1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
14 #include <rte_ethdev.h>
16 #include <rte_mempool.h>
17 #include <rte_string_fns.h>
18 #include "compat_netmap.h"
21 #define BUF_SIZE RTE_MBUF_DEFAULT_DATAROOM
22 #define MBUF_DATA_SIZE (BUF_SIZE + RTE_PKTMBUF_HEADROOM)
24 #define MBUF_PER_POOL 8192
26 struct rte_eth_conf eth_conf = {
31 .mq_mode = ETH_MQ_TX_NONE,
35 #define MAX_QUEUE_NUM 1
36 #define RX_QUEUE_NUM 1
37 #define TX_QUEUE_NUM 1
39 #define MAX_DESC_NUM 0x400
40 #define RX_DESC_NUM 0x100
41 #define TX_DESC_NUM 0x200
43 #define RX_SYNC_NUM 0x20
44 #define TX_SYNC_NUM 0x20
46 struct rte_netmap_port_conf port_conf = {
47 .eth_conf = ð_conf,
48 .socket_id = SOCKET_ID_ANY,
49 .nr_tx_rings = TX_QUEUE_NUM,
50 .nr_rx_rings = RX_QUEUE_NUM,
51 .nr_tx_slots = TX_DESC_NUM,
52 .nr_rx_slots = RX_DESC_NUM,
53 .tx_burst = TX_SYNC_NUM,
54 .rx_burst = RX_SYNC_NUM,
57 struct rte_netmap_conf netmap_conf = {
58 .socket_id = SOCKET_ID_ANY,
59 .max_bufsz = BUF_SIZE,
60 .max_rings = MAX_QUEUE_NUM,
61 .max_slots = MAX_DESC_NUM,
66 #define MAX_PORT_NUM 2
70 struct netmap_if *nmif;
71 struct netmap_ring *rx_ring;
72 struct netmap_ring *tx_ring;
79 struct netmap_port p[MAX_PORT_NUM];
84 usage(const char *prgname)
86 fprintf(stderr, "Usage: %s [EAL args] -- [OPTION]...\n"
87 "-h, --help \t Show this help message and exit\n"
88 "-i INTERFACE_A \t Interface (DPDK port number) to use\n"
89 "[ -i INTERFACE_B \t Interface (DPDK port number) to use ]\n",
94 parse_portid(const char *portid_str)
99 id = strtoul(portid_str, &end, 10);
101 if (end == portid_str || *end != '\0' || id > RTE_MAX_ETHPORTS)
102 rte_exit(EXIT_FAILURE, "Invalid port number\n");
108 parse_args(int argc, char **argv)
112 while ((opt = getopt(argc, argv, "hi:")) != -1) {
116 rte_exit(EXIT_SUCCESS, "exiting...");
119 if (ports.num >= RTE_DIM(ports.p)) {
121 rte_exit(EXIT_FAILURE, "configs with %u "
122 "ports are not supported\n",
127 ports.p[ports.num].str = optarg;
128 ports.p[ports.num].id = parse_portid(optarg);
133 rte_exit(EXIT_FAILURE, "invalid option: %c\n", opt);
140 static void sigint_handler(__rte_unused int sig)
143 signal(SIGINT, SIG_DFL);
146 static void move(int n, struct netmap_ring *rx, struct netmap_ring *tx)
151 tmp = tx->slot[tx->cur].buf_idx;
153 tx->slot[tx->cur].buf_idx = rx->slot[rx->cur].buf_idx;
154 tx->slot[tx->cur].len = rx->slot[rx->cur].len;
155 tx->slot[tx->cur].flags |= NS_BUF_CHANGED;
156 tx->cur = NETMAP_RING_NEXT(tx, tx->cur);
159 rx->slot[rx->cur].buf_idx = tmp;
160 rx->slot[rx->cur].flags |= NS_BUF_CHANGED;
161 rx->cur = NETMAP_RING_NEXT(rx, rx->cur);
167 netmap_port_open(uint32_t idx)
170 struct netmap_port *port;
173 port = ports.p + idx;
175 port->fd = rte_netmap_open("/dev/netmap", O_RDWR);
177 snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
178 req.nr_version = NETMAP_API;
181 err = rte_netmap_ioctl(port->fd, NIOCGINFO, &req);
183 printf("[E] NIOCGINFO ioctl failed (error %d)\n", err);
187 snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
188 req.nr_version = NETMAP_API;
191 err = rte_netmap_ioctl(port->fd, NIOCREGIF, &req);
