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Message-ID: <20080527141346.12851.2280.stgit@localhost.localdomain>
Date: Tue, 27 May 2008 07:13:46 -0700
From: PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>
To: jeff@...zik.org, davem@...emloft.net
Cc: netdev@...r.kernel.org
Subject: [PATCH 1/3] [NET-NEXT]: Add DCB netlink interface definition
This patch adds the netlink interface definition for Data Center Bridging.
This technology uses 802.1Qaz and 801.1Qbb for extending ethernet to
converge different traffic types on a single link. E.g. Fibre Channel
over Ethernet and regular LAN traffic. The goal is to use priority flow
control to pause individual flows at the MAC/network level, without
impacting other network flows.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
---
include/linux/dcbnl.h | 241 +++++++++++++++
include/linux/netdevice.h | 8
net/Kconfig | 1
net/Makefile | 3
net/dcb/Kconfig | 12 +
net/dcb/Makefile | 1
net/dcb/dcbnl.c | 722 +++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 988 insertions(+), 0 deletions(-)
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
new file mode 100644
index 0000000..db50f6c
--- /dev/null
+++ b/include/linux/dcbnl.h
@@ -0,0 +1,241 @@
+#ifndef __LINUX_DCBNL_H__
+#define __LINUX_DCBNL_H__
+/*
+ * Data Center Bridging (DCB) netlink header
+ *
+ * Copyright 2008, Peter P. Waskiewicz Jr. <peter.p.waskiewicz.jr@...el.com>
+ */
+
+#define DCB_PROTO_VERSION 1
+
+/**
+ * enum dcbnl_commands - supported DCB commands
+ *
+ * @DCB_CMD_UNDEFINED: unspecified command to catch errors
+ * @DCB_CMD_GSTATE: request the state of DCB in the device
+ * @DCB_CMD_SSTATE: set the state of DCB in the device
+ * @DCB_CMD_PGTX_GCFG: request the priority group configuration for Tx
+ * @DCB_CMD_PGTX_SCFG: set the priority group configuration for Tx
+ * @DCB_CMD_PGRX_GCFG: request the priority group configuration for Rx
+ * @DCB_CMD_PGRX_SCFG: set the priority group configuration for Rx
+ * @DCB_CMD_PFC_GCFG: request the priority flow control configuration
+ * @DCB_CMD_PFC_SCFG: set the priority flow control configuration
+ * @DCB_CMD_SET_ALL: apply all changes to the underlying device
+ * @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
+ * device. Only useful when using bonding.
+ */
+enum dcbnl_commands {
+ DCB_CMD_UNDEFINED,
+
+ DCB_CMD_GSTATE,
+ DCB_CMD_SSTATE,
+
+ DCB_CMD_PGTX_GCFG,
+ DCB_CMD_PGTX_SCFG,
+ DCB_CMD_PGRX_GCFG,
+ DCB_CMD_PGRX_SCFG,
+
+ DCB_CMD_PFC_GCFG,
+ DCB_CMD_PFC_SCFG,
+
+ DCB_CMD_SET_ALL,
+ DCB_CMD_GPERM_HWADDR,
+
+ __DCB_CMD_ENUM_MAX,
+ DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
+};
+
+
+/**
+ * enum dcbnl_attrs - DCB top-level netlink attributes
+ *
+ * @DCB_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_ATTR_IFNAME: interface name of the underlying device (NLA_STRING)
+ * @DCB_ATTR_STATE: state of the DCB state machine in the device (NLA_U8)
+ * @DCB_ATTR_PFC_CFG: priority flow control configuration (NLA_NESTED)
+ * @DCB_ATTR_PG_CFG: priority group configuration (NLA_NESTED)
+ * @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
+ * @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
+ */
+enum dcbnl_attrs {
+ DCB_ATTR_UNDEFINED,
+
+ DCB_ATTR_IFNAME,
+ DCB_ATTR_STATE,
+ DCB_ATTR_PFC_CFG,
+ DCB_ATTR_PG_CFG,
+ DCB_ATTR_SET_ALL,
+ DCB_ATTR_PERM_HWADDR,
+
+ __DCB_ATTR_ENUM_MAX,
+ DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
+};
+
+
+/**
+ * enum dcbnl_perm_hwaddr_attrs - DCB Permanent HW Address nested attributes
+ *
+ * @DCB_PERM_HW_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_PERM_HW_ATTR_0: MAC address from receive address 0 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_1: MAC address from receive address 1 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_2: MAC address from receive address 2 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_3: MAC address from receive address 3 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_4: MAC address from receive address 4 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_5: MAC address from receive address 5 (NLA_U8)
+ * @DCB_PERM_HW_ATTR_ALL: apply to all MAC addresses (NLA_FLAG)
+ *
+ * These attributes are used when bonding DCB interfaces together.
