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| author | Xin Long <lucien.xin@gmail.com> | 2017-01-17 17:44:47 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-18 20:55:11 +0100 |
| commit | 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 (patch) | |
| tree | 08007191a5e6a018f08dd26919305175b5a14b23 /net/sctp/outqueue.c | |
| parent | sctp: add sockopt SCTP_ENABLE_STREAM_RESET (diff) | |
| download | linux-7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137.tar.xz linux-7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137.zip | |
sctp: implement sender-side procedures for SSN Reset Request Parameter
This patch is to implement sender-side procedures for the Outgoing
and Incoming SSN Reset Request Parameter described in rfc6525 section
5.1.2 and 5.1.3.
It is also add sockopt SCTP_RESET_STREAMS in rfc6525 section 6.3.2
for users.
Note that the new asoc member strreset_outstanding is to make sure
only one reconf request chunk on the fly as rfc6525 section 5.1.1
demands.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/outqueue.c')
| -rw-r--r-- | net/sctp/outqueue.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 34efaa4ef2f6..65abe22d8691 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -915,22 +915,28 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) case SCTP_CID_ECN_ECNE: case SCTP_CID_ASCONF: case SCTP_CID_FWD_TSN: + case SCTP_CID_RECONF: status = sctp_packet_transmit_chunk(packet, chunk, one_packet, gfp); if (status != SCTP_XMIT_OK) { /* put the chunk back */ list_add(&chunk->list, &q->control_chunk_list); - } else { - asoc->stats.octrlchunks++; - /* PR-SCTP C5) If a FORWARD TSN is sent, the - * sender MUST assure that at least one T3-rtx - * timer is running. - */ - if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) { - sctp_transport_reset_t3_rtx(transport); - transport->last_time_sent = jiffies; - } + break; + } + + asoc->stats.octrlchunks++; + /* PR-SCTP C5) If a FORWARD TSN is sent, the + * sender MUST assure that at least one T3-rtx + * timer is running. + */ + if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) { + sctp_transport_reset_t3_rtx(transport); + transport->last_time_sent = jiffies; } + + if (chunk == asoc->strreset_chunk) + sctp_transport_reset_reconf_timer(transport); + break; default: @@ -1016,6 +1022,8 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) /* Finally, transmit new packets. */ while ((chunk = sctp_outq_dequeue_data(q)) != NULL) { + __u32 sid = ntohs(chunk->subh.data_hdr->stream); + /* RFC 2960 6.5 Every DATA chunk MUST carry a valid * stream identifier. */ @@ -1038,6 +1046,11 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) continue; } + if (asoc->stream->out[sid].state == SCTP_STREAM_CLOSED) { + sctp_outq_head_data(q, chunk); + goto sctp_flush_out; + } + /* If there is a specified transport, use it. * Otherwise, we want to use the active path. */ |