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;
109 /* Monitor link status continually. off by default. */
110 static int monitor_links;
112 /* Structure type for recording kni interface specific stats */
113 struct kni_interface_stats {
114 /* number of pkts received from NIC, and sent to KNI */
117 /* number of pkts received from NIC, but failed to send to KNI */
120 /* number of pkts received from KNI, and sent to NIC */
123 /* number of pkts received from KNI, but failed to send to NIC */
127 /* kni device statistics array */
128 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
130 static int kni_change_mtu(uint16_t port_id, unsigned int new_mtu);
131 static int kni_config_network_interface(uint16_t port_id, uint8_t if_up);
132 static int kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[]);
134 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
135 static rte_atomic32_t kni_pause = 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");
180 * When we receive a RTMIN or SIGINT or SIGTERM signal,
181 * stop kni processing
183 if (signum == SIGRTMIN || signum == SIGINT || signum == SIGTERM) {
184 printf("\nSIGRTMIN/SIGINT/SIGTERM received. "
185 "KNI processing stopping.\n");
186 rte_atomic32_inc(&kni_stop);
192 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
199 for (i = 0; i < num; i++) {
200 rte_pktmbuf_free(pkts[i]);
206 * Interface to burst rx and enqueue mbufs into rx_q
209 kni_ingress(struct kni_port_params *p)
215 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
221 port_id = p->port_id;
222 for (i = 0; i < nb_kni; i++) {
223 /* Burst rx from eth */
224 nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
225 if (unlikely(nb_rx > PKT_BURST_SZ)) {
226 RTE_LOG(ERR, APP, "Error receiving from eth\n");
229 /* Burst tx to kni */
230 num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
232 kni_stats[port_id].rx_packets += num;
234 rte_kni_handle_request(p->kni[i]);
235 if (unlikely(num < nb_rx)) {
236 /* Free mbufs not tx to kni interface */
237 kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
238 kni_stats[port_id].rx_dropped += nb_rx - num;
244 * Interface to dequeue mbufs from tx_q and burst tx
247 kni_egress(struct kni_port_params *p)
253 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
259 port_id = p->port_id;
260 for (i = 0; i < nb_kni; i++) {
261 /* Burst rx from kni */
262 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
263 if (unlikely(num > PKT_BURST_SZ)) {
264 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
267 /* Burst tx to eth */
268 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
270 kni_stats[port_id].tx_packets += nb_tx;
271 if (unlikely(nb_tx < num)) {
272 /* Free mbufs not tx to NIC */
273 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
274 kni_stats[port_id].tx_dropped += num - nb_tx;
280 main_loop(__rte_unused void *arg)
285 const unsigned lcore_id = rte_lcore_id();
292 enum lcore_rxtx flag = LCORE_NONE;
294 RTE_ETH_FOREACH_DEV(i) {
295 if (!kni_port_params_array[i])
297 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
300 } else if (kni_port_params_array[i]->lcore_tx ==
307 if (flag == LCORE_RX) {
308 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
309 kni_port_params_array[i]->lcore_rx,
310 kni_port_params_array[i]->port_id);
312 f_stop = rte_atomic32_read(&kni_stop);
313 f_pause = rte_atomic32_read(&kni_pause);
318 kni_ingress(kni_port_params_array[i]);
320 } else if (flag == LCORE_TX) {
321 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
322 kni_port_params_array[i]->lcore_tx,
323 kni_port_params_array[i]->port_id);
325 f_stop = rte_atomic32_read(&kni_stop);
326 f_pause = rte_atomic32_read(&kni_pause);
331 kni_egress(kni_port_params_array[i]);
334 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
339 /* Display usage instructions */
341 print_usage(const char *prgname)
343 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P -m "
344 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
345 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
346 " -p PORTMASK: hex bitmask of ports to use\n"
347 " -P : enable promiscuous mode\n"
348 " -m : enable monitoring of port carrier state\n"
349 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
350 "port and lcore configurations\n",
354 /* Convert string to unsigned number. 0 is returned if error occurs */
356 parse_unsigned(const char *portmask)
361 num = strtoul(portmask, &end, 16);
362 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
365 return (uint32_t)num;
372 struct kni_port_params **p = kni_port_params_array;
