+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#ifdef RTE_EXEC_ENV_LINUXAPP
-#include <dirent.h>
-#include <fcntl.h>
-#endif
-
-#include <rte_ethdev.h>
-#include <rte_memcpy.h>
-#include <rte_string_fns.h>
-#include <rte_memzone.h>
-#include <rte_malloc.h>
-#include <rte_atomic.h>
-#include <rte_branch_prediction.h>
-#include <rte_pci.h>
-#include <rte_ether.h>
-#include <rte_common.h>
-
-#include <rte_memory.h>
-#include <rte_eal.h>
-#include <rte_dev.h>
-
-#include "virtio_ethdev.h"
-#include "virtio_pci.h"
-#include "virtio_logs.h"
-#include "virtqueue.h"
-
-
-static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
-static int virtio_dev_configure(struct rte_eth_dev *dev);
-static int virtio_dev_start(struct rte_eth_dev *dev);
-static void virtio_dev_stop(struct rte_eth_dev *dev);
-static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
-static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
-static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
-static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
-static void virtio_dev_info_get(struct rte_eth_dev *dev,
- struct rte_eth_dev_info *dev_info);
-static int virtio_dev_link_update(struct rte_eth_dev *dev,
- __rte_unused int wait_to_complete);
-
-static void virtio_set_hwaddr(struct virtio_hw *hw);
-static void virtio_get_hwaddr(struct virtio_hw *hw);
-
-static void virtio_dev_rx_queue_release(__rte_unused void *rxq);
-static void virtio_dev_tx_queue_release(__rte_unused void *txq);
-
-static void virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
-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,
- 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);
-static void virtio_mac_addr_set(struct rte_eth_dev *dev,
- struct ether_addr *mac_addr);
-
-static int virtio_dev_queue_stats_mapping_set(
- __rte_unused struct rte_eth_dev *eth_dev,
- __rte_unused uint16_t queue_id,
- __rte_unused uint8_t stat_idx,
- __rte_unused uint8_t is_rx);
-
-/*
- * The set of PCI devices this driver supports
- */
-static const struct rte_pci_id pci_id_virtio_map[] = {
-
-#define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
-#include "rte_pci_dev_ids.h"
-
-{ .vendor_id = 0, /* sentinel */ },
-};
-
-static int
-virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
- int *dlen, int pkt_num)
-{
- uint16_t head = vq->vq_desc_head_idx, i;
- int k, sum = 0;
- virtio_net_ctrl_ack status = ~0;
- struct virtio_pmd_ctrl result;
-
- ctrl->status = status;
-
- if (!vq->hw->cvq) {
- PMD_INIT_LOG(ERR,
- "%s(): Control queue is not supported.",
- __func__);
- return -1;
- }
-
- PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
- "vq->hw->cvq = %p vq = %p",
- vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
-
- if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
- return -1;
-
- memcpy(vq->virtio_net_hdr_mz->addr, ctrl,
- sizeof(struct virtio_pmd_ctrl));
-
- /*
- * Format is enforced in qemu code:
- * One TX packet for header;
- * At least one TX packet per argument;
- * One RX packet for ACK.
- */
- vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
- vq->vq_ring.desc[head].addr = vq->virtio_net_hdr_mz->phys_addr;
- vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
- vq->vq_free_cnt--;
- i = vq->vq_ring.desc[head].next;
-
- for (k = 0; k < pkt_num; k++) {
- vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
- vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
- + sizeof(struct virtio_net_ctrl_hdr)
- + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
- vq->vq_ring.desc[i].len = dlen[k];
- sum += dlen[k];
- vq->vq_free_cnt--;
- i = vq->vq_ring.desc[i].next;
- }
-
- vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
- vq->vq_ring.desc[i].addr = vq->virtio_net_hdr_mz->phys_addr
- + sizeof(struct virtio_net_ctrl_hdr);
- vq->vq_ring.desc[i].len = sizeof(ctrl->status);
- vq->vq_free_cnt--;
-
- vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
-
- vq_update_avail_ring(vq, head);
- vq_update_avail_idx(vq);
-
- PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
-
- virtqueue_notify(vq);
-
- rte_rmb();
- while (vq->vq_used_cons_idx == vq->vq_ring.used->idx) {
