net/mlx4_en: Implement mcast loopback prevention for ETH qps

Browse source

Set the mcast loopback prevention bit in the QPC for ETH MLX QPs (not
RSS QPs), when the firmware supports this feature. In addition, all rx
ring QPs need to be updated in order not to enforce loopback checks.
This prevents getting packets we sent both from the network stack and
the HCA. Loopback prevention is done by comparing the counter indices of
the sent and receiving QPs. If they're equal, packets aren't
loopback-ed.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

This commit is contained in:

Maor Gottlieb 2015-10-15 14:44:39 +03:00 • committed by Doug Ledford

parent 9a89283597

commit 74194fb9c8

3 changed files with 49 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

22

drivers/net/ethernet/mellanox/mlx4/en_main.c

View file

25

drivers/net/ethernet/mellanox/mlx4/en_resources.c

View file

3

drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

View file