--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <sys/queue.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <getopt.h>
+
+#include <netinet/in.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_debug.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_log.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+#include <rte_malloc.h>
+#include <rte_kni.h>
+
+/* Macros for printing using RTE_LOG */
+#define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
+
+/* Max size of a single packet */
+#define MAX_PACKET_SZ 2048
+
+/* Size of the data buffer in each mbuf */
+#define MBUF_DATA_SZ (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM)
+
+/* Number of mbufs in mempool that is created */
+#define NB_MBUF (8192 * 16)
+
+/* How many packets to attempt to read from NIC in one go */
+#define PKT_BURST_SZ 32
+
+/* How many objects (mbufs) to keep in per-lcore mempool cache */
+#define MEMPOOL_CACHE_SZ PKT_BURST_SZ
+
+/* Number of RX ring descriptors */
+#define NB_RXD 128
+
+/* Number of TX ring descriptors */
+#define NB_TXD 512
+
+/* Total octets in ethernet header */
+#define KNI_ENET_HEADER_SIZE 14
+
+/* Total octets in the FCS */
+#define KNI_ENET_FCS_SIZE 4
+
+#define KNI_US_PER_SECOND 1000000
+#define KNI_SECOND_PER_DAY 86400
+
+#define KNI_MAX_KTHREAD 32
+/*
+ * Structure of port parameters
+ */
+struct kni_port_params {
+ uint8_t port_id;/* Port ID */
+ unsigned lcore_rx; /* lcore ID for RX */
+ unsigned lcore_tx; /* lcore ID for TX */
+ uint32_t nb_lcore_k; /* Number of lcores for KNI multi kernel threads */
+ uint32_t nb_kni; /* Number of KNI devices to be created */
+ unsigned lcore_k[KNI_MAX_KTHREAD]; /* lcore ID list for kthreads */
+ struct rte_kni *kni[KNI_MAX_KTHREAD]; /* KNI context pointers */
+} __rte_cache_aligned;
+
+static struct kni_port_params *kni_port_params_array[RTE_MAX_ETHPORTS];
+
+
+/* Options for configuring ethernet port */
+static struct rte_eth_conf port_conf = {
+ .rxmode = {
+ .header_split = 0, /* Header Split disabled */
+ .hw_ip_checksum = 0, /* IP checksum offload disabled */
+ .hw_vlan_filter = 0, /* VLAN filtering disabled */
+ .jumbo_frame = 0, /* Jumbo Frame Support disabled */
+ .hw_strip_crc = 0, /* CRC stripped by hardware */
+ },
+ .txmode = {
+ .mq_mode = ETH_MQ_TX_NONE,
+ },
+};
+
+/* Mempool for mbufs */
+static struct rte_mempool * pktmbuf_pool = NULL;
+
+/* Mask of enabled ports */
+static uint32_t ports_mask = 0;
+/* Ports set in promiscuous mode off by default. */
+static int promiscuous_on = 0;
+
+/* Structure type for recording kni interface specific stats */
+struct kni_interface_stats {
+ /* number of pkts received from NIC, and sent to KNI */
+ uint64_t rx_packets;
+
+ /* number of pkts received from NIC, but failed to send to KNI */
+ uint64_t rx_dropped;
+
+ /* number of pkts received from KNI, and sent to NIC */
+ uint64_t tx_packets;
+
+ /* number of pkts received from KNI, but failed to send to NIC */
+ uint64_t tx_dropped;
+};
+
+/* kni device statistics array */
+static struct kni_interface_stats kni_stats[RTE_MAX_ETHPORTS];
+
+static int kni_change_mtu(uint8_t port_id, unsigned new_mtu);
+static int kni_config_network_interface(uint8_t port_id, uint8_t if_up);
+
+static rte_atomic32_t kni_stop = RTE_ATOMIC32_INIT(0);
+
+/* Print out statistics on packets handled */
+static void
+print_stats(void)
+{
+ uint8_t i;
+
+ printf("\n**KNI example application statistics**\n"
+ "====== ============== ============ ============ ============ ============\n"
