {
- depth = of_read_number(distance_ref_points, 1);
- } else {
+ if (affinity_form == FORM0_AFFINITY) {
if (distance_ref_points_depth < 2) {
printk(KERN_WARNING "NUMA: "
- "short ibm,associativity-reference-points\n");
+ "short ibm,associativity-reference-points\n");
goto err;
}
- depth = of_read_number(&distance_ref_points[1], 1);
+ index = of_read_number(&distance_ref_points[1], 1);
+ } else {
+ /*
+ * Both FORM1 and FORM2 affinity find the primary domain details
+ * at the same offset.
+ */
+ index = of_read_number(distance_ref_points, 1);
}
-
/*
* Warn and cap if the hardware supports more than
* MAX_DISTANCE_REF_POINTS domains.
@@ -348,7 +514,7 @@ static int __init find_min_common_depth(void)
}
of_node_put(root);
- return depth;
+ return index;
err:
of_node_put(root);
@@ -426,6 +592,38 @@ static int of_get_assoc_arrays(struct assoc_arrays *aa)
return 0;
}
+static int get_nid_and_numa_distance(struct drmem_lmb *lmb)
+{
+ struct assoc_arrays aa = { .arrays = NULL };
+ int default_nid = NUMA_NO_NODE;
+ int nid = default_nid;
+ int rc, index;
+
+ if ((primary_domain_index < 0) || !numa_enabled)
+ return default_nid;
+
+ rc = of_get_assoc_arrays(&aa);
+ if (rc)
+ return default_nid;
+
+ if (primary_domain_index <= aa.array_sz &&
+ !(lmb->flags & DRCONF_MEM_AI_INVALID) && lmb->aa_index < aa.n_arrays) {
+ const __be32 *associativity;
+
+ index = lmb->aa_index * aa.array_sz;
+ associativity = &aa.arrays[index];
+ nid = __associativity_to_nid(associativity, aa.array_sz);
+ if (nid > 0 && affinity_form == FORM1_AFFINITY) {
+ /*
+ * lookup array associativity entries have
+ * no length of the array as the first element.
+ */
+ __initialize_form1_numa_distance(associativity, aa.array_sz);
+ }
+ }
+ return nid;
+}
+
/*
* This is like of_node_to_nid_single() for memory represented in the
* ibm,dynamic-reconfiguration-memory node.
@@ -437,35 +635,28 @@ int of_drconf_to_nid_single(struct drmem_lmb *lmb)
int nid = default_nid;
int rc, index;
- if ((min_common_depth < 0) || !numa_enabled)
+ if ((primary_domain_index < 0) || !numa_enabled)
return default_nid;
rc = of_get_assoc_arrays(&aa);
if (rc)
return default_nid;
- if (min_common_depth <= aa.array_sz &&
+ if (primary_domain_index <= aa.array_sz &&
!(lmb->flags & DRCONF_MEM_AI_INVALID) && lmb->aa_index < aa.n_arrays) {
- index = lmb->aa_index * aa.array_sz + min_common_depth - 1;
- nid = of_read_number(&aa.arrays[index], 1);
+ const __be32 *associativity;
- if (nid == 0xffff || nid >= nr_node_ids)
- nid = default_nid;
-
- if (nid > 0) {
- index = lmb->aa_index * aa.array_sz;
- initialize_distance_lookup_table(nid,
- &aa.arrays[index]);
- }
+ index = lmb->aa_index * aa.array_sz;
+ associativity = &aa.arrays[index];
+ nid = __associativity_to_nid(associativity, aa.array_sz);
}
-
return nid;
}
#ifdef CONFIG_PPC_SPLPAR
-static int vphn_get_nid(long lcpu)
+
+static int __vphn_get_associativity(long lcpu, __be32 *associativity)
{
- __be32 associativity[VPHN_ASSOC_BUFSIZE] = {0};
long rc, hwid;
/*
@@ -485,12 +676,30 @@ static int vphn_get_nid(long lcpu)
rc = hcall_vphn(hwid, VPHN_FLAG_VCPU, associativity);
if (rc == H_SUCCESS)
- return associativity_to_nid(associativity);
+ return 0;
}
+ return -1;
+}
+
+static int vphn_get_nid(long lcpu)
+{
+ __be32 associativity[VPHN_ASSOC_BUFSIZE] = {0};
+
+
+ if (!__vphn_get_associativity(lcpu, associativity))
+ return associativity_to_nid(associativity);
+
return NUMA_NO_NODE;
+
}
#else
+
+static int __vphn_get_associativity(long lcpu, __be32 *associativity)
+{
+ return -1;
+}
+
static int vphn_get_nid(long unused)
{
return NUMA_NO_NODE;
@@ -685,7 +894,7 @@ static int __init numa_setup_drmem_lmb(struct drmem_lmb *lmb,
size = read_n_cells(n_mem_size_cells, usm);
}
- nid = of_drconf_to_nid_single(lmb);
+ nid = get_nid_and_numa_distance(lmb);
fake_numa_create_new_node(((base + size) >> PAGE_SHIFT),
&nid);
node_set_online(nid);
@@ -702,24 +911,31 @@ static int __init parse_numa_properties(void)
struct device_node *memory;
int default_nid = 0;
unsigned long i;
+ const __be32 *associativity;
if (numa_enabled == 0) {
printk(KERN_WARNING "NUMA disabled by user\n");
return -1;
}
- min_common_depth = find_min_common_depth();
+ primary_domain_index = find_primary_domain_index();
- if (min_common_depth < 0) {
+ if (primary_domain_index < 0) {
/*
- * if we fail to parse min_common_depth from device tree
+ * if we fail to parse primary_domain_index from device tree
* mark the numa disabled, boot with numa disabled.
*/
numa_enabled = false;
- return min_common_depth;
+ return primary_domain_index;
}
- dbg("NUMA associativity depth for CPU/Memory: %d\n", min_common_depth);
+ dbg("NUMA associativity depth for CPU/Memory: %d\n", primary_domain_index);
+
+ /*
+ * If it is FORM2 initialize the distance table here.
+ */
+ if (affinity_form == FORM2_AFFINITY)
+ initialize_form2_numa_distance_lookup_table();
/*
* Even though we connect cpus to numa domains later in SMP
@@ -727,18 +943,30 @@ static int __init parse_numa_properties(void)
* each node to be onlined must have NODE_DATA etc backing it.
*/
for_each_present_cpu(i) {
+ __be32 vphn_assoc[VPHN_ASSOC_BUFSIZE];
struct device_node *cpu;
- int nid = vphn_get_nid(i);
+ int nid = NUMA_NO_NODE;
- /*
- * Don't fall back to default_nid yet -- we will plug
- * cpus into nodes once the memory scan has discovered
- * the topology.
- */
- if (nid == NUMA_NO_NODE) {
+ memset(vphn_assoc, 0, VPHN_ASSOC_BUFSIZE * sizeof(__be32));
+
+ if (__vphn_get_associativity(i, vphn_assoc) == 0) {
+ nid = associativity_to_nid(vphn_assoc);
+ initialize_form1_numa_distance(vphn_assoc);
+ } else {
+
+ /*
+ * Don't fall back to default_nid yet -- we will plug
+ * cpus into nodes once the memory scan has discovered
+ * the topology.
+ */
cpu = of_get_cpu_node(i, NULL);
BUG_ON(!cpu);
- nid = of_node_to_nid_single(cpu);
+
+ associativity = of_get_associativity(cpu);
+ if (associativity) {
+ nid = associativity_to_nid(associativity);
+ initialize_form1_numa_distance(associativity);
+ }
of_node_put(cpu);
}
@@ -776,8 +1004,11 @@ static int __init parse_numa_properties(void)
* have associativity properties. If none, then
* everything goes to default_nid.
*/
- nid = of_node_to_nid_single(memory);
- if (nid < 0)
+ associativity = of_get_associativity(memory);
+ if (associativity) {
+ nid = associativity_to_nid(associativity);
+ initialize_form1_numa_distance(associativity);
+ } else
nid = default_nid;
fake_numa_create_new_node(((start + size) >> PAGE_SHIFT), &nid);
@@ -926,7 +1157,7 @@ static void __init find_possible_nodes(void)
goto out;
}
- max_nodes = of_read_number(&domains[min_common_depth], 1);
+ max_nodes = of_read_number(&domains[primary_domain_index], 1);
pr_info("Partition configured for %d NUMA nodes.\n", max_nodes);
for (i = 0; i < max_nodes; i++) {
@@ -935,7 +1166,7 @@ static void __init find_possible_nodes(void)
}
prop_length /= sizeof(int);
- if (prop_length > min_common_depth + 2)
+ if (prop_length > primary_domain_index + 2)
coregroup_enabled = 1;
out:
@@ -1268,7 +1499,7 @@ int cpu_to_coregroup_id(int cpu)
goto out;
index = of_read_number(associativity, 1);
- if (index > min_common_depth + 1)
+ if (index > primary_domain_index + 1)
return of_read_number(&associativity[index - 1], 1);
out:
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index 4c7b7f5a2ebc..f162156b7b68 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -119,10 +119,11 @@ struct vec5_fw_feature {
static __initdata struct vec5_fw_feature
vec5_fw_features_table[] = {
- {FW_FEATURE_TYPE1_AFFINITY, OV5_TYPE1_AFFINITY},
+ {FW_FEATURE_FORM1_AFFINITY, OV5_FORM1_AFFINITY},
{FW_FEATURE_PRRN, OV5_PRRN},
{FW_FEATURE_DRMEM_V2, OV5_DRMEM_V2},
{FW_FEATURE_DRC_INFO, OV5_DRC_INFO},
+ {FW_FEATURE_FORM2_AFFINITY, OV5_FORM2_AFFINITY},
};
static void __init fw_vec5_feature_init(const char *vec5, unsigned long len)
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 325f3b220f36..1f8f97210d14 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -484,6 +484,8 @@ static ssize_t dlpar_cpu_add(u32 drc_index)
return saved_rc;
}
+ update_numa_distance(dn);
+
rc = dlpar_online_cpu(dn);
if (rc) {
saved_rc = rc;
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 7efe6ec5d14a..a5f968b5fa3a 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -180,6 +180,8 @@ static int update_lmb_associativity_index(struct drmem_lmb *lmb)
return -ENODEV;
}
+ update_numa_distance(lmb_node);
+
dr_node = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
if (!dr_node) {
dlpar_free_cc_nodes(lmb_node);
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 115d196560b8..28396a7e77d6 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -261,7 +261,7 @@ static int cpu_relative_dispatch_distance(int last_disp_cpu, int cur_disp_cpu)
if (!last_disp_cpu_assoc || !cur_disp_cpu_assoc)
return -EIO;
- return cpu_distance(last_disp_cpu_assoc, cur_disp_cpu_assoc);
+ return cpu_relative_distance(last_disp_cpu_assoc, cur_disp_cpu_assoc);
}
static int cpu_home_node_dispatch_distance(int disp_cpu)
@@ -281,7 +281,7 @@ static int cpu_home_node_dispatch_distance(int disp_cpu)
if (!disp_cpu_assoc || !vcpu_assoc)
return -EIO;
- return cpu_distance(disp_cpu_assoc, vcpu_assoc);
+ return cpu_relative_distance(disp_cpu_assoc, vcpu_assoc);
}
static void update_vcpu_disp_stat(int disp_cpu)
diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c
index 057acbb9116d..e3b7698b4762 100644
--- a/arch/powerpc/platforms/pseries/papr_scm.c
+++ b/arch/powerpc/platforms/pseries/papr_scm.c
@@ -1079,6 +1079,13 @@ static int papr_scm_probe(struct platform_device *pdev)
return -ENODEV;
}
+ /*
+ * open firmware platform device create won't update the NUMA
+ * distance table. For PAPR SCM devices we use numa_map_to_online_node()
+ * to find the nearest online NUMA node and that requires correct
+ * distance table information.
+ */
+ update_numa_distance(dn);
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 557c4a8c4087..c192bd7305dc 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -331,6 +331,28 @@ config RISCV_BASE_PMU
endmenu
+config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
+ def_bool y
+ # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6dc
+ depends on AS_IS_GNU && AS_VERSION >= 23800
+ help
+ Newer binutils versions default to ISA spec version 20191213 which
+ moves some instructions from the I extension to the Zicsr and Zifencei
+ extensions.
+
+config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
+ def_bool y
+ depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
+ # https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
+ depends on CC_IS_CLANG && CLANG_VERSION < 170000
+ help
+ Certain versions of clang do not support zicsr and zifencei via -march
+ but newer versions of binutils require it for the reasons noted in the
+ help text of CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI. This
+ option causes an older ISA spec compatible with these older versions
+ of clang to be passed to GAS, which has the same result as passing zicsr
+ and zifencei to -march.
+
config FPU
bool "FPU support"
default y
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 9446282b52ba..daa679440000 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -40,7 +40,7 @@ ifeq ($(CONFIG_LD_IS_LLD),y)
ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0)
KBUILD_CFLAGS += -mno-relax
KBUILD_AFLAGS += -mno-relax
-ifneq ($(LLVM_IAS),1)
+ifndef CONFIG_AS_IS_LLVM
KBUILD_CFLAGS += -Wa,-mno-relax
KBUILD_AFLAGS += -Wa,-mno-relax
endif
@@ -53,10 +53,12 @@ riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
-# Newer binutils versions default to ISA spec version 20191213 which moves some
-# instructions from the I extension to the Zicsr and Zifencei extensions.
-toolchain-need-zicsr-zifencei := $(call cc-option-yn, -march=$(riscv-march-y)_zicsr_zifencei)
-riscv-march-$(toolchain-need-zicsr-zifencei) := $(riscv-march-y)_zicsr_zifencei
+ifdef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC
+KBUILD_CFLAGS += -Wa,-misa-spec=2.2
+KBUILD_AFLAGS += -Wa,-misa-spec=2.2
+else
+riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei
+endif
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
KBUILD_AFLAGS += -march=$(riscv-march-y)
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index 50a8225c58bc..dd63407e8294 100644
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
@@ -16,6 +16,7 @@
#include <asm/vdso.h>
#include <asm/switch_to.h>
#include <asm/csr.h>
+#include <asm/cacheflush.h>
extern u32 __user_rt_sigreturn[2];
@@ -178,6 +179,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
{
struct rt_sigframe __user *frame;
long err = 0;
+ unsigned long __maybe_unused addr;
frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(frame, sizeof(*frame)))
@@ -206,7 +208,12 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
if (copy_to_user(&frame->sigreturn_code, __user_rt_sigreturn,
sizeof(frame->sigreturn_code)))
return -EFAULT;
- regs->ra = (unsigned long)&frame->sigreturn_code;
+
+ addr = (unsigned long)&frame->sigreturn_code;
+ /* Make sure the two instructions are pushed to icache. */
+ flush_icache_range(addr, addr + sizeof(frame->sigreturn_code));
+
+ regs->ra = addr;
#endif /* CONFIG_MMU */
/*
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 77909d362b78..5be68190901f 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -270,10 +270,18 @@ static int handle_prog(struct kvm_vcpu *vcpu)
/**
* handle_external_interrupt - used for external interruption interceptions
*
- * This interception only occurs if the CPUSTAT_EXT_INT bit was set, or if
- * the new PSW does not have external interrupts disabled. In the first case,
- * we've got to deliver the interrupt manually, and in the second case, we
- * drop to userspace to handle the situation there.
+ * This interception occurs if:
+ * - the CPUSTAT_EXT_INT bit was already set when the external interrupt
+ * occurred. In this case, the interrupt needs to be injected manually to
+ * preserve interrupt priority.
+ * - the external new PSW has external interrupts enabled, which will cause an
+ * interruption loop. We drop to userspace in this case.
+ *
+ * The latter case can be detected by inspecting the external mask bit in the
+ * external new psw.
+ *
+ * Under PV, only the latter case can occur, since interrupt priorities are
+ * handled in the ultravisor.
*/
static int handle_external_interrupt(struct kvm_vcpu *vcpu)
{
@@ -284,10 +292,18 @@ static int handle_external_interrupt(struct kvm_vcpu *vcpu)
vcpu->stat.exit_external_interrupt++;
- rc = read_guest_lc(vcpu, __LC_EXT_NEW_PSW, &newpsw, sizeof(psw_t));
- if (rc)
- return rc;
- /* We can not handle clock comparator or timer interrupt with bad PSW */
+ if (kvm_s390_pv_cpu_is_protected(vcpu)) {
+ newpsw = vcpu->arch.sie_block->gpsw;
+ } else {
+ rc = read_guest_lc(vcpu, __LC_EXT_NEW_PSW, &newpsw, sizeof(psw_t));
+ if (rc)
+ return rc;
+ }
+
+ /*
+ * Clock comparator or timer interrupt with external interrupt enabled
+ * will cause interrupt loop. Drop to userspace.
+ */
if ((eic == EXT_IRQ_CLK_COMP || eic == EXT_IRQ_CPU_TIMER) &&
(newpsw.mask & PSW_MASK_EXT))
return -EOPNOTSUPP;
diff --git a/arch/x86/kernel/sysfb_efi.c b/arch/x86/kernel/sysfb_efi.c
index 9ea65611fba0..fff04d285976 100644
--- a/arch/x86/kernel/sysfb_efi.c
+++ b/arch/x86/kernel/sysfb_efi.c
@@ -272,6 +272,14 @@ static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
"IdeaPad Duet 3 10IGL5"),
},
},
+ {
+ /* Lenovo Yoga Book X91F / X91L */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ /* Non exact match to match F + L versions */
+ DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
+ },
+ },
{},
};
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index a3038d8deb6a..b758eeea6090 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -32,8 +32,8 @@ static int __init iommu_init_noop(void) { return 0; }
static void iommu_shutdown_noop(void) { }
bool __init bool_x86_init_noop(void) { return false; }
void x86_op_int_noop(int cpu) { }
-static __init int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; }
-static __init void get_rtc_noop(struct timespec64 *now) { }
+static int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; }
+static void get_rtc_noop(struct timespec64 *now) { }
static __initconst const struct of_device_id of_cmos_match[] = {
{ .compatible = "motorola,mc146818" },
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 9b0e771302ce..3f3411b882f5 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -7,6 +7,7 @@
#include <linux/dmi.h>
#include <linux/pci.h>
#include <linux/vgaarb.h>
+#include <asm/amd_nb.h>
#include <asm/hpet.h>
#include <asm/pci_x86.h>
@@ -824,3 +825,23 @@ static void rs690_fix_64bit_dma(struct pci_dev *pdev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7910, rs690_fix_64bit_dma);
#endif
+
+#ifdef CONFIG_AMD_NB
+
+#define AMD_15B8_RCC_DEV2_EPF0_STRAP2 0x10136008
+#define AMD_15B8_RCC_DEV2_EPF0_STRAP2_NO_SOFT_RESET_DEV2_F0_MASK 0x00000080L
+
+static void quirk_clear_strap_no_soft_reset_dev2_f0(struct pci_dev *dev)
+{
+ u32 data;
+
+ if (!amd_smn_read(0, AMD_15B8_RCC_DEV2_EPF0_STRAP2, &data)) {
+ data &= ~AMD_15B8_RCC_DEV2_EPF0_STRAP2_NO_SOFT_RESET_DEV2_F0_MASK;
+ if (amd_smn_write(0, AMD_15B8_RCC_DEV2_EPF0_STRAP2, data))
+ pci_err(dev, "Failed to write data 0x%x\n", data);
+ } else {
+ pci_err(dev, "Failed to read data\n");
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15b8, quirk_clear_strap_no_soft_reset_dev2_f0);
+#endif
diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c
index ce49820caa97..01e54450c846 100644
--- a/crypto/asymmetric_keys/pkcs7_verify.c
+++ b/crypto/asymmetric_keys/pkcs7_verify.c
@@ -79,16 +79,16 @@ static int pkcs7_digest(struct pkcs7_message *pkcs7,
}
if (sinfo->msgdigest_len != sig->digest_size) {
- pr_debug("Sig %u: Invalid digest size (%u)\n",
- sinfo->index, sinfo->msgdigest_len);
+ pr_warn("Sig %u: Invalid digest size (%u)\n",
+ sinfo->index, sinfo->msgdigest_len);
ret = -EBADMSG;
goto error;
}
if (memcmp(sig->digest, sinfo->msgdigest,
sinfo->msgdigest_len) != 0) {
- pr_debug("Sig %u: Message digest doesn't match\n",
- sinfo->index);
+ pr_warn("Sig %u: Message digest doesn't match\n",
+ sinfo->index);
ret = -EKEYREJECTED;
goto error;
}
@@ -488,7 +488,7 @@ int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,
const void *data, size_t datalen)
{
if (pkcs7->data) {
- pr_debug("Data already supplied\n");
+ pr_warn("Data already supplied\n");
return -EINVAL;
}
pkcs7->data = data;
diff --git a/crypto/asymmetric_keys/verify_pefile.c b/crypto/asymmetric_keys/verify_pefile.c
index 7553ab18db89..22beaf2213a2 100644
--- a/crypto/asymmetric_keys/verify_pefile.c
+++ b/crypto/asymmetric_keys/verify_pefile.c
@@ -74,7 +74,7 @@ static int pefile_parse_binary(const void *pebuf, unsigned int pelen,
break;
default:
- pr_debug("Unknown PEOPT magic = %04hx\n", pe32->magic);
+ pr_warn("Unknown PEOPT magic = %04hx\n", pe32->magic);
return -ELIBBAD;
}
@@ -95,7 +95,7 @@ static int pefile_parse_binary(const void *pebuf, unsigned int pelen,
ctx->certs_size = ddir->certs.size;
if (!ddir->certs.virtual_address || !ddir->certs.size) {
- pr_debug("Unsigned PE binary\n");
+ pr_warn("Unsigned PE binary\n");
return -ENODATA;
}
@@ -127,7 +127,7 @@ static int pefile_strip_sig_wrapper(const void *pebuf,
unsigned len;
if (ctx->sig_len < sizeof(wrapper)) {
- pr_debug("Signature wrapper too short\n");
+ pr_warn("Signature wrapper too short\n");
return -ELIBBAD;
}
@@ -135,19 +135,23 @@ static int pefile_strip_sig_wrapper(const void *pebuf,
pr_debug("sig wrapper = { %x, %x, %x }\n",
wrapper.length, wrapper.revision, wrapper.cert_type);
- /* Both pesign and sbsign round up the length of certificate table
- * (in optional header data directories) to 8 byte alignment.
+ /* sbsign rounds up the length of certificate table (in optional
+ * header data directories) to 8 byte alignment. However, the PE
+ * specification states that while entries are 8-byte aligned, this is
+ * not included in their length, and as a result, pesign has not
+ * rounded up since 0.110.
*/
- if (round_up(wrapper.length, 8) != ctx->sig_len) {
- pr_debug("Signature wrapper len wrong\n");
+ if (wrapper.length > ctx->sig_len) {
+ pr_warn("Signature wrapper bigger than sig len (%x > %x)\n",
+ ctx->sig_len, wrapper.length);
return -ELIBBAD;
}
if (wrapper.revision != WIN_CERT_REVISION_2_0) {
- pr_debug("Signature is not revision 2.0\n");
+ pr_warn("Signature is not revision 2.0\n");
return -ENOTSUPP;
}
if (wrapper.cert_type != WIN_CERT_TYPE_PKCS_SIGNED_DATA) {
- pr_debug("Signature certificate type is not PKCS\n");
+ pr_warn("Signature certificate type is not PKCS\n");
return -ENOTSUPP;
}
@@ -160,7 +164,7 @@ static int pefile_strip_sig_wrapper(const void *pebuf,
ctx->sig_offset += sizeof(wrapper);
ctx->sig_len -= sizeof(wrapper);
if (ctx->sig_len < 4) {
- pr_debug("Signature data missing\n");
+ pr_warn("Signature data missing\n");
return -EKEYREJECTED;
}
@@ -194,7 +198,7 @@ static int pefile_strip_sig_wrapper(const void *pebuf,
return 0;
}
not_pkcs7:
- pr_debug("Signature data not PKCS#7\n");
+ pr_warn("Signature data not PKCS#7\n");
return -ELIBBAD;
}
@@ -337,8 +341,8 @@ static int pefile_digest_pe(const void *pebuf, unsigned int pelen,
digest_size = crypto_shash_digestsize(tfm);
if (digest_size != ctx->digest_len) {
- pr_debug("Digest size mismatch (%zx != %x)\n",
- digest_size, ctx->digest_len);
+ pr_warn("Digest size mismatch (%zx != %x)\n",
+ digest_size, ctx->digest_len);
ret = -EBADMSG;
goto error_no_desc;
}
@@ -369,7 +373,7 @@ static int pefile_digest_pe(const void *pebuf, unsigned int pelen,
* PKCS#7 certificate.
