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43 #include <rte_ethdev.h>
45 #include <rte_mempool.h>
46 #include <rte_string_fns.h>
47 #include "compat_netmap.h"
50 #define BUF_SIZE RTE_MBUF_DEFAULT_DATAROOM
51 #define MBUF_DATA_SIZE (BUF_SIZE + RTE_PKTMBUF_HEADROOM)
53 #define MBUF_PER_POOL 8192
55 struct rte_eth_conf eth_conf = {
65 .mq_mode = ETH_MQ_TX_NONE,
69 #define MAX_QUEUE_NUM 1
70 #define RX_QUEUE_NUM 1
71 #define TX_QUEUE_NUM 1
73 #define MAX_DESC_NUM 0x400
74 #define RX_DESC_NUM 0x100
75 #define TX_DESC_NUM 0x200
77 #define RX_SYNC_NUM 0x20
78 #define TX_SYNC_NUM 0x20
80 struct rte_netmap_port_conf port_conf = {
81 .eth_conf = ð_conf,
82 .socket_id = SOCKET_ID_ANY,
83 .nr_tx_rings = TX_QUEUE_NUM,
84 .nr_rx_rings = RX_QUEUE_NUM,
85 .nr_tx_slots = TX_DESC_NUM,
86 .nr_rx_slots = RX_DESC_NUM,
87 .tx_burst = TX_SYNC_NUM,
88 .rx_burst = RX_SYNC_NUM,
91 struct rte_netmap_conf netmap_conf = {
92 .socket_id = SOCKET_ID_ANY,
93 .max_bufsz = BUF_SIZE,
94 .max_rings = MAX_QUEUE_NUM,
95 .max_slots = MAX_DESC_NUM,
100 #define MAX_PORT_NUM 2
104 struct netmap_if *nmif;
105 struct netmap_ring *rx_ring;
106 struct netmap_ring *tx_ring;
113 struct netmap_port p[MAX_PORT_NUM];
118 usage(const char *prgname)
120 fprintf(stderr, "Usage: %s [EAL args] -- [OPTION]...\n"
121 "-h, --help \t Show this help message and exit\n"
122 "-i INTERFACE_A \t Interface (DPDK port number) to use\n"
123 "[ -i INTERFACE_B \t Interface (DPDK port number) to use ]\n",
128 parse_portid(const char *portid_str)
133 id = strtoul(portid_str, &end, 10);
135 if (end == portid_str || *end != '\0' || id > RTE_MAX_ETHPORTS)
136 rte_exit(EXIT_FAILURE, "Invalid port number\n");
142 parse_args(int argc, char **argv)
146 while ((opt = getopt(argc, argv, "hi:")) != -1) {
150 rte_exit(EXIT_SUCCESS, "exiting...");
153 if (ports.num >= RTE_DIM(ports.p)) {
155 rte_exit(EXIT_FAILURE, "configs with %u "
156 "ports are not supported\n",
161 ports.p[ports.num].str = optarg;
162 ports.p[ports.num].id = parse_portid(optarg);
167 rte_exit(EXIT_FAILURE, "invalid option: %c\n", opt);
174 static void sigint_handler(__rte_unused int sig)
177 signal(SIGINT, SIG_DFL);
180 static void move(int n, struct netmap_ring *rx, struct netmap_ring *tx)
185 tmp = tx->slot[tx->cur].buf_idx;
187 tx->slot[tx->cur].buf_idx = rx->slot[rx->cur].buf_idx;
188 tx->slot[tx->cur].len = rx->slot[rx->cur].len;
189 tx->slot[tx->cur].flags |= NS_BUF_CHANGED;
190 tx->cur = NETMAP_RING_NEXT(tx, tx->cur);
193 rx->slot[rx->cur].buf_idx = tmp;
194 rx->slot[rx->cur].flags |= NS_BUF_CHANGED;
195 rx->cur = NETMAP_RING_NEXT(rx, rx->cur);
201 netmap_port_open(uint32_t idx)
204 struct netmap_port *port;
207 port = ports.p + idx;
209 port->fd = rte_netmap_open("/dev/netmap", O_RDWR);
211 snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
212 req.nr_version = NETMAP_API;
215 err = rte_netmap_ioctl(port->fd, NIOCGINFO, &req);
217 printf("[E] NIOCGINFO ioctl failed (error %d)\n", err);
221 snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
222 req.nr_version = NETMAP_API;
225 err = rte_netmap_ioctl(port->fd, NIOCREGIF, &req);