+ *
+ */
+enum dcbnl_perm_hwaddr_attrs {
+ DCB_PERM_HW_ATTR_UNDEFINED,
+
+ DCB_PERM_HW_ATTR_0,
+ DCB_PERM_HW_ATTR_1,
+ DCB_PERM_HW_ATTR_2,
+ DCB_PERM_HW_ATTR_3,
+ DCB_PERM_HW_ATTR_4,
+ DCB_PERM_HW_ATTR_5,
+ DCB_PERM_HW_ATTR_ALL,
+
+ __DCB_PERM_HW_ATTR_ENUM_MAX,
+ DCB_PERM_HW_ATTR_MAX = __DCB_PERM_HW_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_pfc_attrs - DCB Priority Flow Control user-priority nested attrs
+ *
+ * @DCB_PFC_UP_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_PFC_UP_ATTR_0: Priority Flow Control value for User Priority 0 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_1: Priority Flow Control value for User Priority 1 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_2: Priority Flow Control value for User Priority 2 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_3: Priority Flow Control value for User Priority 3 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_4: Priority Flow Control value for User Priority 4 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_5: Priority Flow Control value for User Priority 5 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_6: Priority Flow Control value for User Priority 6 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_7: Priority Flow Control value for User Priority 7 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_MAX: highest attribute number currently defined
+ * @DCB_PFC_UP_ATTR_ALL: apply to all priority flow control attrs (NLA_FLAG)
+ *
+ */
+enum dcbnl_pfc_up_attrs {
+ DCB_PFC_UP_ATTR_UNDEFINED,
+
+ DCB_PFC_UP_ATTR_0,
+ DCB_PFC_UP_ATTR_1,
+ DCB_PFC_UP_ATTR_2,
+ DCB_PFC_UP_ATTR_3,
+ DCB_PFC_UP_ATTR_4,
+ DCB_PFC_UP_ATTR_5,
+ DCB_PFC_UP_ATTR_6,
+ DCB_PFC_UP_ATTR_7,
+ DCB_PFC_UP_ATTR_ALL,
+
+ __DCB_PFC_UP_ATTR_ENUM_MAX,
+ DCB_PFC_UP_ATTR_MAX = __DCB_PFC_UP_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_pg_attrs - DCB Priority Group attributes
+ *
+ * @DCB_PG_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_PG_ATTR_TC_0: Priority Group Traffic Class 0 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_1: Priority Group Traffic Class 1 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_2: Priority Group Traffic Class 2 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_3: Priority Group Traffic Class 3 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_4: Priority Group Traffic Class 4 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_5: Priority Group Traffic Class 5 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_6: Priority Group Traffic Class 6 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_7: Priority Group Traffic Class 7 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_MAX: highest attribute number currently defined
+ * @DCB_PG_ATTR_TC_ALL: apply to all traffic classes (NLA_NESTED)
+ * @DCB_PG_ATTR_BWG_0: Bandwidth group 0 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_1: Bandwidth group 1 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_2: Bandwidth group 2 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_3: Bandwidth group 3 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_4: Bandwidth group 4 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_5: Bandwidth group 5 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_6: Bandwidth group 6 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_7: Bandwidth group 7 configuration (NLA_U8)
+ * @DCB_PG_ATTR_BWG_MAX: highest attribute number currently defined
+ * @DCB_PG_ATTR_BWG_ALL: apply to all bandwidth groups (NLA_FLAG)
+ *
+ */
+enum dcbnl_pg_attrs {
+ DCB_PG_ATTR_UNDEFINED,
+
+ DCB_PG_ATTR_TC_0,
+ DCB_PG_ATTR_TC_1,
+ DCB_PG_ATTR_TC_2,
+ DCB_PG_ATTR_TC_3,
+ DCB_PG_ATTR_TC_4,
+ DCB_PG_ATTR_TC_5,
+ DCB_PG_ATTR_TC_6,
+ DCB_PG_ATTR_TC_7,
+ DCB_PG_ATTR_TC_MAX,
+ DCB_PG_ATTR_TC_ALL,
+
+ DCB_PG_ATTR_BWG_0,
