From b63264c8342e6a1b6971c79550d2af2024b6a4de Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Tue, 14 Aug 2018 18:52:30 +0100 Subject: New upstream version 18.08 Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a Signed-off-by: Luca Boccassi --- drivers/net/virtio/meson.build | 27 + drivers/net/virtio/virtio_ethdev.c | 240 +++++--- drivers/net/virtio/virtio_ethdev.h | 11 +- drivers/net/virtio/virtio_pci.h | 12 +- drivers/net/virtio/virtio_rxtx.c | 698 ++++++++++++++++++---- drivers/net/virtio/virtio_rxtx_simple.c | 67 --- drivers/net/virtio/virtio_rxtx_simple.h | 49 -- drivers/net/virtio/virtio_user/vhost_kernel.c | 86 ++- drivers/net/virtio/virtio_user/vhost_kernel_tap.c | 14 +- drivers/net/virtio/virtio_user/vhost_kernel_tap.h | 3 +- drivers/net/virtio/virtio_user/vhost_user.c | 76 ++- drivers/net/virtio/virtio_user/virtio_user_dev.c | 201 +++++-- drivers/net/virtio/virtio_user/virtio_user_dev.h | 12 +- drivers/net/virtio/virtio_user_ethdev.c | 158 ++++- drivers/net/virtio/virtqueue.c | 8 + drivers/net/virtio/virtqueue.h | 2 + 16 files changed, 1230 insertions(+), 434 deletions(-) create mode 100644 drivers/net/virtio/meson.build (limited to 'drivers/net/virtio') diff --git a/drivers/net/virtio/meson.build b/drivers/net/virtio/meson.build new file mode 100644 index 00000000..e43ce6bb --- /dev/null +++ b/drivers/net/virtio/meson.build @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Intel Corporation + +allow_experimental_apis = true +sources += files('virtio_ethdev.c', + 'virtio_pci.c', + 'virtio_rxtx.c', + 'virtio_rxtx_simple.c', + 'virtqueue.c') +deps += ['kvargs', 'bus_pci'] + +if arch_subdir == 'x86' + sources += files('virtio_rxtx_simple_sse.c') +elif arch_subdir == 'arm' and host_machine.cpu_family().startswith('aarch64') + sources += files('virtio_rxtx_simple_neon.c') +endif + +if host_machine.system() == 'linux' + dpdk_conf.set('RTE_VIRTIO_USER', 1) + + sources += files('virtio_user_ethdev.c', + 'virtio_user/vhost_kernel.c', + 'virtio_user/vhost_kernel_tap.c', + 'virtio_user/vhost_user.c', + 'virtio_user/virtio_user_dev.c') + deps += ['bus_vdev'] +endif diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index 884f74ad..614357da 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -29,6 +28,7 @@ #include #include #include +#include #include "virtio_ethdev.h" #include "virtio_pci.h" @@ -68,7 +68,7 @@ static int virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, uint32_t index, uint32_t vmdq); static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); -static void virtio_mac_addr_set(struct rte_eth_dev *dev, +static int virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr); static int virtio_intr_enable(struct rte_eth_dev *dev); @@ -392,8 +392,8 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) size, vq->vq_ring_size); mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, - SOCKET_ID_ANY, - 0, VIRTIO_PCI_VRING_ALIGN); + SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG, + VIRTIO_PCI_VRING_ALIGN); if (mz == NULL) { if (rte_errno == EEXIST) mz = rte_memzone_lookup(vq_name); @@ -418,8 +418,8 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", dev->data->port_id, vtpci_queue_idx); hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, - SOCKET_ID_ANY, 0, - RTE_CACHE_LINE_SIZE); + SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG, + RTE_CACHE_LINE_SIZE); if (hdr_mz == NULL) { if (rte_errno == EEXIST) hdr_mz = rte_memzone_lookup(vq_hdr_name); @@ -774,46 +774,6 @@ static const struct eth_dev_ops virtio_eth_dev_ops = { .mac_addr_set = virtio_mac_addr_set, }; -static inline int -virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev, - struct rte_eth_link *link) -{ - struct rte_eth_link *dst = link; - struct rte_eth_link *src = &(dev->data->dev_link); - - if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst, - *(uint64_t *)src) == 0) - return -1; - - return 0; -} - -/** - * Atomically writes the link status information into global - * structure rte_eth_dev. - * - * @param dev - * - Pointer to the structure rte_eth_dev to read from. - * - Pointer to the buffer to be saved with the link status. - * - * @return - * - On success, zero. - * - On failure, negative value. - */ -static inline int -virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev, - struct rte_eth_link *link) -{ - struct rte_eth_link *dst = &(dev->data->dev_link); - struct rte_eth_link *src = link; - - if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst, - *(uint64_t *)src) == 0) - return -1; - - return 0; -} - static void virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) { @@ -1097,7 +1057,7 @@ virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) virtio_mac_table_set(hw, uc, mc); } -static void +static int virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) { struct virtio_hw *hw = dev->data->dev_private; @@ -1113,9 +1073,14 @@ virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN); - virtio_send_command(hw->cvq, &ctrl, &len, 1); - } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) - virtio_set_hwaddr(hw); + return virtio_send_command(hw->cvq, &ctrl, &len, 1); + } + + if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) + return -ENOTSUP; + + virtio_set_hwaddr(hw); + return 0; } static int @@ -1273,9 +1238,16 @@ static void virtio_notify_peers(struct rte_eth_dev *dev) { struct virtio_hw *hw = dev->data->dev_private; - struct virtnet_rx *rxvq = dev->data->rx_queues[0]; + struct virtnet_rx *rxvq; struct rte_mbuf *rarp_mbuf; + if (!dev->data->rx_queues) + return; + + rxvq = dev->data->rx_queues[0]; + if (!rxvq) + return; + rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, (struct ether_addr *)hw->mac_addr); if (rarp_mbuf == NULL) { @@ -1333,7 +1305,8 @@ virtio_interrupt_handler(void *param) if (isr & VIRTIO_NET_S_ANNOUNCE) { virtio_notify_peers(dev); - virtio_ack_link_announce(dev); + if (hw->cvq) + virtio_ack_link_announce(dev); } } @@ -1347,6 +1320,11 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev) PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", eth_dev->data->port_id); eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; + } else if (hw->use_inorder_rx) { + PMD_INIT_LOG(INFO, + "virtio: using inorder mergeable buffer Rx path on port %u", + eth_dev->data->port_id); + eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder; } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { PMD_INIT_LOG(INFO, "virtio: using mergeable buffer Rx path on port %u", @@ -1358,10 +1336,10 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev) eth_dev->rx_pkt_burst = &virtio_recv_pkts; } - if (hw->use_simple_tx) { - PMD_INIT_LOG(INFO, "virtio: using simple Tx path on port %u", + if (hw->use_inorder_tx) { + PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", eth_dev->data->port_id); - eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple; + eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; } else { PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", eth_dev->data->port_id); @@ -1744,9 +1722,51 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) return 0; } +static int vdpa_check_handler(__rte_unused const char *key, + const char *value, __rte_unused void *opaque) +{ + if (strcmp(value, "1")) + return -1; + + return 0; +} + +static int +vdpa_mode_selected(struct rte_devargs *devargs) +{ + struct rte_kvargs *kvlist; + const char *key = "vdpa"; + int ret = 0; + + if (devargs == NULL) + return 0; + + kvlist = rte_kvargs_parse(devargs->args, NULL); + if (kvlist == NULL) + return 0; + + if (!rte_kvargs_count(kvlist, key)) + goto exit; + + /* vdpa mode selected when there's a key-value pair: vdpa=1 */ + if (rte_kvargs_process(kvlist, key, + vdpa_check_handler, NULL) < 0) { + goto exit; + } + ret = 1; + +exit: + rte_kvargs_free(kvlist); + return ret; +} + static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, struct rte_pci_device *pci_dev) { + /* virtio pmd skips probe if device needs to work in vdpa mode */ + if (vdpa_mode_selected(pci_dev->device.devargs)) + return 1; + return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), eth_virtio_dev_init); } @@ -1766,9 +1786,7 @@ static struct rte_pci_driver rte_virtio_pmd = { .remove = eth_virtio_pci_remove, }; -RTE_INIT(rte_virtio_pmd_init); -static void -rte_virtio_pmd_init(void) +RTE_INIT(rte_virtio_pmd_init) { if (rte_eal_iopl_init() != 0) { PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); @@ -1778,6 +1796,22 @@ rte_virtio_pmd_init(void) rte_pci_register(&rte_virtio_pmd); } +static bool +rx_offload_enabled(struct virtio_hw *hw) +{ + return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || + vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || + vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); +} + +static bool +tx_offload_enabled(struct virtio_hw *hw) +{ + return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || + vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || + vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); +} + /* * Configure virtio device * It returns 0 on success. @@ -1786,7 +1820,10 @@ static int virtio_dev_configure(struct rte_eth_dev *dev) { const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; + const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; struct virtio_hw *hw = dev->data->dev_private; + uint64_t rx_offloads = rxmode->offloads; + uint64_t tx_offloads = txmode->offloads; uint64_t req_features; int ret; @@ -1799,18 +1836,24 @@ virtio_dev_configure(struct rte_eth_dev *dev) return ret; } - /* The name hw_ip_checksum is a bit confusing since it can be - * set by the application to request L3 and/or L4 checksums. In - * case of virtio, only L4 checksum is supported. - */ - if (rxmode->hw_ip_checksum) + if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | + DEV_RX_OFFLOAD_TCP_CKSUM)) req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); - if (rxmode->enable_lro) + if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) req_features |= (1ULL << VIRTIO_NET_F_GUEST_TSO4) | (1ULL << VIRTIO_NET_F_GUEST_TSO6); + if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | + DEV_TX_OFFLOAD_TCP_CKSUM)) + req_features |= (1ULL << VIRTIO_NET_F_CSUM); + + if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) + req_features |= + (1ULL << VIRTIO_NET_F_HOST_TSO4) | + (1ULL << VIRTIO_NET_F_HOST_TSO6); + /* if request features changed, reinit the device */ if (req_features != hw->req_guest_features) { ret = virtio_init_device(dev, req_features); @@ -1818,14 +1861,15 @@ virtio_dev_configure(struct rte_eth_dev *dev) return ret; } - if (rxmode->hw_ip_checksum && + if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | + DEV_RX_OFFLOAD_TCP_CKSUM)) && !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { PMD_DRV_LOG(ERR, "rx checksum not available on this host"); return -ENOTSUP; } - if (rxmode->enable_lro && + if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { PMD_DRV_LOG(ERR, @@ -1837,15 +1881,19 @@ virtio_dev_configure(struct rte_eth_dev *dev) if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) virtio_dev_cq_start(dev); - hw->vlan_strip = rxmode->hw_vlan_strip; + if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) + hw->vlan_strip = 1; - if (rxmode->hw_vlan_filter + if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { PMD_DRV_LOG(ERR, "vlan filtering not available on this host"); return -ENOTSUP; } + hw->has_tx_offload = tx_offload_enabled(hw); + hw->has_rx_offload = rx_offload_enabled(hw); + if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) /* Enable vector (0) for Link State Intrerrupt */ if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == @@ -1857,20 +1905,30 @@ virtio_dev_configure(struct rte_eth_dev *dev) rte_spinlock_init(&hw->state_lock); hw->use_simple_rx = 1; - hw->use_simple_tx = 1; + + if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { + hw->use_inorder_tx = 1; + if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { + hw->use_inorder_rx = 1; + hw->use_simple_rx = 0; + } else { + hw->use_inorder_rx = 0; + } + } #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { hw->use_simple_rx = 0; - hw->use_simple_tx = 0; } #endif if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { - hw->use_simple_rx = 0; - hw->use_simple_tx = 0; + hw->use_simple_rx = 0; } - if (rxmode->hw_ip_checksum) + if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | + DEV_RX_OFFLOAD_TCP_CKSUM | + DEV_RX_OFFLOAD_TCP_LRO | + DEV_RX_OFFLOAD_VLAN_STRIP)) hw->use_simple_rx = 0; return 0; @@ -2028,21 +2086,21 @@ virtio_dev_stop(struct rte_eth_dev *dev) hw->started = 0; memset(&link, 0, sizeof(link)); - virtio_dev_atomic_write_link_status(dev, &link); + rte_eth_linkstatus_set(dev, &link); rte_spinlock_unlock(&hw->state_lock); } static int virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) { - struct rte_eth_link link, old; + struct rte_eth_link link; uint16_t status; struct virtio_hw *hw = dev->data->dev_private; + memset(&link, 0, sizeof(link)); - virtio_dev_atomic_read_link_status(dev, &link); - old = link; link.link_duplex = ETH_LINK_FULL_DUPLEX; link.link_speed = ETH_SPEED_NUM_10G; + link.link_autoneg = ETH_LINK_FIXED; if (hw->started == 0) { link.link_status = ETH_LINK_DOWN; @@ -2063,9 +2121,8 @@ virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complet } else { link.link_status = ETH_LINK_UP; } - virtio_dev_atomic_write_link_status(dev, &link); - return (old.link_status == link.link_status) ? -1 : 0; + return rte_eth_linkstatus_set(dev, &link); } static int @@ -2073,9 +2130,10 @@ virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) { const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; struct virtio_hw *hw = dev->data->dev_private; + uint64_t offloads = rxmode->offloads; if (mask & ETH_VLAN_FILTER_MASK) { - if (rxmode->hw_vlan_filter && + if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { PMD_DRV_LOG(NOTICE, @@ -2086,7 +2144,7 @@ virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) } if (mask & ETH_VLAN_STRIP_MASK) - hw->vlan_strip = rxmode->hw_vlan_strip; + hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); return 0; } @@ -2099,7 +2157,6 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ - dev_info->pci_dev = dev->device ? RTE_ETH_DEV_TO_PCI(dev) : NULL; dev_info->max_rx_queues = RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); dev_info->max_tx_queues = @@ -2107,31 +2164,32 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; - dev_info->default_txconf = (struct rte_eth_txconf) { - .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS - }; host_features = VTPCI_OPS(hw)->get_features(hw); - dev_info->rx_offload_capa = 0; + dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP | + DEV_RX_OFFLOAD_CRC_STRIP; if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_CKSUM | DEV_RX_OFFLOAD_UDP_CKSUM; } + if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) + dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | (1ULL << VIRTIO_NET_F_GUEST_TSO6); if ((host_features & tso_mask) == tso_mask) dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; - dev_info->tx_offload_capa = 0; - if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) { + dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | + DEV_TX_OFFLOAD_VLAN_INSERT; + if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_UDP_CKSUM | DEV_TX_OFFLOAD_TCP_CKSUM; } tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | (1ULL << VIRTIO_NET_F_HOST_TSO6); - if ((hw->guest_features & tso_mask) == tso_mask) + if ((host_features & tso_mask) == tso_mask) dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; } @@ -2150,9 +2208,7 @@ RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); -RTE_INIT(virtio_init_log); -static void -virtio_init_log(void) +RTE_INIT(virtio_init_log) { virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); if (virtio_logtype_init >= 0) diff --git a/drivers/net/virtio/virtio_ethdev.h b/drivers/net/virtio/virtio_ethdev.h index 4539d2e4..b726ad10 100644 --- a/drivers/net/virtio/virtio_ethdev.h +++ b/drivers/net/virtio/virtio_ethdev.h @@ -28,14 +28,12 @@ 1u << VIRTIO_NET_F_CTRL_VQ | \ 1u << VIRTIO_NET_F_CTRL_RX | \ 1u << VIRTIO_NET_F_CTRL_VLAN | \ - 1u << VIRTIO_NET_F_CSUM | \ - 1u << VIRTIO_NET_F_HOST_TSO4 | \ - 1u << VIRTIO_NET_F_HOST_TSO6 | \ 1u << VIRTIO_NET_F_MRG_RXBUF | \ 1u << VIRTIO_NET_F_MTU | \ 1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE | \ 1u << VIRTIO_RING_F_INDIRECT_DESC | \ 1ULL << VIRTIO_F_VERSION_1 | \ + 1ULL << VIRTIO_F_IN_ORDER | \ 1ULL << VIRTIO_F_IOMMU_PLATFORM) #define VIRTIO_PMD_SUPPORTED_GUEST_FEATURES \ @@ -43,6 +41,7 @@ 1u << VIRTIO_NET_F_GUEST_CSUM | \ 1u << VIRTIO_NET_F_GUEST_TSO4 | \ 1u << VIRTIO_NET_F_GUEST_TSO6) + /* * CQ function prototype */ @@ -75,9 +74,15 @@ uint16_t virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t virtio_recv_mergeable_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); +uint16_t virtio_recv_mergeable_pkts_inorder(void *rx_queue, + struct rte_mbuf **rx_pkts, uint16_t nb_pkts); + uint16_t virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); +uint16_t virtio_xmit_pkts_inorder(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts); + uint16_t virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h index a28ba833..58fdd3d4 100644 --- a/drivers/net/virtio/virtio_pci.h +++ b/drivers/net/virtio/virtio_pci.h @@ -6,6 +6,7 @@ #define _VIRTIO_PCI_H_ #include +#include #include #include @@ -121,6 +122,12 @@ struct virtnet_ctl; #define VIRTIO_TRANSPORT_F_START 28 #define VIRTIO_TRANSPORT_F_END 34 +/* + * Inorder feature indicates that all buffers are used by the device + * in the same order in which they have been made available. + */ +#define VIRTIO_F_IN_ORDER 35 + /* The Guest publishes the used index for which it expects an interrupt * at the end of the avail ring. Host should ignore the avail->flags field. */ /* The Host publishes the avail index for which it expects a kick @@ -232,7 +239,10 @@ struct virtio_hw { uint8_t use_msix; uint8_t modern; uint8_t use_simple_rx; - uint8_t use_simple_tx; + uint8_t use_inorder_rx; + uint8_t use_inorder_tx; + bool has_tx_offload; + bool has_rx_offload; uint16_t port_id; uint8_t mac_addr[ETHER_ADDR_LEN]; uint32_t notify_off_multiplier; diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index 