+ " Port Lcore(RX/TX) rx_packets rx_dropped tx_packets tx_dropped\n"
+ "------ -------------- ------------ ------------ ------------ ------------\n");
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (!kni_port_params_array[i])
+ continue;
+
+ printf("%7d %10u/%2u %13"PRIu64" %13"PRIu64" %13"PRIu64" "
+ "%13"PRIu64"\n", i,
+ kni_port_params_array[i]->lcore_rx,
+ kni_port_params_array[i]->lcore_tx,
+ kni_stats[i].rx_packets,
+ kni_stats[i].rx_dropped,
+ kni_stats[i].tx_packets,
+ kni_stats[i].tx_dropped);
+ }
+ printf("====== ============== ============ ============ ============ ============\n");
+}
+
+/* Custom handling of signals to handle stats and kni processing */
+static void
+signal_handler(int signum)
+{
+ /* When we receive a USR1 signal, print stats */
+ if (signum == SIGUSR1) {
+ print_stats();
+ }
+
+ /* When we receive a USR2 signal, reset stats */
+ if (signum == SIGUSR2) {
+ memset(&kni_stats, 0, sizeof(kni_stats));
+ printf("\n**Statistics have been reset**\n");
+ return;
+ }
+
+ /* When we receive a RTMIN or SIGINT signal, stop kni processing */
+ if (signum == SIGRTMIN || signum == SIGINT){
+ printf("SIGRTMIN is received, and the KNI processing is "
+ "going to stop\n");
+ rte_atomic32_inc(&kni_stop);
+ return;
+ }
+}
+
+static void
+kni_burst_free_mbufs(struct rte_mbuf **pkts, unsigned num)
+{
+ unsigned i;
+
+ if (pkts == NULL)
+ return;
+
+ for (i = 0; i < num; i++) {
+ rte_pktmbuf_free(pkts[i]);
+ pkts[i] = NULL;
+ }
+}
+
+/**
+ * Interface to burst rx and enqueue mbufs into rx_q
+ */
+static void
+kni_ingress(struct kni_port_params *p)
+{
+ uint8_t i, port_id;
+ unsigned nb_rx, num;
+ uint32_t nb_kni;
+ struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
+
+ if (p == NULL)
+ return;
+
+ nb_kni = p->nb_kni;
+ port_id = p->port_id;
+ for (i = 0; i < nb_kni; i++) {
+ /* Burst rx from eth */
+ nb_rx = rte_eth_rx_burst(port_id, 0, pkts_burst, PKT_BURST_SZ);
+ if (unlikely(nb_rx > PKT_BURST_SZ)) {
+ RTE_LOG(ERR, APP, "Error receiving from eth\n");
+ return;
+ }
+ /* Burst tx to kni */
+ num = rte_kni_tx_burst(p->kni[i], pkts_burst, nb_rx);
+ kni_stats[port_id].rx_packets += num;
+
+ rte_kni_handle_request(p->kni[i]);
+ if (unlikely(num < nb_rx)) {
+ /* Free mbufs not tx to kni interface */
+ kni_burst_free_mbufs(&pkts_burst[num], nb_rx - num);
+ kni_stats[port_id].rx_dropped += nb_rx - num;
+ }
+ }
+}
+
+/**
+ * Interface to dequeue mbufs from tx_q and burst tx
+ */
+static void
+kni_egress(struct kni_port_params *p)
+{
+ uint8_t i, port_id;
+ unsigned nb_tx, num;
+ uint32_t nb_kni;
+ struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
+
+ if (p == NULL)
+ return;
+
+ nb_kni = p->nb_kni;
+ port_id = p->port_id;
+ for (i = 0; i < nb_kni; i++) {
+ /* Burst rx from kni */
+ num = rte_kni_rx_burst(p->kni[i], pkts_burst, PKT_BURST_SZ);
+ if (unlikely(num > PKT_BURST_SZ)) {
+ RTE_LOG(ERR, APP, "Error receiving from KNI\n");
+ return;
+ }
+ /* Burst tx to eth */
+ nb_tx = rte_eth_tx_burst(port_id, 0, pkts_burst, (uint16_t)num);
+ kni_stats[port_id].tx_packets += nb_tx;
+ if (unlikely(nb_tx < num)) {
+ /* Free mbufs not tx to NIC */
+ kni_burst_free_mbufs(&pkts_burst[nb_tx], num - nb_tx);
+ kni_stats[port_id].tx_dropped += num - nb_tx;
+ }
+ }
+}
+
+static int
+main_loop(__rte_unused void *arg)
+{
+ uint8_t i, nb_ports = rte_eth_dev_count();
+ int32_t f_stop;
+ const unsigned lcore_id = rte_lcore_id();
+ enum lcore_rxtx {
+ LCORE_NONE,
+ LCORE_RX,
+ LCORE_TX,
+ LCORE_MAX
+ };
+ enum lcore_rxtx flag = LCORE_NONE;
+
+ nb_ports = (uint8_t)(nb_ports < RTE_MAX_ETHPORTS ?
