1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
10 #include <sys/queue.h>
15 #include <netinet/in.h>
17 #include <linux/if_tun.h>
19 #include <sys/ioctl.h>
23 #include <rte_common.h>
25 #include <rte_memory.h>
26 #include <rte_memcpy.h>
28 #include <rte_per_lcore.h>
29 #include <rte_launch.h>
30 #include <rte_atomic.h>
31 #include <rte_lcore.h>
32 #include <rte_branch_prediction.h>
33 #include <rte_interrupts.h>
34 #include <rte_bus_pci.h>
35 #include <rte_debug.h>
36 #include <rte_ether.h>
37 #include <rte_ethdev.h>
38 #include <rte_mempool.h>
40 #include <rte_string_fns.h>
41 #include <rte_cycles.h>
42 #include <rte_malloc.h>
45 /* Macros for printing using RTE_LOG */
46 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
48 /* Max size of a single packet */
49 #define MAX_PACKET_SZ 2048
51 /* Size of the data buffer in each mbuf */
52 #define MBUF_DATA_SZ (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM)
54 /* Number of mbufs in mempool that is created */
55 #define NB_MBUF (8192 * 16)
57 /* How many packets to attempt to read from NIC in one go */
58 #define PKT_BURST_SZ 32
60 /* How many objects (mbufs) to keep in per-lcore mempool cache */
61 #define MEMPOOL_CACHE_SZ PKT_BURST_SZ
63 /* Number of RX ring descriptors */
66 /* Number of TX ring descriptors */
69 /* Total octets in ethernet header */
70 #define KNI_ENET_HEADER_SIZE 14
72 /* Total octets in the FCS */
73 #define KNI_ENET_FCS_SIZE 4
75 #define KNI_US_PER_SECOND 1000000
76 #define KNI_SECOND_PER_DAY 86400
78 #define KNI_MAX_KTHREAD 32
80 * Structure of port parameters
82 struct kni_port_params {
83 uint16_t port_id;/* Port ID */
84 unsigned lcore_rx; /* lcore ID for RX */
85 unsigned lcore_tx; /* lcore ID for TX */
86 uint32_t nb_lcore_k; /* Number of lcores for KNI multi kernel threads */
87 uint32_t nb_kni; /* Number of KNI devices to be created */
88 unsigned lcore_k[KNI_MAX_KTHREAD]; /* lcore ID list for kthreads */
89 struct rte_kni *kni[KNI_MAX_KTHREAD]; /* KNI context pointers */
90 } __rte_cache_aligned;
92 static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS];
95 /* Options for configuring ethernet port */
96 static struct rte_eth_conf port_conf = {
98 .ignore_offload_bitfield = 1,
99 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
102 .mq_mode = ETH_MQ_TX_NONE,
106 /* Mempool for mbufs */
107 static struct rte_mempool * pktmbuf_pool = NULL;
109 /* Mask of enabled ports */
110 static uint32_t ports_mask = 0;
111 /* Ports set in promiscuous mode off by default. */
112 static int promiscuous_on = 0;
114 /* Structure type for recording kni interface specific stats */
115 struct kni_interface_stats {
116 /* number of pkts received from NIC, and sent to KNI */
119 /* number of pkts received from NIC, but failed to send to KNI */
122 /* number of pkts received from KNI, and sent to NIC */
125 /* number of pkts received from KNI, but failed to send to NIC */
129 /* kni device statistics array */
130 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
132 static int kni_change_mtu(uint16_t port_id, unsigned int new_mtu);
133 static int kni_config_network_interface(uint16_t port_id, uint8_t if_up);
135 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
137 /* Print out statistics on packets handled */
143 printf("\n**KNI example application statistics**\n"
144 "====== ============== ============ ============ ============ ============\n"
145 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
146 "------ -------------- ------------ ------------ ------------ ------------\n");
147 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
148 if (!kni_port_params_array[i])
151 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
153 kni_port_params_array[i]->lcore_rx,
154 kni_port_params_array[i]->lcore_tx,
155 kni_stats[i].rx_packets,
156 kni_stats[i].rx_dropped,
157 kni_stats[i].tx_packets,
158 kni_stats[i].tx_dropped);
160 printf("====== ============== ============ ============ ============ ============\n");
163 /* Custom handling of signals to handle stats and kni processing */
165 signal_handler(int signum)
167 /* When we receive a USR1 signal, print stats */
