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 strcpy(dma_type, optarg);
640 if (!strncmp(long_option[option_index].name,
641 "dmas", MAX_LONG_OPT_SZ)) {
642 if (open_dma(optarg) == -1) {
643 RTE_LOG(INFO, VHOST_CONFIG,
645 us_vhost_usage(prgname);
648 async_vhost_driver = 1;
653 /* Invalid option - print options. */
655 us_vhost_usage(prgname);
660 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
661 if (enabled_port_mask & (1 << i))
662 ports[num_ports++] = i;
665 if ((num_ports == 0) || (num_ports > MAX_SUP_PORTS)) {
666 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
667 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
675 * Update the global var NUM_PORTS and array PORTS according to system ports number
676 * and return valid ports number
678 static unsigned check_ports_num(unsigned nb_ports)
680 unsigned valid_num_ports = num_ports;
683 if (num_ports > nb_ports) {
684 RTE_LOG(INFO, VHOST_PORT, "\nSpecified port number(%u) exceeds total system port number(%u)\n",
685 num_ports, nb_ports);
686 num_ports = nb_ports;
689 for (portid = 0; portid < num_ports; portid ++) {
690 if (!rte_eth_dev_is_valid_port(ports[portid])) {
691 RTE_LOG(INFO, VHOST_PORT,
692 "\nSpecified port ID(%u) is not valid\n",
694 ports[portid] = INVALID_PORT_ID;
698 return valid_num_ports;
701 static __rte_always_inline struct vhost_dev *
702 find_vhost_dev(struct rte_ether_addr *mac)
704 struct vhost_dev *vdev;
706 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
707 if (vdev->ready == DEVICE_RX &&
708 rte_is_same_ether_addr(mac, &vdev->mac_address))
716 * This function learns the MAC address of the device and registers this along with a
717 * vlan tag to a VMDQ.
720 link_vmdq(struct vhost_dev *vdev, struct rte_mbuf *m)
722 struct rte_ether_hdr *pkt_hdr;
725 /* Learn MAC address of guest device from packet */
726 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
728 if (find_vhost_dev(&pkt_hdr->s_addr)) {
729 RTE_LOG(ERR, VHOST_DATA,
730 "(%d) device is using a registered MAC!\n",
735 for (i = 0; i < RTE_ETHER_ADDR_LEN; i++)
736 vdev->mac_address.addr_bytes[i] = pkt_hdr->s_addr.addr_bytes[i];
738 /* vlan_tag currently uses the device_id. */
739 vdev->vlan_tag = vlan_tags[vdev->vid];
741 /* Print out VMDQ registration info. */
742 RTE_LOG(INFO, VHOST_DATA,
743 "(%d) mac %02x:%02x:%02x:%02x:%02x:%02x and vlan %d registered\n",
745 vdev->mac_address.addr_bytes[0], vdev->mac_address.addr_bytes[1],
746 vdev->mac_address.addr_bytes[2], vdev->mac_address.addr_bytes[3],
747 vdev->mac_address.addr_bytes[4], vdev->mac_address.addr_bytes[5],
750 /* Register the MAC address. */
751 ret = rte_eth_dev_mac_addr_add(ports[0], &vdev->mac_address,
752 (uint32_t)vdev->vid + vmdq_pool_base);
754 RTE_LOG(ERR, VHOST_DATA,
755 "(%d) failed to add device MAC address to VMDQ\n",
758 rte_eth_dev_set_vlan_strip_on_queue(ports[0], vdev->vmdq_rx_q, 1);
760 /* Set device as ready for RX. */
761 vdev->ready = DEVICE_RX;
767 * Removes MAC address and vlan tag from VMDQ. Ensures that nothing is adding buffers to the RX
768 * queue before disabling RX on the device.
