4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer in
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <sys/queue.h>
44 #include <netinet/in.h>
46 #include <linux/if_tun.h>
48 #include <sys/ioctl.h>
52 #include <rte_common.h>
54 #include <rte_memory.h>
55 #include <rte_memcpy.h>
56 #include <rte_memzone.h>
58 #include <rte_per_lcore.h>
59 #include <rte_launch.h>
60 #include <rte_atomic.h>
61 #include <rte_lcore.h>
62 #include <rte_branch_prediction.h>
63 #include <rte_interrupts.h>
65 #include <rte_debug.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
70 #include <rte_mempool.h>
72 #include <rte_string_fns.h>
73 #include <rte_cycles.h>
74 #include <rte_malloc.h>
77 /* Macros for printing using RTE_LOG */
78 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
80 /* Max size of a single packet */
81 #define MAX_PACKET_SZ 2048
83 /* Size of the data buffer in each mbuf */
84 #define MBUF_DATA_SZ (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM)
86 /* Number of mbufs in mempool that is created */
87 #define NB_MBUF (8192 * 16)
89 /* How many packets to attempt to read from NIC in one go */
90 #define PKT_BURST_SZ 32
92 /* How many objects (mbufs) to keep in per-lcore mempool cache */
93 #define MEMPOOL_CACHE_SZ PKT_BURST_SZ
95 /* Number of RX ring descriptors */
98 /* Number of TX ring descriptors */
101 /* Total octets in ethernet header */
102 #define KNI_ENET_HEADER_SIZE 14
104 /* Total octets in the FCS */
105 #define KNI_ENET_FCS_SIZE 4
107 #define KNI_US_PER_SECOND 1000000
108 #define KNI_SECOND_PER_DAY 86400
110 #define KNI_MAX_KTHREAD 32
112 * Structure of port parameters
114 struct kni_port_params {
115 uint8_t port_id;/* Port ID */
116 unsigned lcore_rx; /* lcore ID for RX */
117 unsigned lcore_tx; /* lcore ID for TX */
118 uint32_t nb_lcore_k; /* Number of lcores for KNI multi kernel threads */
119 uint32_t nb_kni; /* Number of KNI devices to be created */
120 unsigned lcore_k[KNI_MAX_KTHREAD]; /* lcore ID list for kthreads */
121 struct rte_kni *kni[KNI_MAX_KTHREAD]; /* KNI context pointers */
122 } __rte_cache_aligned;
124 static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS];
127 /* Options for configuring ethernet port */
128 static struct rte_eth_conf port_conf = {
130 .header_split = 0, /* Header Split disabled */
131 .hw_ip_checksum = 0, /* IP checksum offload disabled */
132 .hw_vlan_filter = 0, /* VLAN filtering disabled */
133 .jumbo_frame = 0, /* Jumbo Frame Support disabled */
134 .hw_strip_crc = 0, /* CRC stripped by hardware */
137 .mq_mode = ETH_MQ_TX_NONE,
141 /* Mempool for mbufs */
142 static struct rte_mempool * pktmbuf_pool = NULL;
144 /* Mask of enabled ports */
145 static uint32_t ports_mask = 0;
146 /* Ports set in promiscuous mode off by default. */
147 static int promiscuous_on = 0;
149 /* Structure type for recording kni interface specific stats */
150 struct kni_interface_stats {
151 /* number of pkts received from NIC, and sent to KNI */
154 /* number of pkts received from NIC, but failed to send to KNI */
157 /* number of pkts received from KNI, and sent to NIC */
160 /* number of pkts received from KNI, but failed to send to NIC */
164 /* kni device statistics array */
165 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
167 static int kni_change_mtu(uint8_t port_id, unsigned new_mtu);
168 static int kni_config_network_interface(uint8_t port_id, uint8_t if_up);
170 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
172 /* Print out statistics on packets handled */
178 printf("\n**KNI example application statistics**\n"
179 "====== ============== ============ ============ ============ ============\n"
180 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
181 "------ -------------- ------------ ------------ ------------ ------------\n");
182 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
183 if (!kni_port_params_array[i])
186 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
188 kni_port_params_array[i]->lcore_rx,
189 kni_port_params_array[i]->lcore_tx,
190 kni_stats[i].rx_packets,
191 kni_stats[i].rx_dropped,
192 kni_stats[i].tx_packets,
193 kni_stats[i].tx_dropped);
195 printf("====== ============== ============ ============ ============ ============\n");
