numam-dpdk/lib/librte_vhost/vhost_user.c
Fan Zhang e80a987081 vhost/crypto: add session message handler
This patch adds session message handler to vhost crypto.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Jay Zhou <jianjay.zhou@huawei.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2018-04-14 00:43:30 +02:00

1704 lines
41 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
/* Security model
* --------------
* The vhost-user protocol connection is an external interface, so it must be
* robust against invalid inputs.
*
* This is important because the vhost-user master is only one step removed
* from the guest. Malicious guests that have escaped will then launch further
* attacks from the vhost-user master.
*
* Even in deployments where guests are trusted, a bug in the vhost-user master
* can still cause invalid messages to be sent. Such messages must not
* compromise the stability of the DPDK application by causing crashes, memory
* corruption, or other problematic behavior.
*
* Do not assume received VhostUserMsg fields contain sensible values!
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#ifdef RTE_LIBRTE_VHOST_NUMA
#include <numaif.h>
#endif
#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_log.h>
#include "iotlb.h"
#include "vhost.h"
#include "vhost_user.h"
#define VIRTIO_MIN_MTU 68
#define VIRTIO_MAX_MTU 65535
static const char *vhost_message_str[VHOST_USER_MAX] = {
[VHOST_USER_NONE] = "VHOST_USER_NONE",
[VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
[VHOST_USER_SET_FEATURES] = "VHOST_USER_SET_FEATURES",
[VHOST_USER_SET_OWNER] = "VHOST_USER_SET_OWNER",
[VHOST_USER_RESET_OWNER] = "VHOST_USER_RESET_OWNER",
[VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
[VHOST_USER_SET_LOG_BASE] = "VHOST_USER_SET_LOG_BASE",
[VHOST_USER_SET_LOG_FD] = "VHOST_USER_SET_LOG_FD",
[VHOST_USER_SET_VRING_NUM] = "VHOST_USER_SET_VRING_NUM",
[VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
[VHOST_USER_SET_VRING_BASE] = "VHOST_USER_SET_VRING_BASE",
[VHOST_USER_GET_VRING_BASE] = "VHOST_USER_GET_VRING_BASE",
[VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
[VHOST_USER_SET_VRING_CALL] = "VHOST_USER_SET_VRING_CALL",
[VHOST_USER_SET_VRING_ERR] = "VHOST_USER_SET_VRING_ERR",
[VHOST_USER_GET_PROTOCOL_FEATURES] = "VHOST_USER_GET_PROTOCOL_FEATURES",
[VHOST_USER_SET_PROTOCOL_FEATURES] = "VHOST_USER_SET_PROTOCOL_FEATURES",
[VHOST_USER_GET_QUEUE_NUM] = "VHOST_USER_GET_QUEUE_NUM",
[VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
[VHOST_USER_SEND_RARP] = "VHOST_USER_SEND_RARP",
[VHOST_USER_NET_SET_MTU] = "VHOST_USER_NET_SET_MTU",
[VHOST_USER_SET_SLAVE_REQ_FD] = "VHOST_USER_SET_SLAVE_REQ_FD",
[VHOST_USER_IOTLB_MSG] = "VHOST_USER_IOTLB_MSG",
[VHOST_USER_CRYPTO_CREATE_SESS] = "VHOST_USER_CRYPTO_CREATE_SESS",
[VHOST_USER_CRYPTO_CLOSE_SESS] = "VHOST_USER_CRYPTO_CLOSE_SESS",
};
static uint64_t
get_blk_size(int fd)
{
struct stat stat;
int ret;
ret = fstat(fd, &stat);
return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
}
static void
free_mem_region(struct virtio_net *dev)
{
uint32_t i;
struct rte_vhost_mem_region *reg;
if (!dev || !dev->mem)
return;
for (i = 0; i < dev->mem->nregions; i++) {
reg = &dev->mem->regions[i];
if (reg->host_user_addr) {
munmap(reg->mmap_addr, reg->mmap_size);
close(reg->fd);
}
}
}
void
vhost_backend_cleanup(struct virtio_net *dev)
{
if (dev->mem) {
free_mem_region(dev);
rte_free(dev->mem);
dev->mem = NULL;
}
free(dev->guest_pages);
dev->guest_pages = NULL;
if (dev->log_addr) {
munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
dev->log_addr = 0;
}
if (dev->slave_req_fd >= 0) {
close(dev->slave_req_fd);
dev->slave_req_fd = -1;
}
}
/*
* This function just returns success at the moment unless
* the device hasn't been initialised.
*/
static int
vhost_user_set_owner(void)
{
return 0;
}
static int
vhost_user_reset_owner(struct virtio_net *dev)
{
struct rte_vdpa_device *vdpa_dev;
int did = -1;
if (dev->flags & VIRTIO_DEV_RUNNING) {
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && vdpa_dev->ops->dev_close)
vdpa_dev->ops->dev_close(dev->vid);
dev->flags &= ~VIRTIO_DEV_RUNNING;
dev->notify_ops->destroy_device(dev->vid);
}
cleanup_device(dev, 0);
reset_device(dev);
return 0;
}
/*
* The features that we support are requested.
*/
static uint64_t
vhost_user_get_features(struct virtio_net *dev)
{
uint64_t features = 0;
rte_vhost_driver_get_features(dev->ifname, &features);
return features;
}
/*
* The queue number that we support are requested.
*/
static uint32_t
vhost_user_get_queue_num(struct virtio_net *dev)
{
uint32_t queue_num = 0;
rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
return queue_num;
}
/*
* We receive the negotiated features supported by us and the virtio device.
*/
static int
vhost_user_set_features(struct virtio_net *dev, uint64_t features)
{
uint64_t vhost_features = 0;
struct rte_vdpa_device *vdpa_dev;
int did = -1;
rte_vhost_driver_get_features(dev->ifname, &vhost_features);
if (features & ~vhost_features) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) received invalid negotiated features.\n",
dev->vid);
return -1;
}
if (dev->flags & VIRTIO_DEV_RUNNING) {
if (dev->features == features)
return 0;
/*
* Error out if master tries to change features while device is
* in running state. The exception being VHOST_F_LOG_ALL, which
* is enabled when the live-migration starts.
