4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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_bus_pci.h>
66 #include <rte_debug.h>
67 #include <rte_ether.h>
68 #include <rte_ethdev.h>
69 #include <rte_mempool.h>
71 #include <rte_string_fns.h>
72 #include <rte_cycles.h>
73 #include <rte_malloc.h>
76 /* Macros for printing using RTE_LOG */
77 #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
79 /* Max size of a single packet */
80 #define MAX_PACKET_SZ 2048
82 /* Size of the data buffer in each mbuf */
83 #define MBUF_DATA_SZ (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM)
85 /* Number of mbufs in mempool that is created */
86 #define NB_MBUF (8192 * 16)
88 /* How many packets to attempt to read from NIC in one go */
89 #define PKT_BURST_SZ 32
91 /* How many objects (mbufs) to keep in per-lcore mempool cache */
92 #define MEMPOOL_CACHE_SZ PKT_BURST_SZ
94 /* Number of RX ring descriptors */
97 /* Number of TX ring descriptors */
100 /* Total octets in ethernet header */
101 #define KNI_ENET_HEADER_SIZE 14
103 /* Total octets in the FCS */
104 #define KNI_ENET_FCS_SIZE 4
106 #define KNI_US_PER_SECOND 1000000
107 #define KNI_SECOND_PER_DAY 86400
109 #define KNI_MAX_KTHREAD 32
111 * Structure of port parameters
113 struct kni_port_params {
114 uint16_t port_id;/* Port ID */
115 unsigned lcore_rx; /* lcore ID for RX */
116 unsigned lcore_tx; /* lcore ID for TX */
117 uint32_t nb_lcore_k; /* Number of lcores for KNI multi kernel threads */
118 uint32_t nb_kni; /* Number of KNI devices to be created */
119 unsigned lcore_k[KNI_MAX_KTHREAD]; /* lcore ID list for kthreads */
120 struct rte_kni *kni[KNI_MAX_KTHREAD]; /* KNI context pointers */
121 } __rte_cache_aligned;
123 static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS];
126 /* Options for configuring ethernet port */
127 static struct rte_eth_conf port_conf = {
129 .header_split = 0, /* Header Split disabled */
130 .hw_ip_checksum = 0, /* IP checksum offload disabled */
131 .hw_vlan_filter = 0, /* VLAN filtering disabled */
132 .jumbo_frame = 0, /* Jumbo Frame Support disabled */
133 .hw_strip_crc = 1, /* CRC stripped by hardware */
136 .mq_mode = ETH_MQ_TX_NONE,
140 /* Mempool for mbufs */
141 static struct rte_mempool * pktmbuf_pool = NULL;
143 /* Mask of enabled ports */
144 static uint32_t ports_mask = 0;
145 /* Ports set in promiscuous mode off by default. */
146 static int promiscuous_on = 0;
148 /* Structure type for recording kni interface specific stats */
149 struct kni_interface_stats {
150 /* number of pkts received from NIC, and sent to KNI */
153 /* number of pkts received from NIC, but failed to send to KNI */
156 /* number of pkts received from KNI, and sent to NIC */
159 /* number of pkts received from KNI, but failed to send to NIC */
163 /* kni device statistics array */
164 static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
166 static int kni_change_mtu(uint16_t port_id, unsigned int new_mtu);
167 static int kni_config_network_interface(uint16_t port_id, uint8_t if_up);
169 static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
171 /* Print out statistics on packets handled */
177 printf("\n**KNI example application statistics**\n"
178 "====== ============== ============ ============ ============ ============\n"
179 " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
180 "------ -------------- ------------ ------------ ------------ ------------\n");
181 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
182 if (!kni_port_params_array[i])
185 printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
187 kni_port_params_array[i]->lcore_rx,
188 kni_port_params_array[i]->lcore_tx,
189 kni_stats[i].rx_packets,
190 kni_stats[i].rx_dropped,
191 kni_stats[i].tx_packets,
192 kni_stats[i].tx_dropped);
194 printf("====== ============== ============ ============ ============ ============\n");
197 /* Custom handling of signals to handle stats and kni processing */
199 signal_handler(int signum)
201 /* When we receive a USR1 signal, print stats */
202 if (signum == SIGUSR1) {
206 /* When we receive a USR2 signal, reset stats */
207 if (signum == SIGUSR2) {
208 memset(&kni_stats, 0, sizeof(kni_stats));
209 printf("\n**Statistics have been reset**\n");
213 /* When we receive a RTMIN or SIGINT signal, stop kni processing */
214 if (signum == SIGRTMIN || signum == SIGINT){
215 printf("SIGRTMIN is received, and the KNI processing is "
217 rte_atomic32_inc(&kni_stop);
223 kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
230 for (i = 0; i < num; i++) {
231 rte_pktmbuf_free(pkts[i]);
237 * Interface to burst rx and enqueue mbufs into rx_q
