diff options
author | 2017-05-16 14:51:32 +0200 | |
---|---|---|
committer | 2017-05-16 14:51:32 +0200 | |
commit | fca143f059a0bddd7d47b8dc2df646a891b0eb0f (patch) | |
tree | 4bfeadc905c977e45e54a90c42330553b8942e4e /drivers/net/virtio/virtio_ethdev.c | |
parent | ce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6 (diff) |
Imported Upstream version 17.05
Diffstat (limited to 'drivers/net/virtio/virtio_ethdev.c')
-rw-r--r-- | drivers/net/virtio/virtio_ethdev.c | 364 |
1 files changed, 288 insertions, 76 deletions
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index f5961ab7..983b95f1 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -38,6 +38,7 @@ #include <unistd.h> #include <rte_ethdev.h> +#include <rte_ethdev_pci.h> #include <rte_memcpy.h> #include <rte_string_fns.h> #include <rte_memzone.h> @@ -86,7 +87,7 @@ static void virtio_dev_stats_reset(struct rte_eth_dev *dev); static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); static int virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on); -static void virtio_mac_addr_add(struct rte_eth_dev *dev, +static int virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, uint32_t index, uint32_t vmdq __rte_unused); static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); @@ -485,11 +486,11 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) hw->cvq = cvq; } - /* For virtio_user case (that is when dev->pci_dev is NULL), we use + /* For virtio_user case (that is when hw->dev is NULL), we use * virtual address. And we need properly set _offset_, please see * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. */ - if (dev->pci_dev) + if (!hw->virtio_user_dev) vq->offset = offsetof(struct rte_mbuf, buf_physaddr); else { vq->vq_ring_mem = (uintptr_t)mz->addr; @@ -545,6 +546,9 @@ virtio_free_queues(struct virtio_hw *hw) int queue_type; uint16_t i; + if (hw->vqs == NULL) + return; + for (i = 0; i < nr_vq; i++) { vq = hw->vqs[i]; if (!vq) @@ -563,9 +567,11 @@ virtio_free_queues(struct virtio_hw *hw) } rte_free(vq); + hw->vqs[i] = NULL; } rte_free(hw->vqs); + hw->vqs = NULL; } static int @@ -593,16 +599,29 @@ virtio_alloc_queues(struct rte_eth_dev *dev) return 0; } +static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); + static void virtio_dev_close(struct rte_eth_dev *dev) { struct virtio_hw *hw = dev->data->dev_private; + struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; PMD_INIT_LOG(DEBUG, "virtio_dev_close"); /* reset the NIC */ if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) - vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR); + VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); + if (intr_conf->rxq) + virtio_queues_unbind_intr(dev); + + if (intr_conf->lsc || intr_conf->rxq) { + rte_intr_disable(dev->intr_handle); + rte_intr_efd_disable(dev->intr_handle); + rte_free(dev->intr_handle->intr_vec); + dev->intr_handle->intr_vec = NULL; + } + vtpci_reset(hw); virtio_dev_free_mbufs(dev); virtio_free_queues(hw); @@ -617,7 +636,7 @@ virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) int ret; if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { - PMD_INIT_LOG(INFO, "host does not support rx control\n"); + PMD_INIT_LOG(INFO, "host does not support rx control"); return; } @@ -640,7 +659,7 @@ virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) int ret; if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { - PMD_INIT_LOG(INFO, "host does not support rx control\n"); + PMD_INIT_LOG(INFO, "host does not support rx control"); return; } @@ -663,7 +682,7 @@ virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) int ret; if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { - PMD_INIT_LOG(INFO, "host does not support rx control\n"); + PMD_INIT_LOG(INFO, "host does not support rx control"); return; } @@ -686,7 +705,7 @@ virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) int ret; if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { - PMD_INIT_LOG(INFO, "host does not support rx control\n"); + PMD_INIT_LOG(INFO, "host does not support rx control"); return; } @@ -708,15 +727,38 @@ virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + hw->vtnet_hdr_size; uint32_t frame_size = mtu + ether_hdr_len; + uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; + + max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); - if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) { - PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n", - ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len); + if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) { + PMD_INIT_LOG(ERR, "MTU should be between %d and %d", + ETHER_MIN_MTU, max_frame_size - ether_hdr_len); return -EINVAL; } return 0; } +static int +virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) +{ + struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; + struct virtqueue *vq = rxvq->vq; + + virtqueue_enable_intr(vq); + return 0; +} + +static int +virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) +{ + struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; + struct virtqueue *vq = rxvq->vq; + + virtqueue_disable_intr(vq); + return 0; +} + /* * dev_ops for virtio, bare necessities for basic operation */ @@ -738,7 +780,10 @@ static const struct eth_dev_ops virtio_eth_dev_ops = { .xstats_reset = virtio_dev_stats_reset, .link_update = virtio_dev_link_update, .rx_queue_setup = virtio_dev_rx_queue_setup, + .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, + .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, .rx_queue_release = virtio_dev_queue_release, + .rx_descriptor_done = virtio_dev_rx_queue_done, .tx_queue_setup = virtio_dev_tx_queue_setup, .tx_queue_release = virtio_dev_queue_release, /* collect stats per queue */ @@ -980,7 +1025,7 @@ virtio_get_hwaddr(struct virtio_hw *hw) } } -static void +static int virtio_mac_table_set(struct virtio_hw *hw, const struct virtio_net_ctrl_mac *uc, const struct virtio_net_ctrl_mac *mc) @@ -990,7 +1035,7 @@ virtio_mac_table_set(struct virtio_hw *hw, if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { PMD_DRV_LOG(INFO, "host does not support mac table"); - return; + return -1; } ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; @@ -1005,9 +1050,10 @@ virtio_mac_table_set(struct virtio_hw *hw, err = virtio_send_command(hw->cvq, &ctrl, len, 2); if (err != 0) PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); + return err; } -static void +static int virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, uint32_t index, uint32_t vmdq __rte_unused) { @@ -1018,7 +1064,7 @@ virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, if (index >= VIRTIO_MAX_MAC_ADDRS) { PMD_DRV_LOG(ERR, "mac address index %u out of range", index); - return; + return -EINVAL; } uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); @@ -1035,7 +1081,7 @@ virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN); } - virtio_mac_table_set(hw, uc, mc); + return virtio_mac_table_set(hw, uc, mc); } static void @@ -1122,6 +1168,18 @@ virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, host_features); + /* If supported, ensure MTU value is valid before acknowledging it. */ + if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { + struct virtio_net_config config; + + vtpci_read_dev_config(hw, + offsetof(struct virtio_net_config, mtu), + &config.mtu, sizeof(config.mtu)); + + if (config.mtu < ETHER_MIN_MTU) + req_features &= ~(1ULL << VIRTIO_NET_F_MTU); + } + /* * Negotiate features: Subset of device feature bits are written back * guest feature bits. @@ -1154,9 +1212,8 @@ virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) * Process Virtio Config changed interrupt and call the callback * if link state changed. */ -static void -virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle, - void *param) +void +virtio_interrupt_handler(void *param) { struct rte_eth_dev *dev = param; struct virtio_hw *hw = dev->data->dev_private; @@ -1166,7 +1223,7 @@ virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle, isr = vtpci_isr(hw); PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); - if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) + if (rte_intr_enable(dev->intr_handle) < 0) PMD_DRV_LOG(ERR, "interrupt enable failed"); if (isr & VIRTIO_PCI_ISR_CONFIG) { @@ -1187,6 +1244,95 @@ rx_func_get(struct rte_eth_dev *eth_dev) eth_dev->rx_pkt_burst = &virtio_recv_pkts; } +/* Only support 1:1 queue/interrupt mapping so far. + * TODO: support n:1 queue/interrupt mapping when there are limited number of + * interrupt vectors (<N+1). + */ +static int +virtio_queues_bind_intr(struct rte_eth_dev *dev) +{ + uint32_t