b0db4bea00
virtio driver already parses speed devarg. virtio-user should add it to list of valid devargs and call eth_virtio_dev_init function which init speed value. eth_virtio_dev_init already is called from virtio_user_pmd_probe function. The only change is required to enable speed devargs: adding speed to list of valid devargs. Signed-off-by: Ivan Dyukov <i.dyukov@samsung.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
789 lines
21 KiB
C
789 lines
21 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2016 Intel Corporation
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*/
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#include <stdint.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <rte_malloc.h>
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#include <rte_kvargs.h>
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#include <rte_ethdev_vdev.h>
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#include <rte_bus_vdev.h>
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#include <rte_alarm.h>
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#include <rte_cycles.h>
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#include "virtio_ethdev.h"
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#include "virtio_logs.h"
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#include "virtio_pci.h"
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#include "virtqueue.h"
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#include "virtio_rxtx.h"
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#include "virtio_user/virtio_user_dev.h"
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#include "virtio_user/vhost.h"
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#define virtio_user_get_dev(hw) \
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((struct virtio_user_dev *)(hw)->virtio_user_dev)
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static void
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virtio_user_reset_queues_packed(struct rte_eth_dev *dev)
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{
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struct virtio_hw *hw = dev->data->dev_private;
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struct virtnet_rx *rxvq;
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struct virtnet_tx *txvq;
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uint16_t i;
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/* Add lock to avoid queue contention. */
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rte_spinlock_lock(&hw->state_lock);
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hw->started = 0;
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/*
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* Waitting for datapath to complete before resetting queues.
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* 1 ms should be enough for the ongoing Tx/Rx function to finish.
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*/
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rte_delay_ms(1);
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/* Vring reset for each Tx queue and Rx queue. */
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for (i = 0; i < dev->data->nb_rx_queues; i++) {
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rxvq = dev->data->rx_queues[i];
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virtqueue_rxvq_reset_packed(rxvq->vq);
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virtio_dev_rx_queue_setup_finish(dev, i);
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}
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for (i = 0; i < dev->data->nb_tx_queues; i++) {
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txvq = dev->data->tx_queues[i];
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virtqueue_txvq_reset_packed(txvq->vq);
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}
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hw->started = 1;
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rte_spinlock_unlock(&hw->state_lock);
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}
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static int
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virtio_user_server_reconnect(struct virtio_user_dev *dev)
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{
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int ret;
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int connectfd;
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struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
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struct virtio_hw *hw = eth_dev->data->dev_private;
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connectfd = accept(dev->listenfd, NULL, NULL);
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if (connectfd < 0)
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return -1;
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dev->vhostfd = connectfd;
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if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
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&dev->device_features) < 0) {
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PMD_INIT_LOG(ERR, "get_features failed: %s",
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strerror(errno));
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return -1;
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}
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dev->device_features |= dev->frontend_features;
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/* umask vhost-user unsupported features */
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dev->device_features &= ~(dev->unsupported_features);
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dev->features &= dev->device_features;
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/* For packed ring, resetting queues is required in reconnection. */
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if (vtpci_packed_queue(hw)) {
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PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
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" when packed ring reconnecting.");
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virtio_user_reset_queues_packed(eth_dev);
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}
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ret = virtio_user_start_device(dev);
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if (ret < 0)
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return -1;
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if (dev->queue_pairs > 1) {
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ret = virtio_user_handle_mq(dev, dev->queue_pairs);
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if (ret != 0) {
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PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!");
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return -1;
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}
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}
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if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
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if (rte_intr_disable(eth_dev->intr_handle) < 0) {
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PMD_DRV_LOG(ERR, "interrupt disable failed");
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return -1;
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}
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rte_intr_callback_unregister(eth_dev->intr_handle,
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virtio_interrupt_handler,
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eth_dev);
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eth_dev->intr_handle->fd = connectfd;
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rte_intr_callback_register(eth_dev->intr_handle,
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virtio_interrupt_handler, eth_dev);
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if (rte_intr_enable(eth_dev->intr_handle) < 0) {
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PMD_DRV_LOG(ERR, "interrupt enable failed");
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return -1;
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}
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}
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PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
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return 0;
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}
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static void
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virtio_user_delayed_handler(void *param)
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{
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struct virtio_hw *hw = (struct virtio_hw *)param;
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struct rte_eth_dev *eth_dev = &rte_eth_devices[hw->port_id];
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (rte_intr_disable(eth_dev->intr_handle) < 0) {
