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| author |   Jack Morgenstein <jackm@dev.mellanox.co.il> | 2012-08-03 08:40:49 +0000 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2012-09-30 20:33:37 -0700 |
| commit | a0c64a17aba88c29d55ba989b96ac6ccb1268f0a (patch) | |
| tree | d76bf21edb1e70104a08c1bad21a566f2204e840 /drivers/net/ethernet/mellanox/mlx4/cmd.c | |
| parent | mlx4_core: Add IB port-state machine and port mgmt event propagation (diff) | |
| download | linux-dev-a0c64a17aba88c29d55ba989b96ac6ccb1268f0a.tar.xz linux-dev-a0c64a17aba88c29d55ba989b96ac6ccb1268f0a.zip | |
mlx4: Add alias_guid mechanism
For IB ports, we paravirtualize the GUID at index 0 on slaves. The
GUID at index 0 seen by a slave is the actual GUID occupying the GUID
table at the slave-id index.
The driver, by default, requests at startup time that subnet manager
populate its entire guid table with GUIDs. These guids are then mapped
(paravirtualized) to the slaves, and appear for each slave as its GUID
at index 0.
Until each slave has such a guid, its port status is DOWN.
The guid table is cached to support special QP paravirtualization, and
event propagation to slaves on guid change (we test to see if the guid
really changed before propagating an event to the slave).
To support this caching, add capability to __mlx4_ib_query_gid() to
obtain the network view (i.e., physical view) gid at index X, not just
the host (paravirtualized) view.
Based on a patch from Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/cmd.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index a13d8a69b3bc..ea5c884ab899 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -674,8 +674,10 @@ static int get_full_pkey_table(struct mlx4_dev *dev, u8 port, u16 *table, static enum ib_port_state vf_port_state(struct mlx4_dev *dev, int port, int vf) { - /* will be modified when add alias_guid feature */ - return IB_PORT_DOWN; + if (mlx4_get_slave_port_state(dev, vf, port) == SLAVE_PORT_UP) + return IB_PORT_ACTIVE; + else + return IB_PORT_DOWN; } static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave, |