1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2017 Intel Corporation
7 #include <linux/if_ether.h>
8 #include <linux/if_vlan.h>
9 #include <linux/virtio_net.h>
10 #include <linux/virtio_ring.h>
13 #include <sys/eventfd.h>
14 #include <sys/param.h>
17 #include <rte_atomic.h>
18 #include <rte_cycles.h>
19 #include <rte_ethdev.h>
21 #include <rte_string_fns.h>
22 #include <rte_malloc.h>
23 #include <rte_vhost.h>
26 #include <rte_pause.h>
32 #define MAX_QUEUES 128
35 /* the maximum number of external ports supported */
36 #define MAX_SUP_PORTS 1
38 #define MBUF_CACHE_SIZE 128
39 #define MBUF_DATA_SIZE RTE_MBUF_DEFAULT_BUF_SIZE
41 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
43 #define BURST_RX_WAIT_US 15 /* Defines how long we wait between retries on RX */
44 #define BURST_RX_RETRIES 4 /* Number of retries on RX. */
46 #define JUMBO_FRAME_MAX_SIZE 0x2600
48 /* State of virtio device. */
49 #define DEVICE_MAC_LEARNING 0
51 #define DEVICE_SAFE_REMOVE 2
53 /* Configurable number of RX/TX ring descriptors */
54 #define RTE_TEST_RX_DESC_DEFAULT 1024
55 #define RTE_TEST_TX_DESC_DEFAULT 512
57 #define INVALID_PORT_ID 0xFF
59 /* Maximum long option length for option parsing. */
60 #define MAX_LONG_OPT_SZ 64
62 /* mask of enabled ports */
63 static uint32_t enabled_port_mask = 0;
65 /* Promiscuous mode */
66 static uint32_t promiscuous;
68 /* number of devices/queues to support*/
69 static uint32_t num_queues = 0;
70 static uint32_t num_devices;
72 static struct rte_mempool *mbuf_pool;
75 /* Enable VM2VM communications. If this is disabled then the MAC address compare is skipped. */
82 static vm2vm_type vm2vm_mode = VM2VM_SOFTWARE;
85 static uint32_t enable_stats = 0;
86 /* Enable retries on RX. */
87 static uint32_t enable_retry = 1;
89 /* Disable TX checksum offload */
90 static uint32_t enable_tx_csum;
92 /* Disable TSO offload */
93 static uint32_t enable_tso;
95 static int client_mode;
97 static int builtin_net_driver;
99 static int async_vhost_driver;
101 static char dma_type[MAX_LONG_OPT_SZ];
103 /* Specify timeout (in useconds) between retries on RX. */
104 static uint32_t burst_rx_delay_time = BURST_RX_WAIT_US;
105 /* Specify the number of retries on RX. */
106 static uint32_t burst_rx_retry_num = BURST_RX_RETRIES;
108 /* Socket file paths. Can be set by user */
109 static char *socket_files;
110 static int nb_sockets;
112 /* empty vmdq configuration structure. Filled in programatically */
113 static struct rte_eth_conf vmdq_conf_default = {
115 .mq_mode = ETH_MQ_RX_VMDQ_ONLY,
118 * VLAN strip is necessary for 1G NIC such as I350,
119 * this fixes bug of ipv4 forwarding in guest can't
120 * forward pakets from one virtio dev to another virtio dev.
122 .offloads = DEV_RX_OFFLOAD_VLAN_STRIP,
126 .mq_mode = ETH_MQ_TX_NONE,
127 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
128 DEV_TX_OFFLOAD_TCP_CKSUM |
129 DEV_TX_OFFLOAD_VLAN_INSERT |
130 DEV_TX_OFFLOAD_MULTI_SEGS |
131 DEV_TX_OFFLOAD_TCP_TSO),
135 * should be overridden separately in code with
139 .nb_queue_pools = ETH_8_POOLS,
140 .enable_default_pool = 0,
143 .pool_map = {{0, 0},},
149 static unsigned lcore_ids[RTE_MAX_LCORE];
150 static uint16_t ports[RTE_MAX_ETHPORTS];
151 static unsigned num_ports = 0; /**< The number of ports specified in command line */
152 static uint16_t num_pf_queues, num_vmdq_queues;
153 static uint16_t vmdq_pool_base, vmdq_queue_base;
154 static uint16_t queues_per_pool;
156 const uint16_t vlan_tags[] = {
157 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007,
158 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015,
159 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023,
160 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031,
161 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039,
162 1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
163 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
164 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
167 /* ethernet addresses of ports */
168 static struct rte_ether_addr vmdq_ports_eth_addr[RTE_MAX_ETHPORTS];
170 static struct vhost_dev_tailq_list vhost_dev_list =
171 TAILQ_HEAD_INITIALIZER(vhost_dev_list);
173 static struct lcore_info lcore_info[RTE_MAX_LCORE];
175 /* Used for queueing bursts of TX packets. */
179 struct rte_mbuf *m_table[MAX_PKT_BURST];
182 /* TX queue for each data core. */
183 struct mbuf_table lcore_tx_queue[RTE_MAX_LCORE];
185 #define MBUF_TABLE_DRAIN_TSC ((rte_get_tsc_hz() + US_PER_S - 1) \
186 / US_PER_S * BURST_TX_DRAIN_US)
190 open_dma(const char *value)
192 if (strncmp(dma_type, "ioat", 4) == 0)
193 return open_ioat(value);
199 * Builds up the correct configuration for VMDQ VLAN pool map
200 * according to the pool & queue limits.