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PMD_DRV_LOG(ERR, "interrupt disable failed");
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return;
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}
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rte_intr_callback_unregister(eth_dev->intr_handle,
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virtio_interrupt_handler, eth_dev);
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if (dev->is_server) {
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if (dev->vhostfd >= 0) {
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close(dev->vhostfd);
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dev->vhostfd = -1;
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}
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eth_dev->intr_handle->fd = dev->listenfd;
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rte_intr_callback_register(eth_dev->intr_handle,
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virtio_interrupt_handler, eth_dev);
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if (rte_intr_enable(eth_dev->intr_handle) < 0) {
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PMD_DRV_LOG(ERR, "interrupt enable failed");
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return;
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}
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}
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}
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static void
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virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset,
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void *dst, int length)
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{
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int i;
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (offset == offsetof(struct virtio_net_config, mac) &&
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length == RTE_ETHER_ADDR_LEN) {
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for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
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((uint8_t *)dst)[i] = dev->mac_addr[i];
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return;
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}
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if (offset == offsetof(struct virtio_net_config, status)) {
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char buf[128];
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if (dev->vhostfd >= 0) {
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int r;
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int flags;
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flags = fcntl(dev->vhostfd, F_GETFL);
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if (fcntl(dev->vhostfd, F_SETFL,
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flags | O_NONBLOCK) == -1) {
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PMD_DRV_LOG(ERR, "error setting O_NONBLOCK flag");
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return;
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}
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r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
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if (r == 0 || (r < 0 && errno != EAGAIN)) {
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dev->status &= (~VIRTIO_NET_S_LINK_UP);
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PMD_DRV_LOG(ERR, "virtio-user port %u is down",
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hw->port_id);
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/* This function could be called in the process
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* of interrupt handling, callback cannot be
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* unregistered here, set an alarm to do it.
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*/
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rte_eal_alarm_set(1,
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virtio_user_delayed_handler,
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(void *)hw);
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} else {
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dev->status |= VIRTIO_NET_S_LINK_UP;
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}
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if (fcntl(dev->vhostfd, F_SETFL,
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flags & ~O_NONBLOCK) == -1) {
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PMD_DRV_LOG(ERR, "error clearing O_NONBLOCK flag");
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return;
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}
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} else if (dev->is_server) {
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dev->status &= (~VIRTIO_NET_S_LINK_UP);
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if (virtio_user_server_reconnect(dev) >= 0)
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dev->status |= VIRTIO_NET_S_LINK_UP;
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}
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*(uint16_t *)dst = dev->status;
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}
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if (offset == offsetof(struct virtio_net_config, max_virtqueue_pairs))
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*(uint16_t *)dst = dev->max_queue_pairs;
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}
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static void
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virtio_user_write_dev_config(struct virtio_hw *hw, size_t offset,
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const void *src, int length)
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{
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int i;
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if ((offset == offsetof(struct virtio_net_config, mac)) &&
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(length == RTE_ETHER_ADDR_LEN))
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for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
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dev->mac_addr[i] = ((const uint8_t *)src)[i];
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else
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PMD_DRV_LOG(ERR, "not supported offset=%zu, len=%d",
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offset, length);
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}
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static void
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virtio_user_reset(struct virtio_hw *hw)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
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virtio_user_stop_device(dev);
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}
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static void
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virtio_user_set_status(struct virtio_hw *hw, uint8_t status)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
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virtio_user_start_device(dev);
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else if (status == VIRTIO_CONFIG_STATUS_RESET)
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virtio_user_reset(hw);
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dev->status = status;
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}
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static uint8_t
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virtio_user_get_status(struct virtio_hw *hw)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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return dev->status;
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}
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static uint64_t
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virtio_user_get_features(struct virtio_hw *hw)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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/* unmask feature bits defined in vhost user protocol */
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return dev->device_features & VIRTIO_PMD_SUPPORTED_GUEST_FEATURES;
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}
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static void
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virtio_user_set_features(struct virtio_hw *hw, uint64_t features)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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dev->features = features & dev->device_features;
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}
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static uint8_t
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virtio_user_get_isr(struct virtio_hw *hw __rte_unused)
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{
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/* rxq interrupts and config interrupt are separated in virtio-user,
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* here we only report config change.
