Commit d15c9ede authored by Xin Long's avatar Xin Long Committed by David S. Miller

sctp: process fwd tsn chunk only when prsctp is enabled

This patch is to check if asoc->peer.prsctp_capable is set before
processing fwd tsn chunk, if not, it will return an ERROR to the
peer, just as rfc3758 section 3.3.1 demands.
Reported-by: default avatarJulian Cordes <julian.cordes@gmail.com>
Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3bc32d03
...@@ -3867,6 +3867,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(struct net *net, ...@@ -3867,6 +3867,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(struct net *net,
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands); return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
} }
if (!asoc->peer.prsctp_capable)
return sctp_sf_unk_chunk(net, ep, asoc, type, arg, commands);
/* Make sure that the FORWARD_TSN chunk has valid length. */ /* Make sure that the FORWARD_TSN chunk has valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk))) if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg, return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
...@@ -3935,6 +3938,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast( ...@@ -3935,6 +3938,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast(
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands); return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
} }
if (!asoc->peer.prsctp_capable)
return sctp_sf_unk_chunk(net, ep, asoc, type, arg, commands);
/* Make sure that the FORWARD_TSN chunk has a valid length. */ /* Make sure that the FORWARD_TSN chunk has a valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk))) if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg, return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment