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| author | Jack Morgenstein <jackm@dev.mellanox.co.il> | 2012-08-03 08:40:39 +0000 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-09-30 20:33:30 -0700 |
| commit | 73aaa7418f8069103ca56fc620b3cd16c5a37d6e (patch) | |
| tree | 0110a685c949f7ce92e804ddff1cf6f34482d152 /include/rdma | |
| parent | ff7166c447df23a61e4f51bf748319dc6728dc74 (diff) | |
| download | linux-73aaa7418f8069103ca56fc620b3cd16c5a37d6e.tar.bz2 | |
IB/core: Add ib_find_exact_cached_pkey()
When P_Key tables potentially contain both full and partial membership
copies for the same P_Key, we need a function to find the index for an
exact (16-bit) P_Key.
This is necessary when the master forwards QP1 MADs sent by guests.
If the guest has sent the MAD with a limited membership P_Key, we need
to to forward the MAD using the same limited membership P_Key. Since
the master may have both the limited and the full member P_Keys in its
table, we must make sure to retrieve the limited membership P_Key in
this case.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_cache.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/rdma/ib_cache.h b/include/rdma/ib_cache.h index 00a2b8ec327f..ad9a3c280944 100644 --- a/include/rdma/ib_cache.h +++ b/include/rdma/ib_cache.h @@ -101,6 +101,22 @@ int ib_find_cached_pkey(struct ib_device *device, u16 *index); /** + * ib_find_exact_cached_pkey - Returns the PKey table index where a specified + * PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit) + * @device: The device to query. + * @port_num: The port number of the device to search for the PKey. + * @pkey: The PKey value to search for. + * @index: The index into the cached PKey table where the PKey was found. + * + * ib_find_exact_cached_pkey() searches the specified PKey table in + * the local software cache. + */ +int ib_find_exact_cached_pkey(struct ib_device *device, + u8 port_num, + u16 pkey, + u16 *index); + +/** * ib_get_cached_lmc - Returns a cached lmc table entry * @device: The device to query. * @port_num: The port number of the device to query. |