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| author |   Wei Yongjun <yjwei@cn.fujitsu.com> | 2009-11-23 15:53:53 -0500 |
|---|---|---|
| committer |   Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-11-23 15:53:53 -0500 |
| commit | 6dc7694f9df20f148076d82d00cb3663afb0b000 (patch) | |
| tree | c5c3c20ad80383bb28cf02e25cc6c0a60099e266 /net | |
| parent | sctp: implement definition for SACK-IMMEDIATELY extension (diff) | |
| download | linux-dev-6dc7694f9df20f148076d82d00cb3663afb0b000.tar.xz linux-dev-6dc7694f9df20f148076d82d00cb3663afb0b000.zip | |
sctp: implement the receiver side for SACK-IMMEDIATELY extension
This patch implement the receiver side for SACK-IMMEDIATELY
extension:
Section 4.2. Receiver Side Considerations
On reception of an SCTP packet containing a DATA chunk with the I-bit
set, the receiver SHOULD NOT delay the sending of the corresponding
SACK chunk and SHOULD send it back immediately.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index d4df45022ffa..8ee24c9dc7e9 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -2868,6 +2868,7 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep, sctp_cmd_seq_t *commands) { struct sctp_chunk *chunk = arg; + sctp_arg_t force = SCTP_NOFORCE(); int error; if (!sctp_vtag_verify(chunk, asoc)) { @@ -2901,6 +2902,9 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep, BUG(); } + if (chunk->chunk_hdr->flags & SCTP_DATA_SACK_IMM) + force = SCTP_FORCE(); + if (asoc->autoclose) { sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART, SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE)); @@ -2929,7 +2933,7 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep, * more aggressive than the following algorithms allow. */ if (chunk->end_of_packet) - sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE()); + sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, force); return SCTP_DISPOSITION_CONSUME; @@ -2954,7 +2958,7 @@ discard_force: discard_noforce: if (chunk->end_of_packet) - sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE()); + sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, force); return SCTP_DISPOSITION_DISCARD; consume: |