374 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
377 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
378 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
379 p[i]->lcore_rx, p[i]->lcore_tx);
380 for (j = 0; j < p[i]->nb_lcore_k; j++)
381 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
387 parse_config(const char *arg)
389 const char *p, *p0 = arg;
396 _NUM_FLD = KNI_MAX_KTHREAD + 3,
399 char *str_fld[_NUM_FLD];
400 unsigned long int_fld[_NUM_FLD];
401 uint16_t port_id, nb_kni_port_params = 0;
403 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
404 while (((p = strchr(p0, '(')) != NULL) &&
405 nb_kni_port_params < RTE_MAX_ETHPORTS) {
407 if ((p0 = strchr(p, ')')) == NULL)
410 if (size >= sizeof(s)) {
411 printf("Invalid config parameters\n");
414 snprintf(s, sizeof(s), "%.*s", size, p);
415 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
416 if (nb_token <= FLD_LCORE_TX) {
417 printf("Invalid config parameters\n");
420 for (i = 0; i < nb_token; i++) {
422 int_fld[i] = strtoul(str_fld[i], &end, 0);
423 if (errno != 0 || end == str_fld[i]) {
424 printf("Invalid config parameters\n");
430 port_id = int_fld[i++];
431 if (port_id >= RTE_MAX_ETHPORTS) {
432 printf("Port ID %d could not exceed the maximum %d\n",
433 port_id, RTE_MAX_ETHPORTS);
436 if (kni_port_params_array[port_id]) {
437 printf("Port %d has been configured\n", port_id);
440 kni_port_params_array[port_id] =
441 rte_zmalloc("KNI_port_params",
442 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
443 kni_port_params_array[port_id]->port_id = port_id;
444 kni_port_params_array[port_id]->lcore_rx =
445 (uint8_t)int_fld[i++];
446 kni_port_params_array[port_id]->lcore_tx =
447 (uint8_t)int_fld[i++];
448 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
449 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
450 printf("lcore_rx %u or lcore_tx %u ID could not "
451 "exceed the maximum %u\n",
452 kni_port_params_array[port_id]->lcore_rx,
453 kni_port_params_array[port_id]->lcore_tx,
454 (unsigned)RTE_MAX_LCORE);
457 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
458 kni_port_params_array[port_id]->lcore_k[j] =
460 kni_port_params_array[port_id]->nb_lcore_k = j;
467 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
468 if (kni_port_params_array[i]) {
469 rte_free(kni_port_params_array[i]);
470 kni_port_params_array[i] = NULL;
478 validate_parameters(uint32_t portmask)
483 printf("No port configured in port mask\n");
487 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
488 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
489 (!(portmask & (1 << i)) && kni_port_params_array[i]))
490 rte_exit(EXIT_FAILURE, "portmask is not consistent "
491 "to port ids specified in --config\n");
493 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
494 (unsigned)(kni_port_params_array[i]->lcore_rx)))
495 rte_exit(EXIT_FAILURE, "lcore id %u for "
496 "port %d receiving not enabled\n",
497 kni_port_params_array[i]->lcore_rx,
498 kni_port_params_array[i]->port_id);
500 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
501 (unsigned)(kni_port_params_array[i]->lcore_tx)))
502 rte_exit(EXIT_FAILURE, "lcore id %u for "
503 "port %d transmitting not enabled\n",
504 kni_port_params_array[i]->lcore_tx,
505 kni_port_params_array[i]->port_id);
512 #define CMDLINE_OPT_CONFIG "config"
514 /* Parse the arguments given in the command line of the application */
516 parse_args(int argc, char **argv)
518 int opt, longindex, ret = 0;
519 const char *prgname = argv[0];
520 static struct option longopts[] = {
521 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
525 /* Disable printing messages within getopt() */
528 /* Parse command line */
529 while ((opt = getopt_long(argc, argv, "p:Pm", longopts,
530 &longindex)) != EOF) {
533 ports_mask = parse_unsigned(optarg);
542 if (!strncmp(longopts[longindex].name,
544 sizeof(CMDLINE_OPT_CONFIG))) {
545 ret = parse_config(optarg);
547 printf("Invalid config\n");
548 print_usage(prgname);
554 print_usage(prgname);
555 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
559 /* Check that options were parsed ok */
560 if (validate_parameters(ports_mask) < 0) {
561 print_usage(prgname);
562 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
568 /* Initialize KNI subsystem */
572 unsigned int num_of_kni_ports = 0, i;
573 struct kni_port_params **params = kni_port_params_array;
575 /* Calculate the maximum number of KNI interfaces that will be used */
576 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
577 if (kni_port_params_array[i]) {
578 num_of_kni_ports += (params[i]->nb_lcore_k ?
