net/mlx4_core: Modify port values when generting EQEs for VFs

As part of enabling single ported VFs over IB ports we need to handle
some of the flows for generting EQ events for VFs which don't come
into play under Eth ports.

This mainly includes port management events derived from changes of the
phyiscal port (lid change, client re-register, down/up, etc), VF pkey table
changes and VF guid changes initiated by the IB driver.

(1) make sure that events are generated only for VFs sitting on
    the relevant physical port (under the ALL_SLAVES flow).

(2) before generating the event, convert from physical (one or two)
    to VF port (always equals one).

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index 0f00204d2ece..21cb41a60fe8 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -189,7 +189,7 @@ void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
 {
         int i;
         u64 guid_indexes;
-        int slave_id;
+        int slave_id, slave_port;
         enum slave_port_state new_state;
         enum slave_port_state prev_state;
         __be64 tmp_cur_ag, form_cache_ag;
@@ -217,6 +217,11 @@ void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
                 slave_id = (block_num * NUM_ALIAS_GUID_IN_REC) + i ;
                 if (slave_id >= dev->dev->persist->num_vfs + 1)
                         return;
+
+                slave_port = mlx4_phys_to_slave_port(dev->dev, slave_id, port_num);
+                if (slave_port < 0) /* this port isn't available for the VF */
+                        continue;
+
                 tmp_cur_ag = *(__be64 *)&p_data[i * GUID_REC_SIZE];
                 form_cache_ag = get_cached_alias_guid(dev, port_num,
                                         (NUM_ALIAS_GUID_IN_REC * block_num) + i);