*/
if (memcmp(digest, ctx->digest, ctx->digest_len) != 0) {
- pr_debug("Digest mismatch\n");
+ pr_warn("Digest mismatch\n");
ret = -EKEYREJECTED;
} else {
pr_debug("The digests match!\n");
diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
index ce81e4087a8f..2bfbab8db94b 100644
--- a/drivers/clk/sprd/common.c
+++ b/drivers/clk/sprd/common.c
@@ -17,7 +17,6 @@ static const struct regmap_config sprdclk_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .max_register = 0xffff,
.fast_io = true,
};
@@ -43,6 +42,8 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node, *np;
struct regmap *regmap;
+ struct resource *res;
+ struct regmap_config reg_config = sprdclk_regmap_config;
if (of_find_property(node, "sprd,syscon", NULL)) {
regmap = syscon_regmap_lookup_by_phandle(node, "sprd,syscon");
@@ -59,12 +60,14 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
return PTR_ERR(regmap);
}
} else {
- base = devm_platform_ioremap_resource(pdev, 0);
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(base))
return PTR_ERR(base);
+ reg_config.max_register = resource_size(res) - reg_config.reg_stride;
+
regmap = devm_regmap_init_mmio(&pdev->dev, base,
- &sprdclk_regmap_config);
+ ®_config);
if (IS_ERR(regmap)) {
pr_err("failed to init regmap\n");
return PTR_ERR(regmap);
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index d1300fc003ed..39f3e1366409 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -99,7 +99,7 @@ config GPIO_GENERIC
tristate
config GPIO_REGMAP
- depends on REGMAP
+ select REGMAP
tristate
# put drivers in the right section, in alphabetical order
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 6f2138503726..80597e90de9c 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -326,7 +326,7 @@ static struct irq_chip gpio_irqchip = {
.irq_enable = gpio_irq_enable,
.irq_disable = gpio_irq_disable,
.irq_set_type = gpio_irq_type,
- .flags = IRQCHIP_SET_TYPE_MASKED,
+ .flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_SKIP_SET_WAKE,
};
static void gpio_irq_handler(struct irq_desc *desc)
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index 980d3f1f8f16..2d1e1e48f0ee 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -102,7 +102,6 @@ static int armada_drm_bind(struct device *dev)
if (ret) {
dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
__func__, ret);
- kfree(priv);
return ret;
}
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 0c6dea9ccb72..660e05fa4a70 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -256,6 +256,7 @@ static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode
{ 0x8126, 0x55 },
{ 0x8127, 0x66 },
{ 0x8128, 0x88 },
+ { 0x812a, 0x20 },
};
regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c
index 8768073794fb..6106fa7c4302 100644
--- a/drivers/gpu/drm/drm_panel_orientation_quirks.c
+++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c
@@ -284,10 +284,17 @@ static const struct dmi_system_id orientation_data[] = {
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Duet 3 10IGL5"),
},
.driver_data = (void *)&lcd1200x1920_rightside_up,
- }, { /* Lenovo Yoga Book X90F / X91F / X91L */
+ }, { /* Lenovo Yoga Book X90F / X90L */
.matches = {
- /* Non exact match to match all versions */
- DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"),
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
+ },
+ .driver_data = (void *)&lcd1200x1920_rightside_up,
+ }, { /* Lenovo Yoga Book X91F / X91L */
+ .matches = {
+ /* Non exact match to match F + L versions */
+ DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
},
.driver_data = (void *)&lcd1200x1920_rightside_up,
}, { /* OneGX1 Pro */
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 804ea035fa46..0ac120225b4d 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -396,6 +396,35 @@ nv50_outp_atomic_check_view(struct drm_encoder *encoder,
return 0;
}
+static void
+nv50_outp_atomic_fix_depth(struct drm_encoder *encoder, struct drm_crtc_state *crtc_state)
+{
+ struct nv50_head_atom *asyh = nv50_head_atom(crtc_state);
+ struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ struct drm_display_mode *mode = &asyh->state.adjusted_mode;
+ unsigned int max_rate, mode_rate;
+
+ switch (nv_encoder->dcb->type) {
+ case DCB_OUTPUT_DP:
+ max_rate = nv_encoder->dp.link_nr * nv_encoder->dp.link_bw;
+
+ /* we don't support more than 10 anyway */
+ asyh->or.bpc = min_t(u8, asyh->or.bpc, 10);
+
+ /* reduce the bpc until it works out */
+ while (asyh->or.bpc > 6) {
+ mode_rate = DIV_ROUND_UP(mode->clock * asyh->or.bpc * 3, 8);
+ if (mode_rate <= max_rate)
+ break;
+
+ asyh->or.bpc -= 2;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
static int
nv50_outp_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
@@ -414,6 +443,9 @@ nv50_outp_atomic_check(struct drm_encoder *encoder,
if (crtc_state->mode_changed || crtc_state->connectors_changed)
asyh->or.bpc = connector->display_info.bpc;
+ /* We might have to reduce the bpc */
+ nv50_outp_atomic_fix_depth(encoder, crtc_state);
+
return 0;
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index 040ed88d362d..447b7594b35a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -220,8 +220,6 @@ void nouveau_dp_irq(struct nouveau_drm *drm,
}
/* TODO:
- * - Use the minimum possible BPC here, once we add support for the max bpc
- * property.
* - Validate against the DP caps advertised by the GPU (we don't check these
* yet)
*/
@@ -233,7 +231,11 @@ nv50_dp_mode_valid(struct drm_connector *connector,
{
const unsigned int min_clock = 25000;
unsigned int max_rate, mode_rate, ds_max_dotclock, clock = mode->clock;
- const u8 bpp = connector->display_info.bpc * 3;
+ /* Check with the minmum bpc always, so we can advertise better modes.
+ * In particlar not doing this causes modes to be dropped on HDR
+ * displays as we might check with a bpc of 16 even.
+ */
+ const u8 bpp = 6 * 3;
if (mode->flags & DRM_MODE_FLAG_INTERLACE && !outp->caps.dp_interlace)
return MODE_NO_INTERLACE;
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index 5ff856ef7d88..c81f3ac22cdd 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -458,6 +458,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
if (IS_ERR(pages[i])) {
mutex_unlock(&bo->base.pages_lock);
ret = PTR_ERR(pages[i]);
+ pages[i] = NULL;
goto err_pages;
}
}
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index bfd7f00a59ec..683fdfa3e723 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -305,6 +305,10 @@ void vmbus_disconnect(void)
*/
struct vmbus_channel *relid2channel(u32 relid)
{
+ if (vmbus_connection.channels == NULL) {
+ pr_warn_once("relid2channel: relid=%d: No channels mapped!\n", relid);
+ return NULL;
+ }
if (WARN_ON(relid >= MAX_CHANNEL_RELIDS))
return NULL;
return READ_ONCE(vmbus_connection.channels[relid]);
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 99df453575f5..059c09a925cc 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -179,7 +179,7 @@ static int etm4_enable_hw(struct etmv4_drvdata *drvdata)
writel_relaxed(config->ss_pe_cmp[i],
drvdata->base + TRCSSPCICRn(i));
}
- for (i = 0; i < drvdata->nr_addr_cmp; i++) {
+ for (i = 0; i < drvdata->nr_addr_cmp * 2; i++) {
writeq_relaxed(config->addr_val[i],
drvdata->base + TRCACVRn(i));
writeq_relaxed(config->addr_acc[i],
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index 2018dbcf241e..d45ec26d51cb 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -462,6 +462,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter,
if (num == 1 && msgs[0].len == 0)
goto stop;
+ lpi2c_imx->rx_buf = NULL;
+ lpi2c_imx->tx_buf = NULL;
lpi2c_imx->delivered = 0;
lpi2c_imx->msglen = msgs[i].len;
init_completion(&lpi2c_imx->complete);
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index f5fc75b65a19..71e26aa6bd8f 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -343,18 +343,18 @@ static int ocores_poll_wait(struct ocores_i2c *i2c)
* ocores_isr(), we just add our polling code around it.
*
* It can run in atomic context
+ *
+ * Return: 0 on success, -ETIMEDOUT on timeout
*/
-static void ocores_process_polling(struct ocores_i2c *i2c)
+static int ocores_process_polling(struct ocores_i2c *i2c)
{
- while (1) {
- irqreturn_t ret;
- int err;
+ irqreturn_t ret;
+ int err = 0;
+ while (1) {
err = ocores_poll_wait(i2c);
- if (err) {
- i2c->state = STATE_ERROR;
+ if (err)
break; /* timeout */
- }
ret = ocores_isr(-1, i2c);
if (ret == IRQ_NONE)
@@ -365,13 +365,15 @@ static void ocores_process_polling(struct ocores_i2c *i2c)
break;
}
}
+
+ return err;
}
static int ocores_xfer_core(struct ocores_i2c *i2c,
struct i2c_msg *msgs, int num,
bool polling)
{
- int ret;
+ int ret = 0;
u8 ctrl;
ctrl = oc_getreg(i2c, OCI2C_CONTROL);
@@ -389,15 +391,16 @@ static int ocores_xfer_core(struct ocores_i2c *i2c,
oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_START);
if (polling) {
- ocores_process_polling(i2c);
+ ret = ocores_process_polling(i2c);
} else {
- ret = wait_event_timeout(i2c->wait,
- (i2c->state == STATE_ERROR) ||
- (i2c->state == STATE_DONE), HZ);
- if (ret == 0) {
- ocores_process_timeout(i2c);
- return -ETIMEDOUT;
- }
+ if (wait_event_timeout(i2c->wait,
+ (i2c->state == STATE_ERROR) ||
+ (i2c->state == STATE_DONE), HZ) == 0)
+ ret = -ETIMEDOUT;
+ }
+ if (ret) {
+ ocores_process_timeout(i2c);
+ return ret;
}
return (i2c->state == STATE_DONE) ? num : -EIO;
diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
index d57ad966e17c..f3502f12653b 100644
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -253,7 +253,7 @@ static const struct ad_sigma_delta_info ad7791_sigma_delta_info = {
.has_registers = true,
.addr_shift = 4,
.read_mask = BIT(3),
- .irq_flags = IRQF_TRIGGER_LOW,
+ .irq_flags = IRQF_TRIGGER_FALLING,
};
static int ad7791_read_raw(struct iio_dev *indio_dev,
diff --git a/drivers/iio/adc/ti-ads7950.c b/drivers/iio/adc/ti-ads7950.c
index a2b83f0bd526..d4583b76f1fe 100644
--- a/drivers/iio/adc/ti-ads7950.c
+++ b/drivers/iio/adc/ti-ads7950.c
@@ -634,6 +634,7 @@ static int ti_ads7950_probe(struct spi_device *spi)
st->chip.label = dev_name(&st->spi->dev);
st->chip.parent = &st->spi->dev;
st->chip.owner = THIS_MODULE;
+ st->chip.can_sleep = true;
st->chip.base = -1;
st->chip.ngpio = TI_ADS7950_NUM_GPIOS;
st->chip.get_direction = ti_ads7950_get_direction;
diff --git a/drivers/iio/dac/cio-dac.c b/drivers/iio/dac/cio-dac.c
index 95813569f394..77a6916b3d6c 100644
--- a/drivers/iio/dac/cio-dac.c
+++ b/drivers/iio/dac/cio-dac.c
@@ -66,8 +66,8 @@ static int cio_dac_write_raw(struct iio_dev *indio_dev,
if (mask != IIO_CHAN_INFO_RAW)
return -EINVAL;
- /* DAC can only accept up to a 16-bit value */
- if ((unsigned int)val > 65535)
+ /* DAC can only accept up to a 12-bit value */
+ if ((unsigned int)val > 4095)
return -EINVAL;
priv->chan_out_states[chan->channel] = val;
diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c
index 97649944f1df..c14a630dd683 100644
--- a/drivers/iio/light/cm32181.c
+++ b/drivers/iio/light/cm32181.c
@@ -429,6 +429,14 @@ static const struct iio_info cm32181_info = {
.attrs = &cm32181_attribute_group,
};
+static void cm32181_unregister_dummy_client(void *data)
+{
+ struct i2c_client *client = data;
+
+ /* Unregister the dummy client */
+ i2c_unregister_device(client);
+}
+
static int cm32181_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
@@ -458,6 +466,10 @@ static int cm32181_probe(struct i2c_client *client)
client = i2c_acpi_new_device(dev, 1, &board_info);
if (IS_ERR(client))
return PTR_ERR(client);
+
+ ret = devm_add_action_or_reset(dev, cm32181_unregister_dummy_client, client);
+ if (ret)
+ return ret;
}
cm32181 = iio_priv(indio_dev);
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 9ed5de38e372..fdcad8d6a5a0 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -505,22 +505,11 @@ static inline unsigned short cma_family(struct rdma_id_private *id_priv)
return id_priv->id.route.addr.src_addr.ss_family;
}
-static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey)
+static int cma_set_default_qkey(struct rdma_id_private *id_priv)
{
struct ib_sa_mcmember_rec rec;
int ret = 0;
- if (id_priv->qkey) {
- if (qkey && id_priv->qkey != qkey)
- return -EINVAL;
- return 0;
- }
-
- if (qkey) {
- id_priv->qkey = qkey;
- return 0;
- }
-
switch (id_priv->id.ps) {
case RDMA_PS_UDP:
case RDMA_PS_IB:
@@ -540,6 +529,16 @@ static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey)
return ret;
}
+static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey)
+{
+ if (!qkey ||
+ (id_priv->qkey && (id_priv->qkey != qkey)))
+ return -EINVAL;
+
+ id_priv->qkey = qkey;
+ return 0;
+}
+
static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr)
{
dev_addr->dev_type = ARPHRD_INFINIBAND;
@@ -1107,7 +1106,7 @@ static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv,
*qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT;
if (id_priv->id.qp_type == IB_QPT_UD) {
- ret = cma_set_qkey(id_priv, 0);
+ ret = cma_set_default_qkey(id_priv);
if (ret)
return ret;
@@ -4312,7 +4311,10 @@ static int cma_send_sidr_rep(struct rdma_id_private *id_priv,
memset(&rep, 0, sizeof rep);
rep.status = status;
if (status == IB_SIDR_SUCCESS) {
- ret = cma_set_qkey(id_priv, qkey);
+ if (qkey)
+ ret = cma_set_qkey(id_priv, qkey);
+ else
+ ret = cma_set_default_qkey(id_priv);
if (ret)
return ret;
rep.qp_num = id_priv->qp_num;
@@ -4516,9 +4518,7 @@ static void cma_make_mc_event(int status, struct rdma_id_private *id_priv,
enum ib_gid_type gid_type;
struct net_device *ndev;
- if (!status)
- status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey));
- else
+ if (status)
pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to join multicast. status %d\n",
status);
@@ -4546,7 +4546,7 @@ static void cma_make_mc_event(int status, struct rdma_id_private *id_priv,
}
event->param.ud.qp_num = 0xFFFFFF;
- event->param.ud.qkey = be32_to_cpu(multicast->rec.qkey);
+ event->param.ud.qkey = id_priv->qkey;
out:
if (ndev)
@@ -4565,8 +4565,11 @@ static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast)
READ_ONCE(id_priv->state) == RDMA_CM_DESTROYING)
goto out;
- cma_make_mc_event(status, id_priv, multicast, &event, mc);
- ret = cma_cm_event_handler(id_priv, &event);
+ ret = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey));
+ if (!ret) {
+ cma_make_mc_event(status, id_priv, multicast, &event, mc);
+ ret = cma_cm_event_handler(id_priv, &event);
+ }
rdma_destroy_ah_attr(&event.param.ud.ah_attr);
WARN_ON(ret);
@@ -4619,9 +4622,11 @@ static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
if (ret)
return ret;
- ret = cma_set_qkey(id_priv, 0);
- if (ret)
- return ret;
+ if (!id_priv->qkey) {
+ ret = cma_set_default_qkey(id_priv);
+ if (ret)
+ return ret;
+ }
cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid);
rec.qkey = cpu_to_be32(id_priv->qkey);
@@ -4709,9 +4714,6 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv,
cma_iboe_set_mgid(addr, &ib.rec.mgid, gid_type);
ib.rec.pkey = cpu_to_be16(0xffff);
- if (id_priv->id.ps == RDMA_PS_UDP)
- ib.rec.qkey = cpu_to_be32(RDMA_UDP_QKEY);
-
if (dev_addr->bound_dev_if)
ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if);
if (!ndev)
@@ -4737,6 +4739,9 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv,
if (err || !ib.rec.mtu)
return err ?: -EINVAL;
+ if (!id_priv->qkey)
+ cma_set_default_qkey(id_priv);
+
rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr,
&ib.rec.port_gid);
INIT_WORK(&mc->iboe_join.work, cma_iboe_join_work_handler);
@@ -4762,6 +4767,9 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
READ_ONCE(id_priv->state) != RDMA_CM_ADDR_RESOLVED))
return -EINVAL;
+ if (id_priv->id.qp_type != IB_QPT_UD)
+ return -EINVAL;
+
mc = kzalloc(sizeof(*mc), GFP_KERNEL);
if (!mc)
return -ENOMEM;
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 5123be0ab02f..4fcabe5a84be 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -535,6 +535,8 @@ static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
ret = device->ops.create_ah(ah, &init_attr, udata);
if (ret) {
+ if (ah->sgid_attr)
+ rdma_put_gid_attr(ah->sgid_attr);
kfree(ah);
return ERR_PTR(ret);
}
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index eb69bec77e5d..5ef37902e96b 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -425,10 +425,26 @@ static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed,
*active_width = IB_WIDTH_2X;
*active_speed = IB_SPEED_HDR;
break;
+ case MLX5E_PROT_MASK(MLX5E_100GAUI_1_100GBASE_CR_KR):
+ *active_width = IB_WIDTH_1X;
+ *active_speed = IB_SPEED_NDR;
+ break;
case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_HDR;
break;
+ case MLX5E_PROT_MASK(MLX5E_200GAUI_2_200GBASE_CR2_KR2):
+ *active_width = IB_WIDTH_2X;
+ *active_speed = IB_SPEED_NDR;
+ break;
+ case MLX5E_PROT_MASK(MLX5E_400GAUI_8):
+ *active_width = IB_WIDTH_8X;
+ *active_speed = IB_SPEED_HDR;
+ break;
+ case MLX5E_PROT_MASK(MLX5E_400GAUI_4_400GBASE_CR4_KR4):
+ *active_width = IB_WIDTH_4X;
+ *active_speed = IB_SPEED_NDR;
+ break;
default:
return -EINVAL;
}
diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 93121c90d76a..2eef245c31a1 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -624,10 +624,8 @@ static struct cal_ctx *cal_ctx_create(struct cal_dev *cal, int inst)
ctx->cport = inst;
ret = cal_ctx_v4l2_init(ctx);
- if (ret) {
- kfree(ctx);
+ if (ret)
return NULL;
- }
return ctx;
}
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index 32e52d83b961..9e5bbb545702 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -153,7 +153,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
mtdblk->cache_state = STATE_EMPTY;
ret = mtd_read(mtd, sect_start, sect_size,
&retlen, mtdblk->cache_data);
- if (ret)
+ if (ret && !mtd_is_bitflip(ret))
return ret;
if (retlen != sect_size)
return -EIO;
@@ -188,8 +188,12 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
pr_debug("mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
- if (!sect_size)
- return mtd_read(mtd, pos, len, &retlen, buf);
+ if (!sect_size) {
+ ret = mtd_read(mtd, pos, len, &retlen, buf);
+ if (ret && !mtd_is_bitflip(ret))
+ return ret;
+ return 0;
+ }
while (len > 0) {
unsigned long sect_start = (pos/sect_size)*sect_size;
@@ -209,7 +213,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
memcpy (buf, mtdblk->cache_data + offset, size);
} else {
ret = mtd_read(mtd, pos, size, &retlen, buf);
- if (ret)
+ if (ret && !mtd_is_bitflip(ret))
return ret;
if (retlen != size)
return -EIO;
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index dc631c514318..228612d82f31 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -276,7 +276,7 @@ static void meson_nfc_cmd_access(struct nand_chip *nand, int raw, bool dir,
if (raw) {
len = mtd->writesize + mtd->oobsize;
- cmd = (len & GENMASK(5, 0)) | scrambler | DMA_DIR(dir);
+ cmd = (len & GENMASK(13, 0)) | scrambler | DMA_DIR(dir);
writel(cmd, nfc->reg_base + NFC_REG_CMD);
return;
}
@@ -540,7 +540,7 @@ static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len)
if (ret)
goto out;
- cmd = NFC_CMD_N2M | (len & GENMASK(5, 0));
+ cmd = NFC_CMD_N2M | (len & GENMASK(13, 0));
writel(cmd, nfc->reg_base + NFC_REG_CMD);
meson_nfc_drain_cmd(nfc);
@@ -564,7 +564,7 @@ static int meson_nfc_write_buf(struct nand_chip *nand, u8 *buf, int len)
if (ret)
return ret;
- cmd = NFC_CMD_M2N | (len & GENMASK(5, 0));
+ cmd = NFC_CMD_M2N | (len & GENMASK(13, 0));
writel(cmd, nfc->reg_base + NFC_REG_CMD);
meson_nfc_drain_cmd(nfc);
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 550bda4d1415..c0c47f31c100 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1525,6 +1525,9 @@ static int stm32_fmc2_nfc_setup_interface(struct nand_chip *chip, int chipnr,
if (IS_ERR(sdrt))
return PTR_ERR(sdrt);
+ if (conf->timings.mode > 3)
+ return -EOPNOTSUPP;
+
if (chipnr == NAND_DATA_IFACE_CHECK_ONLY)
return 0;
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index e45fdc1bf66a..929ce489b062 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -665,12 +665,6 @@ static int io_init(struct ubi_device *ubi, int max_beb_per1024)
ubi->ec_hdr_alsize = ALIGN(UBI_EC_HDR_SIZE, ubi->hdrs_min_io_size);
ubi->vid_hdr_alsize = ALIGN(UBI_VID_HDR_SIZE, ubi->hdrs_min_io_size);
- if (ubi->vid_hdr_offset && ((ubi->vid_hdr_offset + UBI_VID_HDR_SIZE) >
- ubi->vid_hdr_alsize)) {
- ubi_err(ubi, "VID header offset %d too large.", ubi->vid_hdr_offset);
- return -EINVAL;
- }
-
dbg_gen("min_io_size %d", ubi->min_io_size);
dbg_gen("max_write_size %d", ubi->max_write_size);
dbg_gen("hdrs_min_io_size %d", ubi->hdrs_min_io_size);
@@ -688,6 +682,21 @@ static int io_init(struct ubi_device *ubi, int max_beb_per1024)
ubi->vid_hdr_aloffset;
}
+ /*
+ * Memory allocation for VID header is ubi->vid_hdr_alsize
+ * which is described in comments in io.c.
+ * Make sure VID header shift + UBI_VID_HDR_SIZE not exceeds
+ * ubi->vid_hdr_alsize, so that all vid header operations
+ * won't access memory out of bounds.
+ */
+ if ((ubi->vid_hdr_shift + UBI_VID_HDR_SIZE) > ubi->vid_hdr_alsize) {
+ ubi_err(ubi, "Invalid VID header offset %d, VID header shift(%d)"
+ " + VID header size(%zu) > VID header aligned size(%d).",
+ ubi->vid_hdr_offset, ubi->vid_hdr_shift,
+ UBI_VID_HDR_SIZE, ubi->vid_hdr_alsize);
+ return -EINVAL;
+ }
+
/* Similar for the data offset */
ubi->leb_start = ubi->vid_hdr_offset + UBI_VID_HDR_SIZE;
ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size);
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 6da09263e0b9..4427018ad4d9 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -575,6 +575,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
* @vol_id: the volume ID that last used this PEB
* @lnum: the last used logical eraseblock number for the PEB
* @torture: if the physical eraseblock has to be tortured
+ * @nested: denotes whether the work_sem is already held
*
* This function returns zero in case of success and a %-ENOMEM in case of
* failure.
@@ -1066,8 +1067,6 @@ static int ensure_wear_leveling(struct ubi_device *ubi, int nested)
* __erase_worker - physical eraseblock erase worker function.
* @ubi: UBI device description object
* @wl_wrk: the work object
- * @shutdown: non-zero if the worker has to free memory and exit
- * because the WL sub-system is shutting down
*
* This function erases a physical eraseblock and perform torture testing if
* needed. It also takes care about marking the physical eraseblock bad if
@@ -1122,7 +1121,7 @@ static int __erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk)
int err1;
/* Re-schedule the LEB for erasure */
- err1 = schedule_erase(ubi, e, vol_id, lnum, 0, false);
+ err1 = schedule_erase(ubi, e, vol_id, lnum, 0, true);
if (err1) {
spin_lock(&ubi->wl_lock);
wl_entry_destroy(ubi, e);
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index e0d62e251387..70d57ef95fb1 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -884,6 +884,10 @@ static dma_addr_t macb_get_addr(struct macb *bp, struct macb_dma_desc *desc)
}
#endif
addr |= MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr));
+#ifdef CONFIG_MACB_USE_HWSTAMP
+ if (bp->hw_dma_cap & HW_DMA_CAP_PTP)
+ addr &= ~GEM_BIT(DMA_RXVALID);
+#endif
return addr;
}
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
index 87f76bac2e46..eb827b86ecae 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
@@ -628,7 +628,13 @@ int qlcnic_fw_create_ctx(struct qlcnic_adapter *dev)
int i, err, ring;
if (dev->flags & QLCNIC_NEED_FLR) {
- pci_reset_function(dev->pdev);
+ err = pci_reset_function(dev->pdev);
+ if (err) {
+ dev_err(&dev->pdev->dev,
+ "Adapter reset failed (%d). Please reboot\n",
+ err);
+ return err;
+ }
dev->flags &= ~QLCNIC_NEED_FLR;
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 04c59102a286..de66406c5057 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4940,7 +4940,7 @@ static void stmmac_napi_del(struct net_device *dev)
int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
{
struct stmmac_priv *priv = netdev_priv(dev);
- int ret = 0;
+ int ret = 0, i;
if (netif_running(dev))
stmmac_release(dev);
@@ -4949,6 +4949,10 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
priv->plat->rx_queues_to_use = rx_cnt;
priv->plat->tx_queues_to_use = tx_cnt;
+ if (!netif_is_rxfh_configured(dev))
+ for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+ priv->rss.table[i] = ethtool_rxfh_indir_default(i,
+ rx_cnt);
stmmac_napi_add(dev);
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 860644d182ab..1a269fa8c1a0 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -4503,7 +4503,7 @@ static int niu_alloc_channels(struct niu *np)
err = niu_rbr_fill(np, rp, GFP_KERNEL);
if (err)
- return err;
+ goto out_err;
}
tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 4074310abcff..e4af1f506b83 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -2153,7 +2153,8 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
return 0;
err_of_clear:
- of_platform_device_destroy(common->mdio_dev, NULL);
+ if (common->mdio_dev)
+ of_platform_device_destroy(common->mdio_dev, NULL);
err_pm_clear:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
@@ -2179,7 +2180,8 @@ static int am65_cpsw_nuss_remove(struct platform_device *pdev)
*/
am65_cpsw_nuss_cleanup_ndev(common);
- of_platform_device_destroy(common->mdio_dev, NULL);
+ if (common->mdio_dev)
+ of_platform_device_destroy(common->mdio_dev, NULL);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index dcbe278086dc..6a5f40f11db3 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -207,6 +207,12 @@ static const enum gpiod_flags gpio_flags[] = {
*/
#define SFP_PHY_ADDR 22
+/* SFP_EEPROM_BLOCK_SIZE is the size of data chunk to read the EEPROM
+ * at a time. Some SFP modules and also some Linux I2C drivers do not like
+ * reads longer than 16 bytes.
+ */
+#define SFP_EEPROM_BLOCK_SIZE 16
+
struct sff_data {
unsigned int gpios;
bool (*module_supported)(const struct sfp_eeprom_id *id);
@@ -1754,11 +1760,7 @@ static int sfp_sm_mod_probe(struct sfp *sfp, bool report)
u8 check;
int ret;
- /* Some SFP modules and also some Linux I2C drivers do not like reads
- * longer than 16 bytes, so read the EEPROM in chunks of 16 bytes at
- * a time.