+ DCB_PG_ATTR_BWG_1,
+ DCB_PG_ATTR_BWG_2,
+ DCB_PG_ATTR_BWG_3,
+ DCB_PG_ATTR_BWG_4,
+ DCB_PG_ATTR_BWG_5,
+ DCB_PG_ATTR_BWG_6,
+ DCB_PG_ATTR_BWG_7,
+ DCB_PG_ATTR_BWG_MAX,
+ DCB_PG_ATTR_BWG_ALL,
+
+ __DCB_PG_ATTR_ENUM_MAX,
+ DCB_PG_ATTR_MAX = __DCB_PG_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_tc_attrs - DCB Traffic Class attributes
+ *
+ * @DCB_TC_ATTR_PARAM_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_TC_ATTR_PARAM_STRICT_PRIO: Type of strict bandwidth aggregration (link
+ * strict or group strict) (NLA_U8)
+ * @DCB_TC_ATTR_PARAM_BW_GROUP_ID: Bandwidth group this traffic class belongs to
+ * (NLA_U8)
+ * @DCB_TC_ATTR_PARAM_BW_PCT: Percentage of bandwidth in the bandwidth group
+ * this traffic class has (NLA_U8)
+ * @DCB_TC_ATTR_PARAM_UP_MAPPING: Traffic class to user priority map (NLA_U8)
+ * @DCB_TC_ATTR_PARAM_ALL: apply to all traffic class parameters (NLA_FLAG)
+ *
+ */
+enum dcbnl_tc_attrs {
+ DCB_TC_ATTR_PARAM_UNDEFINED,
+
+ DCB_TC_ATTR_PARAM_STRICT_PRIO,
+ DCB_TC_ATTR_PARAM_BW_GROUP_ID,
+ DCB_TC_ATTR_PARAM_BW_PCT,
+ DCB_TC_ATTR_PARAM_UP_MAPPING,
+ DCB_TC_ATTR_PARAM_ALL,
+
+ __DCB_TC_ATTR_PARAM_ENUM_MAX,
+ DCB_TC_ATTR_PARAM_MAX = __DCB_TC_ATTR_PARAM_ENUM_MAX - 1,
+};
+
+/*
+ * Ops struct for the netlink callbacks. Used by DCB-enabled drivers through
+ * the netdevice struct.
+ */
+struct dcbnl_genl_ops {
+ u8 (*getstate)(struct net_device *);
+ void (*setstate)(struct net_device *, u8);
+ void (*getpermhwaddr)(struct net_device *, u8 *);
+ void (*setpgtccfgtx)(struct net_device *, int, u8, u8, u8, u8);
+ void (*setpgbwgcfgtx)(struct net_device *, int, u8);
+ void (*setpgtccfgrx)(struct net_device *, int, u8, u8, u8, u8);
+ void (*setpgbwgcfgrx)(struct net_device *, int, u8);
+ void (*getpgtccfgtx)(struct net_device *, int, u8 *, u8 *, u8 *, u8 *);
+ void (*getpgbwgcfgtx)(struct net_device *, int, u8 *);
+ void (*getpgtccfgrx)(struct net_device *, int, u8 *, u8 *, u8 *, u8 *);
+ void (*getpgbwgcfgrx)(struct net_device *, int, u8 *);
+ void (*setpfccfg)(struct net_device *, int, u8);
+ void (*getpfccfg)(struct net_device *, int, u8 *);
+ u8 (*setall)(struct net_device *);
+};
+
+#endif /* __LINUX_DCBNL_H__ */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f27fd20..f28a1fa 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -42,6 +42,9 @@
#include <linux/workqueue.h>
#include <net/net_namespace.h>
+#ifdef CONFIG_DCBNL
+#include <linux/dcbnl.h>
+#endif
struct vlan_group;
struct ethtool_ops;
@@ -752,6 +755,11 @@ struct net_device
#define GSO_MAX_SIZE 65536
unsigned int gso_max_size;
+#ifdef CONFIG_DCBNL
+ /* Data Center Bridging netlink ops */
+ struct dcbnl_genl_ops *dcbnl_ops;
+#endif
+
/* The TX queue control structures */
unsigned int egress_subqueue_count;
struct net_device_subqueue egress_subqueue[1];
diff --git a/net/Kconfig b/net/Kconfig
index acbf7c6..fc6b832 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -192,6 +192,7 @@ source "net/lapb/Kconfig"
source "net/econet/Kconfig"
source "net/wanrouter/Kconfig"
source "net/sched/Kconfig"
+source "net/dcb/Kconfig"
menu "Network testing"
diff --git a/net/Makefile b/net/Makefile
index b7a1364..bc43e77 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -53,6 +53,9 @@ obj-$(CONFIG_NETLABEL) += netlabel/
obj-$(CONFIG_IUCV) += iucv/
obj-$(CONFIG_RFKILL) += rfkill/
obj-$(CONFIG_NET_9P) += 9p/
+ifeq ($(CONFIG_DCBNL),y)
+obj-$(CONFIG_DCB) += dcb/
+endif
ifeq ($(CONFIG_NET),y)
obj-$(CONFIG_SYSCTL) += sysctl_net.o
diff --git a/net/dcb/Kconfig b/net/dcb/Kconfig
new file mode 100644
index 0000000..bdf3880
--- /dev/null
+++ b/net/dcb/Kconfig
@@ -0,0 +1,12 @@
+config DCB
+ tristate "Data Center Bridging support"
+
+config DCBNL
+ bool "Data Center Bridging netlink interface support"
+ depends on DCB
+ default n
+ ---help---
+ This option turns on the netlink interface
