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author | Ilan Tayari <ilant@mellanox.com> | 2017-04-16 11:00:07 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2017-04-17 15:31:29 -0400 |
commit | 7a7a9bd7aceea77dc2397bc58a1e88197ed759cb (patch) | |
tree | 92bc398c76521edd68455b435930cd80ea57546c /net/ipv4/devinet.c | |
parent | edb12f2d72d735acfb3aa53bbda64b1827042209 (diff) | |
download | op-kernel-dev-7a7a9bd7aceea77dc2397bc58a1e88197ed759cb.zip op-kernel-dev-7a7a9bd7aceea77dc2397bc58a1e88197ed759cb.tar.gz |
gso: Validate assumption of frag_list segementation
Commit 07b26c9454a2 ("gso: Support partial splitting at the frag_list
pointer") assumes that all SKBs in a frag_list (except maybe the last
one) contain the same amount of GSO payload.
This assumption is not always correct, resulting in the following
warning message in the log:
skb_segment: too many frags
For example, mlx5 driver in Striding RQ mode creates some RX SKBs with
one frag, and some with 2 frags.
After GRO, the frag_list SKBs end up having different amounts of payload.
If this frag_list SKB is then forwarded, the aforementioned assumption
is violated.
Validate the assumption, and fall back to software GSO if it not true.
Fixes: 07b26c9454a2 ("gso: Support partial splitting at the frag_list pointer")
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
0 files changed, 0 insertions, 0 deletions