8dbf2a30..eb891433 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -38,10 +38,6 @@ #define VIRTIO_DUMP_PACKET(m, len) do { } while (0) #endif - -#define VIRTIO_SIMPLE_FLAGS ((uint32_t)ETH_TXQ_FLAGS_NOMULTSEGS | \ - ETH_TXQ_FLAGS_NOOFFLOADS) - int virtio_dev_rx_queue_done(void *rxq, uint16_t offset) { @@ -51,6 +47,13 @@ virtio_dev_rx_queue_done(void *rxq, uint16_t offset) return VIRTQUEUE_NUSED(vq) >= offset; } +void +vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, uint16_t num) +{ + vq->vq_free_cnt += num; + vq->vq_desc_tail_idx = desc_idx & (vq->vq_nentries - 1); +} + void vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx) { @@ -119,6 +122,44 @@ virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts, return i; } +static uint16_t +virtqueue_dequeue_rx_inorder(struct virtqueue *vq, + struct rte_mbuf **rx_pkts, + uint32_t *len, + uint16_t num) +{ + struct vring_used_elem *uep; + struct rte_mbuf *cookie; + uint16_t used_idx = 0; + uint16_t i; + + if (unlikely(num == 0)) + return 0; + + for (i = 0; i < num; i++) { + used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1); + /* Desc idx same as used idx */ + uep = &vq->vq_ring.used->ring[used_idx]; + len[i] = uep->len; + cookie = (struct rte_mbuf *)vq->vq_descx[used_idx].cookie; + + if (unlikely(cookie == NULL)) { + PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u", + vq->vq_used_cons_idx); + break; + } + + rte_prefetch0(cookie); + rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *)); + rx_pkts[i] = cookie; + vq->vq_used_cons_idx++; + vq->vq_descx[used_idx].cookie = NULL; + } + + vq_ring_free_inorder(vq, used_idx, i); + return i; +} + #ifndef DEFAULT_TX_FREE_THRESH #define DEFAULT_TX_FREE_THRESH 32 #endif @@ -147,6 +188,83 @@ virtio_xmit_cleanup(struct virtqueue *vq, uint16_t num) } } +/* Cleanup from completed inorder transmits. */ +static void +virtio_xmit_cleanup_inorder(struct virtqueue *vq, uint16_t num) +{ + uint16_t i, used_idx, desc_idx = 0, last_idx; + int16_t free_cnt = 0; + struct vq_desc_extra *dxp = NULL; + + if (unlikely(num == 0)) + return; + + for (i = 0; i < num; i++) { + struct vring_used_elem *uep; + + used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1); + uep = &vq->vq_ring.used->ring[used_idx]; + desc_idx = (uint16_t)uep->id; + + dxp = &vq->vq_descx[desc_idx]; + vq->vq_used_cons_idx++; + + if (dxp->cookie != NULL) { + rte_pktmbuf_free(dxp->cookie); + dxp->cookie = NULL; + } + } + + last_idx = desc_idx + dxp->ndescs - 1; + free_cnt = last_idx - vq->vq_desc_tail_idx; + if (free_cnt <= 0) + free_cnt += vq->vq_nentries; + + vq_ring_free_inorder(vq, last_idx, free_cnt); +} + +static inline int +virtqueue_enqueue_refill_inorder(struct virtqueue *vq, + struct rte_mbuf **cookies, + uint16_t num) +{ + struct vq_desc_extra *dxp; + struct virtio_hw *hw = vq->hw; + struct vring_desc *start_dp; + uint16_t head_idx, idx, i = 0; + + if (unlikely(vq->vq_free_cnt == 0)) + return -ENOSPC; + if (unlikely(vq->vq_free_cnt < num)) + return -EMSGSIZE; + + head_idx = vq->vq_desc_head_idx & (vq->vq_nentries - 1); + start_dp = vq->vq_ring.desc; + + while (i < num) { + idx = head_idx & (vq->vq_nentries - 1); + dxp = &vq->vq_descx[idx]; + dxp->cookie = (void *)cookies[i]; + dxp->ndescs = 1; + + start_dp[idx].addr = + VIRTIO_MBUF_ADDR(cookies[i], vq) + + RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size; + start_dp[idx].len = + cookies[i]->buf_len - + RTE_PKTMBUF_HEADROOM + + hw->vtnet_hdr_size; + start_dp[idx].flags = VRING_DESC_F_WRITE; + + vq_update_avail_ring(vq, idx); + head_idx++; + i++; + } + + vq->vq_desc_head_idx += num; + vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num); + return 0; +} static inline int virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf *cookie) @@ -229,13 +347,6 @@ virtio_tso_fix_cksum(struct rte_mbuf *m) } } -static inline int -tx_offload_enabled(struct virtio_hw *hw) -{ - return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || - vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || - vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); -} /* avoid write operation when necessary, to lessen cache issues */ #define ASSIGN_UNLESS_EQUAL(var, val) do { \ @@ -243,9 +354,112 @@ tx_offload_enabled(struct virtio_hw *hw) (var) = (val); \ } while (0) +static inline void +virtqueue_xmit_offload(struct virtio_net_hdr *hdr, + struct rte_mbuf *cookie, + bool offload) +{ + if (offload) { + if (cookie->ol_flags & PKT_TX_TCP_SEG) + cookie->ol_flags |= PKT_TX_TCP_CKSUM; + + switch (cookie->ol_flags & PKT_TX_L4_MASK) { + case PKT_TX_UDP_CKSUM: + hdr->csum_start = cookie->l2_len + cookie->l3_len; + hdr->csum_offset = offsetof(struct udp_hdr, + dgram_cksum); + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + break; + + case PKT_TX_TCP_CKSUM: + hdr->csum_start = cookie->l2_len + cookie->l3_len; + hdr->csum_offset = offsetof(struct tcp_hdr, cksum); + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + break; + + default: + ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); + ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); + ASSIGN_UNLESS_EQUAL(hdr->flags, 0); + break; + } + + /* TCP Segmentation Offload */ + if (cookie->ol_flags & PKT_TX_TCP_SEG) { + virtio_tso_fix_cksum(cookie); + hdr->gso_type = (cookie->ol_flags & PKT_TX_IPV6) ? + VIRTIO_NET_HDR_GSO_TCPV6 : + VIRTIO_NET_HDR_GSO_TCPV4; + hdr->gso_size = cookie->tso_segsz; + hdr->hdr_len = + cookie->l2_len + + cookie->l3_len + + cookie->l4_len; + } else { + ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); + ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); + } + } +} + +static inline void +virtqueue_enqueue_xmit_inorder(struct virtnet_tx *txvq, + struct rte_mbuf **cookies, + uint16_t num) +{ + struct vq_desc_extra *dxp; + struct virtqueue *vq = txvq->vq; + struct vring_desc *start_dp; + struct virtio_net_hdr *hdr; + uint16_t idx; + uint16_t head_size = vq->hw->vtnet_hdr_size; + uint16_t i = 0; + + idx = vq->vq_desc_head_idx; + start_dp = vq->vq_ring.desc; + + while (i < num) { + idx = idx & (vq->vq_nentries - 1); + dxp = &vq->vq_descx[idx]; + dxp->cookie = (void *)cookies[i]; + dxp->ndescs = 1; + + hdr = (struct virtio_net_hdr *) + rte_pktmbuf_prepend(cookies[i], head_size); + cookies[i]->pkt_len -= head_size; + + /* if offload disabled, it is not zeroed below, do it now */ + if (!vq->hw->has_tx_offload) { + ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); + ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); + ASSIGN_UNLESS_EQUAL(hdr->flags, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); + ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); + } + + virtqueue_xmit_offload(hdr, cookies[i], + vq->hw->has_tx_offload); + + start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq); + start_dp[idx].len = cookies[i]->data_len; + start_dp[idx].flags = 0; + + vq_update_avail_ring(vq, idx); + + idx++; + i++; + }; + + vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num); + vq->vq_desc_head_idx = idx & (vq->vq_nentries - 1); +} + static inline void virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, - uint16_t needed, int use_indirect, int can_push) + uint16_t needed, int use_indirect, int can_push, + int in_order) { struct virtio_tx_region *txr = txvq->virtio_net_hdr_mz->addr; struct vq_desc_extra *dxp; @@ -255,9 +469,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, uint16_t head_idx, idx; uint16_t head_size = vq->hw->vtnet_hdr_size; struct virtio_net_hdr *hdr; - int offload; - offload = tx_offload_enabled(vq->hw); head_idx = vq->vq_desc_head_idx; idx = head_idx; dxp = &vq->vq_descx[idx]; @@ -274,8 +486,9 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, * which is wrong. Below subtract restores correct pkt size. */ cookie->pkt_len -= head_size; + /* if offload disabled, it is not zeroed below, do it now */ - if (offload == 0) { + if (!vq->hw->has_tx_offload) { ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); ASSIGN_UNLESS_EQUAL(hdr->flags, 0); @@ -312,49 +525,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, idx = start_dp[idx].next; } - /* Checksum Offload / TSO */ - if (offload) { - if (cookie->ol_flags & PKT_TX_TCP_SEG) - cookie->ol_flags |= PKT_TX_TCP_CKSUM; - - switch (cookie->ol_flags & PKT_TX_L4_MASK) { - case PKT_TX_UDP_CKSUM: - hdr->csum_start = cookie->l2_len + cookie->l3_len; - hdr->csum_offset = offsetof(struct udp_hdr, - dgram_cksum); - hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - break; - - case PKT_TX_TCP_CKSUM: - hdr->csum_start = cookie->l2_len + cookie->l3_len; - hdr->csum_offset = offsetof(struct tcp_hdr, cksum); - hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - break; - - default: - ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); - ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); - ASSIGN_UNLESS_EQUAL(hdr->flags, 0); - break; - } - - /* TCP Segmentation Offload */ - if (cookie->ol_flags & PKT_TX_TCP_SEG) { - virtio_tso_fix_cksum(cookie); - hdr->gso_type = (cookie->ol_flags & PKT_TX_IPV6) ? - VIRTIO_NET_HDR_GSO_TCPV6 : - VIRTIO_NET_HDR_GSO_TCPV4; - hdr->gso_size = cookie->tso_segsz; - hdr->hdr_len = - cookie->l2_len + - cookie->l3_len + - cookie->l4_len; - } else { - ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); - ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); - ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); - } - } + virtqueue_xmit_offload(hdr, cookie, vq->hw->has_tx_offload); do { start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq); @@ -366,11 +537,15 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, if (use_indirect) idx = vq->vq_ring.desc[head_idx].next; - vq->vq_desc_head_idx = idx; - if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) - vq->vq_desc_tail_idx = idx; vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed); + + vq->vq_desc_head_idx = idx; vq_update_avail_ring(vq, head_idx); + + if (!in_order) { + if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) + vq->vq_desc_tail_idx = idx; + } } void @@ -389,7 +564,7 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, uint16_t nb_desc, unsigned int socket_id __rte_unused, - __rte_unused const struct rte_eth_rxconf *rx_conf, + const struct rte_eth_rxconf *rx_conf __rte_unused, struct rte_mempool *mp) { uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_RQ_QUEUE_IDX; @@ -410,6 +585,7 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev, rte_exit(EXIT_FAILURE, "Cannot allocate mbufs for rx virtqueue"); } + dev->data->rx_queues[queue_idx] = rxvq; return 0; @@ -424,7 +600,7 @@ virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t queue_idx) struct virtnet_rx *rxvq = &vq->rxq; struct rte_mbuf *m; uint16_t desc_idx; - int error, nbufs; + int error, nbufs, i; PMD_INIT_FUNC_TRACE(); @@ -454,6 +630,25 @@ virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t queue_idx) virtio_rxq_rearm_vec(rxvq); nbufs += RTE_VIRTIO_VPMD_RX_REARM_THRESH; } + } else if (hw->use_inorder_rx) { + if ((!virtqueue_full(vq))) { + uint16_t free_cnt = vq->vq_free_cnt; + struct rte_mbuf *pkts[free_cnt]; + + if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, pkts, + free_cnt)) { + error = virtqueue_enqueue_refill_inorder(vq, + pkts, + free_cnt); + if (unlikely(error)) { + for (i = 0; i < free_cnt; i++) + rte_pktmbuf_free(pkts[i]); + } + } + + nbufs += free_cnt; + vq_update_avail_idx(vq); + } } else { while (!virtqueue_full(vq)) { m = rte_mbuf_raw_alloc(rxvq->mpool); @@ -501,10 +696,6 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev, PMD_INIT_FUNC_TRACE(); - /* cannot use simple rxtx funcs with multisegs or offloads */ - if ((tx_conf->txq_flags & VIRTIO_SIMPLE_FLAGS) != VIRTIO_SIMPLE_FLAGS) - hw->use_simple_tx = 0; - if (nb_desc == 0 || nb_desc > vq->vq_nentries) nb_desc = vq->vq_nentries; vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc); @@ -539,31 +730,11 @@ virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev, uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX; struct virtio_hw *hw = dev->data->dev_private; struct virtqueue *vq = hw->vqs[vtpci_queue_idx]; - uint16_t mid_idx = vq->vq_nentries >> 1; - struct virtnet_tx *txvq = &vq->txq; - uint16_t desc_idx; PMD_INIT_FUNC_TRACE(); - if (hw->use_simple_tx) { - for (desc_idx = 0; desc_idx < mid_idx; desc_idx++) { - vq->vq_ring.avail->ring[desc_idx] = - desc_idx + mid_idx; - vq->vq_ring.desc[desc_idx + mid_idx].next = - desc_idx; - vq->vq_ring.desc[desc_idx + mid_idx].addr = - txvq->virtio_net_hdr_mem + - offsetof(struct virtio_tx_region, tx_hdr); - vq->vq_ring.desc[desc_idx + mid_idx].len = - vq->hw->vtnet_hdr_size; - vq->vq_ring.desc[desc_idx + mid_idx].flags = - VRING_DESC_F_NEXT; - vq->vq_ring.desc[desc_idx].flags = 0; - } - for (desc_idx = mid_idx; desc_idx < vq->vq_nentries; - desc_idx++) - vq->vq_ring.avail->ring[desc_idx] = desc_idx; - } + if (hw->use_inorder_tx) + vq->vq_ring.desc[vq->vq_nentries - 1].next = 0; VIRTQUEUE_DUMP(vq); @@ -579,6 +750,19 @@ virtio_discard_rxbuf(struct virtqueue *vq, struct rte_mbuf *m) * successful since it was just dequeued. */ error = virtqueue_enqueue_recv_refill(vq, m); + + if (unlikely(error)) { + RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf"); + rte_pktmbuf_free(m); + } +} + +static void +virtio_discard_rxbuf_inorder(struct virtqueue *vq, struct rte_mbuf *m) +{ + int error; + + error = virtqueue_enqueue_refill_inorder(vq, &m, 1); if (unlikely(error)) { RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf"); rte_pktmbuf_free(m); @@ -617,6 +801,15 @@ virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf) } } +static inline void +virtio_rx_stats_updated(struct virtnet_rx *rxvq, struct rte_mbuf *m) +{ + VIRTIO_DUMP_PACKET(m, m->data_len); + + rxvq->stats.bytes += m->pkt_len; + virtio_update_packet_stats(&rxvq->stats, m); +} + /* Optionally fill offload information in structure */ static int virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr) @@ -689,14 +882,6 @@ virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr) return 0; } -static inline int -rx_offload_enabled(struct virtio_hw *hw) -{ - return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || - vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || - vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); -} - #define VIRTIO_MBUF_BURST_SZ 64 #define DESC_PER_CACHELINE (RTE_CACHE_LINE_SIZE / sizeof(struct vring_desc)) uint16_t @@ -712,7 +897,6 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) int error; uint32_t i, nb_enqueued; uint32_t hdr_size; - int offload; struct virtio_net_hdr *hdr; nb_rx = 0; @@ -734,7 +918,6 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) nb_enqueued = 0; hdr_size = hw->vtnet_hdr_size; - offload = rx_offload_enabled(hw); for (i = 0; i < num ; i++) { rxm = rcv_pkts[i]; @@ -763,24 +946,20 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) if (hw->vlan_strip) rte_vlan_strip(rxm); - if (offload && virtio_rx_offload(rxm, hdr) < 0) { + if (hw->has_rx_offload && virtio_rx_offload(rxm, hdr) < 0) { virtio_discard_rxbuf(vq, rxm); rxvq->stats.errors++; continue; } - VIRTIO_DUMP_PACKET(rxm, rxm->data_len); + virtio_rx_stats_updated(rxvq, rxm); rx_pkts[nb_rx++] = rxm; - - rxvq->stats.bytes += rxm->pkt_len; - virtio_update_packet_stats(&rxvq->stats, rxm); } rxvq->stats.packets += nb_rx; /* Allocate new mbuf for the used descriptor */ - error = ENOSPC; while (likely(!virtqueue_full(vq))) { new_mbuf = rte_mbuf_raw_alloc(rxvq->mpool); if (unlikely(new_mbuf == NULL)) { @@ -809,6 +988,193 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) return nb_rx; } +uint16_t +virtio_recv_mergeable_pkts_inorder(void *rx_queue, + struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct virtnet_rx *rxvq = rx_queue; + struct virtqueue *vq = rxvq->vq; + struct virtio_hw *hw = vq->hw; + struct rte_mbuf *rxm; + struct rte_mbuf *prev; + uint16_t nb_used, num, nb_rx; + uint32_t len[VIRTIO_MBUF_BURST_SZ]; + struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ]; + int error; + uint32_t nb_enqueued; + uint32_t seg_num; + uint32_t seg_res; + uint32_t hdr_size; + int32_t i; + + nb_rx = 0; + if (unlikely(hw->started == 0)) + return nb_rx; + + nb_used = VIRTQUEUE_NUSED(vq); + nb_used = RTE_MIN(nb_used, nb_pkts); + nb_used = RTE_MIN(nb_used, VIRTIO_MBUF_BURST_SZ); + + virtio_rmb(); + + PMD_RX_LOG(DEBUG, "used:%d", nb_used); + + nb_enqueued = 0; + seg_num = 1; + seg_res = 0; + hdr_size = hw->vtnet_hdr_size; + + num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len, nb_used); + + for (i = 0; i < num; i++) { + struct virtio_net_hdr_mrg_rxbuf *header; + + PMD_RX_LOG(DEBUG, "dequeue:%d", num); + PMD_RX_LOG(DEBUG, "packet len:%d", len[i]); + + rxm = rcv_pkts[i]; + + if (unlikely(len[i] < hdr_size + ETHER_HDR_LEN)) { + PMD_RX_LOG(ERR, "Packet drop"); + nb_enqueued++; + virtio_discard_rxbuf_inorder(vq, rxm); + rxvq->stats.errors++; + continue; + } + + header = (struct virtio_net_hdr_mrg_rxbuf *) + ((char *)rxm->buf_addr + RTE_PKTMBUF_HEADROOM + - hdr_size); + seg_num = header->num_buffers; + + if (seg_num == 0) + seg_num = 1; + + rxm->data_off = RTE_PKTMBUF_HEADROOM; + rxm->nb_segs = seg_num; + rxm->ol_flags = 0; + rxm->vlan_tci = 0; + rxm->pkt_len = (uint32_t)(len[i] - hdr_size); + rxm->data_len = (uint16_t)(len[i] - hdr_size); + + rxm->port = rxvq->port_id; + + rx_pkts[nb_rx] = rxm; + prev = rxm; + + if (vq->hw->has_rx_offload && + virtio_rx_offload(rxm, &header->hdr) < 0) { + virtio_discard_rxbuf_inorder(vq, rxm); + rxvq->stats.errors++; + continue; + } + + if (hw->vlan_strip) + rte_vlan_strip(rx_pkts[nb_rx]); + + seg_res = seg_num - 1; + + /* Merge remaining segments */ + while (seg_res != 0 && i < (num - 1)) { + i++; + + rxm = rcv_pkts[i]; + rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size; + rxm->pkt_len = (uint32_t)(len[i]); + rxm->data_len = (uint16_t)(len[i]); + + rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]); + rx_pkts[nb_rx]->data_len += (uint16_t)(len[i]); + + if (prev) + prev->next = rxm; + + prev = rxm; + seg_res -= 1; + } + + if (!seg_res) { + virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]); + nb_rx++; + } + } + + /* Last packet still need merge segments */ + while (seg_res != 0) { + uint16_t rcv_cnt = RTE_MIN((uint16_t)seg_res, + VIRTIO_MBUF_BURST_SZ); + + prev = rcv_pkts[nb_rx]; + if (likely(VIRTQUEUE_NUSED(vq) >= rcv_cnt)) { + num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len, + rcv_cnt); + uint16_t extra_idx = 0; + + rcv_cnt = num; + while (extra_idx < rcv_cnt) { + rxm = rcv_pkts[extra_idx]; + rxm->data_off = + RTE_PKTMBUF_HEADROOM - hdr_size; + rxm->pkt_len = (uint32_t)(len[extra_idx]); + rxm->data_len = (uint16_t)(len[extra_idx]); + prev->next = rxm; + prev = rxm; + rx_pkts[nb_rx]->pkt_len += len[extra_idx]; + rx_pkts[nb_rx]->data_len += len[extra_idx]; + extra_idx += 1; + }; + seg_res -= rcv_cnt; + + if (!seg_res) { + virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]); + nb_rx++; + } + } else { + PMD_RX_LOG(ERR, + "No enough segments for packet."); + virtio_discard_rxbuf_inorder(vq, prev); + rxvq->stats.errors++; + break; + } + } + + rxvq->stats.packets += nb_rx; + + /* Allocate new mbuf for the used descriptor */ + + if (likely(!virtqueue_full(vq))) { + /* free_cnt may include mrg descs */ + uint16_t free_cnt = vq->vq_free_cnt; + struct rte_mbuf *new_pkts[free_cnt]; + + if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) { + error = virtqueue_enqueue_refill_inorder(vq, new_pkts, + free_cnt); + if (unlikely(error)) { + for (i = 0; i < free_cnt; i++) + rte_pktmbuf_free(new_pkts[i]); + } + nb_enqueued += free_cnt; + } else { + struct rte_eth_dev *dev = + &rte_eth_devices[rxvq->port_id]; + dev->data->rx_mbuf_alloc_failed += free_cnt; + } + } + + if (likely(nb_enqueued)) { + vq_update_avail_idx(vq); + + if (unlikely(virtqueue_kick_prepare(vq))) { + virtqueue_notify(vq); + PMD_RX_LOG(DEBUG, "Notified"); + } + } + + return nb_rx; +} + uint16_t virtio_recv_mergeable_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, @@ -828,7 +1194,6 @@ virtio_recv_mergeable_pkts(void *rx_queue, uint16_t extra_idx; uint32_t seg_res; uint32_t hdr_size; - int offload; nb_rx = 0; if (unlikely(hw->started == 0)) @@ -846,7 +1211,6 @@ virtio_recv_mergeable_pkts(void *rx_queue, extra_idx = 0; seg_res = 0; hdr_size = hw->vtnet_hdr_size; - offload = rx_offload_enabled(hw); while (i < nb_used) { struct virtio_net_hdr_mrg_rxbuf *header; @@ -891,7 +1255,8 @@ virtio_recv_mergeable_pkts(void *rx_queue, rx_pkts[nb_rx] = rxm; prev = rxm; - if (offload && virtio_rx_offload(rxm, &header->hdr) < 0) { + if (hw->has_rx_offload && + virtio_rx_offload(rxm, &header->hdr) < 0) { virtio_discard_rxbuf(vq, rxm); rxvq->stats.errors++; continue; @@ -953,7 +1318,6 @@ virtio_recv_mergeable_pkts(void *rx_queue, rxvq->stats.packets += nb_rx; /* Allocate new mbuf for the used descriptor */ - error = ENOSPC; while (likely(!virtqueue_full(vq))) { new_mbuf = rte_mbuf_raw_alloc(rxvq->mpool); if (unlikely(new_mbuf == NULL)) { @@ -1056,7 +1420,8 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) } /* Enqueue Packet buffers */ - virtqueue_enqueue_xmit(txvq, txm, slots, use_indirect, can_push); + virtqueue_enqueue_xmit(txvq, txm, slots, use_indirect, + can_push, 0); txvq->stats.bytes += txm->pkt_len; virtio_update_packet_stats(&txvq->stats, txm); @@ -1075,3 +1440,116 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) return nb_tx; } + +uint16_t +virtio_xmit_pkts_inorder(void *tx_queue, + struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + struct virtnet_tx *txvq = tx_queue; + struct virtqueue *vq = txvq->vq; + struct virtio_hw *hw = vq->hw; + uint16_t hdr_size = hw->vtnet_hdr_size; + uint16_t nb_used, nb_avail, nb_tx = 0, nb_inorder_pkts = 0; + struct rte_mbuf *inorder_pkts[nb_pkts]; + int error; + + if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts)) + return nb_tx; + + if (unlikely(nb_pkts < 1)) + return nb_pkts; + + VIRTQUEUE_DUMP(vq); + PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts); + nb_used = VIRTQUEUE_NUSED(vq); + + virtio_rmb(); + if (likely(nb_used > vq->vq_nentries - vq->vq_free_thresh)) + virtio_xmit_cleanup_inorder(vq, nb_used); + + if (unlikely(!vq->vq_free_cnt)) + virtio_xmit_cleanup_inorder(vq, nb_used); + + nb_avail = RTE_MIN(vq->vq_free_cnt, nb_pkts); + + for (nb_tx = 0; nb_tx < nb_avail; nb_tx++) { + struct rte_mbuf *txm = tx_pkts[nb_tx]; + int slots, need; + + /* Do VLAN tag insertion */ + if (unlikely(txm->ol_flags & PKT_TX_VLAN_PKT)) { + error = rte_vlan_insert(&txm); + if (unlikely(error)) { + rte_pktmbuf_free(txm); + continue; + } + } + + /* optimize ring usage */ + if ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) || + vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) && + rte_mbuf_refcnt_read(txm) == 1 && + RTE_MBUF_DIRECT(txm) && + txm->nb_segs == 1 && + rte_pktmbuf_headroom(txm) >= hdr_size && + rte_is_aligned(rte_pktmbuf_mtod(txm, char *), + __alignof__(struct virtio_net_hdr_mrg_rxbuf))) { + inorder_pkts[nb_inorder_pkts] = txm; + nb_inorder_pkts++; + + txvq->stats.bytes += txm->pkt_len; + virtio_update_packet_stats(&txvq->stats, txm); + continue; + } + + if (nb_inorder_pkts) { + virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts, + nb_inorder_pkts); + nb_inorder_pkts = 0; + } + + slots = txm->nb_segs + 1; + need = slots - vq->vq_free_cnt; + if (unlikely(need > 0)) { + nb_used = VIRTQUEUE_NUSED(vq); + virtio_rmb(); + need = RTE_MIN(need, (int)nb_used); + + virtio_xmit_cleanup_inorder(vq, need); + + need = slots - vq->vq_free_cnt; + + if (unlikely(need > 0)) { + PMD_TX_LOG(ERR, + "No free tx descriptors to transmit"); + break; + } + } + /* Enqueue Packet buffers */ + virtqueue_enqueue_xmit(txvq, txm, slots, 0, 0, 1); + + txvq->stats.bytes += txm->pkt_len; + virtio_update_packet_stats(&txvq->stats, txm); + } + + /* Transmit all inorder packets */ + if (nb_inorder_pkts) + virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts, + nb_inorder_pkts); + + txvq->stats.packets += nb_tx; + + if (likely(nb_tx)) { + vq_update_avail_idx(vq); + + if (unlikely(virtqueue_kick_prepare(vq))) { + virtqueue_notify(vq); + PMD_TX_LOG(DEBUG, "Notified backend after xmit"); + } + } + + VIRTQUEUE_DUMP(vq); + + return nb_tx; +} diff --git a/drivers/net/virtio/virtio_rxtx_simple.c b/drivers/net/virtio/virtio_rxtx_simple.c index 51520758..31e565b4 100644 --- a/drivers/net/virtio/virtio_rxtx_simple.c +++ b/drivers/net/virtio/virtio_rxtx_simple.c @@ -27,73 +27,6 @@ #pragma GCC diagnostic ignored "-Wcast-qual" #endif -uint16_t -virtio_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts, - uint16_t nb_pkts) -{ - struct virtnet_tx *txvq = tx_queue; - struct virtqueue *vq = txvq->vq; - struct virtio_hw *hw = vq->hw; - uint16_t nb_used; - uint16_t desc_idx; - struct vring_desc *start_dp; - uint16_t nb_tail, nb_commit; - int i; - uint16_t desc_idx_max = (vq->vq_nentries >> 1) - 1; - uint16_t nb_tx = 0; - - if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts)) - return nb_tx; - - nb_used = VIRTQUEUE_NUSED(vq); - rte_compiler_barrier(); - - if (nb_used >= VIRTIO_TX_FREE_THRESH) - virtio_xmit_cleanup_simple(vq); - - nb_commit = nb_pkts = RTE_MIN((vq->vq_free_cnt >> 1), nb_pkts); - desc_idx = (uint16_t)(vq->vq_avail_idx & desc_idx_max); - start_dp = vq->vq_ring.desc; - nb_tail = (uint16_t) (desc_idx_max + 1 - desc_idx); - - if (nb_commit >= nb_tail) { - for (i = 0; i < nb_tail; i++) - vq->vq_descx[desc_idx + i].cookie = tx_pkts[i]; - for (i = 0; i < nb_tail; i++) { - start_dp[desc_idx].addr = - VIRTIO_MBUF_DATA_DMA_ADDR(*tx_pkts, vq); - start_dp[desc_idx].len = (*tx_pkts)->pkt_len; - tx_pkts++; - desc_idx++; - } - nb_commit -= nb_tail; - desc_idx = 0; - } - for (i = 0; i < nb_commit; i++) - vq->vq_descx[desc_idx + i].cookie = tx_pkts[i]; - for (i = 0; i < nb_commit; i++) { - start_dp[desc_idx].addr = - VIRTIO_MBUF_DATA_DMA_ADDR(*tx_pkts, vq); - start_dp[desc_idx].len = (*tx_pkts)->pkt_len; - tx_pkts++; - desc_idx++; - } - - rte_compiler_barrier(); - - vq->vq_free_cnt -= (uint16_t)(nb_pkts << 1); - vq->vq_avail_idx += nb_pkts; - vq->vq_ring.avail->idx = vq->vq_avail_idx; - txvq->stats.packets += nb_pkts; - - if (likely(nb_pkts)) { - if (unlikely(virtqueue_kick_prepare(vq))) - virtqueue_notify(vq); - } - - return nb_pkts; -} - int __attribute__((cold)) virtio_rxq_vec_setup(struct virtnet_rx *rxq) { diff --git a/drivers/net/virtio/virtio_rxtx_simple.h b/drivers/net/virtio/virtio_rxtx_simple.h index 303904d6..dc97e4cc 100644 --- a/drivers/net/virtio/virtio_rxtx_simple.h +++ b/drivers/net/virtio/virtio_rxtx_simple.h @@ -55,53 +55,4 @@ virtio_rxq_rearm_vec(struct virtnet_rx *rxvq) vq_update_avail_idx(vq); } -#define VIRTIO_TX_FREE_THRESH 32 -#define VIRTIO_TX_MAX_FREE_BUF_SZ 32 -#define VIRTIO_TX_FREE_NR 32 -/* TODO: vq->tx_free_cnt could mean num of free slots so we could avoid shift */ -static inline void -virtio_xmit_cleanup_simple(struct virtqueue *vq) -{ - uint16_t i, desc_idx; - uint32_t nb_free = 0; - struct rte_mbuf *m, *free[VIRTIO_TX_MAX_FREE_BUF_SZ]; - - desc_idx = (uint16_t)(vq->vq_used_cons_idx & - ((vq->vq_nentries >> 1) - 1)); - m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie; - m = rte_pktmbuf_prefree_seg(m); - if (likely(m != NULL)) { - free[0] = m; - nb_free = 1; - for (i = 1; i < VIRTIO_TX_FREE_NR; i++) { - m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie; - m = rte_pktmbuf_prefree_seg(m); - if (likely(m != NULL)) { - if (likely(m->pool == free[0]->pool)) - free[nb_free++] = m; - else { - rte_mempool_put_bulk(free[0]->pool, - (void **)free, - RTE_MIN(RTE_DIM(free), - nb_free)); - free[0] = m; - nb_free = 1; - } - } - } - rte_mempool_put_bulk(free[0]->pool, (void **)free, - RTE_MIN(RTE_DIM(free), nb_free)); - } else { - for (i = 1; i < VIRTIO_TX_FREE_NR; i++) { - m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie; - m = rte_pktmbuf_prefree_seg(m); - if (m != NULL) - rte_mempool_put(m->pool, m); - } - } - - vq->vq_used_cons_idx += VIRTIO_TX_FREE_NR; - vq->vq_free_cnt += (VIRTIO_TX_FREE_NR << 1); -} - #endif /* _VIRTIO_RXTX_SIMPLE_H_ */ diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c index 8d0a1ab2..b2444096 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel.c +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c @@ -70,6 +70,32 @@ static uint64_t vhost_req_user_to_kernel[] = { [VHOST_USER_SET_MEM_TABLE] = VHOST_SET_MEM_TABLE, }; +struct walk_arg { + struct vhost_memory_kernel *vm; + uint32_t region_nr; +}; +static int +add_memory_region(const struct rte_memseg_list *msl __rte_unused, + const struct rte_memseg *ms, size_t len, void *arg) +{ + struct walk_arg *wa = arg; + struct vhost_memory_region *mr; + void *start_addr; + + if (wa->region_nr >= max_regions) + return -1; + + mr = &wa->vm->regions[wa->region_nr++]; + start_addr = ms->addr; + + mr->guest_phys_addr = (uint64_t)(uintptr_t)start_addr; + mr->userspace_addr = (uint64_t)(uintptr_t)start_addr; + mr->memory_size = len; + mr->mmap_offset = 0; + + return 0; +} + /* By default, vhost kernel module allows 64 regions, but DPDK allows * 256 segments. As a relief, below function merges those virtually * adjacent memsegs into one region. @@ -77,63 +103,24 @@ static uint64_t vhost_req_user_to_kernel[] = { static struct vhost_memory_kernel * prepare_vhost_memory_kernel(void) { - uint32_t i, j, k = 0; - struct rte_memseg *seg; - struct vhost_memory_region *mr; struct vhost_memory_kernel *vm; + struct walk_arg wa; vm = malloc(sizeof(struct vhost_memory_kernel) + - max_regions * - sizeof(struct vhost_memory_region)); + max_regions * + sizeof(struct vhost_memory_region)); if (!vm) return NULL; - for (i = 0; i < RTE_MAX_MEMSEG; ++i) { - seg = &rte_eal_get_configuration()->mem_config->memseg[i]; - if (!seg->addr) - break; - - int new_region = 1; - - for (j = 0; j < k; ++j) { - mr = &vm->regions[j]; - - if (mr->userspace_addr + mr->memory_size == - (uint64_t)(uintptr_t)seg->addr) { - mr->memory_size += seg->len; - new_region = 0; - break; - } - - if ((uint64_t)(uintptr_t)seg->addr + seg->len == - mr->userspace_addr) { - mr->guest_phys_addr = - (uint64_t)(uintptr_t)seg->addr; - mr->userspace_addr = - (uint64_t)(uintptr_t)seg->addr; - mr->memory_size += seg->len; - new_region = 0; - break; - } - } - - if (new_region == 0) - continue; - - mr = &vm->regions[k++]; - /* use vaddr here! */ - mr->guest_phys_addr = (uint64_t)(uintptr_t)seg->addr; - mr->userspace_addr = (uint64_t)(uintptr_t)seg->addr; - mr->memory_size = seg->len; - mr->mmap_offset = 0; + wa.region_nr = 0; + wa.vm = vm; - if (k >= max_regions) { - free(vm); - return NULL; - } + if (rte_memseg_contig_walk(add_memory_region, &wa) < 0) { + free(vm); + return NULL; } - vm->nregions = k; + vm->nregions = wa.region_nr; vm->padding = 0; return vm; } @@ -351,7 +338,8 @@ vhost_kernel_enable_queue_pair(struct virtio_user_dev *dev, else hdr_size = sizeof(struct virtio_net_hdr); - tapfd = vhost_kernel_open_tap(&dev->ifname, hdr_size, req_mq); + tapfd = vhost_kernel_open_tap(&dev->ifname, hdr_size, req_mq, + (char *)dev->mac_addr); if (tapfd < 0) { PMD_DRV_LOG(ERR, "fail to open tap for vhost kernel"); return -1; diff --git a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c index 1a47a348..9ea7ade7 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel_tap.c +++ b/drivers/net/virtio/virtio_user/vhost_kernel_tap.c @@ -7,15 +7,19 @@ #include #include #include +#include #include #include #include +#include + #include "vhost_kernel_tap.h" #include "../virtio_logs.h" int -vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq) +vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq, + const char *mac) { unsigned int tap_features; int sndbuf = INT_MAX; @@ -94,6 +98,14 @@ vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq) PMD_DRV_LOG(ERR, "TUNSETOFFLOAD ioctl() failed: %s", strerror(errno)); + memset(&ifr, 0, sizeof(ifr)); + ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; + memcpy(ifr.ifr_hwaddr.sa_data, mac, ETHER_ADDR_LEN); + if (ioctl(tapfd, SIOCSIFHWADDR, (void *)&ifr) == -1) { + PMD_DRV_LOG(ERR, "SIOCSIFHWADDR failed: %s", strerror(errno)); + goto error; + } + if (!(*p_ifname)) *p_ifname = strdup(ifr.ifr_name); diff --git a/drivers/net/virtio/virtio_user/vhost_kernel_tap.h b/drivers/net/virtio/virtio_user/vhost_kernel_tap.h index 7d52e6b7..01a026f5 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel_tap.h +++ b/drivers/net/virtio/virtio_user/vhost_kernel_tap.h @@ -35,4 +35,5 @@ /* Constants */ #define PATH_NET_TUN "/dev/net/tun" -int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq); +int vhost_kernel_open_tap(char **p_ifname, int hdr_size, int req_mq, + const char *mac); diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c index 91c6449b..ef6e43df 100644 --- a/drivers/net/virtio/virtio_user/vhost_user.c +++ b/drivers/net/virtio/virtio_user/vhost_user.c @@ -138,12 +138,13 @@ struct hugepage_file_info { static int get_hugepage_file_info(struct hugepage_file_info huges[], int max) { - int idx; + int idx, k, exist; FILE *f; char buf[BUFSIZ], *tmp, *tail; char *str_underline, *str_start; int huge_index; uint64_t v_start, v_end; + struct stat stats; f = fopen("/proc/self/maps", "r"); if (!f) { @@ -183,16 +184,39 @@ get_hugepage_file_info(struct hugepage_file_info huges[], int max) if (sscanf(str_start, "map_%d", &huge_index) != 1) continue; + /* skip duplicated file which is mapped to different regions */ + for (k = 0, exist = -1; k < idx; ++k) { + if (!strcmp(huges[k].path, tmp)) { + exist = k; + break; + } + } + if (exist >= 0) + continue; + if (idx >= max) { PMD_DRV_LOG(ERR, "Exceed maximum of %d", max); goto error; } + huges[idx].addr = v_start; - huges[idx].size = v_end - v_start; + huges[idx].size = v_end - v_start; /* To be corrected later */ snprintf(huges[idx].path, PATH_MAX, "%s", tmp); idx++; } + /* correct the size for files who have many regions */ + for (k = 0; k < idx; ++k) { + if (stat(huges[k].path, &stats) < 0) { + PMD_DRV_LOG(ERR, "Failed to stat %s, %s\n", + huges[k].path, strerror(errno)); + continue; + } + huges[k].size = stats.st_size; + PMD_DRV_LOG(INFO, "file %s, size %zx\n", + huges[k].path, huges[k].size); + } + fclose(f); return idx; @@ -263,6 +287,9 @@ vhost_user_sock(struct virtio_user_dev *dev, PMD_DRV_LOG(INFO, "%s", vhost_msg_strings[req]); + if (dev->is_server && vhostfd < 0) + return -1; + msg.request = req; msg.flags = VHOST_USER_VERSION; msg.size = 0; @@ -378,6 +405,30 @@ vhost_user_sock(struct virtio_user_dev *dev, return 0; } +#define MAX_VIRTIO_USER_BACKLOG 1 +static int +virtio_user_start_server(struct virtio_user_dev *dev, struct sockaddr_un *un) +{ + int ret; + int flag; + int fd = dev->listenfd; + + ret = bind(fd, (struct sockaddr *)un, sizeof(*un)); + if (ret < 0) { + PMD_DRV_LOG(ERR, "failed to bind to %s: %s; remove it and try again\n", + dev->path, strerror(errno)); + return -1; + } + ret = listen(fd, MAX_VIRTIO_USER_BACKLOG); + if (ret < 0) + return -1; + + flag = fcntl(fd, F_GETFL); + fcntl(fd, F_SETFL, flag | O_NONBLOCK); + + return 0; +} + /** * Set up environment to talk with a vhost user backend. * @@ -405,13 +456,24 @@ vhost_user_setup(struct virtio_user_dev *dev) memset(&un, 0, sizeof(un)); un.sun_family = AF_UNIX; snprintf(un.sun_path, sizeof(un.sun_path), "%s", dev->path); - if (connect(fd, (struct sockaddr *)&un, sizeof(un)) < 0) { - PMD_DRV_LOG(ERR, "connect error, %s", strerror(errno)); - close(fd); - return -1; + + if (dev->is_server) { + dev->listenfd = fd; + if (virtio_user_start_server(dev, &un) < 0) { + PMD_DRV_LOG(ERR, "virtio-user startup fails in server mode"); + close(fd); + return -1; + } + dev->vhostfd = -1; + } else { + if (connect(fd, (struct sockaddr *)&un, sizeof(un)) < 0) { + PMD_DRV_LOG(ERR, "connect error, %s", strerror(errno)); + close(fd); + return -1; + } + dev->vhostfd = fd; } - dev->vhostfd = fd; return 0; } diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index f90fee9e..7df600b0 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -17,6 +17,8 @@ #include "virtio_user_dev.h" #include "../virtio_ethdev.h" +#define VIRTIO_USER_MEM_EVENT_CLB_NAME "virtio_user_mem_event_clb" + static int virtio_user_create_queue(struct virtio_user_dev *dev, uint32_t queue_sel) { @@ -93,12 +95,28 @@ virtio_user_queue_setup(struct virtio_user_dev *dev, return 0; } +int +is_vhost_user_by_type(const char *path) +{ + struct stat sb; + + if (stat(path, &sb) == -1) + return 0; + + return S_ISSOCK(sb.st_mode); +} + int virtio_user_start_device(struct virtio_user_dev *dev) { uint64_t features; int ret; + pthread_mutex_lock(&dev->mutex); + + if (is_vhost_user_by_type(dev->path) && dev->vhostfd < 0) + goto error; + /* Do