diff options
Diffstat (limited to 'sys/netinet/sctp_indata.c')
-rw-r--r-- | sys/netinet/sctp_indata.c | 417 |
1 files changed, 197 insertions, 220 deletions
diff --git a/sys/netinet/sctp_indata.c b/sys/netinet/sctp_indata.c index 4d142f7..2522148 100644 --- a/sys/netinet/sctp_indata.c +++ b/sys/netinet/sctp_indata.c @@ -2881,18 +2881,13 @@ sctp_handle_segments(struct sctp_tcb *stcb, struct sctp_association *asoc, * value to the sender's * nonce sum */ - if (tp1->sent < SCTP_DATAGRAM_ACKED) { - /* - * If it is less - * than ACKED, it is - * now no-longer in - * flight. Higher - * values may - * already be set - * via previous Gap - * Ack Blocks... - * i.e. ACKED or - * MARKED. + if (tp1->sent < SCTP_DATAGRAM_RESEND) { + /*- + * If it is less than RESEND, it is + * now no-longer in flight. + * Higher values may already be set + * via previous Gap Ack Blocks... + * i.e. ACKED or RESEND. */ if (compare_with_wrap(tp1->rec.data.TSN_seq, *biggest_newly_acked_tsn, MAX_TSN)) { @@ -2927,7 +2922,7 @@ sctp_handle_segments(struct sctp_tcb *stcb, struct sctp_association *asoc, if (*this_sack_lowest_newack == 0) { #ifdef SCTP_SACK_LOGGING sctp_log_sack(*this_sack_lowest_newack, - last_tsn, + v last_tsn, tp1->rec.data.TSN_seq, 0, 0, @@ -2985,28 +2980,16 @@ sctp_handle_segments(struct sctp_tcb *stcb, struct sctp_association *asoc, SCTP_LOG_TSN_ACKED); #endif #ifdef SCTP_FLIGHT_LOGGING - sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN, + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_GAP, tp1->whoTo->flight_size, tp1->book_size, - (uintptr_t) stcb, + (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); #endif - if (tp1->whoTo->flight_size >= tp1->book_size) - tp1->whoTo->flight_size -= tp1->book_size; - else - tp1->whoTo->flight_size = 0; - - if (asoc->total_flight >= tp1->book_size) { - asoc->total_flight -= tp1->book_size; - if (asoc->total_flight_count > 0) - asoc->total_flight_count--; - } else { - asoc->total_flight = 0; - asoc->total_flight_count = 0; - } + sctp_flight_size_decrease(tp1); + sctp_total_flight_decrease(stcb, tp1); tp1->whoTo->net_ack += tp1->send_size; - if (tp1->snd_count < 2) { /* * True @@ -3028,25 +3011,28 @@ sctp_handle_segments(struct sctp_tcb *stcb, struct sctp_association *asoc, } } } - if (tp1->sent <= SCTP_DATAGRAM_RESEND && - tp1->sent != SCTP_DATAGRAM_UNSENT && - compare_with_wrap(tp1->rec.data.TSN_seq, - asoc->this_sack_highest_gap, - MAX_TSN)) { - asoc->this_sack_highest_gap = - tp1->rec.data.TSN_seq; - } - if (tp1->sent == SCTP_DATAGRAM_RESEND) { - sctp_ucount_decr(asoc->sent_queue_retran_cnt); + if (tp1->sent <= SCTP_DATAGRAM_RESEND) { + (*ecn_seg_sums) += tp1->rec.data.ect_nonce; + (*ecn_seg_sums) &= SCTP_SACK_NONCE_SUM; + if (compare_with_wrap(tp1->rec.data.TSN_seq, + asoc->this_sack_highest_gap, + MAX_TSN)) { + asoc->this_sack_highest_gap = + tp1->rec.data.TSN_seq; + } + if (tp1->sent == SCTP_DATAGRAM_RESEND) { + sctp_ucount_decr(asoc->sent_queue_retran_cnt); #ifdef SCTP_AUDITING_ENABLED - sctp_audit_log(0xB2, - (asoc->sent_queue_retran_cnt & 0x000000ff)); + sctp_audit_log(0xB2, + (asoc->sent_queue_retran_cnt & 0x000000ff)); #endif - + } } - (*ecn_seg_sums) += tp1->rec.data.ect_nonce; - (*ecn_seg_sums) &= SCTP_SACK_NONCE_SUM; - + /* + * All chunks NOT UNSENT + * fall through here and are + * marked + */ tp1->sent = SCTP_DATAGRAM_MARKED; if (tp1->rec.data.chunk_was_revoked) { /* deflate the cwnd */ @@ -3074,7 +3060,8 @@ sctp_handle_segments(struct sctp_tcb *stcb, struct sctp_association *asoc, } static void -sctp_check_for_revoked(struct