--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <fcntl.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#include <rte_eal.h>
+#include <rte_ethdev.h>
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_string_fns.h>
+#include "compat_netmap.h"
+
+
+#define BUF_SIZE RTE_MBUF_DEFAULT_DATAROOM
+#define MBUF_DATA_SIZE (BUF_SIZE + RTE_PKTMBUF_HEADROOM)
+
+#define MBUF_PER_POOL 8192
+
+struct rte_eth_conf eth_conf = {
+ .rxmode = {
+ .split_hdr_size = 0,
+ .header_split = 0,
+ .hw_ip_checksum = 0,
+ .hw_vlan_filter = 0,
+ .jumbo_frame = 0,
+ .hw_strip_crc = 0,
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+#define MAX_QUEUE_NUM 1
+#define RX_QUEUE_NUM 1
+#define TX_QUEUE_NUM 1
+
+#define MAX_DESC_NUM 0x400
+#define RX_DESC_NUM 0x100
+#define TX_DESC_NUM 0x200
+
+#define RX_SYNC_NUM 0x20
+#define TX_SYNC_NUM 0x20
+
+struct rte_netmap_port_conf port_conf = {
+ .eth_conf = ð_conf,
+ .socket_id = SOCKET_ID_ANY,
+ .nr_tx_rings = TX_QUEUE_NUM,
+ .nr_rx_rings = RX_QUEUE_NUM,
+ .nr_tx_slots = TX_DESC_NUM,
+ .nr_rx_slots = RX_DESC_NUM,
+ .tx_burst = TX_SYNC_NUM,
+ .rx_burst = RX_SYNC_NUM,
+};
+
+struct rte_netmap_conf netmap_conf = {
+ .socket_id = SOCKET_ID_ANY,
+ .max_bufsz = BUF_SIZE,
+ .max_rings = MAX_QUEUE_NUM,
+ .max_slots = MAX_DESC_NUM,
+};
+
+static int stop = 0;
+
+#define MAX_PORT_NUM 2
+
+struct netmap_port {
+ int fd;
+ struct netmap_if *nmif;
+ struct netmap_ring *rx_ring;
+ struct netmap_ring *tx_ring;
+ const char *str;
+ uint8_t id;
+};
+
+static struct {
+ uint32_t num;
+ struct netmap_port p[MAX_PORT_NUM];
+ void *mem;
+} ports;
+
+static void
+usage(const char *prgname)
+{
+ fprintf(stderr, "Usage: %s [EAL args] -- [OPTION]...\n"
+ "-h, --help \t Show this help message and exit\n"
+ "-i INTERFACE_A \t Interface (DPDK port number) to use\n"
+ "[ -i INTERFACE_B \t Interface (DPDK port number) to use ]\n",
+ prgname);
+}
+
+static uint8_t
+parse_portid(const char *portid_str)
+{
+ char *end;
+ unsigned id;
+
+ id = strtoul(portid_str, &end, 10);
+
+ if (end == portid_str || *end != '\0' || id > RTE_MAX_ETHPORTS)
+ rte_exit(EXIT_FAILURE, "Invalid port number\n");
+
+ return (uint8_t) id;
+}
+
+static int
+parse_args(int argc, char **argv)
+{
+ int opt;
+
+ while ((opt = getopt(argc, argv, "hi:")) != -1) {
+ switch (opt) {
+ case 'h':
+ usage(argv[0]);
+ rte_exit(EXIT_SUCCESS, "exiting...");
+ break;
+ case 'i':
+ if (ports.num >= RTE_DIM(ports.p)) {
+ usage(argv[0]);
+ rte_exit(EXIT_FAILURE, "configs with %u "
+ "ports are not supported\n",
+ ports.num + 1);
+
+ }
+
+ ports.p[ports.num].str = optarg;
+ ports.p[ports.num].id = parse_portid(optarg);
+ ports.num++;
+ break;
+ default:
+ usage(argv[0]);
+ rte_exit(EXIT_FAILURE, "invalid option: %c\n", opt);
+ }
+ }
+
+ return 0;
+}
+
+static void sigint_handler(__rte_unused int sig)
+{
+ stop = 1;
+ signal(SIGINT, SIG_DFL);
+}
+
+static void move(int n, struct netmap_ring *rx, struct netmap_ring *tx)
+{
+ uint32_t tmp;
+
+ while (n-- > 0) {
+ tmp = tx->slot[tx->cur].buf_idx;
+
+ tx->slot[tx->cur].buf_idx = rx->slot[rx->cur].buf_idx;
+ tx->slot[tx->cur].len = rx->slot[rx->cur].len;
+ tx->slot[tx->cur].flags |= NS_BUF_CHANGED;
+ tx->cur = NETMAP_RING_NEXT(tx, tx->cur);
+ tx->avail--;
+
+ rx->slot[rx->cur].buf_idx = tmp;
+ rx->slot[rx->cur].flags |= NS_BUF_CHANGED;
+ rx->cur = NETMAP_RING_NEXT(rx, rx->cur);
+ rx->avail--;
+ }
+}
+
+static int
+netmap_port_open(uint32_t idx)
+{
+ int err;
+ struct netmap_port *port;
+ struct nmreq req;
+
+ port = ports.p + idx;
+
+ port->fd = rte_netmap_open("/dev/netmap", O_RDWR);
+
+ snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
+ req.nr_version = NETMAP_API;
+ req.nr_ringid = 0;
+
+ err = rte_netmap_ioctl(port->fd, NIOCGINFO, &req);
+ if (err) {
