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Diffstat (limited to 'examples/vhost_xen/main.c')
| -rw-r--r-- | examples/vhost_xen/main.c | 1522 |
1 files changed, 0 insertions, 1522 deletions
diff --git a/examples/vhost_xen/main.c b/examples/vhost_xen/main.c deleted file mode 100644 index eba4d35a..00000000 --- a/examples/vhost_xen/main.c +++ /dev/null @@ -1,1522 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2015 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 <arpa/inet.h> -#include <getopt.h> -#include <linux/if_ether.h> -#include <linux/if_vlan.h> -#include <linux/virtio_net.h> -#include <linux/virtio_ring.h> -#include <signal.h> -#include <stdint.h> -#include <sys/eventfd.h> -#include <sys/param.h> -#include <unistd.h> - -#include <rte_atomic.h> -#include <rte_cycles.h> -#include <rte_ethdev.h> -#include <rte_log.h> -#include <rte_string_fns.h> -#include <rte_pause.h> - -#include "main.h" -#include "virtio-net.h" -#include "xen_vhost.h" - -#define MAX_QUEUES 128 - -/* the maximum number of external ports supported */ -#define MAX_SUP_PORTS 1 - -/* - * Calculate the number of buffers needed per port - */ -#define NUM_MBUFS_PER_PORT ((MAX_QUEUES*RTE_TEST_RX_DESC_DEFAULT) + \ - (num_switching_cores*MAX_PKT_BURST) + \ - (num_switching_cores*RTE_TEST_TX_DESC_DEFAULT) +\ - (num_switching_cores*MBUF_CACHE_SIZE)) - -#define MBUF_CACHE_SIZE 64 - -/* - * 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 /* Max burst size for RX/TX */ -#define MAX_MRG_PKT_BURST 16 /* Max burst for merge buffers. Set to 1 due to performance issue. */ -#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ - -/* State of virtio device. */ -#define DEVICE_NOT_READY 0 -#define DEVICE_READY 1 -#define DEVICE_SAFE_REMOVE 2 - -/* Config_core_flag status definitions. */ -#define REQUEST_DEV_REMOVAL 1 -#define ACK_DEV_REMOVAL 0 - -/* Configurable number of RX/TX ring descriptors */ -#define RTE_TEST_RX_DESC_DEFAULT 128 -#define RTE_TEST_TX_DESC_DEFAULT 512 - -#define INVALID_PORT_ID 0xFF - -/* Max number of devices. Limited by vmdq. */ -#define MAX_DEVICES 64 - -/* Size of buffers used for snprintfs. */ -#define MAX_PRINT_BUFF 6072 - - -/* Maximum long option length for option parsing. */ -#define MAX_LONG_OPT_SZ 64 - -/* Used to compare MAC addresses. */ -#define MAC_ADDR_CMP 0xFFFFFFFFFFFF - -/* mask of enabled ports */ -static uint32_t enabled_port_mask = 0; - -/*Number of switching cores enabled*/ -static uint32_t num_switching_cores = 0; - -/* number of devices/queues to support*/ -static uint32_t num_queues = 0; -uint32_t num_devices = 0; - -/* Enable VM2VM communications. If this is disabled then the MAC address compare is skipped. */ -static uint32_t enable_vm2vm = 1; -/* Enable stats. */ -static uint32_t enable_stats = 0; - -/* empty vmdq configuration structure. Filled in programatically */ -static const struct rte_eth_conf vmdq_conf_default = { - .rxmode = { - .mq_mode = ETH_MQ_RX_VMDQ_ONLY, - .split_hdr_size = 0, - .header_split = 0, /**< Header Split disabled */ - .hw_ip_checksum = 0, /**< IP checksum offload disabled */ - .hw_vlan_filter = 0, /**< VLAN filtering disabled */ - /* - * It is necessary for 1G NIC such as I350, - * this fixes bug of ipv4 forwarding in guest can't - * forward pakets from one virtio dev to another virtio dev. - */ - .hw_vlan_strip = 1, /**< VLAN strip enabled. */ - .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ - .hw_strip_crc = 1, /**< CRC stripped by hardware */ - }, - - .txmode = { - .mq_mode = ETH_MQ_TX_NONE, - }, - .rx_adv_conf = { - /* - * should be overridden separately in code with - * appropriate values - */ - .vmdq_rx_conf = { - .nb_queue_pools = ETH_8_POOLS, - .enable_default_pool = 0, - .default_pool = 0, - .nb_pool_maps = 0, - .pool_map = {{0, 0},}, - }, - }, -}; - -static unsigned lcore_ids[RTE_MAX_LCORE]; -static uint8_t ports[RTE_MAX_ETHPORTS]; -static unsigned num_ports = 0; /**< The number of ports specified in command line */ - -const uint16_t vlan_tags[] = { - 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, - 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, - 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, - 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, - 1032, 1033, 1034, 1035, 1036, 1037, 1038, 1039, - 1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047, - 1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055, - 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063, -}; - -/* ethernet addresses of ports */ -static struct ether_addr vmdq_ports_eth_addr[RTE_MAX_ETHPORTS]; - -/* heads for the main used and free linked lists for the data path. */ -static struct virtio_net_data_ll *ll_root_used = NULL; -static struct virtio_net_data_ll *ll_root_free = NULL; - -/* Array of data core structures containing information on individual core linked lists. */ -static struct lcore_info lcore_info[RTE_MAX_LCORE]; - -/* Used for queueing bursts of TX packets. */ -struct mbuf_table { - unsigned len; - unsigned txq_id; - struct rte_mbuf *m_table[MAX_PKT_BURST]; -}; - -/* TX queue for each data core. */ -struct mbuf_table lcore_tx_queue[RTE_MAX_LCORE]; - -/* Vlan header struct used to insert vlan tags on TX. */ -struct vlan_ethhdr { - unsigned char h_dest[ETH_ALEN]; - unsigned char h_source[ETH_ALEN]; - __be16 h_vlan_proto; - __be16 