771 unlink_vmdq(struct vhost_dev *vdev)
775 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
777 if (vdev->ready == DEVICE_RX) {
778 /*clear MAC and VLAN settings*/
779 rte_eth_dev_mac_addr_remove(ports[0], &vdev->mac_address);
780 for (i = 0; i < 6; i++)
781 vdev->mac_address.addr_bytes[i] = 0;
785 /*Clear out the receive buffers*/
786 rx_count = rte_eth_rx_burst(ports[0],
787 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
790 for (i = 0; i < rx_count; i++)
791 rte_pktmbuf_free(pkts_burst[i]);
793 rx_count = rte_eth_rx_burst(ports[0],
794 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
797 vdev->ready = DEVICE_MAC_LEARNING;
801 static __rte_always_inline void
802 virtio_xmit(struct vhost_dev *dst_vdev, struct vhost_dev *src_vdev,
806 struct rte_mbuf *m_cpl[1];
808 if (builtin_net_driver) {
809 ret = vs_enqueue_pkts(dst_vdev, VIRTIO_RXQ, &m, 1);
810 } else if (async_vhost_driver) {
811 ret = rte_vhost_submit_enqueue_burst(dst_vdev->vid, VIRTIO_RXQ,
815 dst_vdev->nr_async_pkts++;
817 while (likely(dst_vdev->nr_async_pkts)) {
818 if (rte_vhost_poll_enqueue_completed(dst_vdev->vid,
819 VIRTIO_RXQ, m_cpl, 1))
820 dst_vdev->nr_async_pkts--;
823 ret = rte_vhost_enqueue_burst(dst_vdev->vid, VIRTIO_RXQ, &m, 1);
827 rte_atomic64_inc(&dst_vdev->stats.rx_total_atomic);
828 rte_atomic64_add(&dst_vdev->stats.rx_atomic, ret);
829 src_vdev->stats.tx_total++;
830 src_vdev->stats.tx += ret;
835 * Check if the packet destination MAC address is for a local device. If so then put
836 * the packet on that devices RX queue. If not then return.
838 static __rte_always_inline int
839 virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
841 struct rte_ether_hdr *pkt_hdr;
842 struct vhost_dev *dst_vdev;
844 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
846 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
850 if (vdev->vid == dst_vdev->vid) {
851 RTE_LOG_DP(DEBUG, VHOST_DATA,
852 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
857 RTE_LOG_DP(DEBUG, VHOST_DATA,
858 "(%d) TX: MAC address is local\n", dst_vdev->vid);
860 if (unlikely(dst_vdev->remove)) {
861 RTE_LOG_DP(DEBUG, VHOST_DATA,
862 "(%d) device is marked for removal\n", dst_vdev->vid);
866 virtio_xmit(dst_vdev, vdev, m);
871 * Check if the destination MAC of a packet is one local VM,
872 * and get its vlan tag, and offset if it is.
874 static __rte_always_inline int
875 find_local_dest(struct vhost_dev *vdev, struct rte_mbuf *m,
876 uint32_t *offset, uint16_t *vlan_tag)
878 struct vhost_dev *dst_vdev;
879 struct rte_ether_hdr *pkt_hdr =
880 rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
882 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
886 if (vdev->vid == dst_vdev->vid) {
887 RTE_LOG_DP(DEBUG, VHOST_DATA,
888 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
894 * HW vlan strip will reduce the packet length
895 * by minus length of vlan tag, so need restore
896 * the packet length by plus it.
899 *vlan_tag = vlan_tags[vdev->vid];
901 RTE_LOG_DP(DEBUG, VHOST_DATA,
902 "(%d) TX: pkt to local VM device id: (%d), vlan tag: %u.\n",
903 vdev->vid, dst_vdev->vid, *vlan_tag);
909 get_psd_sum(void *l3_hdr, uint64_t ol_flags)
911 if (ol_flags & PKT_TX_IPV4)
912 return rte_ipv4_phdr_cksum(l3_hdr, ol_flags);
913 else /* assume ethertype == RTE_ETHER_TYPE_IPV6 */
914 return rte_ipv6_phdr_cksum(l3_hdr, ol_flags);
917 static void virtio_tx_offload(struct rte_mbuf *m)
920 struct rte_ipv4_hdr *ipv4_hdr = NULL;
921 struct rte_tcp_hdr *tcp_hdr = NULL;
922 struct rte_ether_hdr *eth_hdr =
923 rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
925 l3_hdr = (char *)eth_hdr + m->l2_len;
927 if (m->ol_flags & PKT_TX_IPV4) {
929 ipv4_hdr->hdr_checksum = 0;
930 m->ol_flags |= PKT_TX_IP_CKSUM;
933 tcp_hdr = (struct rte_tcp_hdr *)((char *)l3_hdr + m->l3_len);
934 tcp_hdr->cksum = get_psd_sum(l3_hdr, m->ol_flags);
938 free_pkts(struct rte_mbuf **pkts, uint16_t n)
941 rte_pktmbuf_free(pkts[n]);
944 static __rte_always_inline void
945 do_drain_mbuf_table(struct mbuf_table *tx_q)
949 count = rte_eth_tx_burst(ports[0], tx_q->txq_id,
950 tx_q->m_table, tx_q->len);
951 if (unlikely(count < tx_q->len))
952 free_pkts(&tx_q->m_table[count], tx_q->len - count);
958 * This function routes the TX packet to the correct interface. This
959 * may be a local device or the physical port.