168 if (signum == SIGUSR1) {
172 /* When we receive a USR2 signal, reset stats */
173 if (signum == SIGUSR2) {
174 memset(&kni_stats, 0, sizeof(kni_stats));
175 printf("\n**Statistics have been reset**\n");
179 /* When we receive a RTMIN or SIGINT signal, stop kni processing */
180 if (signum == SIGRTMIN || signum == SIGINT){
181 printf("SIGRTMIN is received, and the KNI processing is "
183 rte_atomic32_inc(&kni_stop);
189 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
196 for (i = 0; i < num; i++) {
197 rte_pktmbuf_free(pkts[i]);
203 * Interface to burst rx and enqueue mbufs into rx_q
206 kni_ingress(struct kni_port_params *p)
212 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
218 port_id = p->port_id;
219 for (i = 0; i < nb_kni; i++) {
220 /* Burst rx from eth */
221 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
222 if (unlikely(nb_rx > PKT_BURST_SZ)) {
223 RTE_LOG(ERR, APP, "Error receiving from eth\n");
226 /* Burst tx to kni */
227 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
228 kni_stats[port_id].rx_packets += num;
230 rte_kni_handle_request(p->kni[i]);
231 if (unlikely(num < nb_rx)) {
232 /* Free mbufs not tx to kni interface */
233 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
234 kni_stats[port_id].rx_dropped += nb_rx - num;
240 * Interface to dequeue mbufs from tx_q and burst tx
243 kni_egress(struct kni_port_params *p)
249 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
255 port_id = p->port_id;
256 for (i = 0; i < nb_kni; i++) {
257 /* Burst rx from kni */
258 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
259 if (unlikely(num > PKT_BURST_SZ)) {
260 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
263 /* Burst tx to eth */
264 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
265 kni_stats[port_id].tx_packets += nb_tx;
266 if (unlikely(nb_tx < num)) {
267 /* Free mbufs not tx to NIC */
268 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
269 kni_stats[port_id].tx_dropped += num - nb_tx;
275 main_loop(__rte_unused void *arg)
277 uint8_t i, nb_ports = rte_eth_dev_count();
279 const unsigned lcore_id = rte_lcore_id();
286 enum lcore_rxtx flag = LCORE_NONE;
288 for (i = 0; i < nb_ports; i++) {
289 if (!kni_port_params_array[i])
291 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
294 } else if (kni_port_params_array[i]->lcore_tx ==
301 if (flag == LCORE_RX) {
302 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
303 kni_port_params_array[i]->lcore_rx,
304 kni_port_params_array[i]->port_id);
306 f_stop = rte_atomic32_read(&kni_stop);
309 kni_ingress(kni_port_params_array[i]);
311 } else if (flag == LCORE_TX) {
312 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
313 kni_port_params_array[i]->lcore_tx,
314 kni_port_params_array[i]->port_id);
316 f_stop = rte_atomic32_read(&kni_stop);
319 kni_egress(kni_port_params_array[i]);
322 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
327 /* Display usage instructions */
329 print_usage(const char *prgname)
331 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
332 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
333 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
334 " -p PORTMASK: hex bitmask of ports to use\n"
335 " -P : enable promiscuous mode\n"
336 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
337 "port and lcore configurations\n",
341 /* Convert string to unsigned number. 0 is returned if error occurs */
343 parse_unsigned(const char *portmask)
348 num = strtoul(portmask, &end, 16);
349 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
352 return (uint32_t)num;
359 struct kni_port_params **p = kni_port_params_array;
361 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
364 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
365 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
366 p[i]->lcore_rx, p[i]->lcore_tx);
367 for (j = 0; j < p[i]->nb_lcore_k; j++)
368 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
374 parse_config(const char *arg)
376 const char *p, *p0 = arg;
383 _NUM_FLD = KNI_MAX_KTHREAD + 3,
386 char *str_fld[_NUM_FLD];
387 unsigned long int_fld[_NUM_FLD];
