Files
linux/include/net
Xin Long 0fc2ea922c sctp: implement validate_ftsn for sctp_stream_interleave
validate_ftsn is added as a member of sctp_stream_interleave, used to
validate ssn/chunk type for fwdtsn or mid (message id)/chunk type for
ifwdtsn, called in sctp_sf_eat_fwd_tsn, just as validate_data.

If this check fails, an abort packet will be sent, as said in section
2.3.1 of RFC8260.

As ifwdtsn and fwdtsn chunks have different length, it also defines
ftsn_chunk_len for sctp_stream_interleave to describe the chunk size.
Then it replaces all sizeof(struct sctp_fwdtsn_chunk) with
sctp_ftsnchk_len.

It also adds the process for ifwdtsn in rx path. As Marcelo pointed
out, there's no need to add event table for ifwdtsn, but just share
prsctp_chunk_event_table with fwdtsn's. It would drop fwdtsn chunk
for ifwdtsn and drop ifwdtsn chunk for fwdtsn by calling validate_ftsn
in sctp_sf_eat_fwd_tsn.

After this patch, the ifwdtsn can be accepted.

Note that this patch also removes the sctp.intl_enable check for
idata chunks in sctp_chunk_event_lookup, as it will do this check
in validate_data later.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo R. Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-15 13:52:22 -05:00
..
2017-07-11 06:08:58 -04:00
2017-04-05 10:15:20 +02:00
2017-08-31 14:42:19 -07:00
2017-11-30 09:54:27 -05:00
2017-10-11 09:49:34 +02:00
2017-11-16 10:49:00 +09:00
2017-12-15 12:34:00 -05:00
2017-09-29 06:19:32 +01:00
2016-10-03 02:00:22 -04:00
2017-11-08 16:12:33 +09:00
2017-12-05 14:37:13 -05:00
2017-12-04 11:32:53 -05:00
2017-12-13 15:10:57 -05:00