not check return as already done in init, or reset in stop */ dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL); @@ -132,8 +150,12 @@ virtio_user_start_device(struct virtio_user_dev *dev) */ dev->ops->enable_qp(dev, 0, 1); + dev->started = true; + pthread_mutex_unlock(&dev->mutex); + return 0; error: + pthread_mutex_unlock(&dev->mutex); /* TODO: free resource here or caller to check */ return -1; } @@ -142,13 +164,17 @@ int virtio_user_stop_device(struct virtio_user_dev *dev) { uint32_t i; + pthread_mutex_lock(&dev->mutex); for (i = 0; i < dev->max_queue_pairs; ++i) dev->ops->enable_qp(dev, i, 0); if (dev->ops->send_request(dev, VHOST_USER_RESET_OWNER, NULL) < 0) { PMD_DRV_LOG(INFO, "Failed to reset the device\n"); + pthread_mutex_unlock(&dev->mutex); return -1; } + dev->started = false; + pthread_mutex_unlock(&dev->mutex); return 0; } @@ -174,17 +200,6 @@ parse_mac(struct virtio_user_dev *dev, const char *mac) } } -int -is_vhost_user_by_type(const char *path) -{ - struct stat sb; - - if (stat(path, &sb) == -1) - return 0; - - return S_ISSOCK(sb.st_mode); -} - static int virtio_user_dev_init_notify(struct virtio_user_dev *dev) { @@ -254,10 +269,41 @@ virtio_user_fill_intr_handle(struct virtio_user_dev *dev) eth_dev->intr_handle->fd = -1; if (dev->vhostfd >= 0) eth_dev->intr_handle->fd = dev->vhostfd; + else if (dev->is_server) + eth_dev->intr_handle->fd = dev->listenfd; return 0; } +static void +virtio_user_mem_event_cb(enum rte_mem_event type __rte_unused, + const void *addr __rte_unused, + size_t len __rte_unused, + void *arg) +{ + struct virtio_user_dev *dev = arg; + uint16_t i; + + pthread_mutex_lock(&dev->mutex); + + if (dev->started == false) + goto exit; + + /* Step 1: pause the active queues */ + for (i = 0; i < dev->queue_pairs; i++) + dev->ops->enable_qp(dev, i, 0); + + /* Step 2: update memory regions */ + dev->ops->send_request(dev, VHOST_USER_SET_MEM_TABLE, NULL); + + /* Step 3: resume the active queues */ + for (i = 0; i < dev->queue_pairs; i++) + dev->ops->enable_qp(dev, i, 1); + +exit: + pthread_mutex_unlock(&dev->mutex); +} + static int virtio_user_dev_setup(struct virtio_user_dev *dev) { @@ -267,21 +313,32 @@ virtio_user_dev_setup(struct virtio_user_dev *dev) dev->vhostfds = NULL; dev->tapfds = NULL; - if (is_vhost_user_by_type(dev->path)) { - dev->ops = &ops_user; - } else { - dev->ops = &ops_kernel; - - dev->vhostfds = malloc(dev->max_queue_pairs * sizeof(int)); - dev->tapfds = malloc(dev->max_queue_pairs * sizeof(int)); - if (!dev->vhostfds || !dev->tapfds) { - PMD_INIT_LOG(ERR, "Failed to malloc"); + if (dev->is_server) { + if (access(dev->path, F_OK) == 0 && + !is_vhost_user_by_type(dev->path)) { + PMD_DRV_LOG(ERR, "Server mode doesn't support vhost-kernel!"); return -1; } - - for (q = 0; q < dev->max_queue_pairs; ++q) { - dev->vhostfds[q] = -1; - dev->tapfds[q] = -1; + dev->ops = &ops_user; + } else { + if (is_vhost_user_by_type(dev->path)) { + dev->ops = &ops_user; + } else { + dev->ops = &ops_kernel; + + dev->vhostfds = malloc(dev->max_queue_pairs * + sizeof(int)); + dev->tapfds = malloc(dev->max_queue_pairs * + sizeof(int)); + if (!dev->vhostfds || !dev->tapfds) { + PMD_INIT_LOG(ERR, "Failed to malloc"); + return -1; + } + + for (q = 0; q < dev->max_queue_pairs; ++q) { + dev->vhostfds[q] = -1; + dev->tapfds[q] = -1; + } } } @@ -314,17 +371,22 @@ virtio_user_dev_setup(struct virtio_user_dev *dev) 1ULL << VIRTIO_NET_F_GUEST_CSUM | \ 1ULL << VIRTIO_NET_F_GUEST_TSO4 | \ 1ULL << VIRTIO_NET_F_GUEST_TSO6 | \ + 1ULL << VIRTIO_F_IN_ORDER | \ 1ULL << VIRTIO_F_VERSION_1) int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, - int cq, int queue_size, const char *mac, char **ifname) + int cq, int queue_size, const char *mac, char **ifname, + int mrg_rxbuf, int in_order) { + pthread_mutex_init(&dev->mutex, NULL); snprintf(dev->path, PATH_MAX, "%s", path); + dev->started = 0; dev->max_queue_pairs = queues; dev->queue_pairs = 1; /* mq disabled by default */ dev->queue_size = queue_size; dev->mac_specified = 0; + dev->unsupported_features = 0; parse_mac(dev, mac); if (*ifname) { @@ -337,18 +399,45 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, return -1; } - if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL) < 0) { - PMD_INIT_LOG(ERR, "set_owner fails: %s", strerror(errno)); - return -1; + if (!dev->is_server) { + if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, + NULL) < 0) { + PMD_INIT_LOG(ERR, "set_owner fails: %s", + strerror(errno)); + return -1; + } + + if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES, + &dev->device_features) < 0) { + PMD_INIT_LOG(ERR, "get_features failed: %s", + strerror(errno)); + return -1; + } + } else { + /* We just pretend vhost-user can support all these features. + * Note that this could be problematic that if some feature is + * negotiated but not supported by the vhost-user which comes + * later. + */ + dev->device_features = VIRTIO_USER_SUPPORTED_FEATURES; } - if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES, - &dev->device_features) < 0) { - PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno)); - return -1; + if (!mrg_rxbuf) { + dev->device_features &= ~(1ull << VIRTIO_NET_F_MRG_RXBUF); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MRG_RXBUF); + } + + if (!in_order) { + dev->device_features &= ~(1ull << VIRTIO_F_IN_ORDER); + dev->unsupported_features |= (1ull << VIRTIO_F_IN_ORDER); } - if (dev->mac_specified) + + if (dev->mac_specified) { dev->device_features |= (1ull << VIRTIO_NET_F_MAC); + } else { + dev->device_features &= ~(1ull << VIRTIO_NET_F_MAC); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MAC); + } if (cq) { /* device does not really need to know anything about CQ, @@ -363,6 +452,14 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE); dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ); dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VQ); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_RX); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VLAN); + dev->unsupported_features |= + (1ull << VIRTIO_NET_F_GUEST_ANNOUNCE); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ); + dev->unsupported_features |= + (1ull << VIRTIO_NET_F_CTRL_MAC_ADDR); } /* The backend will not report this feature, we add it explicitly */ @@ -370,6 +467,16 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->device_features |= (1ull << VIRTIO_NET_F_STATUS); dev->device_features &= VIRTIO_USER_SUPPORTED_FEATURES; + dev->unsupported_features |= ~VIRTIO_USER_SUPPORTED_FEATURES; + + if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME, + virtio_user_mem_event_cb, dev)) { + if (rte_errno != ENOTSUP) { + PMD_INIT_LOG(ERR, "Failed to register mem event" + " callback\n"); + return -1; + } + } return 0; } @@ -381,6 +488,8 @@ virtio_user_dev_uninit(struct virtio_user_dev *dev) virtio_user_stop_device(dev); + rte_mem_event_callback_unregister(VIRTIO_USER_MEM_EVENT_CLB_NAME, dev); + for (i = 0; i < dev->max_queue_pairs * 2; ++i) { close(dev->callfds[i]); close(dev->kickfds[i]); @@ -388,6 +497,11 @@ virtio_user_dev_uninit(struct virtio_user_dev *dev) close(dev->vhostfd); + if (dev->is_server && dev->listenfd >= 0) { + close(dev->listenfd); + dev->listenfd = -1; + } + if (dev->vhostfds) { for (i = 0; i < dev->max_queue_pairs; ++i) close(dev->vhostfds[i]); @@ -396,9 +510,12 @@ virtio_user_dev_uninit(struct virtio_user_dev *dev) } free(dev->ifname); + + if (dev->is_server) + unlink(dev->path); } -static uint8_t +uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs) { uint16_t i; @@ -410,11 +527,17 @@ virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs) return -1; } - for (i = 0; i < q_pairs; ++i) - ret |= dev->ops->enable_qp(dev, i, 1); - for (i = q_pairs; i < dev->max_queue_pairs; ++i) - ret |= dev->ops->enable_qp(dev, i, 0); - + /* Server mode can't enable queue pairs if vhostfd is invalid, + * always return 0 in this case. + */ + if (dev->vhostfd >= 0) { + for (i = 0; i < q_pairs; ++i) + ret |= dev->ops->enable_qp(dev, i, 1); + for (i = q_pairs; i < dev->max_queue_pairs; ++i) + ret |= dev->ops->enable_qp(dev, i, 0); + } else if (!dev->is_server) { + ret = ~0; + } dev->queue_pairs = q_pairs; return ret; diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.h b/drivers/net/virtio/virtio_user/virtio_user_dev.h index 64467b4f..d6e0e137 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.h +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h @@ -6,6 +6,7 @@ #define _VIRTIO_USER_DEV_H #include +#include #include "../virtio_pci.h" #include "../virtio_ring.h" #include "vhost.h" @@ -13,6 +14,8 @@ struct virtio_user_dev { /* for vhost_user backend */ int vhostfd; + int listenfd; /* listening fd */ + bool is_server; /* server or client mode */ /* for vhost_kernel backend */ char *ifname; @@ -30,19 +33,24 @@ struct virtio_user_dev { * and will be sync with device */ uint64_t device_features; /* supported features by device */ + uint64_t unsupported_features; /* unsupported features mask */ uint8_t status; - uint8_t port_id; + uint16_t port_id; uint8_t mac_addr[ETHER_ADDR_LEN]; char path[PATH_MAX]; struct vring vrings[VIRTIO_MAX_VIRTQUEUES]; struct virtio_user_backend_ops *ops; + pthread_mutex_t mutex; + bool started; }; int is_vhost_user_by_type(const char *path); int virtio_user_start_device(struct virtio_user_dev *dev); int virtio_user_stop_device(struct virtio_user_dev *dev); int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, - int cq, int queue_size, const char *mac, char **ifname); + int cq, int queue_size, const char *mac, char **ifname, + int mrg_rxbuf, int in_order); void virtio_user_dev_uninit(struct virtio_user_dev *dev); void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); +uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs); #endif diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c index 26364900..525d16ca 100644 --- a/drivers/net/virtio/virtio_user_ethdev.c +++ b/drivers/net/virtio/virtio_user_ethdev.c @@ -24,15 +24,92 @@ #define virtio_user_get_dev(hw) \ ((struct virtio_user_dev *)(hw)->virtio_user_dev) +static int +virtio_user_server_reconnect(struct virtio_user_dev *dev) +{ + int ret; + int flag; + int connectfd; + struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id]; + + connectfd = accept(dev->listenfd, NULL, NULL); + if (connectfd < 0) + return -1; + + dev->vhostfd = connectfd; + if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES, + &dev->device_features) < 0) { + PMD_INIT_LOG(ERR, "get_features failed: %s", + strerror(errno)); + return -1; + } + + /* umask vhost-user unsupported features */ + dev->device_features &= ~(dev->unsupported_features); + + dev->features &= dev->device_features; + + flag = fcntl(connectfd, F_GETFD); + fcntl(connectfd, F_SETFL, flag | O_NONBLOCK); + + ret = virtio_user_start_device(dev); + if (ret < 0) + return -1; + + if (dev->queue_pairs > 1) { + ret = virtio_user_handle_mq(dev, dev->queue_pairs); + if (ret != 0) { + PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!"); + return -1; + } + } + if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { + if (rte_intr_disable(eth_dev->intr_handle) < 0) { + PMD_DRV_LOG(ERR, "interrupt disable failed"); + return -1; + } + rte_intr_callback_unregister(eth_dev->intr_handle, + virtio_interrupt_handler, + eth_dev); + eth_dev->intr_handle->fd = connectfd; + rte_intr_callback_register(eth_dev->intr_handle, + virtio_interrupt_handler, eth_dev); + + if (rte_intr_enable(eth_dev->intr_handle) < 0) { + PMD_DRV_LOG(ERR, "interrupt enable failed"); + return -1; + } + } + PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!"); + return 0; +} + static void virtio_user_delayed_handler(void *param) { struct virtio_hw *hw = (struct virtio_hw *)param; - struct rte_eth_dev *dev = &rte_eth_devices[hw->port_id]; + struct rte_eth_dev *eth_dev = &rte_eth_devices[hw->port_id]; + struct virtio_user_dev *dev = virtio_user_get_dev(hw); - rte_intr_callback_unregister(dev->intr_handle, - virtio_interrupt_handler, - dev); + if (rte_intr_disable(eth_dev->intr_handle) < 0) { + PMD_DRV_LOG(ERR, "interrupt disable failed"); + return; + } + rte_intr_callback_unregister(eth_dev->intr_handle, + virtio_interrupt_handler, eth_dev); + if (dev->is_server) { + if (dev->vhostfd >= 0) { + close(dev->vhostfd); + dev->vhostfd = -1; + } + eth_dev->intr_handle->fd = dev->listenfd; + rte_intr_callback_register(eth_dev->intr_handle, + virtio_interrupt_handler, eth_dev); + if (rte_intr_enable(eth_dev->intr_handle) < 0) { + PMD_DRV_LOG(ERR, "interrupt enable failed"); + return; + } + } } static void @@ -67,12 +144,10 @@ virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset, dev->status &= (~VIRTIO_NET_S_LINK_UP); PMD_DRV_LOG(ERR, "virtio-user port %u is down", hw->port_id); - /* Only client mode is available now. Once the - * connection is broken, it can never be up - * again. Besides, this function could be called - * in the process of interrupt handling, - * callback cannot be unregistered here, set an - * alarm to do it. + + /* This function could be called in the process + * of interrupt handling, callback cannot be + * unregistered here, set an alarm to do it. */ rte_eal_alarm_set(1, virtio_user_delayed_handler, @@ -85,7 +160,12 @@ virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset, PMD_DRV_LOG(ERR, "error clearing O_NONBLOCK flag"); return; } + } else if (dev->is_server) { + dev->status &= (~VIRTIO_NET_S_LINK_UP); + if (virtio_user_server_reconnect(dev) >= 0) + dev->status |= VIRTIO_NET_S_LINK_UP; } + *(uint16_t *)dst = dev->status; } @@ -278,12 +358,19 @@ static const char *valid_args[] = { VIRTIO_USER_ARG_QUEUE_SIZE, #define VIRTIO_USER_ARG_INTERFACE_NAME "iface" VIRTIO_USER_ARG_INTERFACE_NAME, +#define VIRTIO_USER_ARG_SERVER_MODE "server" + VIRTIO_USER_ARG_SERVER_MODE, +#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf" + VIRTIO_USER_ARG_MRG_RXBUF, +#define VIRTIO_USER_ARG_IN_ORDER "in_order" + VIRTIO_USER_ARG_IN_ORDER, NULL }; #define VIRTIO_USER_DEF_CQ_EN 0 #define VIRTIO_USER_DEF_Q_NUM 1 #define VIRTIO_USER_DEF_Q_SZ 256 +#define VIRTIO_USER_DEF_SERVER_MODE 0 static int get_string_arg(const char *key __rte_unused, @@ -349,7 +436,8 @@ virtio_user_eth_dev_alloc(struct rte_vdev_device *vdev) hw->use_msix = 1; hw->modern = 0; hw->use_simple_rx = 0; - hw->use_simple_tx = 0; + hw->use_inorder_rx = 0; + hw->use_inorder_tx = 0; hw->virtio_user_dev = dev; return eth_dev; } @@ -378,6 +466,9 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) uint64_t queues = VIRTIO_USER_DEF_Q_NUM; uint64_t cq = VIRTIO_USER_DEF_CQ_EN; uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ; + uint64_t server_mode = VIRTIO_USER_DEF_SERVER_MODE; + uint64_t mrg_rxbuf = 1; + uint64_t in_order = 1; char *path = NULL; char *ifname = NULL; char *mac_addr = NULL; @@ -445,6 +536,15 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) } } + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_SERVER_MODE) == 1) { + if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_SERVER_MODE, + &get_integer_arg, &server_mode) < 0) { + PMD_INIT_LOG(ERR, "error to parse %s", + VIRTIO_USER_ARG_SERVER_MODE); + goto end; + } + } + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_CQ_NUM) == 1) { if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_CQ_NUM, &get_integer_arg, &cq) < 0) { @@ -468,7 +568,27 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) goto end; } + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MRG_RXBUF) == 1) { + if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MRG_RXBUF, + &get_integer_arg, &mrg_rxbuf) < 0) { + PMD_INIT_LOG(ERR, "error to parse %s", + VIRTIO_USER_ARG_MRG_RXBUF); + goto end; + } + } + + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_IN_ORDER) == 1) { + if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_IN_ORDER, + &get_integer_arg, &in_order) < 0) { + PMD_INIT_LOG(ERR, "error to parse %s", + VIRTIO_USER_ARG_IN_ORDER); + goto end; + } + } + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + struct virtio_user_dev *vu_dev; + eth_dev = virtio_user_eth_dev_alloc(dev); if (!eth_dev) { PMD_INIT_LOG(ERR, "virtio_user fails to alloc device"); @@ -476,12 +596,19 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) } hw = eth_dev->data->dev_private; + vu_dev = virtio_user_get_dev(hw); + if (server_mode == 1) + vu_dev->is_server = true; + else + vu_dev->is_server = false; if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq, - queue_size, mac_addr, &ifname) < 0) { + queue_size, mac_addr, &ifname, mrg_rxbuf, + in_order) < 0) { PMD_INIT_LOG(ERR, "virtio_user_dev_init fails"); virtio_user_eth_dev_free(eth_dev); goto end; } + } else { eth_dev = rte_eth_dev_attach_secondary(rte_vdev_device_name(dev)); if (!eth_dev) @@ -494,6 +621,8 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) virtio_user_eth_dev_free(eth_dev); goto end; } + + rte_eth_dev_probing_finish(eth_dev); ret = 0; end: @@ -552,4 +681,7 @@ RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user, "cq= " "queue_size= " "queues= " - "iface="); + "iface= " + "server=<0|1> " + "mrg_rxbuf=<0|1> " + "in_order=<0|1>"); diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c index a7d0a9cb..56a77cc7 100644 --- a/drivers/net/virtio/virtqueue.c +++ b/drivers/net/virtio/virtqueue.c @@ -74,6 +74,14 @@ virtqueue_rxvq_flush(struct virtqueue *vq) desc_idx = used_idx; rte_pktmbuf_free(vq->sw_ring[desc_idx]); vq->vq_free_cnt++; + } else if (hw->use_inorder_rx) { + desc_idx = (uint16_t)uep->id; + dxp = &vq->vq_descx[desc_idx]; + if (dxp->cookie != NULL) { + rte_pktmbuf_free(dxp->cookie); + dxp->cookie = NULL; + } + vq_ring_free_inorder(vq, desc_idx, 1); } else { desc_idx = (uint16_t)uep->id; dxp = &vq->vq_descx[desc_idx]; diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h index 14364f35..26518ed9 100644 --- a/drivers/net/virtio/virtqueue.h +++ b/drivers/net/virtio/virtqueue.h @@ -306,6 +306,8 @@ virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx) #define VIRTQUEUE_NUSED(vq) ((uint16_t)((vq)->vq_ring.used->idx - (vq)->vq_used_cons_idx)) void vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx); +void vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, + uint16_t num); static inline void vq_update_avail_idx(struct virtqueue *vq) -- cgit 1.2.3-korg