diff options
Diffstat (limited to 'trafgen.c')
| -rw-r--r-- | trafgen.c | 38 |
1 files changed, 22 insertions, 16 deletions
@@ -498,7 +498,7 @@ static int xmit_smoke_probe(int icmp_sock, struct ctx *ctx) return -1; } -static void xmit_slowpath_or_die(struct ctx *ctx, int cpu) +static void xmit_slowpath_or_die(struct ctx *ctx, int cpu, unsigned long orig_num) { int ret, icmp_sock = -1; unsigned long num = 1, i = 0; @@ -513,6 +513,8 @@ static void xmit_slowpath_or_die(struct ctx *ctx, int cpu) if (ctx->num > 0) num = ctx->num; + if (ctx->num == 0 && orig_num > 0) + num = 0; if (ctx->smoke_test) icmp_sock = xmit_smoke_setup(ctx); @@ -521,7 +523,7 @@ static void xmit_slowpath_or_die(struct ctx *ctx, int cpu) bug_on(gettimeofday(&start, NULL)); - while (likely(sigint == 0) && likely(num > 0)) { + while (likely(sigint == 0) && likely(num > 0) && likely(plen > 0)) { pktd = &packet_dyn[i]; if (pktd->clen + pktd->rlen + pktd->slen) { apply_counter(i); @@ -584,7 +586,7 @@ retry: stats[cpu].state |= CPU_STATS_STATE_RES; } -static void xmit_fastpath_or_die(struct ctx *ctx, int cpu) +static void xmit_fastpath_or_die(struct ctx *ctx, int cpu, unsigned long orig_num) { int ifindex = device_ifindex(ctx->device); uint8_t *out = NULL; @@ -615,13 +617,15 @@ static void xmit_fastpath_or_die(struct ctx *ctx, int cpu) interval = ctx->kpull; if (ctx->num > 0) num = ctx->num; + if (ctx->num == 0 && orig_num > 0) + num = 0; set_itimer_interval_value(&itimer, 0, interval); setitimer(ITIMER_REAL, &itimer, NULL); bug_on(gettimeofday(&start, NULL)); - while (likely(sigint == 0) && likely(num > 0)) { + while (likely(sigint == 0) && likely(num > 0) && likely(plen > 0)) { while (user_may_pull_from_tx(tx_ring.frames[it].iov_base) && likely(num > 0)) { hdr = tx_ring.frames[it].iov_base; out = ((uint8_t *) hdr) + TPACKET2_HDRLEN - sizeof(struct sockaddr_ll); @@ -694,7 +698,9 @@ static unsigned long __wait_and_sum_others(struct ctx *ctx, int cpu) if (i == cpu) continue; - while ((__get_state(i) & CPU_STATS_STATE_CFG) == 0 && + while ((__get_state(i) & + (CPU_STATS_STATE_CFG | + CPU_STATS_STATE_RES)) == 0 && sigint == 0) sched_yield(); @@ -714,7 +720,9 @@ static void __correct_global_delta(struct ctx *ctx, int cpu, unsigned long orig) if (i == cpu) continue; - while ((__get_state(i) & CPU_STATS_STATE_CHK) == 0 && + while ((__get_state(i) & + (CPU_STATS_STATE_CHK | + CPU_STATS_STATE_RES)) == 0 && sigint == 0) sched_yield(); @@ -778,7 +786,7 @@ static int xmit_packet_precheck(struct ctx *ctx, int cpu) if (plen == 0) { __set_state(cpu, CPU_STATS_STATE_RES); - return -1; + return 0; } for (mtu = device_mtu(ctx->device), i = 0; i < plen; ++i) { @@ -792,7 +800,7 @@ static int xmit_packet_precheck(struct ctx *ctx, int cpu) } static void main_loop(struct ctx *ctx, char *confname, bool slow, - int cpu, bool invoke_cpp) + int cpu, bool invoke_cpp, unsigned long orig_num) { compile_packets(confname, ctx->verbose, cpu, invoke_cpp); if (xmit_packet_precheck(ctx, cpu) < 0) @@ -816,9 +824,9 @@ static void main_loop(struct ctx *ctx, char *confname, bool slow, sock = pf_socket(); if (slow) - xmit_slowpath_or_die(ctx, cpu); + xmit_slowpath_or_die(ctx, cpu, orig_num); else - xmit_fastpath_or_die(ctx, cpu); + xmit_fastpath_or_die(ctx, cpu, orig_num); close(sock); @@ -845,7 +853,7 @@ int main(int argc, char **argv) bool slow = false, invoke_cpp = false, reseed = true; int c, opt_index, i, j, vals[4] = {0}, irq; char *confname = NULL, *ptr; - unsigned long cpus_tmp; + unsigned long cpus_tmp, orig_num = 0; unsigned long long tx_packets, tx_bytes; struct ctx ctx; @@ -918,7 +926,8 @@ int main(int argc, char **argv) reseed = false; break; case 'n': - ctx.num = strtoul(optarg, NULL, 0); + orig_num = strtoul(optarg, NULL, 0); + ctx.num = orig_num; break; case 't': slow = true; @@ -1008,9 +1017,6 @@ int main(int argc, char **argv) irq = device_irq_number(ctx.device); device_set_irq_affinity_list(irq, 0, ctx.cpus - 1); - if (ctx.num > 0 && ctx.num <= ctx.cpus) - ctx.cpus = 1; - stats = setup_shared_var(ctx.cpus); for (i = 0; i < ctx.cpus; i++) { @@ -1023,7 +1029,7 @@ int main(int argc, char **argv) srand(seed); cpu_affinity(i); - main_loop(&ctx, confname, slow, i, invoke_cpp); + main_loop(&ctx, confname, slow, i, invoke_cpp, orig_num); goto thread_out; case -1: |