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_cycles.h>
18 #include <rte_ethdev.h>
20 #include <rte_string_fns.h>
21 #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 /* mask of enabled ports */
60 static uint32_t enabled_port_mask = 0;
62 /* Promiscuous mode */
63 static uint32_t promiscuous;
65 /* number of devices/queues to support*/
66 static uint32_t num_queues = 0;
67 static uint32_t num_devices;
69 static struct rte_mempool *mbuf_pool;
72 /* Enable VM2VM communications. If this is disabled then the MAC address compare is skipped. */
79 static vm2vm_type vm2vm_mode = VM2VM_SOFTWARE;
82 static uint32_t enable_stats = 0;
83 /* Enable retries on RX. */
84 static uint32_t enable_retry = 1;
86 /* Disable TX checksum offload */
87 static uint32_t enable_tx_csum;
89 /* Disable TSO offload */
90 static uint32_t enable_tso;
92 static int client_mode;
94 static int builtin_net_driver;
96 static int async_vhost_driver;
98 static char *dma_type;
100 /* Specify timeout (in useconds) between retries on RX. */
101 static uint32_t burst_rx_delay_time = BURST_RX_WAIT_US;
102 /* Specify the number of retries on RX. */
103 static uint32_t burst_rx_retry_num = BURST_RX_RETRIES;
105 /* Socket file paths. Can be set by user */
106 static char *socket_files;
107 static int nb_sockets;
109 /* empty vmdq configuration structure. Filled in programatically */
110 static struct rte_eth_conf vmdq_conf_default = {
112 .mq_mode = ETH_MQ_RX_VMDQ_ONLY,
115 * VLAN strip is necessary for 1G NIC such as I350,
116 * this fixes bug of ipv4 forwarding in guest can't
117 * forward pakets from one virtio dev to another virtio dev.
119 .offloads = DEV_RX_OFFLOAD_VLAN_STRIP,
123 .mq_mode = ETH_MQ_TX_NONE,
124 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
125 DEV_TX_OFFLOAD_TCP_CKSUM |
126 DEV_TX_OFFLOAD_VLAN_INSERT |
127 DEV_TX_OFFLOAD_MULTI_SEGS |
128 DEV_TX_OFFLOAD_TCP_TSO),
132 * should be overridden separately in code with
136 .nb_queue_pools = ETH_8_POOLS,
137 .enable_default_pool = 0,
140 .pool_map = {{0, 0},},
146 static unsigned lcore_ids[RTE_MAX_LCORE];
147 static uint16_t ports[RTE_MAX_ETHPORTS];
148 static unsigned num_ports = 0; /**< The number of ports specified in command line */
149 static uint16_t num_pf_queues, num_vmdq_queues;
150 static uint16_t vmdq_pool_base, vmdq_queue_base;
151 static uint16_t queues_per_pool;
153 const uint16_t vlan_tags[] = {
154 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007,
155 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015,
156 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023,
157 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031,
158 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039,
159 1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
160 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
161 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
164 /* ethernet addresses of ports */
165 static struct rte_ether_addr vmdq_ports_eth_addr[RTE_MAX_ETHPORTS];
167 static struct vhost_dev_tailq_list vhost_dev_list =
168 TAILQ_HEAD_INITIALIZER(vhost_dev_list);
170 static struct lcore_info lcore_info[RTE_MAX_LCORE];
172 /* Used for queueing bursts of TX packets. */
176 struct rte_mbuf *m_table[MAX_PKT_BURST];
179 struct vhost_bufftable {
182 struct rte_mbuf *m_table[MAX_PKT_BURST];
185 /* TX queue for each data core. */
186 struct mbuf_table lcore_tx_queue[RTE_MAX_LCORE];
189 * Vhost TX buffer for each data core.
190 * Every data core maintains a TX buffer for every vhost device,
191 * which is used for batch pkts enqueue for higher performance.
193 struct vhost_bufftable *vhost_txbuff[RTE_MAX_LCORE * MAX_VHOST_DEVICE];
195 #define MBUF_TABLE_DRAIN_TSC ((rte_get_tsc_hz() + US_PER_S - 1) \
196 / US_PER_S * BURST_TX_DRAIN_US)
200 open_dma(const char *value)
202 if (dma_type != NULL && strncmp(dma_type, "ioat", 4) == 0)
203 return open_ioat(value);
209 * Builds up the correct configuration for VMDQ VLAN pool map
210 * according to the pool & queue limits.
213 get_eth_conf(struct rte_eth_conf *eth_conf, uint32_t num_devices)
215 struct rte_eth_vmdq_rx_conf conf;
216 struct rte_eth_vmdq_rx_conf *def_conf =
217 &vmdq_conf_default.rx_adv_conf.vmdq_rx_conf;
220 memset(&conf, 0, sizeof(conf));
221 conf.nb_queue_pools = (enum rte_eth_nb_pools)num_devices;
222 conf.nb_pool_maps = num_devices;
223 conf.enable_loop_back = def_conf->enable_loop_back;
224 conf.rx_mode = def_conf->rx_mode;
226 for (i = 0; i < conf.nb_pool_maps; i++) {
227 conf.pool_map[i].vlan_id = vlan_tags[ i ];
228 conf.pool_map[i].pools = (1UL << i);
231 (void)(rte_memcpy(eth_conf, &vmdq_conf_default, sizeof(*eth_conf)));
232 (void)(rte_memcpy(ð_conf->rx_adv_conf.vmdq_rx_conf, &conf,
233 sizeof(eth_conf->rx_adv_conf.vmdq_rx_conf)));
238 * Initialises a given port using global settings and with the rx buffers
239 * coming from the mbuf_pool passed as parameter
242 port_init(uint16_t port)
244 struct rte_eth_dev_info dev_info;
245 struct rte_eth_conf port_conf;
246 struct rte_eth_rxconf *rxconf;
247 struct rte_eth_txconf *txconf;
248 int16_t rx_rings, tx_rings;
249 uint16_t rx_ring_size, tx_ring_size;
253 /* The max pool number from dev_info will be used to validate the pool number specified in cmd line */
254 retval = rte_eth_dev_info_get(port, &dev_info);
256 RTE_LOG(ERR, VHOST_PORT,
257 "Error during getting device (port %u) info: %s\n",
258 port, strerror(-retval));
263 rxconf = &dev_info.default_rxconf;
264 txconf = &dev_info.default_txconf;
265 rxconf->rx_drop_en = 1;
267 /*configure the number of supported virtio devices based on VMDQ limits */
268 num_devices = dev_info.max_vmdq_pools;
