提交 d15c9ede 编写于 作者: X Xin Long 提交者: 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: NJulian Cordes <julian.cordes@gmail.com>
Signed-off-by: NXin Long <lucien.xin@gmail.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 3bc32d03
......@@ -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);
}
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. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
......@@ -3935,6 +3938,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast(
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. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
......
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