fc2225dbc5
This patch moves the registration of memory regions to userfaultfd to a dedicated function, with the goal of simplifying VHOST_USER_SET_MEM_TABLE request handling function. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
3147 lines
78 KiB
C
3147 lines
78 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2018 Intel Corporation
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*/
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/* Security model
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* --------------
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* The vhost-user protocol connection is an external interface, so it must be
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* robust against invalid inputs.
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*
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* This is important because the vhost-user master is only one step removed
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* from the guest. Malicious guests that have escaped will then launch further
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* attacks from the vhost-user master.
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*
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* Even in deployments where guests are trusted, a bug in the vhost-user master
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* can still cause invalid messages to be sent. Such messages must not
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* compromise the stability of the DPDK application by causing crashes, memory
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* corruption, or other problematic behavior.
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*
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* Do not assume received VhostUserMsg fields contain sensible values!
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/syscall.h>
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#include <assert.h>
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#ifdef RTE_LIBRTE_VHOST_NUMA
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#include <numaif.h>
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#endif
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#ifdef RTE_LIBRTE_VHOST_POSTCOPY
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#include <linux/userfaultfd.h>
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#endif
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#ifdef F_ADD_SEALS /* if file sealing is supported, so is memfd */
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#include <linux/memfd.h>
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#define MEMFD_SUPPORTED
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#endif
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#include <rte_common.h>
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#include <rte_malloc.h>
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#include <rte_log.h>
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#include "iotlb.h"
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#include "vhost.h"
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#include "vhost_user.h"
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#define VIRTIO_MIN_MTU 68
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#define VIRTIO_MAX_MTU 65535
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#define INFLIGHT_ALIGNMENT 64
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#define INFLIGHT_VERSION 0x1
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static const char *vhost_message_str[VHOST_USER_MAX] = {
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[VHOST_USER_NONE] = "VHOST_USER_NONE",
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[VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
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[VHOST_USER_SET_FEATURES] = "VHOST_USER_SET_FEATURES",
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[VHOST_USER_SET_OWNER] = "VHOST_USER_SET_OWNER",
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[VHOST_USER_RESET_OWNER] = "VHOST_USER_RESET_OWNER",
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[VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
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[VHOST_USER_SET_LOG_BASE] = "VHOST_USER_SET_LOG_BASE",
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[VHOST_USER_SET_LOG_FD] = "VHOST_USER_SET_LOG_FD",
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[VHOST_USER_SET_VRING_NUM] = "VHOST_USER_SET_VRING_NUM",
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[VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
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[VHOST_USER_SET_VRING_BASE] = "VHOST_USER_SET_VRING_BASE",
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[VHOST_USER_GET_VRING_BASE] = "VHOST_USER_GET_VRING_BASE",
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[VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
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[VHOST_USER_SET_VRING_CALL] = "VHOST_USER_SET_VRING_CALL",
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[VHOST_USER_SET_VRING_ERR] = "VHOST_USER_SET_VRING_ERR",
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[VHOST_USER_GET_PROTOCOL_FEATURES] = "VHOST_USER_GET_PROTOCOL_FEATURES",
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[VHOST_USER_SET_PROTOCOL_FEATURES] = "VHOST_USER_SET_PROTOCOL_FEATURES",
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[VHOST_USER_GET_QUEUE_NUM] = "VHOST_USER_GET_QUEUE_NUM",
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[VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
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[VHOST_USER_SEND_RARP] = "VHOST_USER_SEND_RARP",
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[VHOST_USER_NET_SET_MTU] = "VHOST_USER_NET_SET_MTU",
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[VHOST_USER_SET_SLAVE_REQ_FD] = "VHOST_USER_SET_SLAVE_REQ_FD",
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[VHOST_USER_IOTLB_MSG] = "VHOST_USER_IOTLB_MSG",
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[VHOST_USER_CRYPTO_CREATE_SESS] = "VHOST_USER_CRYPTO_CREATE_SESS",
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[VHOST_USER_CRYPTO_CLOSE_SESS] = "VHOST_USER_CRYPTO_CLOSE_SESS",
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[VHOST_USER_POSTCOPY_ADVISE] = "VHOST_USER_POSTCOPY_ADVISE",
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[VHOST_USER_POSTCOPY_LISTEN] = "VHOST_USER_POSTCOPY_LISTEN",
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[VHOST_USER_POSTCOPY_END] = "VHOST_USER_POSTCOPY_END",
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[VHOST_USER_GET_INFLIGHT_FD] = "VHOST_USER_GET_INFLIGHT_FD",
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[VHOST_USER_SET_INFLIGHT_FD] = "VHOST_USER_SET_INFLIGHT_FD",
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[VHOST_USER_SET_STATUS] = "VHOST_USER_SET_STATUS",
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[VHOST_USER_GET_STATUS] = "VHOST_USER_GET_STATUS",
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};
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static int send_vhost_reply(int sockfd, struct VhostUserMsg *msg);
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static int read_vhost_message(int sockfd, struct VhostUserMsg *msg);
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static void
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close_msg_fds(struct VhostUserMsg *msg)
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{
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int i;
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for (i = 0; i < msg->fd_num; i++) {
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int fd = msg->fds[i];
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if (fd == -1)
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continue;
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msg->fds[i] = -1;
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close(fd);
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}
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}
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/*
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* Ensure the expected number of FDs is received,
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* close all FDs and return an error if this is not the case.
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*/
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static int
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validate_msg_fds(struct VhostUserMsg *msg, int expected_fds)
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{
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if (msg->fd_num == expected_fds)
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return 0;
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VHOST_LOG_CONFIG(ERR,
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" Expect %d FDs for request %s, received %d\n",
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expected_fds,
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vhost_message_str[msg->request.master],
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msg->fd_num);
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close_msg_fds(msg);
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return -1;
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}
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static uint64_t
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get_blk_size(int fd)
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{
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struct stat stat;
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int ret;
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ret = fstat(fd, &stat);
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return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
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}
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static void
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free_mem_region(struct virtio_net *dev)
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{
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uint32_t i;
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struct rte_vhost_mem_region *reg;
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if (!dev || !dev->mem)
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return;
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for (i = 0; i < dev->mem->nregions; i++) {
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reg = &dev->mem->regions[i];
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if (reg->host_user_addr) {
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munmap(reg->mmap_addr, reg->mmap_size);
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close(reg->fd);
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}
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}
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}
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void
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vhost_backend_cleanup(struct virtio_net *dev)
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{
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if (dev->mem) {
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free_mem_region(dev);
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rte_free(dev->mem);
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dev->mem = NULL;
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}
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rte_free(dev->guest_pages);
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dev->guest_pages = NULL;
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if (dev->log_addr) {
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munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
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dev->log_addr = 0;
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}
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if (dev->inflight_info) {
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if (dev->inflight_info->addr) {
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munmap(dev->inflight_info->addr,
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dev->inflight_info->size);
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dev->inflight_info->addr = NULL;
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}
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if (dev->inflight_info->fd >= 0) {
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close(dev->inflight_info->fd);
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dev->inflight_info->fd = -1;
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}
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free(dev->inflight_info);
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dev->inflight_info = NULL;
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}
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if (dev->slave_req_fd >= 0) {
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close(dev->slave_req_fd);
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dev->slave_req_fd = -1;
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}
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if (dev->postcopy_ufd >= 0) {
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close(dev->postcopy_ufd);
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dev->postcopy_ufd = -1;
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}
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dev->postcopy_listening = 0;
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}
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static void
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vhost_user_notify_queue_state(struct virtio_net *dev, uint16_t index,
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int enable)
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{
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struct rte_vdpa_device *vdpa_dev = dev->vdpa_dev;
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struct vhost_virtqueue *vq = dev->virtqueue[index];
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/* Configure guest notifications on enable */
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if (enable && vq->notif_enable != VIRTIO_UNINITIALIZED_NOTIF)
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vhost_enable_guest_notification(dev, vq, vq->notif_enable);
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if (vdpa_dev && vdpa_dev->ops->set_vring_state)
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vdpa_dev->ops->set_vring_state(dev->vid, index, enable);
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if (dev->notify_ops->vring_state_changed)
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dev->notify_ops->vring_state_changed(dev->vid,
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index, enable);
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}
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/*
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* This function just returns success at the moment unless
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* the device hasn't been initialised.
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*/
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static int
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vhost_user_set_owner(struct virtio_net **pdev __rte_unused,
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struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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return RTE_VHOST_MSG_RESULT_OK;
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}
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static int
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vhost_user_reset_owner(struct virtio_net **pdev,
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struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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struct virtio_net *dev = *pdev;
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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vhost_destroy_device_notify(dev);
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cleanup_device(dev, 0);
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reset_device(dev);
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return RTE_VHOST_MSG_RESULT_OK;
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}
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/*
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* The features that we support are requested.
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*/
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static int
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vhost_user_get_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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struct virtio_net *dev = *pdev;
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uint64_t features = 0;
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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rte_vhost_driver_get_features(dev->ifname, &features);
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msg->payload.u64 = features;
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msg->size = sizeof(msg->payload.u64);
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msg->fd_num = 0;
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return RTE_VHOST_MSG_RESULT_REPLY;
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}
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/*
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* The queue number that we support are requested.
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*/
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static int
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vhost_user_get_queue_num(struct virtio_net **pdev, struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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struct virtio_net *dev = *pdev;
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uint32_t queue_num = 0;
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
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msg->payload.u64 = (uint64_t)queue_num;
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msg->size = sizeof(msg->payload.u64);
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msg->fd_num = 0;
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return RTE_VHOST_MSG_RESULT_REPLY;
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}
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/*
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* We receive the negotiated features supported by us and the virtio device.
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*/
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static int
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vhost_user_set_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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struct virtio_net *dev = *pdev;
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uint64_t features = msg->payload.u64;
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uint64_t vhost_features = 0;
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struct rte_vdpa_device *vdpa_dev;
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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rte_vhost_driver_get_features(dev->ifname, &vhost_features);
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if (features & ~vhost_features) {
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VHOST_LOG_CONFIG(ERR,
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"(%d) received invalid negotiated features.\n",
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dev->vid);
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dev->flags |= VIRTIO_DEV_FEATURES_FAILED;
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dev->status &= ~VIRTIO_DEVICE_STATUS_FEATURES_OK;
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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if (dev->flags & VIRTIO_DEV_RUNNING) {
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if (dev->features == features)
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return RTE_VHOST_MSG_RESULT_OK;
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/*
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* Error out if master tries to change features while device is
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* in running state. The exception being VHOST_F_LOG_ALL, which
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* is enabled when the live-migration starts.
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*/
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if ((dev->features ^ features) & ~(1ULL << VHOST_F_LOG_ALL)) {
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VHOST_LOG_CONFIG(ERR,
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"(%d) features changed while device is running.\n",
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dev->vid);
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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if (dev->notify_ops->features_changed)
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dev->notify_ops->features_changed(dev->vid, features);
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}
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dev->features = features;
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if (dev->features &
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((1ULL << VIRTIO_NET_F_MRG_RXBUF) |
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(1ULL << VIRTIO_F_VERSION_1) |
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(1ULL << VIRTIO_F_RING_PACKED))) {
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dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
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} else {
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dev->vhost_hlen = sizeof(struct virtio_net_hdr);
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}
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VHOST_LOG_CONFIG(INFO,
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"negotiated Virtio features: 0x%" PRIx64 "\n", dev->features);
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VHOST_LOG_CONFIG(DEBUG,
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"(%d) mergeable RX buffers %s, virtio 1 %s\n",
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dev->vid,
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(dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
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(dev->features & (1ULL << VIRTIO_F_VERSION_1)) ? "on" : "off");
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if ((dev->flags & VIRTIO_DEV_BUILTIN_VIRTIO_NET) &&
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!(dev->features & (1ULL << VIRTIO_NET_F_MQ))) {
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/*
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* Remove all but first queue pair if MQ hasn't been
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* negotiated. This is safe because the device is not
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* running at this stage.
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*/
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while (dev->nr_vring > 2) {
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struct vhost_virtqueue *vq;
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vq = dev->virtqueue[--dev->nr_vring];
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if (!vq)
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continue;
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dev->virtqueue[dev->nr_vring] = NULL;
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cleanup_vq(vq, 1);
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cleanup_vq_inflight(dev, vq);
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free_vq(dev, vq);
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}
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}
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vdpa_dev = dev->vdpa_dev;
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if (vdpa_dev)
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vdpa_dev->ops->set_features(dev->vid);
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dev->flags &= ~VIRTIO_DEV_FEATURES_FAILED;
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return RTE_VHOST_MSG_RESULT_OK;
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}
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/*
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* The virtio device sends us the size of the descriptor ring.
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*/
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static int
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vhost_user_set_vring_num(struct virtio_net **pdev,
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struct VhostUserMsg *msg,
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int main_fd __rte_unused)
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{
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struct virtio_net *dev = *pdev;
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struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
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if (validate_msg_fds(msg, 0) != 0)
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return RTE_VHOST_MSG_RESULT_ERR;
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vq->size = msg->payload.state.num;
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/* VIRTIO 1.0, 2.4 Virtqueues says:
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*
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* Queue Size value is always a power of 2. The maximum Queue Size
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* value is 32768.
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*
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* VIRTIO 1.1 2.7 Virtqueues says:
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*
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* Packed virtqueues support up to 2^15 entries each.
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*/
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if (!vq_is_packed(dev)) {
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if (vq->size & (vq->size - 1)) {
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VHOST_LOG_CONFIG(ERR,
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"invalid virtqueue size %u\n", vq->size);
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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}
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if (vq->size > 32768) {
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VHOST_LOG_CONFIG(ERR,
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"invalid virtqueue size %u\n", vq->size);
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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if (vq_is_packed(dev)) {
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if (vq->shadow_used_packed)
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rte_free(vq->shadow_used_packed);
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vq->shadow_used_packed = rte_malloc(NULL,
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vq->size *
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sizeof(struct vring_used_elem_packed),
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RTE_CACHE_LINE_SIZE);
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if (!vq->shadow_used_packed) {
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VHOST_LOG_CONFIG(ERR,
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"failed to allocate memory for shadow used ring.\n");
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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} else {
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if (vq->shadow_used_split)
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rte_free(vq->shadow_used_split);
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vq->shadow_used_split = rte_malloc(NULL,
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vq->size * sizeof(struct vring_used_elem),
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RTE_CACHE_LINE_SIZE);
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if (!vq->shadow_used_split) {
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VHOST_LOG_CONFIG(ERR,
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"failed to allocate memory for vq internal data.\n");
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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}
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if (vq->batch_copy_elems)
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rte_free(vq->batch_copy_elems);
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vq->batch_copy_elems = rte_malloc(NULL,
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vq->size * sizeof(struct batch_copy_elem),
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RTE_CACHE_LINE_SIZE);
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if (!vq->batch_copy_elems) {
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VHOST_LOG_CONFIG(ERR,
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"failed to allocate memory for batching copy.\n");
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return RTE_VHOST_MSG_RESULT_ERR;
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}
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return RTE_VHOST_MSG_RESULT_OK;
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}
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/*
|
|
* 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 vring_used_elem *new_shadow_used_split;
|
|
struct vring_used_elem_packed *new_shadow_used_packed;
|
|
struct batch_copy_elem *new_batch_copy_elems;
|
|
int ret;
|
|
|
|
if (dev->flags & VIRTIO_DEV_RUNNING)
|
|
return dev;
|
|
|
|
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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Unable to get vq numa information.\n");
|
|
return dev;
|
|
}
|
|
if (oldnode != newnode) {
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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));
|
|
|
|
if (vq_is_packed(dev)) {
|
|
new_shadow_used_packed = rte_malloc_socket(NULL,
|
|
vq->size *
|
|
sizeof(struct vring_used_elem_packed),
|
|
RTE_CACHE_LINE_SIZE,
|
|
newnode);
|
|
if (new_shadow_used_packed) {
|
|
rte_free(vq->shadow_used_packed);
|
|
vq->shadow_used_packed = new_shadow_used_packed;
|
|
}
|
|
} else {
|
|
new_shadow_used_split = rte_malloc_socket(NULL,
|
|
vq->size *
|
|
sizeof(struct vring_used_elem),
|
|
RTE_CACHE_LINE_SIZE,
|
|
newnode);
|
|
if (new_shadow_used_split) {
|
|
rte_free(vq->shadow_used_split);
|
|
vq->shadow_used_split = new_shadow_used_split;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Unable to get dev numa information.\n");
|
|
goto out;
|
|
}
|
|
if (oldnode != newnode) {
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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, uint64_t *len)
|
|
{
|
|
struct rte_vhost_mem_region *r;
|
|
uint32_t i;
|
|
|
|
if (unlikely(!dev || !dev->mem))
|
|
goto out_error;
|
|
|
|
/* Find the region where the address lives. */
|
|
for (i = 0; i < dev->mem->nregions; i++) {
|
|
r = &dev->mem->regions[i];
|
|
|
|
if (qva >= r->guest_user_addr &&
|
|
qva < r->guest_user_addr + r->size) {
|
|
|
|
if (unlikely(*len > r->guest_user_addr + r->size - qva))
|
|
*len = r->guest_user_addr + r->size - qva;
|
|
|
|
return qva - r->guest_user_addr +
|
|
r->host_user_addr;
|
|
}
|
|
}
|
|
out_error:
|
|
*len = 0;
|
|
|
|
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;
|
|
|
|
vhost_user_iotlb_rd_lock(vq);
|
|
vva = vhost_iova_to_vva(dev, vq, ra,
|
|
size, VHOST_ACCESS_RW);
|
|
vhost_user_iotlb_rd_unlock(vq);
|
|
|
|
return vva;
|
|
}
|
|
|
|
return qva_to_vva(dev, ra, size);
|
|
}
|
|
|
|
static uint64_t
|
|
log_addr_to_gpa(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
uint64_t log_gpa;
|
|
|
|
vhost_user_iotlb_rd_lock(vq);
|
|
log_gpa = translate_log_addr(dev, vq, vq->ring_addrs.log_guest_addr);
|
|
vhost_user_iotlb_rd_unlock(vq);
|
|
|
|
return log_gpa;
|
|
}
|
|
|
|
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;
|
|
uint64_t len, expected_len;
|
|
|
|
if (addr->flags & (1 << VHOST_VRING_F_LOG)) {
|
|
vq->log_guest_addr =
|
|
log_addr_to_gpa(dev, vq);
|
|
if (vq->log_guest_addr == 0) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to map log_guest_addr.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
}
|
|
|
|
if (vq_is_packed(dev)) {
|
|
len = sizeof(struct vring_packed_desc) * vq->size;
|
|
vq->desc_packed = (struct vring_packed_desc *)(uintptr_t)
|
|
ring_addr_to_vva(dev, vq, addr->desc_user_addr, &len);
|
|
if (vq->desc_packed == NULL ||
|
|
len != sizeof(struct vring_packed_desc) *
|
|
vq->size) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to map desc_packed ring.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
dev = numa_realloc(dev, vq_index);
|
|
vq = dev->virtqueue[vq_index];
|
|
addr = &vq->ring_addrs;
|
|
|
|
len = sizeof(struct vring_packed_desc_event);
|
|
vq->driver_event = (struct vring_packed_desc_event *)
|
|
(uintptr_t)ring_addr_to_vva(dev,
|
|
vq, addr->avail_user_addr, &len);
|
|
if (vq->driver_event == NULL ||
|
|
len != sizeof(struct vring_packed_desc_event)) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to find driver area address.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
len = sizeof(struct vring_packed_desc_event);
|
|
vq->device_event = (struct vring_packed_desc_event *)
|
|
(uintptr_t)ring_addr_to_vva(dev,
|
|
vq, addr->used_user_addr, &len);
|
|
if (vq->device_event == NULL ||
|
|
len != sizeof(struct vring_packed_desc_event)) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to find device area address.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
vq->access_ok = 1;
|
|
return dev;
|
|
}
|
|
|
|
/* The addresses are converted from QEMU virtual to Vhost virtual. */
|
|
if (vq->desc && vq->avail && vq->used)
|
|
return dev;
|
|
|
|
len = sizeof(struct vring_desc) * vq->size;
|
|
vq->desc = (struct vring_desc *)(uintptr_t)ring_addr_to_vva(dev,
|
|
vq, addr->desc_user_addr, &len);
|
|
if (vq->desc == 0 || len != sizeof(struct vring_desc) * vq->size) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to map desc ring.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
dev = numa_realloc(dev, vq_index);
|
|
vq = dev->virtqueue[vq_index];
|
|
addr = &vq->ring_addrs;
|
|
|
|
len = sizeof(struct vring_avail) + sizeof(uint16_t) * vq->size;
|
|
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
|
|
len += sizeof(uint16_t);
|
|
expected_len = len;
|
|
vq->avail = (struct vring_avail *)(uintptr_t)ring_addr_to_vva(dev,
|
|
vq, addr->avail_user_addr, &len);
|
|
if (vq->avail == 0 || len != expected_len) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to map avail ring.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
len = sizeof(struct vring_used) +
|
|
sizeof(struct vring_used_elem) * vq->size;
|
|
if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
|
|
len += sizeof(uint16_t);
|
|
expected_len = len;
|
|
vq->used = (struct vring_used *)(uintptr_t)ring_addr_to_vva(dev,
|
|
vq, addr->used_user_addr, &len);
|
|
if (vq->used == 0 || len != expected_len) {
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"(%d) failed to map used ring.\n",
|
|
dev->vid);
|
|
return dev;
|
|
}
|
|
|
|
if (vq->last_used_idx != vq->used->idx) {
|
|
VHOST_LOG_CONFIG(WARNING,
|
|
"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->access_ok = 1;
|
|
|
|
VHOST_LOG_CONFIG(DEBUG, "(%d) mapped address desc: %p\n",
|
|
dev->vid, vq->desc);
|
|
VHOST_LOG_CONFIG(DEBUG, "(%d) mapped address avail: %p\n",
|
|
dev->vid, vq->avail);
|
|
VHOST_LOG_CONFIG(DEBUG, "(%d) mapped address used: %p\n",
|
|
dev->vid, vq->used);
|
|
VHOST_LOG_CONFIG(DEBUG, "(%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, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_virtqueue *vq;
|
|
struct vhost_vring_addr *addr = &msg->payload.addr;
|
|
bool access_ok;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (dev->mem == NULL)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
/* addr->index refers to the queue index. The txq 1, rxq is 0. */
|
|
vq = dev->virtqueue[msg->payload.addr.index];
|
|
|
|
access_ok = vq->access_ok;
|
|
|
|
/*
|
|
* 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))) ||
|
|
access_ok) {
|
|
dev = translate_ring_addresses(dev, msg->payload.addr.index);
|
|
if (!dev)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
*pdev = dev;
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
/*
|
|
* The virtio device sends us the available ring last used index.
|
|
*/
|
|
static int
|
|
vhost_user_set_vring_base(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
|
|
uint64_t val = msg->payload.state.num;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
/*
|
|
* Bit[0:14]: avail index
|
|
* Bit[15]: avail wrap counter
|
|
*/
|
|
vq->last_avail_idx = val & 0x7fff;
|
|
vq->avail_wrap_counter = !!(val & (0x1 << 15));
|
|
/*
|
|
* Set used index to same value as available one, as
|
|
* their values should be the same since ring processing
|
|
* was stopped at get time.
|
|
*/
|
|
vq->last_used_idx = vq->last_avail_idx;
|
|
vq->used_wrap_counter = vq->avail_wrap_counter;
|
|
} else {
|
|
vq->last_used_idx = msg->payload.state.num;
|
|
vq->last_avail_idx = msg->payload.state.num;
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
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;
|
|
struct guest_page *old_pages;
|
|
|
|
if (dev->nr_guest_pages == dev->max_guest_pages) {
|
|
dev->max_guest_pages *= 2;
|
|
old_pages = dev->guest_pages;
|
|
dev->guest_pages = rte_realloc(dev->guest_pages,
|
|
dev->max_guest_pages * sizeof(*page),
|
|
RTE_CACHE_LINE_SIZE);
|
|
if (dev->guest_pages == NULL) {
|
|
VHOST_LOG_CONFIG(ERR, "cannot realloc guest_pages\n");
|
|
rte_free(old_pages);
|
|
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;
|
|
}
|
|
|
|
/* sort guest page array if over binary search threshold */
|
|
if (dev->nr_guest_pages >= VHOST_BINARY_SEARCH_THRESH) {
|
|
qsort((void *)dev->guest_pages, dev->nr_guest_pages,
|
|
sizeof(struct guest_page), guest_page_addrcmp);
|
|
}
|
|
|
|
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];
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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;
|
|
}
|
|
|
|
#ifdef RTE_LIBRTE_VHOST_POSTCOPY
|
|
static int
|
|
vhost_user_postcopy_region_register(struct virtio_net *dev,
|
|
struct rte_vhost_mem_region *reg)
|
|
{
|
|
struct uffdio_register reg_struct;
|
|
|
|
/*
|
|
* Let's register all the mmap'ed area to ensure
|
|
* alignment on page boundary.
|
|
*/
|
|
reg_struct.range.start = (uint64_t)(uintptr_t)reg->mmap_addr;
|
|
reg_struct.range.len = reg->mmap_size;
|
|
reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
|
|
|
|
if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
|
|
®_struct)) {
|
|
VHOST_LOG_CONFIG(ERR, "Failed to register ufd for region "
|
|
"%" PRIx64 " - %" PRIx64 " (ufd = %d) %s\n",
|
|
(uint64_t)reg_struct.range.start,
|
|
(uint64_t)reg_struct.range.start +
|
|
(uint64_t)reg_struct.range.len - 1,
|
|
dev->postcopy_ufd,
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO, "\t userfaultfd registered for range : %" PRIx64 " - %" PRIx64 "\n",
|
|
(uint64_t)reg_struct.range.start,
|
|
(uint64_t)reg_struct.range.start +
|
|
(uint64_t)reg_struct.range.len - 1);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static int
|
|
vhost_user_postcopy_region_register(struct virtio_net *dev __rte_unused,
|
|
struct rte_vhost_mem_region *reg __rte_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct VhostUserMemory *memory = &msg->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;
|
|
|
|
if (validate_msg_fds(msg, memory->nregions) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (memory->nregions > VHOST_MEMORY_MAX_NREGIONS) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"too many memory regions (%u)\n", memory->nregions);
|
|
goto close_msg_fds;
|
|
}
|
|
|
|
if (dev->mem && !vhost_memory_changed(memory, dev->mem)) {
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"(%d) memory regions not changed\n", dev->vid);
|
|
|
|
close_msg_fds(msg);
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
if (dev->mem) {
|
|
if (dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) {
|
|
struct rte_vdpa_device *vdpa_dev = dev->vdpa_dev;
|
|
|
|
if (vdpa_dev && vdpa_dev->ops->dev_close)
|
|
vdpa_dev->ops->dev_close(dev->vid);
|
|
dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
|
|
}
|
|
free_mem_region(dev);
|
|
rte_free(dev->mem);
|
|
dev->mem = NULL;
|
|
}
|
|
|
|
/* Flush IOTLB cache as previous HVAs are now invalid */
|
|
if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
|
|
for (i = 0; i < dev->nr_vring; i++)
|
|
vhost_user_iotlb_flush_all(dev->virtqueue[i]);
|
|
|
|
dev->nr_guest_pages = 0;
|
|
if (dev->guest_pages == NULL) {
|
|
dev->max_guest_pages = 8;
|
|
dev->guest_pages = rte_zmalloc(NULL,
|
|
dev->max_guest_pages *
|
|
sizeof(struct guest_page),
|
|
RTE_CACHE_LINE_SIZE);
|
|
if (dev->guest_pages == NULL) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"(%d) failed to allocate memory "
|
|
"for dev->guest_pages\n",
|
|
dev->vid);
|
|
goto close_msg_fds;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"(%d) failed to allocate memory for dev->mem\n",
|
|
dev->vid);
|
|
goto free_guest_pages;
|
|
}
|
|
dev->mem->nregions = memory->nregions;
|
|
|
|
for (i = 0; i < memory->nregions; 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 = msg->fds[i];
|
|
|
|
/*
|
|
* Assign invalid file descriptor value to avoid double
|
|
* closing on error path.
|
|
*/
|
|
msg->fds[i] = -1;
|
|
|
|
mmap_offset = memory->regions[i].mmap_offset;
|
|
|
|
/* Check for memory_size + mmap_offset overflow */
|
|
if (mmap_offset >= -reg->size) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"mmap_offset (%#"PRIx64") and memory_size "
|
|
"(%#"PRIx64") overflow\n",
|
|
mmap_offset, reg->size);
|
|
goto free_mem_table;
|
|
}
|
|
|
|
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(reg->fd);
|
|
if (alignment == (uint64_t)-1) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"couldn't get hugepage size through fstat\n");
|
|
goto free_mem_table;
|
|
}
|
|
mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
|
|
if (mmap_size == 0) {
|
|
/*
|
|
* It could happen if initial mmap_size + alignment
|
|
* overflows the sizeof uint64, which could happen if
|
|
* either mmap_size or alignment value is wrong.
|
|
*
|
|
* mmap() kernel implementation would return an error,
|
|
* but better catch it before and provide useful info
|
|
* in the logs.
|
|
*/
|
|
VHOST_LOG_CONFIG(ERR, "mmap size (0x%" PRIx64 ") "
|
|
"or alignment (0x%" PRIx64 ") is invalid\n",
|
|
reg->size + mmap_offset, alignment);
|
|
goto free_mem_table;
|
|
}
|
|
|
|
populate = dev->async_copy ? MAP_POPULATE : 0;
|
|
mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
|
|
MAP_SHARED | populate, reg->fd, 0);
|
|
|
|
if (mmap_addr == MAP_FAILED) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"mmap region %u failed.\n", i);
|
|
goto free_mem_table;
|
|
}
|
|
|
|
reg->mmap_addr = mmap_addr;
|
|
reg->mmap_size = mmap_size;
|
|
reg->host_user_addr = (uint64_t)(uintptr_t)mmap_addr +
|
|
mmap_offset;
|
|
|
|
if (dev->async_copy)
|
|
if (add_guest_pages(dev, reg, alignment) < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"adding guest pages to region %u failed.\n",
|
|
i);
|
|
goto free_mem_table;
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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);
|
|
|
|
if (dev->postcopy_listening) {
|
|
/*
|
|
* We haven't a better way right now than sharing
|
|
* DPDK's virtual address with Qemu, so that Qemu can
|
|
* retrieve the region offset when handling userfaults.
|
|
*/
|
|
memory->regions[i].userspace_addr =
|
|
reg->host_user_addr;
|
|
}
|
|
}
|
|
if (dev->postcopy_listening) {
|
|
/* Send the addresses back to qemu */
|
|
msg->fd_num = 0;
|
|
send_vhost_reply(main_fd, msg);
|
|
|
|
/* Wait for qemu to acknolwedge it's got the addresses
|
|
* we've got to wait before we're allowed to generate faults.
|
|
*/
|
|
VhostUserMsg ack_msg;
|
|
if (read_vhost_message(main_fd, &ack_msg) <= 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Failed to read qemu ack on postcopy set-mem-table\n");
|
|
goto free_mem_table;
|
|
}
|
|
|
|
if (validate_msg_fds(&ack_msg, 0) != 0)
|
|
goto free_mem_table;
|
|
|
|
if (ack_msg.request.master != VHOST_USER_SET_MEM_TABLE) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Bad qemu ack on postcopy set-mem-table (%d)\n",
|
|
ack_msg.request.master);
|
|
goto free_mem_table;
|
|
}
|
|
|
|
/* Now userfault register and we can use the memory */
|
|
for (i = 0; i < memory->nregions; i++)
|
|
if (vhost_user_postcopy_region_register(dev,
|
|
&dev->mem->regions[i]) < 0)
|
|
goto free_mem_table;
|
|
}
|
|
|
|
for (i = 0; i < dev->nr_vring; i++) {
|
|
struct vhost_virtqueue *vq = dev->virtqueue[i];
|
|
|
|
if (!vq)
|
|
continue;
|
|
|
|
if (vq->desc || vq->avail || vq->used) {
|
|
/*
|
|
* If the memory table got updated, the ring addresses
|
|
* need to be translated again as virtual addresses have
|
|
* changed.
|
|
*/
|
|
vring_invalidate(dev, vq);
|
|
|
|
dev = translate_ring_addresses(dev, i);
|
|
if (!dev) {
|
|
dev = *pdev;
|
|
goto free_mem_table;
|
|
}
|
|
|
|
*pdev = dev;
|
|
}
|
|
}
|
|
|
|
dump_guest_pages(dev);
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
free_mem_table:
|
|
free_mem_region(dev);
|
|
rte_free(dev->mem);
|
|
dev->mem = NULL;
|
|
free_guest_pages:
|
|
rte_free(dev->guest_pages);
|
|
dev->guest_pages = NULL;
|
|
close_msg_fds:
|
|
close_msg_fds(msg);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
static bool
|
|
vq_is_ready(struct virtio_net *dev, struct vhost_virtqueue *vq)
|
|
{
|
|
bool rings_ok;
|
|
|
|
if (!vq)
|
|
return false;
|
|
|
|
if (vq_is_packed(dev))
|
|
rings_ok = vq->desc_packed && vq->driver_event &&
|
|
vq->device_event;
|
|
else
|
|
rings_ok = vq->desc && vq->avail && vq->used;
|
|
|
|
return rings_ok &&
|
|
vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
|
|
vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD &&
|
|
vq->enabled;
|
|
}
|
|
|
|
#define VIRTIO_BUILTIN_NUM_VQS_TO_BE_READY 2u
|
|
|
|
static int
|
|
virtio_is_ready(struct virtio_net *dev)
|
|
{
|
|
struct vhost_virtqueue *vq;
|
|
uint32_t i, nr_vring = dev->nr_vring;
|
|
|
|
if (dev->flags & VIRTIO_DEV_READY)
|
|
return 1;
|
|
|
|
if (!dev->nr_vring)
|
|
return 0;
|
|
|
|
if (dev->flags & VIRTIO_DEV_BUILTIN_VIRTIO_NET) {
|
|
nr_vring = VIRTIO_BUILTIN_NUM_VQS_TO_BE_READY;
|
|
|
|
if (dev->nr_vring < nr_vring)
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < nr_vring; i++) {
|
|
vq = dev->virtqueue[i];
|
|
|
|
if (!vq_is_ready(dev, vq))
|
|
return 0;
|
|
}
|
|
|
|
/* If supported, ensure the frontend is really done with config */
|
|
if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS))
|
|
if (!(dev->status & VIRTIO_DEVICE_STATUS_DRIVER_OK))
|
|
return 0;
|
|
|
|
dev->flags |= VIRTIO_DEV_READY;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_RUNNING))
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"virtio is now ready for processing.\n");
|
|
return 1;
|
|
}
|
|
|
|
static void *
|
|
inflight_mem_alloc(const char *name, size_t size, int *fd)
|
|
{
|
|
void *ptr;
|
|
int mfd = -1;
|
|
char fname[20] = "/tmp/memfd-XXXXXX";
|
|
|
|
*fd = -1;
|
|
#ifdef MEMFD_SUPPORTED
|
|
mfd = memfd_create(name, MFD_CLOEXEC);
|
|
#else
|
|
RTE_SET_USED(name);
|
|
#endif
|
|
if (mfd == -1) {
|
|
mfd = mkstemp(fname);
|
|
if (mfd == -1) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to get inflight buffer fd\n");
|
|
return NULL;
|
|
}
|
|
|
|
unlink(fname);
|
|
}
|
|
|
|
if (ftruncate(mfd, size) == -1) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to alloc inflight buffer\n");
|
|
close(mfd);
|
|
return NULL;
|
|
}
|
|
|
|
ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd, 0);
|
|
if (ptr == MAP_FAILED) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to mmap inflight buffer\n");
|
|
close(mfd);
|
|
return NULL;
|
|
}
|
|
|
|
*fd = mfd;
|
|
return ptr;
|
|
}
|
|
|
|
static uint32_t
|
|
get_pervq_shm_size_split(uint16_t queue_size)
|
|
{
|
|
return RTE_ALIGN_MUL_CEIL(sizeof(struct rte_vhost_inflight_desc_split) *
|
|
queue_size + sizeof(uint64_t) +
|
|
sizeof(uint16_t) * 4, INFLIGHT_ALIGNMENT);
|
|
}
|
|
|
|
static uint32_t
|
|
get_pervq_shm_size_packed(uint16_t queue_size)
|
|
{
|
|
return RTE_ALIGN_MUL_CEIL(sizeof(struct rte_vhost_inflight_desc_packed)
|
|
* queue_size + sizeof(uint64_t) +
|
|
sizeof(uint16_t) * 6 + sizeof(uint8_t) * 9,
|
|
INFLIGHT_ALIGNMENT);
|
|
}
|
|
|
|
static int
|
|
vhost_user_get_inflight_fd(struct virtio_net **pdev,
|
|
VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct rte_vhost_inflight_info_packed *inflight_packed;
|
|
uint64_t pervq_inflight_size, mmap_size;
|
|
uint16_t num_queues, queue_size;
|
|
struct virtio_net *dev = *pdev;
|
|
int fd, i, j;
|
|
void *addr;
|
|
|
|
if (msg->size != sizeof(msg->payload.inflight)) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"invalid get_inflight_fd message size is %d\n",
|
|
msg->size);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
if (dev->inflight_info == NULL) {
|
|
dev->inflight_info = calloc(1,
|
|
sizeof(struct inflight_mem_info));
|
|
if (!dev->inflight_info) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to alloc dev inflight area\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
dev->inflight_info->fd = -1;
|
|
}
|
|
|
|
num_queues = msg->payload.inflight.num_queues;
|
|
queue_size = msg->payload.inflight.queue_size;
|
|
|
|
VHOST_LOG_CONFIG(INFO, "get_inflight_fd num_queues: %u\n",
|
|
msg->payload.inflight.num_queues);
|
|
VHOST_LOG_CONFIG(INFO, "get_inflight_fd queue_size: %u\n",
|
|
msg->payload.inflight.queue_size);
|
|
|
|
if (vq_is_packed(dev))
|
|
pervq_inflight_size = get_pervq_shm_size_packed(queue_size);
|
|
else
|
|
pervq_inflight_size = get_pervq_shm_size_split(queue_size);
|
|
|
|
mmap_size = num_queues * pervq_inflight_size;
|
|
addr = inflight_mem_alloc("vhost-inflight", mmap_size, &fd);
|
|
if (!addr) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to alloc vhost inflight area\n");
|
|
msg->payload.inflight.mmap_size = 0;
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
memset(addr, 0, mmap_size);
|
|
|
|
if (dev->inflight_info->addr) {
|
|
munmap(dev->inflight_info->addr, dev->inflight_info->size);
|
|
dev->inflight_info->addr = NULL;
|
|
}
|
|
|
|
if (dev->inflight_info->fd >= 0) {
|
|
close(dev->inflight_info->fd);
|
|
dev->inflight_info->fd = -1;
|
|
}
|
|
|
|
dev->inflight_info->addr = addr;
|
|
dev->inflight_info->size = msg->payload.inflight.mmap_size = mmap_size;
|
|
dev->inflight_info->fd = msg->fds[0] = fd;
|
|
msg->payload.inflight.mmap_offset = 0;
|
|
msg->fd_num = 1;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
for (i = 0; i < num_queues; i++) {
|
|
inflight_packed =
|
|
(struct rte_vhost_inflight_info_packed *)addr;
|
|
inflight_packed->used_wrap_counter = 1;
|
|
inflight_packed->old_used_wrap_counter = 1;
|
|
for (j = 0; j < queue_size; j++)
|
|
inflight_packed->desc[j].next = j + 1;
|
|
addr = (void *)((char *)addr + pervq_inflight_size);
|
|
}
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"send inflight mmap_size: %"PRIu64"\n",
|
|
msg->payload.inflight.mmap_size);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"send inflight mmap_offset: %"PRIu64"\n",
|
|
msg->payload.inflight.mmap_offset);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"send inflight fd: %d\n", msg->fds[0]);
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_inflight_fd(struct virtio_net **pdev, VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
uint64_t mmap_size, mmap_offset;
|
|
uint16_t num_queues, queue_size;
|
|
struct virtio_net *dev = *pdev;
|
|
uint32_t pervq_inflight_size;
|
|
struct vhost_virtqueue *vq;
|
|
void *addr;
|
|
int fd, i;
|
|
|
|
fd = msg->fds[0];
|
|
if (msg->size != sizeof(msg->payload.inflight) || fd < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"invalid set_inflight_fd message size is %d,fd is %d\n",
|
|
msg->size, fd);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
mmap_size = msg->payload.inflight.mmap_size;
|
|
mmap_offset = msg->payload.inflight.mmap_offset;
|
|
num_queues = msg->payload.inflight.num_queues;
|
|
queue_size = msg->payload.inflight.queue_size;
|
|
|
|
if (vq_is_packed(dev))
|
|
pervq_inflight_size = get_pervq_shm_size_packed(queue_size);
|
|
else
|
|
pervq_inflight_size = get_pervq_shm_size_split(queue_size);
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd mmap_size: %"PRIu64"\n", mmap_size);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd mmap_offset: %"PRIu64"\n", mmap_offset);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd num_queues: %u\n", num_queues);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd queue_size: %u\n", queue_size);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd fd: %d\n", fd);
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set_inflight_fd pervq_inflight_size: %d\n",
|
|
pervq_inflight_size);
|
|
|
|
if (!dev->inflight_info) {
|
|
dev->inflight_info = calloc(1,
|
|
sizeof(struct inflight_mem_info));
|
|
if (dev->inflight_info == NULL) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to alloc dev inflight area\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
dev->inflight_info->fd = -1;
|
|
}
|
|
|
|
if (dev->inflight_info->addr) {
|
|
munmap(dev->inflight_info->addr, dev->inflight_info->size);
|
|
dev->inflight_info->addr = NULL;
|
|
}
|
|
|
|
addr = mmap(0, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
|
|
fd, mmap_offset);
|
|
if (addr == MAP_FAILED) {
|
|
VHOST_LOG_CONFIG(ERR, "failed to mmap share memory.\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
if (dev->inflight_info->fd >= 0) {
|
|
close(dev->inflight_info->fd);
|
|
dev->inflight_info->fd = -1;
|
|
}
|
|
|
|
dev->inflight_info->fd = fd;
|
|
dev->inflight_info->addr = addr;
|
|
dev->inflight_info->size = mmap_size;
|
|
|
|
for (i = 0; i < num_queues; i++) {
|
|
vq = dev->virtqueue[i];
|
|
if (!vq)
|
|
continue;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
vq->inflight_packed = addr;
|
|
vq->inflight_packed->desc_num = queue_size;
|
|
} else {
|
|
vq->inflight_split = addr;
|
|
vq->inflight_split->desc_num = queue_size;
|
|
}
|
|
addr = (void *)((char *)addr + pervq_inflight_size);
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_vring_call(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_vring_file file;
|
|
struct vhost_virtqueue *vq;
|
|
int expected_fds;
|
|
|
|
expected_fds = (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK) ? 0 : 1;
|
|
if (validate_msg_fds(msg, expected_fds) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
file.index = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
|
|
if (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
|
|
file.fd = VIRTIO_INVALID_EVENTFD;
|
|
else
|
|
file.fd = msg->fds[0];
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"vring call idx:%d file:%d\n", file.index, file.fd);
|
|
|
|
vq = dev->virtqueue[file.index];
|
|
|
|
if (vq->ready) {
|
|
vq->ready = 0;
|
|
vhost_user_notify_queue_state(dev, file.index, 0);
|
|
}
|
|
|
|
if (vq->callfd >= 0)
|
|
close(vq->callfd);
|
|
|
|
vq->callfd = file.fd;
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int vhost_user_set_vring_err(struct virtio_net **pdev __rte_unused,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
int expected_fds;
|
|
|
|
expected_fds = (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK) ? 0 : 1;
|
|
if (validate_msg_fds(msg, expected_fds) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (!(msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK))
|
|
close(msg->fds[0]);
|
|
VHOST_LOG_CONFIG(INFO, "not implemented\n");
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
resubmit_desc_compare(const void *a, const void *b)
|
|
{
|
|
const struct rte_vhost_resubmit_desc *desc0 = a;
|
|
const struct rte_vhost_resubmit_desc *desc1 = b;
|
|
|
|
if (desc1->counter > desc0->counter)
|
|
return 1;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
vhost_check_queue_inflights_split(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq)
|
|
{
|
|
uint16_t i;
|
|
uint16_t resubmit_num = 0, last_io, num;
|
|
struct vring_used *used = vq->used;
|
|
struct rte_vhost_resubmit_info *resubmit;
|
|
struct rte_vhost_inflight_info_split *inflight_split;
|
|
|
|
if (!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)))
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
/* The frontend may still not support the inflight feature
|
|
* although we negotiate the protocol feature.
|
|
*/
|
|
if ((!vq->inflight_split))
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
if (!vq->inflight_split->version) {
|
|
vq->inflight_split->version = INFLIGHT_VERSION;
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
if (vq->resubmit_inflight)
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
inflight_split = vq->inflight_split;
|
|
vq->global_counter = 0;
|
|
last_io = inflight_split->last_inflight_io;
|
|
|
|
if (inflight_split->used_idx != used->idx) {
|
|
inflight_split->desc[last_io].inflight = 0;
|
|
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
|
|
inflight_split->used_idx = used->idx;
|
|
}
|
|
|
|
for (i = 0; i < inflight_split->desc_num; i++) {
|
|
if (inflight_split->desc[i].inflight == 1)
|
|
resubmit_num++;
|
|
}
|
|
|
|
vq->last_avail_idx += resubmit_num;
|
|
|
|
if (resubmit_num) {
|
|
resubmit = calloc(1, sizeof(struct rte_vhost_resubmit_info));
|
|
if (!resubmit) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to allocate memory for resubmit info.\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
resubmit->resubmit_list = calloc(resubmit_num,
|
|
sizeof(struct rte_vhost_resubmit_desc));
|
|
if (!resubmit->resubmit_list) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to allocate memory for inflight desc.\n");
|
|
free(resubmit);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
num = 0;
|
|
for (i = 0; i < vq->inflight_split->desc_num; i++) {
|
|
if (vq->inflight_split->desc[i].inflight == 1) {
|
|
resubmit->resubmit_list[num].index = i;
|
|
resubmit->resubmit_list[num].counter =
|
|
inflight_split->desc[i].counter;
|
|
num++;
|
|
}
|
|
}
|
|
resubmit->resubmit_num = num;
|
|
|
|
if (resubmit->resubmit_num > 1)
|
|
qsort(resubmit->resubmit_list, resubmit->resubmit_num,
|
|
sizeof(struct rte_vhost_resubmit_desc),
|
|
resubmit_desc_compare);
|
|
|
|
vq->global_counter = resubmit->resubmit_list[0].counter + 1;
|
|
vq->resubmit_inflight = resubmit;
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_check_queue_inflights_packed(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq)
|
|
{
|
|
uint16_t i;
|
|
uint16_t resubmit_num = 0, old_used_idx, num;
|
|
struct rte_vhost_resubmit_info *resubmit;
|
|
struct rte_vhost_inflight_info_packed *inflight_packed;
|
|
|
|
if (!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)))
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
/* The frontend may still not support the inflight feature
|
|
* although we negotiate the protocol feature.
|
|
*/
|
|
if ((!vq->inflight_packed))
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
if (!vq->inflight_packed->version) {
|
|
vq->inflight_packed->version = INFLIGHT_VERSION;
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
if (vq->resubmit_inflight)
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
|
|
inflight_packed = vq->inflight_packed;
|
|
vq->global_counter = 0;
|
|
old_used_idx = inflight_packed->old_used_idx;
|
|
|
|
if (inflight_packed->used_idx != old_used_idx) {
|
|
if (inflight_packed->desc[old_used_idx].inflight == 0) {
|
|
inflight_packed->old_used_idx =
|
|
inflight_packed->used_idx;
|
|
inflight_packed->old_used_wrap_counter =
|
|
inflight_packed->used_wrap_counter;
|
|
inflight_packed->old_free_head =
|
|
inflight_packed->free_head;
|
|
} else {
|
|
inflight_packed->used_idx =
|
|
inflight_packed->old_used_idx;
|
|
inflight_packed->used_wrap_counter =
|
|
inflight_packed->old_used_wrap_counter;
|
|
inflight_packed->free_head =
|
|
inflight_packed->old_free_head;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < inflight_packed->desc_num; i++) {
|
|
if (inflight_packed->desc[i].inflight == 1)
|
|
resubmit_num++;
|
|
}
|
|
|
|
if (resubmit_num) {
|
|
resubmit = calloc(1, sizeof(struct rte_vhost_resubmit_info));
|
|
if (resubmit == NULL) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to allocate memory for resubmit info.\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
resubmit->resubmit_list = calloc(resubmit_num,
|
|
sizeof(struct rte_vhost_resubmit_desc));
|
|
if (resubmit->resubmit_list == NULL) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to allocate memory for resubmit desc.\n");
|
|
free(resubmit);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
num = 0;
|
|
for (i = 0; i < inflight_packed->desc_num; i++) {
|
|
if (vq->inflight_packed->desc[i].inflight == 1) {
|
|
resubmit->resubmit_list[num].index = i;
|
|
resubmit->resubmit_list[num].counter =
|
|
inflight_packed->desc[i].counter;
|
|
num++;
|
|
}
|
|
}
|
|
resubmit->resubmit_num = num;
|
|
|
|
if (resubmit->resubmit_num > 1)
|
|
qsort(resubmit->resubmit_list, resubmit->resubmit_num,
|
|
sizeof(struct rte_vhost_resubmit_desc),
|
|
resubmit_desc_compare);
|
|
|
|
vq->global_counter = resubmit->resubmit_list[0].counter + 1;
|
|
vq->resubmit_inflight = resubmit;
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_vring_file file;
|
|
struct vhost_virtqueue *vq;
|
|
int expected_fds;
|
|
|
|
expected_fds = (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK) ? 0 : 1;
|
|
if (validate_msg_fds(msg, expected_fds) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
file.index = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
|
|
if (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
|
|
file.fd = VIRTIO_INVALID_EVENTFD;
|
|
else
|
|
file.fd = msg->fds[0];
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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) {
|
|
if (file.fd != VIRTIO_INVALID_EVENTFD)
|
|
close(file.fd);
|
|
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
*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 (dev->notify_ops->vring_state_changed)
|
|
dev->notify_ops->vring_state_changed(
|
|
dev->vid, file.index, 1);
|
|
}
|
|
|
|
if (vq->ready) {
|
|
vq->ready = 0;
|
|
vhost_user_notify_queue_state(dev, file.index, 0);
|
|
}
|
|
|
|
if (vq->kickfd >= 0)
|
|
close(vq->kickfd);
|
|
vq->kickfd = file.fd;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
if (vhost_check_queue_inflights_packed(dev, vq)) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to inflights for vq: %d\n", file.index);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
} else {
|
|
if (vhost_check_queue_inflights_split(dev, vq)) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to inflights for vq: %d\n", file.index);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
/*
|
|
* when virtio is stopped, qemu will send us the GET_VRING_BASE message.
|
|
*/
|
|
static int
|
|
vhost_user_get_vring_base(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
|
|
uint64_t val;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
/* We have to stop the queue (virtio) if it is running. */
|
|
vhost_destroy_device_notify(dev);
|
|
|
|
dev->flags &= ~VIRTIO_DEV_READY;
|
|
dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
|
|
|
|
/* Here we are safe to get the indexes */
|
|
if (vq_is_packed(dev)) {
|
|
/*
|
|
* Bit[0:14]: avail index
|
|
* Bit[15]: avail wrap counter
|
|
*/
|
|
val = vq->last_avail_idx & 0x7fff;
|
|
val |= vq->avail_wrap_counter << 15;
|
|
msg->payload.state.num = val;
|
|
} else {
|
|
msg->payload.state.num = vq->last_avail_idx;
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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;
|
|
|
|
vq->signalled_used_valid = false;
|
|
|
|
if (vq_is_packed(dev)) {
|
|
rte_free(vq->shadow_used_packed);
|
|
vq->shadow_used_packed = NULL;
|
|
} else {
|
|
rte_free(vq->shadow_used_split);
|
|
vq->shadow_used_split = NULL;
|
|
if (vq->async_pkts_pending)
|
|
rte_free(vq->async_pkts_pending);
|
|
if (vq->async_pkts_info)
|
|
rte_free(vq->async_pkts_info);
|
|
vq->async_pkts_pending = NULL;
|
|
vq->async_pkts_info = NULL;
|
|
}
|
|
|
|
rte_free(vq->batch_copy_elems);
|
|
vq->batch_copy_elems = NULL;
|
|
|
|
msg->size = sizeof(msg->payload.state);
|
|
msg->fd_num = 0;
|
|
|
|
vring_invalidate(dev, vq);
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
}
|
|
|
|
/*
|
|
* 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 **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
int enable = (int)msg->payload.state.num;
|
|
int index = (int)msg->payload.state.index;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"set queue enable: %d to qp idx: %d\n",
|
|
enable, index);
|
|
|
|
if (enable && dev->virtqueue[index]->async_registered) {
|
|
if (dev->virtqueue[index]->async_pkts_inflight_n) {
|
|
VHOST_LOG_CONFIG(ERR, "failed to enable vring. "
|
|
"async inflight packets must be completed first\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
}
|
|
|
|
dev->virtqueue[index]->enabled = enable;
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_get_protocol_features(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
uint64_t features, protocol_features;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
rte_vhost_driver_get_features(dev->ifname, &features);
|
|
rte_vhost_driver_get_protocol_features(dev->ifname, &protocol_features);
|
|
|
|
msg->payload.u64 = protocol_features;
|
|
msg->size = sizeof(msg->payload.u64);
|
|
msg->fd_num = 0;
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_protocol_features(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
uint64_t protocol_features = msg->payload.u64;
|
|
uint64_t slave_protocol_features = 0;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
rte_vhost_driver_get_protocol_features(dev->ifname,
|
|
&slave_protocol_features);
|
|
if (protocol_features & ~slave_protocol_features) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"(%d) received invalid protocol features.\n",
|
|
dev->vid);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
dev->protocol_features = protocol_features;
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"negotiated Vhost-user protocol features: 0x%" PRIx64 "\n",
|
|
dev->protocol_features);
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_log_base(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
int fd = msg->fds[0];
|
|
uint64_t size, off;
|
|
void *addr;
|
|
|
|
if (validate_msg_fds(msg, 1) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (fd < 0) {
|
|
VHOST_LOG_CONFIG(ERR, "invalid log fd: %d\n", fd);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
if (msg->size != sizeof(VhostUserLog)) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"invalid log base msg size: %"PRId32" != %d\n",
|
|
msg->size, (int)sizeof(VhostUserLog));
|
|
goto close_msg_fds;
|
|
}
|
|
|
|
size = msg->payload.log.mmap_size;
|
|
off = msg->payload.log.mmap_offset;
|
|
|
|
/* Check for mmap size and offset overflow. */
|
|
if (off >= -size) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"log offset %#"PRIx64" and log size %#"PRIx64" overflow\n",
|
|
off, size);
|
|
goto close_msg_fds;
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"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) {
|
|
VHOST_LOG_CONFIG(ERR, "mmap log base failed!\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/*
|
|
* The spec is not clear about it (yet), but QEMU doesn't expect
|
|
* any payload in the reply.
|
|
*/
|
|
msg->size = 0;
|
|
msg->fd_num = 0;
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
|
|
close_msg_fds:
|
|
close_msg_fds(msg);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
static int vhost_user_set_log_fd(struct virtio_net **pdev __rte_unused,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
if (validate_msg_fds(msg, 1) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
close(msg->fds[0]);
|
|
VHOST_LOG_CONFIG(INFO, "not implemented.\n");
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
/*
|
|
* 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 **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
uint8_t *mac = (uint8_t *)&msg->payload.u64;
|
|
struct rte_vdpa_device *vdpa_dev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
":: 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().
|
|
*
|
|
* __ATOMIC_RELEASE ordering is for making sure the mac is
|
|
* copied before the flag is set.
|
|
*/
|
|
__atomic_store_n(&dev->broadcast_rarp, 1, __ATOMIC_RELEASE);
|
|
vdpa_dev = dev->vdpa_dev;
|
|
if (vdpa_dev && vdpa_dev->ops->migration_done)
|
|
vdpa_dev->ops->migration_done(dev->vid);
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_net_set_mtu(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (msg->payload.u64 < VIRTIO_MIN_MTU ||
|
|
msg->payload.u64 > VIRTIO_MAX_MTU) {
|
|
VHOST_LOG_CONFIG(ERR, "Invalid MTU size (%"PRIu64")\n",
|
|
msg->payload.u64);
|
|
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
dev->mtu = msg->payload.u64;
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_req_fd(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
int fd = msg->fds[0];
|
|
|
|
if (validate_msg_fds(msg, 1) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (fd < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Invalid file descriptor for slave channel (%d)\n",
|
|
fd);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
if (dev->slave_req_fd >= 0)
|
|
close(dev->slave_req_fd);
|
|
|
|
dev->slave_req_fd = fd;
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
is_vring_iotlb_split(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
|
|
{
|
|
struct vhost_vring_addr *ra;
|
|
uint64_t start, end, len;
|
|
|
|
start = imsg->iova;
|
|
end = start + imsg->size;
|
|
|
|
ra = &vq->ring_addrs;
|
|
len = sizeof(struct vring_desc) * vq->size;
|
|
if (ra->desc_user_addr < end && (ra->desc_user_addr + len) > start)
|
|
return 1;
|
|
|
|
len = sizeof(struct vring_avail) + sizeof(uint16_t) * vq->size;
|
|
if (ra->avail_user_addr < end && (ra->avail_user_addr + len) > start)
|
|
return 1;
|
|
|
|
len = sizeof(struct vring_used) +
|
|
sizeof(struct vring_used_elem) * vq->size;
|
|
if (ra->used_user_addr < end && (ra->used_user_addr + len) > start)
|
|
return 1;
|
|
|
|
if (ra->flags & (1 << VHOST_VRING_F_LOG)) {
|
|
len = sizeof(uint64_t);
|
|
if (ra->log_guest_addr < end &&
|
|
(ra->log_guest_addr + len) > start)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
is_vring_iotlb_packed(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
|
|
{
|
|
struct vhost_vring_addr *ra;
|
|
uint64_t start, end, len;
|
|
|
|
start = imsg->iova;
|
|
end = start + imsg->size;
|
|
|
|
ra = &vq->ring_addrs;
|
|
len = sizeof(struct vring_packed_desc) * vq->size;
|
|
if (ra->desc_user_addr < end && (ra->desc_user_addr + len) > start)
|
|
return 1;
|
|
|
|
len = sizeof(struct vring_packed_desc_event);
|
|
if (ra->avail_user_addr < end && (ra->avail_user_addr + len) > start)
|
|
return 1;
|
|
|
|
len = sizeof(struct vring_packed_desc_event);
|
|
if (ra->used_user_addr < end && (ra->used_user_addr + len) > start)
|
|
return 1;
|
|
|
|
if (ra->flags & (1 << VHOST_VRING_F_LOG)) {
|
|
len = sizeof(uint64_t);
|
|
if (ra->log_guest_addr < end &&
|
|
(ra->log_guest_addr + len) > start)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int is_vring_iotlb(struct virtio_net *dev,
|
|
struct vhost_virtqueue *vq,
|
|
struct vhost_iotlb_msg *imsg)
|
|
{
|
|
if (vq_is_packed(dev))
|
|
return is_vring_iotlb_packed(vq, imsg);
|
|
else
|
|
return is_vring_iotlb_split(vq, imsg);
|
|
}
|
|
|
|
static int
|
|
vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
struct vhost_iotlb_msg *imsg = &msg->payload.iotlb;
|
|
uint16_t i;
|
|
uint64_t vva, len;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
switch (imsg->type) {
|
|
case VHOST_IOTLB_UPDATE:
|
|
len = imsg->size;
|
|
vva = qva_to_vva(dev, imsg->uaddr, &len);
|
|
if (!vva)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
for (i = 0; i < dev->nr_vring; i++) {
|
|
struct vhost_virtqueue *vq = dev->virtqueue[i];
|
|
|
|
if (!vq)
|
|
continue;
|
|
|
|
vhost_user_iotlb_cache_insert(vq, imsg->iova, vva,
|
|
len, imsg->perm);
|
|
|
|
if (is_vring_iotlb(dev, 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];
|
|
|
|
if (!vq)
|
|
continue;
|
|
|
|
vhost_user_iotlb_cache_remove(vq, imsg->iova,
|
|
imsg->size);
|
|
|
|
if (is_vring_iotlb(dev, vq, imsg))
|
|
vring_invalidate(dev, vq);
|
|
}
|
|
break;
|
|
default:
|
|
VHOST_LOG_CONFIG(ERR, "Invalid IOTLB message type (%d)\n",
|
|
imsg->type);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_postcopy_advise(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
#ifdef RTE_LIBRTE_VHOST_POSTCOPY
|
|
struct uffdio_api api_struct;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
dev->postcopy_ufd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK);
|
|
|
|
if (dev->postcopy_ufd == -1) {
|
|
VHOST_LOG_CONFIG(ERR, "Userfaultfd not available: %s\n",
|
|
strerror(errno));
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
api_struct.api = UFFD_API;
|
|
api_struct.features = 0;
|
|
if (ioctl(dev->postcopy_ufd, UFFDIO_API, &api_struct)) {
|
|
VHOST_LOG_CONFIG(ERR, "UFFDIO_API ioctl failure: %s\n",
|
|
strerror(errno));
|
|
close(dev->postcopy_ufd);
|
|
dev->postcopy_ufd = -1;
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
msg->fds[0] = dev->postcopy_ufd;
|
|
msg->fd_num = 1;
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
#else
|
|
dev->postcopy_ufd = -1;
|
|
msg->fd_num = 0;
|
|
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_postcopy_listen(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg __rte_unused,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
if (dev->mem && dev->mem->nregions) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Regions already registered at postcopy-listen\n");
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
dev->postcopy_listening = 1;
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
static int
|
|
vhost_user_postcopy_end(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
dev->postcopy_listening = 0;
|
|
if (dev->postcopy_ufd >= 0) {
|
|
close(dev->postcopy_ufd);
|
|
dev->postcopy_ufd = -1;
|
|
}
|
|
|
|
msg->payload.u64 = 0;
|
|
msg->size = sizeof(msg->payload.u64);
|
|
msg->fd_num = 0;
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
}
|
|
|
|
static int
|
|
vhost_user_get_status(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
msg->payload.u64 = dev->status;
|
|
msg->size = sizeof(msg->payload.u64);
|
|
msg->fd_num = 0;
|
|
|
|
return RTE_VHOST_MSG_RESULT_REPLY;
|
|
}
|
|
|
|
static int
|
|
vhost_user_set_status(struct virtio_net **pdev, struct VhostUserMsg *msg,
|
|
int main_fd __rte_unused)
|
|
{
|
|
struct virtio_net *dev = *pdev;
|
|
|
|
if (validate_msg_fds(msg, 0) != 0)
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
|
|
/* As per Virtio specification, the device status is 8bits long */
|
|
if (msg->payload.u64 > UINT8_MAX) {
|
|
VHOST_LOG_CONFIG(ERR, "Invalid VHOST_USER_SET_STATUS payload 0x%" PRIx64 "\n",
|
|
msg->payload.u64);
|
|
return RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
dev->status = msg->payload.u64;
|
|
|
|
if ((dev->status & VIRTIO_DEVICE_STATUS_FEATURES_OK) &&
|
|
(dev->flags & VIRTIO_DEV_FEATURES_FAILED)) {
|
|
VHOST_LOG_CONFIG(ERR, "FEATURES_OK bit is set but feature negotiation failed\n");
|
|
/*
|
|
* Clear the bit to let the driver know about the feature
|
|
* negotiation failure
|
|
*/
|
|
dev->status &= ~VIRTIO_DEVICE_STATUS_FEATURES_OK;
|
|
}
|
|
|
|
VHOST_LOG_CONFIG(INFO, "New device status(0x%08x):\n"
|
|
"\t-RESET: %u\n"
|
|
"\t-ACKNOWLEDGE: %u\n"
|
|
"\t-DRIVER: %u\n"
|
|
"\t-FEATURES_OK: %u\n"
|
|
"\t-DRIVER_OK: %u\n"
|
|
"\t-DEVICE_NEED_RESET: %u\n"
|
|
"\t-FAILED: %u\n",
|
|
dev->status,
|
|
(dev->status == VIRTIO_DEVICE_STATUS_RESET),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_ACK),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_DRIVER),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_FEATURES_OK),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_DRIVER_OK),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_DEV_NEED_RESET),
|
|
!!(dev->status & VIRTIO_DEVICE_STATUS_FAILED));
|
|
|
|
return RTE_VHOST_MSG_RESULT_OK;
|
|
}
|
|
|
|
typedef int (*vhost_message_handler_t)(struct virtio_net **pdev,
|
|
struct VhostUserMsg *msg,
|
|
int main_fd);
|
|
static vhost_message_handler_t vhost_message_handlers[VHOST_USER_MAX] = {
|
|
[VHOST_USER_NONE] = NULL,
|
|
[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_req_fd,
|
|
[VHOST_USER_IOTLB_MSG] = vhost_user_iotlb_msg,
|
|
[VHOST_USER_POSTCOPY_ADVISE] = vhost_user_set_postcopy_advise,
|
|
[VHOST_USER_POSTCOPY_LISTEN] = vhost_user_set_postcopy_listen,
|
|
[VHOST_USER_POSTCOPY_END] = vhost_user_postcopy_end,
|
|
[VHOST_USER_GET_INFLIGHT_FD] = vhost_user_get_inflight_fd,
|
|
[VHOST_USER_SET_INFLIGHT_FD] = vhost_user_set_inflight_fd,
|
|
[VHOST_USER_SET_STATUS] = vhost_user_set_status,
|
|
[VHOST_USER_GET_STATUS] = vhost_user_get_status,
|
|
};
|
|
|
|
/* 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, &msg->fd_num);
|
|
if (ret <= 0) {
|
|
return ret;
|
|
} else if (ret != VHOST_USER_HDR_SIZE) {
|
|
VHOST_LOG_CONFIG(ERR, "Unexpected header size read\n");
|
|
close_msg_fds(msg);
|
|
return -1;
|
|
}
|
|
|
|
if (msg->size) {
|
|
if (msg->size > sizeof(msg->payload)) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"read control message failed\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
send_vhost_message(int sockfd, struct VhostUserMsg *msg)
|
|
{
|
|
if (!msg)
|
|
return 0;
|
|
|
|
return send_fd_message(sockfd, (char *)msg,
|
|
VHOST_USER_HDR_SIZE + msg->size, msg->fds, msg->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);
|
|
}
|
|
|
|
static int
|
|
send_vhost_slave_message(struct virtio_net *dev, struct VhostUserMsg *msg)
|
|
{
|
|
int ret;
|
|
|
|
if (msg->flags & VHOST_USER_NEED_REPLY)
|
|
rte_spinlock_lock(&dev->slave_req_lock);
|
|
|
|
ret = send_vhost_message(dev->slave_req_fd, msg);
|
|
if (ret < 0 && (msg->flags & VHOST_USER_NEED_REPLY))
|
|
rte_spinlock_unlock(&dev->slave_req_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Allocate a queue pair if it hasn't been allocated yet
|
|
*/
|
|
static int
|
|
vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev,
|
|
struct VhostUserMsg *msg)
|
|
{
|
|
uint32_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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"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 ret;
|
|
int unlock_required = 0;
|
|
bool handled;
|
|
int request;
|
|
uint32_t i;
|
|
|
|
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) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"failed to get callback ops for driver %s\n",
|
|
dev->ifname);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
ret = read_vhost_message(fd, &msg);
|
|
if (ret <= 0) {
|
|
if (ret < 0)
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"vhost read message failed\n");
|
|
else
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"vhost peer closed\n");
|
|
|
|
return -1;
|
|
}
|
|
|
|
ret = 0;
|
|
request = msg.request.master;
|
|
if (request > VHOST_USER_NONE && request < VHOST_USER_MAX &&
|
|
vhost_message_str[request]) {
|
|
if (request != VHOST_USER_IOTLB_MSG)
|
|
VHOST_LOG_CONFIG(INFO, "read message %s\n",
|
|
vhost_message_str[request]);
|
|
else
|
|
VHOST_LOG_CONFIG(DEBUG, "read message %s\n",
|
|
vhost_message_str[request]);
|
|
} else {
|
|
VHOST_LOG_CONFIG(DEBUG, "External request %d\n", request);
|
|
}
|
|
|
|
ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
|
|
if (ret < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"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 (request) {
|
|
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:
|
|
if (!(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED)) {
|
|
vhost_user_lock_all_queue_pairs(dev);
|
|
unlock_required = 1;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
|
|
}
|
|
|
|
handled = false;
|
|
if (dev->extern_ops.pre_msg_handle) {
|
|
ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
|
|
(void *)&msg);
|
|
switch (ret) {
|
|
case RTE_VHOST_MSG_RESULT_REPLY:
|
|
send_vhost_reply(fd, &msg);
|
|
/* Fall-through */
|
|
case RTE_VHOST_MSG_RESULT_ERR:
|
|
case RTE_VHOST_MSG_RESULT_OK:
|
|
handled = true;
|
|
goto skip_to_post_handle;
|
|
case RTE_VHOST_MSG_RESULT_NOT_HANDLED:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (request > VHOST_USER_NONE && request < VHOST_USER_MAX) {
|
|
if (!vhost_message_handlers[request])
|
|
goto skip_to_post_handle;
|
|
ret = vhost_message_handlers[request](&dev, &msg, fd);
|
|
|
|
switch (ret) {
|
|
case RTE_VHOST_MSG_RESULT_ERR:
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Processing %s failed.\n",
|
|
vhost_message_str[request]);
|
|
handled = true;
|
|
break;
|
|
case RTE_VHOST_MSG_RESULT_OK:
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"Processing %s succeeded.\n",
|
|
vhost_message_str[request]);
|
|
handled = true;
|
|
break;
|
|
case RTE_VHOST_MSG_RESULT_REPLY:
|
|
VHOST_LOG_CONFIG(DEBUG,
|
|
"Processing %s succeeded and needs reply.\n",
|
|
vhost_message_str[request]);
|
|
send_vhost_reply(fd, &msg);
|
|
handled = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
skip_to_post_handle:
|
|
if (ret != RTE_VHOST_MSG_RESULT_ERR &&
|
|
dev->extern_ops.post_msg_handle) {
|
|
ret = (*dev->extern_ops.post_msg_handle)(dev->vid,
|
|
(void *)&msg);
|
|
switch (ret) {
|
|
case RTE_VHOST_MSG_RESULT_REPLY:
|
|
send_vhost_reply(fd, &msg);
|
|
/* Fall-through */
|
|
case RTE_VHOST_MSG_RESULT_ERR:
|
|
case RTE_VHOST_MSG_RESULT_OK:
|
|
handled = true;
|
|
case RTE_VHOST_MSG_RESULT_NOT_HANDLED:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (unlock_required)
|
|
vhost_user_unlock_all_queue_pairs(dev);
|
|
|
|
/* If message was not handled at this stage, treat it as an error */
|
|
if (!handled) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"vhost message (req: %d) was not handled.\n", request);
|
|
close_msg_fds(&msg);
|
|
ret = RTE_VHOST_MSG_RESULT_ERR;
|
|
}
|
|
|
|
/*
|
|
* If the request required a reply that was already sent,
|
|
* this optional reply-ack won't be sent as the
|
|
* VHOST_USER_NEED_REPLY was cleared in send_vhost_reply().
|
|
*/
|
|
if (msg.flags & VHOST_USER_NEED_REPLY) {
|
|
msg.payload.u64 = ret == RTE_VHOST_MSG_RESULT_ERR;
|
|
msg.size = sizeof(msg.payload.u64);
|
|
msg.fd_num = 0;
|
|
send_vhost_reply(fd, &msg);
|
|
} else if (ret == RTE_VHOST_MSG_RESULT_ERR) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"vhost message handling failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < dev->nr_vring; i++) {
|
|
struct vhost_virtqueue *vq = dev->virtqueue[i];
|
|
bool cur_ready = vq_is_ready(dev, vq);
|
|
|
|
if (cur_ready != (vq && vq->ready)) {
|
|
vq->ready = cur_ready;
|
|
vhost_user_notify_queue_state(dev, i, cur_ready);
|
|
}
|
|
}
|
|
|
|
|
|
if (!virtio_is_ready(dev))
|
|
goto out;
|
|
|
|
/*
|
|
* Virtio is now ready. If not done already, it is time
|
|
* to notify the application it can process the rings and
|
|
* configure the vDPA device if present.
|
|
*/
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
|
|
if (dev->notify_ops->new_device(dev->vid) == 0)
|
|
dev->flags |= VIRTIO_DEV_RUNNING;
|
|
}
|
|
|
|
vdpa_dev = dev->vdpa_dev;
|
|
if (!vdpa_dev)
|
|
goto out;
|
|
|
|
if (!(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED)) {
|
|
if (vdpa_dev->ops->dev_conf(dev->vid))
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Failed to configure vDPA device\n");
|
|
else
|
|
dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
|
|
}
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int process_slave_message_reply(struct virtio_net *dev,
|
|
const struct VhostUserMsg *msg)
|
|
{
|
|
struct VhostUserMsg msg_reply;
|
|
int ret;
|
|
|
|
if ((msg->flags & VHOST_USER_NEED_REPLY) == 0)
|
|
return 0;
|
|
|
|
ret = read_vhost_message(dev->slave_req_fd, &msg_reply);
|
|
if (ret <= 0) {
|
|
if (ret < 0)
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"vhost read slave message reply failed\n");
|
|
else
|
|
VHOST_LOG_CONFIG(INFO,
|
|
"vhost peer closed\n");
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
if (msg_reply.request.slave != msg->request.slave) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Received unexpected msg type (%u), expected %u\n",
|
|
msg_reply.request.slave, msg->request.slave);
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
|
|
ret = msg_reply.payload.u64 ? -1 : 0;
|
|
|
|
out:
|
|
rte_spinlock_unlock(&dev->slave_req_lock);
|
|
return ret;
|
|
}
|
|
|
|
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);
|
|
if (ret < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Failed to send IOTLB miss message (%d)\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vhost_user_slave_config_change(struct virtio_net *dev, bool need_reply)
|
|
{
|
|
int ret;
|
|
struct VhostUserMsg msg = {
|
|
.request.slave = VHOST_USER_SLAVE_CONFIG_CHANGE_MSG,
|
|
.flags = VHOST_USER_VERSION,
|
|
.size = 0,
|
|
};
|
|
|
|
if (need_reply)
|
|
msg.flags |= VHOST_USER_NEED_REPLY;
|
|
|
|
ret = send_vhost_slave_message(dev, &msg);
|
|
if (ret < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Failed to send config change (%d)\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
return process_slave_message_reply(dev, &msg);
|
|
}
|
|
|
|
int
|
|
rte_vhost_slave_config_change(int vid, bool need_reply)
|
|
{
|
|
struct virtio_net *dev;
|
|
|
|
dev = get_device(vid);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
return vhost_user_slave_config_change(dev, need_reply);
|
|
}
|
|
|
|
static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
|
|
int index, int fd,
|
|
uint64_t offset,
|
|
uint64_t size)
|
|
{
|
|
int ret;
|
|
struct VhostUserMsg msg = {
|
|
.request.slave = VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG,
|
|
.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY,
|
|
.size = sizeof(msg.payload.area),
|
|
.payload.area = {
|
|
.u64 = index & VHOST_USER_VRING_IDX_MASK,
|
|
.size = size,
|
|
.offset = offset,
|
|
},
|
|
};
|
|
|
|
if (fd < 0)
|
|
msg.payload.area.u64 |= VHOST_USER_VRING_NOFD_MASK;
|
|
else {
|
|
msg.fds[0] = fd;
|
|
msg.fd_num = 1;
|
|
}
|
|
|
|
ret = send_vhost_slave_message(dev, &msg);
|
|
if (ret < 0) {
|
|
VHOST_LOG_CONFIG(ERR,
|
|
"Failed to set host notifier (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return process_slave_message_reply(dev, &msg);
|
|
}
|
|
|
|
int rte_vhost_host_notifier_ctrl(int vid, uint16_t qid, bool enable)
|
|
{
|
|
struct virtio_net *dev;
|
|
struct rte_vdpa_device *vdpa_dev;
|
|
int vfio_device_fd, ret = 0;
|
|
uint64_t offset, size;
|
|
unsigned int i, q_start, q_last;
|
|
|
|
dev = get_device(vid);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
vdpa_dev = dev->vdpa_dev;
|
|
if (vdpa_dev == NULL)
|
|
return -ENODEV;
|
|
|
|
if (!(dev->features & (1ULL << VIRTIO_F_VERSION_1)) ||
|
|
!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) ||
|
|
!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_REQ)) ||
|
|
!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD)) ||
|
|
!(dev->protocol_features &
|
|
(1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER)))
|
|
return -ENOTSUP;
|
|
|
|
if (qid == RTE_VHOST_QUEUE_ALL) {
|
|
q_start = 0;
|
|
q_last = dev->nr_vring - 1;
|
|
} else {
|
|
if (qid >= dev->nr_vring)
|
|
return -EINVAL;
|
|
q_start = qid;
|
|
q_last = qid;
|
|
}
|
|
|
|
RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_vfio_device_fd, -ENOTSUP);
|
|
RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_notify_area, -ENOTSUP);
|
|
|
|
vfio_device_fd = vdpa_dev->ops->get_vfio_device_fd(vid);
|
|
if (vfio_device_fd < 0)
|
|
return -ENOTSUP;
|
|
|
|
if (enable) {
|
|
for (i = q_start; i <= q_last; i++) {
|
|
if (vdpa_dev->ops->get_notify_area(vid, i, &offset,
|
|
&size) < 0) {
|
|
ret = -ENOTSUP;
|
|
goto disable;
|
|
}
|
|
|
|
if (vhost_user_slave_set_vring_host_notifier(dev, i,
|
|
vfio_device_fd, offset, size) < 0) {
|
|
ret = -EFAULT;
|
|
goto disable;
|
|
}
|
|
}
|
|
} else {
|
|
disable:
|
|
for (i = q_start; i <= q_last; i++) {
|
|
vhost_user_slave_set_vring_host_notifier(dev, i, -1,
|
|
0, 0);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|