gso: Validate assumption of frag_list segementation
Commit 07b26c94 ("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: 07b26c94 ("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>
parent
edb12f2d
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