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 rte_ether_addr mac;
74 if (unlikely(port >= RTE_MAX_ETHPORTS))
76 if (unlikely(addresses[port][0] == '\0')) {
77 ret = rte_eth_macaddr_get(port, &mac);
79 printf("Failed to get MAC address (port %u): %s\n",
80 port, rte_strerror(-ret));
84 snprintf(addresses[port], sizeof(addresses[port]),
85 "%02x:%02x:%02x:%02x:%02x:%02x\n",
86 mac.addr_bytes[0], mac.addr_bytes[1],
87 mac.addr_bytes[2], mac.addr_bytes[3],
88 mac.addr_bytes[4], mac.addr_bytes[5]);
90 return addresses[port];
94 * This function displays the recorded statistics for each port
95 * and for each node. It uses ANSI terminal codes to clear
96 * screen when called. It is called from a single non-master
97 * thread in the server process, when the process is run with more
98 * than one lcore enabled.
101 do_stats_display(void)
104 const char clr[] = {27, '[', '2', 'J', '\0'};
105 const char topLeft[] = {27, '[', '1', ';', '1', 'H', '\0'};
106 uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
107 uint64_t node_tx[MAX_NODES], node_tx_drop[MAX_NODES];
109 /* to get TX stats, we need to do some summing calculations */
110 memset(port_tx, 0, sizeof(port_tx));
111 memset(port_tx_drop, 0, sizeof(port_tx_drop));
112 memset(node_tx, 0, sizeof(node_tx));
113 memset(node_tx_drop, 0, sizeof(node_tx_drop));
115 for (i = 0; i < num_nodes; i++) {
116 const struct tx_stats *tx = &info->tx_stats[i];
118 for (j = 0; j < info->num_ports; j++) {
119 const uint64_t tx_val = tx->tx[info->id[j]];
120 const uint64_t drop_val = tx->tx_drop[info->id[j]];
122 port_tx[j] += tx_val;
123 port_tx_drop[j] += drop_val;
124 node_tx[i] += tx_val;
125 node_tx_drop[i] += drop_val;
129 /* Clear screen and move to top left */
130 printf("%s%s", clr, topLeft);
134 for (i = 0; i < info->num_ports; i++)
135 printf("Port %u: '%s'\t", (unsigned int)info->id[i],
136 get_printable_mac_addr(info->id[i]));
138 for (i = 0; i < info->num_ports; i++) {
139 printf("Port %u - rx: %9"PRIu64"\t"
141 (unsigned int)info->id[i], info->rx_stats.rx[i],
145 printf("\nSERVER\n");
147 printf("distributed: %9"PRIu64", drop: %9"PRIu64"\n",
148 flow_dist_stats.distributed, flow_dist_stats.drop);
152 for (i = 0; i < num_nodes; i++) {
153 const unsigned long long rx = nodes[i].stats.rx;
154 const unsigned long long rx_drop = nodes[i].stats.rx_drop;
155 const struct filter_stats *filter = &info->filter_stats[i];
157 printf("Node %2u - rx: %9llu, rx_drop: %9llu\n"
158 " tx: %9"PRIu64", tx_drop: %9"PRIu64"\n"
159 " filter_passed: %9"PRIu64", "
160 "filter_drop: %9"PRIu64"\n",
161 i, rx, rx_drop, node_tx[i], node_tx_drop[i],
162 filter->passed, filter->drop);
169 * The function called from each non-master lcore used by the process.
170 * The test_and_set function is used to randomly pick a single lcore on which
171 * the code to display the statistics will run. Otherwise, the code just
175 sleep_lcore(__attribute__((unused)) void *dummy)
177 /* Used to pick a display thread - static, so zero-initialised */
178 static rte_atomic32_t display_stats;
180 /* Only one core should display stats */
181 if (rte_atomic32_test_and_set(&display_stats)) {
182 const unsigned int sleeptime = 1;
184 printf("Core %u displaying statistics\n", rte_lcore_id());
186 /* Longer initial pause so above printf is seen */
187 sleep(sleeptime * 3);
189 /* Loop forever: sleep always returns 0 or <= param */
190 while (sleep(sleeptime) <= sleeptime)
197 * Function to set all the node statistic values to zero.