961 static __rte_always_inline void
962 virtio_tx_route(struct vhost_dev *vdev, struct rte_mbuf *m, uint16_t vlan_tag)
964 struct mbuf_table *tx_q;
966 const uint16_t lcore_id = rte_lcore_id();
967 struct rte_ether_hdr *nh;
970 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
971 if (unlikely(rte_is_broadcast_ether_addr(&nh->d_addr))) {
972 struct vhost_dev *vdev2;
974 TAILQ_FOREACH(vdev2, &vhost_dev_list, global_vdev_entry) {
976 virtio_xmit(vdev2, vdev, m);
981 /*check if destination is local VM*/
982 if ((vm2vm_mode == VM2VM_SOFTWARE) && (virtio_tx_local(vdev, m) == 0)) {
987 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
988 if (unlikely(find_local_dest(vdev, m, &offset,
995 RTE_LOG_DP(DEBUG, VHOST_DATA,
996 "(%d) TX: MAC address is external\n", vdev->vid);
1000 /*Add packet to the port tx queue*/
1001 tx_q = &lcore_tx_queue[lcore_id];
1003 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
1004 if (unlikely(nh->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN))) {
1005 /* Guest has inserted the vlan tag. */
1006 struct rte_vlan_hdr *vh = (struct rte_vlan_hdr *) (nh + 1);
1007 uint16_t vlan_tag_be = rte_cpu_to_be_16(vlan_tag);
1008 if ((vm2vm_mode == VM2VM_HARDWARE) &&
1009 (vh->vlan_tci != vlan_tag_be))
1010 vh->vlan_tci = vlan_tag_be;
1012 m->ol_flags |= PKT_TX_VLAN_PKT;
1015 * Find the right seg to adjust the data len when offset is
1016 * bigger than tail room size.
1018 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
1019 if (likely(offset <= rte_pktmbuf_tailroom(m)))
1020 m->data_len += offset;
1022 struct rte_mbuf *seg = m;
1024 while ((seg->next != NULL) &&
1025 (offset > rte_pktmbuf_tailroom(seg)))
1028 seg->data_len += offset;
1030 m->pkt_len += offset;
1033 m->vlan_tci = vlan_tag;
1036 if (m->ol_flags & PKT_TX_TCP_SEG)
1037 virtio_tx_offload(m);
1039 tx_q->m_table[tx_q->len++] = m;
1041 vdev->stats.tx_total++;
1045 if (unlikely(tx_q->len == MAX_PKT_BURST))
1046 do_drain_mbuf_table(tx_q);
1050 static __rte_always_inline void
1051 drain_mbuf_table(struct mbuf_table *tx_q)
1053 static uint64_t prev_tsc;
1059 cur_tsc = rte_rdtsc();
1060 if (unlikely(cur_tsc - prev_tsc > MBUF_TABLE_DRAIN_TSC)) {
1063 RTE_LOG_DP(DEBUG, VHOST_DATA,
1064 "TX queue drained after timeout with burst size %u\n",
1066 do_drain_mbuf_table(tx_q);
1070 static __rte_always_inline void
1071 complete_async_pkts(struct vhost_dev *vdev, uint16_t qid)
1073 struct rte_mbuf *p_cpl[MAX_PKT_BURST];
1074 uint16_t complete_count;
1076 complete_count = rte_vhost_poll_enqueue_completed(vdev->vid,
1077 qid, p_cpl, MAX_PKT_BURST);
1078 vdev->nr_async_pkts -= complete_count;
1080 free_pkts(p_cpl, complete_count);
1083 static __rte_always_inline void
1084 drain_eth_rx(struct vhost_dev *vdev)
1086 uint16_t rx_count, enqueue_count;
1087 struct rte_mbuf *pkts[MAX_PKT_BURST];
1089 rx_count = rte_eth_rx_burst(ports[0], vdev->vmdq_rx_q,
1090 pkts, MAX_PKT_BURST);
1092 while (likely(vdev->nr_async_pkts))
1093 complete_async_pkts(vdev, VIRTIO_RXQ);
1099 * When "enable_retry" is set, here we wait and retry when there
1100 * is no enough free slots in the queue to hold @rx_count packets,
1101 * to diminish packet loss.
