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path: root/drivers/infiniband/core/cache.c
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Diffstat (limited to 'drivers/infiniband/core/cache.c')
-rw-r--r--drivers/infiniband/core/cache.c99
1 files changed, 85 insertions, 14 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index c57a3871184..80f6cf2449f 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -31,14 +31,12 @@
* 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.
- *
- * $Id: cache.c 1349 2004-12-16 21:09:43Z roland $
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/slab.h>
-#include <linux/sched.h> /* INIT_WORK, schedule_work(), flush_scheduled_work() */
+#include <linux/workqueue.h>
#include <rdma/ib_cache.h>
@@ -62,12 +60,13 @@ struct ib_update_work {
static inline int start_port(struct ib_device *device)
{
- return device->node_type == IB_NODE_SWITCH ? 0 : 1;
+ return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1;
}
static inline int end_port(struct ib_device *device)
{
- return device->node_type == IB_NODE_SWITCH ? 0 : device->phys_port_cnt;
+ return (device->node_type == RDMA_NODE_IB_SWITCH) ?
+ 0 : device->phys_port_cnt;
}
int ib_get_cached_gid(struct ib_device *device,
@@ -168,6 +167,7 @@ int ib_find_cached_pkey(struct ib_device *device,
unsigned long flags;
int i;
int ret = -ENOENT;
+ int partial_ix = -1;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
@@ -180,6 +180,46 @@ int ib_find_cached_pkey(struct ib_device *device,
for (i = 0; i < cache->table_len; ++i)
if ((cache->table[i] & 0x7fff) == (pkey & 0x7fff)) {
+ if (cache->table[i] & 0x8000) {
+ *index = i;
+ ret = 0;
+ break;
+ } else
+ partial_ix = i;
+ }
+
+ if (ret && partial_ix >= 0) {
+ *index = partial_ix;
+ ret = 0;
+ }
+
+ read_unlock_irqrestore(&device->cache.lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_find_cached_pkey);
+
+int ib_find_exact_cached_pkey(struct ib_device *device,
+ u8 port_num,
+ u16 pkey,
+ u16 *index)
+{
+ struct ib_pkey_cache *cache;
+ unsigned long flags;
+ int i;
+ int ret = -ENOENT;
+
+ if (port_num < start_port(device) || port_num > end_port(device))
+ return -EINVAL;
+
+ read_lock_irqsave(&device->cache.lock, flags);
+
+ cache = device->cache.pkey_cache[port_num - start_port(device)];
+
+ *index = -1;
+
+ for (i = 0; i < cache->table_len; ++i)
+ if (cache->table[i] == pkey) {
*index = i;
ret = 0;
break;
@@ -189,7 +229,25 @@ int ib_find_cached_pkey(struct ib_device *device,
return ret;
}
-EXPORT_SYMBOL(ib_find_cached_pkey);
+EXPORT_SYMBOL(ib_find_exact_cached_pkey);
+
+int ib_get_cached_lmc(struct ib_device *device,
+ u8 port_num,
+ u8 *lmc)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ if (port_num < start_port(device) || port_num > end_port(device))
+ return -EINVAL;
+
+ read_lock_irqsave(&device->cache.lock, flags);
+ *lmc = device->cache.lmc_cache[port_num - start_port(device)];
+ read_unlock_irqrestore(&device->cache.lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_get_cached_lmc);
static void ib_cache_update(struct ib_device *device,
u8 port)
@@ -251,6 +309,8 @@ static void ib_cache_update(struct ib_device *device,
device->cache.pkey_cache[port - start_port(device)] = pkey_cache;
device->cache.gid_cache [port - start_port(device)] = gid_cache;
+ device->cache.lmc_cache[port - start_port(device)] = tprops->lmc;
+
write_unlock_irq(&device->cache.lock);
kfree(old_pkey_cache);
@@ -264,9 +324,10 @@ err:
kfree(tprops);
}
-static void ib_cache_task(void *work_ptr)
+static void ib_cache_task(struct work_struct *_work)
{
- struct ib_update_work *work = work_ptr;
+ struct ib_update_work *work =
+ container_of(_work, struct ib_update_work, work);
ib_cache_update(work->device, work->port_num);
kfree(work);
@@ -281,13 +342,15 @@ static void ib_cache_event(struct ib_event_handler *handler,
event->event == IB_EVENT_PORT_ACTIVE ||
event->event == IB_EVENT_LID_CHANGE ||
event->event == IB_EVENT_PKEY_CHANGE ||
- event->event == IB_EVENT_SM_CHANGE) {
+ event->event == IB_EVENT_SM_CHANGE ||
+ event->event == IB_EVENT_CLIENT_REREGISTER ||
+ event->event == IB_EVENT_GID_CHANGE) {
work = kmalloc(sizeof *work, GFP_ATOMIC);
if (work) {
- INIT_WORK(&work->work, ib_cache_task, work);
+ INIT_WORK(&work->work, ib_cache_task);
work->device = event->device;
work->port_num = event->element.port_num;
- schedule_work(&work->work);
+ queue_work(ib_wq, &work->work);
}
}
}
@@ -302,10 +365,16 @@ static void ib_cache_setup_one(struct ib_device *device)
kmalloc(sizeof *device->cache.pkey_cache *
(end_port(device) - start_port(device) + 1), GFP_KERNEL);
device->cache.gid_cache =
- kmalloc(sizeof *device->cache.pkey_cache *
+ kmalloc(sizeof *device->cache.gid_cache *
(end_port(device) - start_port(device) + 1), GFP_KERNEL);
- if (!device->cache.pkey_cache || !device->cache.gid_cache) {
+ device->cache.lmc_cache = kmalloc(sizeof *device->cache.lmc_cache *
+ (end_port(device) -
+ start_port(device) + 1),
+ GFP_KERNEL);
+
+ if (!device->cache.pkey_cache || !device->cache.gid_cache ||
+ !device->cache.lmc_cache) {
printk(KERN_WARNING "Couldn't allocate cache "
"for %s\n", device->name);
goto err;
@@ -333,6 +402,7 @@ err_cache:
err:
kfree(device->cache.pkey_cache);
kfree(device->cache.gid_cache);
+ kfree(device->cache.lmc_cache);
}
static void ib_cache_cleanup_one(struct ib_device *device)
@@ -340,7 +410,7 @@ static void ib_cache_cleanup_one(struct ib_device *device)
int p;
ib_unregister_event_handler(&device->cache.event_handler);
- flush_scheduled_work();
+ flush_workqueue(ib_wq);
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
kfree(device->cache.pkey_cache[p]);
@@ -349,6 +419,7 @@ static void ib_cache_cleanup_one(struct ib_device *device)
kfree(device->cache.pkey_cache);
kfree(device->cache.gid_cache);
+ kfree(device->cache.lmc_cache);
}
static struct ib_client cache_client = {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:54:21 +0000