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- PR-SCTP bug, where the CUM-ACK was not being updated

Browse source 
into the advance_peer_ack point so we would incorrectly
  send a wrong value in the FWD-TSN
- PR-SCTP bug, where an PR packet is used for a window
  probe which could incorrectly get the packet moved
  back into the send_queue, which will cause major issues and
  should not happen.
- Fix a trace to use the proper macro.
This commit is contained in:
Randall Stewart 2009-03-04 20:54:42 +00:00
parent 5bdbd38305
commit dfb11ef895
3 changed files with 27 additions and 16 deletions
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3
sys/netinet/sctp_constants.h
View file

@ -228,8 +228,9 @@ __FBSDID("$FreeBSD$");
#define SCTP_MAP_TSN_ENTERS 119
#define SCTP_THRESHOLD_CLEAR 120
#define SCTP_THRESHOLD_INCR 121
#define SCTP_FLIGHT_LOG_DWN_WP_FWD 122
#define SCTP_LOG_MAX_TYPES 122
#define SCTP_LOG_MAX_TYPES 123
/*
* To turn on various logging, you must first enable 'options KTR' and
* you might want to bump the entires 'options KTR_ENTRIES=80000'.

38
sys/netinet/sctp_indata.c
View file

@ -4182,6 +4182,18 @@ sctp_window_probe_recovery(struct sctp_tcb *stcb,
struct sctp_tmit_chunk *chk;
/* First setup this one and get it moved back */
sctp_flight_size_decrease(tp1);
sctp_total_flight_decrease(stcb, tp1);
tp1->window_probe = 0;
if ((tp1->sent == SCTP_FORWARD_TSN_SKIP) || (tp1->data == NULL)) {
/* TSN's skipped we do NOT move back. */
sctp_misc_ints(SCTP_FLIGHT_LOG_DWN_WP_FWD,
tp1->whoTo->flight_size,
tp1->book_size,
(uintptr_t) tp1->whoTo,
tp1->rec.data.TSN_seq);
return;
}
tp1->sent = SCTP_DATAGRAM_UNSENT;
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) {
sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_WP,
@ -4190,8 +4202,6 @@ sctp_window_probe_recovery(struct sctp_tcb *stcb,
(uintptr_t) tp1->whoTo,
tp1->rec.data.TSN_seq);
}
sctp_flight_size_decrease(tp1);
sctp_total_flight_decrease(stcb, tp1);
TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next);
TAILQ_INSERT_HEAD(&asoc->send_queue, tp1, sctp_next);
asoc->sent_queue_cnt--;
@ -4480,10 +4490,6 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
asoc->total_flight = 0;
asoc->total_flight_count = 0;
}
/* Fix up the a-p-a-p for future PR-SCTP sends */
if (compare_with_wrap(cumack, asoc->advanced_peer_ack_point, MAX_TSN)) {
asoc->advanced_peer_ack_point = cumack;
}
/* ECN Nonce updates */
if (asoc->ecn_nonce_allowed) {
if (asoc->nonce_sum_check) {
@ -4699,6 +4705,14 @@ again:
stcb->sctp_ep, stcb, asoc->primary_destination);
}
}
/*********************************************/
/* Here we perform PR-SCTP procedures */
/* (section 4.2) */
/*********************************************/
/* C1. update advancedPeerAckPoint */
if (compare_with_wrap(cumack, asoc->advanced_peer_ack_point, MAX_TSN)) {
asoc->advanced_peer_ack_point = cumack;
}
/* PR-Sctp issues need to be addressed too */
if ((asoc->peer_supports_prsctp) && (asoc->pr_sctp_cnt > 0)) {
struct sctp_tmit_chunk *lchk;
@ -5446,14 +5460,6 @@ done_with_it:
sctp_strike_gap_ack_chunks(stcb, asoc, biggest_tsn_acked,
biggest_tsn_newly_acked, this_sack_lowest_newack, accum_moved);
}
/*********************************************/
/* Here we perform PR-SCTP procedures */
/* (section 4.2) */
/*********************************************/
/* C1. update advancedPeerAckPoint */
if (compare_with_wrap(cum_ack, asoc->advanced_peer_ack_point, MAX_TSN)) {
asoc->advanced_peer_ack_point = cum_ack;
}
/* JRS - Use the congestion control given in the CC module */
asoc->cc_functions.sctp_cwnd_update_after_fr(stcb, asoc);
@ -5615,6 +5621,10 @@ again:
done_once = 1;
goto again;
}
/* Fix up the a-p-a-p for future PR-SCTP sends */
if (compare_with_wrap(cum_ack, asoc->advanced_peer_ack_point, MAX_TSN)) {
asoc->advanced_peer_ack_point = cum_ack;
}
/* C2. try to further move advancedPeerAckPoint ahead */
if ((asoc->peer_supports_prsctp) && (asoc->pr_sctp_cnt > 0)) {
struct sctp_tmit_chunk *lchk;

2
sys/netinet/sctp_os_bsd.h
View file

@ -196,7 +196,7 @@ MALLOC_DECLARE(SCTP_M_SOCKOPT);
#define SCTP_PRINTF(params...) printf(params)
#ifdef SCTP_LTRACE_CHUNKS
#define SCTP_LTRACE_CHK(a, b, c, d) if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_CHUNK_ENABLE) CTR6(KTR_SUBSYS, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_CHUNK_PROC, 0, a, b, c, d)
#define SCTP_LTRACE_CHK(a, b, c, d) if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_CHUNK_ENABLE) SCTP_CTR6(KTR_SUBSYS, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_CHUNK_PROC, 0, a, b, c, d)
#else
#define SCTP_LTRACE_CHK(a, b, c, d)
#endif