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);
134 static int kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]);
136 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
138 /* Print out statistics on packets handled */
144 printf("\n**KNI example application statistics**\n"
145 "====== ============== ============ ============ ============ ============\n"
146 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
147 "------ -------------- ------------ ------------ ------------ ------------\n");
148 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
149 if (!kni_port_params_array[i])
152 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
154 kni_port_params_array[i]->lcore_rx,
155 kni_port_params_array[i]->lcore_tx,
156 kni_stats[i].rx_packets,
157 kni_stats[i].rx_dropped,
158 kni_stats[i].tx_packets,
159 kni_stats[i].tx_dropped);
161 printf("====== ============== ============ ============ ============ ============\n");
164 /* Custom handling of signals to handle stats and kni processing */
166 signal_handler(int signum)
168 /* When we receive a USR1 signal, print stats */
169 if (signum == SIGUSR1) {
173 /* When we receive a USR2 signal, reset stats */
174 if (signum == SIGUSR2) {
175 memset(&kni_stats, 0, sizeof(kni_stats));
176 printf("\n**Statistics have been reset**\n");
180 /* When we receive a RTMIN or SIGINT signal, stop kni processing */
181 if (signum == SIGRTMIN || signum == SIGINT){
182 printf("SIGRTMIN is received, and the KNI processing is "
184 rte_atomic32_inc(&kni_stop);
190 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
197 for (i = 0; i < num; i++) {
198 rte_pktmbuf_free(pkts[i]);
204 * Interface to burst rx and enqueue mbufs into rx_q
207 kni_ingress(struct kni_port_params *p)
213 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
219 port_id = p->port_id;
220 for (i = 0; i < nb_kni; i++) {
221 /* Burst rx from eth */
222 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
223 if (unlikely(nb_rx > PKT_BURST_SZ)) {
224 RTE_LOG(ERR, APP, "Error receiving from eth\n");
227 /* Burst tx to kni */
228 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
229 kni_stats[port_id].rx_packets += num;
231 rte_kni_handle_request(p->kni[i]);
232 if (unlikely(num < nb_rx)) {
233 /* Free mbufs not tx to kni interface */
234 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
235 kni_stats[port_id].rx_dropped += nb_rx - num;
241 * Interface to dequeue mbufs from tx_q and burst tx
244 kni_egress(struct kni_port_params *p)
250 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
256 port_id = p->port_id;
257 for (i = 0; i < nb_kni; i++) {
258 /* Burst rx from kni */
259 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
260 if (unlikely(num > PKT_BURST_SZ)) {
261 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
264 /* Burst tx to eth */
265 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
266 kni_stats[port_id].tx_packets += nb_tx;
267 if (unlikely(nb_tx < num)) {
268 /* Free mbufs not tx to NIC */
269 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
270 kni_stats[port_id].tx_dropped += num - nb_tx;
276 main_loop(__rte_unused void *arg)
278 uint8_t i, nb_ports = rte_eth_dev_count();
280 const unsigned lcore_id = rte_lcore_id();
287 enum lcore_rxtx flag = LCORE_NONE;
289 for (i = 0; i < nb_ports; i++) {
290 if (!kni_port_params_array[i])
292 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
295 } else if (kni_port_params_array[i]->lcore_tx ==
302 if (flag == LCORE_RX) {
303 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
304 kni_port_params_array[i]->lcore_rx,
305 kni_port_params_array[i]->port_id);
307 f_stop = rte_atomic32_read(&kni_stop);
310 kni_ingress(kni_port_params_array[i]);
312 } else if (flag == LCORE_TX) {
313 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
314 kni_port_params_array[i]->lcore_tx,
315 kni_port_params_array[i]->port_id);
317 f_stop = rte_atomic32_read(&kni_stop);
320 kni_egress(kni_port_params_array[i]);
323 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
328 /* Display usage instructions */
330 print_usage(const char *prgname)
332 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
333 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
334 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
335 " -p PORTMASK: hex bitmask of ports to use\n"
336 " -P : enable promiscuous mode\n"
337 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
338 "port and lcore configurations\n",
342 /* Convert string to unsigned number. 0 is returned if error occurs */
344 parse_unsigned(const char *portmask)
349 num = strtoul(portmask, &end, 16);
350 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