- */
- sfp->i2c_block_size = 16;
+ sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
ret = sfp_read(sfp, false, 0, &id.base, sizeof(id.base));
if (ret < 0) {
@@ -2385,6 +2387,7 @@ static struct sfp *sfp_alloc(struct device *dev)
return ERR_PTR(-ENOMEM);
sfp->dev = dev;
+ sfp->i2c_block_size = SFP_EEPROM_BLOCK_SIZE;
mutex_init(&sfp->sm_mutex);
mutex_init(&sfp->st_mutex);
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index b0024893a1cb..50c34630ca30 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -183,7 +183,7 @@ static const struct mwifiex_pcie_device mwifiex_pcie8997 = {
.can_ext_scan = true,
};
-static const struct of_device_id mwifiex_pcie_of_match_table[] = {
+static const struct of_device_id mwifiex_pcie_of_match_table[] __maybe_unused = {
{ .compatible = "pci11ab,2b42" },
{ .compatible = "pci1b4b,2b42" },
{ }
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 7fb6eef40928..b09e60fedeb1 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -484,7 +484,7 @@ static struct memory_type_mapping mem_type_mapping_tbl[] = {
{"EXTLAST", NULL, 0, 0xFE},
};
-static const struct of_device_id mwifiex_sdio_of_match_table[] = {
+static const struct of_device_id mwifiex_sdio_of_match_table[] __maybe_unused = {
{ .compatible = "marvell,sd8787" },
{ .compatible = "marvell,sd8897" },
{ .compatible = "marvell,sd8997" },
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index 7bfdf5ad77c4..82b658a3c220 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -764,34 +764,32 @@ static const struct pinconf_ops amd_pinconf_ops = {
.pin_config_group_set = amd_pinconf_group_set,
};
-static void amd_gpio_irq_init_pin(struct amd_gpio *gpio_dev, int pin)
+static void amd_gpio_irq_init(struct amd_gpio *gpio_dev)
{
- const struct pin_desc *pd;
+ struct pinctrl_desc *desc = gpio_dev->pctrl->desc;
unsigned long flags;
u32 pin_reg, mask;
+ int i;
mask = BIT(WAKE_CNTRL_OFF_S0I3) | BIT(WAKE_CNTRL_OFF_S3) |
BIT(INTERRUPT_MASK_OFF) | BIT(INTERRUPT_ENABLE_OFF) |
BIT(WAKE_CNTRL_OFF_S4);
- pd = pin_desc_get(gpio_dev->pctrl, pin);
- if (!pd)
- return;
+ for (i = 0; i < desc->npins; i++) {
+ int pin = desc->pins[i].number;
+ const struct pin_desc *pd = pin_desc_get(gpio_dev->pctrl, pin);
- raw_spin_lock_irqsave(&gpio_dev->lock, flags);
- pin_reg = readl(gpio_dev->base + pin * 4);
- pin_reg &= ~mask;
- writel(pin_reg, gpio_dev->base + pin * 4);
- raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
-}
+ if (!pd)
+ continue;
-static void amd_gpio_irq_init(struct amd_gpio *gpio_dev)
-{
- struct pinctrl_desc *desc = gpio_dev->pctrl->desc;
- int i;
+ raw_spin_lock_irqsave(&gpio_dev->lock, flags);
- for (i = 0; i < desc->npins; i++)
- amd_gpio_irq_init_pin(gpio_dev, i);
+ pin_reg = readl(gpio_dev->base + i * 4);
+ pin_reg &= ~mask;
+ writel(pin_reg, gpio_dev->base + i * 4);
+
+ raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
+ }
}
#ifdef CONFIG_PM_SLEEP
@@ -844,10 +842,8 @@ static int amd_gpio_resume(struct device *dev)
for (i = 0; i < desc->npins; i++) {
int pin = desc->pins[i].number;
- if (!amd_gpio_should_save(gpio_dev, pin)) {
- amd_gpio_irq_init_pin(gpio_dev, pin);
+ if (!amd_gpio_should_save(gpio_dev, pin))
continue;
- }
raw_spin_lock_irqsave(&gpio_dev->lock, flags);
gpio_dev->saved_regs[i] |= readl(gpio_dev->base + pin * 4) & PIN_IRQ_PENDING;
diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
index d89e08efd2ad..0a4f02e4ae7b 100644
--- a/drivers/power/supply/cros_usbpd-charger.c
+++ b/drivers/power/supply/cros_usbpd-charger.c
@@ -276,7 +276,7 @@ static int cros_usbpd_charger_get_power_info(struct port_data *port)
port->psy_current_max = 0;
break;
default:
- dev_err(dev, "Port %d: default case!\n", port->port_number);
+ dev_dbg(dev, "Port %d: default case!\n", port->port_number);
port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
}
diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
index c1c337969e4e..d4f4a133656c 100644
--- a/drivers/pwm/pwm-cros-ec.c
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -154,6 +154,7 @@ static void cros_ec_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->enabled = (ret > 0);
state->period = EC_PWM_MAX_DUTY;
+ state->polarity = PWM_POLARITY_NORMAL;
/*
* Note that "disabled" and "duty cycle == 0" are treated the same. If
diff --git a/drivers/pwm/pwm-sprd.c b/drivers/pwm/pwm-sprd.c
index 9eeb59cb81b6..b23456d38bd2 100644
--- a/drivers/pwm/pwm-sprd.c
+++ b/drivers/pwm/pwm-sprd.c
@@ -109,6 +109,7 @@ static void sprd_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
duty = val & SPRD_PWM_DUTY_MSK;
tmp = (prescale + 1) * NSEC_PER_SEC * duty;
state->duty_cycle = DIV_ROUND_CLOSEST_ULL(tmp, chn->clk_rate);
+ state->polarity = PWM_POLARITY_NORMAL;
/* Disable PWM clocks if the PWM channel is not in enable state. */
if (!state->enabled)
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 252d7881f99c..def9fac7aa4f 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -721,13 +721,12 @@ static int iscsi_sw_tcp_conn_set_param(struct iscsi_cls_conn *cls_conn,
iscsi_set_param(cls_conn, param, buf, buflen);
break;
case ISCSI_PARAM_DATADGST_EN:
- iscsi_set_param(cls_conn, param, buf, buflen);
-
mutex_lock(&tcp_sw_conn->sock_lock);
if (!tcp_sw_conn->sock) {
mutex_unlock(&tcp_sw_conn->sock_lock);
return -ENOTCONN;
}
+ iscsi_set_param(cls_conn, param, buf, buflen);
tcp_sw_conn->sendpage = conn->datadgst_en ?
sock_no_sendpage : tcp_sw_conn->sock->ops->sendpage;
mutex_unlock(&tcp_sw_conn->sock_lock);
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 1707d6d144d2..6a1428d453f3 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -503,9 +503,6 @@ static int ses_enclosure_find_by_addr(struct enclosure_device *edev,
int i;
struct ses_component *scomp;
- if (!edev->component[0].scratch)
- return 0;
-
for (i = 0; i < edev->components; i++) {
scomp = edev->component[i].scratch;
if (scomp->addr != efd->addr)
@@ -596,8 +593,10 @@ static void ses_enclosure_data_process(struct enclosure_device *edev,
components++,
type_ptr[0],
name);
- else
+ else if (components < edev->components)
ecomp = &edev->component[components++];
+ else
+ ecomp = ERR_PTR(-EINVAL);
if (!IS_ERR(ecomp)) {
if (addl_desc_ptr) {
@@ -728,11 +727,6 @@ static int ses_intf_add(struct device *cdev,
components += type_ptr[1];
}
- if (components == 0) {
- sdev_printk(KERN_WARNING, sdev, "enclosure has no enumerated components\n");
- goto err_free;
- }
-
ses_dev->page1 = buf;
ses_dev->page1_len = len;
buf = NULL;
@@ -774,9 +768,11 @@ static int ses_intf_add(struct device *cdev,
buf = NULL;
}
page2_not_supported:
- scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL);
- if (!scomp)
- goto err_free;
+ if (components > 0) {
+ scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL);
+ if (!scomp)
+ goto err_free;
+ }
edev = enclosure_register(cdev->parent, dev_name(&sdev->sdev_gendev),
components, &ses_enclosure_callbacks);
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 99f29bd930bd..f481c260b704 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -809,11 +809,17 @@ static unsigned int lpuart32_tx_empty(struct uart_port *port)
struct lpuart_port, port);
unsigned long stat = lpuart32_read(port, UARTSTAT);
unsigned long sfifo = lpuart32_read(port, UARTFIFO);
+ unsigned long ctrl = lpuart32_read(port, UARTCTRL);
if (sport->dma_tx_in_progress)
return 0;
- if (stat & UARTSTAT_TC && sfifo & UARTFIFO_TXEMPT)
+ /*
+ * LPUART Transmission Complete Flag may never be set while queuing a break
+ * character, so avoid checking for transmission complete when UARTCTRL_SBK
+ * is asserted.
+ */
+ if ((stat & UARTSTAT_TC && sfifo & UARTFIFO_TXEMPT) || ctrl & UARTCTRL_SBK)
return TIOCSER_TEMT;
return 0;
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 8d924727d6f0..a7c28543c6f7 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -31,6 +31,7 @@
#include <linux/ioport.h>
#include <linux/ktime.h>
#include <linux/major.h>
+#include <linux/minmax.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/of.h>
@@ -2923,6 +2924,13 @@ static int sci_init_single(struct platform_device *dev,
sci_port->irqs[i] = platform_get_irq(dev, i);
}
+ /*
+ * The fourth interrupt on SCI port is transmit end interrupt, so
+ * shuffle the interrupts.
+ */
+ if (p->type == PORT_SCI)
+ swap(sci_port->irqs[SCIx_BRI_IRQ], sci_port->irqs[SCIx_TEI_IRQ]);
+
/* The SCI generates several interrupts. They can be muxed together or
* connected to different interrupt lines. In the muxed case only one
* interrupt resource is specified as there is only one interrupt ID.
@@ -2988,7 +2996,7 @@ static int sci_init_single(struct platform_device *dev,
port->flags = UPF_FIXED_PORT | UPF_BOOT_AUTOCONF | p->flags;
port->fifosize = sci_port->params->fifosize;
- if (port->type == PORT_SCI) {
+ if (port->type == PORT_SCI && !dev->dev.of_node) {
if (sci_port->reg_size >= 0x20)
port->regshift = 2;
else
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 246a3d274142..9fa4f8f39830 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -1175,6 +1175,9 @@ static void tegra_xhci_id_work(struct work_struct *work)
mutex_unlock(&tegra->lock);
+ tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion(tegra->padctl,
+ tegra->otg_usb2_port);
+
if (tegra->host_mode) {
/* switch to host mode */
if (tegra->otg_usb3_port >= 0) {
@@ -1243,9 +1246,6 @@ static int tegra_xhci_id_notify(struct notifier_block *nb,
}
tegra->otg_usb2_port = tegra_xusb_get_usb2_port(tegra, usbphy);
- tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion(
- tegra->padctl,
- tegra->otg_usb2_port);
tegra->host_mode = (usbphy->last_event == USB_EVENT_ID) ? true : false;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 473b0b64dd57..b069fe3f8ab0 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -9,6 +9,7 @@
*/
#include <linux/pci.h>
+#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/irq.h>
#include <linux/log2.h>
@@ -226,6 +227,7 @@ int xhci_reset(struct xhci_hcd *xhci, u64 timeout_us)
static void xhci_zero_64b_regs(struct xhci_hcd *xhci)
{
struct device *dev = xhci_to_hcd(xhci)->self.sysdev;
+ struct iommu_domain *domain;
int err, i;
u64 val;
u32 intrs;
@@ -244,7 +246,9 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci)
* an iommu. Doing anything when there is no iommu is definitely
* unsafe...
*/
- if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !device_iommu_mapped(dev))
+ domain = iommu_get_domain_for_dev(dev);
+ if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !domain ||
+ domain->type == IOMMU_DOMAIN_IDENTITY)
return;
xhci_info(xhci, "Zeroing 64bit base registers, expecting fault\n");
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 9ee0fa775612..045e24174e1a 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -124,6 +124,7 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */
{ USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */
{ USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */
+ { USB_DEVICE(0x10C4, 0x82AA) }, /* Silicon Labs IFS-USB-DATACABLE used with Quint UPS */
{ USB_DEVICE(0x10C4, 0x82EF) }, /* CESINEL FALCO 6105 AC Power Supply */
{ USB_DEVICE(0x10C4, 0x82F1) }, /* CESINEL MEDCAL EFD Earth Fault Detector */
{ USB_DEVICE(0x10C4, 0x82F2) }, /* CESINEL MEDCAL ST Network Analyzer */
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 14a7af7f3bcd..da8b7bd39703 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1198,6 +1198,8 @@ static const struct usb_device_id option_ids[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM520N, 0xff, 0xff, 0x30) },
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM520N, 0xff, 0, 0x40) },
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM520N, 0xff, 0, 0) },
+ { USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, 0x0900, 0xff, 0, 0), /* RM500U-CN */
+ .driver_info = ZLP },
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200U, 0xff, 0, 0) },
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200S_CN, 0xff, 0, 0) },
{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200T, 0xff, 0, 0) },
@@ -1300,6 +1302,14 @@ static const struct usb_device_id option_ids[] = {
.driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1075, 0xff), /* Telit FN990 (PCIe) */
.driver_info = RSVD(0) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1080, 0xff), /* Telit FE990 (rmnet) */
+ .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1081, 0xff), /* Telit FE990 (MBIM) */
+ .driver_info = NCTRL(0) | RSVD(1) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1082, 0xff), /* Telit FE990 (RNDIS) */
+ .driver_info = NCTRL(2) | RSVD(3) },
+ { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1083, 0xff), /* Telit FE990 (ECM) */
+ .driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
.driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index e8eaca5a84db..07b656172068 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -101,8 +101,12 @@ static int dp_altmode_configure(struct dp_altmode *dp, u8 con)
if (dp->data.status & DP_STATUS_PREFER_MULTI_FUNC &&
pin_assign & DP_PIN_ASSIGN_MULTI_FUNC_MASK)
pin_assign &= DP_PIN_ASSIGN_MULTI_FUNC_MASK;
- else if (pin_assign & DP_PIN_ASSIGN_DP_ONLY_MASK)
+ else if (pin_assign & DP_PIN_ASSIGN_DP_ONLY_MASK) {
pin_assign &= DP_PIN_ASSIGN_DP_ONLY_MASK;
+ /* Default to pin assign C if available */
+ if (pin_assign & BIT(DP_PIN_ASSIGN_C))
+ pin_assign = BIT(DP_PIN_ASSIGN_C);
+ }
if (!pin_assign)
return -EINVAL;
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index d787a344b3b8..1704deaf4152 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1117,6 +1117,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
case FBIOPUT_VSCREENINFO:
if (copy_from_user(&var, argp, sizeof(var)))
return -EFAULT;
+ /* only for kernel-internal use */
+ var.activate &= ~FB_ACTIVATE_KD_TEXT;
console_lock();
lock_fb_info(info);
ret = fbcon_modechange_possible(info, &var);
diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
index f0f1e3b2e463..4cbe6ba52754 100644
--- a/drivers/watchdog/sbsa_gwdt.c
+++ b/drivers/watchdog/sbsa_gwdt.c
@@ -121,6 +121,7 @@ static int sbsa_gwdt_set_timeout(struct watchdog_device *wdd,
struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);
wdd->timeout = timeout;
+ timeout = clamp_t(unsigned int, timeout, 1, wdd->max_hw_heartbeat_ms / 1000);
if (action)
writel(gwdt->clk * timeout,
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f2abd8bfd4a0..2a7778a88f03 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2246,6 +2246,23 @@ static int btrfs_init_csum_hash(struct btrfs_fs_info *fs_info, u16 csum_type)
fs_info->csum_shash = csum_shash;
+ /*
+ * Check if the checksum implementation is a fast accelerated one.
+ * As-is this is a bit of a hack and should be replaced once the csum
+ * implementations provide that information themselves.
+ */
+ switch (csum_type) {
+ case BTRFS_CSUM_TYPE_CRC32:
+ if (!strstr(crypto_shash_driver_name(csum_shash), "generic"))
+ set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags);
+ break;
+ default:
+ break;
+ }
+
+ btrfs_info(fs_info, "using %s (%s) checksum algorithm",
+ btrfs_super_csum_name(csum_type),
+ crypto_shash_driver_name(csum_shash));
return 0;
}
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8bf8cdb62a3a..b33505330e33 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1692,8 +1692,6 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
} else {
snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
btrfs_sb(s)->bdev_holder = fs_type;
- if (!strstr(crc32c_impl(), "generic"))
- set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags);
error = btrfs_fill_super(s, fs_devices, data);
}
if (!error)
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index af2064e36ac6..f5b7ad0847f2 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -875,8 +875,8 @@ static const struct cred *get_backchannel_cred(struct nfs4_client *clp, struct r
if (!kcred)
return NULL;
- kcred->uid = ses->se_cb_sec.uid;
- kcred->gid = ses->se_cb_sec.gid;
+ kcred->fsuid = ses->se_cb_sec.uid;
+ kcred->fsgid = ses->se_cb_sec.gid;
return kcred;
}
}
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 5ee4973525f0..5e835bbf1ffb 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2614,11 +2614,10 @@ static int nilfs_segctor_thread(void *arg)
goto loop;
end_thread:
- spin_unlock(&sci->sc_state_lock);
-
/* end sync. */
sci->sc_task = NULL;
wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */
+ spin_unlock(&sci->sc_state_lock);
return 0;
}
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 775184868763..9aae60d9a32e 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -482,6 +482,7 @@ static void nilfs_put_super(struct super_block *sb)
up_write(&nilfs->ns_sem);
}
+ nilfs_sysfs_delete_device_group(nilfs);
iput(nilfs->ns_sufile);
iput(nilfs->ns_cpfile);
iput(nilfs->ns_dat);
@@ -1105,6 +1106,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
nilfs_put_root(fsroot);
failed_unload:
+ nilfs_sysfs_delete_device_group(nilfs);
iput(nilfs->ns_sufile);
iput(nilfs->ns_cpfile);
iput(nilfs->ns_dat);
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 38a1206cf948..d8d08fa5c340 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -87,7 +87,6 @@ void destroy_nilfs(struct the_nilfs *nilfs)
{
might_sleep();
if (nilfs_init(nilfs)) {
- nilfs_sysfs_delete_device_group(nilfs);
brelse(nilfs->ns_sbh[0]);
brelse(nilfs->ns_sbh[1]);
}
@@ -305,6 +304,10 @@ int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
goto failed;
}
+ err = nilfs_sysfs_create_device_group(sb);
+ if (unlikely(err))
+ goto sysfs_error;
+
if (valid_fs)
goto skip_recovery;
@@ -366,6 +369,9 @@ int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb)
goto failed;
failed_unload:
+ nilfs_sysfs_delete_device_group(nilfs);
+
+ sysfs_error:
iput(nilfs->ns_cpfile);
iput(nilfs->ns_sufile);
iput(nilfs->ns_dat);
@@ -697,10 +703,6 @@ int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
if (err)
goto failed_sbh;
- err = nilfs_sysfs_create_device_group(sb);
- if (err)
- goto failed_sbh;
-
set_nilfs_init(nilfs);
err = 0;
out:
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 3e06e9a8cf59..42465693dbdc 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -3396,10 +3396,12 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
ocfs2_lock_res_free(&osb->osb_nfs_sync_lockres);
ocfs2_lock_res_free(&osb->osb_orphan_scan.os_lockres);
- ocfs2_cluster_disconnect(osb->cconn, hangup_pending);
- osb->cconn = NULL;
+ if (osb->cconn) {
+ ocfs2_cluster_disconnect(osb->cconn, hangup_pending);
+ osb->cconn = NULL;
- ocfs2_dlm_shutdown_debug(osb);
+ ocfs2_dlm_shutdown_debug(osb);
+ }
}
static int ocfs2_drop_lock(struct ocfs2_super *osb,
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 3e0b2e3e00ad..04ce30ae4404 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1922,8 +1922,7 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
!ocfs2_is_hard_readonly(osb))
hangup_needed = 1;
- if (osb->cconn)
- ocfs2_dlm_shutdown(osb, hangup_needed);
+ ocfs2_dlm_shutdown(osb, hangup_needed);
ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
debugfs_remove_recursive(osb->osb_debug_root);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index cd7c6c4af83a..1655b7b2a5ab 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -1106,6 +1106,11 @@ static int sysctl_check_table_array(const char *path, struct ctl_table *table)
err |= sysctl_err(path, table, "array not allowed");
}
+ if (table->proc_handler == proc_dou8vec_minmax) {
+ if (table->maxlen != sizeof(u8))
+ err |= sysctl_err(path, table, "array not allowed");
+ }
+
return err;
}
@@ -1121,6 +1126,7 @@ static int sysctl_check_table(const char *path, struct ctl_table *table)
(table->proc_handler == proc_douintvec) ||
(table->proc_handler == proc_douintvec_minmax) ||
(table->proc_handler == proc_dointvec_minmax) ||
+ (table->proc_handler == proc_dou8vec_minmax) ||
(table->proc_handler == proc_dointvec_jiffies) ||
(table->proc_handler == proc_dointvec_userhz_jiffies) ||
(table->proc_handler == proc_dointvec_ms_jiffies) ||
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 1bd3a0356ae4..b9dd113599eb 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -811,7 +811,7 @@ static inline void __ftrace_enabled_restore(int enabled)
#define CALLER_ADDR5 ((unsigned long)ftrace_return_address(5))
#define CALLER_ADDR6 ((unsigned long)ftrace_return_address(6))
-static inline unsigned long get_lock_parent_ip(void)
+static __always_inline unsigned long get_lock_parent_ip(void)
{
unsigned long addr = CALLER_ADDR0;
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index a1f12e959bba..3c1deba496c9 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -380,8 +380,8 @@ extern note_buf_t __percpu *crash_notes;
extern bool kexec_in_progress;
int crash_shrink_memory(unsigned long new_size);
-size_t crash_get_memory_size(void);
void crash_free_reserved_phys_range(unsigned long begin, unsigned long end);
+ssize_t crash_get_memory_size(void);
void arch_kexec_protect_crashkres(void);
void arch_kexec_unprotect_crashkres(void);
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 161eba9fd912..4393de94cb32 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -53,6 +53,8 @@ int proc_douintvec(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_dointvec_minmax(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_douintvec_minmax(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
+int proc_dou8vec_minmax(struct ctl_table *table, int write, void *buffer,
+ size_t *lenp, loff_t *ppos);
int proc_dointvec_jiffies(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_dointvec_userhz_jiffies(struct ctl_table *, int, void *, size_t *,
loff_t *);
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 75484f425e55..d8b320cf54ba 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -84,41 +84,41 @@ struct netns_ipv4 {
struct xt_table *nat_table;
#endif
- int sysctl_icmp_echo_ignore_all;
- int sysctl_icmp_echo_ignore_broadcasts;
- int sysctl_icmp_ignore_bogus_error_responses;
+ u8 sysctl_icmp_echo_ignore_all;
+ u8 sysctl_icmp_echo_ignore_broadcasts;
+ u8 sysctl_icmp_ignore_bogus_error_responses;
+ u8 sysctl_icmp_errors_use_inbound_ifaddr;
int sysctl_icmp_ratelimit;
int sysctl_icmp_ratemask;
- int sysctl_icmp_errors_use_inbound_ifaddr;
struct local_ports ip_local_ports;
- int sysctl_tcp_ecn;
- int sysctl_tcp_ecn_fallback;
+ u8 sysctl_tcp_ecn;
+ u8 sysctl_tcp_ecn_fallback;
- int sysctl_ip_default_ttl;
- int sysctl_ip_no_pmtu_disc;
- int sysctl_ip_fwd_use_pmtu;
+ u8 sysctl_ip_default_ttl;
+ u8 sysctl_ip_no_pmtu_disc;
+ u8 sysctl_ip_fwd_use_pmtu;
int sysctl_ip_fwd_update_priority;
- int sysctl_ip_nonlocal_bind;
- int sysctl_ip_autobind_reuse;
+ u8 sysctl_ip_nonlocal_bind;
+ u8 sysctl_ip_autobind_reuse;
/* Shall we try to damage output packets if routing dev changes? */
- int sysctl_ip_dynaddr;
- int sysctl_ip_early_demux;
+ u8 sysctl_ip_dynaddr;
+ u8 sysctl_ip_early_demux;
#ifdef CONFIG_NET_L3_MASTER_DEV
- int sysctl_raw_l3mdev_accept;
+ u8 sysctl_raw_l3mdev_accept;
#endif
int sysctl_tcp_early_demux;
int sysctl_udp_early_demux;
- int sysctl_nexthop_compat_mode;
+ u8 sysctl_nexthop_compat_mode;
- int sysctl_fwmark_reflect;
- int sysctl_tcp_fwmark_accept;
+ u8 sysctl_fwmark_reflect;
+ u8 sysctl_tcp_fwmark_accept;
#ifdef CONFIG_NET_L3_MASTER_DEV
- int sysctl_tcp_l3mdev_accept;
+ u8 sysctl_tcp_l3mdev_accept;
#endif
- int sysctl_tcp_mtu_probing;
+ u8 sysctl_tcp_mtu_probing;
int sysctl_tcp_mtu_probe_floor;
int sysctl_tcp_base_mss;
int sysctl_tcp_min_snd_mss;
@@ -126,46 +126,47 @@ struct netns_ipv4 {
u32 sysctl_tcp_probe_interval;
int sysctl_tcp_keepalive_time;
- int sysctl_tcp_keepalive_probes;
int sysctl_tcp_keepalive_intvl;
+ u8 sysctl_tcp_keepalive_probes;
- int sysctl_tcp_syn_retries;
- int sysctl_tcp_synack_retries;
- int sysctl_tcp_syncookies;
+ u8 sysctl_tcp_syn_retries;
+ u8 sysctl_tcp_synack_retries;
+ u8 sysctl_tcp_syncookies;
int sysctl_tcp_reordering;
- int sysctl_tcp_retries1;
- int sysctl_tcp_retries2;
- int sysctl_tcp_orphan_retries;
+ u8 sysctl_tcp_retries1;
+ u8 sysctl_tcp_retries2;
+ u8 sysctl_tcp_orphan_retries;
+ u8 sysctl_tcp_tw_reuse;
int sysctl_tcp_fin_timeout;
unsigned int sysctl_tcp_notsent_lowat;
- int sysctl_tcp_tw_reuse;
- int sysctl_tcp_sack;
- int sysctl_tcp_window_scaling;
- int sysctl_tcp_timestamps;
- int sysctl_tcp_early_retrans;
- int sysctl_tcp_recovery;
- int sysctl_tcp_thin_linear_timeouts;
- int sysctl_tcp_slow_start_after_idle;
- int sysctl_tcp_retrans_collapse;
- int sysctl_tcp_stdurg;
- int sysctl_tcp_rfc1337;
- int sysctl_tcp_abort_on_overflow;
- int sysctl_tcp_fack;
+ u8 sysctl_tcp_sack;
+ u8 sysctl_tcp_window_scaling;
+ u8 sysctl_tcp_timestamps;
+ u8 sysctl_tcp_early_retrans;
+ u8 sysctl_tcp_recovery;
+ u8 sysctl_tcp_thin_linear_timeouts;
+ u8 sysctl_tcp_slow_start_after_idle;
+ u8 sysctl_tcp_retrans_collapse;
+ u8 sysctl_tcp_stdurg;
+ u8 sysctl_tcp_rfc1337;
+ u8 sysctl_tcp_abort_on_overflow;
+ u8 sysctl_tcp_fack; /* obsolete */
int sysctl_tcp_max_reordering;
- int sysctl_tcp_dsack;
- int sysctl_tcp_app_win;
int sysctl_tcp_adv_win_scale;
- int sysctl_tcp_frto;
- int sysctl_tcp_nometrics_save;
- int sysctl_tcp_no_ssthresh_metrics_save;
- int sysctl_tcp_moderate_rcvbuf;
- int sysctl_tcp_tso_win_divisor;
- int sysctl_tcp_workaround_signed_windows;
+ u8 sysctl_tcp_dsack;
+ u8 sysctl_tcp_app_win;
+ u8 sysctl_tcp_frto;
+ u8 sysctl_tcp_nometrics_save;
+ u8 sysctl_tcp_no_ssthresh_metrics_save;
+ u8 sysctl_tcp_moderate_rcvbuf;
+ u8 sysctl_tcp_tso_win_divisor;
+ u8 sysctl_tcp_workaround_signed_windows;
int sysctl_tcp_limit_output_bytes;
int sysctl_tcp_challenge_ack_limit;
- int sysctl_tcp_min_tso_segs;
int sysctl_tcp_min_rtt_wlen;
- int sysctl_tcp_autocorking;
+ u8 sysctl_tcp_min_tso_segs;
+ u8 sysctl_tcp_autocorking;
+ u8 sysctl_tcp_reflect_tos;
int sysctl_tcp_invalid_ratelimit;
int sysctl_tcp_pacing_ss_ratio;
int sysctl_tcp_pacing_ca_ratio;
@@ -183,7 +184,6 @@ struct netns_ipv4 {
unsigned int sysctl_tcp_fastopen_blackhole_timeout;
atomic_t tfo_active_disable_times;
unsigned long tfo_active_disable_stamp;
- int sysctl_tcp_reflect_tos;
int sysctl_udp_wmem_min;
int sysctl_udp_rmem_min;
diff --git a/init/Kconfig b/init/Kconfig
index eba883d6d9ed..9807c66b24bb 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -47,6 +47,18 @@ config CLANG_VERSION
int
default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
+config AS_IS_GNU
+ def_bool $(success,test "$(as-name)" = GNU)
+
+config AS_IS_LLVM
+ def_bool $(success,test "$(as-name)" = LLVM)
+
+config AS_VERSION
+ int
+ # Use clang version if this is the integrated assembler
+ default CLANG_VERSION if AS_IS_LLVM
+ default $(as-version)
+
config LLD_VERSION
int
default $(shell,$(srctree)/scripts/lld-version.sh $(LD))
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 43270b07b2e0..b476591168dc 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2188,11 +2188,15 @@ static int cpuset_can_attach(struct cgroup_taskset *tset)
static void cpuset_cancel_attach(struct cgroup_taskset *tset)
{
struct cgroup_subsys_state *css;
+ struct cpuset *cs;
cgroup_taskset_first(tset, &css);
+ cs = css_cs(css);
percpu_down_write(&cpuset_rwsem);
- css_cs(css)->attach_in_progress--;
+ cs->attach_in_progress--;
+ if (!cs->attach_in_progress)
+ wake_up(&cpuset_attach_wq);
percpu_up_write(&cpuset_rwsem);
}
diff --git a/kernel/events/core.c b/kernel/events/core.c
index e2e1371fbb9d..f0df3bc0e641 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -11622,7 +11622,7 @@ perf_event_set_output(struct perf_event *event, struct perf_event *output_event)
/*
* If its not a per-cpu rb, it must be the same task.