- rte_rmb();
- usleep(100);
- }
-
- while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
- uint32_t idx, desc_idx, used_idx;
- struct vring_used_elem *uep;
-
- used_idx = (uint32_t)(vq->vq_used_cons_idx
- & (vq->vq_nentries - 1));
- uep = &vq->vq_ring.used->ring[used_idx];
- idx = (uint32_t) uep->id;
- desc_idx = idx;
-
- while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
- desc_idx = vq->vq_ring.desc[desc_idx].next;
- vq->vq_free_cnt++;
- }
-
- vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
- vq->vq_desc_head_idx = idx;
-
- vq->vq_used_cons_idx++;
- vq->vq_free_cnt++;
- }
-
- PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
- vq->vq_free_cnt, vq->vq_desc_head_idx);
-
- memcpy(&result, vq->virtio_net_hdr_mz->addr,
- sizeof(struct virtio_pmd_ctrl));
-
- return result.status;
-}
-
-static int
-virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int dlen[1];
- int ret;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
- memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
-
- dlen[0] = sizeof(uint16_t);
-
- ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
-
- if (ret) {
- PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
- "failed, this is too late now...");
- return -EINVAL;
- }
-
- return 0;
-}
-
-int virtio_dev_queue_setup(struct rte_eth_dev *dev,
- int queue_type,
- uint16_t queue_idx,
- uint16_t vtpci_queue_idx,
- uint16_t nb_desc,
- unsigned int socket_id,
- struct virtqueue **pvq)
-{
- char vq_name[VIRTQUEUE_MAX_NAME_SZ];
- const struct rte_memzone *mz;
- uint16_t vq_size;
- int size;
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtqueue *vq = NULL;
-
- /* Write the virtqueue index to the Queue Select Field */
- VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_SEL, vtpci_queue_idx);
- PMD_INIT_LOG(DEBUG, "selecting queue: %d", vtpci_queue_idx);
-
- /*
- * Read the virtqueue size from the Queue Size field
- * Always power of 2 and if 0 virtqueue does not exist
- */
- vq_size = VIRTIO_READ_REG_2(hw, VIRTIO_PCI_QUEUE_NUM);
- PMD_INIT_LOG(DEBUG, "vq_size: %d nb_desc:%d", vq_size, nb_desc);
- if (nb_desc == 0)
- nb_desc = vq_size;
- if (vq_size == 0) {
- PMD_INIT_LOG(ERR, "%s: virtqueue does not exist", __func__);
- return -EINVAL;
- } else if (!rte_is_power_of_2(vq_size)) {
- PMD_INIT_LOG(ERR, "%s: virtqueue size is not powerof 2", __func__);
- return -EINVAL;
- } else if (nb_desc != vq_size) {
- PMD_INIT_LOG(ERR, "Warning: nb_desc(%d) is not equal to vq size (%d), fall to vq size",
- nb_desc, vq_size);
- nb_desc = vq_size;
- }
-
- if (queue_type == VTNET_RQ) {
- snprintf(vq_name, sizeof(vq_name), "port%d_rvq%d",
- dev->data->port_id, queue_idx);
- vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
- vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
- } else if (queue_type == VTNET_TQ) {
- snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d",
- dev->data->port_id, queue_idx);
- vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
- vq_size * sizeof(struct vq_desc_extra), RTE_CACHE_LINE_SIZE);
- } else if (queue_type == VTNET_CQ) {
- snprintf(vq_name, sizeof(vq_name), "port%d_cvq",
- dev->data->port_id);
- vq = rte_zmalloc(vq_name, sizeof(struct virtqueue) +
- vq_size * sizeof(struct vq_desc_extra),
- RTE_CACHE_LINE_SIZE);
- }
- if (vq == NULL) {
- PMD_INIT_LOG(ERR, "%s: Can not allocate virtqueue", __func__);
- return (-ENOMEM);
- }
-
- vq->hw = hw;
- vq->port_id = dev->data->port_id;
- vq->queue_id = queue_idx;
- vq->vq_queue_index = vtpci_queue_idx;
- vq->vq_nentries = vq_size;
- vq->vq_free_cnt = vq_size;
-
- /*
- * Reserve a memzone for vring elements
- */
- size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
- vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
- PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", size, vq->vq_ring_size);
-
- mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
- socket_id, 0, VIRTIO_PCI_VRING_ALIGN);
- if (mz == NULL) {
- rte_free(vq);
- return -ENOMEM;
- }
-
- /*
- * Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
- * and only accepts 32 bit page frame number.
- * Check if the allocated physical memory exceeds 16TB.