203 get_eth_conf(struct rte_eth_conf *eth_conf, uint32_t num_devices)
205 struct rte_eth_vmdq_rx_conf conf;
206 struct rte_eth_vmdq_rx_conf *def_conf =
207 &vmdq_conf_default.rx_adv_conf.vmdq_rx_conf;
210 memset(&conf, 0, sizeof(conf));
211 conf.nb_queue_pools = (enum rte_eth_nb_pools)num_devices;
212 conf.nb_pool_maps = num_devices;
213 conf.enable_loop_back = def_conf->enable_loop_back;
214 conf.rx_mode = def_conf->rx_mode;
216 for (i = 0; i < conf.nb_pool_maps; i++) {
217 conf.pool_map[i].vlan_id = vlan_tags[ i ];
218 conf.pool_map[i].pools = (1UL << i);
221 (void)(rte_memcpy(eth_conf, &vmdq_conf_default, sizeof(*eth_conf)));
222 (void)(rte_memcpy(ð_conf->rx_adv_conf.vmdq_rx_conf, &conf,
223 sizeof(eth_conf->rx_adv_conf.vmdq_rx_conf)));
228 * Initialises a given port using global settings and with the rx buffers
229 * coming from the mbuf_pool passed as parameter
232 port_init(uint16_t port)
234 struct rte_eth_dev_info dev_info;
235 struct rte_eth_conf port_conf;
236 struct rte_eth_rxconf *rxconf;
237 struct rte_eth_txconf *txconf;
238 int16_t rx_rings, tx_rings;
239 uint16_t rx_ring_size, tx_ring_size;
243 /* The max pool number from dev_info will be used to validate the pool number specified in cmd line */
244 retval = rte_eth_dev_info_get(port, &dev_info);
246 RTE_LOG(ERR, VHOST_PORT,
247 "Error during getting device (port %u) info: %s\n",
248 port, strerror(-retval));
253 rxconf = &dev_info.default_rxconf;
254 txconf = &dev_info.default_txconf;
255 rxconf->rx_drop_en = 1;
257 /*configure the number of supported virtio devices based on VMDQ limits */
258 num_devices = dev_info.max_vmdq_pools;
260 rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
261 tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
263 tx_rings = (uint16_t)rte_lcore_count();
265 /* Get port configuration. */
266 retval = get_eth_conf(&port_conf, num_devices);
269 /* NIC queues are divided into pf queues and vmdq queues. */
270 num_pf_queues = dev_info.max_rx_queues - dev_info.vmdq_queue_num;
271 queues_per_pool = dev_info.vmdq_queue_num / dev_info.max_vmdq_pools;
272 num_vmdq_queues = num_devices * queues_per_pool;
273 num_queues = num_pf_queues + num_vmdq_queues;
274 vmdq_queue_base = dev_info.vmdq_queue_base;
275 vmdq_pool_base = dev_info.vmdq_pool_base;
276 printf("pf queue num: %u, configured vmdq pool num: %u, each vmdq pool has %u queues\n",
277 num_pf_queues, num_devices, queues_per_pool);
279 if (!rte_eth_dev_is_valid_port(port))
282 rx_rings = (uint16_t)dev_info.max_rx_queues;
283 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
284 port_conf.txmode.offloads |=
285 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
286 /* Configure ethernet device. */
287 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
289 RTE_LOG(ERR, VHOST_PORT, "Failed to configure port %u: %s.\n",
290 port, strerror(-retval));
294 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rx_ring_size,
297 RTE_LOG(ERR, VHOST_PORT, "Failed to adjust number of descriptors "
298 "for port %u: %s.\n", port, strerror(-retval));
301 if (rx_ring_size > RTE_TEST_RX_DESC_DEFAULT) {
302 RTE_LOG(ERR, VHOST_PORT, "Mbuf pool has an insufficient size "
303 "for Rx queues on port %u.\n", port);
307 /* Setup the queues. */
308 rxconf->offloads = port_conf.rxmode.offloads;
309 for (q = 0; q < rx_rings; q ++) {
310 retval = rte_eth_rx_queue_setup(port, q, rx_ring_size,
311 rte_eth_dev_socket_id(port),
315 RTE_LOG(ERR, VHOST_PORT,
316 "Failed to setup rx queue %u of port %u: %s.\n",
317 q, port, strerror(-retval));
321 txconf->offloads = port_conf.txmode.offloads;
322 for (q = 0; q < tx_rings; q ++) {
323 retval = rte_eth_tx_queue_setup(port, q, tx_ring_size,
324 rte_eth_dev_socket_id(port),
327 RTE_LOG(ERR, VHOST_PORT,
328 "Failed to setup tx queue %u of port %u: %s.\n",
329 q, port, strerror(-retval));
334 /* Start the device. */
335 retval = rte_eth_dev_start(port);
337 RTE_LOG(ERR, VHOST_PORT, "Failed to start port %u: %s\n",
338 port, strerror(-retval));
343 retval = rte_eth_promiscuous_enable(port);
345 RTE_LOG(ERR, VHOST_PORT,
346 "Failed to enable promiscuous mode on port %u: %s\n",
347 port, rte_strerror(-retval));
352 retval = rte_eth_macaddr_get(port, &vmdq_ports_eth_addr[port]);
354 RTE_LOG(ERR, VHOST_PORT,
355 "Failed to get MAC address on port %u: %s\n",
356 port, rte_strerror(-retval));
360 RTE_LOG(INFO, VHOST_PORT, "Max virtio devices supported: %u\n", num_devices);
361 RTE_LOG(INFO, VHOST_PORT, "Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
362 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
364 vmdq_ports_eth_addr[port].addr_bytes[0],
365 vmdq_ports_eth_addr[port].addr_bytes[1],
366 vmdq_ports_eth_addr[port].addr_bytes[2],
367 vmdq_ports_eth_addr[port].addr_bytes[3],
368 vmdq_ports_eth_addr[port].addr_bytes[4],
369 vmdq_ports_eth_addr[port].addr_bytes[5]);
375 * Set socket file path.
378 us_vhost_parse_socket_path(const char *q_arg)
382 /* parse number string */
383 if (strnlen(q_arg, PATH_MAX) == PATH_MAX)
387 socket_files = realloc(socket_files, PATH_MAX * (nb_sockets + 1));
388 if (socket_files == NULL) {
393 strlcpy(socket_files + nb_sockets * PATH_MAX, q_arg, PATH_MAX);
400 * Parse the portmask provided at run time.
403 parse_portmask(const char *portmask)
410 /* parse hexadecimal string */
411 pm = strtoul(portmask, &end, 16);
412 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
420 * Parse num options at run time.
