diff options
Diffstat (limited to '')
| -rw-r--r-- | src/seastar/dpdk/examples/l3fwd-vf/Makefile | 56 | ||||
| -rw-r--r-- | src/seastar/dpdk/examples/l3fwd-vf/main.c | 1094 |
2 files changed, 1150 insertions, 0 deletions
diff --git a/src/seastar/dpdk/examples/l3fwd-vf/Makefile b/src/seastar/dpdk/examples/l3fwd-vf/Makefile new file mode 100644 index 00000000..d97611cf --- /dev/null +++ b/src/seastar/dpdk/examples/l3fwd-vf/Makefile @@ -0,0 +1,56 @@ +# 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. + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overriden by command line or environment +RTE_TARGET ?= x86_64-native-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk + +# binary name +APP = l3fwd-vf + +# all source are stored in SRCS-y +SRCS-y := main.c + +CFLAGS += -O3 $(USER_FLAGS) +CFLAGS += $(WERROR_FLAGS) + +# workaround for a gcc bug with noreturn attribute +# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603 +ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) +CFLAGS_main.o += -Wno-return-type +endif + +include $(RTE_SDK)/mk/rte.extapp.mk diff --git a/src/seastar/dpdk/examples/l3fwd-vf/main.c b/src/seastar/dpdk/examples/l3fwd-vf/main.c new file mode 100644 index 00000000..797f722a --- /dev/null +++ b/src/seastar/dpdk/examples/l3fwd-vf/main.c @@ -0,0 +1,1094 @@ +/*- + * 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 <sys/types.h> +#include <string.h> +#include <sys/queue.h> +#include <stdarg.h> +#include <errno.h> +#include <getopt.h> +#include <signal.h> + +#include <rte_common.h> +#include <rte_byteorder.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_spinlock.h> +#include <rte_cycles.h> +#include <rte_prefetch.h> +#include <rte_lcore.h> +#include <rte_per_lcore.h> +#include <rte_branch_prediction.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_random.h> +#include <rte_debug.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_mempool.h> +#include <rte_mbuf.h> +#include <rte_ip.h> +#include <rte_tcp.h> +#include <rte_udp.h> +#include <rte_string_fns.h> + +#define APP_LOOKUP_EXACT_MATCH 0 +#define APP_LOOKUP_LPM 1 +#define DO_RFC_1812_CHECKS + +//#define APP_LOOKUP_METHOD APP_LOOKUP_EXACT_MATCH +#ifndef APP_LOOKUP_METHOD +#define APP_LOOKUP_METHOD APP_LOOKUP_LPM +#endif + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) +#include <rte_hash.h> +#elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM) +#include <rte_lpm.h> +#else +#error "APP_LOOKUP_METHOD set to incorrect value" +#endif + +#define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1 + +#define MEMPOOL_CACHE_SIZE 256 + +/* + * This expression is used to calculate the number of mbufs needed depending on user input, taking + * into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore. + * RTE_MAX is used to ensure that NB_MBUF never goes below a minimum value of 8192 + */ + +#define NB_MBUF RTE_MAX ( \ + (nb_ports*nb_rx_queue*RTE_TEST_RX_DESC_DEFAULT + \ + nb_ports*nb_lcores*MAX_PKT_BURST + \ + nb_ports*n_tx_queue*RTE_TEST_TX_DESC_DEFAULT + \ + nb_lcores*MEMPOOL_CACHE_SIZE), \ + (unsigned)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_US 100 /* TX drain every ~100us */ + +#define NB_SOCKETS 8 + +#define SOCKET0 0 + +/* Configure how many packets ahead to prefetch, when reading packets */ +#define PREFETCH_OFFSET 3 + +/* + * Configurable number of RX/TX ring descriptors + */ +#define RTE_TEST_RX_DESC_DEFAULT 128 +#define RTE_TEST_TX_DESC_DEFAULT 512 +static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT; +static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; + +/* ethernet addresses of ports */ +static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS]; + +/* mask of enabled ports */ +static uint32_t enabled_port_mask = 0; +static int numa_on = 1; /**< NUMA is enabled by default. */ + +struct mbuf_table { + uint16_t len; + struct rte_mbuf *m_table[MAX_PKT_BURST]; +}; + +struct lcore_rx_queue { + uint8_t port_id; + uint8_t queue_id; +} __rte_cache_aligned; + +#define MAX_RX_QUEUE_PER_LCORE 16 +#define MAX_TX_QUEUE_PER_PORT 1 +#define MAX_RX_QUEUE_PER_PORT 1 + +#define MAX_LCORE_PARAMS 1024 +struct lcore_params { + uint8_t port_id; + uint8_t queue_id; + uint8_t lcore_id; +} __rte_cache_aligned; + +static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS]; +static struct lcore_params lcore_params_array_default[] = { + {0, 0, 2}, + {0, 1, 2}, + {0, 2, 2}, + {1, 0, 2}, + {1, 1, 2}, + {1, 2, 2}, + {2, 0, 2}, + {3, 0, 3}, + {3, 1, 3}, +}; + +static struct lcore_params * lcore_params = lcore_params_array_default; +static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) / + sizeof(lcore_params_array_default[0]); + +static struct rte_eth_conf port_conf = { + .rxmode = { + .mq_mode = ETH_MQ_RX_RSS, + .max_rx_pkt_len = ETHER_MAX_LEN, + .split_hdr_size = 0, + .header_split = 0, /**< Header Split disabled */ + .hw_ip_checksum = 1, /**< IP checksum offload enabled */ + .hw_vlan_filter = 0, /**< VLAN filtering disabled */ + .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ + .hw_strip_crc = 1, /**< CRC stripped by hardware */ + }, + .rx_adv_conf = { + .rss_conf = { + .rss_key = NULL, + .rss_hf = ETH_RSS_IP, + }, + }, + .txmode = { + .mq_mode = ETH_MQ_TX_NONE, + }, +}; + +static struct rte_mempool * pktmbuf_pool[NB_SOCKETS]; + + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) + +#ifdef RTE_MACHINE_CPUFLAG_SSE4_2 +#include <rte_hash_crc.h> +#define DEFAULT_HASH_FUNC rte_hash_crc +#else +#include <rte_jhash.h> +#define DEFAULT_HASH_FUNC rte_jhash +#endif + +struct ipv4_5tuple { + uint32_t ip_dst; + uint32_t ip_src; + uint16_t port_dst; + uint16_t port_src; + uint8_t proto; +} __attribute__((__packed__)); + +struct l3fwd_route { + struct ipv4_5tuple key; + uint8_t if_out; +}; + +static struct l3fwd_route l3fwd_route_array[] = { + {{IPv4(100,10,0,1), IPv4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0}, + {{IPv4(100,20,0,2), IPv4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1}, + {{IPv4(100,30,0,3), IPv4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2}, + {{IPv4(100,40,0,4), IPv4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3}, +}; + +typedef struct rte_hash lookup_struct_t; +static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS]; + +#define L3FWD_HASH_ENTRIES 1024 +struct rte_hash_parameters l3fwd_hash_params = { + .name = "l3fwd_hash_0", + .entries = L3FWD_HASH_ENTRIES, + .key_len = sizeof(struct ipv4_5tuple), + .hash_func = DEFAULT_HASH_FUNC, + .hash_func_init_val = 0, + .socket_id = SOCKET0, +}; + +#define L3FWD_NUM_ROUTES \ + (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0])) + +static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned; +#endif + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM) +struct l3fwd_route { + uint32_t ip; + uint8_t depth; + uint8_t if_out; +}; + +static struct l3fwd_route l3fwd_route_array[] = { + {IPv4(1,1,1,0), 24, 0}, + {IPv4(2,1,1,0), 24, 1}, + {IPv4(3,1,1,0), 24, 2}, + {IPv4(4,1,1,0), 24, 3}, + {IPv4(5,1,1,0), 24, 4}, + {IPv4(6,1,1,0), 24, 5}, + {IPv4(7,1,1,0), 24, 6}, + {IPv4(8,1,1,0), 24, 7}, +}; + +#define L3FWD_NUM_ROUTES \ + (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0])) + +#define L3FWD_LPM_MAX_RULES 1024 + +typedef struct rte_lpm lookup_struct_t; +static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS]; +#endif + +struct lcore_conf { + uint16_t n_rx_queue; + struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE]; + uint16_t tx_queue_id; + struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS]; + lookup_struct_t * lookup_struct; +} __rte_cache_aligned; + +static struct lcore_conf lcore_conf[RTE_MAX_LCORE]; +static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER}; +/* Send burst of packets on an output interface */ +static inline int +send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port) +{ + struct rte_mbuf **m_table; + int ret; + uint16_t queueid; + + queueid = qconf->tx_queue_id; + m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table; + + rte_spinlock_lock(&spinlock_conf[port]); + ret = rte_eth_tx_burst(port, queueid, m_table, n); + rte_spinlock_unlock(&spinlock_conf[port]); + + if (unlikely(ret < n)) { + do { + rte_pktmbuf_free(m_table[ret]); + } while (++ret < n); + } + + return 0; +} + +/* Enqueue a single packet, and send burst if queue is filled */ +static inline int +send_single_packet(struct rte_mbuf *m, uint8_t port) +{ + uint32_t lcore_id; + uint16_t len; + struct lcore_conf *qconf; + + lcore_id = rte_lcore_id(); + + qconf = &lcore_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)) { + send_burst(qconf, MAX_PKT_BURST, port); + len = 0; + } + + qconf->tx_mbufs[port].len = len; + return 0; +} + +#ifdef DO_RFC_1812_CHECKS +static inline int +is_valid_ipv4_pkt(struct ipv4_hdr *pkt, uint32_t link_len) +{ + /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */ + /* + * 1. The packet length reported by the Link Layer must be large + * enough to hold the minimum length legal IP datagram (20 bytes). + */ + if (link_len < sizeof(struct ipv4_hdr)) + return -1; + + /* 2. The IP checksum must be correct. */ + /* this is checked in H/W */ + + /* + * 3. The IP version number must be 4. If the version number is not 4 + * then the packet may be another version of IP, such as IPng or + * ST-II. + */ + if (((pkt->version_ihl) >> 4) != 4) + return -3; + /* + * 4. The IP header length field must be large enough to hold the + * minimum length legal IP datagram (20 bytes = 5 words). + */ + if ((pkt->version_ihl & 0xf) < 5) + return -4; + + /* + * 5. The IP total length field must be large enough to hold the IP + * datagram header, whose length is specified in the IP header length + * field. + */ + if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct ipv4_hdr)) + return -5; + + return 0; +} +#endif + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) +static void +print_key(struct ipv4_5tuple key) +{ + printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n", + (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto); +} + +static inline uint8_t +get_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct) +{ + struct ipv4_5tuple key; + struct tcp_hdr *tcp; + struct udp_hdr *udp; + int ret = 0; + + key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr); + key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr); + key.proto = ipv4_hdr->next_proto_id; + + switch (ipv4_hdr->next_proto_id) { + case IPPROTO_TCP: + tcp = (struct tcp_hdr *)((unsigned char *) ipv4_hdr + + sizeof(struct ipv4_hdr)); + key.port_dst = rte_be_to_cpu_16(tcp->dst_port); + key.port_src = rte_be_to_cpu_16(tcp->src_port); + break; + + case IPPROTO_UDP: + udp = (struct udp_hdr *)((unsigned char *) ipv4_hdr + + sizeof(struct ipv4_hdr)); + key.port_dst = rte_be_to_cpu_16(udp->dst_port); + key.port_src = rte_be_to_cpu_16(udp->src_port); + break; + + default: + key.port_dst = 0; + key.port_src = 0; + } + + /* Find destination port */ + ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key); + return (uint8_t)((ret < 0)? portid : l3fwd_out_if[ret]); +} +#endif + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM) +static inline uint8_t +get_dst_port(struct ipv4_hdr *ipv4_hdr, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct) +{ + uint32_t next_hop; + + return (uint8_t) ((rte_lpm_lookup(l3fwd_lookup_struct, + rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)? + next_hop : portid); +} +#endif + +static inline void +l3fwd_simple_forward(struct rte_mbuf *m, uint8_t portid, lookup_struct_t * l3fwd_lookup_struct) +{ + struct ether_hdr *eth_hdr; + struct ipv4_hdr *ipv4_hdr; + void *tmp; + uint8_t