- */
- if ((mz->phys_addr + vq->vq_ring_size - 1) >> (VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
- PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
- rte_free(vq);
- return -ENOMEM;
- }
-
- memset(mz->addr, 0, sizeof(mz->len));
- vq->mz = mz;
- vq->vq_ring_mem = mz->phys_addr;
- vq->vq_ring_virt_mem = mz->addr;
- PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%"PRIx64, (uint64_t)mz->phys_addr);
- PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%"PRIx64, (uint64_t)(uintptr_t)mz->addr);
- vq->virtio_net_hdr_mz = NULL;
- vq->virtio_net_hdr_mem = 0;
-
- if (queue_type == VTNET_TQ) {
- /*
- * For each xmit packet, allocate a virtio_net_hdr
- */
- snprintf(vq_name, sizeof(vq_name), "port%d_tvq%d_hdrzone",
- dev->data->port_id, queue_idx);
- vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
- vq_size * hw->vtnet_hdr_size,
- socket_id, 0, RTE_CACHE_LINE_SIZE);
- if (vq->virtio_net_hdr_mz == NULL) {
- rte_free(vq);
- return -ENOMEM;
- }
- vq->virtio_net_hdr_mem =
- vq->virtio_net_hdr_mz->phys_addr;
- memset(vq->virtio_net_hdr_mz->addr, 0,
- vq_size * hw->vtnet_hdr_size);
- } else if (queue_type == VTNET_CQ) {
- /* Allocate a page for control vq command, data and status */
- snprintf(vq_name, sizeof(vq_name), "port%d_cvq_hdrzone",
- dev->data->port_id);
- vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name,
- PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE);
- if (vq->virtio_net_hdr_mz == NULL) {
- rte_free(vq);
- return -ENOMEM;
- }
- vq->virtio_net_hdr_mem =
- vq->virtio_net_hdr_mz->phys_addr;
- memset(vq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
- }
-
- /*
- * Set guest physical address of the virtqueue
- * in VIRTIO_PCI_QUEUE_PFN config register of device
- */
- VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_QUEUE_PFN,
- mz->phys_addr >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
- *pvq = vq;
- return 0;
-}
-
-static int
-virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
- uint32_t socket_id)
-{
- struct virtqueue *vq;
- uint16_t nb_desc = 0;
- int ret;
- struct virtio_hw *hw = dev->data->dev_private;
-
- PMD_INIT_FUNC_TRACE();
- ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
- vtpci_queue_idx, nb_desc, socket_id, &vq);
-
- if (ret < 0) {
- PMD_INIT_LOG(ERR, "control vq initialization failed");
- return ret;
- }
-
- hw->cvq = vq;
- return 0;
-}
-
-static void
-virtio_dev_close(struct rte_eth_dev *dev)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct rte_pci_device *pci_dev = dev->pci_dev;
-
- PMD_INIT_LOG(DEBUG, "virtio_dev_close");
-
- /* reset the NIC */
- if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
- vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
- vtpci_reset(hw);
- hw->started = 0;
- virtio_dev_free_mbufs(dev);
-}
-
-static void
-virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int dlen[1];
- int ret;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
- ctrl.data[0] = 1;
- dlen[0] = 1;
-
- ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
-
- if (ret)
- PMD_INIT_LOG(ERR, "Failed to enable promisc");
-}
-
-static void
-virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int dlen[1];
- int ret;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
- ctrl.data[0] = 0;
- dlen[0] = 1;
-
- ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
-
- if (ret)
- PMD_INIT_LOG(ERR, "Failed to disable promisc");
-}
-
-static void
-virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int dlen[1];
- int ret;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
- ctrl.data[0] = 1;
- dlen[0] = 1;
-
- ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
-
- if (ret)
- PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
-}
-
-static void
-virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int dlen[1];
- int ret;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
- ctrl.data[0] = 0;
- dlen[0] = 1;
-
- ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
-
- if (ret)
- PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
-}
-
-/*
- * dev_ops for virtio, bare necessities for basic operation
- */
-static const struct eth_dev_ops virtio_eth_dev_ops = {
- .dev_configure = virtio_dev_configure,
- .dev_start = virtio_dev_start,
- .dev_stop = virtio_dev_stop,
- .dev_close = virtio_dev_close,
- .promiscuous_enable = virtio_dev_promiscuous_enable,
- .promiscuous_disable = virtio_dev_promiscuous_disable,
- .allmulticast_enable = virtio_dev_allmulticast_enable,
- .allmulticast_disable = virtio_dev_allmulticast_disable,
-
- .dev_infos_get = virtio_dev_info_get,
- .stats_get = virtio_dev_stats_get,
- .stats_reset = virtio_dev_stats_reset,
- .link_update = virtio_dev_link_update,
- .rx_queue_setup = virtio_dev_rx_queue_setup,
- /* meaningfull only to multiple queue */
- .rx_queue_release = virtio_dev_rx_queue_release,
- .tx_queue_setup = virtio_dev_tx_queue_setup,
- /* meaningfull only to multiple queue */
- .tx_queue_release = virtio_dev_tx_queue_release,
- /* collect stats per queue */
- .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
- .vlan_filter_set = virtio_vlan_filter_set,
- .mac_addr_add = virtio_mac_addr_add,
- .mac_addr_remove = virtio_mac_addr_remove,
- .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_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
-{
- unsigned i;
