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RDMA/core: export ib_get_cached_port_state 

Export function for rdma_cm, patch for rdma_cm to follow.

Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Michael Wang <yun.wang@profitbricks.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Jack Wang 2017-01-02 13:19:24 +01:00 committed by Doug Ledford
parent aaaca121c7
commit 9e2c3f1c7f
2 changed files with 31 additions and 0 deletions
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18
drivers/infiniband/core/cache.c
View File

@ -1021,6 +1021,24 @@ int ib_get_cached_lmc(struct ib_device *device,
}
EXPORT_SYMBOL(ib_get_cached_lmc);
int ib_get_cached_port_state(struct ib_device *device,
u8 port_num,
enum ib_port_state *port_state)
{
unsigned long flags;
int ret = 0;
if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
*port_state = device->cache.port_state_cache[port_num - rdma_start_port(device)];
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
EXPORT_SYMBOL(ib_get_cached_port_state);
static void ib_cache_update(struct ib_device *device,
u8 port)
{

13
include/rdma/ib_cache.h
View File

@ -165,4 +165,17 @@ int ib_get_cached_lmc(struct ib_device *device,
u8 port_num,
u8 *lmc);
/**
* ib_get_cached_port_state - Returns a cached port state table entry
* @device: The device to query.
* @port_num: The port number of the device to query.
* @port_state: port_state for the specified port for that device.
*
* ib_get_cached_port_state() fetches the specified port_state table entry stored in
* the local software cache.
*/
int ib_get_cached_port_state(struct ib_device *device,
u8 port_num,
enum ib_port_state *port_active);
#endif /* _IB_CACHE_H */