240 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)
283 struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
289 port_id = p->port_id;
290 for (i = 0; i < nb_kni; i++) {
291 /* Burst rx from kni */
292 num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
293 if (unlikely(num > PKT_BURST_SZ)) {
294 RTE_LOG(ERR, APP, "Error receiving from KNI\n");
297 /* Burst tx to eth */
298 nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
299 kni_stats[port_id].tx_packets += nb_tx;
300 if (unlikely(nb_tx < num)) {
301 /* Free mbufs not tx to NIC */
302 kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
303 kni_stats[port_id].tx_dropped += num - nb_tx;
309 main_loop(__rte_unused void *arg)
311 uint8_t i, nb_ports = rte_eth_dev_count();
313 const unsigned lcore_id = rte_lcore_id();
320 enum lcore_rxtx flag = LCORE_NONE;
322 for (i = 0; i < nb_ports; i++) {
323 if (!kni_port_params_array[i])
325 if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
328 } else if (kni_port_params_array[i]->lcore_tx ==
335 if (flag == LCORE_RX) {
336 RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
337 kni_port_params_array[i]->lcore_rx,
338 kni_port_params_array[i]->port_id);
340 f_stop = rte_atomic32_read(&kni_stop);
343 kni_ingress(kni_port_params_array[i]);
345 } else if (flag == LCORE_TX) {
346 RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
347 kni_port_params_array[i]->lcore_tx,
348 kni_port_params_array[i]->port_id);
350 f_stop = rte_atomic32_read(&kni_stop);
353 kni_egress(kni_port_params_array[i]);
356 RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
361 /* Display usage instructions */
363 print_usage(const char *prgname)
365 RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
366 "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
367 "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
368 " -p PORTMASK: hex bitmask of ports to use\n"
369 " -P : enable promiscuous mode\n"
370 " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
371 "port and lcore configurations\n",
375 /* Convert string to unsigned number. 0 is returned if error occurs */
377 parse_unsigned(const char *portmask)
382 num = strtoul(portmask, &end, 16);
383 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
386 return (uint32_t)num;
393 struct kni_port_params **p = kni_port_params_array;
395 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
398 RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
399 RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
400 p[i]->lcore_rx, p[i]->lcore_tx);
401 for (j = 0; j < p[i]->nb_lcore_k; j++)
402 RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
408 parse_config(const char *arg)
410 const char *p, *p0 = arg;
417 _NUM_FLD = KNI_MAX_KTHREAD + 3,
420 char *str_fld[_NUM_FLD];
421 unsigned long int_fld[_NUM_FLD];
422 uint16_t port_id, nb_kni_port_params = 0;
424 memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
425 while (((p = strchr(p0, '(')) != NULL) &&
426 nb_kni_port_params < RTE_MAX_ETHPORTS) {
428 if ((p0 = strchr(p, ')')) == NULL)
431 if (size >= sizeof(s)) {
432 printf("Invalid config parameters\n");
435 snprintf(s, sizeof(s), "%.*s", size, p);
436 nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
437 if (nb_token <= FLD_LCORE_TX) {
438 printf("Invalid config parameters\n");
441 for (i = 0; i < nb_token; i++) {
443 int_fld[i] = strtoul(str_fld[i], &end, 0);
444 if (errno != 0 || end == str_fld[i]) {
445 printf("Invalid config parameters\n");
451 port_id = int_fld[i++];
452 if (port_id >= RTE_MAX_ETHPORTS) {
453 printf("Port ID %d could not exceed the maximum %d\n",
454 port_id, RTE_MAX_ETHPORTS);
457 if (kni_port_params_array[port_id]) {
458 printf("Port %d has been configured\n", port_id);
461 kni_port_params_array[port_id] =
462 rte_zmalloc("KNI_port_params",
463 sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
464 kni_port_params_array[port_id]->port_id = port_id;
465 kni_port_params_array[port_id]->lcore_rx =
466 (uint8_t)int_fld[i++];
467 kni_port_params_array[port_id]->lcore_tx =
468 (uint8_t)int_fld[i++];
469 if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
470 kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
471 printf("lcore_rx %u or lcore_tx %u ID could not "
472 "exceed the maximum %u\n",
473 kni_port_params_array[port_id]->lcore_rx,
474 kni_port_params_array[port_id]->lcore_tx,
475 (unsigned)RTE_MAX_LCORE);
478 for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
479 kni_port_params_array[port_id]->lcore_k[j] =
481 kni_port_params_array[port_id]->nb_lcore_k = j;
488 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