1104 unlikely(rx_count > rte_vhost_avail_entries(vdev->vid,
1108 for (retry = 0; retry < burst_rx_retry_num; retry++) {
1109 rte_delay_us(burst_rx_delay_time);
1110 if (rx_count <= rte_vhost_avail_entries(vdev->vid,
1116 if (builtin_net_driver) {
1117 enqueue_count = vs_enqueue_pkts(vdev, VIRTIO_RXQ,
1119 } else if (async_vhost_driver) {
1120 enqueue_count = rte_vhost_submit_enqueue_burst(vdev->vid,
1121 VIRTIO_RXQ, pkts, rx_count);
1122 vdev->nr_async_pkts += enqueue_count;
1124 enqueue_count = rte_vhost_enqueue_burst(vdev->vid, VIRTIO_RXQ,
1129 rte_atomic64_add(&vdev->stats.rx_total_atomic, rx_count);
1130 rte_atomic64_add(&vdev->stats.rx_atomic, enqueue_count);
1133 if (!async_vhost_driver)
1134 free_pkts(pkts, rx_count);
1137 static __rte_always_inline void
1138 drain_virtio_tx(struct vhost_dev *vdev)
1140 struct rte_mbuf *pkts[MAX_PKT_BURST];
1144 if (builtin_net_driver) {
1145 count = vs_dequeue_pkts(vdev, VIRTIO_TXQ, mbuf_pool,
1146 pkts, MAX_PKT_BURST);
1148 count = rte_vhost_dequeue_burst(vdev->vid, VIRTIO_TXQ,
1149 mbuf_pool, pkts, MAX_PKT_BURST);
1152 /* setup VMDq for the first packet */
1153 if (unlikely(vdev->ready == DEVICE_MAC_LEARNING) && count) {
1154 if (vdev->remove || link_vmdq(vdev, pkts[0]) == -1)
1155 free_pkts(pkts, count);
1158 for (i = 0; i < count; ++i)
1159 virtio_tx_route(vdev, pkts[i], vlan_tags[vdev->vid]);
1163 * Main function of vhost-switch. It basically does:
1165 * for each vhost device {
1168 * Which drains the host eth Rx queue linked to the vhost device,
1169 * and deliver all of them to guest virito Rx ring associated with
1170 * this vhost device.
1172 * - drain_virtio_tx()
1174 * Which drains the guest virtio Tx queue and deliver all of them
1175 * to the target, which could be another vhost device, or the
1176 * physical eth dev. The route is done in function "virtio_tx_route".
1180 switch_worker(void *arg __rte_unused)
1183 unsigned lcore_id = rte_lcore_id();
1184 struct vhost_dev *vdev;
1185 struct mbuf_table *tx_q;
1187 RTE_LOG(INFO, VHOST_DATA, "Procesing on Core %u started\n", lcore_id);
1189 tx_q = &lcore_tx_queue[lcore_id];
1190 for (i = 0; i < rte_lcore_count(); i++) {
1191 if (lcore_ids[i] == lcore_id) {
1198 drain_mbuf_table(tx_q);
1201 * Inform the configuration core that we have exited the
1202 * linked list and that no devices are in use if requested.
1204 if (lcore_info[lcore_id].dev_removal_flag == REQUEST_DEV_REMOVAL)
1205 lcore_info[lcore_id].dev_removal_flag = ACK_DEV_REMOVAL;
1208 * Process vhost devices
1210 TAILQ_FOREACH(vdev, &lcore_info[lcore_id].vdev_list,
1212 if (unlikely(vdev->remove)) {
1214 vdev->ready = DEVICE_SAFE_REMOVE;
1218 if (likely(vdev->ready == DEVICE_RX))
1221 if (likely(!vdev->remove))
1222 drain_virtio_tx(vdev);
1230 * Remove a device from the specific data core linked list and from the
1231 * main linked list. Synchonization occurs through the use of the
1232 * lcore dev_removal_flag. Device is made volatile here to avoid re-ordering
1233 * of dev->remove=1 which can cause an infinite loop in the rte_pause loop.