+ printf("[E] NIOCGINFO ioctl failed (error %d)\n", err);
+ return err;
+ }
+
+ snprintf(req.nr_name, sizeof(req.nr_name), "%s", port->str);
+ req.nr_version = NETMAP_API;
+ req.nr_ringid = 0;
+
+ err = rte_netmap_ioctl(port->fd, NIOCREGIF, &req);
+ if (err) {
+ printf("[E] NIOCREGIF ioctl failed (error %d)\n", err);
+ return err;
+ }
+
+ /* mmap only once. */
+ if (ports.mem == NULL)
+ ports.mem = rte_netmap_mmap(NULL, req.nr_memsize,
+ PROT_WRITE | PROT_READ, MAP_PRIVATE, port->fd, 0);
+
+ if (ports.mem == MAP_FAILED) {
+ printf("[E] NETMAP mmap failed for fd: %d)\n", port->fd);
+ return -ENOMEM;
+ }
+
+ port->nmif = NETMAP_IF(ports.mem, req.nr_offset);
+
+ port->tx_ring = NETMAP_TXRING(port->nmif, 0);
+ port->rx_ring = NETMAP_RXRING(port->nmif, 0);
+
+ return 0;
+}
+
+
+int main(int argc, char *argv[])
+{
+ int err, ret;
+ uint32_t i, pmsk;
+ struct nmreq req;
+ struct pollfd pollfd[MAX_PORT_NUM];
+ struct rte_mempool *pool;
+ struct netmap_ring *rx_ring, *tx_ring;
+
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Cannot initialize EAL\n");
+
+ argc -= ret;
+ argv += ret;
+
+ parse_args(argc, argv);
+
+ if (ports.num == 0)
+ rte_exit(EXIT_FAILURE, "no ports specified\n");
+
+ if (rte_eth_dev_count() < 1)
+ rte_exit(EXIT_FAILURE, "Not enough ethernet ports available\n");
+
+ pool = rte_pktmbuf_pool_create("mbuf_pool", MBUF_PER_POOL, 32, 0,
+ MBUF_DATA_SIZE, rte_socket_id());
+ if (pool == NULL)
+ rte_exit(EXIT_FAILURE, "Couldn't create mempool\n");
+
+ netmap_conf.socket_id = rte_socket_id();
+ err = rte_netmap_init(&netmap_conf);
+
+ if (err < 0)
+ rte_exit(EXIT_FAILURE,
+ "Couldn't initialize librte_compat_netmap\n");
+ else
+ printf("librte_compat_netmap initialized\n");
+
+ port_conf.pool = pool;
+ port_conf.socket_id = rte_socket_id();
+
+ for (i = 0; i != ports.num; i++) {
+
+ err = rte_netmap_init_port(ports.p[i].id, &port_conf);
+ if (err < 0)
+ rte_exit(EXIT_FAILURE, "Couldn't setup port %hhu\n",
+ ports.p[i].id);
+
+ rte_eth_promiscuous_enable(ports.p[i].id);
+ }
+
+ for (i = 0; i != ports.num; i++) {
+
+ err = netmap_port_open(i);
+ if (err) {
+ rte_exit(EXIT_FAILURE, "Couldn't set port %hhu "
+ "under NETMAP control\n",
+ ports.p[i].id);
+ }
+ else
+ printf("Port %hhu now in Netmap mode\n", ports.p[i].id);
+ }
+
+ memset(pollfd, 0, sizeof(pollfd));
+
+ for (i = 0; i != ports.num; i++) {
+ pollfd[i].fd = ports.p[i].fd;
+ pollfd[i].events = POLLIN | POLLOUT;
+ }
+
+ signal(SIGINT, sigint_handler);
+
+ pmsk = ports.num - 1;
+
+ printf("Bridge up and running!\n");
+
+ while (!stop) {
+ uint32_t n_pkts;
+
+ pollfd[0].revents = 0;
+ pollfd[1].revents = 0;
+
+ ret = rte_netmap_poll(pollfd, ports.num, 0);
+ if (ret < 0) {
+ stop = 1;
+ printf("[E] poll returned with error %d\n", ret);
+ }
+
+ if (((pollfd[0].revents | pollfd[1].revents) & POLLERR) != 0) {
+ printf("POLLERR!\n");
+ }
+
+ if ((pollfd[0].revents & POLLIN) != 0 &&
+ (pollfd[pmsk].revents & POLLOUT) != 0) {
+
+ rx_ring = ports.p[0].rx_ring;
+ tx_ring = ports.p[pmsk].tx_ring;
+
+ n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
+ move(n_pkts, rx_ring, tx_ring);
+ }
+
+ if (pmsk != 0 && (pollfd[pmsk].revents & POLLIN) != 0 &&
+ (pollfd[0].revents & POLLOUT) != 0) {
+
+ rx_ring = ports.p[pmsk].rx_ring;
+ tx_ring = ports.p[0].tx_ring;
+
+ n_pkts = RTE_MIN(rx_ring->avail, tx_ring->avail);
+ move(n_pkts, rx_ring, tx_ring);
+ }
+ }
+
+ printf("Bridge stopped!\n");
+
+ for (i = 0; i != ports.num; i++) {
+ err = rte_netmap_ioctl(ports.p[i].fd, NIOCUNREGIF, &req);
+ if (err) {
+ printf("[E] NIOCUNREGIF ioctl failed (error %d)\n",
+ err);
+ }
+ else
+ printf("Port %hhu unregistered from Netmap mode\n", ports.p[i].id);
+
+ rte_netmap_close(ports.p[i].fd);
+ }
+ return 0;
+}
Code Review / deb_dpdk.git / blobdiff