| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1337335173-3226-10-git-send-email-vipul@chelsio.com>
Date: Fri, 18 May 2012 15:29:32 +0530
From: Vipul Pandya <vipul@...lsio.com>
To: linux-rdma@...r.kernel.org, netdev@...r.kernel.org
Cc: roland@...estorage.com, davem@...emloft.net, divy@...lsio.com,
dm@...lsio.com, kumaras@...lsio.com, swise@...ngridcomputing.com,
Vipul Pandya <vipul@...lsio.com>
Subject: [PATCH 09/10] RDMA/cxgb4: remove kfifo usage
Using kfifos for ID management was limiting the number of QPs and
preventing NP384 MPI jobs. So replace it with a simple bitmap
allocator.
Remove IDs from the IDR tables before deallocating them. This bug was
causing the BUG_ON() in insert_handle() to fire because the ID was
getting reused before being removed from the IDR table.
Signed-off-by: Vipul Pandya <vipul@...lsio.com>
Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---
drivers/infiniband/hw/cxgb4/Makefile | 2 +-
drivers/infiniband/hw/cxgb4/device.c | 37 +++++---
drivers/infiniband/hw/cxgb4/id_table.c | 112 ++++++++++++++++++++++++
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 35 ++++++--
drivers/infiniband/hw/cxgb4/mem.c | 10 +--
drivers/infiniband/hw/cxgb4/provider.c | 9 +--
drivers/infiniband/hw/cxgb4/resource.c | 148 ++++++++------------------------
7 files changed, 203 insertions(+), 150 deletions(-)
create mode 100644 drivers/infiniband/hw/cxgb4/id_table.c
diff --git a/drivers/infiniband/hw/cxgb4/Makefile b/drivers/infiniband/hw/cxgb4/Makefile
index 46b878c..e11cf72 100644
--- a/drivers/infiniband/hw/cxgb4/Makefile
+++ b/drivers/infiniband/hw/cxgb4/Makefile
@@ -2,4 +2,4 @@ ccflags-y := -Idrivers/net/ethernet/chelsio/cxgb4
obj-$(CONFIG_INFINIBAND_CXGB4) += iw_cxgb4.o
-iw_cxgb4-y := device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o
+iw_cxgb4-y := device.o cm.o provider.o mem.o cq.o qp.o resource.o ev.o id_table.o
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 8545629..c8fd1d8 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -252,25 +252,26 @@ static int stats_show(struct seq_file *seq, void *v)
{
struct c4iw_dev *dev = seq->private;
- seq_printf(seq, " Object: %10s %10s %10s\n", "Total", "Current", "Max");
- seq_printf(seq, " PDID: %10llu %10llu %10llu\n",
+ seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current",
+ "Max", "Fail");
+ seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur,
- dev->rdev.stats.pd.max);
- seq_printf(seq, " QID: %10llu %10llu %10llu\n",
+ dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail);
+ seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur,
- dev->rdev.stats.qid.max);
- seq_printf(seq, " TPTMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail);
+ seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur,
- dev->rdev.stats.stag.max);
- seq_printf(seq, " PBLMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail);
+ seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur,
- dev->rdev.stats.pbl.max);
- seq_printf(seq, " RQTMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail);
+ seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur,
- dev->rdev.stats.rqt.max);
- seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail);
+ seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur,
- dev->rdev.stats.ocqp.max);
+ dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail);
seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full);
seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty);
seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop);
@@ -292,11 +293,17 @@ static ssize_t stats_clear(struct file *file, const char __user *buf,
mutex_lock(&dev->rdev.stats.lock);
dev->rdev.stats.pd.max = 0;
+ dev->rdev.stats.pd.fail = 0;
dev->rdev.stats.qid.max = 0;
+ dev->rdev.stats.qid.fail = 0;
dev->rdev.stats.stag.max = 0;
+ dev->rdev.stats.stag.fail = 0;
dev->rdev.stats.pbl.max = 0;
+ dev->rdev.stats.pbl.fail = 0;
dev->rdev.stats.rqt.max = 0;
+ dev->rdev.stats.rqt.fail = 0;
dev->rdev.stats.ocqp.max = 0;
+ dev->rdev.stats.ocqp.fail = 0;
dev->rdev.stats.db_full = 0;
dev->rdev.stats.db_empty = 0;
dev->rdev.stats.db_drop = 0;
@@ -350,8 +357,8 @@ void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
entry = list_entry(pos, struct c4iw_qid_list, entry);
list_del_init(&entry->entry);
if (!(entry->qid & rdev->qpmask)) {
- c4iw_put_resource(&rdev->resource.qid_fifo, entry->qid,
- &rdev->resource.qid_fifo_lock);
+ c4iw_put_resource(&rdev->resource.qid_table,
+ entry->qid);
mutex_lock(&rdev->stats.lock);
rdev->stats.qid.cur -= rdev->qpmask + 1;
mutex_unlock(&rdev->stats.lock);
diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c
new file mode 100644
index 0000000..f95e5df
--- /dev/null
+++ b/drivers/infiniband/hw/cxgb4/id_table.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2011 Chelsio Communications. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include "iw_cxgb4.h"
+
+#define RANDOM_SKIP 16
+
+/*
+ * Trivial bitmap-based allocator. If the random flag is set, the
+ * allocator is designed to:
+ * - pseudo-randomize the id returned such that it is not trivially predictable.