h_vlan_TCI; - __be16 h_vlan_encapsulated_proto; -}; - -/* Header lengths. */ -#define VLAN_HLEN 4 -#define VLAN_ETH_HLEN 18 - -/* Per-device statistics struct */ -struct device_statistics { - uint64_t tx_total; - rte_atomic64_t rx_total; - uint64_t tx; - rte_atomic64_t rx; -} __rte_cache_aligned; -struct device_statistics dev_statistics[MAX_DEVICES]; - -/* - * Builds up the correct configuration for VMDQ VLAN pool map - * according to the pool & queue limits. - */ -static inline int -get_eth_conf(struct rte_eth_conf *eth_conf, uint32_t num_devices) -{ - struct rte_eth_vmdq_rx_conf conf; - unsigned i; - - memset(&conf, 0, sizeof(conf)); - conf.nb_queue_pools = (enum rte_eth_nb_pools)num_devices; - conf.nb_pool_maps = num_devices; - - for (i = 0; i < conf.nb_pool_maps; i++) { - conf.pool_map[i].vlan_id = vlan_tags[ i ]; - conf.pool_map[i].pools = (1UL << i); - } - - (void)(rte_memcpy(eth_conf, &vmdq_conf_default, sizeof(*eth_conf))); - (void)(rte_memcpy(ð_conf->rx_adv_conf.vmdq_rx_conf, &conf, - sizeof(eth_conf->rx_adv_conf.vmdq_rx_conf))); - return 0; -} - -/* - * Validate the device number according to the max pool number gotten form dev_info - * If the device number is invalid, give the error message and return -1. - * Each device must have its own pool. - */ -static inline int -validate_num_devices(uint32_t max_nb_devices) -{ - if (num_devices > max_nb_devices) { - RTE_LOG(ERR, VHOST_PORT, "invalid number of devices\n"); - return -1; - } - return 0; -} - -/* - * Initialises a given port using global settings and with the rx buffers - * coming from the mbuf_pool passed as parameter - */ -static inline int -port_init(uint8_t port, struct rte_mempool *mbuf_pool) -{ - struct rte_eth_dev_info dev_info; - struct rte_eth_rxconf *rxconf; - struct rte_eth_conf port_conf; - uint16_t rx_rings, tx_rings = (uint16_t)rte_lcore_count(); - uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT; - uint16_t tx_ring_size = RTE_TEST_TX_DESC_DEFAULT; - int retval; - uint16_t q; - - /* The max pool number from dev_info will be used to validate the pool number specified in cmd line */ - rte_eth_dev_info_get (port, &dev_info); - - /*configure the number of supported virtio devices based on VMDQ limits */ - num_devices = dev_info.max_vmdq_pools; - num_queues = dev_info.max_rx_queues; - - retval = validate_num_devices(MAX_DEVICES); - if (retval < 0) - return retval; - - /* Get port configuration. */ - retval = get_eth_conf(&port_conf, num_devices); - if (retval < 0) - return retval; - - if (port >= rte_eth_dev_count()) return -1; - - rx_rings = (uint16_t)num_queues, - /* Configure ethernet device. */ - retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); - if (retval != 0) - return retval; - - retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rx_ring_size, - &tx_ring_size); - if (retval != 0) - return retval; - if (rx_ring_size > RTE_TEST_RX_DESC_DEFAULT || - tx_ring_size > RTE_TEST_TX_DESC_DEFAULT) { - RTE_LOG(ERR, VHOST_PORT, "Mbuf pool has an insufficient size for " - "port %u.\n", port); - return -1; - } - - rte_eth_dev_info_get(port, &dev_info); - rxconf = &dev_info.default_rxconf; - rxconf->rx_drop_en = 1; - /* Setup the queues. */ - for (q = 0; q < rx_rings; q ++) { - retval = rte_eth_rx_queue_setup(port, q, rx_ring_size, - rte_eth_dev_socket_id(port), rxconf, - mbuf_pool); - if (retval < 0) - return retval; - } - for (q = 0; q < tx_rings; q ++) { - retval = rte_eth_tx_queue_setup(port, q, tx_ring_size, - rte_eth_dev_socket_id(port), - NULL); - if (retval < 0) - return retval; - } - - /* Start the device. */ - retval = rte_eth_dev_start(port); - if (retval < 0) - return retval; - - rte_eth_macaddr_get(port, &vmdq_ports_eth_addr[port]); - RTE_LOG(INFO, VHOST_PORT, "Max virtio devices supported: %u\n", num_devices); - RTE_LOG(INFO, VHOST_PORT, "Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8 - " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n", - (unsigned)port, - vmdq_ports_eth_addr[port].addr_bytes[0], - vmdq_ports_eth_addr[port].addr_bytes[1], - vmdq_ports_eth_addr[port].addr_bytes[2], - vmdq_ports_eth_addr[port].addr_bytes[3], - vmdq_ports_eth_addr[port].addr_bytes[4], - vmdq_ports_eth_addr[port].addr_bytes[5]); - - return 0; -} - -/* - * Parse the portmask provided at run time. - */ -static int -parse_portmask(const char *portmask) -{ - char *end = NULL; - unsigned long pm; - - errno = 0; - - /* parse hexadecimal string */ - pm = strtoul(portmask, &end, 16); - if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) - return -1; - - if (pm == 0) - return -1; - - return pm; - -} - -/* - * Parse num options at run time. - */ -static int -parse_num_opt(const char *q_arg, uint32_t max_valid_value) -{ - char *end = NULL; - unsigned long num; - - errno = 0; - - /* parse unsigned int string */ - num = strtoul(q_arg, &end, 10); - if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) - return -1; - - if (num > max_valid_value) - return -1; - - return num; - -} - -/* - * Display usage - */ -static void -us_vhost_usage(const char *prgname) -{ - RTE_LOG(INFO, VHOST_CONFIG, "%s [EAL options] -- -p PORTMASK --vm2vm [0|1] --stats [0-N] --nb-devices ND\n" - " -p PORTMASK: Set mask for ports to be used by application\n" - " --vm2vm [0|1]: disable/enable(default) vm2vm comms\n" - " --stats [0-N]: 0: Disable stats, N: Time