423 parse_num_opt(const char *q_arg, uint32_t max_valid_value)
430 /* parse unsigned int string */
431 num = strtoul(q_arg, &end, 10);
432 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
435 if (num > max_valid_value)
446 us_vhost_usage(const char *prgname)
448 RTE_LOG(INFO, VHOST_CONFIG, "%s [EAL options] -- -p PORTMASK\n"
450 " --rx_retry [0|1] --mergeable [0|1] --stats [0-N]\n"
451 " --socket-file <path>\n"
453 " -p PORTMASK: Set mask for ports to be used by application\n"
454 " --vm2vm [0|1|2]: disable/software(default)/hardware vm2vm comms\n"
455 " --rx-retry [0|1]: disable/enable(default) retries on rx. Enable retry if destintation queue is full\n"
456 " --rx-retry-delay [0-N]: timeout(in usecond) between retries on RX. This makes effect only if retries on rx enabled\n"
457 " --rx-retry-num [0-N]: the number of retries on rx. This makes effect only if retries on rx enabled\n"
458 " --mergeable [0|1]: disable(default)/enable RX mergeable buffers\n"
459 " --stats [0-N]: 0: Disable stats, N: Time in seconds to print stats\n"
460 " --socket-file: The path of the socket file.\n"
461 " --tx-csum [0|1] disable/enable TX checksum offload.\n"
462 " --tso [0|1] disable/enable TCP segment offload.\n"
463 " --client register a vhost-user socket as client mode.\n"
464 " --dma-type register dma type for your vhost async driver. For example \"ioat\" for now.\n"
465 " --dmas register dma channel for specific vhost device.\n",
470 * Parse the arguments given in the command line of the application.
473 us_vhost_parse_args(int argc, char **argv)
478 const char *prgname = argv[0];
479 static struct option long_option[] = {
480 {"vm2vm", required_argument, NULL, 0},
481 {"rx-retry", required_argument, NULL, 0},
482 {"rx-retry-delay", required_argument, NULL, 0},
483 {"rx-retry-num", required_argument, NULL, 0},
484 {"mergeable", required_argument, NULL, 0},
485 {"stats", required_argument, NULL, 0},
486 {"socket-file", required_argument, NULL, 0},
487 {"tx-csum", required_argument, NULL, 0},
488 {"tso", required_argument, NULL, 0},
489 {"client", no_argument, &client_mode, 1},
490 {"builtin-net-driver", no_argument, &builtin_net_driver, 1},
491 {"dma-type", required_argument, NULL, 0},
492 {"dmas", required_argument, NULL, 0},
496 /* Parse command line */
497 while ((opt = getopt_long(argc, argv, "p:P",
498 long_option, &option_index)) != EOF) {
502 enabled_port_mask = parse_portmask(optarg);
503 if (enabled_port_mask == 0) {
504 RTE_LOG(INFO, VHOST_CONFIG, "Invalid portmask\n");
505 us_vhost_usage(prgname);
512 vmdq_conf_default.rx_adv_conf.vmdq_rx_conf.rx_mode =
513 ETH_VMDQ_ACCEPT_BROADCAST |
514 ETH_VMDQ_ACCEPT_MULTICAST;
519 /* Enable/disable vm2vm comms. */
520 if (!strncmp(long_option[option_index].name, "vm2vm",
522 ret = parse_num_opt(optarg, (VM2VM_LAST - 1));
524 RTE_LOG(INFO, VHOST_CONFIG,
525 "Invalid argument for "
527 us_vhost_usage(prgname);
530 vm2vm_mode = (vm2vm_type)ret;
534 /* Enable/disable retries on RX. */
535 if (!strncmp(long_option[option_index].name, "rx-retry", MAX_LONG_OPT_SZ)) {
536 ret = parse_num_opt(optarg, 1);
538 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry [0|1]\n");
539 us_vhost_usage(prgname);
546 /* Enable/disable TX checksum offload. */
547 if (!strncmp(long_option[option_index].name, "tx-csum", MAX_LONG_OPT_SZ)) {
548 ret = parse_num_opt(optarg, 1);
550 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for tx-csum [0|1]\n");
551 us_vhost_usage(prgname);
554 enable_tx_csum = ret;
557 /* Enable/disable TSO offload. */
558 if (!strncmp(long_option[option_index].name, "tso", MAX_LONG_OPT_SZ)) {
559 ret = parse_num_opt(optarg, 1);
561 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for tso [0|1]\n");
562 us_vhost_usage(prgname);
568 /* Specify the retries delay time (in useconds) on RX. */
569 if (!strncmp(long_option[option_index].name, "rx-retry-delay", MAX_LONG_OPT_SZ)) {
570 ret = parse_num_opt(optarg, INT32_MAX);
572 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry-delay [0-N]\n");
573 us_vhost_usage(prgname);
576 burst_rx_delay_time = ret;
580 /* Specify the retries number on RX. */
581 if (!strncmp(long_option[option_index].name, "rx-retry-num", MAX_LONG_OPT_SZ)) {
582 ret = parse_num_opt(optarg, INT32_MAX);
584 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry-num [0-N]\n");
585 us_vhost_usage(prgname);
588 burst_rx_retry_num = ret;
592 /* Enable/disable RX mergeable buffers. */
593 if (!strncmp(long_option[option_index].name, "mergeable", MAX_LONG_OPT_SZ)) {
594 ret = parse_num_opt(optarg, 1);
596 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for mergeable [0|1]\n");
597 us_vhost_usage(prgname);
602 vmdq_conf_default.rxmode.offloads |=
603 DEV_RX_OFFLOAD_JUMBO_FRAME;
604 vmdq_conf_default.rxmode.max_rx_pkt_len
605 = JUMBO_FRAME_MAX_SIZE;
610 /* Enable/disable stats. */
611 if (!strncmp(long_option[option_index].name, "stats", MAX_LONG_OPT_SZ)) {
612 ret = parse_num_opt(optarg, INT32_MAX);
614 RTE_LOG(INFO, VHOST_CONFIG,
615 "Invalid argument for stats [0..N]\n");
616 us_vhost_usage(prgname);
623 /* Set socket file path. */