270 rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
271 tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
273 tx_rings = (uint16_t)rte_lcore_count();
275 /* Get port configuration. */
276 retval = get_eth_conf(&port_conf, num_devices);
279 /* NIC queues are divided into pf queues and vmdq queues. */
280 num_pf_queues = dev_info.max_rx_queues - dev_info.vmdq_queue_num;
281 queues_per_pool = dev_info.vmdq_queue_num / dev_info.max_vmdq_pools;
282 num_vmdq_queues = num_devices * queues_per_pool;
283 num_queues = num_pf_queues + num_vmdq_queues;
284 vmdq_queue_base = dev_info.vmdq_queue_base;
285 vmdq_pool_base = dev_info.vmdq_pool_base;
286 printf("pf queue num: %u, configured vmdq pool num: %u, each vmdq pool has %u queues\n",
287 num_pf_queues, num_devices, queues_per_pool);
289 if (!rte_eth_dev_is_valid_port(port))
292 rx_rings = (uint16_t)dev_info.max_rx_queues;
293 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
294 port_conf.txmode.offloads |=
295 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
296 /* Configure ethernet device. */
297 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
299 RTE_LOG(ERR, VHOST_PORT, "Failed to configure port %u: %s.\n",
300 port, strerror(-retval));
304 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rx_ring_size,
307 RTE_LOG(ERR, VHOST_PORT, "Failed to adjust number of descriptors "
308 "for port %u: %s.\n", port, strerror(-retval));
311 if (rx_ring_size > RTE_TEST_RX_DESC_DEFAULT) {
312 RTE_LOG(ERR, VHOST_PORT, "Mbuf pool has an insufficient size "
313 "for Rx queues on port %u.\n", port);
317 /* Setup the queues. */
318 rxconf->offloads = port_conf.rxmode.offloads;
319 for (q = 0; q < rx_rings; q ++) {
320 retval = rte_eth_rx_queue_setup(port, q, rx_ring_size,
321 rte_eth_dev_socket_id(port),
325 RTE_LOG(ERR, VHOST_PORT,
326 "Failed to setup rx queue %u of port %u: %s.\n",
327 q, port, strerror(-retval));
331 txconf->offloads = port_conf.txmode.offloads;
332 for (q = 0; q < tx_rings; q ++) {
333 retval = rte_eth_tx_queue_setup(port, q, tx_ring_size,
334 rte_eth_dev_socket_id(port),
337 RTE_LOG(ERR, VHOST_PORT,
338 "Failed to setup tx queue %u of port %u: %s.\n",
339 q, port, strerror(-retval));
344 /* Start the device. */
345 retval = rte_eth_dev_start(port);
347 RTE_LOG(ERR, VHOST_PORT, "Failed to start port %u: %s\n",
348 port, strerror(-retval));
353 retval = rte_eth_promiscuous_enable(port);
355 RTE_LOG(ERR, VHOST_PORT,
356 "Failed to enable promiscuous mode on port %u: %s\n",
357 port, rte_strerror(-retval));
362 retval = rte_eth_macaddr_get(port, &vmdq_ports_eth_addr[port]);
364 RTE_LOG(ERR, VHOST_PORT,
365 "Failed to get MAC address on port %u: %s\n",
366 port, rte_strerror(-retval));
370 RTE_LOG(INFO, VHOST_PORT, "Max virtio devices supported: %u\n", num_devices);
371 RTE_LOG(INFO, VHOST_PORT, "Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
372 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
373 port, RTE_ETHER_ADDR_BYTES(&vmdq_ports_eth_addr[port]));
379 * Set socket file path.
382 us_vhost_parse_socket_path(const char *q_arg)
386 /* parse number string */
387 if (strnlen(q_arg, PATH_MAX) == PATH_MAX)
391 socket_files = realloc(socket_files, PATH_MAX * (nb_sockets + 1));
392 if (socket_files == NULL) {
397 strlcpy(socket_files + nb_sockets * PATH_MAX, q_arg, PATH_MAX);
404 * Parse the portmask provided at run time.
407 parse_portmask(const char *portmask)
414 /* parse hexadecimal string */
415 pm = strtoul(portmask, &end, 16);
416 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
424 * Parse num options at run time.
427 parse_num_opt(const char *q_arg, uint32_t max_valid_value)
434 /* parse unsigned int string */
435 num = strtoul(q_arg, &end, 10);
436 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
439 if (num > max_valid_value)
450 us_vhost_usage(const char *prgname)
452 RTE_LOG(INFO, VHOST_CONFIG, "%s [EAL options] -- -p PORTMASK\n"
454 " --rx_retry [0|1] --mergeable [0|1] --stats [0-N]\n"
455 " --socket-file <path>\n"
457 " -p PORTMASK: Set mask for ports to be used by application\n"
458 " --vm2vm [0|1|2]: disable/software(default)/hardware vm2vm comms\n"
459 " --rx-retry [0|1]: disable/enable(default) retries on rx. Enable retry if destintation queue is full\n"
460 " --rx-retry-delay [0-N]: timeout(in usecond) between retries on RX. This makes effect only if retries on rx enabled\n"
461 " --rx-retry-num [0-N]: the number of retries on rx. This makes effect only if retries on rx enabled\n"
462 " --mergeable [0|1]: disable(default)/enable RX mergeable buffers\n"
463 " --stats [0-N]: 0: Disable stats, N: Time in seconds to print stats\n"
464 " --socket-file: The path of the socket file.\n"
465 " --tx-csum [0|1] disable/enable TX checksum offload.\n"
466 " --tso [0|1] disable/enable TCP segment offload.\n"
467 " --client register a vhost-user socket as client mode.\n"
468 " --dma-type register dma type for your vhost async driver. For example \"ioat\" for now.\n"
469 " --dmas register dma channel for specific vhost device.\n",
474 #define OPT_VM2VM "vm2vm"
476 #define OPT_RX_RETRY "rx-retry"
478 #define OPT_RX_RETRY_DELAY "rx-retry-delay"
479 OPT_RX_RETRY_DELAY_NUM,
480 #define OPT_RX_RETRY_NUMB "rx-retry-num"
481 OPT_RX_RETRY_NUMB_NUM,
482 #define OPT_MERGEABLE "mergeable"
484 #define OPT_STATS "stats"
486 #define OPT_SOCKET_FILE "socket-file"
488 #define OPT_TX_CSUM "tx-csum"
490 #define OPT_TSO "tso"
492 #define OPT_CLIENT "client"
494 #define OPT_BUILTIN_NET_DRIVER "builtin-net-driver"
495 OPT_BUILTIN_NET_DRIVER_NUM,
496 #define OPT_DMA_TYPE "dma-type"
498 #define OPT_DMAS "dmas"
503 * Parse the arguments given in the command line of the application.