+ nb_ports : RTE_MAX_ETHPORTS);
+ for (i = 0; i < nb_ports; i++) {
+ if (!kni_port_params_array[i])
+ continue;
+ if (kni_port_params_array[i]->lcore_rx == (uint8_t)lcore_id) {
+ flag = LCORE_RX;
+ break;
+ } else if (kni_port_params_array[i]->lcore_tx ==
+ (uint8_t)lcore_id) {
+ flag = LCORE_TX;
+ break;
+ }
+ }
+
+ if (flag == LCORE_RX) {
+ RTE_LOG(INFO, APP, "Lcore %u is reading from port %d\n",
+ kni_port_params_array[i]->lcore_rx,
+ kni_port_params_array[i]->port_id);
+ while (1) {
+ f_stop = rte_atomic32_read(&kni_stop);
+ if (f_stop)
+ break;
+ kni_ingress(kni_port_params_array[i]);
+ }
+ } else if (flag == LCORE_TX) {
+ RTE_LOG(INFO, APP, "Lcore %u is writing to port %d\n",
+ kni_port_params_array[i]->lcore_tx,
+ kni_port_params_array[i]->port_id);
+ while (1) {
+ f_stop = rte_atomic32_read(&kni_stop);
+ if (f_stop)
+ break;
+ kni_egress(kni_port_params_array[i]);
+ }
+ } else
+ RTE_LOG(INFO, APP, "Lcore %u has nothing to do\n", lcore_id);
+
+ return 0;
+}
+
+/* Display usage instructions */
+static void
+print_usage(const char *prgname)
+{
+ RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
+ "[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
+ "[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
+ " -p PORTMASK: hex bitmask of ports to use\n"
+ " -P : enable promiscuous mode\n"
+ " --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
+ "port and lcore configurations\n",
+ prgname);
+}
+
+/* Convert string to unsigned number. 0 is returned if error occurs */
+static uint32_t
+parse_unsigned(const char *portmask)
+{
+ char *end = NULL;
+ unsigned long num;
+
+ num = strtoul(portmask, &end, 16);
+ if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
+ return 0;
+
+ return (uint32_t)num;
+}
+
+static void
+print_config(void)
+{
+ uint32_t i, j;
+ struct kni_port_params **p = kni_port_params_array;
+
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (!p[i])
+ continue;
+ RTE_LOG(DEBUG, APP, "Port ID: %d\n", p[i]->port_id);
+ RTE_LOG(DEBUG, APP, "Rx lcore ID: %u, Tx lcore ID: %u\n",
+ p[i]->lcore_rx, p[i]->lcore_tx);
+ for (j = 0; j < p[i]->nb_lcore_k; j++)
+ RTE_LOG(DEBUG, APP, "Kernel thread lcore ID: %u\n",
+ p[i]->lcore_k[j]);
+ }
+}
+
+static int
+parse_config(const char *arg)
+{
+ const char *p, *p0 = arg;
+ char s[256], *end;
+ unsigned size;
+ enum fieldnames {
+ FLD_PORT = 0,
+ FLD_LCORE_RX,
+ FLD_LCORE_TX,
+ _NUM_FLD = KNI_MAX_KTHREAD + 3,
+ };
+ int i, j, nb_token;
+ char *str_fld[_NUM_FLD];
+ unsigned long int_fld[_NUM_FLD];
+ uint8_t port_id, nb_kni_port_params = 0;
+
+ memset(&kni_port_params_array, 0, sizeof(kni_port_params_array));
+ while (((p = strchr(p0, '(')) != NULL) &&
+ nb_kni_port_params < RTE_MAX_ETHPORTS) {
+ p++;
+ if ((p0 = strchr(p, ')')) == NULL)
+ goto fail;
+ size = p0 - p;
+ if (size >= sizeof(s)) {
+ printf("Invalid config parameters\n");
+ goto fail;
+ }
+ snprintf(s, sizeof(s), "%.*s", size, p);
+ nb_token = rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',');
+ if (nb_token <= FLD_LCORE_TX) {
+ printf("Invalid config parameters\n");
+ goto fail;
+ }