624 if (!strncmp(long_option[option_index].name,
625 "socket-file", MAX_LONG_OPT_SZ)) {
626 if (us_vhost_parse_socket_path(optarg) == -1) {
627 RTE_LOG(INFO, VHOST_CONFIG,
628 "Invalid argument for socket name (Max %d characters)\n",
630 us_vhost_usage(prgname);
635 if (!strncmp(long_option[option_index].name,
636 "dma-type", MAX_LONG_OPT_SZ)) {
637 if (strlen(optarg) >= MAX_LONG_OPT_SZ) {
638 RTE_LOG(INFO, VHOST_CONFIG,
640 us_vhost_usage(prgname);
643 strcpy(dma_type, optarg);
646 if (!strncmp(long_option[option_index].name,
647 "dmas", MAX_LONG_OPT_SZ)) {
648 if (open_dma(optarg) == -1) {
649 RTE_LOG(INFO, VHOST_CONFIG,
651 us_vhost_usage(prgname);
654 async_vhost_driver = 1;
659 /* Invalid option - print options. */
661 us_vhost_usage(prgname);
666 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
667 if (enabled_port_mask & (1 << i))
668 ports[num_ports++] = i;
671 if ((num_ports == 0) || (num_ports > MAX_SUP_PORTS)) {
672 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
673 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
681 * Update the global var NUM_PORTS and array PORTS according to system ports number
682 * and return valid ports number
684 static unsigned check_ports_num(unsigned nb_ports)
686 unsigned valid_num_ports = num_ports;
689 if (num_ports > nb_ports) {
690 RTE_LOG(INFO, VHOST_PORT, "\nSpecified port number(%u) exceeds total system port number(%u)\n",
691 num_ports, nb_ports);
692 num_ports = nb_ports;
695 for (portid = 0; portid < num_ports; portid ++) {
696 if (!rte_eth_dev_is_valid_port(ports[portid])) {
697 RTE_LOG(INFO, VHOST_PORT,
698 "\nSpecified port ID(%u) is not valid\n",
700 ports[portid] = INVALID_PORT_ID;
704 return valid_num_ports;
707 static __rte_always_inline struct vhost_dev *
708 find_vhost_dev(struct rte_ether_addr *mac)
710 struct vhost_dev *vdev;
712 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
713 if (vdev->ready == DEVICE_RX &&
714 rte_is_same_ether_addr(mac, &vdev->mac_address))
722 * This function learns the MAC address of the device and registers this along with a
723 * vlan tag to a VMDQ.
726 link_vmdq(struct vhost_dev *vdev, struct rte_mbuf *m)
728 struct rte_ether_hdr *pkt_hdr;
731 /* Learn MAC address of guest device from packet */
732 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
734 if (find_vhost_dev(&pkt_hdr->s_addr)) {
735 RTE_LOG(ERR, VHOST_DATA,
736 "(%d) device is using a registered MAC!\n",
741 for (i = 0; i < RTE_ETHER_ADDR_LEN; i++)
742 vdev->mac_address.addr_bytes[i] = pkt_hdr->s_addr.addr_bytes[i];
744 /* vlan_tag currently uses the device_id. */
745 vdev->vlan_tag = vlan_tags[vdev->vid];
747 /* Print out VMDQ registration info. */
748 RTE_LOG(INFO, VHOST_DATA,
749 "(%d) mac %02x:%02x:%02x:%02x:%02x:%02x and vlan %d registered\n",
751 vdev->mac_address.addr_bytes[0], vdev->mac_address.addr_bytes[1],
752 vdev->mac_address.addr_bytes[2], vdev->mac_address.addr_bytes[3],
753 vdev->mac_address.addr_bytes[4], vdev->mac_address.addr_bytes[5],
756 /* Register the MAC address. */
757 ret = rte_eth_dev_mac_addr_add(ports[0], &vdev->mac_address,
758 (uint32_t)vdev->vid + vmdq_pool_base);
760 RTE_LOG(ERR, VHOST_DATA,
761 "(%d) failed to add device MAC address to VMDQ\n",
764 rte_eth_dev_set_vlan_strip_on_queue(ports[0], vdev->vmdq_rx_q, 1);
766 /* Set device as ready for RX. */
767 vdev->ready = DEVICE_RX;
773 * Removes MAC address and vlan tag from VMDQ. Ensures that nothing is adding buffers to the RX
774 * queue before disabling RX on the device.
777 unlink_vmdq(struct vhost_dev *vdev)
781 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
783 if (vdev->ready == DEVICE_RX) {
784 /*clear MAC and VLAN settings*/
785 rte_eth_dev_mac_addr_remove(ports[0], &vdev->mac_address);
786 for (i = 0; i < 6; i++)
787 vdev->mac_address.addr_bytes[i] = 0;
791 /*Clear out the receive buffers*/
792 rx_count = rte_eth_rx_burst(ports[0],
793 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
796 for (i = 0; i < rx_count; i++)
797 rte_pktmbuf_free(pkts_burst[i]);
799 rx_count = rte_eth_rx_burst(ports[0],
800 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
803 vdev->ready = DEVICE_MAC_LEARNING;
807 static __rte_always_inline void
808 virtio_xmit(struct vhost_dev *dst_vdev, struct vhost_dev *src_vdev,
812 struct rte_mbuf *m_cpl[1];
814 if (builtin_net_driver) {
815 ret = vs_enqueue_pkts(dst_vdev, VIRTIO_RXQ, &m, 1);
816 } else if (async_vhost_driver) {
817 ret = rte_vhost_submit_enqueue_burst(dst_vdev->vid, VIRTIO_RXQ,
821 dst_vdev->nr_async_pkts++;
823 while (likely(dst_vdev->nr_async_pkts)) {
824 if (rte_vhost_poll_enqueue_completed(dst_vdev->vid,
825 VIRTIO_RXQ, m_cpl, 1))
826 dst_vdev->nr_async_pkts--;
829 ret = rte_vhost_enqueue_burst(dst_vdev->vid, VIRTIO_RXQ, &m, 1);
833 rte_atomic64_inc(&dst_vdev->stats.rx_total_atomic);
834 rte_atomic64_add(&dst_vdev->stats.rx_atomic, ret);
835 src_vdev->stats.tx_total++;
836 src_vdev->stats.tx += ret;
841 * Check if the packet destination MAC address is for a local device. If so then put
842 * the packet on that devices RX queue. If not then return.