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*/
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return VIRTIO_PCI_ISR_CONFIG;
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}
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static uint16_t
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virtio_user_set_config_irq(struct virtio_hw *hw __rte_unused,
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uint16_t vec __rte_unused)
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{
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return 0;
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}
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static uint16_t
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virtio_user_set_queue_irq(struct virtio_hw *hw __rte_unused,
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struct virtqueue *vq __rte_unused,
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uint16_t vec)
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{
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/* pretend we have done that */
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return vec;
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}
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/* This function is to get the queue size, aka, number of descs, of a specified
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* queue. Different with the VHOST_USER_GET_QUEUE_NUM, which is used to get the
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* max supported queues.
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*/
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static uint16_t
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virtio_user_get_queue_num(struct virtio_hw *hw, uint16_t queue_id __rte_unused)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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/* Currently, each queue has same queue size */
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return dev->queue_size;
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}
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static void
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virtio_user_setup_queue_packed(struct virtqueue *vq,
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struct virtio_user_dev *dev)
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{
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uint16_t queue_idx = vq->vq_queue_index;
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struct vring_packed *vring;
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uint64_t desc_addr;
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uint64_t avail_addr;
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uint64_t used_addr;
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uint16_t i;
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vring = &dev->packed_vrings[queue_idx];
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desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
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avail_addr = desc_addr + vq->vq_nentries *
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sizeof(struct vring_packed_desc);
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used_addr = RTE_ALIGN_CEIL(avail_addr +
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sizeof(struct vring_packed_desc_event),
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VIRTIO_PCI_VRING_ALIGN);
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vring->num = vq->vq_nentries;
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vring->desc = (void *)(uintptr_t)desc_addr;
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vring->driver = (void *)(uintptr_t)avail_addr;
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vring->device = (void *)(uintptr_t)used_addr;
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dev->packed_queues[queue_idx].avail_wrap_counter = true;
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dev->packed_queues[queue_idx].used_wrap_counter = true;
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for (i = 0; i < vring->num; i++)
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vring->desc[i].flags = 0;
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}
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static void
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virtio_user_setup_queue_split(struct virtqueue *vq, struct virtio_user_dev *dev)
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{
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uint16_t queue_idx = vq->vq_queue_index;
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uint64_t desc_addr, avail_addr, used_addr;
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desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
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avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc);
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used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail,
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ring[vq->vq_nentries]),
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VIRTIO_PCI_VRING_ALIGN);
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dev->vrings[queue_idx].num = vq->vq_nentries;
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dev->vrings[queue_idx].desc = (void *)(uintptr_t)desc_addr;
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dev->vrings[queue_idx].avail = (void *)(uintptr_t)avail_addr;
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dev->vrings[queue_idx].used = (void *)(uintptr_t)used_addr;
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}
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static int
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virtio_user_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
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{
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (vtpci_packed_queue(hw))
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virtio_user_setup_queue_packed(vq, dev);
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else
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virtio_user_setup_queue_split(vq, dev);
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return 0;
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}
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static void
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virtio_user_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
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{
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/* For legacy devices, write 0 to VIRTIO_PCI_QUEUE_PFN port, QEMU
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* correspondingly stops the ioeventfds, and reset the status of
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* the device.
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* For modern devices, set queue desc, avail, used in PCI bar to 0,
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* not see any more behavior in QEMU.
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*
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* Here we just care about what information to deliver to vhost-user
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* or vhost-kernel. So we just close ioeventfd for now.