198 /* Custom handling of signals to handle stats and kni processing */
200 signal_handler(int signum)
202 /* When we receive a USR1 signal, print stats */
203 if (signum == SIGUSR1) {
207 /* When we receive a USR2 signal, reset stats */
208 if (signum == SIGUSR2) {
209 memset(&kni_stats, 0, sizeof(kni_stats));
210 printf("\n**Statistics have been reset**\n");
214 /* When we receive a RTMIN or SIGINT signal, stop kni processing */
215 if (signum == SIGRTMIN || signum == SIGINT){
216 printf("SIGRTMIN is received, and the KNI processing is "
218 rte_atomic32_inc(&kni_stop);
224 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
231 for (i = 0; i < num; i++) {
232 rte_pktmbuf_free(pkts[i]);
238 * Interface to burst rx and enqueue mbufs into rx_q
241 kni_ingress(struct kni_port_params *p)
246 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
252 port_id = p->port_id;
253 for (i = 0; i < nb_kni; i++) {
254 /* Burst rx from eth */
255 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
256 if (unlikely(nb_rx > PKT_BURST_SZ)) {
257 RTE_LOG(ERR, APP, "Error receiving from eth\n");
260 /* Burst tx to kni */
261 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
262 kni_stats[port_id].rx_packets += num;
264 rte_kni_handle_request(p->kni[i]);
265 if (unlikely(num < nb_rx)) {
266 /* Free mbufs not tx to kni interface */
267 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
268 kni_stats[port_id].rx_dropped += nb_rx - num;
274 * Interface to dequeue mbufs from tx_q and burst tx
277 kni_egress(struct kni_port_params *p)
282 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
288 port_id = p->port_id;
289 for (i = 0; i < nb_kni; i++) {
290 /* Burst rx from kni */
291 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
292 if (unlikely(num > PKT_BURST_SZ)) {
293 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
296 /* Burst tx to eth */
297 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
298 kni_stats[port_id].tx_packets += nb_tx;
299 if (unlikely(nb_tx < num)) {
300 /* Free mbufs not tx to NIC */
301 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
302 kni_stats[port_id].tx_dropped += num - nb_tx;
308 main_loop(__rte_unused void *arg)
310 uint8_t i, nb_ports = rte_eth_dev_count();
312 const unsigned lcore_id = rte_lcore_id();
319 enum lcore_rxtx flag = LCORE_NONE;
321 for (i = 0; i < nb_ports; i++) {
322 if (!kni_port_params_array[i])
324 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
327 } else if (kni_port_params_array[i]->lcore_tx ==
334 if (flag == LCORE_RX) {
335 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
336 kni_port_params_array[i]->lcore_rx,
337 kni_port_params_array[i]->port_id);
339 f_stop = rte_atomic32_read(&kni_stop);
342 kni_ingress(kni_port_params_array[i]);
344 } else if (flag == LCORE_TX) {
345 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
346 kni_port_params_array[i]->lcore_tx,
347 kni_port_params_array[i]->port_id);
349 f_stop = rte_atomic32_read(&kni_stop);
352 kni_egress(kni_port_params_array[i]);
355 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
360 /* Display usage instructions */
362 print_usage(const char *prgname)
364 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
365 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
366 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
367 " -p PORTMASK: hex bitmask of ports to use\n"
368 " -P : enable promiscuous mode\n"
369 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
370 "port and lcore configurations\n",
374 /* Convert string to unsigned number. 0 is returned if error occurs */
376 parse_unsigned(const char *portmask)
381 num = strtoul(portmask, &end, 16);
382 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
385 return (uint32_t)num;
392 struct kni_port_params **p = kni_port_params_array;
394 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
397 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
398 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
399 p[i]->lcore_rx, p[i]->lcore_tx);
400 for (j = 0; j < p[i]->nb_lcore_k; j++)
401 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
407 parse_config(const char *arg)
409 const char *p, *p0 = arg;
416 _NUM_FLD = KNI_MAX_KTHREAD + 3,
419 char *str_fld[_NUM_FLD];
420 unsigned long int_fld[_NUM_FLD];
421 uint8_t port_id, nb_kni_port_params = 0;
423 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
424 while (((p = strchr(p0, '(')) != NULL) &&
425 nb_kni_port_params < RTE_MAX_ETHPORTS) {
427 if ((p0 = strchr(p, ')')) == NULL)
430 if (size >= sizeof(s)) {
431 printf("Invalid config parameters\n");
434 snprintf(s, sizeof(s), "%.*s", size, p);
435 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
436 if (nb_token <= FLD_LCORE_TX) {
437 printf("Invalid config parameters\n");
440 for (i = 0; i < nb_token; i++) {
442 int_fld[i] = strtoul(str_fld[i], &end, 0);
443 if (errno != 0 || end == str_fld[i]) {
444 printf("Invalid config parameters\n");
450 port_id = (uint8_t)int_fld[i++];
451 if (port_id >= RTE_MAX_ETHPORTS) {
452 printf("Port ID %d could not exceed the maximum %d\n",
453 port_id, RTE_MAX_ETHPORTS);
456 if (kni_port_params_array[port_id]) {
457 printf("Port %d has been configured\n", port_id);
460 kni_port_params_array[port_id] =
461 rte_zmalloc("KNI_port_params",
462 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
463 kni_port_params_array[port_id]->port_id = port_id;
464 kni_port_params_array[port_id]->lcore_rx =
465 (uint8_t)int_fld[i++];
466 kni_port_params_array[port_id]->lcore_tx =
467 (uint8_t)int_fld[i++];
468 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
469 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
470 printf("lcore_rx %u or lcore_tx %u ID could not "
471 "exceed the maximum %u\n",
472 kni_port_params_array[port_id]->lcore_rx,
473 kni_port_params_array[port_id]->lcore_tx,
474 (unsigned)RTE_MAX_LCORE);
477 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
478 kni_port_params_array[port_id]->lcore_k[j] =
480 kni_port_params_array[port_id]->nb_lcore_k = j;
487 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
488 if (kni_port_params_array[i]) {
489 rte_free(kni_port_params_array[i]);
490 kni_port_params_array[i] = NULL;
498 validate_parameters(uint32_t portmask)
503 printf("No port configured in port mask\n");
507 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
508 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
509 (!(portmask & (1 << i)) && kni_port_params_array[i]))
510 rte_exit(EXIT_FAILURE, "portmask is not consistent "
511 "to port ids specified in --config\n");
513 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
514 (unsigned)(kni_port_params_array[i]->lcore_rx)))
515 rte_exit(EXIT_FAILURE, "lcore id %u for "
516 "port %d receiving not enabled\n",
517 kni_port_params_array[i]->lcore_rx,
518 kni_port_params_array[i]->port_id);
520 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
521 (unsigned)(kni_port_params_array[i]->lcore_tx)))
522 rte_exit(EXIT_FAILURE, "lcore id %u for "
523 "port %d transmitting not enabled\n",
524 kni_port_params_array[i]->lcore_tx,
525 kni_port_params_array[i]->port_id);
532 #define CMDLINE_OPT_CONFIG "config"
534 /* Parse the arguments given in the command line of the application */
536 parse_args(int argc, char **argv)
538 int opt, longindex, ret = 0;
539 const char *prgname = argv[0];
540 static struct option longopts[] = {
541 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
545 /* Disable printing messages within getopt() */
548 /* Parse command line */
549 while ((opt = getopt_long(argc, argv, "p:P", longopts,
550 &longindex)) != EOF) {
553 ports_mask = parse_unsigned(optarg);
559 if (!strncmp(longopts[longindex].name,
561 sizeof(CMDLINE_OPT_CONFIG))) {
562 ret = parse_config(optarg);
564 printf("Invalid config\n");
565 print_usage(prgname);
571 print_usage(prgname);
572 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
576 /* Check that options were parsed ok */
577 if (validate_parameters(ports_mask) < 0) {
578 print_usage(prgname);
579 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
585 /* Initialize KNI subsystem */
589 unsigned int num_of_kni_ports = 0, i;
590 struct kni_port_params **params = kni_port_params_array;
592 /* Calculate the maximum number of KNI interfaces that will be used */
593 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
594 if (kni_port_params_array[i]) {
595 num_of_kni_ports += (params[i]->nb_lcore_k ?
596 params[i]->nb_lcore_k : 1);
600 /* Invoke rte KNI init to preallocate the ports */
601 rte_kni_init(num_of_kni_ports);
604 /* Initialise a single port on an Ethernet device */
606 init_port(uint8_t port)
610 /* Initialise device and RX/TX queues */
611 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
613 ret = rte_eth_dev_configure(port, 1, 1, &port_conf);
615 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
616 (unsigned)port, ret);
618 ret = rte_eth_rx_queue_setup(port, 0, NB_RXD,
619 rte_eth_dev_socket_id(port), NULL, pktmbuf_pool);
621 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
622 "port%u (%d)\n", (unsigned)port, ret);
624 ret = rte_eth_tx_queue_setup(port, 0, NB_TXD,
625 rte_eth_dev_socket_id(port), NULL);
627 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
628 "port%u (%d)\n", (unsigned)port, ret);
630 ret = rte_eth_dev_start(port);
632 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
633 (unsigned)port, ret);
636 rte_eth_promiscuous_enable(port);
639 /* Check the link status of all ports in up to 9s, and print them finally */
641 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
643 #define CHECK_INTERVAL 100 /* 100ms */
644 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
645 uint8_t portid, count, all_ports_up, print_flag = 0;
646 struct rte_eth_link link;
648 printf("\nChecking link status\n");
650 for (count = 0; count <= MAX_CHECK_TIME; count++) {
652 for (portid = 0; portid < port_num; portid++) {
653 if ((port_mask & (1 << portid)) == 0)
655 memset(&link, 0, sizeof(link));
656 rte_eth_link_get_nowait(portid, &link);
657 /* print link status if flag set */
658 if (print_flag == 1) {
659 if (link.link_status)
660 printf("Port %d Link Up - speed %u "
661 "Mbps - %s\n", (uint8_t)portid,
662 (unsigned)link.link_speed,
663 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
664 ("full-duplex") : ("half-duplex\n"));
666 printf("Port %d Link Down\n",
670 /* clear all_ports_up flag if any link down */
671 if (link.link_status == ETH_LINK_DOWN) {
676 /* after finally printing all link status, get out */
680 if (all_ports_up == 0) {
683 rte_delay_ms(CHECK_INTERVAL);
686 /* set the print_flag if all ports up or timeout */
687 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
694 /* Callback for request of changing MTU */
696 kni_change_mtu(uint8_t port_id, unsigned new_mtu)
699 struct rte_eth_conf conf;
701 if (port_id >= rte_eth_dev_count()) {
702 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
706 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
708 /* Stop specific port */
709 rte_eth_dev_stop(port_id);
711 memcpy(&conf, &port_conf, sizeof(conf));
713 if (new_mtu > ETHER_MAX_LEN)
714 conf.rxmode.jumbo_frame = 1;
716 conf.rxmode.jumbo_frame = 0;
718 /* mtu + length of header + length of FCS = max pkt length */
719 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
721 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
723 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
727 /* Restart specific port */
728 ret = rte_eth_dev_start(port_id);
730 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
737 /* Callback for request of configuring network interface up/down */
739 kni_config_network_interface(uint8_t port_id, uint8_t if_up)
743 if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) {
744 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
748 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
749 port_id, if_up ? "up" : "down");
751 if (if_up != 0) { /* Configure network interface up */
752 rte_eth_dev_stop(port_id);
753 ret = rte_eth_dev_start(port_id);
754 } else /* Configure network interface down */
755 rte_eth_dev_stop(port_id);
758 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
764 kni_alloc(uint8_t port_id)