844 static __rte_always_inline int
845 virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
847 struct rte_ether_hdr *pkt_hdr;
848 struct vhost_dev *dst_vdev;
850 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
852 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
856 if (vdev->vid == dst_vdev->vid) {
857 RTE_LOG_DP(DEBUG, VHOST_DATA,
858 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
863 RTE_LOG_DP(DEBUG, VHOST_DATA,
864 "(%d) TX: MAC address is local\n", dst_vdev->vid);
866 if (unlikely(dst_vdev->remove)) {
867 RTE_LOG_DP(DEBUG, VHOST_DATA,
868 "(%d) device is marked for removal\n", dst_vdev->vid);
872 virtio_xmit(dst_vdev, vdev, m);
877 * Check if the destination MAC of a packet is one local VM,
878 * and get its vlan tag, and offset if it is.
880 static __rte_always_inline int
881 find_local_dest(struct vhost_dev *vdev, struct rte_mbuf *m,
882 uint32_t *offset, uint16_t *vlan_tag)
884 struct vhost_dev *dst_vdev;
885 struct rte_ether_hdr *pkt_hdr =
886 rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
888 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
892 if (vdev->vid == dst_vdev->vid) {
893 RTE_LOG_DP(DEBUG, VHOST_DATA,
894 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
900 * HW vlan strip will reduce the packet length
901 * by minus length of vlan tag, so need restore
902 * the packet length by plus it.
905 *vlan_tag = vlan_tags[vdev->vid];
907 RTE_LOG_DP(DEBUG, VHOST_DATA,
908 "(%d) TX: pkt to local VM device id: (%d), vlan tag: %u.\n",
909 vdev->vid, dst_vdev->vid, *vlan_tag);
915 get_psd_sum(void *l3_hdr, uint64_t ol_flags)
917 if (ol_flags & PKT_TX_IPV4)
918 return rte_ipv4_phdr_cksum(l3_hdr, ol_flags);
919 else /* assume ethertype == RTE_ETHER_TYPE_IPV6 */
920 return rte_ipv6_phdr_cksum(l3_hdr, ol_flags);
923 static void virtio_tx_offload(struct rte_mbuf *m)
926 struct rte_ipv4_hdr *ipv4_hdr = NULL;
927 struct rte_tcp_hdr *tcp_hdr = NULL;
928 struct rte_ether_hdr *eth_hdr =
929 rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
931 l3_hdr = (char *)eth_hdr + m->l2_len;
933 if (m->ol_flags & PKT_TX_IPV4) {
935 ipv4_hdr->hdr_checksum = 0;
936 m->ol_flags |= PKT_TX_IP_CKSUM;
939 tcp_hdr = (struct rte_tcp_hdr *)((char *)l3_hdr + m->l3_len);
940 tcp_hdr->cksum = get_psd_sum(l3_hdr, m->ol_flags);
944 free_pkts(struct rte_mbuf **pkts, uint16_t n)
947 rte_pktmbuf_free(pkts[n]);
950 static __rte_always_inline void
951 do_drain_mbuf_table(struct mbuf_table *tx_q)
955 count = rte_eth_tx_burst(ports[0], tx_q->txq_id,
956 tx_q->m_table, tx_q->len);
957 if (unlikely(count < tx_q->len))
958 free_pkts(&tx_q->m_table[count], tx_q->len - count);
964 * This function routes the TX packet to the correct interface. This
965 * may be a local device or the physical port.
967 static __rte_always_inline void
968 virtio_tx_route(struct vhost_dev *vdev, struct rte_mbuf *m, uint16_t vlan_tag)
970 struct mbuf_table *tx_q;
972 const uint16_t lcore_id = rte_lcore_id();
973 struct rte_ether_hdr *nh;
976 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
977 if (unlikely(rte_is_broadcast_ether_addr(&nh->d_addr))) {
978 struct vhost_dev *vdev2;
980 TAILQ_FOREACH(vdev2, &vhost_dev_list, global_vdev_entry) {
982 virtio_xmit(vdev2, vdev, m);
987 /*check if destination is local VM*/
988 if ((vm2vm_mode == VM2VM_SOFTWARE) && (virtio_tx_local(vdev, m) == 0)) {
993 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
994 if (unlikely(find_local_dest(vdev, m, &offset,
1001 RTE_LOG_DP(DEBUG, VHOST_DATA,
1002 "(%d) TX: MAC address is external\n", vdev->vid);
1006 /*Add packet to the port tx queue*/
1007 tx_q = &lcore_tx_queue[lcore_id];
1009 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
1010 if (unlikely(nh->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN))) {
1011 /* Guest has inserted the vlan tag. */
1012 struct rte_vlan_hdr *vh = (struct rte_vlan_hdr *) (nh + 1);
1013 uint16_t vlan_tag_be = rte_cpu_to_be_16(vlan_tag);
1014 if ((vm2vm_mode == VM2VM_HARDWARE) &&
1015 (vh->vlan_tci != vlan_tag_be))
1016 vh->vlan_tci = vlan_tag_be;
1018 m->ol_flags |= PKT_TX_VLAN_PKT;
1021 * Find the right seg to adjust the data len when offset is
1022 * bigger than tail room size.