506 us_vhost_parse_args(int argc, char **argv)
511 const char *prgname = argv[0];
512 static struct option long_option[] = {
513 {OPT_VM2VM, required_argument,
514 NULL, OPT_VM2VM_NUM},
515 {OPT_RX_RETRY, required_argument,
516 NULL, OPT_RX_RETRY_NUM},
517 {OPT_RX_RETRY_DELAY, required_argument,
518 NULL, OPT_RX_RETRY_DELAY_NUM},
519 {OPT_RX_RETRY_NUMB, required_argument,
520 NULL, OPT_RX_RETRY_NUMB_NUM},
521 {OPT_MERGEABLE, required_argument,
522 NULL, OPT_MERGEABLE_NUM},
523 {OPT_STATS, required_argument,
524 NULL, OPT_STATS_NUM},
525 {OPT_SOCKET_FILE, required_argument,
526 NULL, OPT_SOCKET_FILE_NUM},
527 {OPT_TX_CSUM, required_argument,
528 NULL, OPT_TX_CSUM_NUM},
529 {OPT_TSO, required_argument,
531 {OPT_CLIENT, no_argument,
532 NULL, OPT_CLIENT_NUM},
533 {OPT_BUILTIN_NET_DRIVER, no_argument,
534 NULL, OPT_BUILTIN_NET_DRIVER_NUM},
535 {OPT_DMA_TYPE, required_argument,
536 NULL, OPT_DMA_TYPE_NUM},
537 {OPT_DMAS, required_argument,
542 /* Parse command line */
543 while ((opt = getopt_long(argc, argv, "p:P",
544 long_option, &option_index)) != EOF) {
548 enabled_port_mask = parse_portmask(optarg);
549 if (enabled_port_mask == 0) {
550 RTE_LOG(INFO, VHOST_CONFIG, "Invalid portmask\n");
551 us_vhost_usage(prgname);
558 vmdq_conf_default.rx_adv_conf.vmdq_rx_conf.rx_mode =
559 ETH_VMDQ_ACCEPT_BROADCAST |
560 ETH_VMDQ_ACCEPT_MULTICAST;
564 ret = parse_num_opt(optarg, (VM2VM_LAST - 1));
566 RTE_LOG(INFO, VHOST_CONFIG,
567 "Invalid argument for "
569 us_vhost_usage(prgname);
572 vm2vm_mode = (vm2vm_type)ret;
575 case OPT_RX_RETRY_NUM:
576 ret = parse_num_opt(optarg, 1);
578 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry [0|1]\n");
579 us_vhost_usage(prgname);
585 case OPT_TX_CSUM_NUM:
586 ret = parse_num_opt(optarg, 1);
588 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for tx-csum [0|1]\n");
589 us_vhost_usage(prgname);
592 enable_tx_csum = ret;
596 ret = parse_num_opt(optarg, 1);
598 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for tso [0|1]\n");
599 us_vhost_usage(prgname);
605 case OPT_RX_RETRY_DELAY_NUM:
606 ret = parse_num_opt(optarg, INT32_MAX);
608 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry-delay [0-N]\n");
609 us_vhost_usage(prgname);
612 burst_rx_delay_time = ret;
615 case OPT_RX_RETRY_NUMB_NUM:
616 ret = parse_num_opt(optarg, INT32_MAX);
618 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for rx-retry-num [0-N]\n");
619 us_vhost_usage(prgname);
622 burst_rx_retry_num = ret;
625 case OPT_MERGEABLE_NUM:
626 ret = parse_num_opt(optarg, 1);
628 RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for mergeable [0|1]\n");
629 us_vhost_usage(prgname);
634 vmdq_conf_default.rxmode.offloads |=
635 DEV_RX_OFFLOAD_JUMBO_FRAME;
636 vmdq_conf_default.rxmode.max_rx_pkt_len
637 = JUMBO_FRAME_MAX_SIZE;
642 ret = parse_num_opt(optarg, INT32_MAX);
644 RTE_LOG(INFO, VHOST_CONFIG,
645 "Invalid argument for stats [0..N]\n");
646 us_vhost_usage(prgname);
652 /* Set socket file path. */
653 case OPT_SOCKET_FILE_NUM:
654 if (us_vhost_parse_socket_path(optarg) == -1) {
655 RTE_LOG(INFO, VHOST_CONFIG,
656 "Invalid argument for socket name (Max %d characters)\n",
658 us_vhost_usage(prgname);
663 case OPT_DMA_TYPE_NUM:
668 if (open_dma(optarg) == -1) {
669 RTE_LOG(INFO, VHOST_CONFIG,
671 us_vhost_usage(prgname);
674 async_vhost_driver = 1;
681 case OPT_BUILTIN_NET_DRIVER_NUM:
682 builtin_net_driver = 1;
685 /* Invalid option - print options. */
687 us_vhost_usage(prgname);
692 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
693 if (enabled_port_mask & (1 << i))
694 ports[num_ports++] = i;
697 if ((num_ports == 0) || (num_ports > MAX_SUP_PORTS)) {
698 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
699 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
707 * Update the global var NUM_PORTS and array PORTS according to system ports number
708 * and return valid ports number
710 static unsigned check_ports_num(unsigned nb_ports)
712 unsigned valid_num_ports = num_ports;
715 if (num_ports > nb_ports) {
716 RTE_LOG(INFO, VHOST_PORT, "\nSpecified port number(%u) exceeds total system port number(%u)\n",
717 num_ports, nb_ports);
718 num_ports = nb_ports;
721 for (portid = 0; portid < num_ports; portid ++) {
722 if (!rte_eth_dev_is_valid_port(ports[portid])) {
723 RTE_LOG(INFO, VHOST_PORT,
724 "\nSpecified port ID(%u) is not valid\n",
726 ports[portid] = INVALID_PORT_ID;
730 return valid_num_ports;
733 static __rte_always_inline struct vhost_dev *
734 find_vhost_dev(struct rte_ether_addr *mac)
736 struct vhost_dev *vdev;
738 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
739 if (vdev->ready == DEVICE_RX &&
740 rte_is_same_ether_addr(mac, &vdev->mac_address))
748 * This function learns the MAC address of the device and registers this along with a
749 * vlan tag to a VMDQ.