dst_port; + + eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); + + ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *, + sizeof(struct ether_hdr)); + +#ifdef DO_RFC_1812_CHECKS + /* Check to make sure the packet is valid (RFC1812) */ + if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) { + rte_pktmbuf_free(m); + return; + } +#endif + + dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct); + if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0) + dst_port = portid; + + /* 02:00:00:00:00:xx */ + tmp = ð_hdr->d_addr.addr_bytes[0]; + *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40); + +#ifdef DO_RFC_1812_CHECKS + /* Update time to live and header checksum */ + --(ipv4_hdr->time_to_live); + ++(ipv4_hdr->hdr_checksum); +#endif + + /* src addr */ + ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr); + + send_single_packet(m, dst_port); + +} + +/* main processing loop */ +static int +main_loop(__attribute__((unused)) void *dummy) +{ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + unsigned lcore_id; + uint64_t prev_tsc, diff_tsc, cur_tsc; + int i, j, nb_rx; + uint8_t portid, queueid; + struct lcore_conf *qconf; + const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; + + prev_tsc = 0; + + lcore_id = rte_lcore_id(); + qconf = &lcore_conf[lcore_id]; + + if (qconf->n_rx_queue == 0) { + RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id); + return 0; + } + + RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id); + + for (i = 0; i < qconf->n_rx_queue; i++) { + + portid = qconf->rx_queue_list[i].port_id; + queueid = qconf->rx_queue_list[i].queue_id; + RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%hhu rxqueueid=%hhu\n", lcore_id, + portid, queueid); + } + + while (1) { + + cur_tsc = rte_rdtsc(); + + /* + * TX burst queue drain + */ + diff_tsc = cur_tsc - prev_tsc; + if (unlikely(diff_tsc > drain_tsc)) { + + /* + * This could be optimized (use queueid instead of + * portid), but it is not called so often + */ + for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { + if (qconf->tx_mbufs[portid].len == 0) + continue; + send_burst(&lcore_conf[lcore_id], + qconf->tx_mbufs[portid].len, + portid); + qconf->tx_mbufs[portid].len = 0; + } + + prev_tsc = cur_tsc; + } + + /* + * Read packet from RX queues + */ + for (i = 0; i < qconf->n_rx_queue; ++i) { + + portid = qconf->rx_queue_list[i].port_id; + queueid = qconf->rx_queue_list[i].queue_id; + nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST); + + /* Prefetch first packets */ + for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) { + rte_prefetch0(rte_pktmbuf_mtod( + pkts_burst[j], void *)); + } + + /* Prefetch and forward already prefetched packets */ + for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) { + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[ + j + PREFETCH_OFFSET], void *)); + l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct); + } + + /* Forward remaining prefetched packets */ + for (; j < nb_rx; j++) { + l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct); + } + } + } +} + +static int +check_lcore_params(void) +{ + uint8_t queue, lcore; + uint16_t i; + int socketid; + + for (i = 0; i < nb_lcore_params; ++i) { + queue = lcore_params[i].queue_id; + if (queue >= MAX_RX_QUEUE_PER_PORT) { + printf("invalid queue number: %hhu\n", queue); + return -1; + } + lcore = lcore_params[i].lcore_id; + if (!rte_lcore_is_enabled(lcore)) { + printf("error: lcore %hhu is not enabled in lcore mask\n", lcore); + return -1; + } + if ((socketid = rte_lcore_to_socket_id(lcore) != 0) && + (numa_on == 0)) { + printf("warning: lcore %hhu is on socket %d with numa off \n", + lcore, socketid); + } + } + return 0; +} + +static int +check_port_config(const unsigned nb_ports) +{ + unsigned portid; + uint16_t i; + + for (i = 0; i < nb_lcore_params; ++i) { + portid = lcore_params[i].port_id; + if ((enabled_port_mask & (1 << portid)) == 0) { + printf("port %u is not enabled in port mask\n", portid); + return -1; + } + if (portid >= nb_ports) { + printf("port %u is not present on the board\n", portid); + return -1; + } + } + return 0; +} + +static uint8_t +get_port_n_rx_queues(const uint8_t port) +{ + int queue = -1; + uint16_t i; + + for (i = 0; i < nb_lcore_params; ++i) { + if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue) + queue = lcore_params[i].queue_id; + } + return (uint8_t)(++queue); +} + +static int +init_lcore_rx_queues(void) +{ + uint16_t i, nb_rx_queue; + uint8_t lcore; + + for (i = 0; i < nb_lcore_params; ++i) { + lcore = lcore_params[i].lcore_id; + nb_rx_queue = lcore_conf[lcore].n_rx_queue; + if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) { + printf("error: too many queues (%u) for lcore: %u\n", + (unsigned)nb_rx_queue + 1, (unsigned)lcore); + return -1; + } else { + lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id = + lcore_params[i].port_id; + lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id = + lcore_params[i].queue_id; + lcore_conf[lcore].n_rx_queue++; + } + } + return 0; +} + +/* display usage */ +static void +print_usage(const char *prgname) +{ + printf ("%s [EAL options] -- -p PORTMASK" + " [--config (port,queue,lcore)[,(port,queue,lcore]]\n" + " -p PORTMASK: hexadecimal bitmask of ports to configure\n" + " --config (port,queue,lcore): rx queues configuration\n" + " --no-numa: optional, disable numa awareness\n", + prgname); +} + +/* Custom handling of signals to handle process terminal */ +static void +signal_handler(int signum) +{ + uint8_t portid; + uint8_t nb_ports = rte_eth_dev_count(); + + /* When we receive a SIGINT signal */ + if (signum == SIGINT) { + for (portid = 0; portid < nb_ports; portid++) { + /* skip ports that are not enabled */ + if ((enabled_port_mask & (1 << portid)) == 0) + continue; + rte_eth_dev_close(portid); + } + } + rte_exit(EXIT_SUCCESS, "\n User forced exit\n"); +} +static int +parse_portmask(const char *portmask) +{ + char *end = NULL; + unsigned long pm; + + /* parse hexadecimal string */ + pm = strtoul(portmask, &end, 16); + if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + + if (pm == 0) + return -1; + + return pm; +} + +static int +parse_config(const char *q_arg) +{ + char s[256]; + const char *p, *p0 = q_arg; + char *end; + enum fieldnames { + FLD_PORT = 0, + FLD_QUEUE, + FLD_LCORE, + _NUM_FLD + }; + unsigned long int_fld[_NUM_FLD]; + char *str_fld[_NUM_FLD]; + int i; + unsigned size; + + nb_lcore_params = 0; + + while ((p = strchr(p0,'(')) != NULL) { + ++p; + if((p0 = strchr(p,')')) == NULL) + return -1; + + size = p0 - p; + if(size >= sizeof(s)) + return -1; + + snprintf(s, sizeof(s), "%.*s", size, p); + if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD) + return -1; + for (i = 0; i < _NUM_FLD; i++){ + errno = 0; + int_fld[i] = strtoul(str_fld[i], &end, 0); + if (errno != 0 || end == str_fld[i] || int_fld[i] > 255) + return -1; + } + if (nb_lcore_params >= MAX_LCORE_PARAMS) { + printf("exceeded max number of lcore params: %hu\n", + nb_lcore_params); + return -1; + } + lcore_params_array[nb_lcore_params].port_id = (uint8_t)int_fld[FLD_PORT]; + lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE]; + lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE]; + ++nb_lcore_params; + } + lcore_params = lcore_params_array; + return 0; +} + +/* Parse the argument given in the command line of the application */ +static int +parse_args(int argc, char **argv) +{ + int opt, ret; + char **argvopt; + int option_index; + char *prgname = argv[0]; + static struct option lgopts[] = { + {"config", 1, 0, 0}, + {"no-numa", 0, 0, 0}, + {NULL, 0, 0, 0} + }; + + argvopt = argv; + + while ((opt = getopt_long(argc, argvopt, "p:", + lgopts, &option_index)) != EOF) { + + switch (opt) { + /* portmask */ + case 'p': + enabled_port_mask = parse_portmask(optarg); + if (enabled_port_mask == 0) { + printf("invalid portmask\n"); + print_usage(prgname); + return -1; + } + break; + + /* long options */ + case 0: + if (!strcmp(lgopts[option_index].name, "config")) { + ret = parse_config(optarg); + if (ret) { + printf("invalid config\n"); + print_usage(prgname); + return -1; + } + } + + if (!strcmp(lgopts[option_index].name, "no-numa")) { + printf("numa is disabled \n"); + numa_on = 0; + } + break; + + default: + print_usage(prgname); + return -1; + } + } + + if (optind >= 0) + argv[optind-1] = prgname; + + ret = optind-1; + optind = 1; /* reset getopt lib */ + return ret; +} + +static void +print_ethaddr(const char *name, const struct ether_addr *eth_addr) +{ + char buf[ETHER_ADDR_FMT_SIZE]; + ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr); + printf("%s%s", name, buf); +} + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH) +static void +setup_hash(int socketid) +{ + unsigned i; + int ret; + char s[64]; + + /* create hashes */ + snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid); + l3fwd_hash_params.name = s; + l3fwd_hash_params.socket_id = socketid; + l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params); + if (l3fwd_lookup_struct[socketid] == NULL) + rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on " + "socket %d\n", socketid); + + /* populate the hash */ + for (i = 0; i < L3FWD_NUM_ROUTES; i++) { + ret = rte_hash_add_key (l3fwd_lookup_struct[socketid], + (void *) &l3fwd_route_array[i].key); + if (ret < 0) { + rte_exit(EXIT_FAILURE, "Unable to add entry %u to the" + "l3fwd hash on socket %d\n", i, socketid); + } + l3fwd_out_if[ret] = l3fwd_route_array[i].if_out; + printf("Hash: Adding key\n"); + print_key(l3fwd_route_array[i].key); + } +} +#endif + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM) +static void +setup_lpm(int socketid) +{ + unsigned i; + int ret; + char s[64]; + + struct rte_lpm_config lpm_ipv4_config; + + lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES; + lpm_ipv4_config.number_tbl8s = 256; + lpm_ipv4_config.flags = 0; + + /* create the LPM table */ + snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid); + l3fwd_lookup_struct[socketid] = + rte_lpm_create(s, socketid, &lpm_ipv4_config); + if (l3fwd_lookup_struct[socketid] == NULL) + rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table" + " on socket %d\n", socketid); + + /* populate the LPM table */ + for (i = 0; i < L3FWD_NUM_ROUTES; i++) { + ret = rte_lpm_add(l3fwd_lookup_struct[socketid], + l3fwd_route_array[i].ip, + l3fwd_route_array[i].depth, + l3fwd_route_array[i].if_out); + + if (ret < 0) { + rte_exit(EXIT_FAILURE, "Unable to add entry %u to the " + "l3fwd LPM table on socket %d\n", + i, socketid); + } + + printf("LPM: Adding route 0x%08x / %d (%d)\n", + (unsigned)l3fwd_route_array[i].ip, + l3fwd_route_array[i].depth, + l3fwd_route_array[i].if_out); + } +} +#endif + +static int +init_mem(unsigned nb_mbuf) +{ + struct lcore_conf *qconf; + int socketid; + unsigned lcore_id; + char s[64]; + + for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) { + if (rte_lcore_is_enabled(lcore_id) == 0) + continue; + + if (numa_on) + socketid = rte_lcore_to_socket_id(lcore_id); + else + socketid = 0; + + if (socketid >= NB_SOCKETS) { + rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n", + socketid, lcore_id, NB_SOCKETS); + } + if (pktmbuf_pool[socketid] == NULL) { + snprintf(s, sizeof(s), "mbuf_pool_%d", socketid); + pktmbuf_pool[socketid] = rte_pktmbuf_pool_create(s, + nb_mbuf, MEMPOOL_CACHE_SIZE, 0, + RTE_MBUF_DEFAULT_BUF_SIZE, socketid); + if (pktmbuf_pool[socketid] == NULL) + rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid); + else + printf("Allocated mbuf pool on socket %d\n", socketid); + +#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM) + setup_lpm(socketid); +#else + setup_hash(socketid); +#endif + } + qconf = &lcore_conf[lcore_id]; + qconf->lookup_struct = l3fwd_lookup_struct[socketid]; + } + return 0; +} + +int +main(int argc, char **argv) +{ + struct lcore_conf *qconf; + struct rte_eth_dev_info dev_info; + struct rte_eth_txconf *txconf; + int ret; + unsigned nb_ports; + uint16_t queueid; + unsigned lcore_id; + uint32_t nb_lcores; + uint16_t n_tx_queue; + uint8_t portid, nb_rx_queue, queue, socketid; + + signal(SIGINT, signal_handler); + /* init EAL */ + ret = rte_eal_init(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n"); + argc -= ret; + argv += ret; + + /* parse application arguments (after the EAL ones) */ + ret = parse_args(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n"); + + if (check_lcore_params() < 0) + rte_exit(EXIT_FAILURE, "check_lcore_params failed\n"); + + ret = init_lcore_rx_queues(); + if (ret < 0) + rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n"); + + nb_ports = rte_eth_dev_count(); + + if (check_port_config(nb_ports) < 0) + rte_exit(EXIT_FAILURE, "check_port_config failed\n"); + + nb_lcores = rte_lcore_count(); + + /* initialize all ports */ + for (portid = 0; portid < nb_ports; portid++) { + /* skip ports that are not enabled */ + if ((enabled_port_mask & (1 << portid)) == 0) { + printf("\nSkipping disabled port %d\n", portid); + continue; + } + + /* init port */ + printf("Initializing port %d ... ", portid ); + fflush(stdout); + + /* must always equal(=1) */ + nb_rx_queue = get_port_n_rx_queues(portid); + n_tx_queue = MAX_TX_QUEUE_PER_PORT; + + printf("Creating queues: nb_rxq=%d nb_txq=%u... ", + nb_rx_queue, (unsigned)1 ); + ret = rte_eth_dev_configure(portid, nb_rx_queue, n_tx_queue, &port_conf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n", + ret, portid); + + rte_eth_macaddr_get(portid, &ports_eth_addr[portid]); + print_ethaddr(" Address:", &ports_eth_addr[portid]); + printf(", "); + + ret = init_mem(NB_MBUF); + if (ret < 0) + rte_exit(EXIT_FAILURE, "init_mem failed\n"); + + /* init one TX queue */ + socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore()); + + printf("txq=%d,%d,%d ", portid, 0, socketid); + fflush(stdout); + + rte_eth_dev_info_get(portid, &dev_info); + txconf = &dev_info.default_txconf; + if (port_conf.rxmode.jumbo_frame) + txconf->txq_flags = 0; + ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, + socketid, txconf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, " + "port=%d\n", ret, portid); + + printf("\n"); + } + + for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) { + if (rte_lcore_is_enabled(lcore_id) == 0) + continue; + qconf = &lcore_conf[lcore_id]; + qconf->tx_queue_id = 0; + + printf("\nInitializing rx queues on lcore %u ... ", lcore_id ); + fflush(stdout); + /* init RX queues */ + for(queue = 0; queue < qconf->n_rx_queue; ++queue) { + portid = qconf->rx_queue_list[queue].port_id; + queueid = qconf->rx_queue_list[queue].queue_id; + + if (numa_on) + socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id); + else + socketid = 0; + + printf("rxq=%d,%d,%d ", portid, queueid, socketid); + fflush(stdout); + + ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd, + socketid, NULL, + pktmbuf_pool[socketid]); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d," + "port=%d\n", ret, portid); + } + } + printf("\n"); + + /* start ports */ + for (portid = 0; portid < nb_ports; portid++) { + if ((enabled_port_mask & (1 << portid)) == 0) { + continue; + } + /* Start device */ + ret = rte_eth_dev_start(portid); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n", + ret, portid); + + printf("done: Port %d\n", portid); + + } + + /* launch per-lcore init on every lcore */ + rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); + RTE_LCORE_FOREACH_SLAVE(lcore_id) { + if (rte_eal_wait_lcore(lcore_id) < 0) + return -1; + } + + return 0; +} |