1024 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
1025 if (likely(offset <= rte_pktmbuf_tailroom(m)))
1026 m->data_len += offset;
1028 struct rte_mbuf *seg = m;
1030 while ((seg->next != NULL) &&
1031 (offset > rte_pktmbuf_tailroom(seg)))
1034 seg->data_len += offset;
1036 m->pkt_len += offset;
1039 m->vlan_tci = vlan_tag;
1042 if (m->ol_flags & PKT_TX_TCP_SEG)
1043 virtio_tx_offload(m);
1045 tx_q->m_table[tx_q->len++] = m;
1047 vdev->stats.tx_total++;
1051 if (unlikely(tx_q->len == MAX_PKT_BURST))
1052 do_drain_mbuf_table(tx_q);
1056 static __rte_always_inline void
1057 drain_mbuf_table(struct mbuf_table *tx_q)
1059 static uint64_t prev_tsc;
1065 cur_tsc = rte_rdtsc();
1066 if (unlikely(cur_tsc - prev_tsc > MBUF_TABLE_DRAIN_TSC)) {
1069 RTE_LOG_DP(DEBUG, VHOST_DATA,
1070 "TX queue drained after timeout with burst size %u\n",
1072 do_drain_mbuf_table(tx_q);
1076 static __rte_always_inline void
1077 complete_async_pkts(struct vhost_dev *vdev, uint16_t qid)
1079 struct rte_mbuf *p_cpl[MAX_PKT_BURST];
1080 uint16_t complete_count;
1082 complete_count = rte_vhost_poll_enqueue_completed(vdev->vid,
1083 qid, p_cpl, MAX_PKT_BURST);
1084 vdev->nr_async_pkts -= complete_count;
1086 free_pkts(p_cpl, complete_count);
1089 static __rte_always_inline void
1090 drain_eth_rx(struct vhost_dev *vdev)
1092 uint16_t rx_count, enqueue_count;
1093 struct rte_mbuf *pkts[MAX_PKT_BURST];
1095 rx_count = rte_eth_rx_burst(ports[0], vdev->vmdq_rx_q,
1096 pkts, MAX_PKT_BURST);
1098 while (likely(vdev->nr_async_pkts))
1099 complete_async_pkts(vdev, VIRTIO_RXQ);
1105 * When "enable_retry" is set, here we wait and retry when there
1106 * is no enough free slots in the queue to hold @rx_count packets,
1107 * to diminish packet loss.
1110 unlikely(rx_count > rte_vhost_avail_entries(vdev->vid,
1114 for (retry = 0; retry < burst_rx_retry_num; retry++) {
1115 rte_delay_us(burst_rx_delay_time);
1116 if (rx_count <= rte_vhost_avail_entries(vdev->vid,
1122 if (builtin_net_driver) {
1123 enqueue_count = vs_enqueue_pkts(vdev, VIRTIO_RXQ,
1125 } else if (async_vhost_driver) {
1126 enqueue_count = rte_vhost_submit_enqueue_burst(vdev->vid,
1127 VIRTIO_RXQ, pkts, rx_count);
1128 vdev->nr_async_pkts += enqueue_count;
1130 enqueue_count = rte_vhost_enqueue_burst(vdev->vid, VIRTIO_RXQ,
1135 rte_atomic64_add(&vdev->stats.rx_total_atomic, rx_count);
1136 rte_atomic64_add(&vdev->stats.rx_atomic, enqueue_count);
1139 if (!async_vhost_driver)
1140 free_pkts(pkts, rx_count);
1143 static __rte_always_inline void
1144 drain_virtio_tx(struct vhost_dev *vdev)
1146 struct rte_mbuf *pkts[MAX_PKT_BURST];
1150 if (builtin_net_driver) {
1151 count = vs_dequeue_pkts(vdev, VIRTIO_TXQ, mbuf_pool,
1152 pkts, MAX_PKT_BURST);
1154 count = rte_vhost_dequeue_burst(vdev->vid, VIRTIO_TXQ,
1155 mbuf_pool, pkts, MAX_PKT_BURST);
1158 /* setup VMDq for the first packet */
1159 if (unlikely(vdev->ready == DEVICE_MAC_LEARNING) && count) {
1160 if (vdev->remove || link_vmdq(vdev, pkts[0]) == -1)
1161 free_pkts(pkts, count);
1164 for (i = 0; i < count; ++i)
1165 virtio_tx_route(vdev, pkts[i], vlan_tags[vdev->vid]);
1169 * Main function of vhost-switch. It basically does:
1171 * for each vhost device {
1174 * Which drains the host eth Rx queue linked to the vhost device,
1175 * and deliver all of them to guest virito Rx ring associated with
1176 * this vhost device.
1178 * - drain_virtio_tx()
1180 * Which drains the guest virtio Tx queue and deliver all of them
1181 * to the target, which could be another vhost device, or the
1182 * physical eth dev. The route is done in function "virtio_tx_route".
1186 switch_worker(void *arg __rte_unused)
1189 unsigned lcore_id = rte_lcore_id();
1190 struct vhost_dev *vdev;
1191 struct mbuf_table *tx_q;
1193 RTE_LOG(INFO, VHOST_DATA, "Procesing on Core %u started\n", lcore_id);
1195 tx_q = &lcore_tx_queue[lcore_id];
1196 for (i = 0; i < rte_lcore_count(); i++) {
1197 if (lcore_ids[i] == lcore_id) {
1204 drain_mbuf_table(tx_q);
1207 * Inform the configuration core that we have exited the
1208 * linked list and that no devices are in use if requested.
1210 if (lcore_info[lcore_id].dev_removal_flag == REQUEST_DEV_REMOVAL)
1211 lcore_info[lcore_id].dev_removal_flag = ACK_DEV_REMOVAL;
1214 * Process vhost devices
1216 TAILQ_FOREACH(vdev, &lcore_info[lcore_id].vdev_list,
1218 if (unlikely(vdev->remove)) {
1220 vdev->ready = DEVICE_SAFE_REMOVE;
1224 if (likely(vdev->ready == DEVICE_RX))
1227 if (likely(!vdev->remove))
1228 drain_virtio_tx(vdev);
1236 * Remove a device from the specific data core linked list and from the
1237 * main linked list. Synchonization occurs through the use of the
1238 * lcore dev_removal_flag. Device is made volatile here to avoid re-ordering
1239 * of dev->remove=1 which can cause an infinite loop in the rte_pause loop.
1242 destroy_device(int vid)
1244 struct vhost_dev *vdev = NULL;
1247 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1248 if (vdev->vid == vid)
1253 /*set the remove flag. */
1255 while(vdev->ready != DEVICE_SAFE_REMOVE) {
1259 if (builtin_net_driver)
1260 vs_vhost_net_remove(vdev);
1262 TAILQ_REMOVE(&lcore_info[vdev->coreid].vdev_list, vdev,
1264 TAILQ_REMOVE(&vhost_dev_list, vdev, global_vdev_entry);
1267 /* Set the dev_removal_flag on each lcore. */
1268 RTE_LCORE_FOREACH_WORKER(lcore)
1269 lcore_info[lcore].dev_removal_flag = REQUEST_DEV_REMOVAL;
1272 * Once each core has set the dev_removal_flag to ACK_DEV_REMOVAL
1273 * we can be sure that they can no longer access the device removed
1274 * from the linked lists and that the devices are no longer in use.