in seconds to print stats\n", - prgname); -} - -/* - * Parse the arguments given in the command line of the application. - */ -static int -us_vhost_parse_args(int argc, char **argv) -{ - int opt, ret; - int option_index; - unsigned i; - const char *prgname = argv[0]; - static struct option long_option[] = { - {"vm2vm", required_argument, NULL, 0}, - {"stats", required_argument, NULL, 0}, - {NULL, 0, 0, 0} - }; - - /* Parse command line */ - while ((opt = getopt_long(argc, argv, "p:",long_option, &option_index)) != EOF) { - switch (opt) { - /* Portmask */ - case 'p': - enabled_port_mask = parse_portmask(optarg); - if (enabled_port_mask == 0) { - RTE_LOG(INFO, VHOST_CONFIG, "Invalid portmask\n"); - us_vhost_usage(prgname); - return -1; - } - break; - - case 0: - /* Enable/disable vm2vm comms. */ - if (!strncmp(long_option[option_index].name, "vm2vm", MAX_LONG_OPT_SZ)) { - ret = parse_num_opt(optarg, 1); - if (ret == -1) { - RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for vm2vm [0|1]\n"); - us_vhost_usage(prgname); - return -1; - } else { - enable_vm2vm = ret; - } - } - - /* Enable/disable stats. */ - if (!strncmp(long_option[option_index].name, "stats", MAX_LONG_OPT_SZ)) { - ret = parse_num_opt(optarg, INT32_MAX); - if (ret == -1) { - RTE_LOG(INFO, VHOST_CONFIG, "Invalid argument for stats [0..N]\n"); - us_vhost_usage(prgname); - return -1; - } else { - enable_stats = ret; - } - } - break; - - /* Invalid option - print options. */ - default: - us_vhost_usage(prgname); - return -1; - } - } - - for (i = 0; i < RTE_MAX_ETHPORTS; i++) { - if (enabled_port_mask & (1 << i)) - ports[num_ports++] = (uint8_t)i; - } - - if ((num_ports == 0) || (num_ports > MAX_SUP_PORTS)) { - RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u," - "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS); - return -1; - } - - return 0; -} - -/* - * Update the global var NUM_PORTS and array PORTS according to system ports number - * and return valid ports number - */ -static unsigned check_ports_num(unsigned nb_ports) -{ - unsigned valid_num_ports = num_ports; - unsigned portid; - - if (num_ports > nb_ports) { - RTE_LOG(INFO, VHOST_PORT, "\nSpecified port number(%u) exceeds total system port number(%u)\n", - num_ports, nb_ports); - num_ports = nb_ports; - } - - for (portid = 0; portid < num_ports; portid ++) { - if (ports[portid] >= nb_ports) { - RTE_LOG(INFO, VHOST_PORT, "\nSpecified port ID(%u) exceeds max system port ID(%u)\n", - ports[portid], (nb_ports - 1)); - ports[portid] = INVALID_PORT_ID; - valid_num_ports--; - } - } - return valid_num_ports; -} - -/* - * Function to convert guest physical addresses to vhost virtual addresses. This - * is used to convert virtio buffer addresses. - */ -static __rte_always_inline uint64_t -gpa_to_vva(struct virtio_net *dev, uint64_t guest_pa) -{ - struct virtio_memory_regions *region; - uint32_t regionidx; - uint64_t vhost_va = 0; - - for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) { - region = &dev->mem->regions[regionidx]; - if ((guest_pa >= region->guest_phys_address) && - (guest_pa <= region->guest_phys_address_end)) { - vhost_va = region->address_offset + guest_pa; - break; - } - } - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") GPA %p| VVA %p\n", - dev->device_fh, (void*)(uintptr_t)guest_pa, (void*)(uintptr_t)vhost_va); - - return vhost_va; -} - -/* - * This function adds buffers to the virtio devices RX virtqueue. Buffers can - * be received from the physical port or from another virtio device. A packet - * count is returned to indicate the number of packets that were successfully - * added to the RX queue. - */ -static __rte_always_inline uint32_t -virtio_dev_rx(struct virtio_net *dev, struct rte_mbuf **pkts, uint32_t count) -{ - struct vhost_virtqueue *vq; - struct vring_desc *desc; - struct rte_mbuf *buff; - /* The virtio_hdr is initialised to 0. */ - struct virtio_net_hdr_mrg_rxbuf virtio_hdr = {{0,0,0,0,0,0},0}; - uint64_t buff_addr = 0; - uint64_t buff_hdr_addr = 0; - uint32_t head[MAX_PKT_BURST], packet_len = 0; - uint32_t head_idx, packet_success = 0; - uint16_t avail_idx, res_cur_idx; - uint16_t res_base_idx, res_end_idx; - uint16_t free_entries; - uint8_t success = 0; - void *userdata; - - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") virtio_dev_rx()\n", dev->device_fh); - vq = dev->virtqueue_rx; - count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count; - /* As many data cores may want access to available buffers, they need to be reserved. */ - do { - - res_base_idx = vq->last_used_idx_res; - - avail_idx = *((volatile uint16_t *)&vq->avail->idx); - - free_entries = (avail_idx - res_base_idx); - - /*check that we have enough buffers*/ - if (unlikely(count > free_entries)) - count = free_entries; - - if (count == 0) - return 0; - - res_end_idx = res_base_idx + count; - /* vq->last_used_idx_res is atomically updated. */ - success = rte_atomic16_cmpset(&vq->last_used_idx_res, res_base_idx, - res_end_idx); - } while (unlikely(success == 0)); - res_cur_idx = res_base_idx; - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") Current Index %d| End Index %d\n", - dev->device_fh, res_cur_idx, res_end_idx); - - /* Prefetch available ring to retrieve indexes. */ - rte_prefetch0(&vq->avail->ring[res_cur_idx & (vq->size - 1)]); - - /* Retrieve all of