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;
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)
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);
}
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]) {
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) {
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);
// 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;
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;
(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
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 = {
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