X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=examples%2Fl2fwd%2Fmain.c;h=1ad9488755474fef8a829ca7197a64d3058e71b7;hb=d568d5d38d8bbacb43b67a21a39a16df0855774a;hp=593aefdac7969a27b7a677e9748f5cc87f669d2d;hpb=1c17baf48620a075caa0a2e4c19a4097cf5d9302;p=dpdk.git diff --git a/examples/l2fwd/main.c b/examples/l2fwd/main.c index 593aefdac7..1ad9488755 100644 --- a/examples/l2fwd/main.c +++ b/examples/l2fwd/main.c @@ -1,35 +1,34 @@ /*- * BSD LICENSE - * - * Copyright(c) 2010-2013 Intel Corporation. All rights reserved. + * + * Copyright(c) 2010-2016 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 + * + * 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 + * + * * 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 + * * 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 + * * 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 + * + * 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 @@ -45,13 +44,15 @@ #include #include #include +#include +#include #include #include +#include #include #include #include -#include #include #include #include @@ -71,34 +72,14 @@ #include #include -#include "main.h" +static volatile bool force_quit; #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1 -#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) #define NB_MBUF 8192 -/* - * RX and TX Prefetch, Host, and Write-back threshold values should be - * carefully set for optimal performance. Consult the network - * controller's datasheet and supporting DPDK documentation for guidance - * on how these parameters should be set. - */ -#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */ -#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */ -#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */ - -/* - * These default values are optimized for use with the Intel(R) 82599 10 GbE - * Controller and the DPDK ixgbe PMD. Consider using other values for other - * network controllers and/or network drivers. - */ -#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */ -#define TX_HTHRESH 0 /**< Default values of TX host threshold reg. */ -#define TX_WTHRESH 0 /**< Default values of TX write-back threshold reg. */ - #define MAX_PKT_BURST 32 -#define BURST_TX_DRAIN 200000ULL /* around 100us at 2 Ghz */ +#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ /* * Configurable number of RX/TX ring descriptors @@ -119,21 +100,16 @@ static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS]; static unsigned int l2fwd_rx_queue_per_lcore = 1; -struct mbuf_table { - unsigned len; - struct rte_mbuf *m_table[MAX_PKT_BURST]; -}; - #define MAX_RX_QUEUE_PER_LCORE 16 #define MAX_TX_QUEUE_PER_PORT 16 struct lcore_queue_conf { unsigned n_rx_port; unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; - struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS]; - } __rte_cache_aligned; struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; +static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS]; + static const struct rte_eth_conf port_conf = { .rxmode = { .split_hdr_size = 0, @@ -148,24 +124,6 @@ static const struct rte_eth_conf port_conf = { }, }; -static const struct rte_eth_rxconf rx_conf = { - .rx_thresh = { - .pthresh = RX_PTHRESH, - .hthresh = RX_HTHRESH, - .wthresh = RX_WTHRESH, - }, -}; - -static const struct rte_eth_txconf tx_conf = { - .tx_thresh = { - .pthresh = TX_PTHRESH, - .hthresh = TX_HTHRESH, - .wthresh = TX_WTHRESH, - }, - .tx_free_thresh = 0, /* Use PMD default values */ - .tx_rs_thresh = 0, /* Use PMD default values */ -}; - struct rte_mempool * l2fwd_pktmbuf_pool = NULL; /* Per-port statistics struct */ @@ -227,58 +185,14 @@ print_stats(void) printf("\n====================================================\n"); } -/* Send the packet on an output interface */ -static int -l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port) -{ - struct rte_mbuf **m_table; - unsigned ret; - unsigned queueid =0; - - m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table; - - ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n); - port_statistics[port].tx += ret; - if (unlikely(ret < n)) { - port_statistics[port].dropped += (n - ret); - do { - rte_pktmbuf_free(m_table[ret]); - } while (++ret < n); - } - - return 0; -} - -/* Send the packet on an output interface */ -static int -l2fwd_send_packet(struct rte_mbuf *m, uint8_t port) -{ - unsigned lcore_id, len; - struct lcore_queue_conf *qconf; - - lcore_id = rte_lcore_id(); - - qconf = &lcore_queue_conf[lcore_id]; - len = qconf->tx_mbufs[port].len; - qconf->tx_mbufs[port].m_table[len] = m; - len++; - - /* enough pkts to be sent */ - if (unlikely(len == MAX_PKT_BURST)) { - l2fwd_send_burst(qconf, MAX_PKT_BURST, port); - len = 0; - } - - qconf->tx_mbufs[port].len = len; - return 0; -} - static void l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid) { struct ether_hdr *eth; void *tmp; unsigned dst_port; + int sent; + struct rte_eth_dev_tx_buffer *buffer; dst_port = l2fwd_dst_ports[portid]; eth = rte_pktmbuf_mtod(m, struct ether_hdr *); @@ -290,7 +204,10 @@ l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid) /* src addr */ ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr); - l2fwd_send_packet(m, (uint8_t) dst_port); + buffer = tx_buffer[dst_port]; + sent = rte_eth_tx_buffer(dst_port, 0, buffer, m); + if (sent) + port_statistics[dst_port].tx += sent; } /* main processing loop */ @@ -299,12 +216,16 @@ l2fwd_main_loop(void) { struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; struct rte_mbuf *m; + int sent; unsigned lcore_id; - uint64_t prev_tsc = 0; - uint64_t diff_tsc, cur_tsc, timer_tsc; + uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc; unsigned i, j, portid, nb_rx; struct lcore_queue_conf *qconf; + const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * + BURST_TX_DRAIN_US; + struct rte_eth_dev_tx_buffer *buffer; + prev_tsc = 0; timer_tsc = 0; lcore_id = rte_lcore_id(); @@ -312,7 +233,7 @@ l2fwd_main_loop(void) if (qconf->n_rx_port == 0) { RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id); - while(1); + return; } RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id); @@ -322,9 +243,10 @@ l2fwd_main_loop(void) portid = qconf->rx_port_list[i]; RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id, portid); + } - while (1) { + while (!force_quit) { cur_tsc = rte_rdtsc(); @@ -332,15 +254,17 @@ l2fwd_main_loop(void) * TX burst queue drain */ diff_tsc = cur_tsc - prev_tsc; - if (unlikely(diff_tsc > BURST_TX_DRAIN)) { - - for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { - if (qconf->tx_mbufs[portid].len == 0) - continue; - l2fwd_send_burst(&lcore_queue_conf[lcore_id], - qconf->tx_mbufs[portid].len, - (uint8_t) portid); - qconf->tx_mbufs[portid].len = 0; + if (unlikely(diff_tsc > drain_tsc)) { + + for (i = 0; i < qconf->n_rx_port; i++) { + + portid = l2fwd_dst_ports[qconf->rx_port_list[i]]; + buffer = tx_buffer[portid]; + + sent = rte_eth_tx_buffer_flush(portid, 0, buffer); + if (sent) + port_statistics[portid].tx += sent; + } /* if timer is enabled */ @@ -532,8 +456,12 @@ check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) printf("\nChecking link status"); fflush(stdout); for (count = 0; count <= MAX_CHECK_TIME; count++) { + if (force_quit) + return; all_ports_up = 1; for (portid = 0; portid < port_num; portid++) { + if (force_quit) + return; if ((port_mask & (1 << portid)) == 0) continue; memset(&link, 0, sizeof(link)); @@ -552,7 +480,7 @@ check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) continue; } /* clear all_ports_up flag if any link down */ - if (link.link_status == 0) { + if (link.link_status == ETH_LINK_DOWN) { all_ports_up = 0; break; } @@ -575,13 +503,24 @@ check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) } } +static void +signal_handler(int signum) +{ + if (signum == SIGINT || signum == SIGTERM) { + printf("\n\nSignal %d received, preparing to exit...