the head indexes first to avoid caching issues. */ - for (head_idx = 0; head_idx < count; head_idx++) - head[head_idx] = vq->avail->ring[(res_cur_idx + head_idx) & (vq->size - 1)]; - - /*Prefetch descriptor index. */ - rte_prefetch0(&vq->desc[head[packet_success]]); - - while (res_cur_idx != res_end_idx) { - /* Get descriptor from available ring */ - desc = &vq->desc[head[packet_success]]; - /* Prefetch descriptor address. */ - rte_prefetch0(desc); - - buff = pkts[packet_success]; - - /* Convert from gpa to vva (guest physical addr -> vhost virtual addr) */ - buff_addr = gpa_to_vva(dev, desc->addr); - /* Prefetch buffer address. */ - rte_prefetch0((void*)(uintptr_t)buff_addr); - - { - /* Copy virtio_hdr to packet and increment buffer address */ - buff_hdr_addr = buff_addr; - packet_len = rte_pktmbuf_data_len(buff) + vq->vhost_hlen; - - /* - * If the descriptors are chained the header and data are placed in - * separate buffers. - */ - if (desc->flags & VRING_DESC_F_NEXT) { - desc->len = vq->vhost_hlen; - desc = &vq->desc[desc->next]; - /* Buffer address translation. */ - buff_addr = gpa_to_vva(dev, desc->addr); - desc->len = rte_pktmbuf_data_len(buff); - } else { - buff_addr += vq->vhost_hlen; - desc->len = packet_len; - } - } - - /* Update used ring with desc information */ - vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success]; - vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len; - - /* Copy mbuf data to buffer */ - userdata = rte_pktmbuf_mtod(buff, void *); - rte_memcpy((void *)(uintptr_t)buff_addr, userdata, rte_pktmbuf_data_len(buff)); - - res_cur_idx++; - packet_success++; - - /* mergeable is disabled then a header is required per buffer. */ - rte_memcpy((void *)(uintptr_t)buff_hdr_addr, (const void *)&virtio_hdr, vq->vhost_hlen); - if (res_cur_idx < res_end_idx) { - /* Prefetch descriptor index. */ - rte_prefetch0(&vq->desc[head[packet_success]]); - } - } - - rte_compiler_barrier(); - - /* Wait until it's our turn to add our buffer to the used ring. */ - while (unlikely(vq->last_used_idx != res_base_idx)) - rte_pause(); - - *(volatile uint16_t *)&vq->used->idx += count; - - vq->last_used_idx = res_end_idx; - - return count; -} - -/* - * Compares a packet destination MAC address to a device MAC address. - */ -static __rte_always_inline int -ether_addr_cmp(struct ether_addr *ea, struct ether_addr *eb) -{ - return ((*(uint64_t *)ea ^ *(uint64_t *)eb) & MAC_ADDR_CMP) == 0; -} - -/* - * This function registers mac along with a - * vlan tag to a VMDQ. - */ -static int -link_vmdq(struct virtio_net *dev) -{ - int ret; - struct virtio_net_data_ll *dev_ll; - - dev_ll = ll_root_used; - - while (dev_ll != NULL) { - if ((dev != dev_ll->dev) && ether_addr_cmp(&dev->mac_address, &dev_ll->dev->mac_address)) { - RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") WARNING: This device is using an existing MAC address and has not been registered.\n", dev->device_fh); - return -1; - } - dev_ll = dev_ll->next; - } - - /* vlan_tag currently uses the device_id. */ - dev->vlan_tag = vlan_tags[dev->device_fh]; - dev->vmdq_rx_q = dev->device_fh * (num_queues/num_devices); - - /* Print out VMDQ registration info. */ - RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") MAC_ADDRESS %02x:%02x:%02x:%02x:%02x:%02x and VLAN_TAG %d registered\n", - dev->device_fh, - dev->mac_address.addr_bytes[0], dev->mac_address.addr_bytes[1], - dev->mac_address.addr_bytes[2], dev->mac_address.addr_bytes[3], - dev->mac_address.addr_bytes[4], dev->mac_address.addr_bytes[5], - dev->vlan_tag); - - /* Register the MAC address. */ - ret = rte_eth_dev_mac_addr_add(ports[0], &dev->mac_address, (uint32_t)dev->device_fh); - if (ret) { - RTE_LOG(ERR, VHOST_DATA, "(%"PRIu64") Failed to add device MAC address to VMDQ\n", - dev->device_fh); - return -1; - } - - /* Enable stripping of the vlan tag as we handle routing. */ - rte_eth_dev_set_vlan_strip_on_queue(ports[0], dev->vmdq_rx_q, 1); - - rte_compiler_barrier(); - /* Set device as ready for RX. */ - dev->ready = DEVICE_READY; - - return 0; -} - -/* - * Removes MAC address and vlan tag from VMDQ. Ensures that nothing is adding buffers to the RX - * queue before disabling RX on the device. - */ -static inline void -unlink_vmdq(struct virtio_net *dev) -{ - unsigned i = 0; - unsigned rx_count; - struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; - - if (dev->ready == DEVICE_READY) { - /*clear MAC and VLAN settings*/ - rte_eth_dev_mac_addr_remove(ports[0], &dev->mac_address); - for (i = 0; i < 6; i++) - dev->mac_address.addr_bytes[i] = 0; - - dev->vlan_tag = 0; - - /*Clear out the receive buffers*/ - rx_count = rte_eth_rx_burst(ports[0], - (uint16_t)dev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST); - - while (rx_count) { - for (i = 0; i < rx_count; i++) - rte_pktmbuf_free(pkts_burst[i]); - - rx_count = rte_eth_rx_burst(ports[0], - (uint16_t)dev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST); - } - - dev->ready = DEVICE_NOT_READY; - } -} - -/* - * Check if the packet destination MAC address is for a local device. If so then put - * the packet on that devices RX queue. If not then return. - */ -static __rte_always_inline unsigned -virtio_tx_local(struct virtio_net *dev, struct rte_mbuf *m) -{ - struct virtio_net_data_ll *dev_ll; - struct ether_hdr *pkt_hdr; - uint64_t ret = 0; - - pkt_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); - - /*get the used devices list*/ - dev_ll = ll_root_used; - - while (dev_ll != NULL) { - if (likely(dev_ll->dev->ready == DEVICE_READY) && ether_addr_cmp(&(pkt_hdr->d_addr), - &dev_ll->dev->mac_address)) { - - /* Drop the packet if the TX packet is destined for the TX device. */ - if (dev_ll->dev->device_fh == dev->device_fh) { - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: " - "Source and destination MAC addresses are the same. " - "Dropping packet.