579 params[i]->nb_lcore_k : 1);
583 /* Invoke rte KNI init to preallocate the ports */
584 rte_kni_init(num_of_kni_ports);
587 /* Initialise a single port on an Ethernet device */
589 init_port(uint16_t port)
592 uint16_t nb_rxd = NB_RXD;
593 uint16_t nb_txd = NB_TXD;
594 struct rte_eth_dev_info dev_info;
595 struct rte_eth_rxconf rxq_conf;
596 struct rte_eth_txconf txq_conf;
597 struct rte_eth_conf local_port_conf = port_conf;
599 /* Initialise device and RX/TX queues */
600 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
603 ret = rte_eth_dev_info_get(port, &dev_info);
605 rte_exit(EXIT_FAILURE,
606 "Error during getting device (port %u) info: %s\n",
607 port, strerror(-ret));
609 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
610 local_port_conf.txmode.offloads |=
611 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
612 ret = rte_eth_dev_configure(port, 1, 1, &local_port_conf);
614 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
615 (unsigned)port, ret);
617 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
619 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
620 "for port%u (%d)\n", (unsigned)port, ret);
622 rxq_conf = dev_info.default_rxconf;
623 rxq_conf.offloads = local_port_conf.rxmode.offloads;
624 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
625 rte_eth_dev_socket_id(port), &rxq_conf, pktmbuf_pool);
627 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
628 "port%u (%d)\n", (unsigned)port, ret);
630 txq_conf = dev_info.default_txconf;
631 txq_conf.offloads = local_port_conf.txmode.offloads;
632 ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
633 rte_eth_dev_socket_id(port), &txq_conf);
635 rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
636 "port%u (%d)\n", (unsigned)port, ret);
638 ret = rte_eth_dev_start(port);
640 rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
641 (unsigned)port, ret);
643 if (promiscuous_on) {
644 ret = rte_eth_promiscuous_enable(port);
646 rte_exit(EXIT_FAILURE,
647 "Could not enable promiscuous mode for port%u: %s\n",
648 port, rte_strerror(-ret));
652 /* Check the link status of all ports in up to 9s, and print them finally */
654 check_all_ports_link_status(uint32_t port_mask)
656 #define CHECK_INTERVAL 100 /* 100ms */
657 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
659 uint8_t count, all_ports_up, print_flag = 0;
660 struct rte_eth_link link;
663 printf("\nChecking link status\n");
665 for (count = 0; count <= MAX_CHECK_TIME; count++) {
667 RTE_ETH_FOREACH_DEV(portid) {
668 if ((port_mask & (1 << portid)) == 0)
670 memset(&link, 0, sizeof(link));
671 ret = rte_eth_link_get_nowait(portid, &link);
675 printf("Port %u link get failed: %s\n",
676 portid, rte_strerror(-ret));
679 /* print link status if flag set */
680 if (print_flag == 1) {
681 if (link.link_status)
683 "Port%d Link Up - speed %uMbps - %s\n",
684 portid, link.link_speed,
685 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
686 ("full-duplex") : ("half-duplex\n"));
688 printf("Port %d Link Down\n", portid);
691 /* clear all_ports_up flag if any link down */
692 if (link.link_status == ETH_LINK_DOWN) {
697 /* after finally printing all link status, get out */
701 if (all_ports_up == 0) {
704 rte_delay_ms(CHECK_INTERVAL);
707 /* set the print_flag if all ports up or timeout */
708 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
716 log_link_state(struct rte_kni *kni, int prev, struct rte_eth_link *link)
718 if (kni == NULL || link == NULL)
721 if (prev == ETH_LINK_DOWN && link->link_status == ETH_LINK_UP) {
722 RTE_LOG(INFO, APP, "%s NIC Link is Up %d Mbps %s %s.\n",
723 rte_kni_get_name(kni),
725 link->link_autoneg ? "(AutoNeg)" : "(Fixed)",
726 link->link_duplex ? "Full Duplex" : "Half Duplex");
727 } else if (prev == ETH_LINK_UP && link->link_status == ETH_LINK_DOWN) {
728 RTE_LOG(INFO, APP, "%s NIC Link is Down.\n",
729 rte_kni_get_name(kni));
734 * Monitor the link status of all ports and update the
735 * corresponding KNI interface(s)
738 monitor_all_ports_link_status(void *arg)
741 struct rte_eth_link link;
743 struct kni_port_params **p = kni_port_params_array;
748 while (monitor_links) {
