1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2017 Intel Corporation
12 #include <sys/queue.h>
14 #include <netinet/ip.h>
16 #include <rte_common.h>
17 #include <rte_memory.h>
19 #include <rte_launch.h>
20 #include <rte_per_lcore.h>
21 #include <rte_lcore.h>
22 #include <rte_branch_prediction.h>
23 #include <rte_atomic.h>
26 #include <rte_debug.h>
27 #include <rte_mempool.h>
28 #include <rte_memcpy.h>
30 #include <rte_ether.h>
31 #include <rte_interrupts.h>
32 #include <rte_ethdev.h>
33 #include <rte_byteorder.h>
34 #include <rte_malloc.h>
35 #include <rte_string_fns.h>
44 * When doing reads from the NIC or the node queues,
47 #define PACKET_READ_SIZE 32
50 * Local buffers to put packets in, used to send packets in bursts to the
54 struct rte_mbuf *buffer[PACKET_READ_SIZE];
63 /* One buffer per node rx queue - dynamically allocate array */
64 static struct node_rx_buf *cl_rx_buf;
67 get_printable_mac_addr(uint16_t port)
69 static const char err_address[] = "00:00:00:00:00:00";
70 static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)];
71 struct ether_addr mac;
73 if (unlikely(port >= RTE_MAX_ETHPORTS))
75 if (unlikely(addresses[port][0] == '\0')) {
76 rte_eth_macaddr_get(port, &mac);
77 snprintf(addresses[port], sizeof(addresses[port]),
78 "%02x:%02x:%02x:%02x:%02x:%02x\n",
79 mac.addr_bytes[0], mac.addr_bytes[1],
80 mac.addr_bytes[2], mac.addr_bytes[3],
81 mac.addr_bytes[4], mac.addr_bytes[5]);
83 return addresses[port];
87 * This function displays the recorded statistics for each port
88 * and for each node. It uses ANSI terminal codes to clear
89 * screen when called. It is called from a single non-master
90 * thread in the server process, when the process is run with more
91 * than one lcore enabled.
94 do_stats_display(void)
97 const char clr[] = {27, '[', '2', 'J', '\0'};
98 const char topLeft[] = {27, '[', '1', ';', '1', 'H', '\0'};
99 uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
100 uint64_t node_tx[MAX_NODES], node_tx_drop[MAX_NODES];
102 /* to get TX stats, we need to do some summing calculations */
103 memset(port_tx, 0, sizeof(port_tx));
104 memset(port_tx_drop, 0, sizeof(port_tx_drop));
105 memset(node_tx, 0, sizeof(node_tx));
106 memset(node_tx_drop, 0, sizeof(node_tx_drop));
108 for (i = 0; i < num_nodes; i++) {
109 const struct tx_stats *tx = &info->tx_stats[i];
111 for (j = 0; j < info->num_ports; j++) {
112 const uint64_t tx_val = tx->tx[info->id[j]];
113 const uint64_t drop_val = tx->tx_drop[info->id[j]];
115 port_tx[j] += tx_val;
116 port_tx_drop[j] += drop_val;
117 node_tx[i] += tx_val;
118 node_tx_drop[i] += drop_val;
122 /* Clear screen and move to top left */
123 printf("%s%s", clr, topLeft);
127 for (i = 0; i < info->num_ports; i++)
128 printf("Port %u: '%s'\t", (unsigned int)info->id[i],
129 get_printable_mac_addr(info->id[i]));
131 for (i = 0; i < info->num_ports; i++) {
132 printf("Port %u - rx: %9"PRIu64"\t"
134 (unsigned int)info->id[i], info->rx_stats.rx[i],
138 printf("\nSERVER\n");
140 printf("distributed: %9"PRIu64", drop: %9"PRIu64"\n",
141 flow_dist_stats.distributed, flow_dist_stats.drop);
145 for (i = 0; i < num_nodes; i++) {
146 const unsigned long long rx = nodes[i].stats.rx;
147 const unsigned long long rx_drop = nodes[i].stats.rx_drop;
148 const struct filter_stats *filter = &info->filter_stats[i];
150 printf("Node %2u - rx: %9llu, rx_drop: %9llu\n"
151 " tx: %9"PRIu64", tx_drop: %9"PRIu64"\n"
152 " filter_passed: %9"PRIu64", "
153 "filter_drop: %9"PRIu64"\n",
154 i, rx, rx_drop, node_tx[i], node_tx_drop[i],
155 filter->passed, filter->drop);
162 * The function called from each non-master lcore used by the process.