\n", - dev_ll->dev->device_fh); - return 0; - } - - - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: " - "MAC address is local\n", dev_ll->dev->device_fh); - - if (dev_ll->dev->remove) { - /*drop the packet if the device is marked for removal*/ - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") " - "Device is marked for removal\n", - dev_ll->dev->device_fh); - } else { - /*send the packet to the local virtio device*/ - ret = virtio_dev_rx(dev_ll->dev, &m, 1); - if (enable_stats) { - rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx_total, 1); - rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx, ret); - dev_statistics[dev->device_fh].tx_total++; - dev_statistics[dev->device_fh].tx += ret; - } - } - - return 0; - } - dev_ll = dev_ll->next; - } - - return -1; -} - -/* - * This function routes the TX packet to the correct interface. This may be a local device - * or the physical port. - */ -static __rte_always_inline void -virtio_tx_route(struct virtio_net* dev, struct rte_mbuf *m, struct rte_mempool *mbuf_pool, uint16_t vlan_tag) -{ - struct mbuf_table *tx_q; - struct vlan_ethhdr *vlan_hdr; - struct rte_mbuf **m_table; - struct rte_mbuf *mbuf; - unsigned len, ret; - const uint16_t lcore_id = rte_lcore_id(); - - /*check if destination is local VM*/ - if (enable_vm2vm && (virtio_tx_local(dev, m) == 0)) { - return; - } - - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") TX: " - "MAC address is external\n", dev->device_fh); - - /*Add packet to the port tx queue*/ - tx_q = &lcore_tx_queue[lcore_id]; - len = tx_q->len; - - /* Allocate an mbuf and populate the structure. */ - mbuf = rte_pktmbuf_alloc(mbuf_pool); - if(!mbuf) - return; - - mbuf->data_len = m->data_len + VLAN_HLEN; - mbuf->pkt_len = mbuf->data_len; - - /* Copy ethernet header to mbuf. */ - rte_memcpy(rte_pktmbuf_mtod(mbuf, void*), - rte_pktmbuf_mtod(m, const void*), ETH_HLEN); - - - /* Setup vlan header. Bytes need to be re-ordered for network with htons()*/ - vlan_hdr = rte_pktmbuf_mtod(mbuf, struct vlan_ethhdr *); - vlan_hdr->h_vlan_encapsulated_proto = vlan_hdr->h_vlan_proto; - vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); - vlan_hdr->h_vlan_TCI = htons(vlan_tag); - - /* Copy the remaining packet contents to the mbuf. */ - rte_memcpy(rte_pktmbuf_mtod_offset(mbuf, void *, VLAN_ETH_HLEN), - rte_pktmbuf_mtod_offset(m, const void *, ETH_HLEN), - (m->data_len - ETH_HLEN)); - tx_q->m_table[len] = mbuf; - len++; - if (enable_stats) { - dev_statistics[dev->device_fh].tx_total++; - dev_statistics[dev->device_fh].tx++; - } - - if (unlikely(len == MAX_PKT_BURST)) { - m_table = (struct rte_mbuf **)tx_q->m_table; - ret = rte_eth_tx_burst(ports[0], (uint16_t)tx_q->txq_id, m_table, (uint16_t) len); - /* Free any buffers not handled by TX and update the port stats. */ - if (unlikely(ret < len)) { - do { - rte_pktmbuf_free(m_table[ret]); - } while (++ret < len); - } - - len = 0; - } - - tx_q->len = len; - return; -} - -static __rte_always_inline void -virtio_dev_tx(struct virtio_net* dev, struct rte_mempool *mbuf_pool) -{ - struct rte_mbuf m; - struct vhost_virtqueue *vq; - struct vring_desc *desc; - uint64_t buff_addr = 0; - uint32_t head[MAX_PKT_BURST]; - uint32_t used_idx; - uint32_t i; - uint16_t free_entries, packet_success = 0; - uint16_t avail_idx; - - vq = dev->virtqueue_tx; - avail_idx = *((volatile uint16_t *)&vq->avail->idx); - - /* If there are no available buffers then return. */ - if (vq->last_used_idx == avail_idx) - return; - - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") virtio_dev_tx()\n", - dev->device_fh); - - /* Prefetch available ring to retrieve head indexes. */ - rte_prefetch0(&vq->avail->ring[vq->last_used_idx & (vq->size - 1)]); - - /*get the number of free entries in the ring*/ - free_entries = avail_idx - vq->last_used_idx; - free_entries = unlikely(free_entries < MAX_PKT_BURST) ? free_entries : MAX_PKT_BURST; - - RTE_LOG_DP(DEBUG, VHOST_DATA, "(%" PRIu64 ") Buffers available %d\n", - dev->device_fh, free_entries); - /* Retrieve all of the head indexes first to avoid caching issues. */ - for (i = 0; i < free_entries; i++) - head[i] = vq->avail->ring[(vq->last_used_idx + i) & (vq->size - 1)]; - - /* Prefetch descriptor index. */ - rte_prefetch0(&vq->desc[head[packet_success]]); - - while (packet_success < free_entries) { - desc = &vq->desc[head[packet_success]]; - /* Prefetch descriptor address. */ - rte_prefetch0(desc); - - if (packet_success < (free_entries - 1)) { - /* Prefetch descriptor index. */ - rte_prefetch0(&vq->desc[head[packet_success+1]]); - } - - /* Update used index buffer information. */ - used_idx = vq->last_used_idx & (vq->size - 1); - vq->used->ring[used_idx].id = head[packet_success]; - vq->used->ring[used_idx].len = 0; - - /* Discard first buffer as it