*/
- if (output_event->cpu == -1 && output_event->ctx != event->ctx)
+ if (output_event->cpu == -1 && output_event->hw.target != event->hw.target)
goto out;
/*
diff --git a/kernel/kexec.c b/kernel/kexec.c
index c82c6c06f051..f0f0c6555454 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -110,6 +110,14 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
unsigned long i;
int ret;
+ /*
+ * Because we write directly to the reserved memory region when loading
+ * crash kernels we need a serialization here to prevent multiple crash
+ * kernels from attempting to load simultaneously.
+ */
+ if (!kexec_trylock())
+ return -EBUSY;
+
if (flags & KEXEC_ON_CRASH) {
dest_image = &kexec_crash_image;
if (kexec_crash_image)
@@ -121,7 +129,8 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
if (nr_segments == 0) {
/* Uninstall image */
kimage_free(xchg(dest_image, NULL));
- return 0;
+ ret = 0;
+ goto out_unlock;
}
if (flags & KEXEC_ON_CRASH) {
/*
@@ -134,7 +143,7 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
ret = kimage_alloc_init(&image, entry, nr_segments, segments, flags);
if (ret)
- return ret;
+ goto out_unlock;
if (flags & KEXEC_PRESERVE_CONTEXT)
image->preserve_context = 1;
@@ -171,6 +180,8 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
arch_kexec_protect_crashkres();
kimage_free(image);
+out_unlock:
+ kexec_unlock();
return ret;
}
@@ -247,21 +258,8 @@ SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments,
((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH_DEFAULT))
return -EINVAL;
- /* Because we write directly to the reserved memory
- * region when loading crash kernels we need a mutex here to
- * prevent multiple crash kernels from attempting to load
- * simultaneously, and to prevent a crash kernel from loading
- * over the top of a in use crash kernel.
- *
- * KISS: always take the mutex.
- */
- if (!mutex_trylock(&kexec_mutex))
- return -EBUSY;
-
result = do_kexec_load(entry, nr_segments, segments, flags);
- mutex_unlock(&kexec_mutex);
-
return result;
}
@@ -301,21 +299,8 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry,
return -EFAULT;
}
- /* Because we write directly to the reserved memory
- * region when loading crash kernels we need a mutex here to
- * prevent multiple crash kernels from attempting to load
- * simultaneously, and to prevent a crash kernel from loading
- * over the top of a in use crash kernel.
- *
- * KISS: always take the mutex.
- */
- if (!mutex_trylock(&kexec_mutex))
- return -EBUSY;
-
result = do_kexec_load(entry, nr_segments, ksegments, flags);
- mutex_unlock(&kexec_mutex);
-
return result;
}
#endif
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index c589c7a9562c..7a8104d48997 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -45,7 +45,7 @@
#include <crypto/sha.h>
#include "kexec_internal.h"
-DEFINE_MUTEX(kexec_mutex);
+atomic_t __kexec_lock = ATOMIC_INIT(0);
/* Per cpu memory for storing cpu states in case of system crash. */
note_buf_t __percpu *crash_notes;
@@ -943,7 +943,7 @@ int kexec_load_disabled;
*/
void __noclone __crash_kexec(struct pt_regs *regs)
{
- /* Take the kexec_mutex here to prevent sys_kexec_load
+ /* Take the kexec_lock here to prevent sys_kexec_load
* running on one cpu from replacing the crash kernel
* we are using after a panic on a different cpu.
*
@@ -951,7 +951,7 @@ void __noclone __crash_kexec(struct pt_regs *regs)
* of memory the xchg(&kexec_crash_image) would be
* sufficient. But since I reuse the memory...
*/
- if (mutex_trylock(&kexec_mutex)) {
+ if (kexec_trylock()) {
if (kexec_crash_image) {
struct pt_regs fixed_regs;
@@ -960,7 +960,7 @@ void __noclone __crash_kexec(struct pt_regs *regs)
machine_crash_shutdown(&fixed_regs);
machine_kexec(kexec_crash_image);
}
- mutex_unlock(&kexec_mutex);
+ kexec_unlock();
}
}
STACK_FRAME_NON_STANDARD(__crash_kexec);
@@ -989,14 +989,17 @@ void crash_kexec(struct pt_regs *regs)
}
}
-size_t crash_get_memory_size(void)
+ssize_t crash_get_memory_size(void)
{
- size_t size = 0;
+ ssize_t size = 0;
+
+ if (!kexec_trylock())
+ return -EBUSY;
- mutex_lock(&kexec_mutex);
if (crashk_res.end != crashk_res.start)
size = resource_size(&crashk_res);
- mutex_unlock(&kexec_mutex);
+
+ kexec_unlock();
return size;
}
@@ -1016,7 +1019,8 @@ int crash_shrink_memory(unsigned long new_size)
unsigned long old_size;
struct resource *ram_res;
- mutex_lock(&kexec_mutex);
+ if (!kexec_trylock())
+ return -EBUSY;
if (kexec_crash_image) {
ret = -ENOENT;
@@ -1054,7 +1058,7 @@ int crash_shrink_memory(unsigned long new_size)
insert_resource(&iomem_resource, ram_res);
unlock:
- mutex_unlock(&kexec_mutex);
+ kexec_unlock();
return ret;
}
@@ -1126,7 +1130,7 @@ int kernel_kexec(void)
{
int error = 0;
- if (!mutex_trylock(&kexec_mutex))
+ if (!kexec_trylock())
return -EBUSY;
if (!kexec_image) {
error = -EINVAL;
@@ -1201,7 +1205,7 @@ int kernel_kexec(void)
#endif
Unlock:
- mutex_unlock(&kexec_mutex);
+ kexec_unlock();
return error;
}
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index fff11916aba3..b9c857782ada 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -343,7 +343,7 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd,
image = NULL;
- if (!mutex_trylock(&kexec_mutex))
+ if (!kexec_trylock())
return -EBUSY;
dest_image = &kexec_image;
@@ -415,7 +415,7 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd,
if ((flags & KEXEC_FILE_ON_CRASH) && kexec_crash_image)
arch_kexec_protect_crashkres();
- mutex_unlock(&kexec_mutex);
+ kexec_unlock();
kimage_free(image);
return ret;
}
diff --git a/kernel/kexec_internal.h b/kernel/kexec_internal.h
index 39d30ccf8d87..49d4e3ab9c96 100644
--- a/kernel/kexec_internal.h
+++ b/kernel/kexec_internal.h
@@ -15,7 +15,20 @@ int kimage_is_destination_range(struct kimage *image,
int machine_kexec_post_load(struct kimage *image);
-extern struct mutex kexec_mutex;
+/*
+ * Whatever is used to serialize accesses to the kexec_crash_image needs to be
+ * NMI safe, as __crash_kexec() can happen during nmi_panic(), so here we use a
+ * "simple" atomic variable that is acquired with a cmpxchg().
+ */
+extern atomic_t __kexec_lock;
+static inline bool kexec_trylock(void)
+{
+ return atomic_cmpxchg_acquire(&__kexec_lock, 0, 1) == 0;
+}
+static inline void kexec_unlock(void)
+{
+ atomic_set_release(&__kexec_lock, 0);
+}
#ifdef CONFIG_KEXEC_FILE
#include <linux/purgatory.h>
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 35859da8bd4f..e20c19e3ba49 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -106,7 +106,12 @@ KERNEL_ATTR_RO(kexec_crash_loaded);
static ssize_t kexec_crash_size_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
- return sprintf(buf, "%zu\n", crash_get_memory_size());
+ ssize_t size = crash_get_memory_size();
+
+ if (size < 0)
+ return size;
+
+ return sprintf(buf, "%zd\n", size);
}
static ssize_t kexec_crash_size_store(struct kobject *kobj,
struct kobj_attribute *attr,
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bb70a7856277..57a58bc48021 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -9342,8 +9342,6 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
local->avg_load = (local->group_load * SCHED_CAPACITY_SCALE) /
local->group_capacity;
- sds->avg_load = (sds->total_load * SCHED_CAPACITY_SCALE) /
- sds->total_capacity;
/*
* If the local group is more loaded than the selected
* busiest group don't try to pull any tasks.
@@ -9352,6 +9350,19 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
env->imbalance = 0;
return;
}
+
+ sds->avg_load = (sds->total_load * SCHED_CAPACITY_SCALE) /
+ sds->total_capacity;
+
+ /*
+ * If the local group is more loaded than the average system
+ * load, don't try to pull any tasks.
+ */
+ if (local->avg_load >= sds->avg_load) {
+ env->imbalance = 0;
+ return;
+ }
+
}
/*
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index d8b7b2846313..d981abea0358 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1061,6 +1061,65 @@ int proc_douintvec_minmax(struct ctl_table *table, int write,
do_proc_douintvec_minmax_conv, ¶m);
}
+/**
+ * proc_dou8vec_minmax - read a vector of unsigned chars with min/max values
+ * @table: the sysctl table
+ * @write: %TRUE if this is a write to the sysctl file
+ * @buffer: the user buffer
+ * @lenp: the size of the user buffer
+ * @ppos: file position
+ *
+ * Reads/writes up to table->maxlen/sizeof(u8) unsigned chars
+ * values from/to the user buffer, treated as an ASCII string. Negative
+ * strings are not allowed.
+ *
+ * This routine will ensure the values are within the range specified by
+ * table->extra1 (min) and table->extra2 (max).
+ *
+ * Returns 0 on success or an error on write when the range check fails.
+ */
+int proc_dou8vec_minmax(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
+{
+ struct ctl_table tmp;
+ unsigned int min = 0, max = 255U, val;
+ u8 *data = table->data;
+ struct do_proc_douintvec_minmax_conv_param param = {
+ .min = &min,
+ .max = &max,
+ };
+ int res;
+
+ /* Do not support arrays yet. */
+ if (table->maxlen != sizeof(u8))
+ return -EINVAL;
+
+ if (table->extra1) {
+ min = *(unsigned int *) table->extra1;
+ if (min > 255U)
+ return -EINVAL;
+ }
+ if (table->extra2) {
+ max = *(unsigned int *) table->extra2;
+ if (max > 255U)
+ return -EINVAL;
+ }
+
+ tmp = *table;
+
+ tmp.maxlen = sizeof(val);
+ tmp.data = &val;
+ val = READ_ONCE(*data);
+ res = do_proc_douintvec(&tmp, write, buffer, lenp, ppos,
+ do_proc_douintvec_minmax_conv, ¶m);
+ if (res)
+ return res;
+ if (write)
+ WRITE_ONCE(*data, val);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(proc_dou8vec_minmax);
+
static int do_proc_dopipe_max_size_conv(unsigned long *lvalp,
unsigned int *valp,
int write, void *data)
@@ -1612,6 +1671,12 @@ int proc_douintvec_minmax(struct ctl_table *table, int write,
return -ENOSYS;
}
+int proc_dou8vec_minmax(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
+{
+ return -ENOSYS;
+}
+
int proc_dointvec_jiffies(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 67829b6e07bd..3dab978c156d 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5390,12 +5390,15 @@ int modify_ftrace_direct(unsigned long ip,
ret = 0;
}
- if (unlikely(ret && new_direct)) {
- direct->count++;
- list_del_rcu(&new_direct->next);
- synchronize_rcu_tasks();
- kfree(new_direct);
- ftrace_direct_func_count--;
+ if (ret) {
+ direct->addr = old_addr;
+ if (unlikely(new_direct)) {
+ direct->count++;
+ list_del_rcu(&new_direct->next);
+ synchronize_rcu_tasks();
+ kfree(new_direct);
+ ftrace_direct_func_count--;
+ }
}
out_unlock:
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 70da6f3212bc..21b07c7c6ee5 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2962,6 +2962,10 @@ rb_set_commit_to_write(struct ring_buffer_per_cpu *cpu_buffer)
if (RB_WARN_ON(cpu_buffer,
rb_is_reader_page(cpu_buffer->tail_page)))
return;
+ /*
+ * No need for a memory barrier here, as the update
+ * of the tail_page did it for this page.
+ */
local_set(&cpu_buffer->commit_page->page->commit,
rb_page_write(cpu_buffer->commit_page));
rb_inc_page(cpu_buffer, &cpu_buffer->commit_page);
@@ -2971,6 +2975,8 @@ rb_set_commit_to_write(struct ring_buffer_per_cpu *cpu_buffer)
while (rb_commit_index(cpu_buffer) !=
rb_page_write(cpu_buffer->commit_page)) {
+ /* Make sure the readers see the content of what is committed. */
+ smp_wmb();
local_set(&cpu_buffer->commit_page->page->commit,
rb_page_write(cpu_buffer->commit_page));
RB_WARN_ON(cpu_buffer,
@@ -4390,7 +4396,12 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
/*
* Make sure we see any padding after the write update
- * (see rb_reset_tail())
+ * (see rb_reset_tail()).
+ *
+ * In addition, a writer may be writing on the reader page
+ * if the page has not been fully filled, so the read barrier
+ * is also needed to make sure we see the content of what is
+ * committed by the writer (see rb_set_commit_to_write()).
*/
smp_rmb();
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ce45bdd9077d..482ec6606b7b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -8895,6 +8895,7 @@ static int __remove_instance(struct trace_array *tr)
ftrace_destroy_function_files(tr);
tracefs_remove(tr->dir);
free_trace_buffers(tr);
+ clear_tracing_err_log(tr);
for (i = 0; i < tr->nr_topts; i++) {
kfree(tr->topts[i].topts);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index d87d6971afc9..86ade667a7af 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -666,6 +666,7 @@ static void __del_from_avail_list(struct swap_info_struct *p)
{
int nid;
+ assert_spin_locked(&p->lock);
for_each_node(nid)
plist_del(&p->avail_lists[nid], &swap_avail_heads[nid]);
}
@@ -2611,8 +2612,8 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
spin_unlock(&swap_lock);
goto out_dput;
}
- del_from_avail_list(p);
spin_lock(&p->lock);
+ del_from_avail_list(p);
if (p->prio < 0) {
struct swap_info_struct *si = p;
int nid;
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c
index 220e8f4ac0cf..da056170849b 100644
--- a/net/9p/trans_xen.c
+++ b/net/9p/trans_xen.c
@@ -300,6 +300,10 @@ static void xen_9pfs_front_free(struct xen_9pfs_front_priv *priv)
write_unlock(&xen_9pfs_lock);
for (i = 0; i < priv->num_rings; i++) {
+ struct xen_9pfs_dataring *ring = &priv->rings[i];
+
+ cancel_work_sync(&ring->work);
+
if (!priv->rings[i].intf)
break;
if (priv->rings[i].irq > 0)
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 0db48c812662..b946a6379433 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -433,7 +433,7 @@ static void hidp_set_timer(struct hidp_session *session)
static void hidp_del_timer(struct hidp_session *session)
{
if (session->idle_to > 0)
- del_timer(&session->timer);
+ del_timer_sync(&session->timer);
}
static void hidp_process_report(struct hidp_session *session, int type,
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 367b1dec2e75..f9d2ce9cee36 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4647,33 +4647,27 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn,
BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid);
- mutex_lock(&conn->chan_lock);
-
- chan = __l2cap_get_chan_by_scid(conn, dcid);
+ chan = l2cap_get_chan_by_scid(conn, dcid);
if (!chan) {
- mutex_unlock(&conn->chan_lock);
cmd_reject_invalid_cid(conn, cmd->ident, dcid, scid);
return 0;
}
- l2cap_chan_hold(chan);
- l2cap_chan_lock(chan);
-
rsp.dcid = cpu_to_le16(chan->scid);
rsp.scid = cpu_to_le16(chan->dcid);
l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
chan->ops->set_shutdown(chan);
+ mutex_lock(&conn->chan_lock);
l2cap_chan_del(chan, ECONNRESET);
+ mutex_unlock(&conn->chan_lock);
chan->ops->close(chan);
l2cap_chan_unlock(chan);
l2cap_chan_put(chan);
- mutex_unlock(&conn->chan_lock);
-
return 0;
}
@@ -4693,33 +4687,27 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn,
BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid);
- mutex_lock(&conn->chan_lock);
-
- chan = __l2cap_get_chan_by_scid(conn, scid);
+ chan = l2cap_get_chan_by_scid(conn, scid);
if (!chan) {
mutex_unlock(&conn->chan_lock);
return 0;
}
- l2cap_chan_hold(chan);
- l2cap_chan_lock(chan);
-
if (chan->state != BT_DISCONN) {
l2cap_chan_unlock(chan);
l2cap_chan_put(chan);
- mutex_unlock(&conn->chan_lock);
return 0;
}
+ mutex_lock(&conn->chan_lock);
l2cap_chan_del(chan, 0);
+ mutex_unlock(&conn->chan_lock);
chan->ops->close(chan);
l2cap_chan_unlock(chan);
l2cap_chan_put(chan);
- mutex_unlock(&conn->chan_lock);
-
return 0;
}
diff --git a/net/can/isotp.c b/net/can/isotp.c
index f2f0bc7f0cb4..4360f33278c1 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1480,6 +1480,21 @@ static int isotp_init(struct sock *sk)
return 0;
}
+static __poll_t isotp_poll(struct file *file, struct socket *sock, poll_table *wait)
+{
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+
+ __poll_t mask = datagram_poll(file, sock, wait);
+ poll_wait(file, &so->wait, wait);
+
+ /* Check for false positives due to TX state */
+ if ((mask & EPOLLWRNORM) && (so->tx.state != ISOTP_IDLE))
+ mask &= ~(EPOLLOUT | EPOLLWRNORM);
+
+ return mask;
+}
+
static int isotp_sock_no_ioctlcmd(struct socket *sock, unsigned int cmd,
unsigned long arg)
{
@@ -1495,7 +1510,7 @@ static const struct proto_ops isotp_ops = {
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.getname = isotp_getname,
- .poll = datagram_poll,
+ .poll = isotp_poll,
.ioctl = isotp_sock_no_ioctlcmd,
.gettstamp = sock_gettstamp,
.listen = sock_no_listen,
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index 57d6aac7f435..5dcbb0b7d123 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -600,7 +600,10 @@ sk_buff *j1939_tp_tx_dat_new(struct j1939_priv *priv,
/* reserve CAN header */
skb_reserve(skb, offsetof(struct can_frame, data));
- memcpy(skb->cb, re_skcb, sizeof(skb->cb));
+ /* skb->cb must be large enough to hold a j1939_sk_buff_cb structure */
+ BUILD_BUG_ON(sizeof(skb->cb) < sizeof(*re_skcb));
+
+ memcpy(skb->cb, re_skcb, sizeof(*re_skcb));
skcb = j1939_skb_to_cb(skb);
if (swap_src_dst)
j1939_skbcb_swap(skcb);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 960948290001..2ad22511b9c6 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -137,6 +137,20 @@ static void queue_process(struct work_struct *work)
}
}
+static int netif_local_xmit_active(struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+
+ if (READ_ONCE(txq->xmit_lock_owner) == smp_processor_id())
+ return 1;
+ }
+
+ return 0;
+}
+
static void poll_one_napi(struct napi_struct *napi)
{
int work;
@@ -183,7 +197,10 @@ void netpoll_poll_dev(struct net_device *dev)
if (!ni || down_trylock(&ni->dev_lock))
return;
- if (!netif_running(dev)) {
+ /* Some drivers will take the same locks in poll and xmit,
+ * we can't poll if local CPU is already in xmit.
+ */
+ if (!netif_running(dev) || netif_local_xmit_active(dev)) {
up(&ni->dev_lock);
return;
}
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index a1aacf5e75a6..0bbc047e8f6e 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -755,6 +755,11 @@ void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info,
room = 576;
room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
+ /* Guard against tiny mtu. We need to include at least one
+ * IP network header for this message to make any sense.
