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examples/server_node_efd/efd_server/init.c
367 строк
9 KB
Stephen Hemminger
examples: remove unnecessary include
17 фев 2026, 20:48
17 фев 2026, 20:48
0b308d5
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/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2016-2017 Intel Corporation */ #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/queue.h> #include <errno.h> #include <stdarg.h> #include <inttypes.h> #include <rte_common.h> #include <rte_memory.h> #include <rte_memzone.h> #include <rte_eal.h> #include <rte_byteorder.h> #include <rte_launch.h> #include <rte_per_lcore.h> #include <rte_lcore.h> #include <rte_branch_prediction.h> #include <rte_debug.h> #include <rte_ring.h> #include <rte_log.h> #include <rte_mempool.h> #include <rte_mbuf.h> #include <rte_interrupts.h> #include <rte_ether.h> #include <rte_ethdev.h> #include <rte_malloc.h> #include <rte_string_fns.h> #include <rte_cycles.h> #include <rte_efd.h> #include <rte_hash.h> #include "common.h" #include "args.h" #include "init.h" #define MBUFS_PER_NODE 1536 #define MBUFS_PER_PORT 1536 #define MBUF_CACHE_SIZE 512 #define RTE_MP_RX_DESC_DEFAULT 512 #define RTE_MP_TX_DESC_DEFAULT 512 #define NODE_QUEUE_RINGSIZE 128 #define NO_FLAGS 0 /* The mbuf pool for packet rx */ struct rte_mempool *pktmbuf_pool; /* array of info/queues for nodes */ struct node *nodes; /* EFD table */ struct rte_efd_table *efd_table; /* Shared info between server and nodes */ struct shared_info *info; /** * Initialise the mbuf pool for packet reception for the NIC, and any other * buffer pools needed by the app - currently none. */ static int init_mbuf_pools(void) { const unsigned int num_mbufs = (num_nodes * MBUFS_PER_NODE) + (info->num_ports * MBUFS_PER_PORT); /* * Don't pass single-producer/single-consumer flags to mbuf create as it * seems faster to use a cache instead */ printf("Creating mbuf pool '%s' [%u mbufs] ...\n", PKTMBUF_POOL_NAME, num_mbufs); pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs, MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); return pktmbuf_pool == NULL; /* 0 on success */ } /** * Initialise an individual port: * - configure number of rx and tx rings * - set up each rx ring, to pull from the main mbuf pool * - set up each tx ring * - start the port and report its status to stdout */ static int init_port(uint16_t port_num) { /* for port configuration all features are off by default */ struct rte_eth_conf port_conf = { .rxmode = { .mq_mode = RTE_ETH_MQ_RX_RSS, }, }; const uint16_t rx_rings = 1, tx_rings = num_nodes; uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT; uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT; struct rte_eth_dev_info dev_info; struct rte_eth_txconf txconf; uint16_t q; int retval; printf("Port %u init ... ", port_num); fflush(stdout); retval = rte_eth_dev_info_get(port_num, &dev_info); if (retval != 0) return retval; if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) port_conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; /* * Standard DPDK port initialisation - config port, then set up * rx and tx rings. */ retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings, &port_conf); if (retval != 0) return retval; retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size, &tx_ring_size); if (retval != 0) return retval; for (q = 0; q < rx_rings; q++) { retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size, rte_eth_dev_socket_id(port_num), NULL, pktmbuf_pool); if (retval < 0) return retval; } txconf = dev_info.default_txconf; txconf.offloads = port_conf.txmode.offloads; for (q = 0; q < tx_rings; q++) { retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size, rte_eth_dev_socket_id(port_num), &txconf); if (retval < 0) return retval; } retval = rte_eth_promiscuous_enable(port_num); if (retval != 0) return retval; retval = rte_eth_dev_start(port_num); if (retval < 0) return retval; printf("done:\n"); return 0; } /** * Set up the DPDK rings which will be used to pass packets, via * pointers, between the multi-process server and node processes. * Each node needs one RX queue. */ static int init_shm_rings(void) { unsigned