4 * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * version: DPDK.L.1.2.3-3
44 #include <sys/queue.h>
46 #include <netinet/ip.h>
48 #include <rte_common.h>
49 #include <rte_memory.h>
50 #include <rte_memzone.h>
51 #include <rte_tailq.h>
53 #include <rte_byteorder.h>
54 #include <rte_launch.h>
55 #include <rte_per_lcore.h>
56 #include <rte_lcore.h>
57 #include <rte_branch_prediction.h>
58 #include <rte_atomic.h>
61 #include <rte_debug.h>
62 #include <rte_mempool.h>
63 #include <rte_memcpy.h>
65 #include <rte_ether.h>
66 #include <rte_interrupts.h>
68 #include <rte_ethdev.h>
69 #include <rte_byteorder.h>
70 #include <rte_malloc.h>
71 #include <rte_hash_crc.h>
72 #include <rte_fbk_hash.h>
73 #include <rte_string_fns.h>
81 * When doing reads from the NIC or the client queues,
84 #define PACKET_READ_SIZE 32
87 * Local buffers to put packets in, used to send packets in bursts to the
90 struct client_rx_buf {
91 struct rte_mbuf *buffer[PACKET_READ_SIZE];
95 /* One buffer per client rx queue - dynamically allocate array */
96 static struct client_rx_buf *cl_rx_buf;
99 get_printable_mac_addr(uint8_t port)
101 static const char err_address[] = "00:00:00:00:00:00";
102 static char addresses[RTE_MAX_ETHPORTS][sizeof(err_address)];
104 if (unlikely(port >= RTE_MAX_ETHPORTS))
106 if (unlikely(addresses[port][0]=='\0')){
107 struct ether_addr mac;
108 rte_eth_macaddr_get(port, &mac);
109 rte_snprintf(addresses[port], sizeof(addresses[port]),
110 "%02x:%02x:%02x:%02x:%02x:%02x\n",
111 mac.addr_bytes[0], mac.addr_bytes[1], mac.addr_bytes[2],
112 mac.addr_bytes[3], mac.addr_bytes[4], mac.addr_bytes[5]);
114 return addresses[port];
118 * This function displays the recorded statistics for each port
119 * and for each client. It uses ANSI terminal codes to clear
120 * screen when called. It is called from a single non-master
121 * thread in the server process, when the process is run with more
122 * than one lcore enabled.
125 do_stats_display(void)
128 const char clr[] = { 27, '[', '2', 'J', '\0' };
129 const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
130 uint64_t port_tx[RTE_MAX_ETHPORTS], port_tx_drop[RTE_MAX_ETHPORTS];
131 uint64_t client_tx[MAX_CLIENTS], client_tx_drop[MAX_CLIENTS];
133 /* to get TX stats, we need to do some summing calculations */
134 memset(port_tx, 0, sizeof(port_tx));
135 memset(port_tx_drop, 0, sizeof(port_tx_drop));
136 memset(client_tx, 0, sizeof(client_tx));
137 memset(client_tx_drop, 0, sizeof(client_tx_drop));
139 for (i = 0; i < num_clients; i++){
140 const volatile struct tx_stats *tx = &ports->tx_stats[i];
141 for (j = 0; j < ports->num_ports; j++){
142 /* assign to local variables here, save re-reading volatile vars */
143 const uint64_t tx_val = tx->tx[j];
144 const uint64_t drop_val = tx->tx_drop[j];
145 port_tx[j] += tx_val;
146 port_tx_drop[j] += drop_val;
147 client_tx[i] += tx_val;
148 client_tx_drop[i] += drop_val;
152 /* Clear screen and move to top left */
153 printf("%s%s", clr, topLeft);
157 for (i = 0; i < ports->num_ports; i++)
158 printf("Port %u: '%s'\t", (unsigned)ports->id[i],
159 get_printable_mac_addr(ports->id[i]));
161 for (i = 0; i < ports->num_ports; i++){
162 printf("Port %u - rx: %9"PRIu64"\t"
164 (unsigned)ports->id[i], ports->rx_stats.rx[i],
168 printf("\nCLIENTS\n");
170 for (i = 0; i < num_clients; i++){
171 const unsigned long long rx = clients[i].stats.rx;
172 const unsigned long long rx_drop = clients[i].stats.rx_drop;
173 printf("Client %2u - rx: %9llu, rx_drop: %9llu\n"
174 " tx: %9"PRIu64", tx_drop: %9"PRIu64"\n",
175 i, rx, rx_drop, client_tx[i], client_tx_drop[i]);
182 * The function called from each non-master lcore used by the process.