+ */
+ if (room <= (int)sizeof(struct iphdr))
+ goto ende;
icmp_param.data_len = skb_in->len - icmp_param.offset;
if (icmp_param.data_len > room)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 439970e02ac6..3a34e9768bff 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -37,6 +37,7 @@ static int ip_local_port_range_min[] = { 1, 1 };
static int ip_local_port_range_max[] = { 65535, 65535 };
static int tcp_adv_win_scale_min = -31;
static int tcp_adv_win_scale_max = 31;
+static int tcp_app_win_max = 31;
static int tcp_min_snd_mss_min = TCP_MIN_SND_MSS;
static int tcp_min_snd_mss_max = 65535;
static int ip_privileged_port_min;
@@ -540,30 +541,30 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "icmp_echo_ignore_all",
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_all,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "icmp_echo_ignore_broadcasts",
.data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "icmp_ignore_bogus_error_responses",
.data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "icmp_errors_use_inbound_ifaddr",
.data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "icmp_ratelimit",
@@ -590,9 +591,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "raw_l3mdev_accept",
.data = &init_net.ipv4.sysctl_raw_l3mdev_accept,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
@@ -600,30 +601,30 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_ecn",
.data = &init_net.ipv4.sysctl_tcp_ecn,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_ecn_fallback",
.data = &init_net.ipv4.sysctl_tcp_ecn_fallback,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "ip_dynaddr",
.data = &init_net.ipv4.sysctl_ip_dynaddr,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "ip_early_demux",
.data = &init_net.ipv4.sysctl_ip_early_demux,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "udp_early_demux",
@@ -642,18 +643,18 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "nexthop_compat_mode",
.data = &init_net.ipv4.sysctl_nexthop_compat_mode,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "ip_default_ttl",
.data = &init_net.ipv4.sysctl_ip_default_ttl,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = &ip_ttl_min,
.extra2 = &ip_ttl_max,
},
@@ -674,16 +675,16 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "ip_no_pmtu_disc",
.data = &init_net.ipv4.sysctl_ip_no_pmtu_disc,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "ip_forward_use_pmtu",
.data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "ip_forward_update_priority",
@@ -697,40 +698,40 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "ip_nonlocal_bind",
.data = &init_net.ipv4.sysctl_ip_nonlocal_bind,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "ip_autobind_reuse",
.data = &init_net.ipv4.sysctl_ip_autobind_reuse,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "fwmark_reflect",
.data = &init_net.ipv4.sysctl_fwmark_reflect,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_fwmark_accept",
.data = &init_net.ipv4.sysctl_tcp_fwmark_accept,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
#ifdef CONFIG_NET_L3_MASTER_DEV
{
.procname = "tcp_l3mdev_accept",
.data = &init_net.ipv4.sysctl_tcp_l3mdev_accept,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
@@ -738,9 +739,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_mtu_probing",
.data = &init_net.ipv4.sysctl_tcp_mtu_probing,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_base_mss",
@@ -842,9 +843,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_keepalive_probes",
.data = &init_net.ipv4.sysctl_tcp_keepalive_probes,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_keepalive_intvl",
@@ -856,26 +857,26 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_syn_retries",
.data = &init_net.ipv4.sysctl_tcp_syn_retries,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = &tcp_syn_retries_min,
.extra2 = &tcp_syn_retries_max
},
{
.procname = "tcp_synack_retries",
.data = &init_net.ipv4.sysctl_tcp_synack_retries,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
#ifdef CONFIG_SYN_COOKIES
{
.procname = "tcp_syncookies",
.data = &init_net.ipv4.sysctl_tcp_syncookies,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
#endif
{
@@ -888,24 +889,24 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_retries1",
.data = &init_net.ipv4.sysctl_tcp_retries1,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra2 = &tcp_retr1_max
},
{
.procname = "tcp_retries2",
.data = &init_net.ipv4.sysctl_tcp_retries2,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_orphan_retries",
.data = &init_net.ipv4.sysctl_tcp_orphan_retries,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_fin_timeout",
@@ -924,9 +925,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_tw_reuse",
.data = &init_net.ipv4.sysctl_tcp_tw_reuse,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = &two,
},
@@ -1012,88 +1013,88 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_sack",
.data = &init_net.ipv4.sysctl_tcp_sack,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_window_scaling",
.data = &init_net.ipv4.sysctl_tcp_window_scaling,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_timestamps",
.data = &init_net.ipv4.sysctl_tcp_timestamps,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_early_retrans",
.data = &init_net.ipv4.sysctl_tcp_early_retrans,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = &four,
},
{
.procname = "tcp_recovery",
.data = &init_net.ipv4.sysctl_tcp_recovery,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_thin_linear_timeouts",
.data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_slow_start_after_idle",
.data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_retrans_collapse",
.data = &init_net.ipv4.sysctl_tcp_retrans_collapse,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_stdurg",
.data = &init_net.ipv4.sysctl_tcp_stdurg,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_rfc1337",
.data = &init_net.ipv4.sysctl_tcp_rfc1337,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_abort_on_overflow",
.data = &init_net.ipv4.sysctl_tcp_abort_on_overflow,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_fack",
.data = &init_net.ipv4.sysctl_tcp_fack,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_max_reordering",
@@ -1105,16 +1106,18 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_dsack",
.data = &init_net.ipv4.sysctl_tcp_dsack,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_app_win",
.data = &init_net.ipv4.sysctl_tcp_app_win,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = &tcp_app_win_max,
},
{
.procname = "tcp_adv_win_scale",
@@ -1128,46 +1131,46 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_frto",
.data = &init_net.ipv4.sysctl_tcp_frto,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_no_metrics_save",
.data = &init_net.ipv4.sysctl_tcp_nometrics_save,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_no_ssthresh_metrics_save",
.data = &init_net.ipv4.sysctl_tcp_no_ssthresh_metrics_save,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "tcp_moderate_rcvbuf",
.data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_tso_win_divisor",
.data = &init_net.ipv4.sysctl_tcp_tso_win_divisor,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_workaround_signed_windows",
.data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dou8vec_minmax,
},
{
.procname = "tcp_limit_output_bytes",
@@ -1186,9 +1189,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_min_tso_segs",
.data = &init_net.ipv4.sysctl_tcp_min_tso_segs,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ONE,
.extra2 = &gso_max_segs,
},
@@ -1204,9 +1207,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_autocorking",
.data = &init_net.ipv4.sysctl_tcp_autocorking,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
@@ -1277,9 +1280,9 @@ static struct ctl_table ipv4_net_table[] = {
{
.procname = "tcp_reflect_tos",
.data = &init_net.ipv4.sysctl_tcp_reflect_tos,
- .maxlen = sizeof(int),
+ .maxlen = sizeof(u8),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dou8vec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index e427f5040a08..c62e44224bf8 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1925,8 +1925,13 @@ struct sk_buff *__ip6_make_skb(struct sock *sk,
IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
if (proto == IPPROTO_ICMPV6) {
struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
+ u8 icmp6_type;
- ICMP6MSGOUT_INC_STATS(net, idev, icmp6_hdr(skb)->icmp6_type);
+ if (sk->sk_socket->type == SOCK_RAW && !inet_sk(sk)->hdrincl)
+ icmp6_type = fl6->fl6_icmp_type;
+ else
+ icmp6_type = icmp6_hdr(skb)->icmp6_type;
+ ICMP6MSGOUT_INC_STATS(net, idev, icmp6_type);
ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1805cc5f7418..20cc08210c70 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1340,9 +1340,11 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
msg->msg_name = &sin;
msg->msg_namelen = sizeof(sin);
do_udp_sendmsg:
- if (__ipv6_only_sock(sk))
- return -ENETUNREACH;
- return udp_sendmsg(sk, msg, len);
+ err = __ipv6_only_sock(sk) ?
+ -ENETUNREACH : udp_sendmsg(sk, msg, len);
+ msg->msg_name = sin6;
+ msg->msg_namelen = addr_len;
+ return err;
}
}
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index d572478c4d68..2e84360990f0 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1040,7 +1040,8 @@ static int __must_check __sta_info_destroy_part1(struct sta_info *sta)
list_del_rcu(&sta->list);
sta->removed = true;
- drv_sta_pre_rcu_remove(local, sta->sdata, sta);
+ if (sta->uploaded)
+ drv_sta_pre_rcu_remove(local, sta->sdata, sta);
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
rcu_access_pointer(sdata->u.vlan.sta) == sta)
diff --git a/net/qrtr/Makefile b/net/qrtr/Makefile
index 1b1411d158a7..8e0605f88a73 100644
--- a/net/qrtr/Makefile
+++ b/net/qrtr/Makefile
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_QRTR) := qrtr.o ns.o
+obj-$(CONFIG_QRTR) += qrtr.o
+qrtr-y := af_qrtr.o ns.o
obj-$(CONFIG_QRTR_SMD) += qrtr-smd.o
qrtr-smd-y := smd.o
diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
new file mode 100644
index 000000000000..71c2295d4a57
--- /dev/null
+++ b/net/qrtr/af_qrtr.c
@@ -0,0 +1,1303 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015, Sony Mobile Communications Inc.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ */
+#include <linux/module.h>
+#include <linux/netlink.h>
+#include <linux/qrtr.h>
+#include <linux/termios.h> /* For TIOCINQ/OUTQ */
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+
+#include <net/sock.h>
+
+#include "qrtr.h"
+
+#define QRTR_PROTO_VER_1 1
+#define QRTR_PROTO_VER_2 3
+
+/* auto-bind range */
+#define QRTR_MIN_EPH_SOCKET 0x4000
+#define QRTR_MAX_EPH_SOCKET 0x7fff
+#define QRTR_EPH_PORT_RANGE \
+ XA_LIMIT(QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET)
+
+/**
+ * struct qrtr_hdr_v1 - (I|R)PCrouter packet header version 1
+ * @version: protocol version
+ * @type: packet type; one of QRTR_TYPE_*
+ * @src_node_id: source node
+ * @src_port_id: source port
+ * @confirm_rx: boolean; whether a resume-tx packet should be send in reply
+ * @size: length of packet, excluding this header
+ * @dst_node_id: destination node
+ * @dst_port_id: destination port
+ */
+struct qrtr_hdr_v1 {
+ __le32 version;
+ __le32 type;
+ __le32 src_node_id;
+ __le32 src_port_id;
+ __le32 confirm_rx;
+ __le32 size;
+ __le32 dst_node_id;
+ __le32 dst_port_id;
+} __packed;
+
+/**
+ * struct qrtr_hdr_v2 - (I|R)PCrouter packet header later versions
+ * @version: protocol version
+ * @type: packet type; one of QRTR_TYPE_*
+ * @flags: bitmask of QRTR_FLAGS_*
+ * @optlen: length of optional header data
+ * @size: length of packet, excluding this header and optlen
+ * @src_node_id: source node
+ * @src_port_id: source port
+ * @dst_node_id: destination node
+ * @dst_port_id: destination port
+ */
+struct qrtr_hdr_v2 {
+ u8 version;
+ u8 type;
+ u8 flags;
+ u8 optlen;
+ __le32 size;
+ __le16 src_node_id;
+ __le16 src_port_id;
+ __le16 dst_node_id;
+ __le16 dst_port_id;
+};
+
+#define QRTR_FLAGS_CONFIRM_RX BIT(0)
+
+struct qrtr_cb {
+ u32 src_node;
+ u32 src_port;
+ u32 dst_node;
+ u32 dst_port;
+
+ u8 type;
+ u8 confirm_rx;
+};
+
+#define QRTR_HDR_MAX_SIZE max_t(size_t, sizeof(struct qrtr_hdr_v1), \
+ sizeof(struct qrtr_hdr_v2))
+
+struct qrtr_sock {
+ /* WARNING: sk must be the first member */
+ struct sock sk;
+ struct sockaddr_qrtr us;
+ struct sockaddr_qrtr peer;
+};
+
+static inline struct qrtr_sock *qrtr_sk(struct sock *sk)
+{
+ BUILD_BUG_ON(offsetof(struct qrtr_sock, sk) != 0);
+ return container_of(sk, struct qrtr_sock, sk);
+}
+
+static unsigned int qrtr_local_nid = 1;
+
+/* for node ids */
+static RADIX_TREE(qrtr_nodes, GFP_ATOMIC);
+static DEFINE_SPINLOCK(qrtr_nodes_lock);
+/* broadcast list */
+static LIST_HEAD(qrtr_all_nodes);
+/* lock for qrtr_all_nodes and node reference */
+static DEFINE_MUTEX(qrtr_node_lock);
+
+/* local port allocation management */
+static DEFINE_XARRAY_ALLOC(qrtr_ports);
+
+/**
+ * struct qrtr_node - endpoint node
+ * @ep_lock: lock for endpoint management and callbacks
+ * @ep: endpoint
+ * @ref: reference count for node
+ * @nid: node id
+ * @qrtr_tx_flow: tree of qrtr_tx_flow, keyed by node << 32 | port
+ * @qrtr_tx_lock: lock for qrtr_tx_flow inserts
+ * @rx_queue: receive queue
+ * @item: list item for broadcast list
+ */
+struct qrtr_node {
+ struct mutex ep_lock;
+ struct qrtr_endpoint *ep;
+ struct kref ref;
+ unsigned int nid;
+
+ struct radix_tree_root qrtr_tx_flow;
+ struct mutex qrtr_tx_lock; /* for qrtr_tx_flow */
+
+ struct sk_buff_head rx_queue;
+ struct list_head item;
+};
+
+/**
+ * struct qrtr_tx_flow - tx flow control
+ * @resume_tx: waiters for a resume tx from the remote
+ * @pending: number of waiting senders
+ * @tx_failed: indicates that a message with confirm_rx flag was lost
+ */
+struct qrtr_tx_flow {
+ struct wait_queue_head resume_tx;
+ int pending;
+ int tx_failed;
+};
+
+#define QRTR_TX_FLOW_HIGH 10
+#define QRTR_TX_FLOW_LOW 5
+
+static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb,
+ int type, struct sockaddr_qrtr *from,
+ struct sockaddr_qrtr *to);
+static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb,
+ int type, struct sockaddr_qrtr *from,
+ struct sockaddr_qrtr *to);
+static struct qrtr_sock *qrtr_port_lookup(int port);
+static void qrtr_port_put(struct qrtr_sock *ipc);
+
+/* Release node resources and free the node.
+ *
+ * Do not call directly, use qrtr_node_release. To be used with
+ * kref_put_mutex. As such, the node mutex is expected to be locked on call.
+ */
+static void __qrtr_node_release(struct kref *kref)
+{
+ struct qrtr_node *node = container_of(kref, struct qrtr_node, ref);
+ struct radix_tree_iter iter;
+ struct qrtr_tx_flow *flow;
+ unsigned long flags;
+ void __rcu **slot;
+
+ spin_lock_irqsave(&qrtr_nodes_lock, flags);
+ if (node->nid != QRTR_EP_NID_AUTO)
+ radix_tree_delete(&qrtr_nodes, node->nid);
+ spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
+
+ list_del(&node->item);
+ mutex_unlock(&qrtr_node_lock);
+
+ skb_queue_purge(&node->rx_queue);
+
+ /* Free tx flow counters */
+ radix_tree_for_each_slot(slot, &node->qrtr_tx_flow, &iter, 0) {
+ flow = *slot;
+ radix_tree_iter_delete(&node->qrtr_tx_flow, &iter, slot);
+ kfree(flow);
+ }
+ kfree(node);
+}
+
+/* Increment reference to node. */
+static struct qrtr_node *qrtr_node_acquire(struct qrtr_node *node)
+{
+ if (node)
+ kref_get(&node->ref);
+ return node;
+}
+
+/* Decrement reference to node and release as necessary. */
+static void qrtr_node_release(struct qrtr_node *node)
+{
+ if (!node)
+ return;
+ kref_put_mutex(&node->ref, __qrtr_node_release, &qrtr_node_lock);
+}
+
+/**
+ * qrtr_tx_resume() - reset flow control counter
+ * @node: qrtr_node that the QRTR_TYPE_RESUME_TX packet arrived on
+ * @skb: resume_tx packet
+ */
+static void qrtr_tx_resume(struct qrtr_node *node, struct sk_buff *skb)
+{
+ struct qrtr_ctrl_pkt *pkt = (struct qrtr_ctrl_pkt *)skb->data;
+ u64 remote_node = le32_to_cpu(pkt->client.node);
+ u32 remote_port = le32_to_cpu(pkt->client.port);
+ struct qrtr_tx_flow *flow;
+ unsigned long key;
+
+ key = remote_node << 32 | remote_port;
+
+ rcu_read_lock();
+ flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
+ rcu_read_unlock();
+ if (flow) {
+ spin_lock(&flow->resume_tx.lock);
+ flow->pending = 0;
+ spin_unlock(&flow->resume_tx.lock);
+ wake_up_interruptible_all(&flow->resume_tx);
+ }
+
+ consume_skb(skb);
+}
+
+/**
+ * qrtr_tx_wait() - flow control for outgoing packets
+ * @node: qrtr_node that the packet is to be send to
+ * @dest_node: node id of the destination
+ * @dest_port: port number of the destination
+ * @type: type of message
+ *
+ * The flow control scheme is based around the low and high "watermarks". When
+ * the low watermark is passed the confirm_rx flag is set on the outgoing
+ * message, which will trigger the remote to send a control message of the type
+ * QRTR_TYPE_RESUME_TX to reset the counter. If the high watermark is hit
+ * further transmision should be paused.
+ *
+ * Return: 1 if confirm_rx should be set, 0 otherwise or errno failure
+ */
+static int qrtr_tx_wait(struct qrtr_node *node, int dest_node, int dest_port,
+ int type)
+{
+ unsigned long key = (u64)dest_node << 32 | dest_port;
+ struct qrtr_tx_flow *flow;
+ int confirm_rx = 0;
+ int ret;
+
+ /* Never set confirm_rx on non-data packets */
+ if (type != QRTR_TYPE_DATA)
+ return 0;
+
+ mutex_lock(&node->qrtr_tx_lock);
+ flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
+ if (!flow) {
+ flow = kzalloc(sizeof(*flow), GFP_KERNEL);
+ if (flow) {
+ init_waitqueue_head(&flow->resume_tx);
+ if (radix_tree_insert(&node->qrtr_tx_flow, key, flow)) {
+ kfree(flow);
+ flow = NULL;
+ }
+ }
+ }
+ mutex_unlock(&node->qrtr_tx_lock);
+
+ /* Set confirm_rx if we where unable to find and allocate a flow */
+ if (!flow)
+ return 1;
+
+ spin_lock_irq(&flow->resume_tx.lock);
+ ret = wait_event_interruptible_locked_irq(flow->resume_tx,
+ flow->pending < QRTR_TX_FLOW_HIGH ||
+ flow->tx_failed ||
+ !node->ep);
+ if (ret < 0) {
+ confirm_rx = ret;
+ } else if (!node->ep) {
+ confirm_rx = -EPIPE;
+ } else if (flow->tx_failed) {
+ flow->tx_failed = 0;
+ confirm_rx = 1;
+ } else {
+ flow->pending++;
+ confirm_rx = flow->pending == QRTR_TX_FLOW_LOW;
+ }
+ spin_unlock_irq(&flow->resume_tx.lock);
+
+ return confirm_rx;
+}
+
+/**
+ * qrtr_tx_flow_failed() - flag that tx of confirm_rx flagged messages failed
+ * @node: qrtr_node that the packet is to be send to
+ * @dest_node: node id of the destination
+ * @dest_port: port number of the destination
+ *
+ * Signal that the transmission of a message with confirm_rx flag failed. The
+ * flow's "pending" counter will keep incrementing towards QRTR_TX_FLOW_HIGH,
+ * at which point transmission would stall forever waiting for the resume TX
+ * message associated with the dropped confirm_rx message.
+ * Work around this by marking the flow as having a failed transmission and
+ * cause the next transmission attempt to be sent with the confirm_rx.
+ */
+static void qrtr_tx_flow_failed(struct qrtr_node *node, int dest_node,
+ int dest_port)
+{
+ unsigned long key = (u64)dest_node << 32 | dest_port;
+ struct qrtr_tx_flow *flow;
+
+ rcu_read_lock();
+ flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
+ rcu_read_unlock();
+ if (flow) {
+ spin_lock_irq(&flow->resume_tx.lock);
+ flow->tx_failed = 1;
+ spin_unlock_irq(&flow->resume_tx.lock);
+ }
+}
+
+/* Pass an outgoing packet socket buffer to the endpoint driver. */
+static int qrtr_node_enqueue(struct qrtr_node *node, struct sk_buff *skb,
+ int type, struct sockaddr_qrtr *from,
+ struct sockaddr_qrtr *to)
+{
+ struct qrtr_hdr_v1 *hdr;
+ size_t len = skb->len;
+ int rc, confirm_rx;
+
+ confirm_rx = qrtr_tx_wait(node, to->sq_node, to->sq_port, type);
+ if (confirm_rx < 0) {
+ kfree_skb(skb);
+ return confirm_rx;
+ }
+
+ hdr = skb_push(skb, sizeof(*hdr));
+ hdr->version = cpu_to_le32(QRTR_PROTO_VER_1);
+ hdr->type = cpu_to_le32(type);
+ hdr->src_node_id = cpu_to_le32(from->sq_node);
+ hdr->src_port_id = cpu_to_le32(from->sq_port);
+ if (to->sq_port == QRTR_PORT_CTRL) {
+ hdr->dst_node_id = cpu_to_le32(node->nid);
+ hdr->dst_port_id = cpu_to_le32(QRTR_PORT_CTRL);
+ } else {
+ hdr->dst_node_id = cpu_to_le32(to->sq_node);
+ hdr->dst_port_id = cpu_to_le32(to->sq_port);
+ }
+
+ hdr->size = cpu_to_le32(len);
+ hdr->confirm_rx = !!confirm_rx;
+
+ rc = skb_put_padto(skb, ALIGN(len, 4) + sizeof(*hdr));
+
+ if (!rc) {
+ mutex_lock(&node->ep_lock);
+ rc = -ENODEV;
+ if (node->ep)
+ rc = node->ep->xmit(node->ep, skb);
+ else
+ kfree_skb(skb);
+ mutex_unlock(&node->ep_lock);
+ }
+ /* Need to ensure that a subsequent message carries the otherwise lost
+ * confirm_rx flag if we dropped this one */
+ if (rc && confirm_rx)
+ qrtr_tx_flow_failed(node, to->sq_node, to->sq_port);
+
+ return rc;
+}
+
+/* Lookup node by id.
+ *
+ * callers must release with qrtr_node_release()
+ */
+static struct qrtr_node *qrtr_node_lookup(unsigned int nid)
+{
+ struct qrtr_node *node;
+ unsigned long flags;
+
+ mutex_lock(&qrtr_node_lock);
+ spin_lock_irqsave(&qrtr_nodes_lock, flags);
+ node = radix_tree_lookup(&qrtr_nodes, nid);
+ node = qrtr_node_acquire(node);
+ spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
+ mutex_unlock(&qrtr_node_lock);
+
+ return node;
+}
+
+/* Assign node id to node.
+ *
+ * This is mostly useful for automatic node id assignment, based on
+ * the source id in the incoming packet.
+ */
+static void qrtr_node_assign(struct qrtr_node *node, unsigned int nid)
+{
+ unsigned long flags;
+
+ if (node->nid != QRTR_EP_NID_AUTO || nid == QRTR_EP_NID_AUTO)
+ return;
+
+ spin_lock_irqsave(&qrtr_nodes_lock, flags);
+ radix_tree_insert(&qrtr_nodes, nid, node);
+ node->nid = nid;
+ spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
+}
+
+/**
+ * qrtr_endpoint_post() - post incoming data
+ * @ep: endpoint handle
+ * @data: data pointer
+ * @len: size of data in bytes
+ *
+ * Return: 0 on success; negative error code on failure
+ */
+int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
+{
+ struct qrtr_node *node = ep->node;
+ const struct qrtr_hdr_v1 *v1;
+ const struct qrtr_hdr_v2 *v2;
+ struct qrtr_sock *ipc;
+ struct sk_buff *skb;
+ struct qrtr_cb *cb;
+ size_t size;
+ unsigned int ver;
+ size_t hdrlen;
+
+ if (len == 0 || len & 3)
+ return -EINVAL;
+
+ skb = __netdev_alloc_skb(NULL, len, GFP_ATOMIC | __GFP_NOWARN);
+ if (!skb)
+ return -ENOMEM;
+
+ cb = (struct qrtr_cb *)skb->cb;
+
+ /* Version field in v1 is little endian, so this works for both cases */
+ ver = *(u8*)data;
+
+ switch (ver) {
+ case QRTR_PROTO_VER_1:
+ if (len < sizeof(*v1))
+ goto err;
+ v1 = data;
+ hdrlen = sizeof(*v1);
+
+ cb->type = le32_to_cpu(v1->type);
+ cb->src_node = le32_to_cpu(v1->src_node_id);
+ cb->src_port = le32_to_cpu(v1->src_port_id);
+ cb->confirm_rx = !!v1->confirm_rx;
+ cb->dst_node = le32_to_cpu(v1->dst_node_id);
+ cb->dst_port = le32_to_cpu(v1->dst_port_id);
+
+ size = le32_to_cpu(v1->size);
+ break;
+ case QRTR_PROTO_VER_2:
+ if (len < sizeof(*v2))
+ goto err;
+ v2 = data;
+ hdrlen = sizeof(*v2) + v2->optlen;
+
+ cb->type = v2->type;
+ cb->confirm_rx = !!(v2->flags & QRTR_FLAGS_CONFIRM_RX);
+ cb->src_node = le16_to_cpu(v2->src_node_id);
+ cb->src_port = le16_to_cpu(v2->src_port_id);
+ cb->dst_node = le16_to_cpu(v2->dst_node_id);
+ cb->dst_port = le16_to_cpu(v2->dst_port_id);
+
+ if (cb->src_port == (u16)QRTR_PORT_CTRL)
+ cb->src_port = QRTR_PORT_CTRL;
+ if (cb->dst_port == (u16)QRTR_PORT_CTRL)
+ cb->dst_port = QRTR_PORT_CTRL;
+
+ size = le32_to_cpu(v2->size);
+ break;
+ default:
+ pr_err("qrtr: Invalid version %d\n", ver);
+ goto err;
+ }
+
+ if (!size || len != ALIGN(size, 4) + hdrlen)
+ goto err;
+
+ if ((cb->type == QRTR_TYPE_NEW_SERVER ||
+ cb->type == QRTR_TYPE_RESUME_TX) &&
+ size < sizeof(struct qrtr_ctrl_pkt))
+ goto err;
+
+ if (cb->dst_port != QRTR_PORT_CTRL && cb->type != QRTR_TYPE_DATA &&
+ cb->type != QRTR_TYPE_RESUME_TX)
+ goto err;
+
+ skb_put_data(skb, data + hdrlen, size);
+
+ qrtr_node_assign(node, cb->src_node);
+
+ if (cb->type == QRTR_TYPE_NEW_SERVER) {
+ /* Remote node endpoint can bridge other distant nodes */
+ const struct qrtr_ctrl_pkt *pkt;
+
+ pkt = data + hdrlen;
+ qrtr_node_assign(node, le32_to_cpu(pkt->server.node));
+ }
+
+ if (cb->type == QRTR_TYPE_RESUME_TX) {
+ qrtr_tx_resume(node, skb);
+ } else {
+ ipc = qrtr_port_lookup(cb->dst_port);
+ if (!ipc)
+ goto err;
+
+ if (sock_queue_rcv_skb(&ipc->sk, skb)) {
+ qrtr_port_put(ipc);
+ goto err;
+ }
+
+ qrtr_port_put(ipc);
+ }
+
+ return 0;
+
+err:
+ kfree_skb(skb);
+ return -EINVAL;
+
+}
+EXPORT_SYMBOL_GPL(qrtr_endpoint_post);
+
+/**
+ * qrtr_alloc_ctrl_packet() - allocate control packet skb
+ * @pkt: reference to qrtr_ctrl_pkt pointer
+ *
+ * Returns newly allocated sk_buff, or NULL on failure
+ *
+ * This function allocates a sk_buff large enough to carry a qrtr_ctrl_pkt and
+ * on success returns a reference to the control packet in @pkt.
+ */
+static struct sk_buff *qrtr_alloc_ctrl_packet(struct qrtr_ctrl_pkt **pkt)
+{
+ const int pkt_len = sizeof(struct qrtr_ctrl_pkt);
+ struct sk_buff *skb;
+
+ skb = alloc_skb(QRTR_HDR_MAX_SIZE + pkt_len, GFP_KERNEL);
+ if (!skb)
+ return NULL;
+
+ skb_reserve(skb, QRTR_HDR_MAX_SIZE);
+ *pkt = skb_put_zero(skb, pkt_len);
+
+ return skb;
+}
+
+/**
+ * qrtr_endpoint_register() - register a new endpoint
+ * @ep: endpoint to register
+ * @nid: desired node id; may be QRTR_EP_NID_AUTO for auto-assignment
+ * Return: 0 on success; negative error code on failure
+ *
+ * The specified endpoint must have the xmit function pointer set on call.