*/
if ((dev->features ^ features) & ~(1ULL << VHOST_F_LOG_ALL)) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) features changed while device is running.\n",
dev->vid);
return -1;
}
if (dev->notify_ops->features_changed)
dev->notify_ops->features_changed(dev->vid, features);
}
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && vdpa_dev->ops->set_features)
vdpa_dev->ops->set_features(dev->vid);
dev->features = features;
if (dev->features &
((1 << VIRTIO_NET_F_MRG_RXBUF) | (1ULL << VIRTIO_F_VERSION_1))) {
dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
dev->vhost_hlen = sizeof(struct virtio_net_hdr);
}
VHOST_LOG_DEBUG(VHOST_CONFIG,
"(%d) mergeable RX buffers %s, virtio 1 %s\n",
dev->vid,
(dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
(dev->features & (1ULL << VIRTIO_F_VERSION_1)) ? "on" : "off");
if ((dev->flags & VIRTIO_DEV_BUILTIN_VIRTIO_NET) &&
!(dev->features & (1ULL << VIRTIO_NET_F_MQ))) {
/*
* Remove all but first queue pair if MQ hasn't been
* negotiated. This is safe because the device is not
* running at this stage.
*/
while (dev->nr_vring > 2) {
struct vhost_virtqueue *vq;
vq = dev->virtqueue[--dev->nr_vring];
if (!vq)
continue;
dev->virtqueue[dev->nr_vring] = NULL;
cleanup_vq(vq, 1);
free_vq(vq);
}
}
return 0;
}
/*
* The virtio device sends us the size of the descriptor ring.
*/
static int
vhost_user_set_vring_num(struct virtio_net *dev,
VhostUserMsg *msg)
{
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
vq->size = msg->payload.state.num;
/* VIRTIO 1.0, 2.4 Virtqueues says:
*
* Queue Size value is always a power of 2. The maximum Queue Size
* value is 32768.
*/
if ((vq->size & (vq->size - 1)) || vq->size > 32768) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid virtqueue size %u\n", vq->size);
return -1;
}
if (dev->dequeue_zero_copy) {
vq->nr_zmbuf = 0;
vq->last_zmbuf_idx = 0;
vq->zmbuf_size = vq->size;
vq->zmbufs = rte_zmalloc(NULL, vq->zmbuf_size *
sizeof(struct zcopy_mbuf), 0);
if (vq->zmbufs == NULL) {
RTE_LOG(WARNING, VHOST_CONFIG,
"failed to allocate mem for zero copy; "
"zero copy is force disabled\n");
dev->dequeue_zero_copy = 0;
}
TAILQ_INIT(&vq->zmbuf_list);
}
vq->shadow_used_ring = rte_malloc(NULL,
vq->size * sizeof(struct vring_used_elem),
RTE_CACHE_LINE_SIZE);
if (!vq->shadow_used_ring) {
RTE_LOG(ERR, VHOST_CONFIG,
"failed to allocate memory for shadow used ring.\n");
return -1;
}
vq->batch_copy_elems = rte_malloc(NULL,
vq->size * sizeof(struct batch_copy_elem),
RTE_CACHE_LINE_SIZE);
if (!vq->batch_copy_elems) {
RTE_LOG(ERR, VHOST_CONFIG,
"failed to allocate memory for batching copy.\n");
return -1;
}
return 0;
}
/*
* Reallocate virtio_dev and vhost_virtqueue data structure to make them on the
* same numa node as the memory of vring descriptor.
*/
#ifdef RTE_LIBRTE_VHOST_NUMA
static struct virtio_net*
numa_realloc(struct virtio_net *dev, int index)
{
int oldnode, newnode;
struct virtio_net *old_dev;
struct vhost_virtqueue *old_vq, *vq;
struct zcopy_mbuf *new_zmbuf;
struct vring_used_elem *new_shadow_used_ring;
struct batch_copy_elem *new_batch_copy_elems;
int ret;
old_dev = dev;
vq = old_vq = dev->virtqueue[index];
ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc,
MPOL_F_NODE | MPOL_F_ADDR);
/* check if we need to reallocate vq */
ret |= get_mempolicy(&oldnode, NULL, 0, old_vq,
MPOL_F_NODE | MPOL_F_ADDR);
if (ret) {
RTE_LOG(ERR, VHOST_CONFIG,
"Unable to get vq numa information.\n");
return dev;
}
if (oldnode != newnode) {
RTE_LOG(INFO, VHOST_CONFIG,
"reallocate vq from %d to %d node\n", oldnode, newnode);
vq = rte_malloc_socket(NULL, sizeof(*vq), 0, newnode);
if (!vq)
return dev;
memcpy(vq, old_vq, sizeof(*vq));
TAILQ_INIT(&vq->zmbuf_list);
new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size *
sizeof(struct zcopy_mbuf), 0, newnode);
if (new_zmbuf) {
rte_free(vq->zmbufs);
vq->zmbufs = new_zmbuf;
}
new_shadow_used_ring = rte_malloc_socket(NULL,
vq->size * sizeof(struct vring_used_elem),
RTE_CACHE_LINE_SIZE,
newnode);
if (new_shadow_used_ring) {
rte_free(vq->shadow_used_ring);
vq->shadow_used_ring = new_shadow_used_ring;
}
new_batch_copy_elems = rte_malloc_socket(NULL,
vq->size * sizeof(struct batch_copy_elem),
RTE_CACHE_LINE_SIZE,
newnode);
if (new_batch_copy_elems) {
rte_free(vq->batch_copy_elems);
vq->batch_copy_elems = new_batch_copy_elems;
}
rte_free(old_vq);
}
/* check if we need to reallocate dev */
ret = get_mempolicy(&oldnode, NULL, 0, old_dev,
MPOL_F_NODE | MPOL_F_ADDR);
if (ret) {
RTE_LOG(ERR, VHOST_CONFIG,
"Unable to get dev numa information.\n");
goto out;
}
if (oldnode != newnode) {
RTE_LOG(INFO, VHOST_CONFIG,
"reallocate dev from %d to %d node\n",
oldnode, newnode);
dev = rte_malloc_socket(NULL, sizeof(*dev), 0, newnode);
if (!dev) {
dev = old_dev;
goto out;
}
memcpy(dev, old_dev, sizeof(*dev));
rte_free(old_dev);
}
out:
dev->virtqueue[index] = vq;
vhost_devices[dev->vid] = dev;
if (old_vq != vq)
vhost_user_iotlb_init(dev, index);
return dev;
}
#else
static struct virtio_net*
numa_realloc(struct virtio_net *dev, int index __rte_unused)
{
return dev;
}
#endif
/* Converts QEMU virtual address to Vhost virtual address. */
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qva)
{
struct rte_vhost_mem_region *reg;
uint32_t i;
/* Find the region where the address lives. */
for (i = 0; i < dev->mem->nregions; i++) {
reg = &dev->mem->regions[i];
if (qva >= reg->guest_user_addr &&
qva < reg->guest_user_addr + reg->size) {
return qva - reg->guest_user_addr +
reg->host_user_addr;
}
}
return 0;
}
/*
* Converts ring address to Vhost virtual address.