1276 RTE_LCORE_FOREACH_WORKER(lcore) {
1277 while (lcore_info[lcore].dev_removal_flag != ACK_DEV_REMOVAL)
1281 lcore_info[vdev->coreid].device_num--;
1283 RTE_LOG(INFO, VHOST_DATA,
1284 "(%d) device has been removed from data core\n",
1287 if (async_vhost_driver)
1288 rte_vhost_async_channel_unregister(vid, VIRTIO_RXQ);
1294 * A new device is added to a data core. First the device is added to the main linked list
1295 * and then allocated to a specific data core.
1300 int lcore, core_add = 0;
1301 uint32_t device_num_min = num_devices;
1302 struct vhost_dev *vdev;
1303 vdev = rte_zmalloc("vhost device", sizeof(*vdev), RTE_CACHE_LINE_SIZE);
1305 RTE_LOG(INFO, VHOST_DATA,
1306 "(%d) couldn't allocate memory for vhost dev\n",
1312 if (builtin_net_driver)
1313 vs_vhost_net_setup(vdev);
1315 TAILQ_INSERT_TAIL(&vhost_dev_list, vdev, global_vdev_entry);
1316 vdev->vmdq_rx_q = vid * queues_per_pool + vmdq_queue_base;
1318 /*reset ready flag*/
1319 vdev->ready = DEVICE_MAC_LEARNING;
1322 /* Find a suitable lcore to add the device. */
1323 RTE_LCORE_FOREACH_WORKER(lcore) {
1324 if (lcore_info[lcore].device_num < device_num_min) {
1325 device_num_min = lcore_info[lcore].device_num;
1329 vdev->coreid = core_add;
1331 TAILQ_INSERT_TAIL(&lcore_info[vdev->coreid].vdev_list, vdev,
1333 lcore_info[vdev->coreid].device_num++;
1335 /* Disable notifications. */
1336 rte_vhost_enable_guest_notification(vid, VIRTIO_RXQ, 0);
1337 rte_vhost_enable_guest_notification(vid, VIRTIO_TXQ, 0);
1339 RTE_LOG(INFO, VHOST_DATA,
1340 "(%d) device has been added to data core %d\n",
1343 if (async_vhost_driver) {
1344 struct rte_vhost_async_features f;
1345 struct rte_vhost_async_channel_ops channel_ops;
1346 if (strncmp(dma_type, "ioat", 4) == 0) {
1347 channel_ops.transfer_data = ioat_transfer_data_cb;
1348 channel_ops.check_completed_copies =
1349 ioat_check_completed_copies_cb;
1350 f.async_inorder = 1;
1351 f.async_threshold = 256;
1352 return rte_vhost_async_channel_register(vid, VIRTIO_RXQ,
1353 f.intval, &channel_ops);
1361 * These callback allow devices to be added to the data core when configuration
1362 * has been fully complete.
1364 static const struct vhost_device_ops virtio_net_device_ops =
1366 .new_device = new_device,
1367 .destroy_device = destroy_device,
1371 * This is a thread will wake up after a period to print stats if the user has
1375 print_stats(__rte_unused void *arg)
1377 struct vhost_dev *vdev;
1378 uint64_t tx_dropped, rx_dropped;
1379 uint64_t tx, tx_total, rx, rx_total;
1380 const char clr[] = { 27, '[', '2', 'J', '\0' };
1381 const char top_left[] = { 27, '[', '1', ';', '1', 'H','\0' };
1384 sleep(enable_stats);
1386 /* Clear screen and move to top left */
1387 printf("%s%s\n", clr, top_left);
1388 printf("Device statistics =================================\n");
1390 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1391 tx_total = vdev->stats.tx_total;
1392 tx = vdev->stats.tx;
1393 tx_dropped = tx_total - tx;
1395 rx_total = rte_atomic64_read(&vdev->stats.rx_total_atomic);
1396 rx = rte_atomic64_read(&vdev->stats.rx_atomic);
1397 rx_dropped = rx_total - rx;
1399 printf("Statistics for device %d\n"
1400 "-----------------------\n"
1401 "TX total: %" PRIu64 "\n"
1402 "TX dropped: %" PRIu64 "\n"
1403 "TX successful: %" PRIu64 "\n"
1404 "RX total: %" PRIu64 "\n"
1405 "RX dropped: %" PRIu64 "\n"
1406 "RX successful: %" PRIu64 "\n",
1408 tx_total, tx_dropped, tx,
1409 rx_total, rx_dropped, rx);
1412 printf("===================================================\n");
1421 unregister_drivers(int socket_num)
1425 for (i = 0; i < socket_num; i++) {
1426 ret = rte_vhost_driver_unregister(socket_files + i * PATH_MAX);
1428 RTE_LOG(ERR, VHOST_CONFIG,
1429 "Fail to unregister vhost driver for %s.\n",
1430 socket_files + i * PATH_MAX);
1434 /* When we receive a INT signal, unregister vhost driver */
1436 sigint_handler(__rte_unused int signum)
1438 /* Unregister vhost driver. */
1439 unregister_drivers(nb_sockets);
1445 * While creating an mbuf pool, one key thing is to figure out how
1446 * many mbuf entries is enough for our use. FYI, here are some
1449 * - Each rx queue would reserve @nr_rx_desc mbufs at queue setup stage
1451 * - For each switch core (A CPU core does the packet switch), we need
1452 * also make some reservation for receiving the packets from virtio
1453 * Tx queue. How many is enough depends on the usage. It's normally
1454 * a simple calculation like following:
1456 * MAX_PKT_BURST * max packet size / mbuf size
1458 * So, we definitely need allocate more mbufs when TSO is enabled.
1460 * - Similarly, for each switching core, we should serve @nr_rx_desc
1461 * mbufs for receiving the packets from physical NIC device.
1463 * - We also need make sure, for each switch core, we have allocated
1464 * enough mbufs to fill up the mbuf cache.