+ * - avoid reuse of recently used id (at the expense of predictability)
+ */
+u32 c4iw_id_alloc(struct c4iw_id_table *alloc)
+{
+ unsigned long flags;
+ u32 obj;
+
+ spin_lock_irqsave(&alloc->lock, flags);
+
+ obj = find_next_zero_bit(alloc->table, alloc->max, alloc->last);
+ if (obj >= alloc->max)
+ obj = find_first_zero_bit(alloc->table, alloc->max);
+
+ if (obj < alloc->max) {
+ if (alloc->flags & C4IW_ID_TABLE_F_RANDOM)
+ alloc->last += random32() % RANDOM_SKIP;
+ else
+ alloc->last = obj + 1;
+ if (alloc->last >= alloc->max)
+ alloc->last = 0;
+ set_bit(obj, alloc->table);
+ obj += alloc->start;
+ } else
+ obj = -1;
+
+ spin_unlock_irqrestore(&alloc->lock, flags);
+ return obj;
+}
+
+void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj)
+{
+ unsigned long flags;
+
+ obj -= alloc->start;
+ BUG_ON((int)obj < 0);
+
+ spin_lock_irqsave(&alloc->lock, flags);
+ clear_bit(obj, alloc->table);
+ spin_unlock_irqrestore(&alloc->lock, flags);
+}
+
+int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
+ u32 reserved, u32 flags)
+{
+ int i;
+
+ alloc->start = start;
+ alloc->flags = flags;
+ if (flags & C4IW_ID_TABLE_F_RANDOM)
+ alloc->last = random32() % RANDOM_SKIP;
+ else
+ alloc->last = 0;
+ alloc->max = num;
+ spin_lock_init(&alloc->lock);
+ alloc->table = kmalloc(BITS_TO_LONGS(num) * sizeof(long),
+ GFP_KERNEL);
+ if (!alloc->table)
+ return -ENOMEM;
+
+ bitmap_zero(alloc->table, num);
+ if (!(alloc->flags & C4IW_ID_TABLE_F_EMPTY))
+ for (i = 0; i < reserved; ++i)
+ set_bit(i, alloc->table);
+
+ return 0;
+}
+
+void c4iw_id_table_free(struct c4iw_id_table *alloc)
+{
+ kfree(alloc->table);
+}
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 6818659..2d5b06b 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -45,7 +45,6 @@
#include <linux/kref.h>
#include <linux/timer.h>
#include <linux/io.h>
-#include <linux/kfifo.h>
#include <asm/byteorder.h>
@@ -79,13 +78,22 @@ static inline void *cplhdr(struct sk_buff *skb)
return skb->data;
}
+#define C4IW_ID_TABLE_F_RANDOM 1 /* Pseudo-randomize the id's returned */
+#define C4IW_ID_TABLE_F_EMPTY 2 /* Table is initially empty */
+
+struct c4iw_id_table {
+ u32 flags;
+ u32 start; /* logical minimal id */
+ u32 last; /* hint for find */
+ u32 max;
+ spinlock_t lock;
+ unsigned long *table;
+};
+
struct c4iw_resource {
- struct kfifo tpt_fifo;
- spinlock_t tpt_fifo_lock;
- struct kfifo qid_fifo;
- spinlock_t qid_fifo_lock;
- struct kfifo pdid_fifo;
- spinlock_t pdid_fifo_lock;
+ struct c4iw_id_table tpt_table;
+ struct c4iw_id_table qid_table;
+ struct c4iw_id_table pdid_table;
};
struct c4iw_qid_list {
@@ -107,6 +115,7 @@ struct c4iw_stat {
u64 total;
u64 cur;
u64 max;
+ u64 fail;
};
struct c4iw_stats {
@@ -253,7 +262,7 @@ static inline int _insert_handle(struct c4iw_dev *rhp, struct idr *idr,
if (lock)
spin_lock_irq(&rhp->lock);
ret = idr_get_new_above(idr, handle, id, &newid);
- BUG_ON(newid != id);
+ BUG_ON(!ret && newid != id);
if (lock)
spin_unlock_irq(&rhp->lock);
} while (ret == -EAGAIN);
@@ -755,14 +764,20 @@ static inline int compute_wscale(int win)
return wscale;
}
+u32 c4iw_id_alloc(struct c4iw_id_table *alloc);
+void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj);
+int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
+ u32 reserved, u32 flags);
+void c4iw_id_table_free(struct c4iw_id_table *alloc);
+
typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb);
int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
struct l2t_entry *l2t);