752 link_vmdq(struct vhost_dev *vdev, struct rte_mbuf *m)
754 struct rte_ether_hdr *pkt_hdr;
757 /* Learn MAC address of guest device from packet */
758 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
760 if (find_vhost_dev(&pkt_hdr->s_addr)) {
761 RTE_LOG(ERR, VHOST_DATA,
762 "(%d) device is using a registered MAC!\n",
767 for (i = 0; i < RTE_ETHER_ADDR_LEN; i++)
768 vdev->mac_address.addr_bytes[i] = pkt_hdr->s_addr.addr_bytes[i];
770 /* vlan_tag currently uses the device_id. */
771 vdev->vlan_tag = vlan_tags[vdev->vid];
773 /* Print out VMDQ registration info. */
774 RTE_LOG(INFO, VHOST_DATA,
775 "(%d) mac " RTE_ETHER_ADDR_PRT_FMT " and vlan %d registered\n",
776 vdev->vid, RTE_ETHER_ADDR_BYTES(&vdev->mac_address),
779 /* Register the MAC address. */
780 ret = rte_eth_dev_mac_addr_add(ports[0], &vdev->mac_address,
781 (uint32_t)vdev->vid + vmdq_pool_base);
783 RTE_LOG(ERR, VHOST_DATA,
784 "(%d) failed to add device MAC address to VMDQ\n",
787 rte_eth_dev_set_vlan_strip_on_queue(ports[0], vdev->vmdq_rx_q, 1);
789 /* Set device as ready for RX. */
790 vdev->ready = DEVICE_RX;
796 * Removes MAC address and vlan tag from VMDQ. Ensures that nothing is adding buffers to the RX
797 * queue before disabling RX on the device.
800 unlink_vmdq(struct vhost_dev *vdev)
804 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
806 if (vdev->ready == DEVICE_RX) {
807 /*clear MAC and VLAN settings*/
808 rte_eth_dev_mac_addr_remove(ports[0], &vdev->mac_address);
809 for (i = 0; i < 6; i++)
810 vdev->mac_address.addr_bytes[i] = 0;
814 /*Clear out the receive buffers*/
815 rx_count = rte_eth_rx_burst(ports[0],
816 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
819 for (i = 0; i < rx_count; i++)
820 rte_pktmbuf_free(pkts_burst[i]);
822 rx_count = rte_eth_rx_burst(ports[0],
823 (uint16_t)vdev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST);
826 vdev->ready = DEVICE_MAC_LEARNING;
831 free_pkts(struct rte_mbuf **pkts, uint16_t n)
834 rte_pktmbuf_free(pkts[n]);
837 static __rte_always_inline void
838 complete_async_pkts(struct vhost_dev *vdev)
840 struct rte_mbuf *p_cpl[MAX_PKT_BURST];
841 uint16_t complete_count;
843 complete_count = rte_vhost_poll_enqueue_completed(vdev->vid,
844 VIRTIO_RXQ, p_cpl, MAX_PKT_BURST);
845 if (complete_count) {
846 free_pkts(p_cpl, complete_count);
847 __atomic_sub_fetch(&vdev->pkts_inflight, complete_count, __ATOMIC_SEQ_CST);
852 static __rte_always_inline void
853 sync_virtio_xmit(struct vhost_dev *dst_vdev, struct vhost_dev *src_vdev,
858 if (builtin_net_driver) {
859 ret = vs_enqueue_pkts(dst_vdev, VIRTIO_RXQ, &m, 1);
861 ret = rte_vhost_enqueue_burst(dst_vdev->vid, VIRTIO_RXQ, &m, 1);
865 __atomic_add_fetch(&dst_vdev->stats.rx_total_atomic, 1,
867 __atomic_add_fetch(&dst_vdev->stats.rx_atomic, ret,
869 src_vdev->stats.tx_total++;
870 src_vdev->stats.tx += ret;
874 static __rte_always_inline void
875 drain_vhost(struct vhost_dev *vdev)
878 uint32_t buff_idx = rte_lcore_id() * MAX_VHOST_DEVICE + vdev->vid;
879 uint16_t nr_xmit = vhost_txbuff[buff_idx]->len;
880 struct rte_mbuf **m = vhost_txbuff[buff_idx]->m_table;
882 if (builtin_net_driver) {
883 ret = vs_enqueue_pkts(vdev, VIRTIO_RXQ, m, nr_xmit);
884 } else if (async_vhost_driver) {
885 uint32_t cpu_cpl_nr = 0;
886 uint16_t enqueue_fail = 0;
887 struct rte_mbuf *m_cpu_cpl[nr_xmit];
889 complete_async_pkts(vdev);
890 ret = rte_vhost_submit_enqueue_burst(vdev->vid, VIRTIO_RXQ,
891 m, nr_xmit, m_cpu_cpl, &cpu_cpl_nr);
892 __atomic_add_fetch(&vdev->pkts_inflight, ret - cpu_cpl_nr, __ATOMIC_SEQ_CST);
895 free_pkts(m_cpu_cpl, cpu_cpl_nr);
897 enqueue_fail = nr_xmit - ret;
899 free_pkts(&m[ret], nr_xmit - ret);
901 ret = rte_vhost_enqueue_burst(vdev->vid, VIRTIO_RXQ,
906 __atomic_add_fetch(&vdev->stats.rx_total_atomic, nr_xmit,
908 __atomic_add_fetch(&vdev->stats.rx_atomic, ret,
912 if (!async_vhost_driver)
913 free_pkts(m, nr_xmit);
916 static __rte_always_inline void
917 drain_vhost_table(void)
919 uint16_t lcore_id = rte_lcore_id();
920 struct vhost_bufftable *vhost_txq;
921 struct vhost_dev *vdev;
924 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
925 vhost_txq = vhost_txbuff[lcore_id * MAX_VHOST_DEVICE
928 cur_tsc = rte_rdtsc();
929 if (unlikely(cur_tsc - vhost_txq->pre_tsc
930 > MBUF_TABLE_DRAIN_TSC)) {
931 RTE_LOG_DP(DEBUG, VHOST_DATA,
932 "Vhost TX queue drained after timeout with burst size %u\n",
936 vhost_txq->pre_tsc = cur_tsc;
942 * Check if the packet destination MAC address is for a local device. If so then put
943 * the packet on that devices RX queue. If not then return.
945 static __rte_always_inline int
946 virtio_tx_local(struct vhost_dev *vdev, struct rte_mbuf *m)
948 struct rte_ether_hdr *pkt_hdr;
949 struct vhost_dev *dst_vdev;
950 struct vhost_bufftable *vhost_txq;
951 uint16_t lcore_id = rte_lcore_id();
952 pkt_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
954 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
958 if (vdev->vid == dst_vdev->vid) {
959 RTE_LOG_DP(DEBUG, VHOST_DATA,
960 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
965 RTE_LOG_DP(DEBUG, VHOST_DATA,
966 "(%d) TX: MAC address is local\n", dst_vdev->vid);
968 if (unlikely(dst_vdev->remove)) {
969 RTE_LOG_DP(DEBUG, VHOST_DATA,
970 "(%d) device is marked for removal\n", dst_vdev->vid);
974 vhost_txq = vhost_txbuff[lcore_id * MAX_VHOST_DEVICE + dst_vdev->vid];
975 vhost_txq->m_table[vhost_txq->len++] = m;
978 vdev->stats.tx_total++;
982 if (unlikely(vhost_txq->len == MAX_PKT_BURST)) {
983 drain_vhost(dst_vdev);
985 vhost_txq->pre_tsc = rte_rdtsc();
991 * Check if the destination MAC of a packet is one local VM,
992 * and get its vlan tag, and offset if it is.