193 printf("[E] NIOCREGIF ioctl failed (error %d)\n", err);
197 /* mmap only once. */
198 if (ports.mem == NULL)
199 ports.mem = rte_netmap_mmap(NULL, req.nr_memsize,
200 PROT_WRITE | PROT_READ, MAP_PRIVATE, port->fd, 0);
202 if (ports.mem == MAP_FAILED) {
203 printf("[E] NETMAP mmap failed for fd: %d)\n", port->fd);
207 port->nmif = NETMAP_IF(ports.mem, req.nr_offset);
209 port->tx_ring = NETMAP_TXRING(port->nmif, 0);
210 port->rx_ring = NETMAP_RXRING(port->nmif, 0);
216 int main(int argc, char *argv[])
221 struct pollfd pollfd[MAX_PORT_NUM];
222 struct rte_mempool *pool;
223 struct netmap_ring *rx_ring, *tx_ring;
225 ret = rte_eal_init(argc, argv);
227 rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
232 parse_args(argc, argv);
235 rte_exit(EXIT_FAILURE, "no ports specified\n");
237 if (rte_eth_dev_count_avail() < 1)
238 rte_exit(EXIT_FAILURE, "Not enough ethernet ports available\n");
240 pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL, 32, 0,
241 MBUF_DATA_SIZE, rte_socket_id());
243 rte_exit(EXIT_FAILURE, "Couldn't create mempool\n");
245 netmap_conf.socket_id = rte_socket_id();
246 err = rte_netmap_init(&netmap_conf);
249 rte_exit(EXIT_FAILURE,
250 "Couldn't initialize librte_compat_netmap\n");
252 printf("librte_compat_netmap initialized\n");
254 port_conf.pool = pool;
255 port_conf.socket_id = rte_socket_id();
257 for (i = 0; i != ports.num; i++) {
259 err = rte_netmap_init_port(ports.p[i].id, &port_conf);
261 rte_exit(EXIT_FAILURE, "Couldn't setup port %hhu\n",
264 rte_eth_promiscuous_enable(ports.p[i].id);
267 for (i = 0; i != ports.num; i++) {
269 err = netmap_port_open(i);
271 rte_exit(EXIT_FAILURE, "Couldn't set port %hhu "
272 "under NETMAP control\n",
276 printf("Port %hhu now in Netmap mode\n", ports.p[i].id);
279 memset(pollfd, 0, sizeof(pollfd));
281 for (i = 0; i != ports.num; i++) {
282 pollfd[i].fd = ports.p[i].fd;
283 pollfd[i].events = POLLIN | POLLOUT;
286 signal(SIGINT, sigint_handler);
288 pmsk = ports.num - 1;
290 printf("Bridge up and running!\n");
295 pollfd[0].revents = 0;
296 pollfd[1].revents = 0;
298 ret = rte_netmap_poll(pollfd, ports.num, 0);
301 printf("[E] poll returned with error %d\n", ret);
304 if (((pollfd[0].revents | pollfd[1].revents) & POLLERR) != 0) {
305 printf("POLLERR!\n");
308 if ((pollfd[0].revents & POLLIN) != 0 &&
309 (pollfd[pmsk].revents & POLLOUT) != 0) {
311 rx_ring = ports.p[0].rx_ring;
312 tx_ring = ports.p[pmsk].tx_ring;
314 n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
315 move(n_pkts, rx_ring, tx_ring);
318 if (pmsk != 0 && (pollfd[pmsk].revents & POLLIN) != 0 &&
319 (pollfd[0].revents & POLLOUT) != 0) {
321 rx_ring = ports.p[pmsk].rx_ring;
322 tx_ring = ports.p[0].tx_ring;
324 n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
325 move(n_pkts, rx_ring, tx_ring);
329 printf("Bridge stopped!\n");
331 for (i = 0; i != ports.num; i++) {
332 err = rte_netmap_ioctl(ports.p[i].fd, NIOCUNREGIF, &req);
334 printf("[E] NIOCUNREGIF ioctl failed (error %d)\n",
338 printf("Port %hhu unregistered from Netmap mode\n", ports.p[i].id);
340 rte_netmap_close(ports.p[i].fd);