1467 create_mbuf_pool(uint16_t nr_port, uint32_t nr_switch_core, uint32_t mbuf_size,
1468 uint32_t nr_queues, uint32_t nr_rx_desc, uint32_t nr_mbuf_cache)
1471 uint32_t nr_mbufs_per_core;
1472 uint32_t mtu = 1500;
1479 nr_mbufs_per_core = (mtu + mbuf_size) * MAX_PKT_BURST /
1480 (mbuf_size - RTE_PKTMBUF_HEADROOM);
1481 nr_mbufs_per_core += nr_rx_desc;
1482 nr_mbufs_per_core = RTE_MAX(nr_mbufs_per_core, nr_mbuf_cache);
1484 nr_mbufs = nr_queues * nr_rx_desc;
1485 nr_mbufs += nr_mbufs_per_core * nr_switch_core;
1486 nr_mbufs *= nr_port;
1488 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", nr_mbufs,
1489 nr_mbuf_cache, 0, mbuf_size,
1491 if (mbuf_pool == NULL)
1492 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
1496 * Main function, does initialisation and calls the per-lcore functions.
1499 main(int argc, char *argv[])
1501 unsigned lcore_id, core_id = 0;
1502 unsigned nb_ports, valid_num_ports;
1505 static pthread_t tid;
1508 signal(SIGINT, sigint_handler);
1511 ret = rte_eal_init(argc, argv);
1513 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
1517 /* parse app arguments */
1518 ret = us_vhost_parse_args(argc, argv);
1520 rte_exit(EXIT_FAILURE, "Invalid argument\n");
1522 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1523 TAILQ_INIT(&lcore_info[lcore_id].vdev_list);
1525 if (rte_lcore_is_enabled(lcore_id))
1526 lcore_ids[core_id++] = lcore_id;
1529 if (rte_lcore_count() > RTE_MAX_LCORE)
1530 rte_exit(EXIT_FAILURE,"Not enough cores\n");
1532 /* Get the number of physical ports. */
1533 nb_ports = rte_eth_dev_count_avail();
1536 * Update the global var NUM_PORTS and global array PORTS
1537 * and get value of var VALID_NUM_PORTS according to system ports number
1539 valid_num_ports = check_ports_num(nb_ports);
1541 if ((valid_num_ports == 0) || (valid_num_ports > MAX_SUP_PORTS)) {
1542 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
1543 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
1548 * FIXME: here we are trying to allocate mbufs big enough for
1549 * @MAX_QUEUES, but the truth is we're never going to use that
1550 * many queues here. We probably should only do allocation for
1551 * those queues we are going to use.
1553 create_mbuf_pool(valid_num_ports, rte_lcore_count() - 1, MBUF_DATA_SIZE,
1554 MAX_QUEUES, RTE_TEST_RX_DESC_DEFAULT, MBUF_CACHE_SIZE);
1556 if (vm2vm_mode == VM2VM_HARDWARE) {
1557 /* Enable VT loop back to let L2 switch to do it. */
1558 vmdq_conf_default.rx_adv_conf.vmdq_rx_conf.enable_loop_back = 1;
1559 RTE_LOG(DEBUG, VHOST_CONFIG,
1560 "Enable loop back for L2 switch in vmdq.\n");
1563 /* initialize all ports */
1564 RTE_ETH_FOREACH_DEV(portid) {
1565 /* skip ports that are not enabled */
1566 if ((enabled_port_mask & (1 << portid)) == 0) {
1567 RTE_LOG(INFO, VHOST_PORT,
1568 "Skipping disabled port %d\n", portid);
1571 if (port_init(portid) != 0)
1572 rte_exit(EXIT_FAILURE,
1573 "Cannot initialize network ports\n");
1576 /* Enable stats if the user option is set. */
1578 ret = rte_ctrl_thread_create(&tid, "print-stats", NULL,
1581 rte_exit(EXIT_FAILURE,
1582 "Cannot create print-stats thread\n");
1585 /* Launch all data cores. */
1586 RTE_LCORE_FOREACH_WORKER(lcore_id)
1587 rte_eal_remote_launch(switch_worker, NULL, lcore_id);
1590 flags |= RTE_VHOST_USER_CLIENT;
1592 /* Register vhost user driver to handle vhost messages. */
1593 for (i = 0; i < nb_sockets; i++) {
1594 char *file = socket_files + i * PATH_MAX;
1595 if (async_vhost_driver)
1596 flags = flags | RTE_VHOST_USER_ASYNC_COPY;
1598 ret = rte_vhost_driver_register(file, flags);
1600 unregister_drivers(i);
1601 rte_exit(EXIT_FAILURE,
1602 "vhost driver register failure.\n");
1605 if (builtin_net_driver)
1606 rte_vhost_driver_set_features(file, VIRTIO_NET_FEATURES);
1608 if (mergeable == 0) {
1609 rte_vhost_driver_disable_features(file,
1610 1ULL << VIRTIO_NET_F_MRG_RXBUF);
1613 if (enable_tx_csum == 0) {
1614 rte_vhost_driver_disable_features(file,
1615 1ULL << VIRTIO_NET_F_CSUM);
1618 if (enable_tso == 0) {
1619 rte_vhost_driver_disable_features(file,
1620 1ULL << VIRTIO_NET_F_HOST_TSO4);
1621 rte_vhost_driver_disable_features(file,
1622 1ULL << VIRTIO_NET_F_HOST_TSO6);
1623 rte_vhost_driver_disable_features(file,
1624 1ULL << VIRTIO_NET_F_GUEST_TSO4);
1625 rte_vhost_driver_disable_features(file,
1626 1ULL << VIRTIO_NET_F_GUEST_TSO6);
1630 rte_vhost_driver_enable_features(file,
1631 1ULL << VIRTIO_NET_F_CTRL_RX);
1634 ret = rte_vhost_driver_callback_register(file,
1635 &virtio_net_device_ops);
1637 rte_exit(EXIT_FAILURE,
1638 "failed to register vhost driver callbacks.\n");
1641 if (rte_vhost_driver_start(file) < 0) {
1642 rte_exit(EXIT_FAILURE,
1643 "failed to start vhost driver.\n");
1647 RTE_LCORE_FOREACH_WORKER(lcore_id)
1648 rte_eal_wait_lcore(lcore_id);