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*/
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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close(dev->callfds[vq->vq_queue_index]);
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close(dev->kickfds[vq->vq_queue_index]);
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}
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static void
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virtio_user_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
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{
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uint64_t buf = 1;
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struct virtio_user_dev *dev = virtio_user_get_dev(hw);
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if (hw->cvq && (hw->cvq->vq == vq)) {
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if (vtpci_packed_queue(vq->hw))
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virtio_user_handle_cq_packed(dev, vq->vq_queue_index);
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else
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virtio_user_handle_cq(dev, vq->vq_queue_index);
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return;
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}
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if (write(dev->kickfds[vq->vq_queue_index], &buf, sizeof(buf)) < 0)
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PMD_DRV_LOG(ERR, "failed to kick backend: %s",
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strerror(errno));
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}
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const struct virtio_pci_ops virtio_user_ops = {
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.read_dev_cfg = virtio_user_read_dev_config,
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.write_dev_cfg = virtio_user_write_dev_config,
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.get_status = virtio_user_get_status,
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.set_status = virtio_user_set_status,
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.get_features = virtio_user_get_features,
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.set_features = virtio_user_set_features,
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.get_isr = virtio_user_get_isr,
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.set_config_irq = virtio_user_set_config_irq,
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.set_queue_irq = virtio_user_set_queue_irq,
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.get_queue_num = virtio_user_get_queue_num,
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.setup_queue = virtio_user_setup_queue,
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.del_queue = virtio_user_del_queue,
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.notify_queue = virtio_user_notify_queue,
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};
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static const char *valid_args[] = {
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#define VIRTIO_USER_ARG_QUEUES_NUM "queues"
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VIRTIO_USER_ARG_QUEUES_NUM,
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#define VIRTIO_USER_ARG_CQ_NUM "cq"
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VIRTIO_USER_ARG_CQ_NUM,
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#define VIRTIO_USER_ARG_MAC "mac"
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VIRTIO_USER_ARG_MAC,
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#define VIRTIO_USER_ARG_PATH "path"
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VIRTIO_USER_ARG_PATH,
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#define VIRTIO_USER_ARG_QUEUE_SIZE "queue_size"
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VIRTIO_USER_ARG_QUEUE_SIZE,
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#define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
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VIRTIO_USER_ARG_INTERFACE_NAME,
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#define VIRTIO_USER_ARG_SERVER_MODE "server"
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VIRTIO_USER_ARG_SERVER_MODE,
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#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf"
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VIRTIO_USER_ARG_MRG_RXBUF,
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#define VIRTIO_USER_ARG_IN_ORDER "in_order"
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VIRTIO_USER_ARG_IN_ORDER,
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#define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
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VIRTIO_USER_ARG_PACKED_VQ,
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#define VIRTIO_USER_ARG_SPEED "speed"
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VIRTIO_USER_ARG_SPEED,
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NULL
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};
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#define VIRTIO_USER_DEF_CQ_EN 0
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#define VIRTIO_USER_DEF_Q_NUM 1
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#define VIRTIO_USER_DEF_Q_SZ 256
|
|
#define VIRTIO_USER_DEF_SERVER_MODE 0
|
|
|
|
static int
|
|
get_string_arg(const char *key __rte_unused,
|
|
const char *value, void *extra_args)
|
|
{
|
|
if (!value || !extra_args)
|
|
return -EINVAL;
|
|
|
|
*(char **)extra_args = strdup(value);
|
|
|
|
if (!*(char **)extra_args)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
get_integer_arg(const char *key __rte_unused,
|
|
const char *value, void *extra_args)
|
|
{
|
|
uint64_t integer = 0;
|
|
if (!value || !extra_args)
|
|
return -EINVAL;
|
|
errno = 0;
|
|
integer = strtoull(value, NULL, 0);
|
|
/* extra_args keeps default value, it should be replaced
|
|
* only in case of successful parsing of the 'value' arg
|
|
*/
|
|
if (errno == 0)
|
|
*(uint64_t *)extra_args = integer;
|
|
return -errno;
|
|
}
|
|
|
|
static struct rte_eth_dev *
|
|
virtio_user_eth_dev_alloc(struct rte_vdev_device *vdev)
|
|
{
|
|
struct rte_eth_dev *eth_dev;
|
|
struct rte_eth_dev_data *data;
|
|
struct virtio_hw *hw;
|
|
struct virtio_user_dev *dev;
|
|
|
|
eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*hw));
|
|
if (!eth_dev) {
|
|
PMD_INIT_LOG(ERR, "cannot alloc rte_eth_dev");
|
|
return NULL;
|
|
}
|
|
|
|
data = eth_dev->data;
|
|
hw = eth_dev->data->dev_private;
|
|
|
|
dev = rte_zmalloc(NULL, sizeof(*dev), 0);
|
|
if (!dev) {
|
|
PMD_INIT_LOG(ERR, "malloc virtio_user_dev failed");
|
|
rte_eth_dev_release_port(eth_dev);
|
|
return NULL;
|
|
}
|
|
|
|
hw->port_id = data->port_id;
|
|
dev->port_id = data->port_id;
|
|
virtio_hw_internal[hw->port_id].vtpci_ops = &virtio_user_ops;
|
|
/*
|
|
* MSIX is required to enable LSC (see virtio_init_device).