353 return (uint32_t)num;
360 struct kni_port_params **p = kni_port_params_array;
362 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
365 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
366 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
367 p[i]->lcore_rx, p[i]->lcore_tx);
368 for (j = 0; j < p[i]->nb_lcore_k; j++)
369 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
375 parse_config(const char *arg)
377 const char *p, *p0 = arg;
384 _NUM_FLD = KNI_MAX_KTHREAD + 3,
387 char *str_fld[_NUM_FLD];
388 unsigned long int_fld[_NUM_FLD];
389 uint16_t port_id, nb_kni_port_params = 0;
391 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
392 while (((p = strchr(p0, '(')) != NULL) &&
393 nb_kni_port_params < RTE_MAX_ETHPORTS) {
395 if ((p0 = strchr(p, ')')) == NULL)
398 if (size >= sizeof(s)) {
399 printf("Invalid config parameters\n");
402 snprintf(s, sizeof(s), "%.*s", size, p);
403 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
404 if (nb_token <= FLD_LCORE_TX) {
405 printf("Invalid config parameters\n");
408 for (i = 0; i < nb_token; i++) {
410 int_fld[i] = strtoul(str_fld[i], &end, 0);
411 if (errno != 0 || end == str_fld[i]) {
412 printf("Invalid config parameters\n");
418 port_id = int_fld[i++];
419 if (port_id >= RTE_MAX_ETHPORTS) {
420 printf("Port ID %d could not exceed the maximum %d\n",
421 port_id, RTE_MAX_ETHPORTS);
424 if (kni_port_params_array[port_id]) {
425 printf("Port %d has been configured\n", port_id);
428 kni_port_params_array[port_id] =
429 rte_zmalloc("KNI_port_params",
430 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
431 kni_port_params_array[port_id]->port_id = port_id;
432 kni_port_params_array[port_id]->lcore_rx =
433 (uint8_t)int_fld[i++];
434 kni_port_params_array[port_id]->lcore_tx =
435 (uint8_t)int_fld[i++];
436 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
437 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
438 printf("lcore_rx %u or lcore_tx %u ID could not "
439 "exceed the maximum %u\n",
440 kni_port_params_array[port_id]->lcore_rx,
441 kni_port_params_array[port_id]->lcore_tx,
442 (unsigned)RTE_MAX_LCORE);
445 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
446 kni_port_params_array[port_id]->lcore_k[j] =
448 kni_port_params_array[port_id]->nb_lcore_k = j;
455 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
456 if (kni_port_params_array[i]) {
457 rte_free(kni_port_params_array[i]);
458 kni_port_params_array[i] = NULL;
466 validate_parameters(uint32_t portmask)
471 printf("No port configured in port mask\n");
475 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
476 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
477 (!(portmask & (1 << i)) && kni_port_params_array[i]))
478 rte_exit(EXIT_FAILURE, "portmask is not consistent "
479 "to port ids specified in --config\n");
481 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
482 (unsigned)(kni_port_params_array[i]->lcore_rx)))
483 rte_exit(EXIT_FAILURE, "lcore id %u for "
484 "port %d receiving not enabled\n",
485 kni_port_params_array[i]->lcore_rx,
486 kni_port_params_array[i]->port_id);
488 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
489 (unsigned)(kni_port_params_array[i]->lcore_tx)))
490 rte_exit(EXIT_FAILURE, "lcore id %u for "
491 "port %d transmitting not enabled\n",
492 kni_port_params_array[i]->lcore_tx,
493 kni_port_params_array[i]->port_id);
500 #define CMDLINE_OPT_CONFIG "config"
502 /* Parse the arguments given in the command line of the application */
504 parse_args(int argc, char **argv)
506 int opt, longindex, ret = 0;
507 const char *prgname = argv[0];
508 static struct option longopts[] = {
509 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
513 /* Disable printing messages within getopt() */
516 /* Parse command line */
517 while ((opt = getopt_long(argc, argv, "p:P", longopts,
518 &longindex)) != EOF) {
521 ports_mask = parse_unsigned(optarg);
527 if (!strncmp(longopts[longindex].name,
529 sizeof(CMDLINE_OPT_CONFIG))) {
530 ret = parse_config(optarg);
532 printf("Invalid config\n");
533 print_usage(prgname);
539 print_usage(prgname);
540 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
544 /* Check that options were parsed ok */
545 if (validate_parameters(ports_mask) < 0) {
546 print_usage(prgname);
547 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
553 /* Initialize KNI subsystem */
557 unsigned int num_of_kni_ports = 0, i;
558 struct kni_port_params **params = kni_port_params_array;
560 /* Calculate the maximum number of KNI interfaces that will be used */
561 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
562 if (kni_port_params_array[i]) {
563 num_of_kni_ports += (params[i]->nb_lcore_k ?