+ */
+int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int nid)
+{
+ struct qrtr_node *node;
+
+ if (!ep || !ep->xmit)
+ return -EINVAL;
+
+ node = kzalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ return -ENOMEM;
+
+ kref_init(&node->ref);
+ mutex_init(&node->ep_lock);
+ skb_queue_head_init(&node->rx_queue);
+ node->nid = QRTR_EP_NID_AUTO;
+ node->ep = ep;
+
+ INIT_RADIX_TREE(&node->qrtr_tx_flow, GFP_KERNEL);
+ mutex_init(&node->qrtr_tx_lock);
+
+ qrtr_node_assign(node, nid);
+
+ mutex_lock(&qrtr_node_lock);
+ list_add(&node->item, &qrtr_all_nodes);
+ mutex_unlock(&qrtr_node_lock);
+ ep->node = node;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(qrtr_endpoint_register);
+
+/**
+ * qrtr_endpoint_unregister - unregister endpoint
+ * @ep: endpoint to unregister
+ */
+void qrtr_endpoint_unregister(struct qrtr_endpoint *ep)
+{
+ struct qrtr_node *node = ep->node;
+ struct sockaddr_qrtr src = {AF_QIPCRTR, node->nid, QRTR_PORT_CTRL};
+ struct sockaddr_qrtr dst = {AF_QIPCRTR, qrtr_local_nid, QRTR_PORT_CTRL};
+ struct radix_tree_iter iter;
+ struct qrtr_ctrl_pkt *pkt;
+ struct qrtr_tx_flow *flow;
+ struct sk_buff *skb;
+ void __rcu **slot;
+
+ mutex_lock(&node->ep_lock);
+ node->ep = NULL;
+ mutex_unlock(&node->ep_lock);
+
+ /* Notify the local controller about the event */
+ skb = qrtr_alloc_ctrl_packet(&pkt);
+ if (skb) {
+ pkt->cmd = cpu_to_le32(QRTR_TYPE_BYE);
+ qrtr_local_enqueue(NULL, skb, QRTR_TYPE_BYE, &src, &dst);
+ }
+
+ /* Wake up any transmitters waiting for resume-tx from the node */
+ mutex_lock(&node->qrtr_tx_lock);
+ radix_tree_for_each_slot(slot, &node->qrtr_tx_flow, &iter, 0) {
+ flow = *slot;
+ wake_up_interruptible_all(&flow->resume_tx);
+ }
+ mutex_unlock(&node->qrtr_tx_lock);
+
+ qrtr_node_release(node);
+ ep->node = NULL;
+}
+EXPORT_SYMBOL_GPL(qrtr_endpoint_unregister);
+
+/* Lookup socket by port.
+ *
+ * Callers must release with qrtr_port_put()
+ */
+static struct qrtr_sock *qrtr_port_lookup(int port)
+{
+ struct qrtr_sock *ipc;
+
+ if (port == QRTR_PORT_CTRL)
+ port = 0;
+
+ rcu_read_lock();
+ ipc = xa_load(&qrtr_ports, port);
+ if (ipc)
+ sock_hold(&ipc->sk);
+ rcu_read_unlock();
+
+ return ipc;
+}
+
+/* Release acquired socket. */
+static void qrtr_port_put(struct qrtr_sock *ipc)
+{
+ sock_put(&ipc->sk);
+}
+
+/* Remove port assignment. */
+static void qrtr_port_remove(struct qrtr_sock *ipc)
+{
+ struct qrtr_ctrl_pkt *pkt;
+ struct sk_buff *skb;
+ int port = ipc->us.sq_port;
+ struct sockaddr_qrtr to;
+
+ to.sq_family = AF_QIPCRTR;
+ to.sq_node = QRTR_NODE_BCAST;
+ to.sq_port = QRTR_PORT_CTRL;
+
+ skb = qrtr_alloc_ctrl_packet(&pkt);
+ if (skb) {
+ pkt->cmd = cpu_to_le32(QRTR_TYPE_DEL_CLIENT);
+ pkt->client.node = cpu_to_le32(ipc->us.sq_node);
+ pkt->client.port = cpu_to_le32(ipc->us.sq_port);
+
+ skb_set_owner_w(skb, &ipc->sk);
+ qrtr_bcast_enqueue(NULL, skb, QRTR_TYPE_DEL_CLIENT, &ipc->us,
+ &to);
+ }
+
+ if (port == QRTR_PORT_CTRL)
+ port = 0;
+
+ __sock_put(&ipc->sk);
+
+ xa_erase(&qrtr_ports, port);
+
+ /* Ensure that if qrtr_port_lookup() did enter the RCU read section we
+ * wait for it to up increment the refcount */
+ synchronize_rcu();
+}
+
+/* Assign port number to socket.
+ *
+ * Specify port in the integer pointed to by port, and it will be adjusted
+ * on return as necesssary.
+ *
+ * Port may be:
+ * 0: Assign ephemeral port in [QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET]
+ * <QRTR_MIN_EPH_SOCKET: Specified; requires CAP_NET_ADMIN
+ * >QRTR_MIN_EPH_SOCKET: Specified; available to all
+ */
+static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
+{
+ int rc;
+
+ if (!*port) {
+ rc = xa_alloc(&qrtr_ports, port, ipc, QRTR_EPH_PORT_RANGE,
+ GFP_KERNEL);
+ } else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
+ rc = -EACCES;
+ } else if (*port == QRTR_PORT_CTRL) {
+ rc = xa_insert(&qrtr_ports, 0, ipc, GFP_KERNEL);
+ } else {
+ rc = xa_insert(&qrtr_ports, *port, ipc, GFP_KERNEL);
+ }
+
+ if (rc == -EBUSY)
+ return -EADDRINUSE;
+ else if (rc < 0)
+ return rc;
+
+ sock_hold(&ipc->sk);
+
+ return 0;
+}
+
+/* Reset all non-control ports */
+static void qrtr_reset_ports(void)
+{
+ struct qrtr_sock *ipc;
+ unsigned long index;
+
+ rcu_read_lock();
+ xa_for_each_start(&qrtr_ports, index, ipc, 1) {
+ sock_hold(&ipc->sk);
+ ipc->sk.sk_err = ENETRESET;
+ ipc->sk.sk_error_report(&ipc->sk);
+ sock_put(&ipc->sk);
+ }
+ rcu_read_unlock();
+}
+
+/* Bind socket to address.
+ *
+ * Socket should be locked upon call.
+ */
+static int __qrtr_bind(struct socket *sock,
+ const struct sockaddr_qrtr *addr, int zapped)
+{
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sock *sk = sock->sk;
+ int port;
+ int rc;
+
+ /* rebinding ok */
+ if (!zapped && addr->sq_port == ipc->us.sq_port)
+ return 0;
+
+ port = addr->sq_port;
+ rc = qrtr_port_assign(ipc, &port);
+ if (rc)
+ return rc;
+
+ /* unbind previous, if any */
+ if (!zapped)
+ qrtr_port_remove(ipc);
+ ipc->us.sq_port = port;
+
+ sock_reset_flag(sk, SOCK_ZAPPED);
+
+ /* Notify all open ports about the new controller */
+ if (port == QRTR_PORT_CTRL)
+ qrtr_reset_ports();
+
+ return 0;
+}
+
+/* Auto bind to an ephemeral port. */
+static int qrtr_autobind(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ struct sockaddr_qrtr addr;
+
+ if (!sock_flag(sk, SOCK_ZAPPED))
+ return 0;
+
+ addr.sq_family = AF_QIPCRTR;
+ addr.sq_node = qrtr_local_nid;
+ addr.sq_port = 0;
+
+ return __qrtr_bind(sock, &addr, 1);
+}
+
+/* Bind socket to specified sockaddr. */
+static int qrtr_bind(struct socket *sock, struct sockaddr *saddr, int len)
+{
+ DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sock *sk = sock->sk;
+ int rc;
+
+ if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
+ return -EINVAL;
+
+ if (addr->sq_node != ipc->us.sq_node)
+ return -EINVAL;
+
+ lock_sock(sk);
+ rc = __qrtr_bind(sock, addr, sock_flag(sk, SOCK_ZAPPED));
+ release_sock(sk);
+
+ return rc;
+}
+
+/* Queue packet to local peer socket. */
+static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb,
+ int type, struct sockaddr_qrtr *from,
+ struct sockaddr_qrtr *to)
+{
+ struct qrtr_sock *ipc;
+ struct qrtr_cb *cb;
+
+ ipc = qrtr_port_lookup(to->sq_port);
+ if (!ipc || &ipc->sk == skb->sk) { /* do not send to self */
+ if (ipc)
+ qrtr_port_put(ipc);
+ kfree_skb(skb);
+ return -ENODEV;
+ }
+
+ cb = (struct qrtr_cb *)skb->cb;
+ cb->src_node = from->sq_node;
+ cb->src_port = from->sq_port;
+
+ if (sock_queue_rcv_skb(&ipc->sk, skb)) {
+ qrtr_port_put(ipc);
+ kfree_skb(skb);
+ return -ENOSPC;
+ }
+
+ qrtr_port_put(ipc);
+
+ return 0;
+}
+
+/* Queue packet for broadcast. */
+static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb,
+ int type, struct sockaddr_qrtr *from,
+ struct sockaddr_qrtr *to)
+{
+ struct sk_buff *skbn;
+
+ mutex_lock(&qrtr_node_lock);
+ list_for_each_entry(node, &qrtr_all_nodes, item) {
+ skbn = skb_clone(skb, GFP_KERNEL);
+ if (!skbn)
+ break;
+ skb_set_owner_w(skbn, skb->sk);
+ qrtr_node_enqueue(node, skbn, type, from, to);
+ }
+ mutex_unlock(&qrtr_node_lock);
+
+ qrtr_local_enqueue(NULL, skb, type, from, to);
+
+ return 0;
+}
+
+static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
+{
+ DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
+ int (*enqueue_fn)(struct qrtr_node *, struct sk_buff *, int,
+ struct sockaddr_qrtr *, struct sockaddr_qrtr *);
+ __le32 qrtr_type = cpu_to_le32(QRTR_TYPE_DATA);
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sock *sk = sock->sk;
+ struct qrtr_node *node;
+ struct sk_buff *skb;
+ size_t plen;
+ u32 type;
+ int rc;
+
+ if (msg->msg_flags & ~(MSG_DONTWAIT))
+ return -EINVAL;
+
+ if (len > 65535)
+ return -EMSGSIZE;
+
+ lock_sock(sk);
+
+ if (addr) {
+ if (msg->msg_namelen < sizeof(*addr)) {
+ release_sock(sk);
+ return -EINVAL;
+ }
+
+ if (addr->sq_family != AF_QIPCRTR) {
+ release_sock(sk);
+ return -EINVAL;
+ }
+
+ rc = qrtr_autobind(sock);
+ if (rc) {
+ release_sock(sk);
+ return rc;
+ }
+ } else if (sk->sk_state == TCP_ESTABLISHED) {
+ addr = &ipc->peer;
+ } else {
+ release_sock(sk);
+ return -ENOTCONN;
+ }
+
+ node = NULL;
+ if (addr->sq_node == QRTR_NODE_BCAST) {
+ if (addr->sq_port != QRTR_PORT_CTRL &&
+ qrtr_local_nid != QRTR_NODE_BCAST) {
+ release_sock(sk);
+ return -ENOTCONN;
+ }
+ enqueue_fn = qrtr_bcast_enqueue;
+ } else if (addr->sq_node == ipc->us.sq_node) {
+ enqueue_fn = qrtr_local_enqueue;
+ } else {
+ node = qrtr_node_lookup(addr->sq_node);
+ if (!node) {
+ release_sock(sk);
+ return -ECONNRESET;
+ }
+ enqueue_fn = qrtr_node_enqueue;
+ }
+
+ plen = (len + 3) & ~3;
+ skb = sock_alloc_send_skb(sk, plen + QRTR_HDR_MAX_SIZE,
+ msg->msg_flags & MSG_DONTWAIT, &rc);
+ if (!skb) {
+ rc = -ENOMEM;
+ goto out_node;
+ }
+
+ skb_reserve(skb, QRTR_HDR_MAX_SIZE);
+
+ rc = memcpy_from_msg(skb_put(skb, len), msg, len);
+ if (rc) {
+ kfree_skb(skb);
+ goto out_node;
+ }
+
+ if (ipc->us.sq_port == QRTR_PORT_CTRL) {
+ if (len < 4) {
+ rc = -EINVAL;
+ kfree_skb(skb);
+ goto out_node;
+ }
+
+ /* control messages already require the type as 'command' */
+ skb_copy_bits(skb, 0, &qrtr_type, 4);
+ }
+
+ type = le32_to_cpu(qrtr_type);
+ rc = enqueue_fn(node, skb, type, &ipc->us, addr);
+ if (rc >= 0)
+ rc = len;
+
+out_node:
+ qrtr_node_release(node);
+ release_sock(sk);
+
+ return rc;
+}
+
+static int qrtr_send_resume_tx(struct qrtr_cb *cb)
+{
+ struct sockaddr_qrtr remote = { AF_QIPCRTR, cb->src_node, cb->src_port };
+ struct sockaddr_qrtr local = { AF_QIPCRTR, cb->dst_node, cb->dst_port };
+ struct qrtr_ctrl_pkt *pkt;
+ struct qrtr_node *node;
+ struct sk_buff *skb;
+ int ret;
+
+ node = qrtr_node_lookup(remote.sq_node);
+ if (!node)
+ return -EINVAL;
+
+ skb = qrtr_alloc_ctrl_packet(&pkt);
+ if (!skb)
+ return -ENOMEM;
+
+ pkt->cmd = cpu_to_le32(QRTR_TYPE_RESUME_TX);
+ pkt->client.node = cpu_to_le32(cb->dst_node);
+ pkt->client.port = cpu_to_le32(cb->dst_port);
+
+ ret = qrtr_node_enqueue(node, skb, QRTR_TYPE_RESUME_TX, &local, &remote);
+
+ qrtr_node_release(node);
+
+ return ret;
+}
+
+static int qrtr_recvmsg(struct socket *sock, struct msghdr *msg,
+ size_t size, int flags)
+{
+ DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
+ struct sock *sk = sock->sk;
+ struct sk_buff *skb;
+ struct qrtr_cb *cb;
+ int copied, rc;
+
+ lock_sock(sk);
+
+ if (sock_flag(sk, SOCK_ZAPPED)) {
+ release_sock(sk);
+ return -EADDRNOTAVAIL;
+ }
+
+ skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
+ flags & MSG_DONTWAIT, &rc);
+ if (!skb) {
+ release_sock(sk);
+ return rc;
+ }
+ cb = (struct qrtr_cb *)skb->cb;
+
+ copied = skb->len;
+ if (copied > size) {
+ copied = size;
+ msg->msg_flags |= MSG_TRUNC;
+ }
+
+ rc = skb_copy_datagram_msg(skb, 0, msg, copied);
+ if (rc < 0)
+ goto out;
+ rc = copied;
+
+ if (addr) {
+ /* There is an anonymous 2-byte hole after sq_family,
+ * make sure to clear it.
+ */
+ memset(addr, 0, sizeof(*addr));
+
+ addr->sq_family = AF_QIPCRTR;
+ addr->sq_node = cb->src_node;
+ addr->sq_port = cb->src_port;
+ msg->msg_namelen = sizeof(*addr);
+ }
+
+out:
+ if (cb->confirm_rx)
+ qrtr_send_resume_tx(cb);
+
+ skb_free_datagram(sk, skb);
+ release_sock(sk);
+
+ return rc;
+}
+
+static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
+ int len, int flags)
+{
+ DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sock *sk = sock->sk;
+ int rc;
+
+ if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ sk->sk_state = TCP_CLOSE;
+ sock->state = SS_UNCONNECTED;
+
+ rc = qrtr_autobind(sock);
+ if (rc) {
+ release_sock(sk);
+ return rc;
+ }
+
+ ipc->peer = *addr;
+ sock->state = SS_CONNECTED;
+ sk->sk_state = TCP_ESTABLISHED;
+
+ release_sock(sk);
+
+ return 0;
+}
+
+static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
+ int peer)
+{
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sockaddr_qrtr qaddr;
+ struct sock *sk = sock->sk;
+
+ lock_sock(sk);
+ if (peer) {
+ if (sk->sk_state != TCP_ESTABLISHED) {
+ release_sock(sk);
+ return -ENOTCONN;
+ }
+
+ qaddr = ipc->peer;
+ } else {
+ qaddr = ipc->us;
+ }
+ release_sock(sk);
+
+ qaddr.sq_family = AF_QIPCRTR;
+
+ memcpy(saddr, &qaddr, sizeof(qaddr));
+
+ return sizeof(qaddr);
+}
+
+static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ struct qrtr_sock *ipc = qrtr_sk(sock->sk);
+ struct sock *sk = sock->sk;
+ struct sockaddr_qrtr *sq;
+ struct sk_buff *skb;
+ struct ifreq ifr;
+ long len = 0;
+ int rc = 0;
+
+ lock_sock(sk);
+
+ switch (cmd) {
+ case TIOCOUTQ:
+ len = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
+ if (len < 0)
+ len = 0;
+ rc = put_user(len, (int __user *)argp);
+ break;
+ case TIOCINQ:
+ skb = skb_peek(&sk->sk_receive_queue);
+ if (skb)
+ len = skb->len;
+ rc = put_user(len, (int __user *)argp);
+ break;
+ case SIOCGIFADDR:
+ if (copy_from_user(&ifr, argp, sizeof(ifr))) {
+ rc = -EFAULT;
+ break;
+ }
+
+ sq = (struct sockaddr_qrtr *)&ifr.ifr_addr;
+ *sq = ipc->us;
+ if (copy_to_user(argp, &ifr, sizeof(ifr))) {
+ rc = -EFAULT;
+ break;
+ }
+ break;
+ case SIOCADDRT:
+ case SIOCDELRT:
+ case SIOCSIFADDR:
+ case SIOCGIFDSTADDR:
+ case SIOCSIFDSTADDR:
+ case SIOCGIFBRDADDR:
+ case SIOCSIFBRDADDR:
+ case SIOCGIFNETMASK:
+ case SIOCSIFNETMASK:
+ rc = -EINVAL;
+ break;
+ default:
+ rc = -ENOIOCTLCMD;
+ break;
+ }
+
+ release_sock(sk);
+
+ return rc;
+}
+
+static int qrtr_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ struct qrtr_sock *ipc;
+
+ if (!sk)
+ return 0;
+
+ lock_sock(sk);
+
+ ipc = qrtr_sk(sk);
+ sk->sk_shutdown = SHUTDOWN_MASK;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk->sk_state_change(sk);
+
+ sock_set_flag(sk, SOCK_DEAD);
+ sock_orphan(sk);
+ sock->sk = NULL;
+
+ if (!sock_flag(sk, SOCK_ZAPPED))
+ qrtr_port_remove(ipc);
+
+ skb_queue_purge(&sk->sk_receive_queue);
+
+ release_sock(sk);
+ sock_put(sk);
+
+ return 0;
+}
+
+static const struct proto_ops qrtr_proto_ops = {
+ .owner = THIS_MODULE,
+ .family = AF_QIPCRTR,
+ .bind = qrtr_bind,
+ .connect = qrtr_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .listen = sock_no_listen,
+ .sendmsg = qrtr_sendmsg,
+ .recvmsg = qrtr_recvmsg,
+ .getname = qrtr_getname,
+ .ioctl = qrtr_ioctl,
+ .gettstamp = sock_gettstamp,
+ .poll = datagram_poll,
+ .shutdown = sock_no_shutdown,
+ .release = qrtr_release,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+static struct proto qrtr_proto = {
+ .name = "QIPCRTR",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct qrtr_sock),
+};
+
+static int qrtr_create(struct net *net, struct socket *sock,
+ int protocol, int kern)
+{
+ struct qrtr_sock *ipc;
+ struct sock *sk;
+
+ if (sock->type != SOCK_DGRAM)
+ return -EPROTOTYPE;
+
+ sk = sk_alloc(net, AF_QIPCRTR, GFP_KERNEL, &qrtr_proto, kern);
+ if (!sk)
+ return -ENOMEM;
+
+ sock_set_flag(sk, SOCK_ZAPPED);
+
+ sock_init_data(sock, sk);
+ sock->ops = &qrtr_proto_ops;
+
+ ipc = qrtr_sk(sk);
+ ipc->us.sq_family = AF_QIPCRTR;
+ ipc->us.sq_node = qrtr_local_nid;
+ ipc->us.sq_port = 0;
+
+ return 0;
+}
+
+static const struct net_proto_family qrtr_family = {
+ .owner = THIS_MODULE,
+ .family = AF_QIPCRTR,
+ .create = qrtr_create,
+};
+
+static int __init qrtr_proto_init(void)
+{
+ int rc;
+
+ rc = proto_register(&qrtr_proto, 1);
+ if (rc)
+ return rc;
+
+ rc = sock_register(&qrtr_family);
+ if (rc) {
+ proto_unregister(&qrtr_proto);
+ return rc;
+ }
+
+ qrtr_ns_init();
+
+ return rc;
+}
+postcore_initcall(qrtr_proto_init);
+
+static void __exit qrtr_proto_fini(void)
+{
+ qrtr_ns_remove();
+ sock_unregister(qrtr_family.family);
+ proto_unregister(&qrtr_proto);
+}
+module_exit(qrtr_proto_fini);
+
+MODULE_DESCRIPTION("Qualcomm IPC-router driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_NETPROTO(PF_QIPCRTR);
diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index fe81e0385168..713e9940d88b 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -273,7 +273,7 @@ static struct qrtr_server *server_add(unsigned int service,
return NULL;
}
-static int server_del(struct qrtr_node *node, unsigned int port)
+static int server_del(struct qrtr_node *node, unsigned int port, bool bcast)
{
struct qrtr_lookup *lookup;
struct qrtr_server *srv;
@@ -286,7 +286,7 @@ static int server_del(struct qrtr_node *node, unsigned int port)
radix_tree_delete(&node->servers, port);
/* Broadcast the removal of local servers */
- if (srv->node == qrtr_ns.local_node)
+ if (srv->node == qrtr_ns.local_node && bcast)
service_announce_del(&qrtr_ns.bcast_sq, srv);
/* Announce the service's disappearance to observers */
@@ -372,7 +372,7 @@ static int ctrl_cmd_bye(struct sockaddr_qrtr *from)
}
slot = radix_tree_iter_resume(slot, &iter);
rcu_read_unlock();
- server_del(node, srv->port);
+ server_del(node, srv->port, true);
rcu_read_lock();
}
rcu_read_unlock();
@@ -458,10 +458,13 @@ static int ctrl_cmd_del_client(struct sockaddr_qrtr *from,
kfree(lookup);
}
- /* Remove the server belonging to this port */
+ /* Remove the server belonging to this port but don't broadcast
+ * DEL_SERVER. Neighbours would've already removed the server belonging
+ * to this port due to the DEL_CLIENT broadcast from qrtr_port_remove().
+ */
node = node_get(node_id);
if (node)
- server_del(node, port);
+ server_del(node, port, false);
/* Advertise the removal of this client to all local servers */
local_node = node_get(qrtr_ns.local_node);
@@ -574,7 +577,7 @@ static int ctrl_cmd_del_server(struct sockaddr_qrtr *from,
if (!node)
return -ENOENT;
- return server_del(node, port);
+ return server_del(node, port, true);
}
static int ctrl_cmd_new_lookup(struct sockaddr_qrtr *from,
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
deleted file mode 100644
index 13448ca5aeff..000000000000
--- a/net/qrtr/qrtr.c
+++ /dev/null
@@ -1,1288 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2015, Sony Mobile Communications Inc.
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
- */
-#include <linux/module.h>
-#include <linux/netlink.h>
-#include <linux/qrtr.h>
-#include <linux/termios.h> /* For TIOCINQ/OUTQ */
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-
-#include <net/sock.h>
-
-#include "qrtr.h"
-
-#define QRTR_PROTO_VER_1 1
-#define QRTR_PROTO_VER_2 3
-
-/* auto-bind range */
-#define QRTR_MIN_EPH_SOCKET 0x4000
-#define QRTR_MAX_EPH_SOCKET 0x7fff
-#define QRTR_EPH_PORT_RANGE \
- XA_LIMIT(QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET)
-
-/**
- * struct qrtr_hdr_v1 - (I|R)PCrouter packet header version 1
- * @version: protocol version
- * @type: packet type; one of QRTR_TYPE_*
- * @src_node_id: source node
- * @src_port_id: source port
- * @confirm_rx: boolean; whether a resume-tx packet should be send in reply
- * @size: length of packet, excluding this header
- * @dst_node_id: destination node
- * @dst_port_id: destination port
- */
-struct qrtr_hdr_v1 {
- __le32 version;
- __le32 type;
- __le32 src_node_id;
- __le32 src_port_id;
- __le32 confirm_rx;
- __le32 size;
- __le32 dst_node_id;
- __le32 dst_port_id;
-} __packed;
-
-/**
- * struct qrtr_hdr_v2 - (I|R)PCrouter packet header later versions
- * @version: protocol version
- * @type: packet type; one of QRTR_TYPE_*
- * @flags: bitmask of QRTR_FLAGS_*
- * @optlen: length of optional header data
- * @size: length of packet, excluding this header and optlen
- * @src_node_id: source node
- * @src_port_id: source port
- * @dst_node_id: destination node
- * @dst_port_id: destination port
- */
-struct qrtr_hdr_v2 {
- u8 version;
- u8 type;
- u8 flags;
- u8 optlen;
- __le32 size;
- __le16 src_node_id;
- __le16 src_port_id;
- __le16 dst_node_id;
- __le16 dst_port_id;
-};
-
-#define QRTR_FLAGS_CONFIRM_RX BIT(0)
-
-struct qrtr_cb {
- u32 src_node;
- u32 src_port;
- u32 dst_node;
- u32 dst_port;
-
- u8 type;
- u8 confirm_rx;
-};
-
-#define QRTR_HDR_MAX_SIZE max_t(size_t, sizeof(struct qrtr_hdr_v1), \
- sizeof(struct qrtr_hdr_v2))
-
-struct qrtr_sock {
- /* WARNING: sk must be the first member */
- struct sock sk;
- struct sockaddr_qrtr us;
- struct sockaddr_qrtr peer;
-};
-
-static inline struct qrtr_sock *qrtr_sk(struct sock *sk)
-{
- BUILD_BUG_ON(offsetof(struct qrtr_sock, sk) != 0);
- return container_of(sk, struct qrtr_sock, sk);
-}
-
-static unsigned int qrtr_local_nid = 1;
-
-/* for node ids */
-static RADIX_TREE(qrtr_nodes, GFP_ATOMIC);
-static DEFINE_SPINLOCK(qrtr_nodes_lock);
-/* broadcast list */
-static LIST_HEAD(qrtr_all_nodes);
-/* lock for qrtr_all_nodes and node reference */
-static DEFINE_MUTEX(qrtr_node_lock);
-
-/* local port allocation management */
-static DEFINE_XARRAY_ALLOC(qrtr_ports);
-
-/**
- * struct qrtr_node - endpoint node
- * @ep_lock: lock for endpoint management and callbacks
- * @ep: endpoint
- * @ref: reference count for node
- * @nid: node id
- * @qrtr_tx_flow: tree of qrtr_tx_flow, keyed by node << 32 | port
- * @qrtr_tx_lock: lock for qrtr_tx_flow inserts
- * @rx_queue: receive queue
- * @item: list item for broadcast list
- */
-struct qrtr_node {
- struct mutex ep_lock;
- struct qrtr_endpoint *ep;
- struct kref ref;
- unsigned int nid;
-
- struct radix_tree_root qrtr_tx_flow;
- struct mutex qrtr_tx_lock; /* for qrtr_tx_flow */
-
- struct sk_buff_head rx_queue;
- struct list_head item;
-};
-
-/**
- * struct qrtr_tx_flow - tx flow control
- * @resume_tx: waiters for a resume tx from the remote
- * @pending: number of waiting senders
- * @tx_failed: indicates that a message with confirm_rx flag was lost
- */
-struct qrtr_tx_flow {
- struct wait_queue_head resume_tx;
- int pending;
- int tx_failed;
-};
-
-#define QRTR_TX_FLOW_HIGH 10
-#define QRTR_TX_FLOW_LOW 5
-
-static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb,
- int type, struct sockaddr_qrtr *from,
- struct sockaddr_qrtr *to);
-static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb,
- int type, struct sockaddr_qrtr *from,
- struct sockaddr_qrtr *to);
-static struct qrtr_sock *qrtr_port_lookup(int port);
-static void qrtr_port_put(struct qrtr_sock *ipc);
-
-/* Release node resources and free the node.