|
|
* Here just pretend that we support msix.
|
|
*/
|
|
hw->use_msix = 1;
|
|
hw->modern = 0;
|
|
hw->use_simple_rx = 0;
|
|
hw->use_inorder_rx = 0;
|
|
hw->use_inorder_tx = 0;
|
|
hw->virtio_user_dev = dev;
|
|
return eth_dev;
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|
}
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|
|
|
static void
|
|
virtio_user_eth_dev_free(struct rte_eth_dev *eth_dev)
|
|
{
|
|
struct rte_eth_dev_data *data = eth_dev->data;
|
|
struct virtio_hw *hw = data->dev_private;
|
|
|
|
rte_free(hw->virtio_user_dev);
|
|
rte_eth_dev_release_port(eth_dev);
|
|
}
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|
|
|
/* Dev initialization routine. Invoked once for each virtio vdev at
|
|
* EAL init time, see rte_bus_probe().
|
|
* Returns 0 on success.
|
|
*/
|
|
static int
|
|
virtio_user_pmd_probe(struct rte_vdev_device *dev)
|
|
{
|
|
struct rte_kvargs *kvlist = NULL;
|
|
struct rte_eth_dev *eth_dev;
|
|
struct virtio_hw *hw;
|
|
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;
|
|
uint64_t packed_vq = 0;
|
|
char *path = NULL;
|
|
char *ifname = NULL;
|
|
char *mac_addr = NULL;
|
|
int ret = -1;
|
|
|
|
if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
|
|
const char *name = rte_vdev_device_name(dev);
|
|
eth_dev = rte_eth_dev_attach_secondary(name);
|
|
if (!eth_dev) {
|
|
PMD_INIT_LOG(ERR, "Failed to probe %s", name);
|
|
return -1;
|
|
}
|
|
|
|
if (eth_virtio_dev_init(eth_dev) < 0) {
|
|
PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
|
|
rte_eth_dev_release_port(eth_dev);
|
|
return -1;
|
|
}
|
|
|
|
eth_dev->dev_ops = &virtio_user_secondary_eth_dev_ops;
|
|
eth_dev->device = &dev->device;
|
|
rte_eth_dev_probing_finish(eth_dev);
|
|
return 0;
|
|
}
|
|
|
|
kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_args);
|
|
if (!kvlist) {
|
|
PMD_INIT_LOG(ERR, "error when parsing param");
|
|
goto end;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1) {
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PATH,
|
|
&get_string_arg, &path) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_PATH);
|
|
goto end;
|
|
}
|
|
} else {
|
|
PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user",
|
|
VIRTIO_USER_ARG_PATH);
|
|
goto end;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME) == 1) {
|
|
if (is_vhost_user_by_type(path)) {
|
|
PMD_INIT_LOG(ERR,
|
|
"arg %s applies only to vhost-kernel backend",
|
|
VIRTIO_USER_ARG_INTERFACE_NAME);
|
|
goto end;
|
|
}
|
|
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME,
|
|
&get_string_arg, &ifname) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_INTERFACE_NAME);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MAC) == 1) {
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MAC,
|
|
&get_string_arg, &mac_addr) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_MAC);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE) == 1) {
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE,
|
|
&get_integer_arg, &queue_size) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_QUEUE_SIZE);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUES_NUM) == 1) {