\n", + signum); + force_quit = true; + } +} + int -MAIN(int argc, char **argv) +main(int argc, char **argv) { struct lcore_queue_conf *qconf; struct rte_eth_dev_info dev_info; int ret; uint8_t nb_ports; + uint8_t nb_ports_available; uint8_t portid, last_port; unsigned lcore_id, rx_lcore_id; unsigned nb_ports_in_mask = 0; @@ -593,29 +532,21 @@ MAIN(int argc, char **argv) argc -= ret; argv += ret; + force_quit = false; + signal(SIGINT, signal_handler); + signal(SIGTERM, signal_handler); + /* parse application arguments (after the EAL ones) */ ret = l2fwd_parse_args(argc, argv); if (ret < 0) rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); /* create the mbuf pool */ - l2fwd_pktmbuf_pool = - rte_mempool_create("mbuf_pool", NB_MBUF, - MBUF_SIZE, 32, - sizeof(struct rte_pktmbuf_pool_private), - rte_pktmbuf_pool_init, NULL, - rte_pktmbuf_init, NULL, - rte_socket_id(), 0); + l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32, + 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); if (l2fwd_pktmbuf_pool == NULL) rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); - /* init driver(s) */ - if (rte_pmd_init_all() < 0) - rte_exit(EXIT_FAILURE, "Cannot init pmd\n"); - - if (rte_eal_pci_probe() < 0) - rte_exit(EXIT_FAILURE, "Cannot probe PCI\n"); - nb_ports = rte_eth_dev_count(); if (nb_ports == 0) rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); @@ -647,7 +578,7 @@ MAIN(int argc, char **argv) rte_eth_dev_info_get(portid, &dev_info); } - if (nb_ports_in_mask < 2 || nb_ports_in_mask % 2) { + if (nb_ports_in_mask % 2) { printf("Notice: odd number of ports in portmask.\n"); l2fwd_dst_ports[last_port] = last_port; } @@ -679,11 +610,14 @@ MAIN(int argc, char **argv) printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid); } + nb_ports_available = nb_ports; + /* Initialise each port */ for (portid = 0; portid < nb_ports; portid++) { /* skip ports that are not enabled */ if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { printf("Skipping disabled port %u\n", (unsigned) portid); + nb_ports_available--; continue; } /* init port */ @@ -699,7 +633,8 @@ MAIN(int argc, char **argv) /* init one RX queue */ fflush(stdout); ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, - rte_eth_dev_socket_id(portid), &rx_conf, + rte_eth_dev_socket_id(portid), + NULL, l2fwd_pktmbuf_pool); if (ret < 0) rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", @@ -708,11 +643,29 @@ MAIN(int argc, char **argv) /* init one TX queue on each port */ fflush(stdout); ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, - rte_eth_dev_socket_id(portid), &tx_conf); + rte_eth_dev_socket_id(portid), + NULL); if (ret < 0) rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", ret, (unsigned) portid); + /* Initialize TX buffers */ + tx_buffer[portid] = rte_zmalloc_socket("tx_buffer", + RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0, + rte_eth_dev_socket_id(portid)); + if (tx_buffer[portid] == NULL) + rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n", + (unsigned) portid); + + rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST); + + ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], + rte_eth_tx_buffer_count_callback, + &port_statistics[portid].dropped); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Cannot set error callback for " + "tx buffer on port %u\n", (unsigned) portid); + /* Start device */ ret = rte_eth_dev_start(portid); if (ret < 0) @@ -736,15 +689,32 @@ MAIN(int argc, char **argv) memset(&port_statistics, 0, sizeof(port_statistics)); } + if (!nb_ports_available) { + rte_exit(EXIT_FAILURE, + "All available ports are disabled. Please set portmask.\n"); + } + check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask); + ret = 0; /* launch per-lcore init on every lcore */ rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER); RTE_LCORE_FOREACH_SLAVE(lcore_id) { - if (rte_eal_wait_lcore(lcore_id) < 0) - return -1; + if (rte_eal_wait_lcore(lcore_id) < 0) { + ret = -1; + break; + } } - return 0; -} + for (portid = 0; portid < nb_ports; portid++) { + if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) + continue; + printf("Closing port %d...", portid); + rte_eth_dev_stop(portid); + rte_eth_dev_close(portid); + printf(" Done\n"); + } + printf("Bye...\n"); + return ret; +}