* If IOMMU is enabled, the ring address is a guest IO virtual address,
* else it is a QEMU virtual address.
*/
static uint64_t
ring_addr_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
uint64_t ra, uint64_t size)
{
if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
uint64_t vva;
vva = vhost_user_iotlb_cache_find(vq, ra,
&size, VHOST_ACCESS_RW);
if (!vva)
vhost_user_iotlb_miss(dev, ra, VHOST_ACCESS_RW);
return vva;
}
return qva_to_vva(dev, ra);
}
static struct virtio_net *
translate_ring_addresses(struct virtio_net *dev, int vq_index)
{
struct vhost_virtqueue *vq = dev->virtqueue[vq_index];
struct vhost_vring_addr *addr = &vq->ring_addrs;
/* The addresses are converted from QEMU virtual to Vhost virtual. */
if (vq->desc && vq->avail && vq->used)
return dev;
vq->desc = (struct vring_desc *)(uintptr_t)ring_addr_to_vva(dev,
vq, addr->desc_user_addr, sizeof(struct vring_desc));
if (vq->desc == 0) {
RTE_LOG(DEBUG, VHOST_CONFIG,
"(%d) failed to find desc ring address.\n",
dev->vid);
return dev;
}
dev = numa_realloc(dev, vq_index);
vq = dev->virtqueue[vq_index];
addr = &vq->ring_addrs;
vq->avail = (struct vring_avail *)(uintptr_t)ring_addr_to_vva(dev,
vq, addr->avail_user_addr, sizeof(struct vring_avail));
if (vq->avail == 0) {
RTE_LOG(DEBUG, VHOST_CONFIG,
"(%d) failed to find avail ring address.\n",
dev->vid);
return dev;
}
vq->used = (struct vring_used *)(uintptr_t)ring_addr_to_vva(dev,
vq, addr->used_user_addr, sizeof(struct vring_used));
if (vq->used == 0) {
RTE_LOG(DEBUG, VHOST_CONFIG,
"(%d) failed to find used ring address.\n",
dev->vid);
return dev;
}
if (vq->last_used_idx != vq->used->idx) {
RTE_LOG(WARNING, VHOST_CONFIG,
"last_used_idx (%u) and vq->used->idx (%u) mismatches; "
"some packets maybe resent for Tx and dropped for Rx\n",
vq->last_used_idx, vq->used->idx);
vq->last_used_idx = vq->used->idx;
vq->last_avail_idx = vq->used->idx;
}
vq->log_guest_addr = addr->log_guest_addr;
VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
dev->vid, vq->desc);
VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
dev->vid, vq->avail);
VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
dev->vid, vq->used);
VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
dev->vid, vq->log_guest_addr);
return dev;
}
/*
* The virtio device sends us the desc, used and avail ring addresses.
* This function then converts these to our address space.
*/
static int
vhost_user_set_vring_addr(struct virtio_net **pdev, VhostUserMsg *msg)
{
struct vhost_virtqueue *vq;
struct vhost_vring_addr *addr = &msg->payload.addr;
struct virtio_net *dev = *pdev;
if (dev->mem == NULL)
return -1;
/* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[msg->payload.addr.index];
/*
* Rings addresses should not be interpreted as long as the ring is not
* started and enabled
*/
memcpy(&vq->ring_addrs, addr, sizeof(*addr));
vring_invalidate(dev, vq);
if (vq->enabled && (dev->features &
(1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
dev = translate_ring_addresses(dev, msg->payload.addr.index);
if (!dev)
return -1;
*pdev = dev;
}
return 0;
}
/*
* The virtio device sends us the available ring last used index.