1236 destroy_device(int vid)
1238 struct vhost_dev *vdev = NULL;
1241 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1242 if (vdev->vid == vid)
1247 /*set the remove flag. */
1249 while(vdev->ready != DEVICE_SAFE_REMOVE) {
1253 if (builtin_net_driver)
1254 vs_vhost_net_remove(vdev);
1256 TAILQ_REMOVE(&lcore_info[vdev->coreid].vdev_list, vdev,
1258 TAILQ_REMOVE(&vhost_dev_list, vdev, global_vdev_entry);
1261 /* Set the dev_removal_flag on each lcore. */
1262 RTE_LCORE_FOREACH_WORKER(lcore)
1263 lcore_info[lcore].dev_removal_flag = REQUEST_DEV_REMOVAL;
1266 * Once each core has set the dev_removal_flag to ACK_DEV_REMOVAL
1267 * we can be sure that they can no longer access the device removed
1268 * from the linked lists and that the devices are no longer in use.
1270 RTE_LCORE_FOREACH_WORKER(lcore) {
1271 while (lcore_info[lcore].dev_removal_flag != ACK_DEV_REMOVAL)
1275 lcore_info[vdev->coreid].device_num--;
1277 RTE_LOG(INFO, VHOST_DATA,
1278 "(%d) device has been removed from data core\n",
1281 if (async_vhost_driver)
1282 rte_vhost_async_channel_unregister(vid, VIRTIO_RXQ);
1288 * A new device is added to a data core. First the device is added to the main linked list
1289 * and then allocated to a specific data core.
1294 int lcore, core_add = 0;
1295 uint32_t device_num_min = num_devices;
1296 struct vhost_dev *vdev;
1298 struct rte_vhost_async_channel_ops channel_ops = {
1299 .transfer_data = ioat_transfer_data_cb,
1300 .check_completed_copies = ioat_check_completed_copies_cb
1302 struct rte_vhost_async_features f;
1304 vdev = rte_zmalloc("vhost device", sizeof(*vdev), RTE_CACHE_LINE_SIZE);
1306 RTE_LOG(INFO, VHOST_DATA,
1307 "(%d) couldn't allocate memory for vhost dev\n",
1313 if (builtin_net_driver)
1314 vs_vhost_net_setup(vdev);
1316 TAILQ_INSERT_TAIL(&vhost_dev_list, vdev, global_vdev_entry);
1317 vdev->vmdq_rx_q = vid * queues_per_pool + vmdq_queue_base;
1319 /*reset ready flag*/
1320 vdev->ready = DEVICE_MAC_LEARNING;
1323 /* Find a suitable lcore to add the device. */
1324 RTE_LCORE_FOREACH_WORKER(lcore) {
1325 if (lcore_info[lcore].device_num < device_num_min) {
1326 device_num_min = lcore_info[lcore].device_num;
1330 vdev->coreid = core_add;
1332 TAILQ_INSERT_TAIL(&lcore_info[vdev->coreid].vdev_list, vdev,
1334 lcore_info[vdev->coreid].device_num++;
1336 /* Disable notifications. */
1337 rte_vhost_enable_guest_notification(vid, VIRTIO_RXQ, 0);
1338 rte_vhost_enable_guest_notification(vid, VIRTIO_TXQ, 0);
1340 RTE_LOG(INFO, VHOST_DATA,
1341 "(%d) device has been added to data core %d\n",
1344 if (async_vhost_driver) {
1345 f.async_inorder = 1;
1346 f.async_threshold = 256;
1347 return rte_vhost_async_channel_register(vid, VIRTIO_RXQ,
1348 f.intval, &channel_ops);
1355 * These callback allow devices to be added to the data core when configuration
1356 * has been fully complete.