i; + struct virtio_hw *hw = dev->data->dev_private; + + PMD_INIT_LOG(INFO, "queue/interrupt binding"); + for (i = 0; i < dev->data->nb_rx_queues; ++i) { + dev->intr_handle->intr_vec[i] = i + 1; + if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == + VIRTIO_MSI_NO_VECTOR) { + PMD_DRV_LOG(ERR, "failed to set queue vector"); + return -EBUSY; + } + } + + return 0; +} + +static void +virtio_queues_unbind_intr(struct rte_eth_dev *dev) +{ + uint32_t i; + struct virtio_hw *hw = dev->data->dev_private; + + PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); + for (i = 0; i < dev->data->nb_rx_queues; ++i) + VTPCI_OPS(hw)->set_queue_irq(hw, + hw->vqs[i * VTNET_CQ], + VIRTIO_MSI_NO_VECTOR); +} + +static int +virtio_configure_intr(struct rte_eth_dev *dev) +{ + struct virtio_hw *hw = dev->data->dev_private; + + if (!rte_intr_cap_multiple(dev->intr_handle)) { + PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); + return -ENOTSUP; + } + + if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { + PMD_INIT_LOG(ERR, "Fail to create eventfd"); + return -1; + } + + if (!dev->intr_handle->intr_vec) { + dev->intr_handle->intr_vec = + rte_zmalloc("intr_vec", + hw->max_queue_pairs * sizeof(int), 0); + if (!dev->intr_handle->intr_vec) { + PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", + hw->max_queue_pairs); + return -ENOMEM; + } + } + + /* Re-register callback to update max_intr */ + rte_intr_callback_unregister(dev->intr_handle, + virtio_interrupt_handler, + dev); + rte_intr_callback_register(dev->intr_handle, + virtio_interrupt_handler, + dev); + + /* DO NOT try to remove this! This function will enable msix, or QEMU + * will encounter SIGSEGV when DRIVER_OK is sent. + * And for legacy devices, this should be done before queue/vec binding + * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR + * (22) will be ignored. + */ + if (rte_intr_enable(dev->intr_handle) < 0) { + PMD_DRV_LOG(ERR, "interrupt enable failed"); + return -1; + } + + if (virtio_queues_bind_intr(dev) < 0) { + PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); + return -1; + } + + return 0; +} + /* reset device and renegotiate features if needed */ static int virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) @@ -1194,7 +1340,7 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) struct virtio_hw *hw = eth_dev->data->dev_private; struct virtio_net_config *config; struct virtio_net_config local_config; - struct rte_pci_device *pci_dev = eth_dev->pci_dev; + struct rte_pci_device *pci_dev = NULL; int ret; /* Reset the device although not necessary at startup */ @@ -1208,13 +1354,17 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) if (virtio_negotiate_features(hw, req_features) < 0) return -1; - rte_eth_copy_pci_info(eth_dev, pci_dev); + if (!hw->virtio_user_dev) { + pci_dev = RTE_DEV_TO_PCI(eth_dev->device); + rte_eth_copy_pci_info(eth_dev, pci_dev); + } - /* If host does not support status then disable LSC */ - if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) - eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; - else + eth_dev->data->dev_flags = RTE_ETH_DEV_DETACHABLE; + /* If host does not support both status and MSI-X then disable LSC */ + if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->use_msix) eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; + else + eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; rx_func_get(eth_dev); @@ -1264,6 +1414,32 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) hw->max_queue_pairs = config->max_virtqueue_pairs; + if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { + vtpci_read_dev_config(hw, + offsetof(struct virtio_net_config, mtu), + &config->mtu, + sizeof(config->mtu)); + + /* + * MTU value has already been checked at negotiation + * time, but check again in case it has changed since + * then, which should not happen. + */ + if (config->mtu < ETHER_MIN_MTU) { + PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", + config->mtu); + return -1; + } + + hw->max_mtu = config->mtu; + /* Set initial MTU to maximum one supported by vhost */ + eth_dev->data->mtu = config->mtu; + + } else { + hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - + VLAN_TAG_LEN - hw->vtnet_hdr_size; + } + PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", config->max_virtqueue_pairs); PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); @@ -1280,6 +1456,14 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) ret = virtio_alloc_queues(eth_dev); if (ret < 0) return ret; + + if (eth_dev->data->dev_conf.intr_conf.rxq) { + if (virtio_configure_intr(eth_dev) < 0) { + PMD_INIT_LOG(ERR, "failed to configure interrupt"); + return -1; + } + } + vtpci_reinit_complete(hw); if (pci_dev) @@ -1301,7 +1485,7 @@ virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) if (hw->modern) { /* * We don't have to re-parse the PCI config space, since - * rte_eal_pci_map_device() makes sure the mapped address + * rte_pci_map_device() makes sure the mapped address * in secondary process would equal to the one mapped in * the primary process: error will be returned if that * requirement is not met. @@ -1310,12 +1494,12 @@ virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) * (such as dev_cfg, common_cfg, etc.) parsed from the * primary process, which is stored in shared memory. */ - if (rte_eal_pci_map_device(pci_dev)) { + if (rte_pci_map_device(pci_dev)) { PMD_INIT_LOG(DEBUG, "failed to map pci device!"); return -1; } } else { - if (rte_eal_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) + if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) return -1; } @@ -1344,8 +1528,6 @@ int eth_virtio_dev_init(struct rte_eth_dev *eth_dev) { struct virtio_hw *hw = eth_dev->data->dev_private; - struct rte_pci_device *pci_dev; - uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE; int ret; RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); @@ -1355,7 +1537,8 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) if (rte_eal_process_type() == RTE_PROC_SECONDARY) { if (!hw->virtio_user_dev) { - ret = virtio_remap_pci(eth_dev->pci_dev, hw); + ret = virtio_remap_pci(RTE_DEV_TO_PCI(eth_dev->device), + hw); if (ret) return ret; } @@ -1379,17 +1562,16 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) return -ENOMEM; } - pci_dev = eth_dev->pci_dev; hw->port_id = eth_dev->data->port_id; - - if (pci_dev) { - ret = vtpci_init(pci_dev, hw, &dev_flags); + /* For virtio_user case the hw->virtio_user_dev is populated by + * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. + */ + if (!hw->virtio_user_dev) { + ret = vtpci_init(RTE_DEV_TO_PCI(eth_dev->device), hw); if (ret) return ret; } - eth_dev->data->dev_flags = dev_flags; - /* reset device and negotiate default features */ ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); if (ret < 0) @@ -1397,7 +1579,7 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) /* Setup interrupt callback */ if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) - rte_intr_callback_register(&pci_dev->intr_handle, + rte_intr_callback_register(eth_dev->intr_handle, virtio_interrupt_handler, eth_dev); return 0; @@ -1406,8 +1588,6 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) { - struct rte_pci_device *pci_dev; - PMD_INIT_FUNC_TRACE(); if (rte_eal_process_type() == RTE_PROC_SECONDARY) @@ -1415,7 +1595,6 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) virtio_dev_stop(eth_dev); virtio_dev_close(eth_dev); - pci_dev = eth_dev->pci_dev; eth_dev->dev_ops = NULL; eth_dev->tx_pkt_burst = NULL; @@ -1426,29 +1605,37 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) /* reset interrupt callback */ if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) - rte_intr_callback_unregister(&pci_dev->intr_handle, + rte_intr_callback_unregister(eth_dev->intr_handle, virtio_interrupt_handler, eth_dev); - rte_eal_pci_unmap_device(pci_dev); + if (eth_dev->device) + rte_pci_unmap_device(RTE_DEV_TO_PCI(eth_dev->device)); PMD_INIT_LOG(DEBUG, "dev_uninit completed"); return 0; } -static struct eth_driver rte_virtio_pmd = { - .pci_drv = { - .driver = { - .name = "net_virtio", - }, - .id_table = pci_id_virtio_map, - .drv_flags = RTE_PCI_DRV_DETACHABLE, - .probe = rte_eth_dev_pci_probe, - .remove = rte_eth_dev_pci_remove, +static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, + struct rte_pci_device *pci_dev) +{ + return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), + eth_virtio_dev_init); +} + +static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) +{ + return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); +} + +static struct rte_pci_driver rte_virtio_pmd = { + .driver = { + .name = "net_virtio", }, - .eth_dev_init = eth_virtio_dev_init, - .eth_dev_uninit = eth_virtio_dev_uninit, - .dev_private_size = sizeof(struct virtio_hw), + .id_table = pci_id_virtio_map, + .drv_flags = 0, + .probe = eth_virtio_pci_probe, + .remove = eth_virtio_pci_remove, }; RTE_INIT(rte_virtio_pmd_init); @@ -1460,7 +1647,7 @@ rte_virtio_pmd_init(void) return; } - rte_eal_pci_register(&rte_virtio_pmd.pci_drv); + rte_pci_register(&rte_virtio_pmd); } /* @@ -1520,7 +1707,9 @@ virtio_dev_configure(struct rte_eth_dev *dev) } if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) - if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) { + /* Enable vector (0) for Link State Intrerrupt */ + if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == + VIRTIO_MSI_NO_VECTOR) { PMD_DRV_LOG(ERR, "failed to set config vector"); return -EBUSY; } @@ -1543,16 +1732,22 @@ virtio_dev_start(struct rte_eth_dev *dev) PMD_DRV_LOG(ERR, "link status not supported by host"); return -ENOTSUP; } + } - if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) { + /* Enable uio/vfio intr/eventfd mapping: althrough we already did that + * in device configure, but it could be unmapped when device is + * stopped. + */ + if (dev->data->dev_conf.intr_conf.lsc || + dev->data->dev_conf.intr_conf.rxq) { + rte_intr_disable(dev->intr_handle); + + if (rte_intr_enable(dev->intr_handle) < 0) { PMD_DRV_LOG(ERR, "interrupt enable failed"); return -EIO; } } - /* Initialize Link state */ - virtio_dev_link_update(dev, 0); - /*Notify the backend *Otherwise the tap backend might already stop its queue due to fullness. *vhost backend will have no chance to be waked up @@ -1582,6 +1777,11 @@ virtio_dev_start(struct rte_eth_dev *dev) VIRTQUEUE_DUMP(txvq->vq); } + hw->started = 1; + + /* Initialize Link state */ + virtio_dev_link_update(dev, 0); + return 0; } @@ -1636,13 +1836,16 @@ static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) static void virtio_dev_stop(struct rte_eth_dev *dev) { + struct virtio_hw *hw = dev->data->dev_private; struct rte_eth_link link; + struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; PMD_INIT_LOG(DEBUG, "stop"); - if (dev->data->dev_conf.intr_conf.lsc) - rte_intr_disable(&dev->pci_dev->intr_handle); + if (intr_conf->lsc || intr_conf->rxq) + rte_intr_disable(dev->intr_handle); + hw->started = 0; memset(&link, 0, sizeof(link)); virtio_dev_atomic_write_link_status(dev, &link); } @@ -1659,7 +1862,9 @@ virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complet link.link_duplex = ETH_LINK_FULL_DUPLEX; link.link_speed = SPEED_10G; - if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { + if (hw->started == 0) { + link.link_status = ETH_LINK_DOWN; + } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { PMD_INIT_LOG(DEBUG, "Get link status from hw"); vtpci_read_dev_config(hw, offsetof(struct virtio_net_config, status), @@ -1684,13 +1889,12 @@ virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complet static void virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) { - uint64_t tso_mask; + uint64_t tso_mask, host_features; struct virtio_hw *hw = dev->data->dev_private; - if (dev->pci_dev) - dev_info->driver_name = dev->driver->pci_drv.driver.name; - else - dev_info->driver_name = "virtio_user PMD"; + dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ + + dev_info->pci_dev = dev->device ? RTE_DEV_TO_PCI(dev->device) : NULL; dev_info->max_rx_queues = RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); dev_info->max_tx_queues = @@ -1701,18 +1905,25 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->default_txconf = (struct rte_eth_txconf) { .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS }; - dev_info->rx_offload_capa = - DEV_RX_OFFLOAD_TCP_CKSUM | - DEV_RX_OFFLOAD_UDP_CKSUM | - DEV_RX_OFFLOAD_TCP_LRO; - dev_info->tx_offload_capa = 0; + host_features = VTPCI_OPS(hw)->get_features(hw); + dev_info->rx_offload_capa = 0; + if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { + dev_info->rx_offload_capa |= + DEV_RX_OFFLOAD_TCP_CKSUM | + DEV_RX_OFFLOAD_UDP_CKSUM; + } + 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_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) @@ -1732,3 +1943,4 @@ __rte_unused uint8_t is_rx) 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"); |