-
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- const struct virtqueue *txvq = dev->data->tx_queues[i];
- if (txvq == NULL)
- continue;
-
- stats->opackets += txvq->packets;
- stats->obytes += txvq->bytes;
- stats->oerrors += txvq->errors;
-
- if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
- stats->q_opackets[i] = txvq->packets;
- stats->q_obytes[i] = txvq->bytes;
- }
- }
-
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- const struct virtqueue *rxvq = dev->data->rx_queues[i];
- if (rxvq == NULL)
- continue;
-
- stats->ipackets += rxvq->packets;
- stats->ibytes += rxvq->bytes;
- stats->ierrors += rxvq->errors;
-
- if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
- stats->q_ipackets[i] = rxvq->packets;
- stats->q_ibytes[i] = rxvq->bytes;
- }
- }
-
- stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
-}
-
-static void
-virtio_dev_stats_reset(struct rte_eth_dev *dev)
-{
- unsigned int i;
-
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- struct virtqueue *txvq = dev->data->tx_queues[i];
- if (txvq == NULL)
- continue;
-
- txvq->packets = 0;
- txvq->bytes = 0;
- txvq->errors = 0;
- }
-
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- struct virtqueue *rxvq = dev->data->rx_queues[i];
- if (rxvq == NULL)
- continue;
-
- rxvq->packets = 0;
- rxvq->bytes = 0;
- rxvq->errors = 0;
- }
-
- dev->data->rx_mbuf_alloc_failed = 0;
-}
-
-static void
-virtio_set_hwaddr(struct virtio_hw *hw)
-{
- vtpci_write_dev_config(hw,
- offsetof(struct virtio_net_config, mac),
- &hw->mac_addr, ETHER_ADDR_LEN);
-}
-
-static void
-virtio_get_hwaddr(struct virtio_hw *hw)
-{
- if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
- vtpci_read_dev_config(hw,
- offsetof(struct virtio_net_config, mac),
- &hw->mac_addr, ETHER_ADDR_LEN);
- } else {
- eth_random_addr(&hw->mac_addr[0]);
- virtio_set_hwaddr(hw);
- }
-}
-
-static int
-virtio_mac_table_set(struct virtio_hw *hw,
- const struct virtio_net_ctrl_mac *uc,
- const struct virtio_net_ctrl_mac *mc)
-{
- struct virtio_pmd_ctrl ctrl;
- int err, len[2];
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
- ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
-
- len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
- memcpy(ctrl.data, uc, len[0]);
-
- len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
- memcpy(ctrl.data + len[0], mc, len[1]);
-
- 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
-virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
- uint32_t index, uint32_t vmdq __rte_unused)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- const struct ether_addr *addrs = dev->data->mac_addrs;
- unsigned int i;
- struct virtio_net_ctrl_mac *uc, *mc;
-
- if (index >= VIRTIO_MAX_MAC_ADDRS) {
- PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
- return;
- }
-
- uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
- uc->entries = 0;
- mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
- mc->entries = 0;
-
- for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
- const struct ether_addr *addr
- = (i == index) ? mac_addr : addrs + i;
- struct virtio_net_ctrl_mac *tbl
- = is_multicast_ether_addr(addr) ? mc : uc;
-
- memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
- }
-
- virtio_mac_table_set(hw, uc, mc);
-}
-
-static void
-virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct ether_addr *addrs = dev->data->mac_addrs;
- struct virtio_net_ctrl_mac *uc, *mc;
- unsigned int i;
-
- if (index >= VIRTIO_MAX_MAC_ADDRS) {
- PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
- return;
- }
-
- uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
- uc->entries = 0;
- mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
- mc->entries = 0;
-
- for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
- struct virtio_net_ctrl_mac *tbl;
-
- if (i == index || is_zero_ether_addr(addrs + i))
- continue;
-
- tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
- memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
- }
-
- virtio_mac_table_set(hw, uc, mc);
-}
-
-static void
-virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
-{
- struct virtio_hw *hw = dev->data->dev_private;
-
- memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
-
- /* Use atomic update if available */
- if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
- struct virtio_pmd_ctrl ctrl;
- int len = ETHER_ADDR_LEN;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
- 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);
-}
-
-static int
-virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
-{
- struct virtio_hw *hw = dev->data->dev_private;
- struct virtio_pmd_ctrl ctrl;
- int len;
-
- if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
- return -ENOTSUP;
-
- ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
- ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
- memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
- len = sizeof(vlan_id);
-
- return virtio_send_command(hw->cvq, &ctrl, &len, 1);
-}
-
-static void
-virtio_negotiate_features(struct virtio_hw *hw)
-{
- uint32_t host_features, mask;
-
- /* checksum offload not implemented */
- mask = VIRTIO_NET_F_CSUM | VIRTIO_NET_F_GUEST_CSUM;
-
- /* TSO and LRO are only available when their corresponding
- * checksum offload feature is also negotiated.