+ (dcbnl) for Data Center Bridging capable devices.
+
+ If unsure, say N.
diff --git a/net/dcb/Makefile b/net/dcb/Makefile
new file mode 100644
index 0000000..9930f4c
--- /dev/null
+++ b/net/dcb/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_DCB) += dcbnl.o
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
new file mode 100644
index 0000000..f5f4c31
--- /dev/null
+++ b/net/dcb/dcbnl.c
@@ -0,0 +1,722 @@
+/*
+ * This is the Data Center Bridging configuration interface.
+ *
+ * Copyright 2008, Peter P. Waskiewicz Jr. <peter.p.waskiewicz.jr@...el.com>
+ *
+ */
+
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+#include <net/genetlink.h>
+#include <linux/dcbnl.h>
+
+MODULE_AUTHOR("Peter P Waskiewicz Jr, <peter.p.waskiewicz.jr@...el.com>");
+MODULE_DESCRIPTION("Data Center Bridging generic netlink interface");
+MODULE_LICENSE("GPL");
+
+/* The family */
+static struct genl_family dcbnl_family = {
+ .id = GENL_ID_GENERATE,
+ .hdrsize = 0,
+ .name = "dcbnl",
+ .version = DCB_PROTO_VERSION,
+ .maxattr = DCB_ATTR_MAX,
+};
+
+/* DCB netlink attributes policy */
+static struct nla_policy dcbnl_genl_policy[DCB_ATTR_MAX + 1] = {
+ [DCB_ATTR_IFNAME] = {.type = NLA_STRING, .len = IFNAMSIZ - 1},
+ [DCB_ATTR_STATE] = {.type = NLA_U8},
+ [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
+ [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
+ [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
+ [DCB_ATTR_PERM_HWADDR] = {.type = NLA_NESTED},
+};
+
+/* DCB permanent hardware address nested attributes */
+static struct nla_policy dcbnl_perm_hwaddr_nest[DCB_PERM_HW_ATTR_MAX + 1] = {
+ [DCB_PERM_HW_ATTR_0] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_1] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_2] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_3] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_4] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_5] = {.type = NLA_U8},
+ [DCB_PERM_HW_ATTR_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB priority flow control to User Priority nested attributes */
+static struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
+ [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB priority grouping nested attributes */
+static struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
+ [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_BWG_0] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_1] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_2] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_3] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_4] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_5] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_6] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_7] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BWG_ALL]= {.type = NLA_FLAG},
+};
+
+/* DCB traffic class nested attributes. */
+static struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
+ [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_BW_GROUP_ID] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
+};
+
+/* standard netlink reply call */
+static int dcbnl_reply(u8 value, u8 cmd, u8 attr, struct genl_info *info)
+{
+ struct sk_buff *dcbnl_skb;
+ void *data;
+ int ret = -EINVAL;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ return ret;
+
+ data = genlmsg_put_reply(dcbnl_skb, info, &dcbnl_family, 0, cmd);
+ if (!data)
+ goto err;
+
+ ret = nla_put_u8(dcbnl_skb, attr, value);
+ if (ret)
+ goto err;
+
+ /* end the message, assign the nlmsg_len. */
+ genlmsg_end(dcbnl_skb, data);
+ ret = genlmsg_reply(dcbnl_skb, info);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ kfree(dcbnl_skb);
+ return ret;
+}
+
+static int dcbnl_getstate(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net_device *netdev;