994 static __rte_always_inline int
995 find_local_dest(struct vhost_dev *vdev, struct rte_mbuf *m,
996 uint32_t *offset, uint16_t *vlan_tag)
998 struct vhost_dev *dst_vdev;
999 struct rte_ether_hdr *pkt_hdr =
1000 rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
1002 dst_vdev = find_vhost_dev(&pkt_hdr->d_addr);
1006 if (vdev->vid == dst_vdev->vid) {
1007 RTE_LOG_DP(DEBUG, VHOST_DATA,
1008 "(%d) TX: src and dst MAC is same. Dropping packet.\n",
1014 * HW vlan strip will reduce the packet length
1015 * by minus length of vlan tag, so need restore
1016 * the packet length by plus it.
1018 *offset = VLAN_HLEN;
1019 *vlan_tag = vlan_tags[vdev->vid];
1021 RTE_LOG_DP(DEBUG, VHOST_DATA,
1022 "(%d) TX: pkt to local VM device id: (%d), vlan tag: %u.\n",
1023 vdev->vid, dst_vdev->vid, *vlan_tag);
1028 static void virtio_tx_offload(struct rte_mbuf *m)
1030 struct rte_net_hdr_lens hdr_lens;
1031 struct rte_ipv4_hdr *ipv4_hdr;
1032 struct rte_tcp_hdr *tcp_hdr;
1036 ptype = rte_net_get_ptype(m, &hdr_lens, RTE_PTYPE_ALL_MASK);
1037 m->l2_len = hdr_lens.l2_len;
1038 m->l3_len = hdr_lens.l3_len;
1039 m->l4_len = hdr_lens.l4_len;
1041 l3_hdr = rte_pktmbuf_mtod_offset(m, void *, m->l2_len);
1042 tcp_hdr = rte_pktmbuf_mtod_offset(m, struct rte_tcp_hdr *,
1043 m->l2_len + m->l3_len);
1045 m->ol_flags |= PKT_TX_TCP_SEG;
1046 if ((ptype & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) {
1047 m->ol_flags |= PKT_TX_IPV4;
1048 m->ol_flags |= PKT_TX_IP_CKSUM;
1050 ipv4_hdr->hdr_checksum = 0;
1051 tcp_hdr->cksum = rte_ipv4_phdr_cksum(l3_hdr, m->ol_flags);
1052 } else { /* assume ethertype == RTE_ETHER_TYPE_IPV6 */
1053 m->ol_flags |= PKT_TX_IPV6;
1054 tcp_hdr->cksum = rte_ipv6_phdr_cksum(l3_hdr, m->ol_flags);
1058 static __rte_always_inline void
1059 do_drain_mbuf_table(struct mbuf_table *tx_q)
1063 count = rte_eth_tx_burst(ports[0], tx_q->txq_id,
1064 tx_q->m_table, tx_q->len);
1065 if (unlikely(count < tx_q->len))
1066 free_pkts(&tx_q->m_table[count], tx_q->len - count);
1072 * This function routes the TX packet to the correct interface. This
1073 * may be a local device or the physical port.
1075 static __rte_always_inline void
1076 virtio_tx_route(struct vhost_dev *vdev, struct rte_mbuf *m, uint16_t vlan_tag)
1078 struct mbuf_table *tx_q;
1079 unsigned offset = 0;
1080 const uint16_t lcore_id = rte_lcore_id();
1081 struct rte_ether_hdr *nh;
1084 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
1085 if (unlikely(rte_is_broadcast_ether_addr(&nh->d_addr))) {
1086 struct vhost_dev *vdev2;
1088 TAILQ_FOREACH(vdev2, &vhost_dev_list, global_vdev_entry) {
1090 sync_virtio_xmit(vdev2, vdev, m);
1095 /*check if destination is local VM*/
1096 if ((vm2vm_mode == VM2VM_SOFTWARE) && (virtio_tx_local(vdev, m) == 0))
1099 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
1100 if (unlikely(find_local_dest(vdev, m, &offset,
1102 rte_pktmbuf_free(m);
1107 RTE_LOG_DP(DEBUG, VHOST_DATA,
1108 "(%d) TX: MAC address is external\n", vdev->vid);
1112 /*Add packet to the port tx queue*/
1113 tx_q = &lcore_tx_queue[lcore_id];
1115 nh = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
1116 if (unlikely(nh->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN))) {
1117 /* Guest has inserted the vlan tag. */
1118 struct rte_vlan_hdr *vh = (struct rte_vlan_hdr *) (nh + 1);
1119 uint16_t vlan_tag_be = rte_cpu_to_be_16(vlan_tag);
1120 if ((vm2vm_mode == VM2VM_HARDWARE) &&
1121 (vh->vlan_tci != vlan_tag_be))
1122 vh->vlan_tci = vlan_tag_be;
1124 m->ol_flags |= PKT_TX_VLAN_PKT;
1127 * Find the right seg to adjust the data len when offset is
1128 * bigger than tail room size.
1130 if (unlikely(vm2vm_mode == VM2VM_HARDWARE)) {
1131 if (likely(offset <= rte_pktmbuf_tailroom(m)))
1132 m->data_len += offset;
1134 struct rte_mbuf *seg = m;
1136 while ((seg->next != NULL) &&
1137 (offset > rte_pktmbuf_tailroom(seg)))
1140 seg->data_len += offset;
1142 m->pkt_len += offset;
1145 m->vlan_tci = vlan_tag;
1148 if (m->ol_flags & PKT_RX_LRO)
1149 virtio_tx_offload(m);
1151 tx_q->m_table[tx_q->len++] = m;
1153 vdev->stats.tx_total++;
1157 if (unlikely(tx_q->len == MAX_PKT_BURST))
1158 do_drain_mbuf_table(tx_q);
1162 static __rte_always_inline void
1163 drain_mbuf_table(struct mbuf_table *tx_q)
1165 static uint64_t prev_tsc;
1171 cur_tsc = rte_rdtsc();
1172 if (unlikely(cur_tsc - prev_tsc > MBUF_TABLE_DRAIN_TSC)) {
1175 RTE_LOG_DP(DEBUG, VHOST_DATA,
1176 "TX queue drained after timeout with burst size %u\n",
1178 do_drain_mbuf_table(tx_q);
1182 static __rte_always_inline void
1183 drain_eth_rx(struct vhost_dev *vdev)
1185 uint16_t rx_count, enqueue_count;
1186 struct rte_mbuf *pkts[MAX_PKT_BURST];
1188 rx_count = rte_eth_rx_burst(ports[0], vdev->vmdq_rx_q,
1189 pkts, MAX_PKT_BURST);
1195 * When "enable_retry" is set, here we wait and retry when there
1196 * is no enough free slots in the queue to hold @rx_count packets,
1197 * to diminish packet loss.