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUES_NUM,
|
|
&get_integer_arg, &queues) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_QUEUES_NUM);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_CQ_NUM);
|
|
goto end;
|
|
}
|
|
} else if (queues > 1) {
|
|
cq = 1;
|
|
}
|
|
|
|
if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PACKED_VQ) == 1) {
|
|
if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PACKED_VQ,
|
|
&get_integer_arg, &packed_vq) < 0) {
|
|
PMD_INIT_LOG(ERR, "error to parse %s",
|
|
VIRTIO_USER_ARG_PACKED_VQ);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (queues > 1 && cq == 0) {
|
|
PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
|
|
goto end;
|
|
}
|
|
|
|
if (queues > VIRTIO_MAX_VIRTQUEUE_PAIRS) {
|
|
PMD_INIT_LOG(ERR, "arg %s %" PRIu64 " exceeds the limit %u",
|
|
VIRTIO_USER_ARG_QUEUES_NUM, queues,
|
|
VIRTIO_MAX_VIRTQUEUE_PAIRS);
|
|
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;
|
|
}
|
|
}
|
|
|
|
eth_dev = virtio_user_eth_dev_alloc(dev);
|
|
if (!eth_dev) {
|
|
PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
|
|
goto end;
|
|
}
|
|
|
|
hw = eth_dev->data->dev_private;
|
|
if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
|
|
queue_size, mac_addr, &ifname, server_mode,
|
|
mrg_rxbuf, in_order, packed_vq) < 0) {
|
|
PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
|
|
virtio_user_eth_dev_free(eth_dev);
|
|
goto end;
|
|
}
|
|
|
|
/* previously called by rte_pci_probe() for physical dev */
|
|
if (eth_virtio_dev_init(eth_dev) < 0) {
|
|
PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
|
|
virtio_user_eth_dev_free(eth_dev);
|
|
goto end;
|
|
}
|
|
|
|
rte_eth_dev_probing_finish(eth_dev);
|
|
ret = 0;
|
|
|
|
end:
|
|
if (kvlist)
|
|
rte_kvargs_free(kvlist);
|
|
if (path)
|
|
free(path);
|
|
if (mac_addr)
|
|
free(mac_addr);
|
|
if (ifname)
|
|
free(ifname);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
virtio_user_pmd_remove(struct rte_vdev_device *vdev)
|
|
{
|
|
const char *name;
|
|
struct rte_eth_dev *eth_dev;
|
|
|
|
if (!vdev)
|
|
return -EINVAL;
|
|
|
|
name = rte_vdev_device_name(vdev);
|
|
PMD_DRV_LOG(INFO, "Un-Initializing %s", name);
|
|
eth_dev = rte_eth_dev_allocated(name);
|
|
/* Port has already been released by close. */
|
|
if (!eth_dev)
|
|
return 0;
|
|
|
|
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
|
|
return rte_eth_dev_release_port(eth_dev);
|
|
|
|
/* make sure the device is stopped, queues freed */
|
|
rte_eth_dev_close(eth_dev->data->port_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct rte_vdev_driver virtio_user_driver = {
|
|
.probe = virtio_user_pmd_probe,
|
|
.remove = virtio_user_pmd_remove,
|
|
};
|
|
|
|
RTE_PMD_REGISTER_VDEV(net_virtio_user, virtio_user_driver);
|
|
RTE_PMD_REGISTER_ALIAS(net_virtio_user, virtio_user);
|
|
RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user,
|
|
"path=<path> "
|
|
"mac=<mac addr> "
|
|
"cq=<int> "
|
|
"queue_size=<int> "
|
|
"queues=<int> "
|
|
"iface=<string> "
|
|
"server=<0|1> "
|
|
"mrg_rxbuf=<0|1> "
|
|
"in_order=<0|1> "
|
|
"packed_vq=<0|1> "
|
|
"speed=<int>");
|