diff options
| author | Tom Herbert <therbert@google.com> | 2014-08-27 21:27:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-29 20:41:11 -0700 |
| commit | 202863fe4c7a5b0b9a3d3a00d207691635b31930 (patch) | |
| tree | d0217817dc2282297e6e59fe875480e64b92901e /net/sctp/input.c | |
| parent | 662880f4420340aad4f9a62a349c6c9d4faa1a5d (diff) | |
| download | lwn-202863fe4c7a5b0b9a3d3a00d207691635b31930.tar.gz lwn-202863fe4c7a5b0b9a3d3a00d207691635b31930.zip | |
sctp: Change sctp to implement csum_levels
CHECKSUM_UNNECESSARY may be applied to the SCTP CRC so we need to
appropriate account for this by decrementing csum_level. This is
done by calling __skb_dec_checksum_unnecessary.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/input.c')
| -rw-r--r-- | net/sctp/input.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c index c1b991294516..b6493b3f11a9 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -133,9 +133,13 @@ int sctp_rcv(struct sk_buff *skb) __skb_pull(skb, skb_transport_offset(skb)); if (skb->len < sizeof(struct sctphdr)) goto discard_it; - if (!sctp_checksum_disable && !skb_csum_unnecessary(skb) && - sctp_rcv_checksum(net, skb) < 0) + + skb->csum_valid = 0; /* Previous value not applicable */ + if (skb_csum_unnecessary(skb)) + __skb_decr_checksum_unnecessary(skb); + else if (!sctp_checksum_disable && sctp_rcv_checksum(net, skb) < 0) goto discard_it; + skb->csum_valid = 1; skb_pull(skb, sizeof(struct sctphdr)); |