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-rw-r--r--CMakeLists.txt4
-rw-r--r--src/irmd/main.c3
-rw-r--r--src/lib/config.h.in5
-rw-r--r--src/lib/frct.c20
-rw-r--r--src/lib/shm_rdrbuff.c2
-rw-r--r--src/lib/timerwheel.c38
6 files changed, 52 insertions, 20 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index eeea8f7d..c46d30c7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,8 +8,8 @@ project(ouroboros C)
include(GNUInstallDirs)
set(PACKAGE_VERSION_MAJOR 0)
-set(PACKAGE_VERSION_MINOR 18)
-set(PACKAGE_VERSION_PATCH 4)
+set(PACKAGE_VERSION_MINOR 19)
+set(PACKAGE_VERSION_PATCH 0)
set(PACKAGE_NAME "${CMAKE_PROJECT_NAME}")
set(PACKAGE_DESCRIPTION "The Ouroboros prototype")
diff --git a/src/irmd/main.c b/src/irmd/main.c
index fab9497d..6d7f7a2a 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -1401,6 +1401,9 @@ static int flow_alloc(pid_t pid,
int state;
uint8_t * hash;
+ log_info("Allocating flow for %d to %s.\n",
+ pid, dst);
+
ipcp = join ? get_ipcp_entry_by_layer(dst)
: get_ipcp_by_dst_name(dst, pid);
if (ipcp == NULL) {
diff --git a/src/lib/config.h.in b/src/lib/config.h.in
index 5c5b6caf..d534cf77 100644
--- a/src/lib/config.h.in
+++ b/src/lib/config.h.in
@@ -69,9 +69,8 @@
#define DU_BUFF_TAILSPACE @DU_BUFF_TAILSPACE@
/* Default Delta-t parameters */
-#define DELT_MPL (@DELTA_T_MPL@ * BILLION) /* ns */
-#define DELT_A (@DELTA_T_ACK@ * BILLION) /* ns */
-#define DELT_R (@DELTA_T_RTX@ * BILLION) /* ns */
+#define DELT_A (@DELTA_T_ACK@) /* ns */
+#define DELT_R (@DELTA_T_RTX@) /* ns */
#define DELT_ACK (@DELTA_T_ACK_DELAY@ * MILLION) /* ns */
diff --git a/src/lib/frct.c b/src/lib/frct.c
index e9ee7718..5540ad2e 100644
--- a/src/lib/frct.c
+++ b/src/lib/frct.c
@@ -53,6 +53,8 @@ struct frcti {
struct timespec t_probe; /* Probe time */
bool probe; /* Probe active */
+ size_t n_rtx; /* Number of rxm packets */
+
struct frct_cr snd_cr;
struct frct_cr rcv_cr;
@@ -130,7 +132,8 @@ static int frct_rib_read(const char * path,
"Receiver left window edge: %20u\n"
"Receiver right window edge: %20u\n"
"Receiver inactive (ns): %20ld\n"
- "Receiver last ack: %20u\n",
+ "Receiver last ack: %20u\n"
+ "Number of pkt retransmissions: %20zu\n",
frcti->mpl,
frcti->a,
frcti->r,
@@ -144,7 +147,8 @@ static int frct_rib_read(const char * path,
frcti->rcv_cr.lwe,
frcti->rcv_cr.rwe,
ts_diff_ns(&frcti->rcv_cr.act, &now),
- frcti->rcv_cr.seqno);
+ frcti->rcv_cr.seqno,
+ frcti->n_rtx);
pthread_rwlock_unlock(&flow->frcti->lock);
@@ -310,6 +314,10 @@ static struct frcti * frcti_create(int fd,
#ifdef PROC_FLOW_STATS
char frctstr[FRCT_NAME_STRLEN + 1];
#endif
+ mpl *= BILLION;
+ a *= BILLION;
+ r *= BILLION;
+
frcti = malloc(sizeof(*frcti));
if (frcti == NULL)
goto fail_malloc;
@@ -354,7 +362,9 @@ static struct frcti * frcti_create(int fd,
frcti->srtt = 0; /* Updated on first ACK */
frcti->mdev = 10 * MILLION; /* Initial rxm will be after 20 ms */
- frcti->rto = 20 * MILLION; /* Initial rxm will be after 20 ms */
+ frcti->rto = BILLION; /* Initial rxm will be after 1 s */
+
+ frcti->n_rtx = 0;