750 RTE_ETH_FOREACH_DEV(portid) {
751 if ((ports_mask & (1 << portid)) == 0)
753 memset(&link, 0, sizeof(link));
754 ret = rte_eth_link_get_nowait(portid, &link);
757 "Get link failed (port %u): %s\n",
758 portid, rte_strerror(-ret));
761 for (i = 0; i < p[portid]->nb_kni; i++) {
762 prev = rte_kni_update_link(p[portid]->kni[i],
764 log_link_state(p[portid]->kni[i], prev, &link);
771 /* Callback for request of changing MTU */
773 kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
776 uint16_t nb_rxd = NB_RXD;
777 struct rte_eth_conf conf;
778 struct rte_eth_dev_info dev_info;
779 struct rte_eth_rxconf rxq_conf;
781 if (!rte_eth_dev_is_valid_port(port_id)) {
782 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
786 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
788 /* Stop specific port */
789 rte_eth_dev_stop(port_id);
791 memcpy(&conf, &port_conf, sizeof(conf));
793 if (new_mtu > RTE_ETHER_MAX_LEN)
794 conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
796 conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
798 /* mtu + length of header + length of FCS = max pkt length */
799 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
801 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
803 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
807 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, NULL);
809 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
810 "for port%u (%d)\n", (unsigned int)port_id,
813 ret = rte_eth_dev_info_get(port_id, &dev_info);
816 "Error during getting device (port %u) info: %s\n",
817 port_id, strerror(-ret));
822 rxq_conf = dev_info.default_rxconf;
823 rxq_conf.offloads = conf.rxmode.offloads;
824 ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
825 rte_eth_dev_socket_id(port_id), &rxq_conf, pktmbuf_pool);
827 RTE_LOG(ERR, APP, "Fail to setup Rx queue of port %d\n",
832 /* Restart specific port */
833 ret = rte_eth_dev_start(port_id);
835 RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
842 /* Callback for request of configuring network interface up/down */
844 kni_config_network_interface(uint16_t port_id, uint8_t if_up)
848 if (!rte_eth_dev_is_valid_port(port_id)) {
849 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
853 RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
854 port_id, if_up ? "up" : "down");
856 rte_atomic32_inc(&kni_pause);
858 if (if_up != 0) { /* Configure network interface up */
859 rte_eth_dev_stop(port_id);
860 ret = rte_eth_dev_start(port_id);
861 } else /* Configure network interface down */
862 rte_eth_dev_stop(port_id);
864 rte_atomic32_dec(&kni_pause);
867 RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
873 print_ethaddr(const char *name, struct rte_ether_addr *mac_addr)
875 char buf[RTE_ETHER_ADDR_FMT_SIZE];
876 rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, mac_addr);
877 RTE_LOG(INFO, APP, "\t%s%s\n", name, buf);
880 /* Callback for request of configuring mac address */
882 kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[])
886 if (!rte_eth_dev_is_valid_port(port_id)) {
887 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
891 RTE_LOG(INFO, APP, "Configure mac address of %d\n", port_id);
892 print_ethaddr("Address:", (struct rte_ether_addr *)mac_addr);
894 ret = rte_eth_dev_default_mac_addr_set(port_id,
895 (struct rte_ether_addr *)mac_addr);
897 RTE_LOG(ERR, APP, "Failed to config mac_addr for port %d\n",
904 kni_alloc(uint16_t port_id)
908 struct rte_kni_conf conf;
909 struct kni_port_params **params = kni_port_params_array;
912 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
915 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
916 params[port_id]->nb_lcore_k : 1;
918 for (i = 0; i < params[port_id]->nb_kni; i++) {
919 /* Clear conf at first */
920 memset(&conf, 0, sizeof(conf));
921 if (params[port_id]->nb_lcore_k) {
922 snprintf(conf.name, RTE_KNI_NAMESIZE,
923 "vEth%u_%u", port_id, i);
924 conf.core_id = params[port_id]->lcore_k[i];
927 snprintf(conf.name, RTE_KNI_NAMESIZE,
929 conf.group_id = port_id;
930 conf.mbuf_size = MAX_PACKET_SZ;
932 * The first KNI device associated to a port
933 * is the master, for multiple kernel thread