is the virtio header */ - desc = &vq->desc[desc->next]; - - /* Buffer address translation. */ - buff_addr = gpa_to_vva(dev, desc->addr); - /* Prefetch buffer address. */ - rte_prefetch0((void*)(uintptr_t)buff_addr); - - /* Setup dummy mbuf. This is copied to a real mbuf if transmitted out the physical port. */ - m.data_len = desc->len; - m.data_off = 0; - m.nb_segs = 1; - - virtio_tx_route(dev, &m, mbuf_pool, 0); - - vq->last_used_idx++; - packet_success++; - } - - rte_compiler_barrier(); - vq->used->idx += packet_success; - /* Kick guest if required. */ -} - -/* - * This function is called by each data core. It handles all RX/TX registered with the - * core. For TX the specific lcore linked list is used. For RX, MAC addresses are compared - * with all devices in the main linked list. - */ -static int -switch_worker(__attribute__((unused)) void *arg) -{ - struct rte_mempool *mbuf_pool = arg; - struct virtio_net *dev = NULL; - struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; - struct virtio_net_data_ll *dev_ll; - struct mbuf_table *tx_q; - volatile struct lcore_ll_info *lcore_ll; - const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; - uint64_t prev_tsc, diff_tsc, cur_tsc, ret_count = 0; - unsigned ret, i; - const uint16_t lcore_id = rte_lcore_id(); - const uint16_t num_cores = (uint16_t)rte_lcore_count(); - uint16_t rx_count = 0; - - RTE_LOG(INFO, VHOST_DATA, "Procesing on Core %u started \n", lcore_id); - lcore_ll = lcore_info[lcore_id].lcore_ll; - prev_tsc = 0; - - tx_q = &lcore_tx_queue[lcore_id]; - for (i = 0; i < num_cores; i ++) { - if (lcore_ids[i] == lcore_id) { - tx_q->txq_id = i; - break; - } - } - - while(1) { - cur_tsc = rte_rdtsc(); - /* - * TX burst queue drain - */ - diff_tsc = cur_tsc - prev_tsc; - if (unlikely(diff_tsc > drain_tsc)) { - - if (tx_q->len) { - RTE_LOG_DP(DEBUG, VHOST_DATA, - "TX queue drained after timeout with burst size %u\n", - tx_q->len); - - /*Tx any packets in the queue*/ - ret = rte_eth_tx_burst(ports[0], (uint16_t)tx_q->txq_id, - (struct rte_mbuf **)tx_q->m_table, - (uint16_t)tx_q->len); - if (unlikely(ret < tx_q->len)) { - do { - rte_pktmbuf_free(tx_q->m_table[ret]); - } while (++ret < tx_q->len); - } - - tx_q->len = 0; - } - - prev_tsc = cur_tsc; - - } - - /* - * Inform the configuration core that we have exited the linked list and that no devices are - * in use if requested. - */ - if (lcore_ll->dev_removal_flag == REQUEST_DEV_REMOVAL) - lcore_ll->dev_removal_flag = ACK_DEV_REMOVAL; - - /* - * Process devices - */ - dev_ll = lcore_ll->ll_root_used; - - while (dev_ll != NULL) { - /*get virtio device ID*/ - dev = dev_ll->dev; - - if (unlikely(dev->remove)) { - dev_ll = dev_ll->next; - unlink_vmdq(dev); - dev->ready = DEVICE_SAFE_REMOVE; - continue; - } - if (likely(dev->ready == DEVICE_READY)) { - /*Handle guest RX*/ - rx_count = rte_eth_rx_burst(ports[0], - (uint16_t)dev->vmdq_rx_q, pkts_burst, MAX_PKT_BURST); - - if (rx_count) { - ret_count = virtio_dev_rx(dev, pkts_burst, rx_count); - if (enable_stats) { - rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx_total, rx_count); - rte_atomic64_add(&dev_statistics[dev_ll->dev->device_fh].rx, ret_count); - } - while (likely(rx_count)) { - rx_count--; - rte_pktmbuf_free_seg(pkts_burst[rx_count]); - } - - } - } - - if (likely(!dev->remove)) - /*Handle guest TX*/ - virtio_dev_tx(dev, mbuf_pool); - - /*move to the next device in the list*/ - dev_ll = dev_ll->next; - } - } - - return 0; -} - -/* - * Add an entry to a used linked list. A free entry must first be found in the free linked list - * using get_data_ll_free_entry(); - */ -static void -add_data_ll_entry(struct virtio_net_data_ll **ll_root_addr, struct virtio_net_data_ll *ll_dev) -{ - struct virtio_net_data_ll *ll = *ll_root_addr; - - /* Set next as NULL and use a compiler barrier to avoid reordering. */ - ll_dev->next = NULL; - rte_compiler_barrier(); - - /* If ll == NULL then this is the first device. */ - if (ll) { - /* Increment to the tail of the linked list. */ - while ((ll->next != NULL) ) - ll = ll->next; - - ll->next = ll_dev; - } else { - *ll_root_addr = ll_dev; - } -} - -/* - * Remove an entry from a used linked list. The entry must then be added to the free linked list - * using put_data_ll_free_entry(). - */ -static void -rm_data_ll_entry(struct virtio_net_data_ll **ll_root_addr, struct virtio_net_data_ll *ll_dev, struct virtio_net_data_ll *ll_dev_last) -{ - struct virtio_net_data_ll *ll = *ll_root_addr; - - if (ll_dev == ll) - *ll_root_addr = ll_dev->next; - else - ll_dev_last->next = ll_dev->next; -} - -/* - * Find and return an entry from the free linked list. - */ -static struct virtio_net_data_ll * -get_data_ll_free_entry(struct virtio_net_data_ll **ll_root_addr) -{ - struct virtio_net_data_ll *ll_free = *ll_root_addr; - struct virtio_net_data_ll *ll_dev; - - if (ll_free == NULL) - return NULL; - - ll_dev = ll_free; - *ll_root_addr = ll_free->next; - - return ll_dev; -} - -/* - * Place an entry back on to the free linked list. - */ -static void -put_data_ll_free_entry(struct virtio_net_data_ll **ll_root_addr, struct virtio_net_data_ll *ll_dev) -{ - struct virtio_net_data_ll *ll_free = *ll_root_addr; - - ll_dev->next = ll_free; - *ll_root_addr = ll_dev; -} - -/* - * Creates a linked list of a given size. - */ -static struct virtio_net_data_ll * -alloc_data_ll(uint32_t size) -{ - struct virtio_net_data_ll *ll_new; - uint32_t i; - - /* Malloc and then chain the linked list. */ - ll_new = malloc(size * sizeof(struct virtio_net_data_ll)); - if (ll_new == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, "Failed to allocate memory for ll_new.