388 uint16_t port_id, nb_kni_port_params = 0;
390 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
391 while (((p = strchr(p0, '(')) != NULL) &&
392 nb_kni_port_params < RTE_MAX_ETHPORTS) {
394 if ((p0 = strchr(p, ')')) == NULL)
397 if (size >= sizeof(s)) {
398 printf("Invalid config parameters\n");
401 snprintf(s, sizeof(s), "%.*s", size, p);
402 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
403 if (nb_token <= FLD_LCORE_TX) {
404 printf("Invalid config parameters\n");
407 for (i = 0; i < nb_token; i++) {
409 int_fld[i] = strtoul(str_fld[i], &end, 0);
410 if (errno != 0 || end == str_fld[i]) {
411 printf("Invalid config parameters\n");
417 port_id = int_fld[i++];
418 if (port_id >= RTE_MAX_ETHPORTS) {
419 printf("Port ID %d could not exceed the maximum %d\n",
420 port_id, RTE_MAX_ETHPORTS);
423 if (kni_port_params_array[port_id]) {
424 printf("Port %d has been configured\n", port_id);
427 kni_port_params_array[port_id] =
428 rte_zmalloc("KNI_port_params",
429 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
430 kni_port_params_array[port_id]->port_id = port_id;
431 kni_port_params_array[port_id]->lcore_rx =
432 (uint8_t)int_fld[i++];
433 kni_port_params_array[port_id]->lcore_tx =
434 (uint8_t)int_fld[i++];
435 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
436 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
437 printf("lcore_rx %u or lcore_tx %u ID could not "
438 "exceed the maximum %u\n",
439 kni_port_params_array[port_id]->lcore_rx,
440 kni_port_params_array[port_id]->lcore_tx,
441 (unsigned)RTE_MAX_LCORE);
444 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
445 kni_port_params_array[port_id]->lcore_k[j] =
447 kni_port_params_array[port_id]->nb_lcore_k = j;
454 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
455 if (kni_port_params_array[i]) {
456 rte_free(kni_port_params_array[i]);
457 kni_port_params_array[i] = NULL;
465 validate_parameters(uint32_t portmask)
470 printf("No port configured in port mask\n");
474 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
475 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
476 (!(portmask & (1 << i)) && kni_port_params_array[i]))
477 rte_exit(EXIT_FAILURE, "portmask is not consistent "
478 "to port ids specified in --config\n");
480 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
481 (unsigned)(kni_port_params_array[i]->lcore_rx)))
482 rte_exit(EXIT_FAILURE, "lcore id %u for "
483 "port %d receiving not enabled\n",
484 kni_port_params_array[i]->lcore_rx,
485 kni_port_params_array[i]->port_id);
487 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
488 (unsigned)(kni_port_params_array[i]->lcore_tx)))
489 rte_exit(EXIT_FAILURE, "lcore id %u for "
490 "port %d transmitting not enabled\n",
491 kni_port_params_array[i]->lcore_tx,
492 kni_port_params_array[i]->port_id);
499 #define CMDLINE_OPT_CONFIG "config"
501 /* Parse the arguments given in the command line of the application */
503 parse_args(int argc, char **argv)
505 int opt, longindex, ret = 0;
506 const char *prgname = argv[0];
507 static struct option longopts[] = {
508 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
512 /* Disable printing messages within getopt() */
515 /* Parse command line */
516 while ((opt = getopt_long(argc, argv, "p:P", longopts,
517 &longindex)) != EOF) {
520 ports_mask = parse_unsigned(optarg);
526 if (!strncmp(longopts[longindex].name,
528 sizeof(CMDLINE_OPT_CONFIG))) {
529 ret = parse_config(optarg);
531 printf("Invalid config\n");
532 print_usage(prgname);
538 print_usage(prgname);
539 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
543 /* Check that options were parsed ok */
544 if (validate_parameters(ports_mask) < 0) {
545 print_usage(prgname);
546 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
552 /* Initialize KNI subsystem */
556 unsigned int num_of_kni_ports = 0, i;
557 struct kni_port_params **params = kni_port_params_array;
559 /* Calculate the maximum number of KNI interfaces that will be used */
560 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
561 if (kni_port_params_array[i]) {
562 num_of_kni_ports += (params[i]->nb_lcore_k ?
