diff options
| author |   Jack Morgenstein <jackm@mellanox.co.il> | 2006-06-17 20:37:34 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2006-06-17 20:37:34 -0700 |
| commit | 6fb9cdbf2cdb2ea187e57ec2e16cc59df2adf86a (patch) | |
| tree | 329eb272835bd3105696ddbc60cdaea971aa2a6e /drivers/infiniband/core/cache.c | |
| parent | IB/cm: remove unneeded flush_workqueue (diff) | |
| download | linux-dev-6fb9cdbf2cdb2ea187e57ec2e16cc59df2adf86a.tar.xz linux-dev-6fb9cdbf2cdb2ea187e57ec2e16cc59df2adf86a.zip | |
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/core/cache.c')
| -rw-r--r-- | drivers/infiniband/core/cache.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 50364c0b090c..e05ca2cdc73f 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 = { |