- *
- * Do not call directly, use qrtr_node_release. To be used with
- * kref_put_mutex. As such, the node mutex is expected to be locked on call.
- */
-static void __qrtr_node_release(struct kref *kref)
-{
- struct qrtr_node *node = container_of(kref, struct qrtr_node, ref);
- struct radix_tree_iter iter;
- struct qrtr_tx_flow *flow;
- unsigned long flags;
- void __rcu **slot;
-
- spin_lock_irqsave(&qrtr_nodes_lock, flags);
- if (node->nid != QRTR_EP_NID_AUTO)
- radix_tree_delete(&qrtr_nodes, node->nid);
- spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
-
- list_del(&node->item);
- mutex_unlock(&qrtr_node_lock);
-
- skb_queue_purge(&node->rx_queue);
-
- /* Free tx flow counters */
- radix_tree_for_each_slot(slot, &node->qrtr_tx_flow, &iter, 0) {
- flow = *slot;
- radix_tree_iter_delete(&node->qrtr_tx_flow, &iter, slot);
- kfree(flow);
- }
- kfree(node);
-}
-
-/* Increment reference to node. */
-static struct qrtr_node *qrtr_node_acquire(struct qrtr_node *node)
-{
- if (node)
- kref_get(&node->ref);
- return node;
-}
-
-/* Decrement reference to node and release as necessary. */
-static void qrtr_node_release(struct qrtr_node *node)
-{
- if (!node)
- return;
- kref_put_mutex(&node->ref, __qrtr_node_release, &qrtr_node_lock);
-}
-
-/**
- * qrtr_tx_resume() - reset flow control counter
- * @node: qrtr_node that the QRTR_TYPE_RESUME_TX packet arrived on
- * @skb: resume_tx packet
- */
-static void qrtr_tx_resume(struct qrtr_node *node, struct sk_buff *skb)
-{
- struct qrtr_ctrl_pkt *pkt = (struct qrtr_ctrl_pkt *)skb->data;
- u64 remote_node = le32_to_cpu(pkt->client.node);
- u32 remote_port = le32_to_cpu(pkt->client.port);
- struct qrtr_tx_flow *flow;
- unsigned long key;
-
- key = remote_node << 32 | remote_port;
-
- rcu_read_lock();
- flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
- rcu_read_unlock();
- if (flow) {
- spin_lock(&flow->resume_tx.lock);
- flow->pending = 0;
- spin_unlock(&flow->resume_tx.lock);
- wake_up_interruptible_all(&flow->resume_tx);
- }
-
- consume_skb(skb);
-}
-
-/**
- * qrtr_tx_wait() - flow control for outgoing packets
- * @node: qrtr_node that the packet is to be send to
- * @dest_node: node id of the destination
- * @dest_port: port number of the destination
- * @type: type of message
- *
- * The flow control scheme is based around the low and high "watermarks". When
- * the low watermark is passed the confirm_rx flag is set on the outgoing
- * message, which will trigger the remote to send a control message of the type
- * QRTR_TYPE_RESUME_TX to reset the counter. If the high watermark is hit
- * further transmision should be paused.
- *
- * Return: 1 if confirm_rx should be set, 0 otherwise or errno failure
- */
-static int qrtr_tx_wait(struct qrtr_node *node, int dest_node, int dest_port,
- int type)
-{
- unsigned long key = (u64)dest_node << 32 | dest_port;
- struct qrtr_tx_flow *flow;
- int confirm_rx = 0;
- int ret;
-
- /* Never set confirm_rx on non-data packets */
- if (type != QRTR_TYPE_DATA)
- return 0;
-
- mutex_lock(&node->qrtr_tx_lock);
- flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
- if (!flow) {
- flow = kzalloc(sizeof(*flow), GFP_KERNEL);
- if (flow) {
- init_waitqueue_head(&flow->resume_tx);
- if (radix_tree_insert(&node->qrtr_tx_flow, key, flow)) {
- kfree(flow);
- flow = NULL;
- }
- }
- }
- mutex_unlock(&node->qrtr_tx_lock);
-
- /* Set confirm_rx if we where unable to find and allocate a flow */
- if (!flow)
- return 1;
-
- spin_lock_irq(&flow->resume_tx.lock);
- ret = wait_event_interruptible_locked_irq(flow->resume_tx,
- flow->pending < QRTR_TX_FLOW_HIGH ||
- flow->tx_failed ||
- !node->ep);
- if (ret < 0) {
- confirm_rx = ret;
- } else if (!node->ep) {
- confirm_rx = -EPIPE;
- } else if (flow->tx_failed) {
- flow->tx_failed = 0;
- confirm_rx = 1;
- } else {
- flow->pending++;
- confirm_rx = flow->pending == QRTR_TX_FLOW_LOW;
- }
- spin_unlock_irq(&flow->resume_tx.lock);
-
- return confirm_rx;
-}
-
-/**
- * qrtr_tx_flow_failed() - flag that tx of confirm_rx flagged messages failed
- * @node: qrtr_node that the packet is to be send to
- * @dest_node: node id of the destination
- * @dest_port: port number of the destination
- *
- * Signal that the transmission of a message with confirm_rx flag failed. The
- * flow's "pending" counter will keep incrementing towards QRTR_TX_FLOW_HIGH,
- * at which point transmission would stall forever waiting for the resume TX
- * message associated with the dropped confirm_rx message.
- * Work around this by marking the flow as having a failed transmission and
- * cause the next transmission attempt to be sent with the confirm_rx.
- */
-static void qrtr_tx_flow_failed(struct qrtr_node *node, int dest_node,
- int dest_port)
-{
- unsigned long key = (u64)dest_node << 32 | dest_port;
- struct qrtr_tx_flow *flow;
-
- rcu_read_lock();
- flow = radix_tree_lookup(&node->qrtr_tx_flow, key);
- rcu_read_unlock();
- if (flow) {
- spin_lock_irq(&flow->resume_tx.lock);
- flow->tx_failed = 1;
- spin_unlock_irq(&flow->resume_tx.lock);
- }
-}
-
-/* Pass an outgoing packet socket buffer to the endpoint driver. */
-static int qrtr_node_enqueue(struct qrtr_node *node, struct sk_buff *skb,
- int type, struct sockaddr_qrtr *from,
- struct sockaddr_qrtr *to)
-{
- struct qrtr_hdr_v1 *hdr;
- size_t len = skb->len;
- int rc, confirm_rx;
-
- confirm_rx = qrtr_tx_wait(node, to->sq_node, to->sq_port, type);
- if (confirm_rx < 0) {
- kfree_skb(skb);
- return confirm_rx;
- }
-
- hdr = skb_push(skb, sizeof(*hdr));
- hdr->version = cpu_to_le32(QRTR_PROTO_VER_1);
- hdr->type = cpu_to_le32(type);
- hdr->src_node_id = cpu_to_le32(from->sq_node);
- hdr->src_port_id = cpu_to_le32(from->sq_port);
- if (to->sq_port == QRTR_PORT_CTRL) {
- hdr->dst_node_id = cpu_to_le32(node->nid);
- hdr->dst_port_id = cpu_to_le32(QRTR_PORT_CTRL);
- } else {
- hdr->dst_node_id = cpu_to_le32(to->sq_node);
- hdr->dst_port_id = cpu_to_le32(to->sq_port);
- }
-
- hdr->size = cpu_to_le32(len);
- hdr->confirm_rx = !!confirm_rx;
-
- rc = skb_put_padto(skb, ALIGN(len, 4) + sizeof(*hdr));
-
- if (!rc) {
- mutex_lock(&node->ep_lock);
- rc = -ENODEV;
- if (node->ep)
- rc = node->ep->xmit(node->ep, skb);
- else
- kfree_skb(skb);
- mutex_unlock(&node->ep_lock);
- }
- /* Need to ensure that a subsequent message carries the otherwise lost
- * confirm_rx flag if we dropped this one */
- if (rc && confirm_rx)
- qrtr_tx_flow_failed(node, to->sq_node, to->sq_port);
-
- return rc;
-}
-
-/* Lookup node by id.
- *
- * callers must release with qrtr_node_release()
- */
-static struct qrtr_node *qrtr_node_lookup(unsigned int nid)
-{
- struct qrtr_node *node;
- unsigned long flags;
-
- spin_lock_irqsave(&qrtr_nodes_lock, flags);
- node = radix_tree_lookup(&qrtr_nodes, nid);
- node = qrtr_node_acquire(node);
- spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
-
- return node;
-}
-
-/* Assign node id to node.
- *
- * This is mostly useful for automatic node id assignment, based on
- * the source id in the incoming packet.
- */
-static void qrtr_node_assign(struct qrtr_node *node, unsigned int nid)
-{
- unsigned long flags;
-
- if (node->nid != QRTR_EP_NID_AUTO || nid == QRTR_EP_NID_AUTO)
- return;
-
- spin_lock_irqsave(&qrtr_nodes_lock, flags);
- radix_tree_insert(&qrtr_nodes, nid, node);
- node->nid = nid;
- spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
-}
-
-/**
- * qrtr_endpoint_post() - post incoming data
- * @ep: endpoint handle
- * @data: data pointer
- * @len: size of data in bytes
- *
- * Return: 0 on success; negative error code on failure
- */
-int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
-{
- struct qrtr_node *node = ep->node;
- const struct qrtr_hdr_v1 *v1;
- const struct qrtr_hdr_v2 *v2;
- struct qrtr_sock *ipc;
- struct sk_buff *skb;
- struct qrtr_cb *cb;
- size_t size;
- unsigned int ver;
- size_t hdrlen;
-
- if (len == 0 || len & 3)
- return -EINVAL;
-
- skb = __netdev_alloc_skb(NULL, len, GFP_ATOMIC | __GFP_NOWARN);
- if (!skb)
- return -ENOMEM;
-
- cb = (struct qrtr_cb *)skb->cb;
-
- /* Version field in v1 is little endian, so this works for both cases */
- ver = *(u8*)data;
-
- switch (ver) {
- case QRTR_PROTO_VER_1:
- if (len < sizeof(*v1))
- goto err;
- v1 = data;
- hdrlen = sizeof(*v1);
-
- cb->type = le32_to_cpu(v1->type);
- cb->src_node = le32_to_cpu(v1->src_node_id);
- cb->src_port = le32_to_cpu(v1->src_port_id);
- cb->confirm_rx = !!v1->confirm_rx;
- cb->dst_node = le32_to_cpu(v1->dst_node_id);
- cb->dst_port = le32_to_cpu(v1->dst_port_id);
-
- size = le32_to_cpu(v1->size);
- break;
- case QRTR_PROTO_VER_2:
- if (len < sizeof(*v2))
- goto err;
- v2 = data;
- hdrlen = sizeof(*v2) + v2->optlen;
-
- cb->type = v2->type;
- cb->confirm_rx = !!(v2->flags & QRTR_FLAGS_CONFIRM_RX);
- cb->src_node = le16_to_cpu(v2->src_node_id);
- cb->src_port = le16_to_cpu(v2->src_port_id);
- cb->dst_node = le16_to_cpu(v2->dst_node_id);
- cb->dst_port = le16_to_cpu(v2->dst_port_id);
-
- if (cb->src_port == (u16)QRTR_PORT_CTRL)
- cb->src_port = QRTR_PORT_CTRL;
- if (cb->dst_port == (u16)QRTR_PORT_CTRL)
- cb->dst_port = QRTR_PORT_CTRL;
-
- size = le32_to_cpu(v2->size);
- break;
- default:
- pr_err("qrtr: Invalid version %d\n", ver);
- goto err;
- }
-
- if (!size || len != ALIGN(size, 4) + hdrlen)
- goto err;
-
- if (cb->dst_port != QRTR_PORT_CTRL && cb->type != QRTR_TYPE_DATA &&
- cb->type != QRTR_TYPE_RESUME_TX)
- goto err;
-
- skb_put_data(skb, data + hdrlen, size);
-
- qrtr_node_assign(node, cb->src_node);
-
- if (cb->type == QRTR_TYPE_RESUME_TX) {
- qrtr_tx_resume(node, skb);
- } else {
- ipc = qrtr_port_lookup(cb->dst_port);
- if (!ipc)
- goto err;
-
- if (sock_queue_rcv_skb(&ipc->sk, skb)) {
- qrtr_port_put(ipc);
- goto err;
- }
-
- qrtr_port_put(ipc);
- }
-
- return 0;
-
-err:
- kfree_skb(skb);
- return -EINVAL;
-
-}
-EXPORT_SYMBOL_GPL(qrtr_endpoint_post);
-
-/**
- * qrtr_alloc_ctrl_packet() - allocate control packet skb
- * @pkt: reference to qrtr_ctrl_pkt pointer
- *
- * Returns newly allocated sk_buff, or NULL on failure
- *
- * This function allocates a sk_buff large enough to carry a qrtr_ctrl_pkt and
- * on success returns a reference to the control packet in @pkt.
- */
-static struct sk_buff *qrtr_alloc_ctrl_packet(struct qrtr_ctrl_pkt **pkt)
-{
- const int pkt_len = sizeof(struct qrtr_ctrl_pkt);
- struct sk_buff *skb;
-
- skb = alloc_skb(QRTR_HDR_MAX_SIZE + pkt_len, GFP_KERNEL);
- if (!skb)
- return NULL;
-
- skb_reserve(skb, QRTR_HDR_MAX_SIZE);
- *pkt = skb_put_zero(skb, pkt_len);
-
- return skb;
-}
-
-/**
- * qrtr_endpoint_register() - register a new endpoint
- * @ep: endpoint to register
- * @nid: desired node id; may be QRTR_EP_NID_AUTO for auto-assignment
- * Return: 0 on success; negative error code on failure
- *
- * The specified endpoint must have the xmit function pointer set on call.
- */
-int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int nid)
-{
- struct qrtr_node *node;
-
- if (!ep || !ep->xmit)
- return -EINVAL;
-
- node = kzalloc(sizeof(*node), GFP_KERNEL);
- if (!node)
- return -ENOMEM;
-
- kref_init(&node->ref);
- mutex_init(&node->ep_lock);
- skb_queue_head_init(&node->rx_queue);
- node->nid = QRTR_EP_NID_AUTO;
- node->ep = ep;
-
- INIT_RADIX_TREE(&node->qrtr_tx_flow, GFP_KERNEL);
- mutex_init(&node->qrtr_tx_lock);
-
- qrtr_node_assign(node, nid);
-
- mutex_lock(&qrtr_node_lock);
- list_add(&node->item, &qrtr_all_nodes);
- mutex_unlock(&qrtr_node_lock);
- ep->node = node;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(qrtr_endpoint_register);
-
-/**
- * qrtr_endpoint_unregister - unregister endpoint
- * @ep: endpoint to unregister
- */
-void qrtr_endpoint_unregister(struct qrtr_endpoint *ep)
-{
- struct qrtr_node *node = ep->node;
- struct sockaddr_qrtr src = {AF_QIPCRTR, node->nid, QRTR_PORT_CTRL};
- struct sockaddr_qrtr dst = {AF_QIPCRTR, qrtr_local_nid, QRTR_PORT_CTRL};
- struct radix_tree_iter iter;
- struct qrtr_ctrl_pkt *pkt;
- struct qrtr_tx_flow *flow;
- struct sk_buff *skb;
- void __rcu **slot;
-
- mutex_lock(&node->ep_lock);
- node->ep = NULL;
- mutex_unlock(&node->ep_lock);
-
- /* Notify the local controller about the event */
- skb = qrtr_alloc_ctrl_packet(&pkt);
- if (skb) {
- pkt->cmd = cpu_to_le32(QRTR_TYPE_BYE);
- qrtr_local_enqueue(NULL, skb, QRTR_TYPE_BYE, &src, &dst);
- }
-
- /* Wake up any transmitters waiting for resume-tx from the node */
- mutex_lock(&node->qrtr_tx_lock);
- radix_tree_for_each_slot(slot, &node->qrtr_tx_flow, &iter, 0) {
- flow = *slot;
- wake_up_interruptible_all(&flow->resume_tx);
- }
- mutex_unlock(&node->qrtr_tx_lock);
-
- qrtr_node_release(node);
- ep->node = NULL;
-}
-EXPORT_SYMBOL_GPL(qrtr_endpoint_unregister);
-
-/* Lookup socket by port.
- *
- * Callers must release with qrtr_port_put()
- */
-static struct qrtr_sock *qrtr_port_lookup(int port)
-{
- struct qrtr_sock *ipc;
-
- if (port == QRTR_PORT_CTRL)
- port = 0;
-
- rcu_read_lock();
- ipc = xa_load(&qrtr_ports, port);
- if (ipc)
- sock_hold(&ipc->sk);
- rcu_read_unlock();
-
- return ipc;
-}
-
-/* Release acquired socket. */
-static void qrtr_port_put(struct qrtr_sock *ipc)
-{
- sock_put(&ipc->sk);
-}
-
-/* Remove port assignment. */
-static void qrtr_port_remove(struct qrtr_sock *ipc)
-{
- struct qrtr_ctrl_pkt *pkt;
- struct sk_buff *skb;
- int port = ipc->us.sq_port;
- struct sockaddr_qrtr to;
-
- to.sq_family = AF_QIPCRTR;
- to.sq_node = QRTR_NODE_BCAST;
- to.sq_port = QRTR_PORT_CTRL;
-
- skb = qrtr_alloc_ctrl_packet(&pkt);
- if (skb) {
- pkt->cmd = cpu_to_le32(QRTR_TYPE_DEL_CLIENT);
- pkt->client.node = cpu_to_le32(ipc->us.sq_node);
- pkt->client.port = cpu_to_le32(ipc->us.sq_port);
-
- skb_set_owner_w(skb, &ipc->sk);
- qrtr_bcast_enqueue(NULL, skb, QRTR_TYPE_DEL_CLIENT, &ipc->us,
- &to);
- }
-
- if (port == QRTR_PORT_CTRL)
- port = 0;
-
- __sock_put(&ipc->sk);
-
- xa_erase(&qrtr_ports, port);
-
- /* Ensure that if qrtr_port_lookup() did enter the RCU read section we
- * wait for it to up increment the refcount */
- synchronize_rcu();
-}
-
-/* Assign port number to socket.
- *
- * Specify port in the integer pointed to by port, and it will be adjusted
- * on return as necesssary.
- *
- * Port may be:
- * 0: Assign ephemeral port in [QRTR_MIN_EPH_SOCKET, QRTR_MAX_EPH_SOCKET]
- * <QRTR_MIN_EPH_SOCKET: Specified; requires CAP_NET_ADMIN
- * >QRTR_MIN_EPH_SOCKET: Specified; available to all
- */
-static int qrtr_port_assign(struct qrtr_sock *ipc, int *port)
-{
- int rc;
-
- if (!*port) {
- rc = xa_alloc(&qrtr_ports, port, ipc, QRTR_EPH_PORT_RANGE,
- GFP_KERNEL);
- } else if (*port < QRTR_MIN_EPH_SOCKET && !capable(CAP_NET_ADMIN)) {
- rc = -EACCES;
- } else if (*port == QRTR_PORT_CTRL) {
- rc = xa_insert(&qrtr_ports, 0, ipc, GFP_KERNEL);
- } else {
- rc = xa_insert(&qrtr_ports, *port, ipc, GFP_KERNEL);
- }
-
- if (rc == -EBUSY)
- return -EADDRINUSE;
- else if (rc < 0)
- return rc;
-
- sock_hold(&ipc->sk);
-
- return 0;
-}
-
-/* Reset all non-control ports */
-static void qrtr_reset_ports(void)
-{
- struct qrtr_sock *ipc;
- unsigned long index;
-
- rcu_read_lock();
- xa_for_each_start(&qrtr_ports, index, ipc, 1) {
- sock_hold(&ipc->sk);
- ipc->sk.sk_err = ENETRESET;
- ipc->sk.sk_error_report(&ipc->sk);
- sock_put(&ipc->sk);
- }
- rcu_read_unlock();
-}
-
-/* Bind socket to address.
- *
- * Socket should be locked upon call.