564 params[i]->nb_lcore_k : 1);
568 /* Invoke rte KNI init to preallocate the ports */
569 rte_kni_init(num_of_kni_ports);
572 /* Initialise a single port on an Ethernet device */
574 init_port(uint16_t port)
577 uint16_t nb_rxd = NB_RXD;
578 uint16_t nb_txd = NB_TXD;
579 struct rte_eth_dev_info dev_info;
580 struct rte_eth_rxconf rxq_conf;
581 struct rte_eth_txconf txq_conf;
582 struct rte_eth_conf local_port_conf = port_conf;
584 /* Initialise device and RX/TX queues */
585 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
587 rte_eth_dev_info_get(port, &dev_info);
588 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
589 local_port_conf.txmode.offloads |=
590 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
591 ret = rte_eth_dev_configure(port, 1, 1, &local_port_conf);
593 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
594 (unsigned)port, ret);
596 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
598 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
599 "for port%u (%d)\n", (unsigned)port, ret);
601 rxq_conf = dev_info.default_rxconf;
602 rxq_conf.offloads = local_port_conf.rxmode.offloads;
603 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
604 rte_eth_dev_socket_id(port), &rxq_conf, pktmbuf_pool);
606 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
607 "port%u (%d)\n", (unsigned)port, ret);
609 txq_conf = dev_info.default_txconf;
610 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
611 txq_conf.offloads = local_port_conf.txmode.offloads;
612 ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
613 rte_eth_dev_socket_id(port), &txq_conf);
615 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
616 "port%u (%d)\n", (unsigned)port, ret);
618 ret = rte_eth_dev_start(port);
620 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
621 (unsigned)port, ret);
624 rte_eth_promiscuous_enable(port);
627 /* Check the link status of all ports in up to 9s, and print them finally */
629 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
631 #define CHECK_INTERVAL 100 /* 100ms */
632 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
634 uint8_t count, all_ports_up, print_flag = 0;
635 struct rte_eth_link link;
637 printf("\nChecking link status\n");
639 for (count = 0; count <= MAX_CHECK_TIME; count++) {
641 for (portid = 0; portid < port_num; portid++) {
642 if ((port_mask & (1 << portid)) == 0)
644 memset(&link, 0, sizeof(link));
645 rte_eth_link_get_nowait(portid, &link);
646 /* print link status if flag set */
647 if (print_flag == 1) {
648 if (link.link_status)
650 "Port%d Link Up - speed %uMbps - %s\n",
651 portid, link.link_speed,
652 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
653 ("full-duplex") : ("half-duplex\n"));
655 printf("Port %d Link Down\n", portid);
658 /* clear all_ports_up flag if any link down */
659 if (link.link_status == ETH_LINK_DOWN) {
664 /* after finally printing all link status, get out */
668 if (all_ports_up == 0) {
671 rte_delay_ms(CHECK_INTERVAL);
674 /* set the print_flag if all ports up or timeout */
675 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
682 /* Callback for request of changing MTU */
684 kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
687 uint16_t nb_rxd = NB_RXD;
688 struct rte_eth_conf conf;
689 struct rte_eth_dev_info dev_info;
690 struct rte_eth_rxconf rxq_conf;
692 if (port_id >= rte_eth_dev_count()) {
693 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
697 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
699 /* Stop specific port */
700 rte_eth_dev_stop(port_id);
702 memcpy(&conf, &port_conf, sizeof(conf));
704 if (new_mtu > ETHER_MAX_LEN)
705 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
707 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