1200 unlikely(rx_count > rte_vhost_avail_entries(vdev->vid,
1204 for (retry = 0; retry < burst_rx_retry_num; retry++) {
1205 rte_delay_us(burst_rx_delay_time);
1206 if (rx_count <= rte_vhost_avail_entries(vdev->vid,
1212 if (builtin_net_driver) {
1213 enqueue_count = vs_enqueue_pkts(vdev, VIRTIO_RXQ,
1215 } else if (async_vhost_driver) {
1216 uint32_t cpu_cpl_nr = 0;
1217 uint16_t enqueue_fail = 0;
1218 struct rte_mbuf *m_cpu_cpl[MAX_PKT_BURST];
1220 complete_async_pkts(vdev);
1221 enqueue_count = rte_vhost_submit_enqueue_burst(vdev->vid,
1222 VIRTIO_RXQ, pkts, rx_count,
1223 m_cpu_cpl, &cpu_cpl_nr);
1224 __atomic_add_fetch(&vdev->pkts_inflight, enqueue_count - cpu_cpl_nr,
1228 free_pkts(m_cpu_cpl, cpu_cpl_nr);
1230 enqueue_fail = rx_count - enqueue_count;
1232 free_pkts(&pkts[enqueue_count], enqueue_fail);
1235 enqueue_count = rte_vhost_enqueue_burst(vdev->vid, VIRTIO_RXQ,
1240 __atomic_add_fetch(&vdev->stats.rx_total_atomic, rx_count,
1242 __atomic_add_fetch(&vdev->stats.rx_atomic, enqueue_count,
1246 if (!async_vhost_driver)
1247 free_pkts(pkts, rx_count);
1250 static __rte_always_inline void
1251 drain_virtio_tx(struct vhost_dev *vdev)
1253 struct rte_mbuf *pkts[MAX_PKT_BURST];
1257 if (builtin_net_driver) {
1258 count = vs_dequeue_pkts(vdev, VIRTIO_TXQ, mbuf_pool,
1259 pkts, MAX_PKT_BURST);
1261 count = rte_vhost_dequeue_burst(vdev->vid, VIRTIO_TXQ,
1262 mbuf_pool, pkts, MAX_PKT_BURST);
1265 /* setup VMDq for the first packet */
1266 if (unlikely(vdev->ready == DEVICE_MAC_LEARNING) && count) {
1267 if (vdev->remove || link_vmdq(vdev, pkts[0]) == -1)
1268 free_pkts(pkts, count);
1271 for (i = 0; i < count; ++i)
1272 virtio_tx_route(vdev, pkts[i], vlan_tags[vdev->vid]);
1276 * Main function of vhost-switch. It basically does:
1278 * for each vhost device {
1281 * Which drains the host eth Rx queue linked to the vhost device,
1282 * and deliver all of them to guest virito Rx ring associated with
1283 * this vhost device.
1285 * - drain_virtio_tx()
1287 * Which drains the guest virtio Tx queue and deliver all of them
1288 * to the target, which could be another vhost device, or the
1289 * physical eth dev. The route is done in function "virtio_tx_route".
1293 switch_worker(void *arg __rte_unused)
1296 unsigned lcore_id = rte_lcore_id();
1297 struct vhost_dev *vdev;
1298 struct mbuf_table *tx_q;
1300 RTE_LOG(INFO, VHOST_DATA, "Procesing on Core %u started\n", lcore_id);
1302 tx_q = &lcore_tx_queue[lcore_id];
1303 for (i = 0; i < rte_lcore_count(); i++) {
1304 if (lcore_ids[i] == lcore_id) {
1311 drain_mbuf_table(tx_q);
1312 drain_vhost_table();
1314 * Inform the configuration core that we have exited the
1315 * linked list and that no devices are in use if requested.
1317 if (lcore_info[lcore_id].dev_removal_flag == REQUEST_DEV_REMOVAL)
1318 lcore_info[lcore_id].dev_removal_flag = ACK_DEV_REMOVAL;
1321 * Process vhost devices
1323 TAILQ_FOREACH(vdev, &lcore_info[lcore_id].vdev_list,
1325 if (unlikely(vdev->remove)) {
1327 vdev->ready = DEVICE_SAFE_REMOVE;
1331 if (likely(vdev->ready == DEVICE_RX))
1334 if (likely(!vdev->remove))
1335 drain_virtio_tx(vdev);
1343 * Remove a device from the specific data core linked list and from the
1344 * main linked list. Synchonization occurs through the use of the
1345 * lcore dev_removal_flag. Device is made volatile here to avoid re-ordering
1346 * of dev->remove=1 which can cause an infinite loop in the rte_pause loop.
1349 destroy_device(int vid)
1351 struct vhost_dev *vdev = NULL;
1355 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1356 if (vdev->vid == vid)
1361 /*set the remove flag. */
1363 while(vdev->ready != DEVICE_SAFE_REMOVE) {
1367 for (i = 0; i < RTE_MAX_LCORE; i++)
1368 rte_free(vhost_txbuff[i * MAX_VHOST_DEVICE + vid]);
1370 if (builtin_net_driver)
1371 vs_vhost_net_remove(vdev);
1373 TAILQ_REMOVE(&lcore_info[vdev->coreid].vdev_list, vdev,
1375 TAILQ_REMOVE(&vhost_dev_list, vdev, global_vdev_entry);
1378 /* Set the dev_removal_flag on each lcore. */
1379 RTE_LCORE_FOREACH_WORKER(lcore)
1380 lcore_info[lcore].dev_removal_flag = REQUEST_DEV_REMOVAL;
1383 * Once each core has set the dev_removal_flag to ACK_DEV_REMOVAL
1384 * we can be sure that they can no longer access the device removed
1385 * from the linked lists and that the devices are no longer in use.
1387 RTE_LCORE_FOREACH_WORKER(lcore) {
1388 while (lcore_info[lcore].dev_removal_flag != ACK_DEV_REMOVAL)
1392 lcore_info[vdev->coreid].device_num--;
1394 RTE_LOG(INFO, VHOST_DATA,
1395 "(%d) device has been removed from data core\n",
1398 if (async_vhost_driver) {
1400 struct rte_mbuf *m_cpl[vdev->pkts_inflight];
1402 while (vdev->pkts_inflight) {
1403 n_pkt = rte_vhost_clear_queue_thread_unsafe(vid, VIRTIO_RXQ,
1404 m_cpl, vdev->pkts_inflight);
1405 free_pkts(m_cpl, n_pkt);
1406 __atomic_sub_fetch(&vdev->pkts_inflight, n_pkt, __ATOMIC_SEQ_CST);
1409 rte_vhost_async_channel_unregister(vid, VIRTIO_RXQ);
1416 * A new device is added to a data core. First the device is added to the main linked list
1417 * and then allocated to a specific data core.
