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Ensure that outgoing streams get reset when they run dry.

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MFC after:	1 week
This commit is contained in:
Michael Tuexen 2015-12-03 15:19:29 +00:00
parent 3d23c0a436
commit d96bef9c77
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=291700
4 changed files with 24 additions and 3 deletions
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15
sys/netinet/sctp_indata.c
View File

@ -2763,6 +2763,11 @@ sctp_process_segment_range(struct sctp_tcb *stcb, struct sctp_tmit_chunk **p_tp1
panic("No chunks on the queues for sid %u.", tp1->rec.data.stream_number);
#endif
}
if ((stcb->asoc.strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) &&
(stcb->asoc.strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) &&
TAILQ_EMPTY(&stcb->asoc.strmout[tp1->rec.data.stream_number].outqueue)) {
stcb->asoc.trigger_reset = 1;
}
tp1->sent = SCTP_DATAGRAM_NR_ACKED;
if (tp1->data) {
/*
@ -3736,6 +3741,11 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
#endif
}
}
if ((asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) &&
(asoc->strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) &&
TAILQ_EMPTY(&asoc->strmout[tp1->rec.data.stream_number].outqueue)) {
asoc->trigger_reset = 1;
}
TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next);
if (tp1->data) {
/* sa_ignore NO_NULL_CHK */
@ -4461,6 +4471,11 @@ sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
#endif
}
}
if ((asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) &&
(asoc->strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) &&
TAILQ_EMPTY(&asoc->strmout[tp1->rec.data.stream_number].outqueue)) {
asoc->trigger_reset = 1;
}
TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next);
if (PR_SCTP_ENABLED(tp1->flags)) {
if (asoc->pr_sctp_cnt != 0)

2
sys/netinet/sctp_input.c
View File

@ -6024,7 +6024,7 @@ sctp_common_input_processing(struct mbuf **mm, int iphlen, int offset, int lengt
if (!TAILQ_EMPTY(&stcb->asoc.control_send_queue)) {
cnt_ctrl_ready = stcb->asoc.ctrl_queue_cnt - stcb->asoc.ecn_echo_cnt_onq;
}
if (cnt_ctrl_ready ||
if (cnt_ctrl_ready || stcb->asoc.trigger_reset ||
((un_sent) &&
(stcb->asoc.peers_rwnd > 0 ||
(stcb->asoc.peers_rwnd <= 0 && stcb->asoc.total_flight == 0)))) {

5
sys/netinet/sctp_output.c
View File

@ -9897,7 +9897,6 @@ sctp_chunk_output(struct sctp_inpcb *inp,
asoc = &stcb->asoc;
do_it_again:
/* The Nagle algorithm is only applied when handling a send call. */
stcb->asoc.trigger_reset = 0;
if (from_where == SCTP_OUTPUT_FROM_USR_SEND) {
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY)) {
nagle_on = 0;
@ -9914,7 +9913,8 @@ sctp_chunk_output(struct sctp_inpcb *inp,
if ((un_sent <= 0) &&
(TAILQ_EMPTY(&asoc->control_send_queue)) &&
(TAILQ_EMPTY(&asoc->asconf_send_queue)) &&
(asoc->sent_queue_retran_cnt == 0)) {
(asoc->sent_queue_retran_cnt == 0) &&
(asoc->trigger_reset == 0)) {
/* Nothing to do unless there is something to be sent left */
return;
}
@ -11885,6 +11885,7 @@ sctp_send_stream_reset_out_if_possible(struct sctp_tcb *stcb, int so_locked)
uint32_t seq;
asoc = &stcb->asoc;
asoc->trigger_reset = 0;
if (asoc->stream_reset_outstanding) {
return (EALREADY);
}

5
sys/netinet/sctp_timer.c
View File

@ -442,6 +442,11 @@ sctp_recover_sent_list(struct sctp_tcb *stcb)
asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
}
}
if ((asoc->strmout[chk->rec.data.stream_number].chunks_on_queues == 0) &&
(asoc->strmout[chk->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) &&
TAILQ_EMPTY(&asoc->strmout[chk->rec.data.stream_number].outqueue)) {
asoc->trigger_reset = 1;
}
TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
if (PR_SCTP_ENABLED(chk->flags)) {
if (asoc->pr_sctp_cnt != 0)