+ for (i = 0; i < nb_token; i++) {
+ errno = 0;
+ int_fld[i] = strtoul(str_fld[i], &end, 0);
+ if (errno != 0 || end == str_fld[i]) {
+ printf("Invalid config parameters\n");
+ goto fail;
+ }
+ }
+
+ i = 0;
+ port_id = (uint8_t)int_fld[i++];
+ if (port_id >= RTE_MAX_ETHPORTS) {
+ printf("Port ID %d could not exceed the maximum %d\n",
+ port_id, RTE_MAX_ETHPORTS);
+ goto fail;
+ }
+ if (kni_port_params_array[port_id]) {
+ printf("Port %d has been configured\n", port_id);
+ goto fail;
+ }
+ kni_port_params_array[port_id] =
+ rte_zmalloc("KNI_port_params",
+ sizeof(struct kni_port_params), RTE_CACHE_LINE_SIZE);
+ kni_port_params_array[port_id]->port_id = port_id;
+ kni_port_params_array[port_id]->lcore_rx =
+ (uint8_t)int_fld[i++];
+ kni_port_params_array[port_id]->lcore_tx =
+ (uint8_t)int_fld[i++];
+ if (kni_port_params_array[port_id]->lcore_rx >= RTE_MAX_LCORE ||
+ kni_port_params_array[port_id]->lcore_tx >= RTE_MAX_LCORE) {
+ printf("lcore_rx %u or lcore_tx %u ID could not "
+ "exceed the maximum %u\n",
+ kni_port_params_array[port_id]->lcore_rx,
+ kni_port_params_array[port_id]->lcore_tx,
+ (unsigned)RTE_MAX_LCORE);
+ goto fail;
+ }
+ for (j = 0; i < nb_token && j < KNI_MAX_KTHREAD; i++, j++)
+ kni_port_params_array[port_id]->lcore_k[j] =
+ (uint8_t)int_fld[i];
+ kni_port_params_array[port_id]->nb_lcore_k = j;
+ }
+ print_config();
+
+ return 0;
+
+fail:
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (kni_port_params_array[i]) {
+ rte_free(kni_port_params_array[i]);
+ kni_port_params_array[i] = NULL;
+ }
+ }
+
+ return -1;
+}
+
+static int
+validate_parameters(uint32_t portmask)
+{
+ uint32_t i;
+
+ if (!portmask) {
+ printf("No port configured in port mask\n");
+ return -1;
+ }
+
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (((portmask & (1 << i)) && !kni_port_params_array[i]) ||
+ (!(portmask & (1 << i)) && kni_port_params_array[i]))
+ rte_exit(EXIT_FAILURE, "portmask is not consistent "
+ "to port ids specified in --config\n");
+
+ if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
+ (unsigned)(kni_port_params_array[i]->lcore_rx)))
+ rte_exit(EXIT_FAILURE, "lcore id %u for "
+ "port %d receiving not enabled\n",
+ kni_port_params_array[i]->lcore_rx,
+ kni_port_params_array[i]->port_id);
+
+ if (kni_port_params_array[i] && !rte_lcore_is_enabled(\
+ (unsigned)(kni_port_params_array[i]->lcore_tx)))
+ rte_exit(EXIT_FAILURE, "lcore id %u for "
+ "port %d transmitting not enabled\n",
+ kni_port_params_array[i]->lcore_tx,
+ kni_port_params_array[i]->port_id);
+
+ }
+
+ return 0;
+}
+
+#define CMDLINE_OPT_CONFIG "config"
+
+/* Parse the arguments given in the command line of the application */
+static int
+parse_args(int argc, char **argv)
+{
+ int opt, longindex, ret = 0;
+ const char *prgname = argv[0];
+ static struct option longopts[] = {
+ {CMDLINE_OPT_CONFIG, required_argument, NULL, 0},
+ {NULL, 0, NULL, 0}
+ };
+
+ /* Disable printing messages within getopt() */
+ opterr = 0;
+
+ /* Parse command line */
+ while ((opt = getopt_long(argc, argv, "p:P", longopts,
+ &longindex)) != EOF) {
+ switch (opt) {
+ case 'p':