937 struct rte_kni_ops ops;
938 struct rte_eth_dev_info dev_info;
940 ret = rte_eth_dev_info_get(port_id, &dev_info);
942 rte_exit(EXIT_FAILURE,
943 "Error during getting device (port %u) info: %s\n",
944 port_id, strerror(-ret));
946 /* Get the interface default mac address */
947 ret = rte_eth_macaddr_get(port_id,
948 (struct rte_ether_addr *)&conf.mac_addr);
950 rte_exit(EXIT_FAILURE,
951 "Failed to get MAC address (port %u): %s\n",
952 port_id, rte_strerror(-ret));
954 rte_eth_dev_get_mtu(port_id, &conf.mtu);
956 conf.min_mtu = dev_info.min_mtu;
957 conf.max_mtu = dev_info.max_mtu;
959 memset(&ops, 0, sizeof(ops));
960 ops.port_id = port_id;
961 ops.change_mtu = kni_change_mtu;
962 ops.config_network_if = kni_config_network_interface;
963 ops.config_mac_address = kni_config_mac_address;
965 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
967 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
970 rte_exit(EXIT_FAILURE, "Fail to create kni for "
971 "port: %d\n", port_id);
972 params[port_id]->kni[i] = kni;
979 kni_free_kni(uint16_t port_id)
982 struct kni_port_params **p = kni_port_params_array;
984 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
987 for (i = 0; i < p[port_id]->nb_kni; i++) {
988 if (rte_kni_release(p[port_id]->kni[i]))
989 printf("Fail to release kni\n");
990 p[port_id]->kni[i] = NULL;
992 rte_eth_dev_stop(port_id);
997 /* Initialise ports/queues etc. and start main loop on each core */
999 main(int argc, char** argv)
1002 uint16_t nb_sys_ports, port;
1005 pthread_t kni_link_tid;
1008 /* Associate signal_hanlder function with USR signals */
1009 signal(SIGUSR1, signal_handler);
1010 signal(SIGUSR2, signal_handler);
1011 signal(SIGRTMIN, signal_handler);
1012 signal(SIGINT, signal_handler);
1013 signal(SIGTERM, signal_handler);
1015 /* Initialise EAL */
1016 ret = rte_eal_init(argc, argv);
1018 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
1022 /* Parse application arguments (after the EAL ones) */
1023 ret = parse_args(argc, argv);
1025 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
1027 /* Create the mbuf pool */
1028 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
1029 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
1030 if (pktmbuf_pool == NULL) {
1031 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
1035 /* Get number of ports found in scan */
1036 nb_sys_ports = rte_eth_dev_count_avail();
1037 if (nb_sys_ports == 0)
1038 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
1040 /* Check if the configured port ID is valid */
1041 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
1042 if (kni_port_params_array[i] && !rte_eth_dev_is_valid_port(i))
1043 rte_exit(EXIT_FAILURE, "Configured invalid "
1046 /* Initialize KNI subsystem */
1049 /* Initialise each port */
1050 RTE_ETH_FOREACH_DEV(port) {
1051 /* Skip ports that are not enabled */
1052 if (!(ports_mask & (1 << port)))
1056 if (port >= RTE_MAX_ETHPORTS)
1057 rte_exit(EXIT_FAILURE, "Can not use more than "
1058 "%d ports for kni\n", RTE_MAX_ETHPORTS);
1062 check_all_ports_link_status(ports_mask);
1065 RTE_LOG(INFO, APP, "========================\n");
1066 RTE_LOG(INFO, APP, "KNI Running\n");
1067 RTE_LOG(INFO, APP, "kill -SIGUSR1 %d\n", pid);
1068 RTE_LOG(INFO, APP, " Show KNI Statistics.\n");
1069 RTE_LOG(INFO, APP, "kill -SIGUSR2 %d\n", pid);
1070 RTE_LOG(INFO, APP, " Zero KNI Statistics.\n");
1071 RTE_LOG(INFO, APP, "========================\n");
1074 ret = rte_ctrl_thread_create(&kni_link_tid,
1075 "KNI link status check", NULL,
1076 monitor_all_ports_link_status, NULL);
1078 rte_exit(EXIT_FAILURE,
1079 "Could not create link status thread!\n");
1081 /* Launch per-lcore function on every lcore */
1082 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
1083 RTE_LCORE_FOREACH_SLAVE(i) {
1084 if (rte_eal_wait_lcore(i) < 0)
1088 pthread_join(kni_link_tid, &retval);
1090 /* Release resources */
1091 RTE_ETH_FOREACH_DEV(port) {
1092 if (!(ports_mask & (1 << port)))
1096 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
1097 if (kni_port_params_array[i]) {
1098 rte_free(kni_port_params_array[i]);
1099 kni_port_params_array[i] = NULL;