numam-dpdk/drivers/net/virtio/virtio_user_ethdev.c
Ivan Dyukov b0db4bea00 net/virtio-user: adding link speed parameter
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>
2020-04-21 13:57:09 +02:00

789 lines
21 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2016 Intel Corporation
*/
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <rte_malloc.h>
#include <rte_kvargs.h>
#include <rte_ethdev_vdev.h>
#include <rte_bus_vdev.h>
#include <rte_alarm.h>
#include <rte_cycles.h>
#include "virtio_ethdev.h"
#include "virtio_logs.h"
#include "virtio_pci.h"
#include "virtqueue.h"
#include "virtio_rxtx.h"
#include "virtio_user/virtio_user_dev.h"
#include "virtio_user/vhost.h"
#define virtio_user_get_dev(hw) \
((struct virtio_user_dev *)(hw)->virtio_user_dev)
static void
virtio_user_reset_queues_packed(struct rte_eth_dev *dev)
{
struct virtio_hw *hw = dev->data->dev_private;
struct virtnet_rx *rxvq;
struct virtnet_tx *txvq;
uint16_t i;
/* Add lock to avoid queue contention. */
rte_spinlock_lock(&hw->state_lock);
hw->started = 0;
/*
* Waitting for datapath to complete before resetting queues.
* 1 ms should be enough for the ongoing Tx/Rx function to finish.
*/
rte_delay_ms(1);
/* Vring reset for each Tx queue and Rx queue. */
for (i = 0; i < dev->data->nb_rx_queues; i++) {
rxvq = dev->data->rx_queues[i];
virtqueue_rxvq_reset_packed(rxvq->vq);
virtio_dev_rx_queue_setup_finish(dev, i);
}
for (i = 0; i < dev->data->nb_tx_queues; i++) {
txvq = dev->data->tx_queues[i];
virtqueue_txvq_reset_packed(txvq->vq);
}
hw->started = 1;
rte_spinlock_unlock(&hw->state_lock);
}
static int
virtio_user_server_reconnect(struct virtio_user_dev *dev)
{
int ret;
int connectfd;
struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
struct virtio_hw *hw = eth_dev->data->dev_private;
connectfd = accept(dev->listenfd, NULL, NULL);
if (connectfd < 0)
return -1;
dev->vhostfd = connectfd;
if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
&dev->device_features) < 0) {
PMD_INIT_LOG(ERR, "get_features failed: %s",
strerror(errno));
return -1;
}
dev->device_features |= dev->frontend_features;
/* umask vhost-user unsupported features */
dev->device_features &= ~(dev->unsupported_features);
dev->features &= dev->device_features;
/* For packed ring, resetting queues is required in reconnection. */
if (vtpci_packed_queue(hw)) {
PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
" when packed ring reconnecting.");
virtio_user_reset_queues_packed(eth_dev);
}
ret = virtio_user_start_device(dev);
if (ret < 0)
return -1;
if (dev->queue_pairs > 1) {
ret = virtio_user_handle_mq(dev, dev->queue_pairs);
if (ret != 0) {
PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!");
return -1;
}
}
if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
if (rte_intr_disable(eth_dev->intr_handle) < 0) {
PMD_DRV_LOG(ERR, "interrupt disable failed");
return -1;
}
rte_intr_callback_unregister(eth_dev->intr_handle,
virtio_interrupt_handler,
eth_dev);
eth_dev->intr_handle->fd = connectfd;
rte_intr_callback_register(eth_dev->intr_handle,
virtio_interrupt_handler, eth_dev);
if (rte_intr_enable(eth_dev->intr_handle) < 0) {
PMD_DRV_LOG(ERR, "interrupt enable failed");
return -1;
}
}
PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
return 0;
}
static void
virtio_user_delayed_handler(void *param)
{
struct virtio_hw *hw = (struct virtio_hw *)param;
struct rte_eth_dev *eth_dev = &rte_eth_devices[hw->port_id];
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (rte_intr_disable(eth_dev->intr_handle) < 0) {
PMD_DRV_LOG(ERR, "interrupt disable failed");
return;
}
rte_intr_callback_unregister(eth_dev->intr_handle,
virtio_interrupt_handler, eth_dev);
if (dev->is_server) {
if (dev->vhostfd >= 0) {
close(dev->vhostfd);
dev->vhostfd = -1;
}
eth_dev->intr_handle->fd = dev->listenfd;
rte_intr_callback_register(eth_dev->intr_handle,
virtio_interrupt_handler, eth_dev);
if (rte_intr_enable(eth_dev->intr_handle) < 0) {
PMD_DRV_LOG(ERR, "interrupt enable failed");
return;
}
}
}
static void
virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset,
void *dst, int length)
{
int i;
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (offset == offsetof(struct virtio_net_config, mac) &&
length == RTE_ETHER_ADDR_LEN) {
for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
((uint8_t *)dst)[i] = dev->mac_addr[i];
return;
}
if (offset == offsetof(struct virtio_net_config, status)) {
char buf[128];
if (dev->vhostfd >= 0) {
int r;
int flags;
flags = fcntl(dev->vhostfd, F_GETFL);
if (fcntl(dev->vhostfd, F_SETFL,
flags | O_NONBLOCK) == -1) {
PMD_DRV_LOG(ERR, "error setting O_NONBLOCK flag");
return;
}
r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
if (r == 0 || (r < 0 && errno != EAGAIN)) {
dev->status &= (~VIRTIO_NET_S_LINK_UP);
PMD_DRV_LOG(ERR, "virtio-user port %u is down",
hw->port_id);
/* This function could be called in the process
* of interrupt handling, callback cannot be
* unregistered here, set an alarm to do it.
*/
rte_eal_alarm_set(1,
virtio_user_delayed_handler,
(void *)hw);
} else {
dev->status |= VIRTIO_NET_S_LINK_UP;
}
if (fcntl(dev->vhostfd, F_SETFL,
flags & ~O_NONBLOCK) == -1) {
PMD_DRV_LOG(ERR, "error clearing O_NONBLOCK flag");
return;
}
} else if (dev->is_server) {
dev->status &= (~VIRTIO_NET_S_LINK_UP);
if (virtio_user_server_reconnect(dev) >= 0)
dev->status |= VIRTIO_NET_S_LINK_UP;
}
*(uint16_t *)dst = dev->status;
}
if (offset == offsetof(struct virtio_net_config, max_virtqueue_pairs))
*(uint16_t *)dst = dev->max_queue_pairs;
}
static void
virtio_user_write_dev_config(struct virtio_hw *hw, size_t offset,
const void *src, int length)
{
int i;
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if ((offset == offsetof(struct virtio_net_config, mac)) &&
(length == RTE_ETHER_ADDR_LEN))
for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
dev->mac_addr[i] = ((const uint8_t *)src)[i];
else
PMD_DRV_LOG(ERR, "not supported offset=%zu, len=%d",
offset, length);
}
static void
virtio_user_reset(struct virtio_hw *hw)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
virtio_user_stop_device(dev);
}
static void
virtio_user_set_status(struct virtio_hw *hw, uint8_t status)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
virtio_user_start_device(dev);
else if (status == VIRTIO_CONFIG_STATUS_RESET)
virtio_user_reset(hw);
dev->status = status;
}
static uint8_t
virtio_user_get_status(struct virtio_hw *hw)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
return dev->status;
}
static uint64_t
virtio_user_get_features(struct virtio_hw *hw)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
/* unmask feature bits defined in vhost user protocol */
return dev->device_features & VIRTIO_PMD_SUPPORTED_GUEST_FEATURES;
}
static void
virtio_user_set_features(struct virtio_hw *hw, uint64_t features)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
dev->features = features & dev->device_features;
}
static uint8_t
virtio_user_get_isr(struct virtio_hw *hw __rte_unused)
{
/* rxq interrupts and config interrupt are separated in virtio-user,
* here we only report config change.
*/
return VIRTIO_PCI_ISR_CONFIG;
}
static uint16_t
virtio_user_set_config_irq(struct virtio_hw *hw __rte_unused,
uint16_t vec __rte_unused)
{
return 0;
}
static uint16_t
virtio_user_set_queue_irq(struct virtio_hw *hw __rte_unused,
struct virtqueue *vq __rte_unused,
uint16_t vec)
{
/* pretend we have done that */
return vec;
}
/* This function is to get the queue size, aka, number of descs, of a specified
* queue. Different with the VHOST_USER_GET_QUEUE_NUM, which is used to get the
* max supported queues.
*/
static uint16_t
virtio_user_get_queue_num(struct virtio_hw *hw, uint16_t queue_id __rte_unused)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
/* Currently, each queue has same queue size */
return dev->queue_size;
}
static void
virtio_user_setup_queue_packed(struct virtqueue *vq,
struct virtio_user_dev *dev)
{
uint16_t queue_idx = vq->vq_queue_index;
struct vring_packed *vring;
uint64_t desc_addr;
uint64_t avail_addr;
uint64_t used_addr;
uint16_t i;
vring = &dev->packed_vrings[queue_idx];
desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
avail_addr = desc_addr + vq->vq_nentries *
sizeof(struct vring_packed_desc);
used_addr = RTE_ALIGN_CEIL(avail_addr +
sizeof(struct vring_packed_desc_event),
VIRTIO_PCI_VRING_ALIGN);
vring->num = vq->vq_nentries;
vring->desc = (void *)(uintptr_t)desc_addr;
vring->driver = (void *)(uintptr_t)avail_addr;
vring->device = (void *)(uintptr_t)used_addr;
dev->packed_queues[queue_idx].avail_wrap_counter = true;
dev->packed_queues[queue_idx].used_wrap_counter = true;
for (i = 0; i < vring->num; i++)
vring->desc[i].flags = 0;
}
static void
virtio_user_setup_queue_split(struct virtqueue *vq, struct virtio_user_dev *dev)
{
uint16_t queue_idx = vq->vq_queue_index;
uint64_t desc_addr, avail_addr, used_addr;
desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc);
used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail,
ring[vq->vq_nentries]),
VIRTIO_PCI_VRING_ALIGN);
dev->vrings[queue_idx].num = vq->vq_nentries;
dev->vrings[queue_idx].desc = (void *)(uintptr_t)desc_addr;
dev->vrings[queue_idx].avail = (void *)(uintptr_t)avail_addr;
dev->vrings[queue_idx].used = (void *)(uintptr_t)used_addr;
}
static int
virtio_user_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (vtpci_packed_queue(hw))
virtio_user_setup_queue_packed(vq, dev);
else
virtio_user_setup_queue_split(vq, dev);
return 0;
}
static void
virtio_user_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
{
/* For legacy devices, write 0 to VIRTIO_PCI_QUEUE_PFN port, QEMU
* correspondingly stops the ioeventfds, and reset the status of
* the device.
* For modern devices, set queue desc, avail, used in PCI bar to 0,
* not see any more behavior in QEMU.
*
* Here we just care about what information to deliver to vhost-user
* or vhost-kernel. So we just close ioeventfd for now.
*/
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
close(dev->callfds[vq->vq_queue_index]);
close(dev->kickfds[vq->vq_queue_index]);
}
static void
virtio_user_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
{
uint64_t buf = 1;
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
if (hw->cvq && (hw->cvq->vq == vq)) {
if (vtpci_packed_queue(vq->hw))
virtio_user_handle_cq_packed(dev, vq->vq_queue_index);
else
virtio_user_handle_cq(dev, vq->vq_queue_index);
return;
}
if (write(dev->kickfds[vq->vq_queue_index], &buf, sizeof(buf)) < 0)
PMD_DRV_LOG(ERR, "failed to kick backend: %s",
strerror(errno));
}
const struct virtio_pci_ops virtio_user_ops = {
.read_dev_cfg = virtio_user_read_dev_config,
.write_dev_cfg = virtio_user_write_dev_config,
.get_status = virtio_user_get_status,
.set_status = virtio_user_set_status,
.get_features = virtio_user_get_features,
.set_features = virtio_user_set_features,
.get_isr = virtio_user_get_isr,
.set_config_irq = virtio_user_set_config_irq,
.set_queue_irq = virtio_user_set_queue_irq,
.get_queue_num = virtio_user_get_queue_num,
.setup_queue = virtio_user_setup_queue,
.del_queue = virtio_user_del_queue,
.notify_queue = virtio_user_notify_queue,
};
static const char *valid_args[] = {
#define VIRTIO_USER_ARG_QUEUES_NUM "queues"
VIRTIO_USER_ARG_QUEUES_NUM,
#define VIRTIO_USER_ARG_CQ_NUM "cq"
VIRTIO_USER_ARG_CQ_NUM,
#define VIRTIO_USER_ARG_MAC "mac"
VIRTIO_USER_ARG_MAC,
#define VIRTIO_USER_ARG_PATH "path"
VIRTIO_USER_ARG_PATH,
#define VIRTIO_USER_ARG_QUEUE_SIZE "queue_size"
VIRTIO_USER_ARG_QUEUE_SIZE,
#define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
VIRTIO_USER_ARG_INTERFACE_NAME,
#define VIRTIO_USER_ARG_SERVER_MODE "server"
VIRTIO_USER_ARG_SERVER_MODE,
#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf"
VIRTIO_USER_ARG_MRG_RXBUF,
#define VIRTIO_USER_ARG_IN_ORDER "in_order"
VIRTIO_USER_ARG_IN_ORDER,
#define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
VIRTIO_USER_ARG_PACKED_VQ,
#define VIRTIO_USER_ARG_SPEED "speed"
VIRTIO_USER_ARG_SPEED,
NULL
};
#define VIRTIO_USER_DEF_CQ_EN 0
#define VIRTIO_USER_DEF_Q_NUM 1
#define VIRTIO_USER_DEF_Q_SZ 256
#define VIRTIO_USER_DEF_SERVER_MODE 0
static int
get_string_arg(const char *key __rte_unused,
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;
}
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);
}
/* 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>");