- */
- mask |= VIRTIO_NET_F_HOST_TSO4 | VIRTIO_NET_F_HOST_TSO6 | VIRTIO_NET_F_HOST_ECN;
- mask |= VIRTIO_NET_F_GUEST_TSO4 | VIRTIO_NET_F_GUEST_TSO6 | VIRTIO_NET_F_GUEST_ECN;
- mask |= VTNET_LRO_FEATURES;
-
- /* not negotiating INDIRECT descriptor table support */
- mask |= VIRTIO_RING_F_INDIRECT_DESC;
-
- /* Prepare guest_features: feature that driver wants to support */
- hw->guest_features = VTNET_FEATURES & ~mask;
- PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %x",
- hw->guest_features);
-
- /* Read device(host) feature bits */
- host_features = VIRTIO_READ_REG_4(hw, VIRTIO_PCI_HOST_FEATURES);
- PMD_INIT_LOG(DEBUG, "host_features before negotiate = %x",
- host_features);
-
- /*
- * Negotiate features: Subset of device feature bits are written back
- * guest feature bits.
- */
- hw->guest_features = vtpci_negotiate_features(hw, host_features);
- PMD_INIT_LOG(DEBUG, "features after negotiate = %x",
- hw->guest_features);
-}
-
-#ifdef RTE_EXEC_ENV_LINUXAPP
-static int
-parse_sysfs_value(const char *filename, unsigned long *val)
-{
- FILE *f;
- char buf[BUFSIZ];
- char *end = NULL;
-
- f = fopen(filename, "r");
- if (f == NULL) {
- PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
- __func__, filename);
- return -1;
- }
-
- if (fgets(buf, sizeof(buf), f) == NULL) {
- PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
- __func__, filename);
- fclose(f);
- return -1;
- }
- *val = strtoul(buf, &end, 0);
- if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
- __func__, filename);
- fclose(f);
- return -1;
- }
- fclose(f);
- return 0;
-}
-
-static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
- unsigned int *uio_num)
-{
- struct dirent *e;
- DIR *dir;
- char dirname[PATH_MAX];
-
- /* depending on kernel version, uio can be located in uio/uioX
- * or uio:uioX */
- snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
- loc->domain, loc->bus, loc->devid, loc->function);
- dir = opendir(dirname);
- if (dir == NULL) {
- /* retry with the parent directory */
- snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
- loc->domain, loc->bus, loc->devid, loc->function);
- dir = opendir(dirname);
-
- if (dir == NULL) {
- PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
- return -1;
- }
- }
-
- /* take the first file starting with "uio" */
- while ((e = readdir(dir)) != NULL) {
- /* format could be uio%d ...*/
- int shortprefix_len = sizeof("uio") - 1;
- /* ... or uio:uio%d */
- int longprefix_len = sizeof("uio:uio") - 1;
- char *endptr;
-
- if (strncmp(e->d_name, "uio", 3) != 0)
- continue;
-
- /* first try uio%d */
- errno = 0;
- *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
- if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
- snprintf(buf, buflen, "%s/uio%u", dirname, *uio_num);
- break;
- }
-
- /* then try uio:uio%d */
- errno = 0;
- *uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
- if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
- snprintf(buf, buflen, "%s/uio:uio%u", dirname,
- *uio_num);
- break;
- }
- }
- closedir(dir);
-
- /* No uio resource found */
- if (e == NULL) {
- PMD_INIT_LOG(ERR, "Could not find uio resource");
- return -1;
- }
-
- return 0;
-}
-
-static int
-virtio_has_msix(const struct rte_pci_addr *loc)
-{
- DIR *d;
- char dirname[PATH_MAX];
-
- snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
- loc->domain, loc->bus, loc->devid, loc->function);
-
- d = opendir(dirname);
- if (d)
- closedir(d);
-
- return (d != NULL);
-}
-
-/* Extract I/O port numbers from sysfs */
-static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
-{
- char dirname[PATH_MAX];
- char filename[PATH_MAX];
- unsigned long start, size;
- unsigned int uio_num;
-
- if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
- return -1;
-
- /* get portio size */
- snprintf(filename, sizeof(filename),