\n"); - return NULL; - } - - for (i = 0; i < size - 1; i++) { - ll_new[i].dev = NULL; - ll_new[i].next = &ll_new[i+1]; - } - ll_new[i].next = NULL; - - return ll_new; -} - -/* - * Create the main linked list along with each individual cores linked list. A used and a free list - * are created to manage entries. - */ -static int -init_data_ll (void) -{ - int lcore; - - RTE_LCORE_FOREACH_SLAVE(lcore) { - lcore_info[lcore].lcore_ll = malloc(sizeof(struct lcore_ll_info)); - if (lcore_info[lcore].lcore_ll == NULL) { - RTE_LOG(ERR, VHOST_CONFIG, "Failed to allocate memory for lcore_ll.\n"); - return -1; - } - - lcore_info[lcore].lcore_ll->device_num = 0; - lcore_info[lcore].lcore_ll->dev_removal_flag = ACK_DEV_REMOVAL; - lcore_info[lcore].lcore_ll->ll_root_used = NULL; - if (num_devices % num_switching_cores) - lcore_info[lcore].lcore_ll->ll_root_free = alloc_data_ll((num_devices / num_switching_cores) + 1); - else - lcore_info[lcore].lcore_ll->ll_root_free = alloc_data_ll(num_devices / num_switching_cores); - } - - /* Allocate devices up to a maximum of MAX_DEVICES. */ - ll_root_free = alloc_data_ll(MIN((num_devices), MAX_DEVICES)); - - return 0; -} -/* - * Remove a device from the specific data core linked list and from the main linked list. The - * rx/tx thread must be set the flag to indicate that it is safe to remove the device. - * used. - */ -static void -destroy_device (volatile struct virtio_net *dev) -{ - struct virtio_net_data_ll *ll_lcore_dev_cur; - struct virtio_net_data_ll *ll_main_dev_cur; - struct virtio_net_data_ll *ll_lcore_dev_last = NULL; - struct virtio_net_data_ll *ll_main_dev_last = NULL; - int lcore; - - dev->flags &= ~VIRTIO_DEV_RUNNING; - - /*set the remove flag. */ - dev->remove = 1; - - while(dev->ready != DEVICE_SAFE_REMOVE) { - rte_pause(); - } - - /* Search for entry to be removed from lcore ll */ - ll_lcore_dev_cur = lcore_info[dev->coreid].lcore_ll->ll_root_used; - while (ll_lcore_dev_cur != NULL) { - if (ll_lcore_dev_cur->dev == dev) { - break; - } else { - ll_lcore_dev_last = ll_lcore_dev_cur; - ll_lcore_dev_cur = ll_lcore_dev_cur->next; - } - } - - /* Search for entry to be removed from main ll */ - ll_main_dev_cur = ll_root_used; - ll_main_dev_last = NULL; - while (ll_main_dev_cur != NULL) { - if (ll_main_dev_cur->dev == dev) { - break; - } else { - ll_main_dev_last = ll_main_dev_cur; - ll_main_dev_cur = ll_main_dev_cur->next; - } - } - - if (ll_lcore_dev_cur == NULL || ll_main_dev_cur == NULL) { - RTE_LOG(ERR, XENHOST, "%s: could find device in per_cpu list or main_list\n", __func__); - return; - } - - /* Remove entries from the lcore and main ll. */ - rm_data_ll_entry(&lcore_info[ll_lcore_dev_cur->dev->coreid].lcore_ll->ll_root_used, ll_lcore_dev_cur, ll_lcore_dev_last); - rm_data_ll_entry(&ll_root_used, ll_main_dev_cur, ll_main_dev_last); - - /* Set the dev_removal_flag on each lcore. */ - RTE_LCORE_FOREACH_SLAVE(lcore) { - lcore_info[lcore].lcore_ll->dev_removal_flag = REQUEST_DEV_REMOVAL; - } - - /* - * Once each core has set the dev_removal_flag to ACK_DEV_REMOVAL we can be sure that - * they can no longer access the device removed from the linked lists and that the devices - * are no longer in use. - */ - RTE_LCORE_FOREACH_SLAVE(lcore) { - while (lcore_info[lcore].lcore_ll->dev_removal_flag != ACK_DEV_REMOVAL) { - rte_pause(); - } - } - - /* Add the entries back to the lcore and main free ll.*/ - put_data_ll_free_entry(&lcore_info[ll_lcore_dev_cur->dev->coreid].lcore_ll->ll_root_free, ll_lcore_dev_cur); - put_data_ll_free_entry(&ll_root_free, ll_main_dev_cur); - - /* Decrement number of device on the lcore. */ - lcore_info[ll_lcore_dev_cur->dev->coreid].lcore_ll->device_num--; - - RTE_LOG(INFO, VHOST_DATA, " #####(%"PRIu64") Device has been removed from data core\n", dev->device_fh); -} - -/* - * A new device is added to a data core. First the device is added to the main linked list - * and the allocated to a specific data core. - */ -static int -new_device (struct virtio_net *dev) -{ - struct virtio_net_data_ll *ll_dev; - int lcore, core_add = 0; - uint32_t device_num_min = num_devices; - - /* Add device to main ll */ - ll_dev = get_data_ll_free_entry(&ll_root_free); - if (ll_dev == NULL) { - RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") No free entry found in linked list. Device limit " - "of %d devices per core has been reached\n", - dev->device_fh, num_devices); - return -1; - } - ll_dev->dev = dev; - add_data_ll_entry(&ll_root_used, ll_dev); - - /*reset ready flag*/ - dev->ready = DEVICE_NOT_READY; - dev->remove = 0; - - /* Find a suitable lcore to add the device. */ - RTE_LCORE_FOREACH_SLAVE(lcore) { - if (lcore_info[lcore].lcore_ll->device_num < device_num_min) { - device_num_min = lcore_info[lcore].lcore_ll->device_num; - core_add = lcore; - } - } - /* Add device to lcore ll */ - ll_dev->dev->coreid = core_add; - ll_dev = get_data_ll_free_entry(&lcore_info[ll_dev->dev->coreid].lcore_ll->ll_root_free); - if (ll_dev == NULL) { - RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") Failed