void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid,
struct c4iw_dev_ucontext *uctx);
-u32 c4iw_get_resource(struct kfifo *fifo, spinlock_t *lock);
-void c4iw_put_resource(struct kfifo *fifo, u32 entry, spinlock_t *lock);
+u32 c4iw_get_resource(struct c4iw_id_table *id_table);
+void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry);
int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid);
int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev);
int c4iw_pblpool_create(struct c4iw_rdev *rdev);
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 2a87379..57e07c6 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -131,8 +131,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
stag_idx = (*stag) >> 8;
if ((!reset_tpt_entry) && (*stag == T4_STAG_UNSET)) {
- stag_idx = c4iw_get_resource(&rdev->resource.tpt_fifo,
- &rdev->resource.tpt_fifo_lock);
+ stag_idx = c4iw_get_resource(&rdev->resource.tpt_table);
if (!stag_idx)
return -ENOMEM;
mutex_lock(&rdev->stats.lock);
@@ -171,8 +170,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
sizeof(tpt), &tpt);
if (reset_tpt_entry) {
- c4iw_put_resource(&rdev->resource.tpt_fifo, stag_idx,
- &rdev->resource.tpt_fifo_lock);
+ c4iw_put_resource(&rdev->resource.tpt_table, stag_idx);
mutex_lock(&rdev->stats.lock);
rdev->stats.stag.cur -= 32;
mutex_unlock(&rdev->stats.lock);
@@ -695,8 +693,8 @@ int c4iw_dealloc_mw(struct ib_mw *mw)
mhp = to_c4iw_mw(mw);
rhp = mhp->rhp;
mmid = (mw->rkey) >> 8;
- deallocate_window(&rhp->rdev, mhp->attr.stag);
remove_handle(rhp, &rhp->mmidr, mmid);
+ deallocate_window(&rhp->rdev, mhp->attr.stag);
kfree(mhp);
PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
return 0;
@@ -798,12 +796,12 @@ int c4iw_dereg_mr(struct ib_mr *ib_mr)
mhp = to_c4iw_mr(ib_mr);
rhp = mhp->rhp;
mmid = mhp->attr.stag >> 8;
+ remove_handle(rhp, &rhp->mmidr, mmid);
dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
mhp->attr.pbl_addr);
if (mhp->attr.pbl_size)
c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
mhp->attr.pbl_size << 3);
- remove_handle(rhp, &rhp->mmidr, mmid);
if (mhp->kva)
kfree((void *) (unsigned long) mhp->kva);
if (mhp->umem)
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 8d58736..fe98a0a 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -188,8 +188,7 @@ static int c4iw_deallocate_pd(struct ib_pd *pd)
php = to_c4iw_pd(pd);
rhp = php->rhp;
PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
- c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid,
- &rhp->rdev.resource.pdid_fifo_lock);
+ c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
mutex_lock(&rhp->rdev.stats.lock);
rhp->rdev.stats.pd.cur--;
mutex_unlock(&rhp->rdev.stats.lock);
@@ -207,14 +206,12 @@ static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
PDBG("%s ibdev %p\n", __func__, ibdev);
rhp = (struct c4iw_dev *) ibdev;
- pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_fifo,
- &rhp->rdev.resource.pdid_fifo_lock);
+ pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table);
if (!pdid)
return ERR_PTR(-EINVAL);
php = kzalloc(sizeof(*php), GFP_KERNEL);
if (!php) {
- c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, pdid,
- &rhp->rdev.resource.pdid_fifo_lock);
+ c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
return ERR_PTR(-ENOMEM);
}
php->pdid = pdid;
diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 1b948d1..cdef4d7 100644
--- a/drivers/infiniband/hw/cxgb4/resource.c
+++ b/drivers/infiniband/hw/cxgb4/resource.c
@@ -30,96 +30,25 @@
* SOFTWARE.