489 if (kni_port_params_array[i]) {
490 rte_free(kni_port_params_array[i]);
491 kni_port_params_array[i] = NULL;
499 validate_parameters(uint32_t portmask)
504 printf("No port configured in port mask\n");
508 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
509 if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
510 (!(portmask & (1 << i)) && kni_port_params_array[i]))
511 rte_exit(EXIT_FAILURE, "portmask is not consistent "
512 "to port ids specified in --config\n");
514 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
515 (unsigned)(kni_port_params_array[i]->lcore_rx)))
516 rte_exit(EXIT_FAILURE, "lcore id %u for "
517 "port %d receiving not enabled\n",
518 kni_port_params_array[i]->lcore_rx,
519 kni_port_params_array[i]->port_id);
521 if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
522 (unsigned)(kni_port_params_array[i]->lcore_tx)))
523 rte_exit(EXIT_FAILURE, "lcore id %u for "
524 "port %d transmitting not enabled\n",
525 kni_port_params_array[i]->lcore_tx,
526 kni_port_params_array[i]->port_id);
533 #define CMDLINE_OPT_CONFIG "config"
535 /* Parse the arguments given in the command line of the application */
537 parse_args(int argc, char **argv)
539 int opt, longindex, ret = 0;
540 const char *prgname = argv[0];
541 static struct option longopts[] = {
542 {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
546 /* Disable printing messages within getopt() */
549 /* Parse command line */
550 while ((opt = getopt_long(argc, argv, "p:P", longopts,
551 &longindex)) != EOF) {
554 ports_mask = parse_unsigned(optarg);
560 if (!strncmp(longopts[longindex].name,
562 sizeof(CMDLINE_OPT_CONFIG))) {
563 ret = parse_config(optarg);
565 printf("Invalid config\n");
566 print_usage(prgname);
572 print_usage(prgname);
573 rte_exit(EXIT_FAILURE, "Invalid option specified\n");
577 /* Check that options were parsed ok */
578 if (validate_parameters(ports_mask) < 0) {
579 print_usage(prgname);
580 rte_exit(EXIT_FAILURE, "Invalid parameters\n");
586 /* Initialize KNI subsystem */
590 unsigned int num_of_kni_ports = 0, i;
591 struct kni_port_params **params = kni_port_params_array;
593 /* Calculate the maximum number of KNI interfaces that will be used */
594 for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
595 if (kni_port_params_array[i]) {
596 num_of_kni_ports += (params[i]->nb_lcore_k ?
597 params[i]->nb_lcore_k : 1);
601 /* Invoke rte KNI init to preallocate the ports */
602 rte_kni_init(num_of_kni_ports);
605 /* Initialise a single port on an Ethernet device */
607 init_port(uint16_t port)
610 uint16_t nb_rxd = NB_RXD;
611 uint16_t nb_txd = NB_TXD;
613 /* Initialise device and RX/TX queues */
614 RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
616 ret = rte_eth_dev_configure(port, 1, 1, &port_conf);
618 rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
619 (unsigned)port, ret);
621 ret = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
623 rte_exit(EXIT_FAILURE, "Could not adjust number of descriptors "
624 "for port%u (%d)\n", (unsigned)port, ret);
626 ret = rte_eth_rx_queue_setup(port, 0, nb_rxd,
627 rte_eth_dev_socket_id(port), NULL, pktmbuf_pool);
629 rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
630 "port%u (%d)\n", (unsigned)port, ret);
632 ret = rte_eth_tx_queue_setup(port, 0, nb_txd,
633 rte_eth_dev_socket_id(port), NULL);
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);
644 rte_eth_promiscuous_enable(port);
647 /* Check the link status of all ports in up to 9s, and print them finally */
649 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
651 #define CHECK_INTERVAL 100 /* 100ms */
652 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
654 uint8_t count, all_ports_up, print_flag = 0;
655 struct rte_eth_link link;
657 printf("\nChecking link status\n");
659 for (count = 0; count <= MAX_CHECK_TIME; count++) {
661 for (portid = 0; portid < port_num; portid++) {
662 if ((port_mask & (1 << portid)) == 0)
664 memset(&link, 0, sizeof(link));
665 rte_eth_link_get_nowait(portid, &link);
666 /* print link status if flag set */
667 if (print_flag == 1) {
668 if (link.link_status)
670 "Port%d Link Up - speed %uMbps - %s\n",
671 portid, link.link_speed,
672 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
673 ("full-duplex") : ("half-duplex\n"));
675 printf("Port %d Link Down\n", portid);
678 /* clear all_ports_up flag if any link down */
679 if (link.link_status == ETH_LINK_DOWN) {
684 /* after finally printing all link status, get out */
688 if (all_ports_up == 0) {
691 rte_delay_ms(CHECK_INTERVAL);
694 /* set the print_flag if all ports up or timeout */
695 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