709 /* mtu + length of header + length of FCS = max pkt length */
710 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
712 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
714 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
718 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, NULL);
720 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
721 "for port%u (%d)\n", (unsigned int)port_id,
724 rte_eth_dev_info_get(port_id, &dev_info);
725 rxq_conf = dev_info.default_rxconf;
726 rxq_conf.offloads = conf.rxmode.offloads;
727 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
728 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool);
730 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n",
735 /* Restart specific port */
736 ret = rte_eth_dev_start(port_id);
738 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
745 /* Callback for request of configuring network interface up/down */
747 kni_config_network_interface(uint16_t port_id, uint8_t if_up)
751 if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) {
752 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
756 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
757 port_id, if_up ? "up" : "down");
759 if (if_up != 0) { /* Configure network interface up */
760 rte_eth_dev_stop(port_id);
761 ret = rte_eth_dev_start(port_id);
762 } else /* Configure network interface down */
763 rte_eth_dev_stop(port_id);
766 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
772 print_ethaddr(const char *name, struct ether_addr *mac_addr)
774 char buf[ETHER_ADDR_FMT_SIZE];
775 ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, mac_addr);
776 RTE_LOG(INFO, APP, "\t%s%s\n", name, buf);
779 /* Callback for request of configuring mac address */
781 kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[])
785 if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) {
786 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
790 RTE_LOG(INFO, APP, "Configure mac address of %d\n", port_id);
791 print_ethaddr("Address:", (struct ether_addr *)mac_addr);
793 ret = rte_eth_dev_default_mac_addr_set(port_id,
794 (struct ether_addr *)mac_addr);
796 RTE_LOG(ERR, APP, "Failed to config mac_addr for port %d\n",
803 kni_alloc(uint16_t port_id)
807 struct rte_kni_conf conf;
808 struct kni_port_params **params = kni_port_params_array;
810 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
813 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
814 params[port_id]->nb_lcore_k : 1;
816 for (i = 0; i < params[port_id]->nb_kni; i++) {
817 /* Clear conf at first */
818 memset(&conf, 0, sizeof(conf));
819 if (params[port_id]->nb_lcore_k) {
820 snprintf(conf.name, RTE_KNI_NAMESIZE,
821 "vEth%u_%u", port_id, i);
822 conf.core_id = params[port_id]->lcore_k[i];
825 snprintf(conf.name, RTE_KNI_NAMESIZE,
827 conf.group_id = port_id;
828 conf.mbuf_size = MAX_PACKET_SZ;
830 * The first KNI device associated to a port
831 * is the master, for multiple kernel thread
835 struct rte_kni_ops ops;
836 struct rte_eth_dev_info dev_info;
838 memset(&dev_info, 0, sizeof(dev_info));
839 rte_eth_dev_info_get(port_id, &dev_info);
841 if (dev_info.pci_dev) {
842 conf.addr = dev_info.pci_dev->addr;
843 conf.id = dev_info.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();
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] && i >= nb_sys_ports)
931 rte_exit(EXIT_FAILURE, "Configured invalid "
934 /* Initialize KNI subsystem */
937 /* Initialise each port */
938 for (port = 0; port < nb_sys_ports; 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(nb_sys_ports, 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 for (port = 0; port < nb_sys_ports; 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;