+ ports_mask = parse_unsigned(optarg);
+ break;
+ case 'P':
+ promiscuous_on = 1;
+ break;
+ case 0:
+ if (!strncmp(longopts[longindex].name,
+ CMDLINE_OPT_CONFIG,
+ sizeof(CMDLINE_OPT_CONFIG))) {
+ ret = parse_config(optarg);
+ if (ret) {
+ printf("Invalid config\n");
+ print_usage(prgname);
+ return -1;
+ }
+ }
+ break;
+ default:
+ print_usage(prgname);
+ rte_exit(EXIT_FAILURE, "Invalid option specified\n");
+ }
+ }
+
+ /* Check that options were parsed ok */
+ if (validate_parameters(ports_mask) < 0) {
+ print_usage(prgname);
+ rte_exit(EXIT_FAILURE, "Invalid parameters\n");
+ }
+
+ return ret;
+}
+
+/* Initialize KNI subsystem */
+static void
+init_kni(void)
+{
+ unsigned int num_of_kni_ports = 0, i;
+ struct kni_port_params **params = kni_port_params_array;
+
+ /* Calculate the maximum number of KNI interfaces that will be used */
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (kni_port_params_array[i]) {
+ num_of_kni_ports += (params[i]->nb_lcore_k ?
+ params[i]->nb_lcore_k : 1);
+ }
+ }
+
+ /* Invoke rte KNI init to preallocate the ports */
+ rte_kni_init(num_of_kni_ports);
+}
+
+/* Initialise a single port on an Ethernet device */
+static void
+init_port(uint8_t port)
+{
+ int ret;
+
+ /* Initialise device and RX/TX queues */
+ RTE_LOG(INFO, APP, "Initialising port %u ...\n", (unsigned)port);
+ fflush(stdout);
+ ret = rte_eth_dev_configure(port, 1, 1, &port_conf);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not configure port%u (%d)\n",
+ (unsigned)port, ret);
+
+ ret = rte_eth_rx_queue_setup(port, 0, NB_RXD,
+ rte_eth_dev_socket_id(port), NULL, pktmbuf_pool);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not setup up RX queue for "
+ "port%u (%d)\n", (unsigned)port, ret);
+
+ ret = rte_eth_tx_queue_setup(port, 0, NB_TXD,
+ rte_eth_dev_socket_id(port), NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not setup up TX queue for "
+ "port%u (%d)\n", (unsigned)port, ret);
+
+ ret = rte_eth_dev_start(port);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
+ (unsigned)port, ret);
+
+ if (promiscuous_on)
+ rte_eth_promiscuous_enable(port);
+}
+
+/* Check the link status of all ports in up to 9s, and print them finally */
+static void
+check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
+{
+#define CHECK_INTERVAL 100 /* 100ms */
+#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
+ uint8_t portid, count, all_ports_up, print_flag = 0;
+ struct rte_eth_link link;
+
+ printf("\nChecking link status\n");
+ fflush(stdout);
+ for (count = 0; count <= MAX_CHECK_TIME; count++) {
+ all_ports_up = 1;
+ for (portid = 0; portid < port_num; portid++) {
+ if ((port_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ /* print link status if flag set */
+ if (print_flag == 1) {
+ if (link.link_status)
+ printf("Port %d Link Up - speed %u "
+ "Mbps - %s\n", (uint8_t)portid,
+ (unsigned)link.link_speed,
+ (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
+ ("full-duplex") : ("half-duplex\n"));
+ else
+ printf("Port %d Link Down\n",
+ (uint8_t)portid);
+ continue;
+ }
+ /* clear all_ports_up flag if any link down */