*/
/* Crude resource management */
-#include <linux/kernel.h>
-#include <linux/random.h>
-#include <linux/slab.h>
-#include <linux/kfifo.h>
#include <linux/spinlock.h>
-#include <linux/errno.h>
#include <linux/genalloc.h>
#include <linux/ratelimit.h>
#include "iw_cxgb4.h"
-#define RANDOM_SIZE 16
-
-static int __c4iw_init_resource_fifo(struct kfifo *fifo,
- spinlock_t *fifo_lock,
- u32 nr, u32 skip_low,
- u32 skip_high,
- int random)
-{
- u32 i, j, entry = 0, idx;
- u32 random_bytes;
- u32 rarray[16];
- spin_lock_init(fifo_lock);
-
- if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL))
- return -ENOMEM;
-
- for (i = 0; i < skip_low + skip_high; i++)
- kfifo_in(fifo, (unsigned char *) &entry, sizeof(u32));
- if (random) {
- j = 0;
- random_bytes = random32();
- for (i = 0; i < RANDOM_SIZE; i++)
- rarray[i] = i + skip_low;
- for (i = skip_low + RANDOM_SIZE; i < nr - skip_high; i++) {
- if (j >= RANDOM_SIZE) {
- j = 0;
- random_bytes = random32();
- }
- idx = (random_bytes >> (j * 2)) & 0xF;
- kfifo_in(fifo,
- (unsigned char *) &rarray[idx],
- sizeof(u32));
- rarray[idx] = i;
- j++;
- }
- for (i = 0; i < RANDOM_SIZE; i++)
- kfifo_in(fifo,
- (unsigned char *) &rarray[i],
- sizeof(u32));
- } else
- for (i = skip_low; i < nr - skip_high; i++)
- kfifo_in(fifo, (unsigned char *) &i, sizeof(u32));
-
- for (i = 0; i < skip_low + skip_high; i++)
- if (kfifo_out_locked(fifo, (unsigned char *) &entry,
- sizeof(u32), fifo_lock))
- break;
- return 0;
-}
-
-static int c4iw_init_resource_fifo(struct kfifo *fifo, spinlock_t * fifo_lock,
- u32 nr, u32 skip_low, u32 skip_high)
-{
- return __c4iw_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
- skip_high, 0);
-}
-
-static int c4iw_init_resource_fifo_random(struct kfifo *fifo,
- spinlock_t *fifo_lock,
- u32 nr, u32 skip_low, u32 skip_high)
-{
- return __c4iw_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
- skip_high, 1);
-}
-
-static int c4iw_init_qid_fifo(struct c4iw_rdev *rdev)
+static int c4iw_init_qid_table(struct c4iw_rdev *rdev)
{
u32 i;
- spin_lock_init(&rdev->resource.qid_fifo_lock);
-
- if (kfifo_alloc(&rdev->resource.qid_fifo, rdev->lldi.vr->qp.size *
- sizeof(u32), GFP_KERNEL))
+ if (c4iw_id_table_alloc(&rdev->resource.qid_table,
+ rdev->lldi.vr->qp.start,
+ rdev->lldi.vr->qp.size,
+ rdev->lldi.vr->qp.size, 0))
return -ENOMEM;
for (i = rdev->lldi.vr->qp.start;
- i < rdev->lldi.vr->qp.start + rdev->lldi.vr->qp.size; i++)
+ i < rdev->lldi.vr->qp.start + rdev->lldi.vr->qp.size; i++)
if (!(i & rdev->qpmask))
- kfifo_in(&rdev->resource.qid_fifo,
- (unsigned char *) &i, sizeof(u32));
+ c4iw_id_free(&rdev->resource.qid_table, i);
return 0;
}
@@ -127,44 +56,42 @@ static int c4iw_init_qid_fifo(struct c4iw_rdev *rdev)
int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid)
{
int err = 0;
- err = c4iw_init_resource_fifo_random(&rdev->resource.tpt_fifo,
- &rdev->resource.tpt_fifo_lock,
- nr_tpt, 1, 0);
+ err = c4iw_id_table_alloc(&rdev->resource.tpt_table, 0, nr_tpt, 1,
+ C4IW_ID_TABLE_F_RANDOM);
if (err)
goto tpt_err;
- err = c4iw_init_qid_fifo(rdev);
+ err = c4iw_init_qid_table(rdev);
if (err)
goto qid_err;
- err = c4iw_init_resource_fifo(&rdev->resource.pdid_fifo,
- &rdev->resource.pdid_fifo_lock,
- nr_pdid, 1, 0);
+ err = c4iw_id_table_alloc(&rdev->resource.pdid_table, 0,