1358 static const struct vhost_device_ops virtio_net_device_ops =
1360 .new_device = new_device,
1361 .destroy_device = destroy_device,
1365 * This is a thread will wake up after a period to print stats if the user has
1369 print_stats(__rte_unused void *arg)
1371 struct vhost_dev *vdev;
1372 uint64_t tx_dropped, rx_dropped;
1373 uint64_t tx, tx_total, rx, rx_total;
1374 const char clr[] = { 27, '[', '2', 'J', '\0' };
1375 const char top_left[] = { 27, '[', '1', ';', '1', 'H','\0' };
1378 sleep(enable_stats);
1380 /* Clear screen and move to top left */
1381 printf("%s%s\n", clr, top_left);
1382 printf("Device statistics =================================\n");
1384 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1385 tx_total = vdev->stats.tx_total;
1386 tx = vdev->stats.tx;
1387 tx_dropped = tx_total - tx;
1389 rx_total = rte_atomic64_read(&vdev->stats.rx_total_atomic);
1390 rx = rte_atomic64_read(&vdev->stats.rx_atomic);
1391 rx_dropped = rx_total - rx;
1393 printf("Statistics for device %d\n"
1394 "-----------------------\n"
1395 "TX total: %" PRIu64 "\n"
1396 "TX dropped: %" PRIu64 "\n"
1397 "TX successful: %" PRIu64 "\n"
1398 "RX total: %" PRIu64 "\n"
1399 "RX dropped: %" PRIu64 "\n"
1400 "RX successful: %" PRIu64 "\n",
1402 tx_total, tx_dropped, tx,
1403 rx_total, rx_dropped, rx);
1406 printf("===================================================\n");
1415 unregister_drivers(int socket_num)
1419 for (i = 0; i < socket_num; i++) {
1420 ret = rte_vhost_driver_unregister(socket_files + i * PATH_MAX);
1422 RTE_LOG(ERR, VHOST_CONFIG,
1423 "Fail to unregister vhost driver for %s.\n",
1424 socket_files + i * PATH_MAX);
1428 /* When we receive a INT signal, unregister vhost driver */
1430 sigint_handler(__rte_unused int signum)
1432 /* Unregister vhost driver. */
1433 unregister_drivers(nb_sockets);
1439 * While creating an mbuf pool, one key thing is to figure out how
1440 * many mbuf entries is enough for our use. FYI, here are some
1443 * - Each rx queue would reserve @nr_rx_desc mbufs at queue setup stage
1445 * - For each switch core (A CPU core does the packet switch), we need
1446 * also make some reservation for receiving the packets from virtio
1447 * Tx queue. How many is enough depends on the usage. It's normally
1448 * a simple calculation like following:
1450 * MAX_PKT_BURST * max packet size / mbuf size
1452 * So, we definitely need allocate more mbufs when TSO is enabled.
1454 * - Similarly, for each switching core, we should serve @nr_rx_desc
1455 * mbufs for receiving the packets from physical NIC device.
1457 * - We also need make sure, for each switch core, we have allocated
1458 * enough mbufs to fill up the mbuf cache.
1461 create_mbuf_pool(uint16_t nr_port, uint32_t nr_switch_core, uint32_t mbuf_size,
1462 uint32_t nr_queues, uint32_t nr_rx_desc, uint32_t nr_mbuf_cache)
1465 uint32_t nr_mbufs_per_core;
1466 uint32_t mtu = 1500;
1473 nr_mbufs_per_core = (mtu + mbuf_size) * MAX_PKT_BURST /
1474 (mbuf_size - RTE_PKTMBUF_HEADROOM);
1475 nr_mbufs_per_core += nr_rx_desc;
1476 nr_mbufs_per_core = RTE_MAX(nr_mbufs_per_core, nr_mbuf_cache);
1478 nr_mbufs = nr_queues * nr_rx_desc;
1479 nr_mbufs += nr_mbufs_per_core * nr_switch_core;
1480 nr_mbufs *= nr_port;
1482 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", nr_mbufs,
1483 nr_mbuf_cache, 0, mbuf_size,
1485 if (mbuf_pool == NULL)
1486 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
1490 * Main function, does initialisation and calls the per-lcore functions.
1493 main(int argc, char *argv[])
1495 unsigned lcore_id, core_id = 0;
1496 unsigned nb_ports, valid_num_ports;
1499 static pthread_t tid;
1502 signal(SIGINT, sigint_handler);
1505 ret = rte_eal_init(argc, argv);
1507 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
1511 /* parse app arguments */
1512 ret = us_vhost_parse_args(argc, argv);
1514 rte_exit(EXIT_FAILURE, "Invalid argument\n");
1516 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1517 TAILQ_INIT(&lcore_info[lcore_id].vdev_list);
1519 if (rte_lcore_is_enabled(lcore_id))
1520 lcore_ids[core_id++] = lcore_id;
1523 if (rte_lcore_count() > RTE_MAX_LCORE)
1524 rte_exit(EXIT_FAILURE,"Not enough cores\n");
1526 /* Get the number of physical ports. */
1527 nb_ports = rte_eth_dev_count_avail();
1530 * Update the global var NUM_PORTS and global array PORTS
1531 * and get value of var VALID_NUM_PORTS according to system ports number
1533 valid_num_ports = check_ports_num(nb_ports);
1535 if ((valid_num_ports == 0) || (valid_num_ports > MAX_SUP_PORTS)) {
1536 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
1537 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
1542 * FIXME: here we are trying to allocate mbufs big enough for
1543 * @MAX_QUEUES, but the truth is we're never going to use that
1544 * many queues here. We probably should only do allocation for
1545 * those queues we are going to use.