if (ai.flows[fd].qs.loss == 0) {
frcti->snd_cr.cflags |= FRCTFRTX | FRCTFLINGER;
@@ -739,7 +749,7 @@ static void rtt_estimator(struct frcti * frcti,
frcti->srtt = MAX(1000U, srtt);
frcti->mdev = MAX(100U, rttvar);
- frcti->rto = MAX(RTO_MIN, frcti->srtt + (frcti->mdev << 1));
+ frcti->rto = MAX(RTO_MIN, frcti->srtt + (frcti->mdev << 2));
}
static void __frcti_tick(void)
@@ -803,7 +813,7 @@ static void __frcti_rcv(struct frcti * frcti,
if (after(ackno, frcti->snd_cr.lwe))
frcti->snd_cr.lwe = ackno;
- if (frcti->probe && !before(frcti->rttseq, ackno)) {
+ if (frcti->probe && after(ackno, frcti->rttseq)) {
rtt_estimator(frcti, ts_diff_ns(&frcti->t_probe, &now));
frcti->probe = false;
}
diff --git a/src/lib/shm_rdrbuff.c b/src/lib/shm_rdrbuff.c
index e3552100..dfa45af6 100644
--- a/src/lib/shm_rdrbuff.c
+++ b/src/lib/shm_rdrbuff.c
@@ -578,7 +578,7 @@ uint8_t * shm_du_buff_head_release(struct shm_du_buff * sdb,
}
uint8_t * shm_du_buff_tail_release(struct shm_du_buff * sdb,
- size_t size)
+ size_t size)
{
assert(sdb);
assert(!(size > sdb->du_tail - sdb->du_head));
diff --git a/src/lib/timerwheel.c b/src/lib/timerwheel.c
index 5c0fbfa0..0a6e48e1 100644
--- a/src/lib/timerwheel.c
+++ b/src/lib/timerwheel.c
@@ -174,6 +174,7 @@ static void timerwheel_move(void)
uint32_t snd_lwe;
uint32_t rcv_lwe;
time_t rto;
+ size_t new_i;
r = list_entry(p, struct rxm, next);
@@ -205,26 +206,36 @@ static void timerwheel_move(void)
if (ts_to_ns(now) - r->t0 > r->frcti->r)
goto flow_down;
+ pthread_rwlock_wrlock(&r->frcti->lock);
+
if (r->frcti->probe
- && (r->frcti->rttseq + 1) == r->seqno)
+ && (r->frcti->rttseq == r->seqno)) {
r->frcti->probe = false;
+ r->frcti->rto += (rto >> 3);
+ }
+
+ r->frcti->n_rtx++;
+
+ pthread_rwlock_unlock(&r->frcti->lock);
#ifdef RXM_BLOCKING
#ifdef RXM_BUFFER_ON_HEAP
- if (ipcp_sdb_reserve(&sdb, r->pkt_len))
+ if (ipcp_sdb_reserve(&sdb, r->pkt_len) < 0)
#else
- if (ipcp_sdb_reserve(&sdb, r->tail - r->head))
+ if (ipcp_sdb_reserve(&sdb,
+ r->tail - r->head) < 0)
#endif
#else
#ifdef RXM_BUFFER_ON_HEAP
if (shm_rdrbuff_alloc(ai.rdrb, r->pkt_len, NULL,
- &sdb))
+ &sdb) < 0)
#else
if (shm_rdrbuff_alloc(ai.rdrb,
r->tail - r->head, NULL,
- &sdb))
+ &sdb) < 0)
#endif
#endif
goto reschedule; /* rbuff full */
+
idx = shm_du_buff_get_idx(sdb);
head = shm_du_buff_head(sdb);
@@ -248,15 +259,24 @@ static void timerwheel_move(void)
#endif
shm_flow_set_notify(f->set, f->flow_id,
FLOW_PKT);
+
reschedule:
- r->mul++;
+ rslot = (rto << r->mul++) >> (RXMQ_RES * i);
+
+ new_i = i;
+ while (rslot >= RXMQ_SLOTS) {
+ ++ new_i;
+ rslot >>= RXMQ_BUMP;
+ }
+
+ if (new_i >= RXMQ_LVLS) /* Can't reschedule */
+ continue;
/* Schedule at least in the next time slot. */
- rslot = (rxm_slot
- + MAX(((rto * r->mul) >> RXMQ_RES), 1))
+ rslot = ((rxm_slot >> (RXMQ_BUMP * (new_i - 1))) + MAX(rslot, 1))
& (RXMQ_SLOTS - 1);
- list_add_tail(&r->next, &rw.rxms[i][rslot]);
+ list_add_tail(&r->next, &rw.rxms[new_i][rslot]);
continue;
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-30 22:08:03 +0000