to add device to data core\n", dev->device_fh); - destroy_device(dev); - return -1; - } - ll_dev->dev = dev; - add_data_ll_entry(&lcore_info[ll_dev->dev->coreid].lcore_ll->ll_root_used, ll_dev); - - /* Initialize device stats */ - memset(&dev_statistics[dev->device_fh], 0, sizeof(struct device_statistics)); - - lcore_info[ll_dev->dev->coreid].lcore_ll->device_num++; - dev->flags |= VIRTIO_DEV_RUNNING; - - RTE_LOG(INFO, VHOST_DATA, "(%"PRIu64") Device has been added to data core %d\n", dev->device_fh, dev->coreid); - - link_vmdq(dev); - - return 0; -} - -/* - * These callback allow devices to be added to the data core when configuration - * has been fully complete. - */ -static const struct virtio_net_device_ops virtio_net_device_ops = -{ - .new_device = new_device, - .destroy_device = destroy_device, -}; - -/* - * This is a thread will wake up after a period to print stats if the user has - * enabled them. - */ -static void -print_stats(void) -{ - struct virtio_net_data_ll *dev_ll; - uint64_t tx_dropped, rx_dropped; - uint64_t tx, tx_total, rx, rx_total; - uint32_t device_fh; - const char clr[] = { 27, '[', '2', 'J', '\0' }; - const char top_left[] = { 27, '[', '1', ';', '1', 'H','\0' }; - - while(1) { - sleep(enable_stats); - - /* Clear screen and move to top left */ - printf("%s%s", clr, top_left); - - printf("\nDevice statistics ===================================="); - - dev_ll = ll_root_used; - while (dev_ll != NULL) { - device_fh = (uint32_t)dev_ll->dev->device_fh; - tx_total = dev_statistics[device_fh].tx_total; - tx = dev_statistics[device_fh].tx; - tx_dropped = tx_total - tx; - rx_total = rte_atomic64_read(&dev_statistics[device_fh].rx_total); - rx = rte_atomic64_read(&dev_statistics[device_fh].rx); - rx_dropped = rx_total - rx; - - printf("\nStatistics for device %"PRIu32" ------------------------------" - "\nTX total: %"PRIu64"" - "\nTX dropped: %"PRIu64"" - "\nTX successful: %"PRIu64"" - "\nRX total: %"PRIu64"" - "\nRX dropped: %"PRIu64"" - "\nRX successful: %"PRIu64"", - device_fh, - tx_total, - tx_dropped, - tx, - rx_total, - rx_dropped, - rx); - - dev_ll = dev_ll->next; - } - printf("\n======================================================\n"); - } -} - - -int init_virtio_net(struct virtio_net_device_ops const * const ops); - -/* - * Main function, does initialisation and calls the per-lcore functions. - */ -int -main(int argc, char *argv[]) -{ - struct rte_mempool *mbuf_pool; - unsigned lcore_id, core_id = 0; - unsigned nb_ports, valid_num_ports; - int ret; - uint8_t portid; - static pthread_t tid; - char thread_name[RTE_MAX_THREAD_NAME_LEN]; - - /* init EAL */ - ret = rte_eal_init(argc, argv); - if (ret < 0) - rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); - argc -= ret; - argv += ret; - - /* parse app arguments */ - ret = us_vhost_parse_args(argc, argv); - if (ret < 0) - rte_exit(EXIT_FAILURE, "Invalid argument\n"); - - for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id ++) - if (rte_lcore_is_enabled(lcore_id)) - lcore_ids[core_id ++] = lcore_id; - - if (rte_lcore_count() > RTE_MAX_LCORE) - rte_exit(EXIT_FAILURE,"Not enough cores\n"); - - /*set the number of swithcing cores available*/ - num_switching_cores = rte_lcore_count()-1; - - /* Get the number of physical ports. */ - nb_ports = rte_eth_dev_count(); - - /* - * Update the global var NUM_PORTS and global array PORTS - * and get value of var VALID_NUM_PORTS according to system ports number - */ - valid_num_ports = check_ports_num(nb_ports); - - if ((valid_num_ports == 0) || (valid_num_ports > MAX_SUP_PORTS)) { - RTE_LOG(INFO, VHOST_PORT, "Current enabled port number is %u," - "but only %u port can be enabled\n",num_ports, MAX_SUP_PORTS); - return -1; - } - - /* Create the mbuf pool. */ - mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", - NUM_MBUFS_PER_PORT * valid_num_ports, MBUF_CACHE_SIZE, 0, - RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); - if (mbuf_pool == NULL) - rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); - - /* initialize all ports */ - for (portid = 0; portid < nb_ports; portid++) { - /* skip ports that are not enabled */ - if ((enabled_port_mask & (1 << portid)) == 0) { - RTE_LOG(INFO, VHOST_PORT, "Skipping disabled port %d\n", portid); - continue; - } - if (port_init(portid, mbuf_pool) != 0) - rte_exit(EXIT_FAILURE, "Cannot initialize network ports\n"); - } - - /* Initialise all linked lists. */ - if (init_data_ll() == -1) - rte_exit(EXIT_FAILURE, "Failed to initialize linked list\n"); - - /* Initialize device stats */ - memset(&dev_statistics, 0, sizeof(dev_statistics)); - - /* Enable stats if the user option is set. */ - if (enable_stats) { - ret = pthread_create(&tid, NULL, (void *)print_stats, NULL); - if (ret != 0) - rte_exit(EXIT_FAILURE, - "Cannot create print-stats thread\n"); - - /* Set thread_name for aid in debugging. */ - snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN, "print-xen-stats"); - ret = rte_thread_setname(tid, thread_name); - if (ret != 0) - RTE_LOG(DEBUG, VHOST_CONFIG, - "Cannot set print-stats name\n"); - } - - /* Launch all data cores. */ - RTE_LCORE_FOREACH_SLAVE(lcore_id) { - rte_eal_remote_launch(switch_worker, mbuf_pool, lcore_id); - } - - init_virtio_xen(&virtio_net_device_ops); - - virtio_monitor_loop(); - return 0; -} |