1422 int lcore, core_add = 0;
1424 uint32_t device_num_min = num_devices;
1425 struct vhost_dev *vdev;
1426 vdev = rte_zmalloc("vhost device", sizeof(*vdev), RTE_CACHE_LINE_SIZE);
1428 RTE_LOG(INFO, VHOST_DATA,
1429 "(%d) couldn't allocate memory for vhost dev\n",
1435 for (i = 0; i < RTE_MAX_LCORE; i++) {
1436 vhost_txbuff[i * MAX_VHOST_DEVICE + vid]
1437 = rte_zmalloc("vhost bufftable",
1438 sizeof(struct vhost_bufftable),
1439 RTE_CACHE_LINE_SIZE);
1441 if (vhost_txbuff[i * MAX_VHOST_DEVICE + vid] == NULL) {
1442 RTE_LOG(INFO, VHOST_DATA,
1443 "(%d) couldn't allocate memory for vhost TX\n", vid);
1448 if (builtin_net_driver)
1449 vs_vhost_net_setup(vdev);
1451 TAILQ_INSERT_TAIL(&vhost_dev_list, vdev, global_vdev_entry);
1452 vdev->vmdq_rx_q = vid * queues_per_pool + vmdq_queue_base;
1454 /*reset ready flag*/
1455 vdev->ready = DEVICE_MAC_LEARNING;
1458 /* Find a suitable lcore to add the device. */
1459 RTE_LCORE_FOREACH_WORKER(lcore) {
1460 if (lcore_info[lcore].device_num < device_num_min) {
1461 device_num_min = lcore_info[lcore].device_num;
1465 vdev->coreid = core_add;
1467 TAILQ_INSERT_TAIL(&lcore_info[vdev->coreid].vdev_list, vdev,
1469 lcore_info[vdev->coreid].device_num++;
1471 /* Disable notifications. */
1472 rte_vhost_enable_guest_notification(vid, VIRTIO_RXQ, 0);
1473 rte_vhost_enable_guest_notification(vid, VIRTIO_TXQ, 0);
1475 RTE_LOG(INFO, VHOST_DATA,
1476 "(%d) device has been added to data core %d\n",
1479 if (async_vhost_driver) {
1480 struct rte_vhost_async_config config = {0};
1481 struct rte_vhost_async_channel_ops channel_ops;
1483 if (dma_type != NULL && strncmp(dma_type, "ioat", 4) == 0) {
1484 channel_ops.transfer_data = ioat_transfer_data_cb;
1485 channel_ops.check_completed_copies =
1486 ioat_check_completed_copies_cb;
1488 config.features = RTE_VHOST_ASYNC_INORDER;
1489 config.async_threshold = 256;
1491 return rte_vhost_async_channel_register(vid, VIRTIO_RXQ,
1492 config, &channel_ops);
1500 vring_state_changed(int vid, uint16_t queue_id, int enable)
1502 struct vhost_dev *vdev = NULL;
1504 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1505 if (vdev->vid == vid)
1511 if (queue_id != VIRTIO_RXQ)
1514 if (async_vhost_driver) {
1517 struct rte_mbuf *m_cpl[vdev->pkts_inflight];
1519 while (vdev->pkts_inflight) {
1520 n_pkt = rte_vhost_clear_queue_thread_unsafe(vid, queue_id,
1521 m_cpl, vdev->pkts_inflight);
1522 free_pkts(m_cpl, n_pkt);
1523 __atomic_sub_fetch(&vdev->pkts_inflight, n_pkt, __ATOMIC_SEQ_CST);
1532 * These callback allow devices to be added to the data core when configuration
1533 * has been fully complete.
1535 static const struct vhost_device_ops virtio_net_device_ops =
1537 .new_device = new_device,
1538 .destroy_device = destroy_device,
1539 .vring_state_changed = vring_state_changed,
1543 * This is a thread will wake up after a period to print stats if the user has
1547 print_stats(__rte_unused void *arg)
1549 struct vhost_dev *vdev;
1550 uint64_t tx_dropped, rx_dropped;
1551 uint64_t tx, tx_total, rx, rx_total;
1552 const char clr[] = { 27, '[', '2', 'J', '\0' };
1553 const char top_left[] = { 27, '[', '1', ';', '1', 'H','\0' };
1556 sleep(enable_stats);
1558 /* Clear screen and move to top left */
1559 printf("%s%s\n", clr, top_left);
1560 printf("Device statistics =================================\n");
1562 TAILQ_FOREACH(vdev, &vhost_dev_list, global_vdev_entry) {
1563 tx_total = vdev->stats.tx_total;
1564 tx = vdev->stats.tx;
1565 tx_dropped = tx_total - tx;
1567 rx_total = __atomic_load_n(&vdev->stats.rx_total_atomic,
1569 rx = __atomic_load_n(&vdev->stats.rx_atomic,
1571 rx_dropped = rx_total - rx;
1573 printf("Statistics for device %d\n"
1574 "-----------------------\n"
1575 "TX total: %" PRIu64 "\n"
1576 "TX dropped: %" PRIu64 "\n"
1577 "TX successful: %" PRIu64 "\n"
1578 "RX total: %" PRIu64 "\n"
1579 "RX dropped: %" PRIu64 "\n"
1580 "RX successful: %" PRIu64 "\n",
1582 tx_total, tx_dropped, tx,
1583 rx_total, rx_dropped, rx);
1586 printf("===================================================\n");
1595 unregister_drivers(int socket_num)
1599 for (i = 0; i < socket_num; i++) {
1600 ret = rte_vhost_driver_unregister(socket_files + i * PATH_MAX);
1602 RTE_LOG(ERR, VHOST_CONFIG,
1603 "Fail to unregister vhost driver for %s.\n",
1604 socket_files + i * PATH_MAX);
1608 /* When we receive a INT signal, unregister vhost driver */
1610 sigint_handler(__rte_unused int signum)
1612 /* Unregister vhost driver. */
1613 unregister_drivers(nb_sockets);
1619 * While creating an mbuf pool, one key thing is to figure out how
1620 * many mbuf entries is enough for our use. FYI, here are some
1623 * - Each rx queue would reserve @nr_rx_desc mbufs at queue setup stage
1625 * - For each switch core (A CPU core does the packet switch), we need
1626 * also make some reservation for receiving the packets from virtio
1627 * Tx queue. How many is enough depends on the usage. It's normally
1628 * a simple calculation like following:
1630 * MAX_PKT_BURST * max packet size / mbuf size
1632 * So, we definitely need allocate more mbufs when TSO is enabled.