183 * The test_and_set function is used to randomly pick a single lcore on which
184 * the code to display the statistics will run. Otherwise, the code just
188 sleep_lcore(__attribute__((unused)) void *dummy)
190 /* Used to pick a display thread - static, so zero-initialised */
191 static rte_atomic32_t display_stats;
193 /* Only one core should display stats */
194 if (rte_atomic32_test_and_set(&display_stats)) {
195 const unsigned sleeptime = 1;
196 printf("Core %u displaying statistics\n", rte_lcore_id());
198 /* Longer initial pause so above printf is seen */
199 sleep(sleeptime * 3);
201 /* Loop forever: sleep always returns 0 or <= param */
202 while (sleep(sleeptime) <= sleeptime)
206 const unsigned sleeptime = 100;
207 printf("Putting core %u to sleep\n", rte_lcore_id());
208 while (sleep(sleeptime) <= sleeptime)
209 ; /* loop doing nothing */
215 * Function to set all the client statistic values to zero.
216 * Called at program startup.
223 for (i = 0; i < num_clients; i++)
224 clients[i].stats.rx = clients[i].stats.rx_drop = 0;
228 * send a burst of traffic to a client, assuming there are packets
229 * available to be sent to this client
232 flush_rx_queue(uint16_t client)
237 if (cl_rx_buf[client].count == 0)
240 cl = &clients[client];
241 if (rte_ring_enqueue_bulk(cl->rx_q, (void **)cl_rx_buf[client].buffer,
242 cl_rx_buf[client].count) != 0){
243 for (j = 0; j < cl_rx_buf[client].count; j++)
244 rte_pktmbuf_free(cl_rx_buf[client].buffer[j]);
245 cl->stats.rx_drop += cl_rx_buf[client].count;
248 cl->stats.rx += cl_rx_buf[client].count;
250 cl_rx_buf[client].count = 0;
254 * marks a packet down to be sent to a particular client process
257 enqueue_rx_packet(uint8_t client, struct rte_mbuf *buf)
259 cl_rx_buf[client].buffer[cl_rx_buf[client].count++] = buf;
263 * This function takes a group of packets and routes them
264 * individually to the client process. Very simply round-robins the packets
265 * without checking any of the packet contents.
268 process_packets(uint32_t port_num __rte_unused,
269 struct rte_mbuf *pkts[], uint16_t rx_count)
274 for (i = 0; i < rx_count; i++) {
275 enqueue_rx_packet(client, pkts[i]);
277 if (++client == num_clients)
281 for (i = 0; i < num_clients; i++)
286 * Function called by the master lcore of the DPDK process.
289 do_packet_forwarding(void)
291 unsigned port_num = 0; /* indexes the port[] array */
294 struct rte_mbuf *buf[PACKET_READ_SIZE];
298 rx_count = rte_eth_rx_burst(ports->id[port_num], 0, \
299 buf, PACKET_READ_SIZE);
300 ports->rx_stats.rx[port_num] += rx_count;
302 /* Now process the NIC packets read */
303 if (likely(rx_count > 0))
304 process_packets(port_num, buf, rx_count);
306 /* move to next port */
307 if (++port_num == ports->num_ports)
313 MAIN(int argc, char *argv[])
315 /* initialise the system */
316 if (init(argc, argv) < 0 )
318 RTE_LOG(INFO, APP, "Finished Process Init.\n");
320 cl_rx_buf = calloc(num_clients, sizeof(cl_rx_buf[0]));
322 /* clear statistics */
325 /* put all other cores to sleep bar master */
326 rte_eal_mp_remote_launch(sleep_lcore, NULL, SKIP_MASTER);
328 do_packet_forwarding();