+ if (link.link_status == ETH_LINK_DOWN) {
+ all_ports_up = 0;
+ break;
+ }
+ }
+ /* after finally printing all link status, get out */
+ if (print_flag == 1)
+ break;
+
+ if (all_ports_up == 0) {
+ printf(".");
+ fflush(stdout);
+ rte_delay_ms(CHECK_INTERVAL);
+ }
+
+ /* set the print_flag if all ports up or timeout */
+ if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
+ print_flag = 1;
+ printf("done\n");
+ }
+ }
+}
+
+/* Callback for request of changing MTU */
+static int
+kni_change_mtu(uint8_t port_id, unsigned new_mtu)
+{
+ int ret;
+ struct rte_eth_conf conf;
+
+ if (port_id >= rte_eth_dev_count()) {
+ RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
+ return -EINVAL;
+ }
+
+ RTE_LOG(INFO, APP, "Change MTU of port %d to %u\n", port_id, new_mtu);
+
+ /* Stop specific port */
+ rte_eth_dev_stop(port_id);
+
+ memcpy(&conf, &port_conf, sizeof(conf));
+ /* Set new MTU */
+ if (new_mtu > ETHER_MAX_LEN)
+ conf.rxmode.jumbo_frame = 1;
+ else
+ conf.rxmode.jumbo_frame = 0;
+
+ /* mtu + length of header + length of FCS = max pkt length */
+ conf.rxmode.max_rx_pkt_len = new_mtu + KNI_ENET_HEADER_SIZE +
+ KNI_ENET_FCS_SIZE;
+ ret = rte_eth_dev_configure(port_id, 1, 1, &conf);
+ if (ret < 0) {
+ RTE_LOG(ERR, APP, "Fail to reconfigure port %d\n", port_id);
+ return ret;
+ }
+
+ /* Restart specific port */
+ ret = rte_eth_dev_start(port_id);
+ if (ret < 0) {
+ RTE_LOG(ERR, APP, "Fail to restart port %d\n", port_id);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* Callback for request of configuring network interface up/down */
+static int
+kni_config_network_interface(uint8_t port_id, uint8_t if_up)
+{
+ int ret = 0;
+
+ if (port_id >= rte_eth_dev_count() || port_id >= RTE_MAX_ETHPORTS) {
+ RTE_LOG(ERR, APP, "Invalid port id %d\n", port_id);
+ return -EINVAL;
+ }
+
+ RTE_LOG(INFO, APP, "Configure network interface of %d %s\n",
+ port_id, if_up ? "up" : "down");
+
+ if (if_up != 0) { /* Configure network interface up */
+ rte_eth_dev_stop(port_id);
+ ret = rte_eth_dev_start(port_id);
+ } else /* Configure network interface down */
+ rte_eth_dev_stop(port_id);
+
+ if (ret < 0)
+ RTE_LOG(ERR, APP, "Failed to start port %d\n", port_id);
+
+ return ret;
+}
+
+static int
+kni_alloc(uint8_t port_id)
+{
+ uint8_t i;
+ struct rte_kni *kni;
+ struct rte_kni_conf conf;
+ struct kni_port_params **params = kni_port_params_array;
+
+ if (port_id >= RTE_MAX_ETHPORTS || !params[port_id])
+ return -1;
+
+ params[port_id]->nb_kni = params[port_id]->nb_lcore_k ?
+ params[port_id]->nb_lcore_k : 1;
+
+ for (i = 0; i < params[port_id]->nb_kni; i++) {
+ /* Clear conf at first */
+ memset(&conf, 0, sizeof(conf));
+ if (params[port_id]->nb_lcore_k) {
+ snprintf(conf.name, RTE_KNI_NAMESIZE,
+ "vEth%u_%u", port_id, i);
+ conf.core_id = params[port_id]->lcore_k[i];
+ conf.force_bind = 1;
+ } else
+ snprintf(conf.name, RTE_KNI_NAMESIZE,
+ "vEth%u", port_id);
+ conf.group_id = (uint16_t)port_id;
+ conf.mbuf_size = MAX_PACKET_SZ;
+ /*
+ * The first KNI device associated to a port
+ * is the master, for multiple kernel thread
+ * environment.
