net/mlx5e: Rx, Fixup skb checksum for packets with tail padding

Browse source

When an ethernet frame with ip payload is padded, the padding octets are
not covered by the hardware checksum.

Prior to the cited commit, skb checksum was forced to be CHECKSUM_NONE
when padding is detected. After it, the kernel will try to trim the
padding bytes and subtract their checksum from skb->csum.

In this patch we fixup skb->csum for any ip packet with tail padding of
any size, if any padding found.
FCS case is just one special case of this general purpose patch, hence,
it is removed.

Fixes: 88078d98d1 ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"),
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

...

This commit is contained in:

Saeed Mahameed 2019-03-12 00:24:52 -07:00

parent 5d0bb3bac4

commit 0aa1d18615

3 changed files with 74 additions and 15 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

79

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

View file

6

drivers/net/ethernet/mellanox/mlx5/core/en_stats.c

View file

4

drivers/net/ethernet/mellanox/mlx5/core/en_stats.h

View file