163 * The test_and_set function is used to randomly pick a single lcore on which
164 * the code to display the statistics will run. Otherwise, the code just
168 sleep_lcore(__attribute__((unused)) void *dummy)
170 /* Used to pick a display thread - static, so zero-initialised */
171 static rte_atomic32_t display_stats;
173 /* Only one core should display stats */
174 if (rte_atomic32_test_and_set(&display_stats)) {
175 const unsigned int sleeptime = 1;
177 printf("Core %u displaying statistics\n", rte_lcore_id());
179 /* Longer initial pause so above printf is seen */
180 sleep(sleeptime * 3);
182 /* Loop forever: sleep always returns 0 or <= param */
183 while (sleep(sleeptime) <= sleeptime)
190 * Function to set all the node statistic values to zero.
191 * Called at program startup.
198 for (i = 0; i < num_nodes; i++)
199 nodes[i].stats.rx = nodes[i].stats.rx_drop = 0;
203 * send a burst of traffic to a node, assuming there are packets
204 * available to be sent to this node
207 flush_rx_queue(uint16_t node)
212 if (cl_rx_buf[node].count == 0)
216 if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[node].buffer,
217 cl_rx_buf[node].count, NULL) != cl_rx_buf[node].count){
218 for (j = 0; j < cl_rx_buf[node].count; j++)
219 rte_pktmbuf_free(cl_rx_buf[node].buffer[j]);
220 cl->stats.rx_drop += cl_rx_buf[node].count;
222 cl->stats.rx += cl_rx_buf[node].count;
224 cl_rx_buf[node].count = 0;
228 * marks a packet down to be sent to a particular node process
231 enqueue_rx_packet(uint8_t node, struct rte_mbuf *buf)
233 cl_rx_buf[node].buffer[cl_rx_buf[node].count++] = buf;
237 * This function takes a group of packets and routes them
238 * individually to the node process. Very simply round-robins the packets
239 * without checking any of the packet contents.
242 process_packets(uint32_t port_num __rte_unused, struct rte_mbuf *pkts[],
243 uint16_t rx_count, unsigned int socket_id)
247 efd_value_t data[RTE_EFD_BURST_MAX];
248 const void *key_ptrs[RTE_EFD_BURST_MAX];
250 struct ipv4_hdr *ipv4_hdr;
251 uint32_t ipv4_dst_ip[RTE_EFD_BURST_MAX];
253 for (i = 0; i < rx_count; i++) {
254 /* Handle IPv4 header.*/
255 ipv4_hdr = rte_pktmbuf_mtod_offset(pkts[i], struct ipv4_hdr *,
256 sizeof(struct ether_hdr));
257 ipv4_dst_ip[i] = ipv4_hdr->dst_addr;
258 key_ptrs[i] = (void *)&ipv4_dst_ip[i];
261 rte_efd_lookup_bulk(efd_table, socket_id, rx_count,
262 (const void **) key_ptrs, data);
263 for (i = 0; i < rx_count; i++) {
264 node = (uint8_t) ((uintptr_t)data[i]);
266 if (node >= num_nodes) {
268 * Node is out of range, which means that
269 * flow has not been inserted
271 flow_dist_stats.drop++;
272 rte_pktmbuf_free(pkts[i]);
274 flow_dist_stats.distributed++;
275 enqueue_rx_packet(node, pkts[i]);
279 for (i = 0; i < num_nodes; i++)
284 * Function called by the master lcore of the DPDK process.
287 do_packet_forwarding(void)
289 unsigned int port_num = 0; /* indexes the port[] array */
290 unsigned int socket_id = rte_socket_id();
293 struct rte_mbuf *buf[PACKET_READ_SIZE];
297 rx_count = rte_eth_rx_burst(info->id[port_num], 0,
298 buf, PACKET_READ_SIZE);
299 info->rx_stats.rx[port_num] += rx_count;
301 /* Now process the NIC packets read */
302 if (likely(rx_count > 0))
303 process_packets(port_num, buf, rx_count, socket_id);
305 /* move to next port */
306 if (++port_num == info->num_ports)
312 main(int argc, char *argv[])
314 /* initialise the system */
315 if (init(argc, argv) < 0)
317 RTE_LOG(INFO, APP, "Finished Process Init.\n");
319 cl_rx_buf = calloc(num_nodes, sizeof(cl_rx_buf[0]));
321 /* clear statistics */
324 /* put all other cores to sleep bar master */
325 rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
327 do_packet_forwarding();