1634 * - Similarly, for each switching core, we should serve @nr_rx_desc
1635 * mbufs for receiving the packets from physical NIC device.
1637 * - We also need make sure, for each switch core, we have allocated
1638 * enough mbufs to fill up the mbuf cache.
1641 create_mbuf_pool(uint16_t nr_port, uint32_t nr_switch_core, uint32_t mbuf_size,
1642 uint32_t nr_queues, uint32_t nr_rx_desc, uint32_t nr_mbuf_cache)
1645 uint32_t nr_mbufs_per_core;
1646 uint32_t mtu = 1500;
1653 nr_mbufs_per_core = (mtu + mbuf_size) * MAX_PKT_BURST /
1654 (mbuf_size - RTE_PKTMBUF_HEADROOM);
1655 nr_mbufs_per_core += nr_rx_desc;
1656 nr_mbufs_per_core = RTE_MAX(nr_mbufs_per_core, nr_mbuf_cache);
1658 nr_mbufs = nr_queues * nr_rx_desc;
1659 nr_mbufs += nr_mbufs_per_core * nr_switch_core;
1660 nr_mbufs *= nr_port;
1662 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", nr_mbufs,
1663 nr_mbuf_cache, 0, mbuf_size,
1665 if (mbuf_pool == NULL)
1666 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
1670 * Main function, does initialisation and calls the per-lcore functions.
1673 main(int argc, char *argv[])
1675 unsigned lcore_id, core_id = 0;
1676 unsigned nb_ports, valid_num_ports;
1679 static pthread_t tid;
1680 uint64_t flags = RTE_VHOST_USER_NET_COMPLIANT_OL_FLAGS;
1682 signal(SIGINT, sigint_handler);
1685 ret = rte_eal_init(argc, argv);
1687 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
1691 /* parse app arguments */
1692 ret = us_vhost_parse_args(argc, argv);
1694 rte_exit(EXIT_FAILURE, "Invalid argument\n");
1696 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
1697 TAILQ_INIT(&lcore_info[lcore_id].vdev_list);
1699 if (rte_lcore_is_enabled(lcore_id))
1700 lcore_ids[core_id++] = lcore_id;
1703 if (rte_lcore_count() > RTE_MAX_LCORE)
1704 rte_exit(EXIT_FAILURE,"Not enough cores\n");
1706 /* Get the number of physical ports. */
1707 nb_ports = rte_eth_dev_count_avail();
1710 * Update the global var NUM_PORTS and global array PORTS
1711 * and get value of var VALID_NUM_PORTS according to system ports number
1713 valid_num_ports = check_ports_num(nb_ports);
1715 if ((valid_num_ports == 0) || (valid_num_ports > MAX_SUP_PORTS)) {
1716 RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u,"
1717 "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS);
1722 * FIXME: here we are trying to allocate mbufs big enough for
1723 * @MAX_QUEUES, but the truth is we're never going to use that
1724 * many queues here. We probably should only do allocation for
1725 * those queues we are going to use.
1727 create_mbuf_pool(valid_num_ports, rte_lcore_count() - 1, MBUF_DATA_SIZE,
1728 MAX_QUEUES, RTE_TEST_RX_DESC_DEFAULT, MBUF_CACHE_SIZE);
1730 if (vm2vm_mode == VM2VM_HARDWARE) {
1731 /* Enable VT loop back to let L2 switch to do it. */
1732 vmdq_conf_default.rx_adv_conf.vmdq_rx_conf.enable_loop_back = 1;
1733 RTE_LOG(DEBUG, VHOST_CONFIG,
1734 "Enable loop back for L2 switch in vmdq.\n");
1737 /* initialize all ports */
1738 RTE_ETH_FOREACH_DEV(portid) {
1739 /* skip ports that are not enabled */
1740 if ((enabled_port_mask & (1 << portid)) == 0) {
1741 RTE_LOG(INFO, VHOST_PORT,
1742 "Skipping disabled port %d\n", portid);
1745 if (port_init(portid) != 0)
1746 rte_exit(EXIT_FAILURE,
1747 "Cannot initialize network ports\n");
1750 /* Enable stats if the user option is set. */
1752 ret = rte_ctrl_thread_create(&tid, "print-stats", NULL,
1755 rte_exit(EXIT_FAILURE,
1756 "Cannot create print-stats thread\n");
1759 /* Launch all data cores. */
1760 RTE_LCORE_FOREACH_WORKER(lcore_id)
1761 rte_eal_remote_launch(switch_worker, NULL, lcore_id);
1764 flags |= RTE_VHOST_USER_CLIENT;
1766 /* Register vhost user driver to handle vhost messages. */
1767 for (i = 0; i < nb_sockets; i++) {
1768 char *file = socket_files + i * PATH_MAX;
1770 if (async_vhost_driver)
1771 flags = flags | RTE_VHOST_USER_ASYNC_COPY;
1773 ret = rte_vhost_driver_register(file, flags);
1775 unregister_drivers(i);
1776 rte_exit(EXIT_FAILURE,
1777 "vhost driver register failure.\n");
1780 if (builtin_net_driver)
1781 rte_vhost_driver_set_features(file, VIRTIO_NET_FEATURES);
1783 if (mergeable == 0) {
1784 rte_vhost_driver_disable_features(file,
1785 1ULL << VIRTIO_NET_F_MRG_RXBUF);
1788 if (enable_tx_csum == 0) {
1789 rte_vhost_driver_disable_features(file,
1790 1ULL << VIRTIO_NET_F_CSUM);
1793 if (enable_tso == 0) {
1794 rte_vhost_driver_disable_features(file,
1795 1ULL << VIRTIO_NET_F_HOST_TSO4);
1796 rte_vhost_driver_disable_features(file,
1797 1ULL << VIRTIO_NET_F_HOST_TSO6);
1798 rte_vhost_driver_disable_features(file,
1799 1ULL << VIRTIO_NET_F_GUEST_TSO4);
1800 rte_vhost_driver_disable_features(file,
1801 1ULL << VIRTIO_NET_F_GUEST_TSO6);
1805 rte_vhost_driver_enable_features(file,
1806 1ULL << VIRTIO_NET_F_CTRL_RX);
1809 ret = rte_vhost_driver_callback_register(file,
1810 &virtio_net_device_ops);
1812 rte_exit(EXIT_FAILURE,
1813 "failed to register vhost driver callbacks.\n");
1816 if (rte_vhost_driver_start(file) < 0) {
1817 rte_exit(EXIT_FAILURE,
1818 "failed to start vhost driver.\n");
1822 RTE_LCORE_FOREACH_WORKER(lcore_id)
1823 rte_eal_wait_lcore(lcore_id);
1825 /* clean up the EAL */