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authorFan Du <fan.du@windriver.com>2013-10-15 22:01:30 -0400
committerDavid S. Miller <davem@davemloft.net>2013-10-17 15:24:44 -0400
commit27127a82561a2a3ed955ce207048e1b066a80a2a (patch)
treeabb0407fc9c944151ddbbf8989a89a729a9c8811 /net
parente87b3998d795123b4139bc3f25490dd236f68212 (diff)
downloadlinux-27127a82561a2a3ed955ce207048e1b066a80a2a.tar.gz
sctp: Use software crc32 checksum when xfrm transform will happen.
igb/ixgbe have hardware sctp checksum support, when this feature is enabled and also IPsec is armed to protect sctp traffic, ugly things happened as xfrm_output checks CHECKSUM_PARTIAL to do checksum operation(sum every thing up and pack the 16bits result in the checksum field). The result is fail establishment of sctp communication. Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Fan Du <fan.du@windriver.com> Signed-off-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/output.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 0ac3a65dacc..d35b54cb302 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -536,7 +536,8 @@ int sctp_packet_transmit(struct sctp_packet *packet)
* by CRC32-C as described in <draft-ietf-tsvwg-sctpcsum-02.txt>.
*/
if (!sctp_checksum_disable) {
- if (!(dst->dev->features & NETIF_F_SCTP_CSUM)) {
+ if (!(dst->dev->features & NETIF_F_SCTP_CSUM) ||
+ (dst_xfrm(dst) != NULL)) {
__u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
/* 3) Put the resultant value into the checksum field in the