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authorJack Morgenstein <jackm@mellanox.co.il>2006-06-17 20:37:34 -0700
committerRoland Dreier <rolandd@cisco.com>2006-06-17 20:37:34 -0700
commit6fb9cdbf2cdb2ea187e57ec2e16cc59df2adf86a (patch)
tree329eb272835bd3105696ddbc60cdaea971aa2a6e /drivers/infiniband
parent856c256f883f027a14b546164294b4a86fea81a4 (diff)
IB: Add caching of ports' LMC
Add an LMC cache to struct ib_device, and add a function ib_get_cached_lmc() to query the cache. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/cache.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 50364c0b090..e05ca2cdc73 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -191,6 +191,24 @@ int ib_find_cached_pkey(struct ib_device *device,
}
EXPORT_SYMBOL(ib_find_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 +269,8 @@ 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);
@@ -305,7 +325,13 @@ static void ib_cache_setup_one(struct ib_device *device)
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 +359,7 @@ 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)
@@ -349,6 +376,7 @@ 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 = {