- */
-static int __qrtr_bind(struct socket *sock,
- const struct sockaddr_qrtr *addr, int zapped)
-{
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sock *sk = sock->sk;
- int port;
- int rc;
-
- /* rebinding ok */
- if (!zapped && addr->sq_port == ipc->us.sq_port)
- return 0;
-
- port = addr->sq_port;
- rc = qrtr_port_assign(ipc, &port);
- if (rc)
- return rc;
-
- /* unbind previous, if any */
- if (!zapped)
- qrtr_port_remove(ipc);
- ipc->us.sq_port = port;
-
- sock_reset_flag(sk, SOCK_ZAPPED);
-
- /* Notify all open ports about the new controller */
- if (port == QRTR_PORT_CTRL)
- qrtr_reset_ports();
-
- return 0;
-}
-
-/* Auto bind to an ephemeral port. */
-static int qrtr_autobind(struct socket *sock)
-{
- struct sock *sk = sock->sk;
- struct sockaddr_qrtr addr;
-
- if (!sock_flag(sk, SOCK_ZAPPED))
- return 0;
-
- addr.sq_family = AF_QIPCRTR;
- addr.sq_node = qrtr_local_nid;
- addr.sq_port = 0;
-
- return __qrtr_bind(sock, &addr, 1);
-}
-
-/* Bind socket to specified sockaddr. */
-static int qrtr_bind(struct socket *sock, struct sockaddr *saddr, int len)
-{
- DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sock *sk = sock->sk;
- int rc;
-
- if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
- return -EINVAL;
-
- if (addr->sq_node != ipc->us.sq_node)
- return -EINVAL;
-
- lock_sock(sk);
- rc = __qrtr_bind(sock, addr, sock_flag(sk, SOCK_ZAPPED));
- release_sock(sk);
-
- return rc;
-}
-
-/* Queue packet to local peer socket. */
-static int qrtr_local_enqueue(struct qrtr_node *node, struct sk_buff *skb,
- int type, struct sockaddr_qrtr *from,
- struct sockaddr_qrtr *to)
-{
- struct qrtr_sock *ipc;
- struct qrtr_cb *cb;
-
- ipc = qrtr_port_lookup(to->sq_port);
- if (!ipc || &ipc->sk == skb->sk) { /* do not send to self */
- if (ipc)
- qrtr_port_put(ipc);
- kfree_skb(skb);
- return -ENODEV;
- }
-
- cb = (struct qrtr_cb *)skb->cb;
- cb->src_node = from->sq_node;
- cb->src_port = from->sq_port;
-
- if (sock_queue_rcv_skb(&ipc->sk, skb)) {
- qrtr_port_put(ipc);
- kfree_skb(skb);
- return -ENOSPC;
- }
-
- qrtr_port_put(ipc);
-
- return 0;
-}
-
-/* Queue packet for broadcast. */
-static int qrtr_bcast_enqueue(struct qrtr_node *node, struct sk_buff *skb,
- int type, struct sockaddr_qrtr *from,
- struct sockaddr_qrtr *to)
-{
- struct sk_buff *skbn;
-
- mutex_lock(&qrtr_node_lock);
- list_for_each_entry(node, &qrtr_all_nodes, item) {
- skbn = skb_clone(skb, GFP_KERNEL);
- if (!skbn)
- break;
- skb_set_owner_w(skbn, skb->sk);
- qrtr_node_enqueue(node, skbn, type, from, to);
- }
- mutex_unlock(&qrtr_node_lock);
-
- qrtr_local_enqueue(NULL, skb, type, from, to);
-
- return 0;
-}
-
-static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
-{
- DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
- int (*enqueue_fn)(struct qrtr_node *, struct sk_buff *, int,
- struct sockaddr_qrtr *, struct sockaddr_qrtr *);
- __le32 qrtr_type = cpu_to_le32(QRTR_TYPE_DATA);
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sock *sk = sock->sk;
- struct qrtr_node *node;
- struct sk_buff *skb;
- size_t plen;
- u32 type;
- int rc;
-
- if (msg->msg_flags & ~(MSG_DONTWAIT))
- return -EINVAL;
-
- if (len > 65535)
- return -EMSGSIZE;
-
- lock_sock(sk);
-
- if (addr) {
- if (msg->msg_namelen < sizeof(*addr)) {
- release_sock(sk);
- return -EINVAL;
- }
-
- if (addr->sq_family != AF_QIPCRTR) {
- release_sock(sk);
- return -EINVAL;
- }
-
- rc = qrtr_autobind(sock);
- if (rc) {
- release_sock(sk);
- return rc;
- }
- } else if (sk->sk_state == TCP_ESTABLISHED) {
- addr = &ipc->peer;
- } else {
- release_sock(sk);
- return -ENOTCONN;
- }
-
- node = NULL;
- if (addr->sq_node == QRTR_NODE_BCAST) {
- if (addr->sq_port != QRTR_PORT_CTRL &&
- qrtr_local_nid != QRTR_NODE_BCAST) {
- release_sock(sk);
- return -ENOTCONN;
- }
- enqueue_fn = qrtr_bcast_enqueue;
- } else if (addr->sq_node == ipc->us.sq_node) {
- enqueue_fn = qrtr_local_enqueue;
- } else {
- node = qrtr_node_lookup(addr->sq_node);
- if (!node) {
- release_sock(sk);
- return -ECONNRESET;
- }
- enqueue_fn = qrtr_node_enqueue;
- }
-
- plen = (len + 3) & ~3;
- skb = sock_alloc_send_skb(sk, plen + QRTR_HDR_MAX_SIZE,
- msg->msg_flags & MSG_DONTWAIT, &rc);
- if (!skb) {
- rc = -ENOMEM;
- goto out_node;
- }
-
- skb_reserve(skb, QRTR_HDR_MAX_SIZE);
-
- rc = memcpy_from_msg(skb_put(skb, len), msg, len);
- if (rc) {
- kfree_skb(skb);
- goto out_node;
- }
-
- if (ipc->us.sq_port == QRTR_PORT_CTRL) {
- if (len < 4) {
- rc = -EINVAL;
- kfree_skb(skb);
- goto out_node;
- }
-
- /* control messages already require the type as 'command' */
- skb_copy_bits(skb, 0, &qrtr_type, 4);
- }
-
- type = le32_to_cpu(qrtr_type);
- rc = enqueue_fn(node, skb, type, &ipc->us, addr);
- if (rc >= 0)
- rc = len;
-
-out_node:
- qrtr_node_release(node);
- release_sock(sk);
-
- return rc;
-}
-
-static int qrtr_send_resume_tx(struct qrtr_cb *cb)
-{
- struct sockaddr_qrtr remote = { AF_QIPCRTR, cb->src_node, cb->src_port };
- struct sockaddr_qrtr local = { AF_QIPCRTR, cb->dst_node, cb->dst_port };
- struct qrtr_ctrl_pkt *pkt;
- struct qrtr_node *node;
- struct sk_buff *skb;
- int ret;
-
- node = qrtr_node_lookup(remote.sq_node);
- if (!node)
- return -EINVAL;
-
- skb = qrtr_alloc_ctrl_packet(&pkt);
- if (!skb)
- return -ENOMEM;
-
- pkt->cmd = cpu_to_le32(QRTR_TYPE_RESUME_TX);
- pkt->client.node = cpu_to_le32(cb->dst_node);
- pkt->client.port = cpu_to_le32(cb->dst_port);
-
- ret = qrtr_node_enqueue(node, skb, QRTR_TYPE_RESUME_TX, &local, &remote);
-
- qrtr_node_release(node);
-
- return ret;
-}
-
-static int qrtr_recvmsg(struct socket *sock, struct msghdr *msg,
- size_t size, int flags)
-{
- DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, msg->msg_name);
- struct sock *sk = sock->sk;
- struct sk_buff *skb;
- struct qrtr_cb *cb;
- int copied, rc;
-
- lock_sock(sk);
-
- if (sock_flag(sk, SOCK_ZAPPED)) {
- release_sock(sk);
- return -EADDRNOTAVAIL;
- }
-
- skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
- flags & MSG_DONTWAIT, &rc);
- if (!skb) {
- release_sock(sk);
- return rc;
- }
- cb = (struct qrtr_cb *)skb->cb;
-
- copied = skb->len;
- if (copied > size) {
- copied = size;
- msg->msg_flags |= MSG_TRUNC;
- }
-
- rc = skb_copy_datagram_msg(skb, 0, msg, copied);
- if (rc < 0)
- goto out;
- rc = copied;
-
- if (addr) {
- /* There is an anonymous 2-byte hole after sq_family,
- * make sure to clear it.
- */
- memset(addr, 0, sizeof(*addr));
-
- addr->sq_family = AF_QIPCRTR;
- addr->sq_node = cb->src_node;
- addr->sq_port = cb->src_port;
- msg->msg_namelen = sizeof(*addr);
- }
-
-out:
- if (cb->confirm_rx)
- qrtr_send_resume_tx(cb);
-
- skb_free_datagram(sk, skb);
- release_sock(sk);
-
- return rc;
-}
-
-static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
- int len, int flags)
-{
- DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sock *sk = sock->sk;
- int rc;
-
- if (len < sizeof(*addr) || addr->sq_family != AF_QIPCRTR)
- return -EINVAL;
-
- lock_sock(sk);
-
- sk->sk_state = TCP_CLOSE;
- sock->state = SS_UNCONNECTED;
-
- rc = qrtr_autobind(sock);
- if (rc) {
- release_sock(sk);
- return rc;
- }
-
- ipc->peer = *addr;
- sock->state = SS_CONNECTED;
- sk->sk_state = TCP_ESTABLISHED;
-
- release_sock(sk);
-
- return 0;
-}
-
-static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
- int peer)
-{
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sockaddr_qrtr qaddr;
- struct sock *sk = sock->sk;
-
- lock_sock(sk);
- if (peer) {
- if (sk->sk_state != TCP_ESTABLISHED) {
- release_sock(sk);
- return -ENOTCONN;
- }
-
- qaddr = ipc->peer;
- } else {
- qaddr = ipc->us;
- }
- release_sock(sk);
-
- qaddr.sq_family = AF_QIPCRTR;
-
- memcpy(saddr, &qaddr, sizeof(qaddr));
-
- return sizeof(qaddr);
-}
-
-static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
-{
- void __user *argp = (void __user *)arg;
- struct qrtr_sock *ipc = qrtr_sk(sock->sk);
- struct sock *sk = sock->sk;
- struct sockaddr_qrtr *sq;
- struct sk_buff *skb;
- struct ifreq ifr;
- long len = 0;
- int rc = 0;
-
- lock_sock(sk);
-
- switch (cmd) {
- case TIOCOUTQ:
- len = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
- if (len < 0)
- len = 0;
- rc = put_user(len, (int __user *)argp);
- break;
- case TIOCINQ:
- skb = skb_peek(&sk->sk_receive_queue);
- if (skb)
- len = skb->len;
- rc = put_user(len, (int __user *)argp);
- break;
- case SIOCGIFADDR:
- if (copy_from_user(&ifr, argp, sizeof(ifr))) {
- rc = -EFAULT;
- break;
- }
-
- sq = (struct sockaddr_qrtr *)&ifr.ifr_addr;
- *sq = ipc->us;
- if (copy_to_user(argp, &ifr, sizeof(ifr))) {
- rc = -EFAULT;
- break;
- }
- break;
- case SIOCADDRT:
- case SIOCDELRT:
- case SIOCSIFADDR:
- case SIOCGIFDSTADDR:
- case SIOCSIFDSTADDR:
- case SIOCGIFBRDADDR:
- case SIOCSIFBRDADDR:
- case SIOCGIFNETMASK:
- case SIOCSIFNETMASK:
- rc = -EINVAL;
- break;
- default:
- rc = -ENOIOCTLCMD;
- break;
- }
-
- release_sock(sk);
-
- return rc;
-}
-
-static int qrtr_release(struct socket *sock)
-{
- struct sock *sk = sock->sk;
- struct qrtr_sock *ipc;
-
- if (!sk)
- return 0;
-
- lock_sock(sk);
-
- ipc = qrtr_sk(sk);
- sk->sk_shutdown = SHUTDOWN_MASK;
- if (!sock_flag(sk, SOCK_DEAD))
- sk->sk_state_change(sk);
-
- sock_set_flag(sk, SOCK_DEAD);
- sock_orphan(sk);
- sock->sk = NULL;
-
- if (!sock_flag(sk, SOCK_ZAPPED))
- qrtr_port_remove(ipc);
-
- skb_queue_purge(&sk->sk_receive_queue);
-
- release_sock(sk);
- sock_put(sk);
-
- return 0;
-}
-
-static const struct proto_ops qrtr_proto_ops = {
- .owner = THIS_MODULE,
- .family = AF_QIPCRTR,
- .bind = qrtr_bind,
- .connect = qrtr_connect,
- .socketpair = sock_no_socketpair,
- .accept = sock_no_accept,
- .listen = sock_no_listen,
- .sendmsg = qrtr_sendmsg,
- .recvmsg = qrtr_recvmsg,
- .getname = qrtr_getname,
- .ioctl = qrtr_ioctl,
- .gettstamp = sock_gettstamp,
- .poll = datagram_poll,
- .shutdown = sock_no_shutdown,
- .release = qrtr_release,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-};
-
-static struct proto qrtr_proto = {
- .name = "QIPCRTR",
- .owner = THIS_MODULE,
- .obj_size = sizeof(struct qrtr_sock),
-};
-
-static int qrtr_create(struct net *net, struct socket *sock,
- int protocol, int kern)
-{
- struct qrtr_sock *ipc;
- struct sock *sk;
-
- if (sock->type != SOCK_DGRAM)
- return -EPROTOTYPE;
-
- sk = sk_alloc(net, AF_QIPCRTR, GFP_KERNEL, &qrtr_proto, kern);
- if (!sk)
- return -ENOMEM;
-
- sock_set_flag(sk, SOCK_ZAPPED);
-
- sock_init_data(sock, sk);
- sock->ops = &qrtr_proto_ops;
-
- ipc = qrtr_sk(sk);
- ipc->us.sq_family = AF_QIPCRTR;
- ipc->us.sq_node = qrtr_local_nid;
- ipc->us.sq_port = 0;
-
- return 0;
-}
-
-static const struct net_proto_family qrtr_family = {
- .owner = THIS_MODULE,
- .family = AF_QIPCRTR,
- .create = qrtr_create,
-};
-
-static int __init qrtr_proto_init(void)
-{
- int rc;
-
- rc = proto_register(&qrtr_proto, 1);
- if (rc)
- return rc;
-
- rc = sock_register(&qrtr_family);
- if (rc) {
- proto_unregister(&qrtr_proto);
- return rc;
- }
-
- qrtr_ns_init();
-
- return rc;
-}
-postcore_initcall(qrtr_proto_init);
-
-static void __exit qrtr_proto_fini(void)
-{
- qrtr_ns_remove();
- sock_unregister(qrtr_family.family);
- proto_unregister(&qrtr_proto);
-}
-module_exit(qrtr_proto_fini);
-
-MODULE_DESCRIPTION("Qualcomm IPC-router driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS_NETPROTO(PF_QIPCRTR);
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index e9b4ea3d934f..3a68d65f7d15 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1831,6 +1831,10 @@ static int sctp_sendmsg_to_asoc(struct sctp_association *asoc,
err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len);
if (err)
goto err;
+ if (unlikely(sinfo->sinfo_stream >= asoc->stream.outcnt)) {
+ err = -EINVAL;
+ goto err;
+ }
}
if (sctp_state(asoc, CLOSED)) {
diff --git a/net/sctp/stream_interleave.c b/net/sctp/stream_interleave.c
index 6b13f737ebf2..e3aad75cb11d 100644
--- a/net/sctp/stream_interleave.c
+++ b/net/sctp/stream_interleave.c
@@ -1162,7 +1162,8 @@ static void sctp_generate_iftsn(struct sctp_outq *q, __u32 ctsn)
#define _sctp_walk_ifwdtsn(pos, chunk, end) \
for (pos = chunk->subh.ifwdtsn_hdr->skip; \
- (void *)pos < (void *)chunk->subh.ifwdtsn_hdr->skip + (end); pos++)
+ (void *)pos <= (void *)chunk->subh.ifwdtsn_hdr->skip + (end) - \
+ sizeof(struct sctp_ifwdtsn_skip); pos++)
#define sctp_walk_ifwdtsn(pos, ch) \
_sctp_walk_ifwdtsn((pos), (ch), ntohs((ch)->chunk_hdr->length) - \
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 97c0bddba7a3..60754a292589 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -424,14 +424,23 @@ static int unix_gid_hash(kuid_t uid)
return hash_long(from_kuid(&init_user_ns, uid), GID_HASHBITS);
}
-static void unix_gid_put(struct kref *kref)
+static void unix_gid_free(struct rcu_head *rcu)
{
- struct cache_head *item = container_of(kref, struct cache_head, ref);
- struct unix_gid *ug = container_of(item, struct unix_gid, h);
+ struct unix_gid *ug = container_of(rcu, struct unix_gid, rcu);
+ struct cache_head *item = &ug->h;
+
if (test_bit(CACHE_VALID, &item->flags) &&
!test_bit(CACHE_NEGATIVE, &item->flags))
put_group_info(ug->gi);
- kfree_rcu(ug, rcu);
+ kfree(ug);
+}
+
+static void unix_gid_put(struct kref *kref)
+{
+ struct cache_head *item = container_of(kref, struct cache_head, ref);
+ struct unix_gid *ug = container_of(item, struct unix_gid, h);
+
+ call_rcu(&ug->rcu, unix_gid_free);
}
static int unix_gid_match(struct cache_head *corig, struct cache_head *cnew)
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index a5fe72c504ff..6d37cb780452 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -42,6 +42,12 @@ $(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
# Fail if the linker is gold as it's not capable of linking the kernel proper
$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
+# Get the assembler name, version, and error out if it is not supported.
+as-info := $(shell,$(srctree)/scripts/as-version.sh $(CC) $(CLANG_FLAGS))
+$(error-if,$(success,test -z "$(as-info)"),Sorry$(comma) this assembler is not supported.)
+as-name := $(shell,set -- $(as-info) && echo $1)
+as-version := $(shell,set -- $(as-info) && echo $2)
+
# machine bit flags
# $(m32-flag): -m32 if the compiler supports it, or an empty string otherwise.
# $(m64-flag): -m64 if the compiler supports it, or an empty string otherwise.
diff --git a/scripts/as-version.sh b/scripts/as-version.sh
new file mode 100755
index 000000000000..532270bd4b7e
--- /dev/null
+++ b/scripts/as-version.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Print the assembler name and its version in a 5 or 6-digit form.
+# Also, perform the minimum version check.
+# (If it is the integrated assembler, return 0 as the version, and
+# skip the version check.)
+
+set -e
+
+# Convert the version string x.y.z to a canonical 5 or 6-digit form.
+get_canonical_version()
+{
+ IFS=.
+ set -- $1
+
+ # If the 2nd or 3rd field is missing, fill it with a zero.
+ #
+ # The 4th field, if present, is ignored.
+ # This occurs in development snapshots as in 2.35.1.20201116
+ echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
+}
+
+# Clang fails to handle -Wa,--version unless -fno-integrated-as is given.
+# We check -fintegrated-as, expecting it is explicitly passed in for the
+# integrated assembler case.
+check_integrated_as()
+{
+ while [ $# -gt 0 ]; do
+ if [ "$1" = -fintegrated-as ]; then
+ # For the integrated assembler, we do not check the
+ # version here. It is the same as the clang version, and
+ # it has been already checked by scripts/cc-version.sh.
+ echo LLVM 0
+ exit 0
+ fi
+ shift
+ done
+}
+
+check_integrated_as "$@"
+
+orig_args="$@"
+
+# Get the first line of the --version output.
+IFS='
+'
+set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler /dev/null -o /dev/null 2>/dev/null)
+
+# Split the line on spaces.
+IFS=' '
+set -- $1
+
+if [ "$1" = GNU -a "$2" = assembler ]; then
+ shift $(($# - 1))
+ version=$1
+ name=GNU
+else
+ echo "$orig_args: unknown assembler invoked" >&2
+ exit 1
+fi
+
+# Some distributions append a package release number, as in 2.34-4.fc32
+# Trim the hyphen and any characters that follow.
+version=${version%-*}
+
+cversion=$(get_canonical_version $version)
+
+echo $name $cversion
diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
index 346757a87dbc..485427f40dba 100755
--- a/scripts/dummy-tools/gcc
+++ b/scripts/dummy-tools/gcc
@@ -67,6 +67,12 @@ if arg_contain -E "$@"; then
fi
fi
+# To set CONFIG_AS_IS_GNU
+if arg_contain -Wa,--version "$@"; then
+ echo "GNU assembler (scripts/dummy-tools) 2.50"
+ exit 0
+fi
+
if arg_contain -S "$@"; then
# For scripts/gcc-x86-*-has-stack-protector.sh
if arg_contain -fstack-protector "$@"; then
diff --git a/sound/firewire/tascam/tascam-stream.c b/sound/firewire/tascam/tascam-stream.c
index eb07e1decf9b..47de9727ac73 100644
--- a/sound/firewire/tascam/tascam-stream.c
+++ b/sound/firewire/tascam/tascam-stream.c
@@ -475,7 +475,7 @@ int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate)
err = amdtp_domain_start(&tscm->domain, 0);
if (err < 0)
- return err;
+ goto error;
if (!amdtp_stream_wait_callback(&tscm->rx_stream,
CALLBACK_TIMEOUT) ||
diff --git a/sound/i2c/cs8427.c b/sound/i2c/cs8427.c
index 8634d4f466b3..e8c4c39cea12 100644
--- a/sound/i2c/cs8427.c
+++ b/sound/i2c/cs8427.c
@@ -553,10 +553,13 @@ int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active)
if (snd_BUG_ON(!cs8427))
return -ENXIO;
chip = cs8427->private_data;
- if (active)
+ if (active) {
memcpy(chip->playback.pcm_status,
chip->playback.def_status, 24);
- chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ } else {
+ chip->playback.pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ }
snd_ctl_notify(cs8427->bus->card,
SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
&chip->playback.pcm_ctl->id);
diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c
index 8d2c101d66a2..1c4388b847d1 100644
--- a/sound/pci/emu10k1/emupcm.c
+++ b/sound/pci/emu10k1/emupcm.c
@@ -1232,7 +1232,7 @@ static int snd_emu10k1_capture_mic_close(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
- emu->capture_interrupt = NULL;
+ emu->capture_mic_interrupt = NULL;
emu->pcm_capture_mic_substream = NULL;
return 0;
}
@@ -1340,7 +1340,7 @@ static int snd_emu10k1_capture_efx_close(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
- emu->capture_interrupt = NULL;
+ emu->capture_efx_interrupt = NULL;
emu->pcm_capture_efx_substream = NULL;
return 0;
}
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2af9cd7b7999..18309fa17fb8 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2632,6 +2632,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = {
SND_PCI_QUIRK(0x1462, 0xda57, "MSI Z270-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),
+ SND_PCI_QUIRK(0x1558, 0x3702, "Clevo X370SN[VW]", ALC1220_FIXUP_CLEVO_PB51ED_PINS),
SND_PCI_QUIRK(0x1558, 0x50d3, "Clevo PC50[ER][CDF]", ALC1220_FIXUP_CLEVO_PB51ED_PINS),
SND_PCI_QUIRK(0x1558, 0x65d1, "Clevo PB51[ER][CDF]", ALC1220_FIXUP_CLEVO_PB51ED_PINS),
SND_PCI_QUIRK(0x1558, 0x65d2, "Clevo PB51R[CDF]", ALC1220_FIXUP_CLEVO_PB51ED_PINS),
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 6fc0c4e77cd1..76c5a2b64ef5 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1707,6 +1707,7 @@ static const struct snd_pci_quirk stac925x_fixup_tbl[] = {
};
static const struct hda_pintbl ref92hd73xx_pin_configs[] = {
+ // Port A-H
{ 0x0a, 0x02214030 },
{ 0x0b, 0x02a19040 },
{ 0x0c, 0x01a19020 },
@@ -1715,9 +1716,12 @@ static const struct hda_pintbl ref92hd73xx_pin_configs[] = {
{ 0x0f, 0x01014010 },
{ 0x10, 0x01014020 },
{ 0x11, 0x01014030 },
+ // CD in
{ 0x12, 0x02319040 },
+ // Digial Mic ins
{ 0x13, 0x90a000f0 },
{ 0x14, 0x90a000f0 },
+ // Digital outs
{ 0x22, 0x01452050 },
{ 0x23, 0x01452050 },
{}
@@ -1758,6 +1762,7 @@ static const struct hda_pintbl alienware_m17x_pin_configs[] = {
};
static const struct hda_pintbl intel_dg45id_pin_configs[] = {
+ // Analog outputs
{ 0x0a, 0x02214230 },
{ 0x0b, 0x02A19240 },
{ 0x0c, 0x01013214 },
@@ -1765,6 +1770,9 @@ static const struct hda_pintbl intel_dg45id_pin_configs[] = {
{ 0x0e, 0x01A19250 },
{ 0x0f, 0x01011212 },
{ 0x10, 0x01016211 },
+ // Digital output
+ { 0x22, 0x01451380 },
+ { 0x23, 0x40f000f0 },
{}
};
@@ -1955,6 +1963,8 @@ static const struct snd_pci_quirk stac92hd73xx_fixup_tbl[] = {
"DFI LanParty", STAC_92HD73XX_REF),
SND_PCI_QUIRK(PCI_VENDOR_ID_DFI, 0x3101,
"DFI LanParty", STAC_92HD73XX_REF),
+ SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5001,
+ "Intel DP45SG", STAC_92HD73XX_INTEL),
SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5002,
"Intel DG45ID", STAC_92HD73XX_INTEL),
SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5003,
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index 2c1305bf0572..6de3e47b92d8 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -436,23 +436,28 @@ static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev,
return 0;
}
-static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai,
- unsigned int tx_mask, unsigned int rx_mask,
- int slots, int slot_width)
+static int hdac_hdmi_set_stream(struct snd_soc_dai *dai,
+ void *stream, int direction)
{
struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
struct hdac_device *hdev = hdmi->hdev;
struct hdac_hdmi_dai_port_map *dai_map;
struct hdac_hdmi_pcm *pcm;
+ struct hdac_stream *hstream;
- dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, tx_mask);
+ if (!stream)
+ return -EINVAL;
+
+ hstream = (struct hdac_stream *)stream;
+
+ dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, hstream->stream_tag);
dai_map = &hdmi->dai_map[dai->id];
pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
if (pcm)
- pcm->stream_tag = (tx_mask << 4);
+ pcm->stream_tag = (hstream->stream_tag << 4);
return 0;
}
@@ -1544,7 +1549,7 @@ static const struct snd_soc_dai_ops hdmi_dai_ops = {
.startup = hdac_hdmi_pcm_open,
.shutdown = hdac_hdmi_pcm_close,
.hw_params = hdac_hdmi_set_hw_params,
- .set_tdm_slot = hdac_hdmi_set_tdm_slot,
+ .set_stream = hdac_hdmi_set_stream,
};
/*
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index 558d34fbd331..61aa2c47fbd5 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -969,9 +969,16 @@ static void btf_dump_emit_struct_def(struct btf_dump *d,
if (is_struct)
btf_dump_emit_bit_padding(d, off, t->size * 8, align, false, lvl + 1);
- if (vlen)
+ /*
+ * Keep `struct empty {}` on a single line,
+ * only print newline when there are regular or padding fields.
+ */
+ if (vlen || t->size) {
btf_dump_printf(d, "\n");
- btf_dump_printf(d, "%s}", pfx(lvl));
+ btf_dump_printf(d, "%s}", pfx(lvl));
+ } else {
+ btf_dump_printf(d, "}");
+ }
if (packed)
btf_dump_printf(d, " __attribute__((packed))");
}
diff --git a/tools/testing/selftests/intel_pstate/aperf.c b/tools/testing/selftests/intel_pstate/aperf.c
index f6cd03a87493..a8acf3996973 100644
--- a/tools/testing/selftests/intel_pstate/aperf.c
+++ b/tools/testing/selftests/intel_pstate/aperf.c
@@ -10,8 +10,12 @@
#include <sched.h>
#include <errno.h>
#include <string.h>
+#include <time.h>
#include "../kselftest.h"
+#define MSEC_PER_SEC 1000L
+#define NSEC_PER_MSEC 1000000L
+
void usage(char *name) {
printf ("Usage: %s cpunum\n", name);
}
@@ -22,7 +26,7 @@ int main(int argc, char **argv) {
long long tsc, old_tsc, new_tsc;
long long aperf, old_aperf, new_aperf;
long long mperf, old_mperf, new_mperf;
- struct timeb before, after;
+ struct timespec before, after;
long long int start, finish, total;
cpu_set_t cpuset;
@@ -55,7 +59,10 @@ int main(int argc, char **argv) {
return 1;
}
- ftime(&before);
+ if (clock_gettime(CLOCK_MONOTONIC, &before) < 0) {
+ perror("clock_gettime");
+ return 1;
+ }
pread(fd, &old_tsc, sizeof(old_tsc), 0x10);
pread(fd, &old_aperf, sizeof(old_mperf), 0xe7);
pread(fd, &old_mperf, sizeof(old_aperf), 0xe8);
@@ -64,7 +71,10 @@ int main(int argc, char **argv) {
sqrt(i);
}
- ftime(&after);
+ if (clock_gettime(CLOCK_MONOTONIC, &after) < 0) {
+ perror("clock_gettime");
+ return 1;
+ }
pread(fd, &new_tsc, sizeof(new_tsc), 0x10);
pread(fd, &new_aperf, sizeof(new_mperf), 0xe7);
pread(fd, &new_mperf, sizeof(new_aperf), 0xe8);
@@ -73,11 +83,11 @@ int main(int argc, char **argv) {
aperf = new_aperf-old_aperf;
mperf = new_mperf-old_mperf;
- start = before.time*1000 + before.millitm;
- finish = after.time*1000 + after.millitm;
+ start = before.tv_sec*MSEC_PER_SEC + before.tv_nsec/NSEC_PER_MSEC;
+ finish = after.tv_sec*MSEC_PER_SEC + after.tv_nsec/NSEC_PER_MSEC;
total = finish - start;
- printf("runTime: %4.2f\n", 1.0*total/1000);
+ printf("runTime: %4.2f\n", 1.0*total/MSEC_PER_SEC);
printf("freq: %7.0f\n", tsc / (1.0*aperf / (1.0 * mperf)) / total);
return 0;
}
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