- "%s/portio/port0/size", dirname);
- if (parse_sysfs_value(filename, &size) < 0) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse size",
- __func__);
- return -1;
- }
-
- /* get portio start */
- snprintf(filename, sizeof(filename),
- "%s/portio/port0/start", dirname);
- if (parse_sysfs_value(filename, &start) < 0) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
- __func__);
- return -1;
- }
- pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
- pci_dev->mem_resource[0].len = (uint64_t)size;
- PMD_INIT_LOG(DEBUG,
- "PCI Port IO found start=0x%lx with size=0x%lx",
- start, size);
-
- /* save fd */
- memset(dirname, 0, sizeof(dirname));
- snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
- pci_dev->intr_handle.fd = open(dirname, O_RDWR);
- if (pci_dev->intr_handle.fd < 0) {
- PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
- dirname, strerror(errno));
- return -1;
- }
-
- pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
- pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
-
- return 0;
-}
-
-/* Extract port I/O numbers from proc/ioports */
-static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
-{
- uint16_t start, end;
- int size;
- FILE *fp;
- char *line = NULL;
- char pci_id[16];
- int found = 0;
- size_t linesz;
-
- snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
- pci_dev->addr.domain,
- pci_dev->addr.bus,
- pci_dev->addr.devid,
- pci_dev->addr.function);
-
- fp = fopen("/proc/ioports", "r");
- if (fp == NULL) {
- PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
- return -1;
- }
-
- while (getdelim(&line, &linesz, '\n', fp) > 0) {
- char *ptr = line;
- char *left;
- int n;
-
- n = strcspn(ptr, ":");
- ptr[n] = 0;
- left = &ptr[n+1];
-
- while (*left && isspace(*left))
- left++;
-
- if (!strncmp(left, pci_id, strlen(pci_id))) {
- found = 1;
-
- while (*ptr && isspace(*ptr))
- ptr++;
-
- sscanf(ptr, "%04hx-%04hx", &start, &end);
- size = end - start + 1;
-
- break;
- }
- }
-
- free(line);
- fclose(fp);
-
- if (!found)
- return -1;
-
- pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
- pci_dev->mem_resource[0].len = (uint64_t)size;
- PMD_INIT_LOG(DEBUG,
- "PCI Port IO found start=0x%x with size=0x%x",
- start, size);
-
- /* can't support lsc interrupt without uio */
- pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
-
- return 0;
-}
-
-/* Extract I/O port numbers from sysfs */
-static int virtio_resource_init(struct rte_pci_device *pci_dev)
-{
- if (virtio_resource_init_by_uio(pci_dev) == 0)
- return 0;
- else
- return virtio_resource_init_by_ioports(pci_dev);
-}
-
-#else
-static int
-virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
-{
- /* nic_uio does not enable interrupts, return 0 (false). */
- return 0;
-}
-
-static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
-{
- /* no setup required */
- return 0;
-}
-#endif
-
-/*
- * 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)
-{
- struct rte_eth_dev *dev = param;
- struct virtio_hw *hw = dev->data->dev_private;
- uint8_t isr;
-
- /* Read interrupt status which clears interrupt */
- isr = vtpci_isr(hw);
- PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
-
- if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
- PMD_DRV_LOG(ERR, "interrupt enable failed");
-
- if (isr & VIRTIO_PCI_ISR_CONFIG) {
- if (virtio_dev_link_update(dev, 0) == 0)
- _rte_eth_dev_callback_process(dev,
- RTE_ETH_EVENT_INTR_LSC);
- }
-
-}
-
-static void
-rx_func_get(struct rte_eth_dev *eth_dev)
-{
- struct virtio_hw *hw = eth_dev->data->dev_private;
- if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
- eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
- else
- eth_dev->rx_pkt_burst = &virtio_recv_pkts;
-}
-
-/*
- * This function is based on probe() function in virtio_pci.c
- * It returns 0 on success.