int i; unsigned int socket_id; const char *q_name; const unsigned int ringsize = NODE_QUEUE_RINGSIZE; nodes = rte_malloc("node details", sizeof(*nodes) * num_nodes, 0); if (nodes == NULL) rte_exit(EXIT_FAILURE, "Cannot allocate memory for " "node program details\n"); for (i = 0; i < num_nodes; i++) { /* Create an RX queue for each node */ socket_id = rte_socket_id(); q_name = get_rx_queue_name(i); nodes[i].rx_q = rte_ring_create(q_name, ringsize, socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); if (nodes[i].rx_q == NULL) rte_exit(EXIT_FAILURE, "Cannot create rx ring queue " "for node %u\n", i); } return 0; } /* * Create EFD table which will contain all the flows * that will be distributed among the nodes */ /* Create EFD table. 8< */ static void create_efd_table(void) { uint8_t socket_id = rte_socket_id(); /* create table */ efd_table = rte_efd_create("flow table", num_flows * 2, sizeof(uint32_t), 1 << socket_id, socket_id); if (efd_table == NULL) rte_exit(EXIT_FAILURE, "Problem creating the flow table\n"); } static void populate_efd_table(void) { unsigned int i; int32_t ret; uint32_t ip_dst; uint8_t socket_id = rte_socket_id(); uint64_t node_id; /* Add flows in table */ for (i = 0; i < num_flows; i++) { node_id = i % num_nodes; ip_dst = rte_cpu_to_be_32(i); ret = rte_efd_update(efd_table, socket_id, (void *)&ip_dst, (efd_value_t)node_id); if (ret < 0) rte_exit(EXIT_FAILURE, "Unable to add entry %u in " "EFD table\n", i); } printf("EFD table: Adding 0x%x keys\n", num_flows); } /* >8 End of creation EFD table. */ /* Check the link status of all ports in up to 9s, and print them finally */ static void check_all_ports_link_status(uint16_t port_num, uint32_t port_mask) { #define CHECK_INTERVAL 100 /* 100ms */ #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ uint8_t count, all_ports_up, print_flag = 0; uint16_t portid; struct rte_eth_link link; int ret; char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; printf("\nChecking link status"); 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 << info->id[portid])) == 0) continue; memset(&link, 0, sizeof(link)); ret = rte_eth_link_get_nowait(info->id[portid], &link); if (ret < 0) { all_ports_up = 0; if (print_flag == 1) printf("Port %u link get failed: %s\n", portid, rte_strerror(-ret)); continue; } /* print link status if flag set */ if (print_flag == 1) { rte_eth_link_to_str(link_status_text, sizeof(link_status_text), &link); printf("Port %d %s\n", info->id[portid], link_status_text); continue; } /* clear all_ports_up flag if any link down */ if (link.link_status == RTE_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"); } } } /** * Main init function for the multi-process server app, * calls subfunctions to do each stage of the initialisation. */ int init(int argc, char *argv[]) { int retval; const struct rte_memzone *mz; uint8_t i, total_ports; /* init EAL, parsing EAL args */ retval = rte_eal_init(argc, argv); if (retval < 0) return -1; argc -= retval; argv += retval; /* get total number of ports */ total_ports = rte_eth_dev_count_avail(); /* set up array for port data */ mz = rte_memzone_reserve(MZ_SHARED_INFO, sizeof(*info), rte_socket_id(), NO_FLAGS); if (mz == NULL) rte_exit(EXIT_FAILURE, "Cannot reserve memory zone " "for port information\n"); memset(mz->addr, 0, sizeof(*info)); info = mz->addr; /* parse additional, application arguments */ retval = parse_app_args(total_ports, argc, argv); if (retval != 0) return -1; /* initialise mbuf pools */ retval = init_mbuf_pools(); if (retval != 0) rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n"); /* now initialise the ports we will use */ for (i = 0; i < info->num_ports; i++) { retval = init_port(info->id[i]); if (retval != 0) rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n", (unsigned int) i); } check_all_ports_link_status(info->num_ports, (~0x0)); /* initialise the node queues/rings for inter-eu comms */ init_shm_rings(); /* Create the EFD table */ create_efd_table(); /* Populate the EFD table */ populate_efd_table(); /* Share the total number of nodes */ info->num_nodes = num_nodes; /* Share the total number of flows */ info->num_flows = num_flows; return 0; }