veth: Avoid drops by oversized packets when XDP is enabled

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Oversized packets including GSO packets can be dropped if XDP is
enabled on receiver side, so don't send such packets from peer.

Drop TSO and SCTP fragmentation features so that veth devices themselves
segment packets with XDP enabled. Also cap MTU accordingly.

v4:
- Don't auto-adjust MTU but cap max MTU.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Toshiaki Makita 2018-08-03 16:58:11 +09:00 • committed by Daniel Borkmann

parent 948d4f214f

commit dc2248220a

1 changed files with 45 additions and 2 deletions

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47

drivers/net/veth.c

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