- */
-static int
-eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
-{
- struct virtio_hw *hw = eth_dev->data->dev_private;
- struct virtio_net_config *config;
- struct virtio_net_config local_config;
- uint32_t offset_conf = sizeof(config->mac);
- struct rte_pci_device *pci_dev;
-
- RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr));
-
- eth_dev->dev_ops = &virtio_eth_dev_ops;
- eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
-
- if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
- rx_func_get(eth_dev);
- return 0;
- }
-
- /* Allocate memory for storing MAC addresses */
- eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
- if (eth_dev->data->mac_addrs == NULL) {
- PMD_INIT_LOG(ERR,
- "Failed to allocate %d bytes needed to store MAC addresses",
- ETHER_ADDR_LEN);
- return -ENOMEM;
- }
-
- pci_dev = eth_dev->pci_dev;
- if (virtio_resource_init(pci_dev) < 0)
- return -1;
-
- hw->use_msix = virtio_has_msix(&pci_dev->addr);
- hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
-
- /* Reset the device although not necessary at startup */
- vtpci_reset(hw);
-
- /* Tell the host we've noticed this device. */
- vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
-
- /* Tell the host we've known how to drive the device. */
- vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
- virtio_negotiate_features(hw);
-
- rx_func_get(eth_dev);
-
- /* Setting up rx_header size for the device */
- if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
- hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
- else
- hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
-
- /* Copy the permanent MAC address to: virtio_hw */
- virtio_get_hwaddr(hw);
- ether_addr_copy((struct ether_addr *) hw->mac_addr,
- ð_dev->data->mac_addrs[0]);
- PMD_INIT_LOG(DEBUG,
- "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
- hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
- hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
-
- if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
- config = &local_config;
-
- if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
- offset_conf += sizeof(config->status);
- } else {
- PMD_INIT_LOG(DEBUG,
- "VIRTIO_NET_F_STATUS is not supported");
- config->status = 0;
- }
-
- if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
- offset_conf += sizeof(config->max_virtqueue_pairs);
- } else {
- PMD_INIT_LOG(DEBUG,
- "VIRTIO_NET_F_MQ is not supported");
- config->max_virtqueue_pairs = 1;
- }
-
- vtpci_read_dev_config(hw, 0, (uint8_t *)config, offset_conf);
-
- hw->max_rx_queues =
- (VIRTIO_MAX_RX_QUEUES < config->max_virtqueue_pairs) ?
- VIRTIO_MAX_RX_QUEUES : config->max_virtqueue_pairs;
- hw->max_tx_queues =
- (VIRTIO_MAX_TX_QUEUES < config->max_virtqueue_pairs) ?
- VIRTIO_MAX_TX_QUEUES : config->max_virtqueue_pairs;
-
- virtio_dev_cq_queue_setup(eth_dev,
- config->max_virtqueue_pairs * 2,
- SOCKET_ID_ANY);
-
- PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
- config->max_virtqueue_pairs);
- PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
- PMD_INIT_LOG(DEBUG,
- "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
- config->mac[0], config->mac[1],
- config->mac[2], config->mac[3],
- config->mac[4], config->mac[5]);
- } else {
- hw->max_rx_queues = 1;
- hw->max_tx_queues = 1;
- }
-
- eth_dev->data->nb_rx_queues = hw->max_rx_queues;
- eth_dev->data->nb_tx_queues = hw->max_tx_queues;
-
- PMD_INIT_LOG(DEBUG, "hw->max_rx_queues=%d hw->max_tx_queues=%d",
- hw->max_rx_queues, hw->max_tx_queues);
- PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
- eth_dev->data->port_id, pci_dev->id.vendor_id,
- pci_dev->id.device_id);
-
- /* Setup interrupt callback */
- if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
- rte_intr_callback_register(&pci_dev->intr_handle,
- virtio_interrupt_handler, eth_dev);
-
- virtio_dev_cq_start(eth_dev);
-
- return 0;
-}
-
-static struct eth_driver rte_virtio_pmd = {
- {
- .name = "rte_virtio_pmd",
- .id_table = pci_id_virtio_map,
- },
- .eth_dev_init = eth_virtio_dev_init,
- .dev_private_size = sizeof(struct virtio_hw),
-};
-
-/*
- * Driver initialization routine.
- * Invoked once at EAL init time.
- * Register itself as the [Poll Mode] Driver of PCI virtio devices.
- * Returns 0 on success.
- */
-static int
-rte_virtio_pmd_init(const char *name __rte_unused,
- const char *param __rte_unused)
-{
- if (rte_eal_iopl_init() != 0) {
- PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
- return -1;
- }
-
- rte_eth_driver_register(&rte_virtio_pmd);
- return 0;
-}
-
-/*
- * Only 1 queue is supported, no queue release related operation
- */
-static void
-virtio_dev_rx_queue_release(__rte_unused void *rxq)
-{
-}
-
-static void
-virtio_dev_tx_queue_release(__rte_unused void *txq)
-{
-}
-
-/*
- * Configure virtio device
- * It returns 0 on success.