*/
static int
vhost_user_set_vring_base(struct virtio_net *dev,
VhostUserMsg *msg)
{
dev->virtqueue[msg->payload.state.index]->last_used_idx =
msg->payload.state.num;
dev->virtqueue[msg->payload.state.index]->last_avail_idx =
msg->payload.state.num;
return 0;
}
static int
add_one_guest_page(struct virtio_net *dev, uint64_t guest_phys_addr,
uint64_t host_phys_addr, uint64_t size)
{
struct guest_page *page, *last_page;
if (dev->nr_guest_pages == dev->max_guest_pages) {
dev->max_guest_pages *= 2;
dev->guest_pages = realloc(dev->guest_pages,
dev->max_guest_pages * sizeof(*page));
if (!dev->guest_pages) {
RTE_LOG(ERR, VHOST_CONFIG, "cannot realloc guest_pages\n");
return -1;
}
}
if (dev->nr_guest_pages > 0) {
last_page = &dev->guest_pages[dev->nr_guest_pages - 1];
/* merge if the two pages are continuous */
if (host_phys_addr == last_page->host_phys_addr +
last_page->size) {
last_page->size += size;
return 0;
}
}
page = &dev->guest_pages[dev->nr_guest_pages++];
page->guest_phys_addr = guest_phys_addr;
page->host_phys_addr = host_phys_addr;
page->size = size;
return 0;
}
static int
add_guest_pages(struct virtio_net *dev, struct rte_vhost_mem_region *reg,
uint64_t page_size)
{
uint64_t reg_size = reg->size;
uint64_t host_user_addr = reg->host_user_addr;
uint64_t guest_phys_addr = reg->guest_phys_addr;
uint64_t host_phys_addr;
uint64_t size;
host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)host_user_addr);
size = page_size - (guest_phys_addr & (page_size - 1));
size = RTE_MIN(size, reg_size);
if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size) < 0)
return -1;
host_user_addr += size;
guest_phys_addr += size;
reg_size -= size;
while (reg_size > 0) {
size = RTE_MIN(reg_size, page_size);
host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)
host_user_addr);
if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr,
size) < 0)
return -1;
host_user_addr += size;
guest_phys_addr += size;
reg_size -= size;
}
return 0;
}
#ifdef RTE_LIBRTE_VHOST_DEBUG
/* TODO: enable it only in debug mode? */
static void
dump_guest_pages(struct virtio_net *dev)
{
uint32_t i;
struct guest_page *page;
for (i = 0; i < dev->nr_guest_pages; i++) {
page = &dev->guest_pages[i];
RTE_LOG(INFO, VHOST_CONFIG,
"guest physical page region %u\n"
"\t guest_phys_addr: %" PRIx64 "\n"
"\t host_phys_addr : %" PRIx64 "\n"
"\t size : %" PRIx64 "\n",
i,
page->guest_phys_addr,
page->host_phys_addr,
page->size);
}
}
#else
#define dump_guest_pages(dev)
#endif
static bool
vhost_memory_changed(struct VhostUserMemory *new,
struct rte_vhost_memory *old)
{
uint32_t i;
if (new->nregions != old->nregions)
return true;
for (i = 0; i < new->nregions; ++i) {
VhostUserMemoryRegion *new_r = &new->regions[i];
struct rte_vhost_mem_region *old_r = &old->regions[i];
if (new_r->guest_phys_addr != old_r->guest_phys_addr)
return true;
if (new_r->memory_size != old_r->size)
return true;
if (new_r->userspace_addr != old_r->guest_user_addr)
return true;
}
return false;
}
static int
vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
{
struct VhostUserMemory memory = pmsg->payload.memory;
struct rte_vhost_mem_region *reg;
void *mmap_addr;
uint64_t mmap_size;
uint64_t mmap_offset;
uint64_t alignment;
uint32_t i;
int populate;
int fd;
if (memory.nregions > VHOST_MEMORY_MAX_NREGIONS) {
RTE_LOG(ERR, VHOST_CONFIG,
"too many memory regions (%u)\n", memory.nregions);
return -1;
}
if (dev->mem && !vhost_memory_changed(&memory, dev->mem)) {
RTE_LOG(INFO, VHOST_CONFIG,
"(%d) memory regions not changed\n", dev->vid);
for (i = 0; i < memory.nregions; i++)
close(pmsg->fds[i]);
return 0;
}
if (dev->mem) {
free_mem_region(dev);
rte_free(dev->mem);
dev->mem = NULL;
}
dev->nr_guest_pages = 0;
if (!dev->guest_pages) {
dev->max_guest_pages = 8;
dev->guest_pages = malloc(dev->max_guest_pages *
sizeof(struct guest_page));
if (dev->guest_pages == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) failed to allocate memory "
"for dev->guest_pages\n",
dev->vid);
return -1;
}
}
dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +
sizeof(struct rte_vhost_mem_region) * memory.nregions, 0);
if (dev->mem == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) failed to allocate memory for dev->mem\n",
dev->vid);
return -1;
}
dev->mem->nregions = memory.nregions;
for (i = 0; i < memory.nregions; i++) {
fd = pmsg->fds[i];
reg = &dev->mem->regions[i];
reg->guest_phys_addr = memory.regions[i].guest_phys_addr;
reg->guest_user_addr = memory.regions[i].userspace_addr;
reg->size = memory.regions[i].memory_size;
reg->fd = fd;
mmap_offset = memory.regions[i].mmap_offset;
/* Check for memory_size + mmap_offset overflow */
if (mmap_offset >= -reg->size) {
RTE_LOG(ERR, VHOST_CONFIG,
"mmap_offset (%#"PRIx64") and memory_size "
"(%#"PRIx64") overflow\n",
mmap_offset, reg->size);
goto err_mmap;
}
mmap_size = reg->size + mmap_offset;
/* mmap() without flag of MAP_ANONYMOUS, should be called
* with length argument aligned with hugepagesz at older
* longterm version Linux, like 2.6.32 and 3.2.72, or
* mmap() will fail with EINVAL.
*
* to avoid failure, make sure in caller to keep length
* aligned.
*/
alignment = get_blk_size(fd);
if (alignment == (uint64_t)-1) {
RTE_LOG(ERR, VHOST_CONFIG,
"couldn't get hugepage size through fstat\n");
goto err_mmap;
}
mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
populate = (dev->dequeue_zero_copy) ? MAP_POPULATE : 0;
mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
MAP_SHARED | populate, fd, 0);
if (mmap_addr == MAP_FAILED) {
RTE_LOG(ERR, VHOST_CONFIG,
"mmap region %u failed.\n", i);
goto err_mmap;
}
reg->mmap_addr = mmap_addr;
reg->mmap_size = mmap_size;
reg->host_user_addr = (uint64_t)(uintptr_t)mmap_addr +
mmap_offset;
if (dev->dequeue_zero_copy)
if (add_guest_pages(dev, reg, alignment) < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"adding guest pages to region %u failed.\n",
i);
goto err_mmap;
}
RTE_LOG(INFO, VHOST_CONFIG,
"guest memory region %u, size: 0x%" PRIx64 "\n"
"\t guest physical addr: 0x%" PRIx64 "\n"
"\t guest virtual addr: 0x%" PRIx64 "\n"
"\t host virtual addr: 0x%" PRIx64 "\n"
"\t mmap addr : 0x%" PRIx64 "\n"
"\t mmap size : 0x%" PRIx64 "\n"
"\t mmap align: 0x%" PRIx64 "\n"
"\t mmap off : 0x%" PRIx64 "\n",
i, reg->size,
reg->guest_phys_addr,
reg->guest_user_addr,
reg->host_user_addr,
(uint64_t)(uintptr_t)mmap_addr,
mmap_size,
alignment,
mmap_offset);
}
dump_guest_pages(dev);
return 0;
err_mmap:
free_mem_region(dev);
rte_free(dev->mem);
dev->mem = NULL;
return -1;
}
static int
vq_is_ready(struct vhost_virtqueue *vq)
{
return vq && vq->desc && vq->avail && vq->used &&
vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD;
}
static int
virtio_is_ready(struct virtio_net *dev)
{
struct vhost_virtqueue *vq;
uint32_t i;
if (dev->nr_vring == 0)
return 0;
for (i = 0; i < dev->nr_vring; i++) {
vq = dev->virtqueue[i];
if (!vq_is_ready(vq))
return 0;
}
RTE_LOG(INFO, VHOST_CONFIG,
"virtio is now ready for processing.\n");
return 1;
}
static void
vhost_user_set_vring_call(struct virtio_net *dev, struct VhostUserMsg *pmsg)
{
struct vhost_vring_file file;
struct vhost_virtqueue *vq;
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
file.fd = VIRTIO_INVALID_EVENTFD;
else
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring call idx:%d file:%d\n", file.index, file.fd);
vq = dev->virtqueue[file.index];
if (vq->callfd >= 0)
close(vq->callfd);
vq->callfd = file.fd;
}
static void
vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *pmsg)
{
struct vhost_vring_file file;
struct vhost_virtqueue *vq;
struct virtio_net *dev = *pdev;
file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
file.fd = VIRTIO_INVALID_EVENTFD;
else
file.fd = pmsg->fds[0];
RTE_LOG(INFO, VHOST_CONFIG,
"vring kick idx:%d file:%d\n", file.index, file.fd);
/* Interpret ring addresses only when ring is started. */
dev = translate_ring_addresses(dev, file.index);
if (!dev)
return;
*pdev = dev;
vq = dev->virtqueue[file.index];
/*
* When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
* the ring starts already enabled. Otherwise, it is enabled via
* the SET_VRING_ENABLE message.
*/
if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
vq->enabled = 1;
if (vq->kickfd >= 0)
close(vq->kickfd);
vq->kickfd = file.fd;
}
static void
free_zmbufs(struct vhost_virtqueue *vq)
{
struct zcopy_mbuf *zmbuf, *next;
for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
zmbuf != NULL; zmbuf = next) {
next = TAILQ_NEXT(zmbuf, next);
rte_pktmbuf_free(zmbuf->mbuf);
TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
}
rte_free(vq->zmbufs);
}
/*
* when virtio is stopped, qemu will send us the GET_VRING_BASE message.
*/
static int
vhost_user_get_vring_base(struct virtio_net *dev,
VhostUserMsg *msg)
{
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
struct rte_vdpa_device *vdpa_dev;
int did = -1;
/* We have to stop the queue (virtio) if it is running. */
if (dev->flags & VIRTIO_DEV_RUNNING) {
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && vdpa_dev->ops->dev_close)
vdpa_dev->ops->dev_close(dev->vid);
dev->flags &= ~VIRTIO_DEV_RUNNING;
dev->notify_ops->destroy_device(dev->vid);
}
dev->flags &= ~VIRTIO_DEV_READY;
dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
/* Here we are safe to get the last avail index */
msg->payload.state.num = vq->last_avail_idx;
RTE_LOG(INFO, VHOST_CONFIG,
"vring base idx:%d file:%d\n", msg->payload.state.index,
msg->payload.state.num);
/*
* Based on current qemu vhost-user implementation, this message is
* sent and only sent in vhost_vring_stop.
* TODO: cleanup the vring, it isn't usable since here.
*/
if (vq->kickfd >= 0)
close(vq->kickfd);
vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
if (vq->callfd >= 0)
close(vq->callfd);
vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
if (dev->dequeue_zero_copy)
free_zmbufs(vq);
rte_free(vq->shadow_used_ring);
vq->shadow_used_ring = NULL;
rte_free(vq->batch_copy_elems);
vq->batch_copy_elems = NULL;
return 0;
}
/*
* when virtio queues are ready to work, qemu will send us to
* enable the virtio queue pair.
*/
static int
vhost_user_set_vring_enable(struct virtio_net *dev,
VhostUserMsg *msg)
{
int enable = (int)msg->payload.state.num;
int index = (int)msg->payload.state.index;
struct rte_vdpa_device *vdpa_dev;
int did = -1;
RTE_LOG(INFO, VHOST_CONFIG,
"set queue enable: %d to qp idx: %d\n",
enable, index);
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && vdpa_dev->ops->set_vring_state)
vdpa_dev->ops->set_vring_state(dev->vid, index, enable);
if (dev->notify_ops->vring_state_changed)
dev->notify_ops->vring_state_changed(dev->vid,
index, enable);
dev->virtqueue[index]->enabled = enable;
return 0;
}
static void
vhost_user_get_protocol_features(struct virtio_net *dev,
struct VhostUserMsg *msg)
{
uint64_t features, protocol_features;
rte_vhost_driver_get_features(dev->ifname, &features);
rte_vhost_driver_get_protocol_features(dev->ifname, &protocol_features);
/*
* REPLY_ACK protocol feature is only mandatory for now
* for IOMMU feature. If IOMMU is explicitly disabled by the
* application, disable also REPLY_ACK feature for older buggy
* Qemu versions (from v2.7.0 to v2.9.0).
*/
if (!(features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
protocol_features &= ~(1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK);
msg->payload.u64 = protocol_features;
msg->size = sizeof(msg->payload.u64);
}
static void
vhost_user_set_protocol_features(struct virtio_net *dev,
uint64_t protocol_features)
{
if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
return;
dev->protocol_features = protocol_features;
}
static int
vhost_user_set_log_base(struct virtio_net *dev, struct VhostUserMsg *msg)
{
int fd = msg->fds[0];
uint64_t size, off;
void *addr;
if (fd < 0) {
RTE_LOG(ERR, VHOST_CONFIG, "invalid log fd: %d\n", fd);
return -1;
}
if (msg->size != sizeof(VhostUserLog)) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid log base msg size: %"PRId32" != %d\n",
msg->size, (int)sizeof(VhostUserLog));
return -1;
}
size = msg->payload.log.mmap_size;
off = msg->payload.log.mmap_offset;
/* Don't allow mmap_offset to point outside the mmap region */
if (off > size) {
RTE_LOG(ERR, VHOST_CONFIG,
"log offset %#"PRIx64" exceeds log size %#"PRIx64"\n",
off, size);
return -1;
}
RTE_LOG(INFO, VHOST_CONFIG,
"log mmap size: %"PRId64", offset: %"PRId64"\n",
size, off);
/*
* mmap from 0 to workaround a hugepage mmap bug: mmap will
* fail when offset is not page size aligned.
*/
addr = mmap(0, size + off, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
close(fd);
if (addr == MAP_FAILED) {
RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
return -1;
}
/*
* Free previously mapped log memory on occasionally
* multiple VHOST_USER_SET_LOG_BASE.
*/
if (dev->log_addr) {
munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
}
dev->log_addr = (uint64_t)(uintptr_t)addr;
dev->log_base = dev->log_addr + off;
dev->log_size = size;
return 0;
}
/*
* An rarp packet is constructed and broadcasted to notify switches about
* the new location of the migrated VM, so that packets from outside will
* not be lost after migration.
*
* However, we don't actually "send" a rarp packet here, instead, we set
* a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
*/
static int
vhost_user_send_rarp(struct virtio_net *dev, struct VhostUserMsg *msg)
{
uint8_t *mac = (uint8_t *)&msg->payload.u64;
struct rte_vdpa_device *vdpa_dev;
int did = -1;
RTE_LOG(DEBUG, VHOST_CONFIG,
":: mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
memcpy(dev->mac.addr_bytes, mac, 6);
/*
* Set the flag to inject a RARP broadcast packet at
* rte_vhost_dequeue_burst().
*
* rte_smp_wmb() is for making sure the mac is copied
* before the flag is set.
*/
rte_smp_wmb();
rte_atomic16_set(&dev->broadcast_rarp, 1);
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && vdpa_dev->ops->migration_done)
vdpa_dev->ops->migration_done(dev->vid);
return 0;
}
static int
vhost_user_net_set_mtu(struct virtio_net *dev, struct VhostUserMsg *msg)
{
if (msg->payload.u64 < VIRTIO_MIN_MTU ||
msg->payload.u64 > VIRTIO_MAX_MTU) {
RTE_LOG(ERR, VHOST_CONFIG, "Invalid MTU size (%"PRIu64")\n",
msg->payload.u64);
return -1;
}
dev->mtu = msg->payload.u64;
return 0;
}
static int
vhost_user_set_req_fd(struct virtio_net *dev, struct VhostUserMsg *msg)
{
int fd = msg->fds[0];
if (fd < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"Invalid file descriptor for slave channel (%d)\n",
fd);
return -1;
}
dev->slave_req_fd = fd;
return 0;
}
static int
is_vring_iotlb_update(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
{
struct vhost_vring_addr *ra;
uint64_t start, end;
start = imsg->iova;
end = start + imsg->size;
ra = &vq->ring_addrs;
if (ra->desc_user_addr >= start && ra->desc_user_addr < end)
return 1;
if (ra->avail_user_addr >= start && ra->avail_user_addr < end)
return 1;
if (ra->used_user_addr >= start && ra->used_user_addr < end)
return 1;
return 0;
}
static int
is_vring_iotlb_invalidate(struct vhost_virtqueue *vq,
struct vhost_iotlb_msg *imsg)
{
uint64_t istart, iend, vstart, vend;
istart = imsg->iova;
iend = istart + imsg->size - 1;
vstart = (uintptr_t)vq->desc;
vend = vstart + sizeof(struct vring_desc) * vq->size - 1;
if (vstart <= iend && istart <= vend)
return 1;
vstart = (uintptr_t)vq->avail;
vend = vstart + sizeof(struct vring_avail);
vend += sizeof(uint16_t) * vq->size - 1;
if (vstart <= iend && istart <= vend)
return 1;
vstart = (uintptr_t)vq->used;
vend = vstart + sizeof(struct vring_used);
vend += sizeof(struct vring_used_elem) * vq->size - 1;
if (vstart <= iend && istart <= vend)
return 1;
return 0;
}
static int
vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg)
{
struct virtio_net *dev = *pdev;
struct vhost_iotlb_msg *imsg = &msg->payload.iotlb;
uint16_t i;
uint64_t vva;
switch (imsg->type) {
case VHOST_IOTLB_UPDATE:
vva = qva_to_vva(dev, imsg->uaddr);
if (!vva)
return -1;
for (i = 0; i < dev->nr_vring; i++) {
struct vhost_virtqueue *vq = dev->virtqueue[i];
vhost_user_iotlb_cache_insert(vq, imsg->iova, vva,
imsg->size, imsg->perm);
if (is_vring_iotlb_update(vq, imsg))
*pdev = dev = translate_ring_addresses(dev, i);
}
break;
case VHOST_IOTLB_INVALIDATE:
for (i = 0; i < dev->nr_vring; i++) {
struct vhost_virtqueue *vq = dev->virtqueue[i];
vhost_user_iotlb_cache_remove(vq, imsg->iova,
imsg->size);
if (is_vring_iotlb_invalidate(vq, imsg))
vring_invalidate(dev, vq);
}
break;
default:
RTE_LOG(ERR, VHOST_CONFIG, "Invalid IOTLB message type (%d)\n",
imsg->type);
return -1;
}
return 0;
}
/* return bytes# of read on success or negative val on failure. */
static int
read_vhost_message(int sockfd, struct VhostUserMsg *msg)
{
int ret;
ret = read_fd_message(sockfd, (char *)msg, VHOST_USER_HDR_SIZE,
msg->fds, VHOST_MEMORY_MAX_NREGIONS);
if (ret <= 0)
return ret;
if (msg && msg->size) {
if (msg->size > sizeof(msg->payload)) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid msg size: %d\n", msg->size);
return -1;
}
ret = read(sockfd, &msg->payload, msg->size);
if (ret <= 0)
return ret;
if (ret != (int)msg->size) {
RTE_LOG(ERR, VHOST_CONFIG,
"read control message failed\n");
return -1;
}
}
return ret;
}
static int
send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
{
if (!msg)
return 0;
return send_fd_message(sockfd, (char *)msg,
VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
}
static int
send_vhost_reply(int sockfd, struct VhostUserMsg *msg)
{
if (!msg)
return 0;
msg->flags &= ~VHOST_USER_VERSION_MASK;
msg->flags &= ~VHOST_USER_NEED_REPLY;
msg->flags |= VHOST_USER_VERSION;
msg->flags |= VHOST_USER_REPLY_MASK;
return send_vhost_message(sockfd, msg, NULL, 0);
}
/*
* Allocate a queue pair if it hasn't been allocated yet
*/
static int
vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev, VhostUserMsg *msg)
{
uint16_t vring_idx;
switch (msg->request.master) {
case VHOST_USER_SET_VRING_KICK:
case VHOST_USER_SET_VRING_CALL:
case VHOST_USER_SET_VRING_ERR:
vring_idx = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
break;
case VHOST_USER_SET_VRING_NUM:
case VHOST_USER_SET_VRING_BASE:
case VHOST_USER_SET_VRING_ENABLE:
vring_idx = msg->payload.state.index;
break;
case VHOST_USER_SET_VRING_ADDR:
vring_idx = msg->payload.addr.index;
break;
default:
return 0;
}
if (vring_idx >= VHOST_MAX_VRING) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid vring index: %u\n", vring_idx);
return -1;
}
if (dev->virtqueue[vring_idx])
return 0;
return alloc_vring_queue(dev, vring_idx);
}
static void
vhost_user_lock_all_queue_pairs(struct virtio_net *dev)
{
unsigned int i = 0;
unsigned int vq_num = 0;
while (vq_num < dev->nr_vring) {
struct vhost_virtqueue *vq = dev->virtqueue[i];
if (vq) {
rte_spinlock_lock(&vq->access_lock);
vq_num++;
}
i++;
}
}
static void
vhost_user_unlock_all_queue_pairs(struct virtio_net *dev)
{
unsigned int i = 0;
unsigned int vq_num = 0;
while (vq_num < dev->nr_vring) {
struct vhost_virtqueue *vq = dev->virtqueue[i];
if (vq) {
rte_spinlock_unlock(&vq->access_lock);
vq_num++;
}
i++;
}
}
int
vhost_user_msg_handler(int vid, int fd)
{
struct virtio_net *dev;
struct VhostUserMsg msg;
struct rte_vdpa_device *vdpa_dev;
int did = -1;
int ret;
int unlock_required = 0;
uint32_t skip_master = 0;
dev = get_device(vid);
if (dev == NULL)
return -1;
if (!dev->notify_ops) {
dev->notify_ops = vhost_driver_callback_get(dev->ifname);
if (!dev->notify_ops) {
RTE_LOG(ERR, VHOST_CONFIG,
"failed to get callback ops for driver %s\n",
dev->ifname);
return -1;
}
}
ret = read_vhost_message(fd, &msg);
if (ret <= 0 || msg.request.master >= VHOST_USER_MAX) {
if (ret < 0)
RTE_LOG(ERR, VHOST_CONFIG,
"vhost read message failed\n");
else if (ret == 0)
RTE_LOG(INFO, VHOST_CONFIG,
"vhost peer closed\n");
else
RTE_LOG(ERR, VHOST_CONFIG,
"vhost read incorrect message\n");
return -1;
}
ret = 0;
if (msg.request.master != VHOST_USER_IOTLB_MSG)
RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
vhost_message_str[msg.request.master]);
else
RTE_LOG(DEBUG, VHOST_CONFIG, "read message %s\n",
vhost_message_str[msg.request.master]);
ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
if (ret < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"failed to alloc queue\n");
return -1;
}
/*
* Note: we don't lock all queues on VHOST_USER_GET_VRING_BASE
* and VHOST_USER_RESET_OWNER, since it is sent when virtio stops
* and device is destroyed. destroy_device waits for queues to be
* inactive, so it is safe. Otherwise taking the access_lock
* would cause a dead lock.
*/
switch (msg.request.master) {
case VHOST_USER_SET_FEATURES:
case VHOST_USER_SET_PROTOCOL_FEATURES:
case VHOST_USER_SET_OWNER:
case VHOST_USER_SET_MEM_TABLE:
case VHOST_USER_SET_LOG_BASE:
case VHOST_USER_SET_LOG_FD:
case VHOST_USER_SET_VRING_NUM:
case VHOST_USER_SET_VRING_ADDR:
case VHOST_USER_SET_VRING_BASE:
case VHOST_USER_SET_VRING_KICK:
case VHOST_USER_SET_VRING_CALL:
case VHOST_USER_SET_VRING_ERR:
case VHOST_USER_SET_VRING_ENABLE:
case VHOST_USER_SEND_RARP:
case VHOST_USER_NET_SET_MTU:
case VHOST_USER_SET_SLAVE_REQ_FD:
vhost_user_lock_all_queue_pairs(dev);
unlock_required = 1;
break;
default:
break;
}
if (dev->extern_ops.pre_msg_handle) {
uint32_t need_reply;
ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
(void *)&msg, &need_reply, &skip_master);
if (ret < 0)
goto skip_to_reply;
if (need_reply)
send_vhost_reply(fd, &msg);
if (skip_master)
goto skip_to_post_handle;
}
switch (msg.request.master) {
case VHOST_USER_GET_FEATURES:
msg.payload.u64 = vhost_user_get_features(dev);
msg.size = sizeof(msg.payload.u64);
send_vhost_reply(fd, &msg);
break;
case VHOST_USER_SET_FEATURES:
ret = vhost_user_set_features(dev, msg.payload.u64);
if (ret)
return -1;
break;
case VHOST_USER_GET_PROTOCOL_FEATURES:
vhost_user_get_protocol_features(dev, &msg);
send_vhost_reply(fd, &msg);
break;
case VHOST_USER_SET_PROTOCOL_FEATURES:
vhost_user_set_protocol_features(dev, msg.payload.u64);
break;
case VHOST_USER_SET_OWNER:
vhost_user_set_owner();
break;
case VHOST_USER_RESET_OWNER:
vhost_user_reset_owner(dev);
break;
case VHOST_USER_SET_MEM_TABLE:
ret = vhost_user_set_mem_table(dev, &msg);
break;
case VHOST_USER_SET_LOG_BASE:
vhost_user_set_log_base(dev, &msg);
/* it needs a reply */
msg.size = sizeof(msg.payload.u64);
send_vhost_reply(fd, &msg);
break;
case VHOST_USER_SET_LOG_FD:
close(msg.fds[0]);
RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
break;
case VHOST_USER_SET_VRING_NUM:
vhost_user_set_vring_num(dev, &msg);
break;
case VHOST_USER_SET_VRING_ADDR:
vhost_user_set_vring_addr(&dev, &msg);
break;
case VHOST_USER_SET_VRING_BASE:
vhost_user_set_vring_base(dev, &msg);
break;
case VHOST_USER_GET_VRING_BASE:
vhost_user_get_vring_base(dev, &msg);
msg.size = sizeof(msg.payload.state);
send_vhost_reply(fd, &msg);
break;
case VHOST_USER_SET_VRING_KICK:
vhost_user_set_vring_kick(&dev, &msg);
break;
case VHOST_USER_SET_VRING_CALL:
vhost_user_set_vring_call(dev, &msg);
break;
case VHOST_USER_SET_VRING_ERR:
if (!(msg.payload.u64 & VHOST_USER_VRING_NOFD_MASK))
close(msg.fds[0]);
RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
break;
case VHOST_USER_GET_QUEUE_NUM:
msg.payload.u64 = (uint64_t)vhost_user_get_queue_num(dev);
msg.size = sizeof(msg.payload.u64);
send_vhost_reply(fd, &msg);
break;
case VHOST_USER_SET_VRING_ENABLE:
vhost_user_set_vring_enable(dev, &msg);
break;
case VHOST_USER_SEND_RARP:
vhost_user_send_rarp(dev, &msg);
break;
case VHOST_USER_NET_SET_MTU:
ret = vhost_user_net_set_mtu(dev, &msg);
break;
case VHOST_USER_SET_SLAVE_REQ_FD:
ret = vhost_user_set_req_fd(dev, &msg);
break;
case VHOST_USER_IOTLB_MSG:
ret = vhost_user_iotlb_msg(&dev, &msg);
break;
default:
ret = -1;
break;
}
skip_to_post_handle:
if (dev->extern_ops.post_msg_handle) {
uint32_t need_reply;
ret = (*dev->extern_ops.post_msg_handle)(
dev->vid, (void *)&msg, &need_reply);
if (ret < 0)
goto skip_to_reply;
if (need_reply)
send_vhost_reply(fd, &msg);
}
skip_to_reply:
if (unlock_required)
vhost_user_unlock_all_queue_pairs(dev);
if (msg.flags & VHOST_USER_NEED_REPLY) {
msg.payload.u64 = !!ret;
msg.size = sizeof(msg.payload.u64);
send_vhost_reply(fd, &msg);
}
if (!(dev->flags & VIRTIO_DEV_RUNNING) && virtio_is_ready(dev)) {
dev->flags |= VIRTIO_DEV_READY;
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
if (dev->dequeue_zero_copy) {
RTE_LOG(INFO, VHOST_CONFIG,
"dequeue zero copy is enabled\n");
}
if (dev->notify_ops->new_device(dev->vid) == 0)
dev->flags |= VIRTIO_DEV_RUNNING;
}
}
did = dev->vdpa_dev_id;
vdpa_dev = rte_vdpa_get_device(did);
if (vdpa_dev && virtio_is_ready(dev) &&
!(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) &&
msg.request.master == VHOST_USER_SET_VRING_ENABLE) {
if (vdpa_dev->ops->dev_conf)
vdpa_dev->ops->dev_conf(dev->vid);
dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
}
return 0;
}
int
vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
{
int ret;
struct VhostUserMsg msg = {
.request.slave = VHOST_USER_SLAVE_IOTLB_MSG,
.flags = VHOST_USER_VERSION,
.size = sizeof(msg.payload.iotlb),
.payload.iotlb = {
.iova = iova,
.perm = perm,
.type = VHOST_IOTLB_MISS,
},
};
ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
if (ret < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"Failed to send IOTLB miss message (%d)\n",
ret);
return ret;
}
return 0;
}