563 params[i]->nb_lcore_k : 1);
567 /* Invoke rte KNI init to preallocate the ports */
568 rte_kni_init(num_of_kni_ports);
571 /* Initialise a single port on an Ethernet device */
573 init_port(uint16_t port)
576 uint16_t nb_rxd = NB_RXD;
577 uint16_t nb_txd = NB_TXD;
578 struct rte_eth_dev_info dev_info;
579 struct rte_eth_rxconf rxq_conf;
580 struct rte_eth_txconf txq_conf;
581 struct rte_eth_conf local_port_conf = port_conf;
583 /* Initialise device and RX/TX queues */
584 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
586 rte_eth_dev_info_get(port, &dev_info);
587 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
588 local_port_conf.txmode.offloads |=
589 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
590 ret = rte_eth_dev_configure(port, 1, 1, &local_port_conf);
592 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
593 (unsigned)port, ret);
595 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
597 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
598 "for port%u (%d)\n", (unsigned)port, ret);
600 rxq_conf = dev_info.default_rxconf;
601 rxq_conf.offloads = local_port_conf.rxmode.offloads;
602 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
603 rte_eth_dev_socket_id(port), &rxq_conf, pktmbuf_pool);
605 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
606 "port%u (%d)\n", (unsigned)port, ret);
608 txq_conf = dev_info.default_txconf;
609 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
610 txq_conf.offloads = local_port_conf.txmode.offloads;
611 ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
612 rte_eth_dev_socket_id(port), &txq_conf);
614 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
615 "port%u (%d)\n", (unsigned)port, ret);
617 ret = rte_eth_dev_start(port);
619 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
620 (unsigned)port, ret);
623 rte_eth_promiscuous_enable(port);
626 /* Check the link status of all ports in up to 9s, and print them finally */
628 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
630 #define CHECK_INTERVAL 100 /* 100ms */
631 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
633 uint8_t count, all_ports_up, print_flag = 0;
634 struct rte_eth_link link;
636 printf("\nChecking link status\n");
638 for (count = 0; count <= MAX_CHECK_TIME; count++) {
640 for (portid = 0; portid < port_num; portid++) {
641 if ((port_mask & (1 << portid)) == 0)
643 memset(&link, 0, sizeof(link));
644 rte_eth_link_get_nowait(portid, &link);
645 /* print link status if flag set */
646 if (print_flag == 1) {
647 if (link.link_status)
649 "Port%d Link Up - speed %uMbps - %s\n",
650 portid, link.link_speed,
651 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
652 ("full-duplex") : ("half-duplex\n"));
654 printf("Port %d Link Down\n", portid);
657 /* clear all_ports_up flag if any link down */
658 if (link.link_status == ETH_LINK_DOWN) {
663 /* after finally printing all link status, get out */
667 if (all_ports_up == 0) {
670 rte_delay_ms(CHECK_INTERVAL);
673 /* set the print_flag if all ports up or timeout */
674 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
681 /* Callback for request of changing MTU */
683 kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
686 uint16_t nb_rxd = NB_RXD;
687 struct rte_eth_conf conf;
688 struct rte_eth_dev_info dev_info;
689 struct rte_eth_rxconf rxq_conf;
691 if (port_id >= rte_eth_dev_count()) {
692 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
696 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
698 /* Stop specific port */
699 rte_eth_dev_stop(port_id);
701 memcpy(&conf, &port_conf, sizeof(conf));
703 if (new_mtu > ETHER_MAX_LEN)
704 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
706 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
708 /* mtu + length of header + length of FCS = max pkt length */
709 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
711 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
713 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
717 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, NULL);
719 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
720 "for port%u (%d)\n", (unsigned int)port_id,
723 rte_eth_dev_info_get(port_id, &dev_info);
724 rxq_conf = dev_info.default_rxconf;
725 rxq_conf.offloads = conf.rxmode.offloads;
726 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
727 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool);
729 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n",
734 /* Restart specific port */
735 ret = rte_eth_dev_start(port_id);
737 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
744 /* Callback for request of configuring network interface up/down */
746 kni_config_network_interface(uint16_t port_id, uint8_t if_up)
750 if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) {
751 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
755 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
756 port_id, if_up ? "up" : "down");
758 if (if_up != 0) { /* Configure network interface up */
759 rte_eth_dev_stop(port_id);
760 ret = rte_eth_dev_start(port_id);
761 } else /* Configure network interface down */
762 rte_eth_dev_stop(port_id);
765 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
771 kni_alloc(uint16_t port_id)
775 struct rte_kni_conf conf;
776 struct kni_port_params **params = kni_port_params_array;
778 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
781 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
782 params[port_id]->nb_lcore_k : 1;
784 for (i = 0; i < params[port_id]->nb_kni; i++) {
785 /* Clear conf at first */
786 memset(&conf, 0, sizeof(conf));
787 if (params[port_id]->nb_lcore_k) {
788 snprintf(conf.name, RTE_KNI_NAMESIZE,
789 "vEth%u_%u", port_id, i);
790 conf.core_id = params[port_id]->lcore_k[i];
793 snprintf(conf.name, RTE_KNI_NAMESIZE,
795 conf.group_id = port_id;
796 conf.mbuf_size = MAX_PACKET_SZ;
798 * The first KNI device associated to a port
799 * is the master, for multiple kernel thread
803 struct rte_kni_ops ops;
804 struct rte_eth_dev_info dev_info;
806 memset(&dev_info, 0, sizeof(dev_info));
807 rte_eth_dev_info_get(port_id, &dev_info);
809 if (dev_info.pci_dev) {
810 conf.addr = dev_info.pci_dev->addr;
811 conf.id = dev_info.pci_dev->id;
814 memset(&ops, 0, sizeof(ops));
815 ops.port_id = port_id;
816 ops.change_mtu = kni_change_mtu;
817 ops.config_network_if = kni_config_network_interface;
819 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
821 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
824 rte_exit(EXIT_FAILURE, "Fail to create kni for "
825 "port: %d\n", port_id);
826 params[port_id]->kni[i] = kni;
833 kni_free_kni(uint16_t port_id)
836 struct kni_port_params **p = kni_port_params_array;
838 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
841 for (i = 0; i < p[port_id]->nb_kni; i++) {
842 if (rte_kni_release(p[port_id]->kni[i]))
843 printf("Fail to release kni\n");
844 p[port_id]->kni[i] = NULL;
846 rte_eth_dev_stop(port_id);
851 /* Initialise ports/queues etc. and start main loop on each core */
853 main(int argc, char** argv)
856 uint16_t nb_sys_ports, port;
859 /* Associate signal_hanlder function with USR signals */
860 signal(SIGUSR1, signal_handler);
861 signal(SIGUSR2, signal_handler);
862 signal(SIGRTMIN, signal_handler);
863 signal(SIGINT, signal_handler);
866 ret = rte_eal_init(argc, argv);
868 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
872 /* Parse application arguments (after the EAL ones) */
873 ret = parse_args(argc, argv);
875 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
877 /* Create the mbuf pool */
878 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
879 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
880 if (pktmbuf_pool == NULL) {
881 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
885 /* Get number of ports found in scan */
886 nb_sys_ports = rte_eth_dev_count();
887 if (nb_sys_ports == 0)
888 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
890 /* Check if the configured port ID is valid */
891 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
892 if (kni_port_params_array[i] && i >= nb_sys_ports)
893 rte_exit(EXIT_FAILURE, "Configured invalid "
896 /* Initialize KNI subsystem */
899 /* Initialise each port */
900 for (port = 0; port < nb_sys_ports; port++) {
901 /* Skip ports that are not enabled */
902 if (!(ports_mask & (1 << port)))
906 if (port >= RTE_MAX_ETHPORTS)
907 rte_exit(EXIT_FAILURE, "Can not use more than "
908 "%d ports for kni\n", RTE_MAX_ETHPORTS);
912 check_all_ports_link_status(nb_sys_ports, ports_mask);
914 /* Launch per-lcore function on every lcore */
915 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
916 RTE_LCORE_FOREACH_SLAVE(i) {
917 if (rte_eal_wait_lcore(i) < 0)
921 /* Release resources */
922 for (port = 0; port < nb_sys_ports; port++) {
923 if (!(ports_mask & (1 << port)))
927 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
928 if (kni_port_params_array[i]) {
929 rte_free(kni_port_params_array[i]);
930 kni_port_params_array[i] = NULL;