sctp_association *asoc, uint32_t cumack, +sctp_check_for_revoked(struct sctp_tcb *stcb, + struct sctp_association *asoc, uint32_t cumack, u_long biggest_tsn_acked) { struct sctp_tmit_chunk *tp1; @@ -3098,15 +3085,20 @@ sctp_check_for_revoked(struct sctp_association *asoc, uint32_t cumack, * We must add this stuff back in to assure * timers and such get started. */ - tp1->whoTo->flight_size += tp1->book_size; +#ifdef SCTP_FLIGHT_LOGGING + sctp_misc_ints(SCTP_FLIGHT_LOG_UP_REVOKE, + tp1->whoTo->flight_size, + tp1->book_size, + (uintptr_t) tp1->whoTo, + tp1->rec.data.TSN_seq); +#endif + sctp_flight_size_increase(tp1); + sctp_total_flight_increase(stcb, tp1); /* * We inflate the cwnd to compensate for our * artificial inflation of the flight_size. */ tp1->whoTo->cwnd += tp1->book_size; - asoc->total_flight_count++; - asoc->total_flight += tp1->book_size; - tot_revoked++; #ifdef SCTP_SACK_LOGGING sctp_log_sack(asoc->last_acked_seq, @@ -3247,8 +3239,7 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, * No new acks were receieved for data sent to this * dest. Therefore, according to the SFR algo for * CMT, no data sent to this dest can be marked for - * FR using this SACK. (iyengar@cis.udel.edu, - * 2005/05/12) + * FR using this SACK. */ tp1 = TAILQ_NEXT(tp1, sctp_next); continue; @@ -3298,11 +3289,10 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, * cumack earlier. If not already to be * rtx'd, If not a mixed sack and if tp1 is * not between two sacked TSNs, then mark by - * one more. - */ - /* - * Jana FIX, does this mean you strike it - * twice (see code above?) + * one more. NOTE that we are marking by one + * additional time since the SACK DAC flag + * indicates that two packets have been + * received after this missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && compare_with_wrap(this_sack_lowest_newack, tp1->rec.data.TSN_seq, MAX_TSN)) { @@ -3367,7 +3357,13 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, * If not a mixed sack and * if tp1 is not between two * sacked TSNs, then mark by - * one more. + * one more. NOTE that we + * are marking by one + * additional time since the + * SACK DAC flag indicates + * that two packets have + * been received after this + * missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && @@ -3418,7 +3414,10 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, * cumack earlier. If not already to be * rtx'd, If not a mixed sack and if tp1 is * not between two sacked TSNs, then mark by - * one more. + * one more. NOTE that we are marking by one + * additional time since the SACK DAC flag + * indicates that two packets have been + * received after this missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && compare_with_wrap(this_sack_lowest_newack, tp1->rec.data.TSN_seq, MAX_TSN)) { @@ -3521,17 +3520,14 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, } /* fix counts and things */ #ifdef SCTP_FLIGHT_LOGGING - sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN, + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_RSND, tp1->whoTo->flight_size, tp1->book_size, - (uintptr_t) stcb, + (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); #endif tp1->whoTo->net_ack++; - if (tp1->whoTo->flight_size >= tp1->book_size) - tp1->whoTo->flight_size -= tp1->book_size; - else - tp1->whoTo->flight_size = 0; + sctp_flight_size_decrease(tp1); #ifdef SCTP_LOG_RWND sctp_log_rwnd(SCTP_INCREASE_PEER_RWND, @@ -3541,16 +3537,7 @@ sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, asoc->peers_rwnd += (tp1->send_size + sctp_peer_chunk_oh); /* remove from the total flight */ - if (asoc->total_flight >= tp1->book_size) { - asoc->total_flight -= tp1->book_size; - if (asoc->total_flight_count > 0) - asoc->total_flight_count--; - } else { - asoc->total_flight = 0; - asoc->total_flight_count = 0; - } - - + sctp_total_flight_decrease(stcb, tp1); if (alt != tp1->whoTo) { /* yes, there is an alternate. */ sctp_free_remote_addr(tp1->whoTo); @@ -3950,7 +3937,7 @@ sctp_cwnd_update(struct sctp_tcb *stcb, */ #endif - if (asoc->fast_retran_loss_recovery && will_exit == 0) { + if (asoc->fast_retran_loss_recovery && will_exit == 0 && sctp_cmt_on_off == 0) { /* * If we are in loss recovery we skip any cwnd * update @@ -4071,45 +4058,12 @@ skip_cwnd_update: } } -static int sctp_anal_print = 0; - static void -sctp_print_fs_audit(struct sctp_association *asoc) +sctp_fs_audit(struct sctp_association *asoc) { - int cnt, i; struct sctp_tmit_chunk *chk; int inflight = 0, resend = 0, inbetween = 0, acked = 0, above = 0; - printf("sdqc:%d stqc:%d retran:%d reasm:%d cnt:%d tot_flight:%d tfc:%d\n", - (int)asoc->send_queue_cnt, - (int)asoc->sent_queue_cnt, - (int)asoc->sent_queue_retran_cnt, - (int)asoc->size_on_reasm_queue, - (int)asoc->cnt_on_reasm_queue, - (int)asoc->total_flight, - (int)asoc->total_flight_count); - printf("my_rwnd:%d peers_rwnd:%d asoc calc cumack:%x\n", - (int)asoc->my_rwnd, (int)asoc->peers_rwnd, asoc->last_acked_seq); - for (i = 0; i < asoc->streamoutcnt; i++) { - struct sctp_stream_queue_pending *sp; - - cnt = 0; - TAILQ_FOREACH(sp, &asoc->strmout[i].outqueue, next) - cnt++; - if (cnt) { - printf("Stream %d has %d msgs yet to be sent in strm queue\n", i, cnt); - } - } - cnt = 0; - TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { - cnt++; - } - printf("The control_send_queue has %d pending\n", cnt); - cnt = 0; - TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { - cnt++; - } - printf("The send_queue (waiting to get in flight) has %d chunks pending\n", cnt); TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { if (chk->sent < SCTP_DATAGRAM_RESEND) { inflight++; @@ -4121,14 +4075,58 @@ sctp_print_fs_audit(struct sctp_association *asoc) above++; } else { acked++; - printf("chk->sent:%x chk->tsn:%x\n", - chk->sent, chk->rec.data.TSN_seq); } } - printf("The sent_queue stats inflight:%d resend:%d acked:%d above:%d inbetween:%d\n", - inflight, resend, acked, above, inbetween); + if ((inflight > 0) || (inbetween > 0)) { + panic("Flight size-express incorrect? \n"); + } +} + + +static void +sctp_window_probe_recovery(struct sctp_tcb *stcb, + struct sctp_association *asoc, + struct sctp_nets *net, + struct sctp_tmit_chunk *tp1) +{ + struct sctp_tmit_chunk *chk; + + /* First setup this one and get it moved back */ + tp1->sent = SCTP_DATAGRAM_UNSENT; + tp1->window_probe = 0; +#ifdef SCTP_FLIGHT_LOGGING + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_WP, + tp1->whoTo->flight_size, + tp1->book_size, + (uintptr_t) tp1->whoTo, + tp1->rec.data.TSN_seq); +#endif + 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--; + asoc->send_queue_cnt++; + /* + * Now all guys marked for RESEND on the sent_queue must be moved + * back too. + */ + TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { + if (chk->sent == SCTP_DATAGRAM_RESEND) { + /* Another chunk to move */ + chk->sent = SCTP_DATAGRAM_UNSENT; + chk->window_probe = 0; + /* It should not be in flight */ + TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); + TAILQ_INSERT_AFTER(&asoc->send_queue, tp1, chk, sctp_next); + asoc->sent_queue_cnt--; + asoc->send_queue_cnt++; + sctp_ucount_decr(asoc->sent_queue_retran_cnt); + } + } } + void sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, uint32_t rwnd, int nonce_sum_flag, int *abort_now) @@ -4138,6 +4136,7 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, struct sctp_tmit_chunk *tp1, *tp2; uint32_t old_rwnd; int win_probe_recovery = 0; + int win_probe_recovered = 0; int j, done_once;; SCTP_TCB_LOCK_ASSERT(stcb); @@ -4162,19 +4161,22 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, if (sctp_strict_sacks) { uint32_t send_s; - if (TAILQ_EMPTY(&asoc->send_queue)) { - send_s = asoc->sending_seq; + if (!TAILQ_EMPTY(&asoc->sent_queue)) { + tp1 = TAILQ_LAST(&asoc->sent_queue, + sctpchunk_listhead); + send_s = tp1->rec.data.TSN_seq + 1; } else { - tp1 = TAILQ_FIRST(&asoc->send_queue); - send_s = tp1->rec.data.TSN_seq; + send_s = asoc->sending_seq; } if ((cumack == send_s) || compare_with_wrap(cumack, send_s, MAX_TSN)) { -#ifdef INVARIANTS /* for testing only */ - panic("Impossible sack 1"); -#else +#ifndef INVARIANTS struct mbuf *oper; +#endif +#ifdef INVARIANTS + panic("Impossible sack 1"); +#else *abort_now = 1; /* XXX */ oper = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)), @@ -4221,27 +4223,17 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, * flight. Higher values may * occur during marking */ + if (tp1->sent < SCTP_DATAGRAM_RESEND) { #ifdef SCTP_FLIGHT_LOGGING - sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN, - tp1->whoTo->flight_size, - tp1->book_size, - (uintptr_t) stcb, - tp1->rec.data.TSN_seq); + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_CA, + tp1->whoTo->flight_size, + tp1->book_size, + (uintptr_t) tp1->whoTo, + tp1->rec.data.TSN_seq); #endif - if (tp1->whoTo->flight_size >= tp1->book_size) { - tp1->whoTo->flight_size -= tp1->book_size; - } else { - tp1->whoTo->flight_size = 0; - } - - if (asoc->total_flight >= tp1->book_size) { - asoc->total_flight -= tp1->book_size; - if (asoc->total_flight_count > 0) - asoc->total_flight_count--; - } else { - asoc->total_flight = 0; - asoc->total_flight_count = 0; + sctp_flight_size_decrease(tp1); + sctp_total_flight_decrease(stcb, tp1); } tp1->whoTo->net_ack += tp1->send_size; if (tp1->snd_count < 2) { @@ -4414,6 +4406,7 @@ again: TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (win_probe_recovery && (net->window_probe)) { net->window_probe = 0; + win_probe_recovered = 1; /* * Find first chunk that was used with window probe * and clear the sent @@ -4421,15 +4414,7 @@ again: TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->window_probe) { /* move back to data send queue */ - tp1->sent = SCTP_DATAGRAM_UNSENT; - tp1->window_probe = 0; - net->flight_size -= tp1->book_size; - asoc->total_flight -= tp1->book_size; - TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next); - TAILQ_INSERT_HEAD(&asoc->send_queue, tp1, sctp_next); - asoc->sent_queue_cnt--; - asoc->send_queue_cnt++; - asoc->total_flight_count--; + sctp_window_probe_recovery(stcb, asoc, net, tp1); break; } } @@ -4463,12 +4448,10 @@ again: if ((j == 0) && (!TAILQ_EMPTY(&asoc->sent_queue)) && (asoc->sent_queue_retran_cnt == 0) && + (win_probe_recovered == 0) && (done_once == 0)) { /* huh, this should not happen */ - if (sctp_anal_print == 0) { - printf("Flight size-express incorrect? cumack:%x\n", cumack); - sctp_print_fs_audit(asoc); - } + sctp_fs_audit(asoc); TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->flight_size = 0; } @@ -4477,18 +4460,12 @@ again: asoc->sent_queue_retran_cnt = 0; TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->sent < SCTP_DATAGRAM_RESEND) { - tp1->whoTo->flight_size += tp1->book_size; - asoc->total_flight += tp1->book_size; - asoc->total_flight_count++; + sctp_flight_size_increase(tp1); + sctp_total_flight_increase(stcb, tp1); } else if (tp1->sent == SCTP_DATAGRAM_RESEND) { asoc->sent_queue_retran_cnt++; } } - if (sctp_anal_print == 0) { - printf("After audit, totalflight:%d, retran_cnt:%d\n", - asoc->total_flight, asoc->sent_queue_retran_cnt); - sctp_anal_print = 1; - } done_once = 1; goto again; } @@ -4597,12 +4574,13 @@ sctp_handle_sack(struct sctp_sack_chunk *ch, struct sctp_tcb *stcb, uint16_t num_seg, num_dup; uint16_t wake_him = 0; unsigned int sack_length; - uint32_t send_s; + uint32_t send_s = 0; long j; int accum_moved = 0; int will_exit_fast_recovery = 0; uint32_t a_rwnd, old_rwnd; int win_probe_recovery = 0; + int win_probe_recovered = 0; struct sctp_nets *net = NULL; int nonce_sum_flag, ecn_seg_sums = 0; int done_once; @@ -4685,22 +4663,26 @@ sctp_handle_sack(struct sctp_sack_chunk *ch, struct sctp_tcb *stcb, } } #endif - /* reality check */ - if (TAILQ_EMPTY(&asoc->send_queue)) { - send_s = asoc->sending_seq; - } else { - tp1 = TAILQ_FIRST(&asoc->send_queue); - send_s = tp1->rec.data.TSN_seq; - } - if (sctp_strict_sacks) { + /* reality check */ + if (!TAILQ_EMPTY(&asoc->sent_queue)) { + tp1 = TAILQ_LAST(&asoc->sent_queue, + sctpchunk_listhead); + send_s = tp1->rec.data.TSN_seq + 1; + } else { + send_s = asoc->sending_seq; + } if (cum_ack == send_s || compare_with_wrap(cum_ack, send_s, MAX_TSN)) { -#ifdef INVARIANTS /* for testing only */ +#ifndef INVARIANTS + struct mbuf *oper; + +#endif +#ifdef INVARIANTS hopeless_peer: panic("Impossible sack 1"); #else - struct mbuf *oper; + /* * no way, we have not even sent this TSN out yet. @@ -4826,25 +4808,16 @@ sctp_handle_sack(struct sctp_sack_chunk *ch, struct sctp_tcb *stcb, tp1->whoTo->dest_state &= ~SCTP_ADDR_UNCONFIRMED; } + if (tp1->sent < SCTP_DATAGRAM_RESEND) { #ifdef SCTP_FLIGHT_LOGGING - sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN, - tp1->whoTo->flight_size, - tp1->book_size, - (uintptr_t) stcb, - tp1->rec.data.TSN_seq); + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_CA, + tp1->whoTo->flight_size, + tp1->book_size, + (uintptr_t) tp1->whoTo, + tp1->rec.data.TSN_seq); #endif - if (tp1->whoTo->flight_size >= tp1->book_size) { - tp1->whoTo->flight_size -= tp1->book_size; - } else { - tp1->whoTo->flight_size = 0; - } - if (asoc->total_flight >= tp1->book_size) { - asoc->total_flight -= tp1->book_size; - if (asoc->total_flight_count > 0) - asoc->total_flight_count--; - } else { - asoc->total_flight = 0; - asoc->total_flight_count = 0; + sctp_flight_size_decrease(tp1); + sctp_total_flight_decrease(stcb, tp1); } tp1->whoTo->net_ack += tp1->send_size; @@ -5013,8 +4986,11 @@ skip_segments: } if ((TAILQ_FIRST(&asoc->sent_queue) == NULL) && (asoc->total_flight > 0)) { - printf("Warning flight size incorrect should be 0 is %d\n", - asoc->total_flight); + panic("Warning flight size is postive and should be 0"); +/* + printf("Warning flight size incorrect should be 0 is %d\n", + asoc->total_flight); +*/ asoc->total_flight = 0; } if (tp1->data) { @@ -5073,7 +5049,7 @@ done_with_it: */ if (num_seg) - sctp_check_for_revoked(asoc, cum_ack, biggest_tsn_acked); + sctp_check_for_revoked(stcb, asoc, cum_ack, biggest_tsn_acked); else if (asoc->saw_sack_with_frags) { int cnt_revoked = 0; @@ -5084,8 +5060,16 @@ done_with_it: if ((tp1->sent > SCTP_DATAGRAM_RESEND) && (tp1->sent < SCTP_FORWARD_TSN_SKIP)) { tp1->sent = SCTP_DATAGRAM_SENT; +#ifdef SCTP_FLIGHT_LOGGING + sctp_misc_ints(SCTP_FLIGHT_LOG_UP_REVOKE, + tp1->whoTo->flight_size, + tp1->book_size, + (uintptr_t) tp1->whoTo, + tp1->rec.data.TSN_seq); +#endif + sctp_flight_size_increase(tp1); + sctp_total_flight_increase(stcb, tp1); tp1->rec.data.chunk_was_revoked = 1; - tp1->whoTo->flight_size += tp1->book_size; /* * To ensure that this increase in * flightsize, which is artificial, @@ -5094,8 +5078,6 @@ done_with_it: * artificially. */ tp1->whoTo->cwnd += tp1->book_size; - asoc->total_flight_count++; - asoc->total_flight += tp1->book_size; cnt_revoked++; } } @@ -5282,12 +5264,10 @@ done_with_it: } /* * CMT fast recovery code. Need to debug. ((sctp_cmt_on_off == 1) && - * (net->fast_retran_loss_recovery == 0))) if - * ((asoc->fast_retran_loss_recovery == 0) || (sctp_cmt_on_off == - * 1)) { + * (net->fast_retran_loss_recovery == 0))) */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { - if (asoc->fast_retran_loss_recovery == 0) { + if ((asoc->fast_retran_loss_recovery == 0) || (sctp_cmt_on_off == 1)) { /* out of a RFC2582 Fast recovery window? */ if (net->net_ack > 0) { /* @@ -5467,6 +5447,7 @@ again: TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (win_probe_recovery && (net->window_probe)) { net->window_probe = 0; + win_probe_recovered = 1; /*- * Find first chunk that was used with * window probe and clear the event. Put @@ -5475,15 +5456,7 @@ again: */ TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->window_probe) { - tp1->sent = SCTP_DATAGRAM_UNSENT; - tp1->window_probe = 0; - net->flight_size -= tp1->book_size; - asoc->total_flight -= tp1->book_size; - TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next); - TAILQ_INSERT_HEAD(&asoc->send_queue, tp1, sctp_next); - asoc->sent_queue_cnt--; - asoc->send_queue_cnt++; - asoc->total_flight_count--; + sctp_window_probe_recovery(stcb, asoc, net, tp1); break; } } @@ -5492,18 +5465,28 @@ again: j++; sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net); + } else { + if (SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { + sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, + stcb, net, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_22); + } + if (sctp_early_fr) { + if (SCTP_OS_TIMER_PENDING(&net->fr_timer.timer)) { + SCTP_STAT_INCR(sctps_earlyfrstpidsck4); + sctp_timer_stop(SCTP_TIMER_TYPE_EARLYFR, stcb->sctp_ep, stcb, net, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_23); + } + } } } if ((j == 0) && (!TAILQ_EMPTY(&asoc->sent_queue)) && (asoc->sent_queue_retran_cnt == 0) && + (win_probe_recovered == 0) && (done_once == 0)) { /* huh, this should not happen */ - if (sctp_anal_print == 0) { - printf("Flight size incorrect sack-cumack:%x prev_last_ack:%x? fixing??", - cum_ack, sav_cum_ack); - sctp_print_fs_audit(asoc); - } + sctp_fs_audit(asoc); TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->flight_size = 0; } @@ -5512,18 +5495,12 @@ again: asoc->sent_queue_retran_cnt = 0; TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->sent < SCTP_DATAGRAM_RESEND) { - tp1->whoTo->flight_size += tp1->book_size; - asoc->total_flight += tp1->book_size; - asoc->total_flight_count++; + sctp_flight_size_increase(tp1); + sctp_total_flight_increase(stcb, tp1); } else if (tp1->sent == SCTP_DATAGRAM_RESEND) { asoc->sent_queue_retran_cnt++; } } - if (sctp_anal_print == 0) { - printf("After audit, totalflight:%d retran count:%d\n", - asoc->total_flight, asoc->sent_queue_retran_cnt); - sctp_anal_print = 1; - } done_once = 1; goto again; } |