diff options
Diffstat (limited to 'VNFs/DPPD-PROX/handle_lat.c')
| -rw-r--r-- | VNFs/DPPD-PROX/handle_lat.c | 87 |
1 files changed, 84 insertions, 3 deletions
diff --git a/VNFs/DPPD-PROX/handle_lat.c b/VNFs/DPPD-PROX/handle_lat.c index 0c0e7b59..04a4848b 100644 --- a/VNFs/DPPD-PROX/handle_lat.c +++ b/VNFs/DPPD-PROX/handle_lat.c @@ -86,6 +86,15 @@ struct rx_pkt_meta_data { uint32_t bytes_after_in_bulk; }; +struct loss_buffer { + uint32_t packet_id; + uint32_t n; +}; + +struct flows { + uint32_t packet_id; +}; + struct task_lat { struct task_base base; uint64_t limit; @@ -111,11 +120,19 @@ struct task_lat { struct rx_pkt_meta_data *rx_pkt_meta; // Following fields are only used when starting or stopping, not in general runtime uint64_t *prev_tx_packet_index; + FILE *fp_loss; FILE *fp_rx; FILE *fp_tx; struct prox_port_cfg *port; uint64_t *bytes_to_tsc; uint64_t *previous_packet; + uint32_t loss_buffer_size; + struct loss_buffer *loss_buffer; + uint32_t loss_id; + uint32_t packet_id_in_flow_pos; + int32_t flow_id_pos; + uint32_t flow_count; + struct flows *flows; }; /* This function calculate the difference between rx and tx_time * Both values are uint32_t (see handle_lat_bulk) @@ -400,7 +417,14 @@ static void lat_stop(struct task_base *tbase) if (task->unique_id_pos) { task_lat_count_remaining_lost_packets(task); task_lat_reset_eld(task); + memset(task->previous_packet, 0, sizeof(task->previous_packet) * task->generator_count); } + if (task->loss_id && task->fp_loss) { + for (uint i = 0; i < task->loss_id; i++) { + fprintf(task->fp_loss, "packet %d: %d\n", task->loss_buffer[i].packet_id, task->loss_buffer[i].n); + } + } + task->lat_test->lost_packets = 0; if (task->latency_buffer) lat_write_latency_to_file(task); } @@ -474,6 +498,15 @@ static void lat_test_histogram_add(struct lat_test *lat_test, uint64_t lat_tsc) lat_test->buckets[bucket_id]++; } +static void lat_test_check_flow_ordering(struct task_lat *task, struct lat_test *lat_test, int32_t flow_id, uint32_t packet_id) +{ + if (packet_id < task->flows[flow_id].packet_id) { + lat_test->mis_ordered++; + lat_test->extent += task->flows[flow_id].packet_id - packet_id; + } + task->flows[flow_id].packet_id = packet_id; +} + static void lat_test_check_ordering(struct task_lat *task, struct lat_test *lat_test, uint32_t packet_id, uint8_t generator_id) { if (packet_id < task->previous_packet[generator_id]) { @@ -535,6 +568,7 @@ static void task_lat_store_lat(struct task_lat *task, uint64_t rx_packet_index, static int handle_lat_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uint16_t n_pkts) { struct task_lat *task = (struct task_lat *)tbase; + static int max_flows_printed = 0; int rc; if (n_pkts == 0) { @@ -623,6 +657,24 @@ static int handle_lat_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uin uint8_t generator_id; uint32_t packet_id; + int32_t flow_id = -1; + if (task->flow_id_pos) { + flow_id = *(int32_t *)(hdr + task->flow_id_pos); + if (unlikely(flow_id >= (int32_t)(task->flow_count))) { + flow_id = -1; + if (!max_flows_printed) { + plog_info("Too many flows - increase flow count (only printed once)\n"); + max_flows_printed = 1; + } + } + + } + if (task->packet_id_in_flow_pos && (flow_id != -1)) { + uint32_t packet_id_in_flow; + struct unique_id *unique_id = (struct unique_id *)(hdr + task->packet_id_in_flow_pos); + unique_id_get(unique_id, &generator_id, &packet_id_in_flow); + lat_test_check_flow_ordering(task, task->lat_test, flow_id + generator_id * task->generator_count, packet_id_in_flow); + } if (task->unique_id_pos) { struct unique_id *unique_id = (struct unique_id *)(hdr + task->unique_id_pos); unique_id_get(unique_id, &generator_id, &packet_id); @@ -634,9 +686,18 @@ static int handle_lat_bulk(struct task_base *tbase, struct rte_mbuf **mbufs, uin // Skip unexpected packet continue; } - lat_test_check_ordering(task, task->lat_test, packet_id, generator_id); + if (flow_id == -1) { + lat_test_check_ordering(task, task->lat_test, packet_id, generator_id); + } lat_test_check_duplicate(task, task->lat_test, packet_id, generator_id); - lat_test_add_lost(task->lat_test, task_lat_early_loss_detect(task, packet_id, generator_id)); + uint32_t loss = task_lat_early_loss_detect(task, packet_id, generator_id); + if (loss) { + lat_test_add_lost(task->lat_test, loss); + if (task->loss_id < task->loss_buffer_size) { + task->loss_buffer[task->loss_id].packet_id = packet_id; + task->loss_buffer[task->loss_id++].n = loss; + } + } } else { generator_id = 0; packet_id = task->rx_packet_index; @@ -756,6 +817,8 @@ static void init_task_lat(struct task_base *tbase, struct task_args *targ) task->accur_pos = targ->accur_pos; task->sig_pos = targ->sig_pos; task->sig = targ->sig; + task->packet_id_in_flow_pos = targ->packet_id_in_flow_pos; + task->flow_id_pos = targ->flow_id_pos; task->unique_id_pos = targ->packet_id_pos; task->latency_buffer_size = targ->latency_buffer_size; @@ -831,9 +894,20 @@ static void init_task_lat(struct task_base *tbase, struct task_args *targ) (uint8_t)(port - prox_port_cfg), 8 * bytes_per_hz / 1000000); } } + task->loss_buffer_size = targ->loss_buffer_size; + if (task->loss_buffer_size) { + char name[256]; + sprintf(name, "loss_%u.txt", targ->lconf->id); + task->fp_loss = fopen(name, "w+"); + PROX_PANIC(task->fp_loss == NULL, "Failed to open %s\n", name); + + task->loss_buffer = prox_zmalloc(task->loss_buffer_size * sizeof(struct loss_buffer), rte_lcore_to_socket_id(targ->lconf->id)); + PROX_PANIC(task->loss_buffer == NULL, + "Failed to allocate %lu bytes (in huge pages) for loss_buffer\n", task->loss_buffer_size * sizeof(struct loss_buffer)); + } task->bytes_to_tsc = prox_zmalloc(max_frame_size * sizeof(task->bytes_to_tsc[0]) * MAX_PKT_BURST, rte_lcore_to_socket_id(targ->lconf->id)); PROX_PANIC(task->bytes_to_tsc == NULL, - "Failed to allocate %u bytes (in huge pages) for bytes_to_tsc\n", max_frame_size); + "Failed to allocate %lu bytes (in huge pages) for bytes_to_tsc\n", max_frame_size * sizeof(task->bytes_to_tsc[0]) * MAX_PKT_BURST); // There are cases where hz estimate might be slighly over-estimated // This results in too much extrapolation @@ -844,6 +918,13 @@ static void init_task_lat(struct task_base *tbase, struct task_args *targ) else task->bytes_to_tsc[i] = (rte_get_tsc_hz() * i * 0.99) / bytes_per_hz; } + task->flow_count = targ->flow_count; + PROX_PANIC(task->flow_id_pos && (task->flow_count == 0), "flow_count must be configured when flow_id_pos is set\n"); + if (task->flow_count) { + task->flows = prox_zmalloc(task->flow_count * sizeof(struct flows) * task->generator_count, rte_lcore_to_socket_id(targ->lconf->id)); + PROX_PANIC(task->flows == NULL, + "Failed to allocate %lu bytes (in huge pages) for flows\n", task->flow_count * sizeof(struct flows) * task->generator_count); + } } static struct task_init task_init_lat = { |