diff options
Diffstat (limited to 'src/lib/frct.c')
| -rw-r--r-- | src/lib/frct.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/src/lib/frct.c b/src/lib/frct.c index d703aeaa..b823b3fa 100644 --- a/src/lib/frct.c +++ b/src/lib/frct.c @@ -54,7 +54,10 @@ struct frcti { bool probe; /* Probe active */ #ifdef PROC_FLOW_STATS size_t n_rtx; /* Number of rxm packets */ + size_t n_prb; /* Number of rtt probes */ + size_t n_rtt; /* Number of estimates */ size_t n_dup; /* Duplicates received */ + size_t n_dak; /* Delayed ACKs received */ size_t n_rdv; /* Number of rdv packets */ size_t n_out; /* Packets out of window */ size_t n_rqo; /* Packets out of rqueue */ @@ -139,7 +142,10 @@ static int frct_rib_read(const char * path, "Receiver inactive (ns): %20ld\n" "Receiver last ack: %20u\n" "Number of pkt retransmissions: %20zu\n" + "Number of rtt probes: %20zu\n" + "Number of rtt estimates: %20zu\n" "Number of duplicates received: %20zu\n" + "Number of delayed acks received: %20zu\n" "Number of rendez-vous sent: %20zu\n" "Number of packets out of window: %20zu\n" "Number of packets out of rqueue: %20zu\n", @@ -158,7 +164,10 @@ static int frct_rib_read(const char * path, ts_diff_ns(&frcti->rcv_cr.act, &now), frcti->rcv_cr.seqno, frcti->n_rtx, + frcti->n_prb, + frcti->n_rtt, frcti->n_dup, + frcti->n_dak, frcti->n_rdv, frcti->n_out, frcti->n_rqo); @@ -194,7 +203,7 @@ static int frct_rib_getattr(const char * path, (void) path; (void) attr; - attr->size = 1027; + attr->size = 1189; attr->mtime = 0; return 0; @@ -293,7 +302,6 @@ static void send_frct_pkt(struct frcti * frcti) rwe = frcti->rcv_cr.rwe; diff = ts_diff_ns(&frcti->rcv_cr.act, &now); - if (diff > frcti->a || diff < TICTIME) { pthread_rwlock_unlock(&frcti->lock); return; @@ -304,7 +312,6 @@ static void send_frct_pkt(struct frcti * frcti) pthread_rwlock_unlock(&frcti->lock); __send_frct_pkt(fd, FRCT_ACK | FRCT_FC, ackno, rwe); - } static void __send_rdv(int fd) @@ -375,7 +382,10 @@ static struct frcti * frcti_create(int fd, frcti->rto = BILLION; /* Initial rxm will be after 1 s */ #ifdef PROC_FLOW_STATS frcti->n_rtx = 0; + frcti->n_prb = 0; + frcti->n_rtt = 0; frcti->n_dup = 0; + frcti->n_dak = 0; frcti->n_rdv = 0; frcti->n_out = 0; frcti->n_rqo = 0; @@ -729,6 +739,9 @@ static int __frcti_snd(struct frcti * frcti, frcti->rttseq = snd_cr->seqno; frcti->t_probe = now; frcti->probe = true; +#ifdef PROC_FLOW_STATS + frcti->n_prb++; +#endif } if ((now.tv_sec - rcv_cr->act.tv_sec) * BILLION <= frcti->a) { pci->flags |= FRCT_ACK; @@ -762,10 +775,12 @@ static void rtt_estimator(struct frcti * frcti, srtt += (delta >> 3); rttvar += (ABS(delta) - rttvar) >> 2; } - +#ifdef PROC_FLOW_STATS + frcti->n_rtt++; +#endif frcti->srtt = MAX(1000U, srtt); frcti->mdev = MAX(100U, rttvar); - frcti->rto = MAX(RTO_MIN, frcti->srtt + (frcti->mdev << 2)); + frcti->rto = MAX(RTO_MIN, frcti->srtt + (frcti->mdev << 3)); } /* Always queues the next application packet on the RQ. */ @@ -802,6 +817,7 @@ static void __frcti_rcv(struct frcti * frcti, if (pci->flags & FRCT_DRF) { /* New run. */ rcv_cr->lwe = seqno; rcv_cr->rwe = seqno + RQ_SIZE; + rcv_cr->seqno = seqno; } else if (pci->flags & FRCT_DATA) { goto drop_packet; } @@ -825,6 +841,10 @@ static void __frcti_rcv(struct frcti * frcti, frcti->snd_cr.lwe = ackno; if (frcti->probe && after(ackno, frcti->rttseq)) { +#ifdef PROC_FLOW_STATS + if (!(pci->flags & FRCT_DATA)) + frcti->n_dak++; +#endif rtt_estimator(frcti, ts_diff_ns(&frcti->t_probe, &now)); frcti->probe = false; } |