198 * Called at program startup.
205 for (i = 0; i < num_nodes; i++)
206 nodes[i].stats.rx = nodes[i].stats.rx_drop = 0;
210 * send a burst of traffic to a node, assuming there are packets
211 * available to be sent to this node
214 flush_rx_queue(uint16_t node)
219 if (cl_rx_buf[node].count == 0)
223 if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[node].buffer,
224 cl_rx_buf[node].count, NULL) != cl_rx_buf[node].count){
225 for (j = 0; j < cl_rx_buf[node].count; j++)
226 rte_pktmbuf_free(cl_rx_buf[node].buffer[j]);
227 cl->stats.rx_drop += cl_rx_buf[node].count;
229 cl->stats.rx += cl_rx_buf[node].count;
231 cl_rx_buf[node].count = 0;
235 * marks a packet down to be sent to a particular node process
238 enqueue_rx_packet(uint8_t node, struct rte_mbuf *buf)
240 cl_rx_buf[node].buffer[cl_rx_buf[node].count++] = buf;
244 * This function takes a group of packets and routes them
245 * individually to the node process. Very simply round-robins the packets
246 * without checking any of the packet contents.
249 process_packets(uint32_t port_num __rte_unused, struct rte_mbuf *pkts[],
250 uint16_t rx_count, unsigned int socket_id)
254 efd_value_t data[RTE_EFD_BURST_MAX];
255 const void *key_ptrs[RTE_EFD_BURST_MAX];
257 struct rte_ipv4_hdr *ipv4_hdr;
258 uint32_t ipv4_dst_ip[RTE_EFD_BURST_MAX];
260 for (i = 0; i < rx_count; i++) {
261 /* Handle IPv4 header.*/
262 ipv4_hdr = rte_pktmbuf_mtod_offset(pkts[i],
263 struct rte_ipv4_hdr *, sizeof(struct rte_ether_hdr));
264 ipv4_dst_ip[i] = ipv4_hdr->dst_addr;
265 key_ptrs[i] = (void *)&ipv4_dst_ip[i];
268 rte_efd_lookup_bulk(efd_table, socket_id, rx_count,
269 (const void **) key_ptrs, data);
270 for (i = 0; i < rx_count; i++) {
271 node = (uint8_t) ((uintptr_t)data[i]);
273 if (node >= num_nodes) {
275 * Node is out of range, which means that
276 * flow has not been inserted
278 flow_dist_stats.drop++;
279 rte_pktmbuf_free(pkts[i]);
281 flow_dist_stats.distributed++;
282 enqueue_rx_packet(node, pkts[i]);
286 for (i = 0; i < num_nodes; i++)
291 * Function called by the master lcore of the DPDK process.
294 do_packet_forwarding(void)
296 unsigned int port_num = 0; /* indexes the port[] array */
297 unsigned int socket_id = rte_socket_id();
300 struct rte_mbuf *buf[PACKET_READ_SIZE];
304 rx_count = rte_eth_rx_burst(info->id[port_num], 0,
305 buf, PACKET_READ_SIZE);
306 info->rx_stats.rx[port_num] += rx_count;
308 /* Now process the NIC packets read */
309 if (likely(rx_count > 0))
310 process_packets(port_num, buf, rx_count, socket_id);
312 /* move to next port */
313 if (++port_num == info->num_ports)
319 main(int argc, char *argv[])
321 /* initialise the system */
322 if (init(argc, argv) < 0)
324 RTE_LOG(INFO, APP, "Finished Process Init.\n");
326 cl_rx_buf = calloc(num_nodes, sizeof(cl_rx_buf[0]));
328 /* clear statistics */
331 /* put all other cores to sleep bar master */
332 rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
334 do_packet_forwarding();