+ int ret = -EINVAL;
+
+ if (!info->attrs[DCB_ATTR_IFNAME])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->getstate)
+ goto err;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev),
+ DCB_CMD_GSTATE, DCB_ATTR_STATE, info);
+err:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_setstate(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net_device *netdev;
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_STATE])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->setstate)
+ goto err;
+
+ value = nla_get_u8(info->attrs[DCB_ATTR_STATE]);
+
+ netdev->dcbnl_ops->setstate(netdev, value);
+
+ ret = dcbnl_reply(0, DCB_CMD_SSTATE, DCB_ATTR_STATE, info);
+err:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_getperm_hwaddr(struct sk_buff *skb, struct genl_info *info)
+{
+ void *data;
+ struct sk_buff *dcbnl_skb;
+ struct nlattr *tb[DCB_PERM_HW_ATTR_MAX + 1], *nest;
+ struct net_device *netdev;
+ u8 perm_addr[MAX_ADDR_LEN];
+ int ret = -EINVAL;
+ int i;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_PERM_HWADDR])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->getpermhwaddr)
+ goto err_out;
+
+ ret = nla_parse_nested(tb, DCB_PERM_HW_ATTR_MAX,
+ info->attrs[DCB_ATTR_PERM_HWADDR],
+ dcbnl_perm_hwaddr_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ data = genlmsg_put_reply(dcbnl_skb, info, &dcbnl_family, 0,
+ DCB_CMD_GPERM_HWADDR);
+ if (!data)
+ goto err;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PERM_HWADDR);
+ if (!nest)
+ goto err;
+
+ netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
+ for (i = 0; i < netdev->addr_len; i++) {
+ ret = nla_put_u8(dcbnl_skb, DCB_ATTR_PERM_HWADDR,
+ perm_addr[i]);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto err;
+ }
+ }
+
+ nla_nest_end(dcbnl_skb, nest);
+
+ genlmsg_end(dcbnl_skb, data);
+
+ ret = genlmsg_reply(dcbnl_skb, info);
+ if (ret)
+ goto err_out;
+
+ dev_put(netdev);
+ return 0;
+err:
+ kfree(dcbnl_skb);
+err_out:
+ dev_put(netdev);
+ return ret;
+}
+
+static int __dcbnl_pg_setcfg(struct genl_info *info, int dir)
+{
+ struct net_device *netdev = NULL;
+ struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
+ struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
+ int ret = -EINVAL;
+ int i;
+ u8 prio = 0, bwg_id = 0, bw_pct = 0, up_map = 0;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_PG_CFG])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops ||
+ !netdev->dcbnl_ops->setpgtccfgtx ||
+ !netdev->dcbnl_ops->setpgtccfgrx ||
+ !netdev->dcbnl_ops->setpgbwgcfgtx ||
+ !netdev->dcbnl_ops->setpgbwgcfgrx)
+ goto err;
+
+ ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
+ info->attrs[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_PG_ATTR_TC_0; i < DCB_PG_ATTR_TC_MAX; i++) {
+ if (!pg_tb[i])
+ continue;
+
+ ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
+ pg_tb[i], dcbnl_tc_param_nest);
+ if (ret)
+ goto err;
+
+ if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
+ prio =
+ nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_GROUP_ID])
+ bwg_id =
+ nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_GROUP_ID]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
+ bw_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
+ up_map =
+ nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
+
+ /* dir: Tx = 0, Rx = 1 */
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->setpgtccfgrx(netdev,
+ i - DCB_PG_ATTR_TC_0,
+ prio, bwg_id, bw_pct, up_map);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->setpgtccfgtx(netdev,
+ i - DCB_PG_ATTR_TC_0,
+ prio, bwg_id, bw_pct, up_map);
+ }
+ }
+
+ for (i = DCB_PG_ATTR_BWG_0; i < DCB_PG_ATTR_BWG_MAX; i++) {
+ if (!pg_tb[i])
+ continue;
+
+ bw_pct = nla_get_u8(pg_tb[i]);
+
+ /* dir: Tx = 0, Rx = 1 */
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