+ nr_pdid, 1, 0);
if (err)
goto pdid_err;
return 0;
-pdid_err:
- kfifo_free(&rdev->resource.qid_fifo);
-qid_err:
- kfifo_free(&rdev->resource.tpt_fifo);
-tpt_err:
+ pdid_err:
+ c4iw_id_table_free(&rdev->resource.qid_table);
+ qid_err:
+ c4iw_id_table_free(&rdev->resource.tpt_table);
+ tpt_err:
return -ENOMEM;
}
/*
* returns 0 if no resource available
*/
-u32 c4iw_get_resource(struct kfifo *fifo, spinlock_t *lock)
+u32 c4iw_get_resource(struct c4iw_id_table *id_table)
{
u32 entry;
- if (kfifo_out_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock))
- return entry;
- else
+ entry = c4iw_id_alloc(id_table);
+ if (entry == (u32)(-1))
return 0;
+ return entry;
}
-void c4iw_put_resource(struct kfifo *fifo, u32 entry, spinlock_t *lock)
+void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry)
{
PDBG("%s entry 0x%x\n", __func__, entry);
- kfifo_in_locked(fifo, (unsigned char *) &entry, sizeof(u32), lock);
+ c4iw_id_free(id_table, entry);
}
u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
@@ -181,8 +108,7 @@ u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
qid = entry->qid;
kfree(entry);
} else {
- qid = c4iw_get_resource(&rdev->resource.qid_fifo,
- &rdev->resource.qid_fifo_lock);
+ qid = c4iw_get_resource(&rdev->resource.qid_table);
if (!qid)
goto out;
mutex_lock(&rdev->stats.lock);
@@ -252,8 +178,7 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
qid = entry->qid;
kfree(entry);
} else {
- qid = c4iw_get_resource(&rdev->resource.qid_fifo,
- &rdev->resource.qid_fifo_lock);
+ qid = c4iw_get_resource(&rdev->resource.qid_table);
if (!qid)
goto out;
mutex_lock(&rdev->stats.lock);
@@ -311,9 +236,9 @@ void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
void c4iw_destroy_resource(struct c4iw_resource *rscp)
{
- kfifo_free(&rscp->tpt_fifo);
- kfifo_free(&rscp->qid_fifo);
- kfifo_free(&rscp->pdid_fifo);
+ c4iw_id_table_free(&rscp->tpt_table);
+ c4iw_id_table_free(&rscp->qid_table);
+ c4iw_id_table_free(&rscp->pdid_table);
}
/*
@@ -326,16 +251,14 @@ u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size)
{
unsigned long addr = gen_pool_alloc(rdev->pbl_pool, size);
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
- if (!addr)
- printk_ratelimited(KERN_WARNING MOD "%s: Out of PBL memory\n",
- pci_name(rdev->lldi.pdev));
+ mutex_lock(&rdev->stats.lock);
if (addr) {
- mutex_lock(&rdev->stats.lock);
rdev->stats.pbl.cur += roundup(size, 1 << MIN_PBL_SHIFT);
if (rdev->stats.pbl.cur > rdev->stats.pbl.max)
rdev->stats.pbl.max = rdev->stats.pbl.cur;
- mutex_unlock(&rdev->stats.lock);
- }
+ } else
+ rdev->stats.pbl.fail++;
+ mutex_unlock(&rdev->stats.lock);
return (u32)addr;
}
@@ -401,13 +324,14 @@ u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size)
if (!addr)
printk_ratelimited(KERN_WARNING MOD "%s: Out of RQT memory\n",
pci_name(rdev->lldi.pdev));
+ mutex_lock(&rdev->stats.lock);
if (addr) {
- mutex_lock(&rdev->stats.lock);
rdev->stats.rqt.cur += roundup(size << 6, 1 << MIN_RQT_SHIFT);
if (rdev->stats.rqt.cur > rdev->stats.rqt.max)
rdev->stats.rqt.max = rdev->stats.rqt.cur;
- mutex_unlock(&rdev->stats.lock);
- }
+ } else
+ rdev->stats.rqt.fail++;
+ mutex_unlock(&rdev->stats.lock);
return (u32)addr;
}
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists