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 .mq_mode = ETH_MQ_TX_NONE,
102 /* Mempool for mbufs */
103 static struct rte_mempool * pktmbuf_pool = NULL;
105 /* Mask of enabled ports */
106 static uint32_t ports_mask = 0;
107 /* Ports set in promiscuous mode off by default. */
108 static int promiscuous_on = 0;
110 /* Structure type for recording kni interface specific stats */
111 struct kni_interface_stats {
112 /* number of pkts received from NIC, and sent to KNI */
115 /* number of pkts received from NIC, but failed to send to KNI */
118 /* number of pkts received from KNI, and sent to NIC */
121 /* number of pkts received from KNI, but failed to send to NIC */
125 /* kni device statistics array */
126 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
128 static int kni_change_mtu(uint16_t port_id, unsigned int new_mtu);
129 static int kni_config_network_interface(uint16_t port_id, uint8_t if_up);
130 static int kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]);
132 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
134 /* Print out statistics on packets handled */
140 printf("\n**KNI example application statistics**\n"
141 "====== ============== ============ ============ ============ ============\n"
142 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
143 "------ -------------- ------------ ------------ ------------ ------------\n");
144 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
145 if (!kni_port_params_array[i])
148 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
150 kni_port_params_array[i]->lcore_rx,
151 kni_port_params_array[i]->lcore_tx,
152 kni_stats[i].rx_packets,
153 kni_stats[i].rx_dropped,
154 kni_stats[i].tx_packets,
155 kni_stats[i].tx_dropped);
157 printf("====== ============== ============ ============ ============ ============\n");
160 /* Custom handling of signals to handle stats and kni processing */
162 signal_handler(int signum)
164 /* When we receive a USR1 signal, print stats */
165 if (signum == SIGUSR1) {
169 /* When we receive a USR2 signal, reset stats */
170 if (signum == SIGUSR2) {
171 memset(&kni_stats, 0, sizeof(kni_stats));
172 printf("\n**Statistics have been reset**\n");
176 /* When we receive a RTMIN or SIGINT signal, stop kni processing */
177 if (signum == SIGRTMIN || signum == SIGINT){
178 printf("SIGRTMIN is received, and the KNI processing is "
180 rte_atomic32_inc(&kni_stop);
186 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
193 for (i = 0; i < num; i++) {
194 rte_pktmbuf_free(pkts[i]);
200 * Interface to burst rx and enqueue mbufs into rx_q
203 kni_ingress(struct kni_port_params *p)
209 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
215 port_id = p->port_id;
216 for (i = 0; i < nb_kni; i++) {
217 /* Burst rx from eth */
218 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
219 if (unlikely(nb_rx > PKT_BURST_SZ)) {
220 RTE_LOG(ERR, APP, "Error receiving from eth\n");
223 /* Burst tx to kni */
224 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
225 kni_stats[port_id].rx_packets += num;
227 rte_kni_handle_request(p->kni[i]);
228 if (unlikely(num < nb_rx)) {
229 /* Free mbufs not tx to kni interface */
230 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
231 kni_stats[port_id].rx_dropped += nb_rx - num;
237 * Interface to dequeue mbufs from tx_q and burst tx
240 kni_egress(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 kni */
255 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
256 if (unlikely(num > PKT_BURST_SZ)) {
257 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
260 /* Burst tx to eth */
261 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
262 kni_stats[port_id].tx_packets += nb_tx;
263 if (unlikely(nb_tx < num)) {
264 /* Free mbufs not tx to NIC */
265 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
266 kni_stats[port_id].tx_dropped += num - nb_tx;
272 main_loop(__rte_unused void *arg)
276 const unsigned lcore_id = rte_lcore_id();
283 enum lcore_rxtx flag = LCORE_NONE;
285 RTE_ETH_FOREACH_DEV(i) {
286 if (!kni_port_params_array[i])
288 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
291 } else if (kni_port_params_array[i]->lcore_tx ==
298 if (flag == LCORE_RX) {
299 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
300 kni_port_params_array[i]->lcore_rx,
301 kni_port_params_array[i]->port_id);
303 f_stop = rte_atomic32_read(&kni_stop);
306 kni_ingress(kni_port_params_array[i]);
308 } else if (flag == LCORE_TX) {
309 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
310 kni_port_params_array[i]->lcore_tx,
311 kni_port_params_array[i]->port_id);
313 f_stop = rte_atomic32_read(&kni_stop);
316 kni_egress(kni_port_params_array[i]);
319 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
324 /* Display usage instructions */
326 print_usage(const char *prgname)
328 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
329 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
330 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
331 " -p PORTMASK: hex bitmask of ports to use\n"
332 " -P : enable promiscuous mode\n"
333 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
334 "port and lcore configurations\n",
338 /* Convert string to unsigned number. 0 is returned if error occurs */
340 parse_unsigned(const char *portmask)
345 num = strtoul(portmask, &end, 16);
346 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
349 return (uint32_t)num;
356 struct kni_port_params **p = kni_port_params_array;
358 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
361 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
362 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
363 p[i]->lcore_rx, p[i]->lcore_tx);
364 for (j = 0; j < p[i]->nb_lcore_k; j++)
365 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
371 parse_config(const char *arg)
373 const char *p, *p0 = arg;
380 _NUM_FLD = KNI_MAX_KTHREAD + 3,
383 char *str_fld[_NUM_FLD];
384 unsigned long int_fld[_NUM_FLD];
385 uint16_t port_id, nb_kni_port_params = 0;
387 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
388 while (((p = strchr(p0, '(')) != NULL) &&
389 nb_kni_port_params < RTE_MAX_ETHPORTS) {
391 if ((p0 = strchr(p, ')')) == NULL)
394 if (size >= sizeof(s)) {
395 printf("Invalid config parameters\n");
398 snprintf(s, sizeof(s), "%.*s", size, p);
399 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
400 if (nb_token <= FLD_LCORE_TX) {
401 printf("Invalid config parameters\n");
404 for (i = 0; i < nb_token; i++) {
406 int_fld[i] = strtoul(str_fld[i], &end, 0);
407 if (errno != 0 || end == str_fld[i]) {
408 printf("Invalid config parameters\n");
414 port_id = int_fld[i++];
415 if (port_id >= RTE_MAX_ETHPORTS) {
416 printf("Port ID %d could not exceed the maximum %d\n",
417 port_id, RTE_MAX_ETHPORTS);
420 if (kni_port_params_array[port_id]) {
421 printf("Port %d has been configured\n", port_id);
424 kni_port_params_array[port_id] =
425 rte_zmalloc("KNI_port_params",
426 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
427 kni_port_params_array[port_id]->port_id = port_id;
428 kni_port_params_array[port_id]->lcore_rx =
429 (uint8_t)int_fld[i++];
430 kni_port_params_array[port_id]->lcore_tx =
431 (uint8_t)int_fld[i++];
432 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
433 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
434 printf("lcore_rx %u or lcore_tx %u ID could not "
435 "exceed the maximum %u\n",
436 kni_port_params_array[port_id]->lcore_rx,
437 kni_port_params_array[port_id]->lcore_tx,
438 (unsigned)RTE_MAX_LCORE);
441 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
442 kni_port_params_array[port_id]->lcore_k[j] =
444 kni_port_params_array[port_id]->nb_lcore_k = j;
451 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
452 if (kni_port_params_array[i]) {
453 rte_free(kni_port_params_array[i]);
454 kni_port_params_array[i] = NULL;
462 validate_parameters(uint32_t portmask)
467 printf("No port configured in port mask\n");
471 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
472 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
473 (!(portmask & (1 << i)) && kni_port_params_array[i]))
474 rte_exit(EXIT_FAILURE, "portmask is not consistent "
475 "to port ids specified in --config\n");
477 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
478 (unsigned)(kni_port_params_array[i]->lcore_rx)))
479 rte_exit(EXIT_FAILURE, "lcore id %u for "
480 "port %d receiving not enabled\n",
481 kni_port_params_array[i]->lcore_rx,
482 kni_port_params_array[i]->port_id);
484 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
485 (unsigned)(kni_port_params_array[i]->lcore_tx)))
486 rte_exit(EXIT_FAILURE, "lcore id %u for "
487 "port %d transmitting not enabled\n",
488 kni_port_params_array[i]->lcore_tx,
489 kni_port_params_array[i]->port_id);
496 #define CMDLINE_OPT_CONFIG "config"
498 /* Parse the arguments given in the command line of the application */
500 parse_args(int argc, char **argv)
502 int opt, longindex, ret = 0;
503 const char *prgname = argv[0];
504 static struct option longopts[] = {
505 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
509 /* Disable printing messages within getopt() */
512 /* Parse command line */
513 while ((opt = getopt_long(argc, argv, "p:P", longopts,
514 &longindex)) != EOF) {
517 ports_mask = parse_unsigned(optarg);
523 if (!strncmp(longopts[longindex].name,
525 sizeof(CMDLINE_OPT_CONFIG))) {
526 ret = parse_config(optarg);
528 printf("Invalid config\n");
529 print_usage(prgname);
535 print_usage(prgname);
536 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
540 /* Check that options were parsed ok */
541 if (validate_parameters(ports_mask) < 0) {
542 print_usage(prgname);
543 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
549 /* Initialize KNI subsystem */
553 unsigned int num_of_kni_ports = 0, i;
554 struct kni_port_params **params = kni_port_params_array;
556 /* Calculate the maximum number of KNI interfaces that will be used */
557 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
558 if (kni_port_params_array[i]) {
559 num_of_kni_ports += (params[i]->nb_lcore_k ?
560 params[i]->nb_lcore_k : 1);
564 /* Invoke rte KNI init to preallocate the ports */
565 rte_kni_init(num_of_kni_ports);
568 /* Initialise a single port on an Ethernet device */
570 init_port(uint16_t port)
573 uint16_t nb_rxd = NB_RXD;
574 uint16_t nb_txd = NB_TXD;
575 struct rte_eth_dev_info dev_info;
576 struct rte_eth_rxconf rxq_conf;
577 struct rte_eth_txconf txq_conf;
578 struct rte_eth_conf local_port_conf = port_conf;
580 /* Initialise device and RX/TX queues */
581 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
583 rte_eth_dev_info_get(port, &dev_info);
584 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
585 local_port_conf.txmode.offloads |=
586 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
587 ret = rte_eth_dev_configure(port, 1, 1, &local_port_conf);
589 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
590 (unsigned)port, ret);
592 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
594 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
595 "for port%u (%d)\n", (unsigned)port, ret);
597 rxq_conf = dev_info.default_rxconf;
598 rxq_conf.offloads = local_port_conf.rxmode.offloads;
599 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
600 rte_eth_dev_socket_id(port), &rxq_conf, pktmbuf_pool);
602 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
603 "port%u (%d)\n", (unsigned)port, ret);
605 txq_conf = dev_info.default_txconf;
606 txq_conf.offloads = local_port_conf.txmode.offloads;
607 ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
608 rte_eth_dev_socket_id(port), &txq_conf);
610 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
611 "port%u (%d)\n", (unsigned)port, ret);
613 ret = rte_eth_dev_start(port);
615 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
616 (unsigned)port, ret);
619 rte_eth_promiscuous_enable(port);
622 /* Check the link status of all ports in up to 9s, and print them finally */
624 check_all_ports_link_status(uint32_t port_mask)
626 #define CHECK_INTERVAL 100 /* 100ms */
627 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
629 uint8_t count, all_ports_up, print_flag = 0;
630 struct rte_eth_link link;
632 printf("\nChecking link status\n");
634 for (count = 0; count <= MAX_CHECK_TIME; count++) {
636 RTE_ETH_FOREACH_DEV(portid) {
637 if ((port_mask & (1 << portid)) == 0)
639 memset(&link, 0, sizeof(link));
640 rte_eth_link_get_nowait(portid, &link);
641 /* print link status if flag set */
642 if (print_flag == 1) {
643 if (link.link_status)
645 "Port%d Link Up - speed %uMbps - %s\n",
646 portid, link.link_speed,
647 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
648 ("full-duplex") : ("half-duplex\n"));
650 printf("Port %d Link Down\n", portid);
653 /* clear all_ports_up flag if any link down */
654 if (link.link_status == ETH_LINK_DOWN) {
659 /* after finally printing all link status, get out */
663 if (all_ports_up == 0) {
666 rte_delay_ms(CHECK_INTERVAL);
669 /* set the print_flag if all ports up or timeout */
670 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
677 /* Callback for request of changing MTU */
679 kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
682 uint16_t nb_rxd = NB_RXD;
683 struct rte_eth_conf conf;
684 struct rte_eth_dev_info dev_info;
685 struct rte_eth_rxconf rxq_conf;
687 if (!rte_eth_dev_is_valid_port(port_id)) {
688 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
692 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
694 /* Stop specific port */
695 rte_eth_dev_stop(port_id);
697 memcpy(&conf, &port_conf, sizeof(conf));
699 if (new_mtu > ETHER_MAX_LEN)
700 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
702 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
704 /* mtu + length of header + length of FCS = max pkt length */
705 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
707 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
709 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
713 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, NULL);
715 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
716 "for port%u (%d)\n", (unsigned int)port_id,
719 rte_eth_dev_info_get(port_id, &dev_info);
720 rxq_conf = dev_info.default_rxconf;
721 rxq_conf.offloads = conf.rxmode.offloads;
722 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
723 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool);
725 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n",
730 /* Restart specific port */
731 ret = rte_eth_dev_start(port_id);
733 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
740 /* Callback for request of configuring network interface up/down */
742 kni_config_network_interface(uint16_t port_id, uint8_t if_up)
746 if (!rte_eth_dev_is_valid_port(port_id)) {
747 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
751 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
752 port_id, if_up ? "up" : "down");
754 if (if_up != 0) { /* Configure network interface up */
755 rte_eth_dev_stop(port_id);
756 ret = rte_eth_dev_start(port_id);
757 } else /* Configure network interface down */
758 rte_eth_dev_stop(port_id);
761 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
767 print_ethaddr(const char *name, struct ether_addr *mac_addr)
769 char buf[ETHER_ADDR_FMT_SIZE];
770 ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, mac_addr);
771 RTE_LOG(INFO, APP, "\t%s%s\n", name, buf);
774 /* Callback for request of configuring mac address */
776 kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[])
780 if (!rte_eth_dev_is_valid_port(port_id)) {
781 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
785 RTE_LOG(INFO, APP, "Configure mac address of %d\n", port_id);
786 print_ethaddr("Address:", (struct ether_addr *)mac_addr);
788 ret = rte_eth_dev_default_mac_addr_set(port_id,
789 (struct ether_addr *)mac_addr);
791 RTE_LOG(ERR, APP, "Failed to config mac_addr for port %d\n",
798 kni_alloc(uint16_t port_id)
802 struct rte_kni_conf conf;
803 struct kni_port_params **params = kni_port_params_array;
805 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
808 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
809 params[port_id]->nb_lcore_k : 1;
811 for (i = 0; i < params[port_id]->nb_kni; i++) {
812 /* Clear conf at first */
813 memset(&conf, 0, sizeof(conf));
814 if (params[port_id]->nb_lcore_k) {
815 snprintf(conf.name, RTE_KNI_NAMESIZE,
816 "vEth%u_%u", port_id, i);
817 conf.core_id = params[port_id]->lcore_k[i];
820 snprintf(conf.name, RTE_KNI_NAMESIZE,
822 conf.group_id = port_id;
823 conf.mbuf_size = MAX_PACKET_SZ;
825 * The first KNI device associated to a port
826 * is the master, for multiple kernel thread
830 struct rte_kni_ops ops;
831 struct rte_eth_dev_info dev_info;
832 const struct rte_pci_device *pci_dev;
833 const struct rte_bus *bus = NULL;
835 memset(&dev_info, 0, sizeof(dev_info));
836 rte_eth_dev_info_get(port_id, &dev_info);
839 bus = rte_bus_find_by_device(dev_info.device);
840 if (bus && !strcmp(bus->name, "pci")) {
841 pci_dev = RTE_DEV_TO_PCI(dev_info.device);
842 conf.addr = pci_dev->addr;
843 conf.id = pci_dev->id;
845 /* Get the interface default mac address */
846 rte_eth_macaddr_get(port_id,
847 (struct ether_addr *)&conf.mac_addr);
849 rte_eth_dev_get_mtu(port_id, &conf.mtu);
851 memset(&ops, 0, sizeof(ops));
852 ops.port_id = port_id;
853 ops.change_mtu = kni_change_mtu;
854 ops.config_network_if = kni_config_network_interface;
855 ops.config_mac_address = kni_config_mac_address;
857 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
859 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
862 rte_exit(EXIT_FAILURE, "Fail to create kni for "
863 "port: %d\n", port_id);
864 params[port_id]->kni[i] = kni;
871 kni_free_kni(uint16_t port_id)
874 struct kni_port_params **p = kni_port_params_array;
876 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
879 for (i = 0; i < p[port_id]->nb_kni; i++) {
880 if (rte_kni_release(p[port_id]->kni[i]))
881 printf("Fail to release kni\n");
882 p[port_id]->kni[i] = NULL;
884 rte_eth_dev_stop(port_id);
889 /* Initialise ports/queues etc. and start main loop on each core */
891 main(int argc, char** argv)
894 uint16_t nb_sys_ports, port;
897 /* Associate signal_hanlder function with USR signals */
898 signal(SIGUSR1, signal_handler);
899 signal(SIGUSR2, signal_handler);
900 signal(SIGRTMIN, signal_handler);
901 signal(SIGINT, signal_handler);
904 ret = rte_eal_init(argc, argv);
906 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
910 /* Parse application arguments (after the EAL ones) */
911 ret = parse_args(argc, argv);
913 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
915 /* Create the mbuf pool */
916 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
917 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
918 if (pktmbuf_pool == NULL) {
919 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
923 /* Get number of ports found in scan */
924 nb_sys_ports = rte_eth_dev_count_avail();
925 if (nb_sys_ports == 0)
926 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
928 /* Check if the configured port ID is valid */
929 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
930 if (kni_port_params_array[i] && !rte_eth_dev_is_valid_port(i))
931 rte_exit(EXIT_FAILURE, "Configured invalid "
934 /* Initialize KNI subsystem */
937 /* Initialise each port */
938 RTE_ETH_FOREACH_DEV(port) {
939 /* Skip ports that are not enabled */
940 if (!(ports_mask & (1 << port)))
944 if (port >= RTE_MAX_ETHPORTS)
945 rte_exit(EXIT_FAILURE, "Can not use more than "
946 "%d ports for kni\n", RTE_MAX_ETHPORTS);
950 check_all_ports_link_status(ports_mask);
952 /* Launch per-lcore function on every lcore */
953 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
954 RTE_LCORE_FOREACH_SLAVE(i) {
955 if (rte_eal_wait_lcore(i) < 0)
959 /* Release resources */
960 RTE_ETH_FOREACH_DEV(port) {
961 if (!(ports_mask & (1 << port)))
965 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
966 if (kni_port_params_array[i]) {
967 rte_free(kni_port_params_array[i]);
968 kni_port_params_array[i] = NULL;