+ i - DCB_PG_ATTR_BWG_0, bw_pct);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
+ i - DCB_PG_ATTR_BWG_0, bw_pct);
+ }
+ }
+
+ ret = dcbnl_reply(0, (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
+ DCB_ATTR_PG_CFG, info);
+
+err:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_pgtx_setcfg(struct sk_buff *skb, struct genl_info *info)
+{
+ return __dcbnl_pg_setcfg(info, 0);
+}
+
+static int dcbnl_pgrx_setcfg(struct sk_buff *skb, struct genl_info *info)
+{
+ return __dcbnl_pg_setcfg(info, 1);
+}
+
+static int __dcbnl_pg_getcfg(struct genl_info *info, int dir)
+{
+ void *data;
+ struct sk_buff *dcbnl_skb;
+ struct nlattr *pg_nest, *param_nest, *tb;
+ struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
+ struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
+ struct net_device *netdev;
+ u8 prio, bwg_id, bw_pct, up_map;
+ int ret = -EINVAL;
+ int i;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_PG_CFG])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops ||
+ !netdev->dcbnl_ops->getpgtccfgtx ||
+ !netdev->dcbnl_ops->getpgtccfgrx ||
+ !netdev->dcbnl_ops->getpgbwgcfgtx ||
+ !netdev->dcbnl_ops->getpgbwgcfgrx)
+ goto err_out;
+
+ ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
+ info->attrs[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ data = genlmsg_put_reply(dcbnl_skb, info, &dcbnl_family, 0,
+ (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG);
+
+ if (!data)
+ goto err;
+
+ pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
+ if (!pg_nest)
+ goto err;
+
+ for (i = DCB_PG_ATTR_TC_0; i < DCB_PG_ATTR_TC_MAX; i++) {
+ if (pg_tb[DCB_PG_ATTR_TC_ALL])
+ tb = pg_tb[DCB_PG_ATTR_TC_ALL];
+ else
+ tb = pg_tb[i];
+ ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
+ tb, dcbnl_tc_param_nest);
+ if (ret)
+ goto err_pg;
+
+ param_nest = nla_nest_start(dcbnl_skb, i);
+ if (!param_nest)
+ goto err_pg;
+
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->getpgtccfgrx(netdev,
+ i - DCB_PG_ATTR_TC_0, &prio,
+ &bwg_id, &bw_pct, &up_map);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->getpgtccfgtx(netdev,
+ i - DCB_PG_ATTR_TC_0, &prio,
+ &bwg_id, &bw_pct, &up_map);
+ }
+
+ if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_GROUP_ID] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_BW_GROUP_ID, bwg_id);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
+ bw_pct);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
+ if (ret)
+ goto err_param;
+ }
+ nla_nest_end(dcbnl_skb, param_nest);
+ }
+
+ for (i = DCB_PG_ATTR_BWG_0; i < DCB_PG_ATTR_BWG_MAX; i++) {
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
+ i - DCB_PG_ATTR_BWG_0, &bw_pct);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
+ i - DCB_PG_ATTR_BWG_0, &bw_pct);
+ }
+ ret = nla_put_u8(dcbnl_skb, i, bw_pct);
+
+ if (ret)
+ goto err_pg;
+ }
+
+ nla_nest_end(dcbnl_skb, pg_nest);
+
+ genlmsg_end(dcbnl_skb, data);
+ ret = genlmsg_reply(dcbnl_skb, info);
+ if (ret)
+ goto err;
+
+ dev_put(netdev);
+ return 0;
+
+err_param:
+ nla_nest_cancel(dcbnl_skb, param_nest);
+err_pg:
+ nla_nest_cancel(dcbnl_skb, pg_nest);
+err:
+ kfree(dcbnl_skb);
+err_out:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_pgtx_getcfg(struct sk_buff *skb, struct genl_info *info)
+{
+ return __dcbnl_pg_getcfg(info, 0);
+}
+
+static int dcbnl_pgrx_getcfg(struct sk_buff *skb, struct genl_info *info)
+{
+ return __dcbnl_pg_getcfg(info, 1);
+}
+
+static int dcbnl_setpfccfg(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nlattr *tb[DCB_PFC_UP_ATTR_MAX + 1];
+ struct net_device *netdev;
+ int i;
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_PFC_CFG])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->setpfccfg)
+ goto err;
+
+ ret = nla_parse_nested(tb, DCB_PFC_UP_ATTR_MAX,
+ info->attrs[DCB_ATTR_PFC_CFG],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
