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| author | Xin Long <lucien.xin@gmail.com> | 2017-12-08 21:04:02 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-11 11:23:04 -0500 |
| commit | 668c9beb9020d5834ee9e43c208190a07d2b1928 (patch) | |
| tree | 261f79e022a21f748425736b66ddcf7e42b9c00f /net/sctp/output.c | |
| parent | 0c3f6f655487d12c7a0c16914c98c599043e88d3 (diff) | |
| download | linux-668c9beb9020d5834ee9e43c208190a07d2b1928.tar.bz2 | |
sctp: implement assign_number for sctp_stream_interleave
assign_number is added as a member of sctp_stream_interleave, used
to assign ssn for data or mid (message id) for idata, called in
sctp_packet_append_data. sctp_chunk_assign_ssn is left as it is,
and sctp_chunk_assign_mid is added for sctp_stream_interleave_1.
This procedure is described in section 2.2.2 of RFC8260.
All sizeof(struct sctp_data_chunk) in tx path is replaced with
sctp_datachk_len, to make it right for idata as well. And also
adjust sctp_chunk_is_data for SCTP_CID_I_DATA.
After this patch, idata can be built and sent in tx path.
Note that if sp strm_interleave is set, it has to wait_connect in
sctp_sendmsg, as asoc intl_enable need to be known after 4 shake-
hands, to decide if it should use data or idata later. data and
idata can't be mixed to send in one asoc.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/output.c')
| -rw-r--r-- | net/sctp/output.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c index 4a865cd06d76..01a26ee051e3 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -313,6 +313,7 @@ static enum sctp_xmit __sctp_packet_append_chunk(struct sctp_packet *packet, /* We believe that this chunk is OK to add to the packet */ switch (chunk->chunk_hdr->type) { case SCTP_CID_DATA: + case SCTP_CID_I_DATA: /* Account for the data being in the packet */ sctp_packet_append_data(packet, chunk); /* Disallow SACK bundling after DATA. */ @@ -724,7 +725,7 @@ static enum sctp_xmit sctp_packet_can_append_data(struct sctp_packet *packet, * or delay in hopes of bundling a full sized packet. */ if (chunk->skb->len + q->out_qlen > transport->pathmtu - - packet->overhead - sizeof(struct sctp_data_chunk) - 4) + packet->overhead - sctp_datachk_len(&chunk->asoc->stream) - 4) /* Enough data queued to fill a packet */ return SCTP_XMIT_OK; @@ -759,7 +760,7 @@ static void sctp_packet_append_data(struct sctp_packet *packet, asoc->peer.rwnd = rwnd; sctp_chunk_assign_tsn(chunk); - sctp_chunk_assign_ssn(chunk); + asoc->stream.si->assign_number(chunk); } static enum sctp_xmit sctp_packet_will_fit(struct sctp_packet *packet, |