768 struct rte_kni_conf conf;
769 struct kni_port_params **params = kni_port_params_array;
771 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
774 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
775 params[port_id]->nb_lcore_k : 1;
777 for (i = 0; i < params[port_id]->nb_kni; i++) {
778 /* Clear conf at first */
779 memset(&conf, 0, sizeof(conf));
780 if (params[port_id]->nb_lcore_k) {
781 snprintf(conf.name, RTE_KNI_NAMESIZE,
782 "vEth%u_%u", port_id, i);
783 conf.core_id = params[port_id]->lcore_k[i];
786 snprintf(conf.name, RTE_KNI_NAMESIZE,
788 conf.group_id = (uint16_t)port_id;
789 conf.mbuf_size = MAX_PACKET_SZ;
791 * The first KNI device associated to a port
792 * is the master, for multiple kernel thread
796 struct rte_kni_ops ops;
797 struct rte_eth_dev_info dev_info;
799 memset(&dev_info, 0, sizeof(dev_info));
800 rte_eth_dev_info_get(port_id, &dev_info);
801 conf.addr = dev_info.pci_dev->addr;
802 conf.id = dev_info.pci_dev->id;
804 memset(&ops, 0, sizeof(ops));
805 ops.port_id = port_id;
806 ops.change_mtu = kni_change_mtu;
807 ops.config_network_if = kni_config_network_interface;
809 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
811 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
814 rte_exit(EXIT_FAILURE, "Fail to create kni for "
815 "port: %d\n", port_id);
816 params[port_id]->kni[i] = kni;
823 kni_free_kni(uint8_t port_id)
826 struct kni_port_params **p = kni_port_params_array;
828 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
831 for (i = 0; i < p[port_id]->nb_kni; i++) {
832 if (rte_kni_release(p[port_id]->kni[i]))
833 printf("Fail to release kni\n");
834 p[port_id]->kni[i] = NULL;
836 rte_eth_dev_stop(port_id);
841 /* Initialise ports/queues etc. and start main loop on each core */
843 main(int argc, char** argv)
846 uint8_t nb_sys_ports, port;
849 /* Associate signal_hanlder function with USR signals */
850 signal(SIGUSR1, signal_handler);
851 signal(SIGUSR2, signal_handler);
852 signal(SIGRTMIN, signal_handler);
853 signal(SIGINT, signal_handler);
856 ret = rte_eal_init(argc, argv);
858 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
862 /* Parse application arguments (after the EAL ones) */
863 ret = parse_args(argc, argv);
865 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
867 /* Create the mbuf pool */
868 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
869 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
870 if (pktmbuf_pool == NULL) {
871 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
875 /* Get number of ports found in scan */
876 nb_sys_ports = rte_eth_dev_count();
877 if (nb_sys_ports == 0)
878 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
880 /* Check if the configured port ID is valid */
881 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
882 if (kni_port_params_array[i] && i >= nb_sys_ports)
883 rte_exit(EXIT_FAILURE, "Configured invalid "
886 /* Initialize KNI subsystem */
889 /* Initialise each port */
890 for (port = 0; port < nb_sys_ports; port++) {
891 /* Skip ports that are not enabled */
892 if (!(ports_mask & (1 << port)))
896 if (port >= RTE_MAX_ETHPORTS)
897 rte_exit(EXIT_FAILURE, "Can not use more than "
898 "%d ports for kni\n", RTE_MAX_ETHPORTS);
902 check_all_ports_link_status(nb_sys_ports, ports_mask);
904 /* Launch per-lcore function on every lcore */
905 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
906 RTE_LCORE_FOREACH_SLAVE(i) {
907 if (rte_eal_wait_lcore(i) < 0)
911 /* Release resources */
912 for (port = 0; port < nb_sys_ports; port++) {
913 if (!(ports_mask & (1 << port)))
917 #ifdef RTE_LIBRTE_XEN_DOM0
920 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
921 if (kni_port_params_array[i]) {
922 rte_free(kni_port_params_array[i]);
923 kni_port_params_array[i] = NULL;