+ value = nla_get_u8(tb[i]);
+ netdev->dcbnl_ops->setpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
+ value);
+ }
+
+ ret = dcbnl_reply(0, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG, info);
+err:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_getpfccfg(struct sk_buff *skb, struct genl_info *info)
+{
+ void *data;
+ struct sk_buff *dcbnl_skb;
+ struct nlattr *tb[DCB_PFC_UP_ATTR_MAX + 1], *nest;
+ struct net_device *netdev;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_PFC_CFG])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->getpfccfg)
+ goto err_out;
+
+ ret = nla_parse_nested(tb, DCB_PFC_UP_ATTR_MAX,
+ info->attrs[DCB_ATTR_PFC_CFG],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ data = genlmsg_put_reply(dcbnl_skb, info, &dcbnl_family, 0,
+ DCB_CMD_PFC_GCFG);
+ if (!data)
+ goto err;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
+ if (!nest)
+ goto err;
+
+ for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
+ netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
+ &value);
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto err;
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ genlmsg_end(dcbnl_skb, data);
+
+ ret = genlmsg_reply(dcbnl_skb, info);
+ if (ret)
+ goto err;
+
+ dev_put(netdev);
+ return 0;
+
+err:
+ kfree(dcbnl_skb);
+err_out:
+ dev_put(netdev);
+ return ret;
+}
+
+static int dcbnl_setall(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net_device *netdev;
+ int ret = -EINVAL;
+
+ if (!info->attrs[DCB_ATTR_IFNAME] || !info->attrs[DCB_ATTR_SET_ALL])
+ return ret;
+
+ netdev = dev_get_by_name(&init_net,
+ nla_data(info->attrs[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return ret;
+
+ if (!netdev->dcbnl_ops || !netdev->dcbnl_ops->setall)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), DCB_CMD_SET_ALL,
+ DCB_ATTR_SET_ALL, info);
+
+ dev_put(netdev);
+ return ret;
+}
+
+static struct genl_ops dcbnl_ops[] = {
+ {
+ .cmd = DCB_CMD_GSTATE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_getstate,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_SSTATE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_setstate,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PGTX_SCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_pgtx_setcfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PGRX_SCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_pgrx_setcfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PFC_SCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_setpfccfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PGTX_GCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_pgtx_getcfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PGRX_GCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_pgrx_getcfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_PFC_GCFG,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_getpfccfg,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_SET_ALL,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_setall,
+ .dumpit = NULL,
+ },
+ {
+ .cmd = DCB_CMD_GPERM_HWADDR,
+ .flags = GENL_ADMIN_PERM,
+ .policy = dcbnl_genl_policy,
+ .doit = dcbnl_getperm_hwaddr,
+ .dumpit = NULL,
+ },
+};
+
+/* init and exit */
+static int __init dcbnl_init(void)
+{
+ int err, i;
+
+ err = genl_register_family(&dcbnl_family);
+ if (err)
+ return err;
+
+ for (i = 0; i < ARRAY_SIZE(dcbnl_ops); i++) {
+ err = genl_register_ops(&dcbnl_family, &dcbnl_ops[i]);
+ if (err)
+ goto err_out;
+ }
+
+ return 0;
+
+err_out:
+ genl_unregister_family(&dcbnl_family);
+ return err;
+}
+module_init(dcbnl_init);
+
+static void __exit dcbnl_exit(void)
+{
+ genl_unregister_family(&dcbnl_family);
+}
+module_exit(dcbnl_exit);
--
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