702 /* Callback for request of changing MTU */
704 kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
707 struct rte_eth_conf conf;
709 if (port_id >= rte_eth_dev_count()) {
710 RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
714 RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
716 /* Stop specific port */
717 rte_eth_dev_stop(port_id);
719 memcpy(&conf, &port_conf, sizeof(conf));
721 if (new_mtu > ETHER_MAX_LEN)
722 conf.rxmode.jumbo_frame = 1;
724 conf.rxmode.jumbo_frame = 0;
726 /* mtu + length of header + length of FCS = max pkt length */
727 conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
729 ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
731 RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
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 kni_alloc(uint16_t port_id)
776 struct rte_kni_conf conf;
777 struct kni_port_params **params = kni_port_params_array;
779 if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
782 params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
783 params[port_id]->nb_lcore_k : 1;
785 for (i = 0; i < params[port_id]->nb_kni; i++) {
786 /* Clear conf at first */
787 memset(&conf, 0, sizeof(conf));
788 if (params[port_id]->nb_lcore_k) {
789 snprintf(conf.name, RTE_KNI_NAMESIZE,
790 "vEth%u_%u", port_id, i);
791 conf.core_id = params[port_id]->lcore_k[i];
794 snprintf(conf.name, RTE_KNI_NAMESIZE,
796 conf.group_id = port_id;
797 conf.mbuf_size = MAX_PACKET_SZ;
799 * The first KNI device associated to a port
800 * is the master, for multiple kernel thread
804 struct rte_kni_ops ops;
805 struct rte_eth_dev_info dev_info;
807 memset(&dev_info, 0, sizeof(dev_info));
808 rte_eth_dev_info_get(port_id, &dev_info);
810 if (dev_info.pci_dev) {
811 conf.addr = dev_info.pci_dev->addr;
812 conf.id = dev_info.pci_dev->id;
815 memset(&ops, 0, sizeof(ops));
816 ops.port_id = port_id;
817 ops.change_mtu = kni_change_mtu;
818 ops.config_network_if = kni_config_network_interface;
820 kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
822 kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
825 rte_exit(EXIT_FAILURE, "Fail to create kni for "
826 "port: %d\n", port_id);
827 params[port_id]->kni[i] = kni;
834 kni_free_kni(uint16_t port_id)
837 struct kni_port_params **p = kni_port_params_array;
839 if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
842 for (i = 0; i < p[port_id]->nb_kni; i++) {
843 if (rte_kni_release(p[port_id]->kni[i]))
844 printf("Fail to release kni\n");
845 p[port_id]->kni[i] = NULL;
847 rte_eth_dev_stop(port_id);
852 /* Initialise ports/queues etc. and start main loop on each core */
854 main(int argc, char** argv)
857 uint16_t nb_sys_ports, port;
860 /* Associate signal_hanlder function with USR signals */
861 signal(SIGUSR1, signal_handler);
862 signal(SIGUSR2, signal_handler);
863 signal(SIGRTMIN, signal_handler);
864 signal(SIGINT, signal_handler);
867 ret = rte_eal_init(argc, argv);
869 rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
873 /* Parse application arguments (after the EAL ones) */
874 ret = parse_args(argc, argv);
876 rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
878 /* Create the mbuf pool */
879 pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
880 MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
881 if (pktmbuf_pool == NULL) {
882 rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
886 /* Get number of ports found in scan */
887 nb_sys_ports = rte_eth_dev_count();
888 if (nb_sys_ports == 0)
889 rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
891 /* Check if the configured port ID is valid */
892 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
893 if (kni_port_params_array[i] && i >= nb_sys_ports)
894 rte_exit(EXIT_FAILURE, "Configured invalid "
897 /* Initialize KNI subsystem */
900 /* Initialise each port */
901 for (port = 0; port < nb_sys_ports; port++) {
902 /* Skip ports that are not enabled */
903 if (!(ports_mask & (1 << port)))
907 if (port >= RTE_MAX_ETHPORTS)
908 rte_exit(EXIT_FAILURE, "Can not use more than "
909 "%d ports for kni\n", RTE_MAX_ETHPORTS);
913 check_all_ports_link_status(nb_sys_ports, ports_mask);
915 /* Launch per-lcore function on every lcore */
916 rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
917 RTE_LCORE_FOREACH_SLAVE(i) {
918 if (rte_eal_wait_lcore(i) < 0)
922 /* Release resources */
923 for (port = 0; port < nb_sys_ports; port++) {
924 if (!(ports_mask & (1 << port)))
928 for (i = 0; i < RTE_MAX_ETHPORTS; i++)
929 if (kni_port_params_array[i]) {
930 rte_free(kni_port_params_array[i]);
931 kni_port_params_array[i] = NULL;