227 printf("[E] NIOCREGIF ioctl failed (error %d)\n", err);
231 /* mmap only once. */
232 if (ports.mem == NULL)
233 ports.mem = rte_netmap_mmap(NULL, req.nr_memsize,
234 PROT_WRITE | PROT_READ, MAP_PRIVATE, port->fd, 0);
236 if (ports.mem == MAP_FAILED) {
237 printf("[E] NETMAP mmap failed for fd: %d)\n", port->fd);
241 port->nmif = NETMAP_IF(ports.mem, req.nr_offset);
243 port->tx_ring = NETMAP_TXRING(port->nmif, 0);
244 port->rx_ring = NETMAP_RXRING(port->nmif, 0);
250 int main(int argc, char *argv[])
255 struct pollfd pollfd[MAX_PORT_NUM];
256 struct rte_mempool *pool;
257 struct netmap_ring *rx_ring, *tx_ring;
259 ret = rte_eal_init(argc, argv);
261 rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
266 parse_args(argc, argv);
269 rte_exit(EXIT_FAILURE, "no ports specified\n");
271 if (rte_eth_dev_count() < 1)
272 rte_exit(EXIT_FAILURE, "Not enough ethernet ports available\n");
274 pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL, 32, 0,
275 MBUF_DATA_SIZE, rte_socket_id());
277 rte_exit(EXIT_FAILURE, "Couldn't create mempool\n");
279 netmap_conf.socket_id = rte_socket_id();
280 err = rte_netmap_init(&netmap_conf);
283 rte_exit(EXIT_FAILURE,
284 "Couldn't initialize librte_compat_netmap\n");
286 printf("librte_compat_netmap initialized\n");
288 port_conf.pool = pool;
289 port_conf.socket_id = rte_socket_id();
291 for (i = 0; i != ports.num; i++) {
293 err = rte_netmap_init_port(ports.p[i].id, &port_conf);
295 rte_exit(EXIT_FAILURE, "Couldn't setup port %hhu\n",
298 rte_eth_promiscuous_enable(ports.p[i].id);
301 for (i = 0; i != ports.num; i++) {
303 err = netmap_port_open(i);
305 rte_exit(EXIT_FAILURE, "Couldn't set port %hhu "
306 "under NETMAP control\n",
310 printf("Port %hhu now in Netmap mode\n", ports.p[i].id);
313 memset(pollfd, 0, sizeof(pollfd));
315 for (i = 0; i != ports.num; i++) {
316 pollfd[i].fd = ports.p[i].fd;
317 pollfd[i].events = POLLIN | POLLOUT;
320 signal(SIGINT, sigint_handler);
322 pmsk = ports.num - 1;
324 printf("Bridge up and running!\n");
329 pollfd[0].revents = 0;
330 pollfd[1].revents = 0;
332 ret = rte_netmap_poll(pollfd, ports.num, 0);
335 printf("[E] poll returned with error %d\n", ret);
338 if (((pollfd[0].revents | pollfd[1].revents) & POLLERR) != 0) {
339 printf("POLLERR!\n");
342 if ((pollfd[0].revents & POLLIN) != 0 &&
343 (pollfd[pmsk].revents & POLLOUT) != 0) {
345 rx_ring = ports.p[0].rx_ring;
346 tx_ring = ports.p[pmsk].tx_ring;
348 n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
349 move(n_pkts, rx_ring, tx_ring);
352 if (pmsk != 0 && (pollfd[pmsk].revents & POLLIN) != 0 &&
353 (pollfd[0].revents & POLLOUT) != 0) {
355 rx_ring = ports.p[pmsk].rx_ring;
356 tx_ring = ports.p[0].tx_ring;
358 n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
359 move(n_pkts, rx_ring, tx_ring);
363 printf("Bridge stopped!\n");
365 for (i = 0; i != ports.num; i++) {
366 err = rte_netmap_ioctl(ports.p[i].fd, NIOCUNREGIF, &req);
368 printf("[E] NIOCUNREGIF ioctl failed (error %d)\n",
372 printf("Port %hhu unregistered from Netmap mode\n", ports.p[i].id);
374 rte_netmap_close(ports.p[i].fd);