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| author | Davide Caratti <dcaratti@redhat.com> | 2017-03-23 10:39:40 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-23 17:40:33 -0700 |
| commit | add641e7dee31b36aee83412c29e39dd1f5e0c9c (patch) | |
| tree | 3e571e30111d4b8898885e0772fbc5d98595542e /net/key | |
| parent | 67ff2c71bbf21fae0f63b367f252653c4abc3b12 (diff) | |
| download | linux-add641e7dee31b36aee83412c29e39dd1f5e0c9c.tar.gz linux-add641e7dee31b36aee83412c29e39dd1f5e0c9c.tar.bz2 linux-add641e7dee31b36aee83412c29e39dd1f5e0c9c.zip | |
sched: act_csum: don't mangle TCP and UDP GSO packets
after act_csum computes the checksum on skbs carrying GSO TCP/UDP packets,
subsequent segmentation fails because skb_needs_check(skb, true) returns
true. Because of that, skb_warn_bad_offload() is invoked and the following
message is displayed:
WARNING: CPU: 3 PID: 28 at net/core/dev.c:2553 skb_warn_bad_offload+0xf0/0xfd
<...>
[<ffffffff8171f486>] skb_warn_bad_offload+0xf0/0xfd
[<ffffffff8161304c>] __skb_gso_segment+0xec/0x110
[<ffffffff8161340d>] validate_xmit_skb+0x12d/0x2b0
[<ffffffff816135d2>] validate_xmit_skb_list+0x42/0x70
[<ffffffff8163c560>] sch_direct_xmit+0xd0/0x1b0
[<ffffffff8163c760>] __qdisc_run+0x120/0x270
[<ffffffff81613b3d>] __dev_queue_xmit+0x23d/0x690
[<ffffffff81613fa0>] dev_queue_xmit+0x10/0x20
Since GSO is able to compute checksum on individual segments of such skbs,
we can simply skip mangling the packet.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/key')
0 files changed, 0 insertions, 0 deletions