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| author | Xin Long <lucien.xin@gmail.com> | 2017-02-03 17:37:06 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-06 11:57:15 -0500 |
| commit | d15c9ede6123dbce14c17eb9ced229e488002735 (patch) | |
| tree | d887e8b7b88852113924a35bf7025a6eb06ff5bc /net | |
| parent | 3bc32d0396d2a7214cb1d758df129bb781f7aa14 (diff) | |
| download | linux-d15c9ede6123dbce14c17eb9ced229e488002735.tar.gz linux-d15c9ede6123dbce14c17eb9ced229e488002735.tar.bz2 linux-d15c9ede6123dbce14c17eb9ced229e488002735.zip | |
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: Julian Cordes <julian.cordes@gmail.com>
Signed-off-by: Xin Long <lucien.xin@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/sm_statefuns.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 782e579472c9..d8798ddda726 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -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, |