+ */
+ if (i == 0) {
+ struct rte_kni_ops ops;
+ struct rte_eth_dev_info dev_info;
+
+ memset(&dev_info, 0, sizeof(dev_info));
+ rte_eth_dev_info_get(port_id, &dev_info);
+ conf.addr = dev_info.pci_dev->addr;
+ conf.id = dev_info.pci_dev->id;
+
+ memset(&ops, 0, sizeof(ops));
+ ops.port_id = port_id;
+ ops.change_mtu = kni_change_mtu;
+ ops.config_network_if = kni_config_network_interface;
+
+ kni = rte_kni_alloc(pktmbuf_pool, &conf, &ops);
+ } else
+ kni = rte_kni_alloc(pktmbuf_pool, &conf, NULL);
+
+ if (!kni)
+ rte_exit(EXIT_FAILURE, "Fail to create kni for "
+ "port: %d\n", port_id);
+ params[port_id]->kni[i] = kni;
+ }
+
+ return 0;
+}
+
+static int
+kni_free_kni(uint8_t port_id)
+{
+ uint8_t i;
+ struct kni_port_params **p = kni_port_params_array;
+
+ if (port_id >= RTE_MAX_ETHPORTS || !p[port_id])
+ return -1;
+
+ for (i = 0; i < p[port_id]->nb_kni; i++) {
+ rte_kni_release(p[port_id]->kni[i]);
+ p[port_id]->kni[i] = NULL;
+ }
+ rte_eth_dev_stop(port_id);
+
+ return 0;
+}
+
+/* Initialise ports/queues etc. and start main loop on each core */
+int
+main(int argc, char** argv)
+{
+ int ret;
+ uint8_t nb_sys_ports, port;
+ unsigned i;
+
+ /* Associate signal_hanlder function with USR signals */
+ signal(SIGUSR1, signal_handler);
+ signal(SIGUSR2, signal_handler);
+ signal(SIGRTMIN, signal_handler);
+ signal(SIGINT, signal_handler);
+
+ /* Initialise EAL */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not initialise EAL (%d)\n", ret);
+ argc -= ret;
+ argv += ret;
+
+ /* Parse application arguments (after the EAL ones) */
+ ret = parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Could not parse input parameters\n");
+
+ /* Create the mbuf pool */
+ pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
+ MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ, rte_socket_id());
+ if (pktmbuf_pool == NULL) {
+ rte_exit(EXIT_FAILURE, "Could not initialise mbuf pool\n");
+ return -1;
+ }
+
+ /* Get number of ports found in scan */
+ nb_sys_ports = rte_eth_dev_count();
+ if (nb_sys_ports == 0)
+ rte_exit(EXIT_FAILURE, "No supported Ethernet device found\n");
+
+ /* Check if the configured port ID is valid */
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++)
+ if (kni_port_params_array[i] && i >= nb_sys_ports)
+ rte_exit(EXIT_FAILURE, "Configured invalid "
+ "port ID %u\n", i);
+
+ /* Initialize KNI subsystem */
+ init_kni();
+
+ /* Initialise each port */
+ for (port = 0; port < nb_sys_ports; port++) {
+ /* Skip ports that are not enabled */
+ if (!(ports_mask & (1 << port)))
+ continue;
+ init_port(port);
+
+ if (port >= RTE_MAX_ETHPORTS)
+ rte_exit(EXIT_FAILURE, "Can not use more than "
+ "%d ports for kni\n", RTE_MAX_ETHPORTS);
+
+ kni_alloc(port);
+ }
+ check_all_ports_link_status(nb_sys_ports, ports_mask);
+
+ /* Launch per-lcore function on every lcore */
+ rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
+ RTE_LCORE_FOREACH_SLAVE(i) {
+ if (rte_eal_wait_lcore(i) < 0)
+ return -1;
+ }
+
+ /* Release resources */
+ for (port = 0; port < nb_sys_ports; port++) {
+ if (!(ports_mask & (1 << port)))
+ continue;
+ kni_free_kni(port);
+ }
+#ifdef RTE_LIBRTE_XEN_DOM0
+ rte_kni_close();
+#endif
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++)
+ if (kni_port_params_array[i]) {
+ rte_free(kni_port_params_array[i]);
+ kni_port_params_array[i] = NULL;
+ }
+
+ return 0;
+}
Code Review / deb_dpdk.git / blobdiff