1547 create_mbuf_pool(valid_num_ports, rte_lcore_count() - 1, MBUF_DATA_SIZE,
1548 MAX_QUEUES, RTE_TEST_RX_DESC_DEFAULT, MBUF_CACHE_SIZE);
1550 if (vm2vm_mode == VM2VM_HARDWARE) {
1551 /* Enable VT loop back to let L2 switch to do it. */
1552 vmdq_conf_default.rx_adv_conf.vmdq_rx_conf.enable_loop_back = 1;
1553 RTE_LOG(DEBUG, VHOST_CONFIG,
1554 "Enable loop back for L2 switch in vmdq.\n");
1557 /* initialize all ports */
1558 RTE_ETH_FOREACH_DEV(portid) {
1559 /* skip ports that are not enabled */
1560 if ((enabled_port_mask & (1 << portid)) == 0) {
1561 RTE_LOG(INFO, VHOST_PORT,
1562 "Skipping disabled port %d\n", portid);
1565 if (port_init(portid) != 0)
1566 rte_exit(EXIT_FAILURE,
1567 "Cannot initialize network ports\n");
1570 /* Enable stats if the user option is set. */
1572 ret = rte_ctrl_thread_create(&tid, "print-stats", NULL,
1575 rte_exit(EXIT_FAILURE,
1576 "Cannot create print-stats thread\n");
1579 /* Launch all data cores. */
1580 RTE_LCORE_FOREACH_WORKER(lcore_id)
1581 rte_eal_remote_launch(switch_worker, NULL, lcore_id);
1584 flags |= RTE_VHOST_USER_CLIENT;
1586 /* Register vhost user driver to handle vhost messages. */
1587 for (i = 0; i < nb_sockets; i++) {
1588 char *file = socket_files + i * PATH_MAX;
1589 if (async_vhost_driver)
1590 flags = flags | RTE_VHOST_USER_ASYNC_COPY;
1592 ret = rte_vhost_driver_register(file, flags);
1594 unregister_drivers(i);
1595 rte_exit(EXIT_FAILURE,
1596 "vhost driver register failure.\n");
1599 if (builtin_net_driver)
1600 rte_vhost_driver_set_features(file, VIRTIO_NET_FEATURES);
1602 if (mergeable == 0) {
1603 rte_vhost_driver_disable_features(file,
1604 1ULL << VIRTIO_NET_F_MRG_RXBUF);
1607 if (enable_tx_csum == 0) {
1608 rte_vhost_driver_disable_features(file,
1609 1ULL << VIRTIO_NET_F_CSUM);
1612 if (enable_tso == 0) {
1613 rte_vhost_driver_disable_features(file,
1614 1ULL << VIRTIO_NET_F_HOST_TSO4);
1615 rte_vhost_driver_disable_features(file,
1616 1ULL << VIRTIO_NET_F_HOST_TSO6);
1617 rte_vhost_driver_disable_features(file,
1618 1ULL << VIRTIO_NET_F_GUEST_TSO4);
1619 rte_vhost_driver_disable_features(file,
1620 1ULL << VIRTIO_NET_F_GUEST_TSO6);
1624 rte_vhost_driver_enable_features(file,
1625 1ULL << VIRTIO_NET_F_CTRL_RX);
1628 ret = rte_vhost_driver_callback_register(file,
1629 &virtio_net_device_ops);
1631 rte_exit(EXIT_FAILURE,
1632 "failed to register vhost driver callbacks.\n");
1635 if (rte_vhost_driver_start(file) < 0) {
1636 rte_exit(EXIT_FAILURE,
1637 "failed to start vhost driver.\n");
1641 RTE_LCORE_FOREACH_WORKER(lcore_id)
1642 rte_eal_wait_lcore(lcore_id);