- */
-static int
-virtio_dev_configure(struct rte_eth_dev *dev)
-{
- const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
- struct virtio_hw *hw = dev->data->dev_private;
- struct rte_pci_device *pci_dev = dev->pci_dev;
-
- PMD_INIT_LOG(DEBUG, "configure");
-
- if (rxmode->hw_ip_checksum) {
- PMD_DRV_LOG(ERR, "HW IP checksum not supported");
- return (-EINVAL);
- }
-
- hw->vlan_strip = rxmode->hw_vlan_strip;
-
- if (rxmode->hw_vlan_filter
- && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
- PMD_DRV_LOG(NOTICE,
- "vlan filtering not available on this host");
- return -ENOTSUP;
- }
-
- if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
- if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
- PMD_DRV_LOG(ERR, "failed to set config vector");
- return -EBUSY;
- }
-
- return 0;
-}
-
-
-static int
-virtio_dev_start(struct rte_eth_dev *dev)
-{
- uint16_t nb_queues, i;
- struct virtio_hw *hw = dev->data->dev_private;
- struct rte_pci_device *pci_dev = dev->pci_dev;
-
- /* check if lsc interrupt feature is enabled */
- if ((dev->data->dev_conf.intr_conf.lsc) &&
- (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)) {
- if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
- PMD_DRV_LOG(ERR, "link status not supported by host");
- return -ENOTSUP;
- }
-
- if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
- PMD_DRV_LOG(ERR, "interrupt enable failed");
- return -EIO;
- }
- }
-
- /* Initialize Link state */
- virtio_dev_link_update(dev, 0);
-
- /* On restart after stop do not touch queues */
- if (hw->started)
- return 0;
-
- /* Do final configuration before rx/tx engine starts */
- virtio_dev_rxtx_start(dev);
- vtpci_reinit_complete(hw);
-
- hw->started = 1;
-
- /*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
- */
- nb_queues = dev->data->nb_rx_queues;
- if (nb_queues > 1) {
- if (virtio_set_multiple_queues(dev, nb_queues) != 0)
- return -EINVAL;
- }
-
- PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
-
- for (i = 0; i < nb_queues; i++)
- virtqueue_notify(dev->data->rx_queues[i]);
-
- PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
-
- for (i = 0; i < dev->data->nb_rx_queues; i++)
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
-
- for (i = 0; i < dev->data->nb_tx_queues; i++)
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
-
- return 0;
-}
-
-static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
-{
- struct rte_mbuf *buf;
- int i, mbuf_num = 0;
-
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- PMD_INIT_LOG(DEBUG,
- "Before freeing rxq[%d] used and unused buf", i);
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
-
- while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
- dev->data->rx_queues[i])) != NULL) {
- rte_pktmbuf_free(buf);
- mbuf_num++;
- }
-
- PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
- PMD_INIT_LOG(DEBUG,
- "After freeing rxq[%d] used and unused buf", i);
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]);
- }
-
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- PMD_INIT_LOG(DEBUG,
- "Before freeing txq[%d] used and unused bufs",
- i);
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
-
- mbuf_num = 0;
- while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused(
- dev->data->tx_queues[i])) != NULL) {
- rte_pktmbuf_free(buf);
-
- mbuf_num++;
- }
-
- PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
- PMD_INIT_LOG(DEBUG,
- "After freeing txq[%d] used and unused buf", i);
- VIRTQUEUE_DUMP((struct virtqueue *)dev->data->tx_queues[i]);
- }
-}
-
-/*
- * Stop device: disable interrupt and mark link down
- */
-static void
-virtio_dev_stop(struct rte_eth_dev *dev)
-{
- struct rte_eth_link link;
-
- PMD_INIT_LOG(DEBUG, "stop");
-
- if (dev->data->dev_conf.intr_conf.lsc)
- rte_intr_disable(&dev->pci_dev->intr_handle);
-
- memset(&link, 0, sizeof(link));
- virtio_dev_atomic_write_link_status(dev, &link);
-}
-
-static int
-virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
-{
- struct rte_eth_link link, old;
- 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 = FULL_DUPLEX;
- link.link_speed = SPEED_10G;
-
- 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),
- &status, sizeof(status));
- if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
- link.link_status = 0;
- PMD_INIT_LOG(DEBUG, "Port %d is down",
- dev->data->port_id);
- } else {
- link.link_status = 1;
- PMD_INIT_LOG(DEBUG, "Port %d is up",
- dev->data->port_id);
- }
- } else {
- link.link_status = 1; /* Link up */
- }
- virtio_dev_atomic_write_link_status(dev, &link);
-
- return (old.link_status == link.link_status) ? -1 : 0;
-}
-
-static void
-virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
-{
- struct virtio_hw *hw = dev->data->dev_private;
-
- dev_info->driver_name = dev->driver->pci_drv.name;
- dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
- dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
- 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
- };
-}
-
-/*
- * It enables testpmd to collect per queue stats.
- */
-static int
-virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
-__rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
-__rte_unused uint8_t is_rx)
-{
- return 0;
-}
-
-static struct rte_driver rte_virtio_driver = {
- .type = PMD_PDEV,
- .init = rte_virtio_pmd_init,
-};
-
-PMD_REGISTER_DRIVER(rte_virtio_driver);
git.droids-corp.org / dpdk.git / blobdiff