diff options
| author | Saeed Mahameed <saeedm@mellanox.com> | 2019-05-23 12:55:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-04 08:02:33 +0200 |
| commit | 1db0bcc27c78e9b28ca02bf39d645adf0c1acd76 (patch) | |
| tree | a95aa3f03d03fa7bc826fa457ff53d07fcde5c9d /include | |
| parent | e0d95806b05d2cf0fe90707596a00b239fc8d69e (diff) | |
net/mlx5e: Disable rxhash when CQE compress is enabled
[ Upstream commit c0194e2d0ef0e5ce5e21a35640d23a706827ae28 ]
When CQE compression is enabled (Multi-host systems), compressed CQEs
might arrive to the driver rx, compressed CQEs don't have a valid hash
offload and the driver already reports a hash value of 0 and invalid hash
type on the skb for compressed CQEs, but this is not good enough.
On a congested PCIe, where CQE compression will kick in aggressively,
gro will deliver lots of out of order packets due to the invalid hash
and this might cause a serious performance drop.
The only valid solution, is to disable rxhash offload at all when CQE
compression is favorable (Multi-host systems).
Fixes: 7219ab34f184 ("net/mlx5e: CQE compression")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions