Esempio n. 1
0
void
user_set_vring_call(int vid, struct VhostUserMsg *pmsg)
{
	struct vhost_vring_file file;

	file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
	if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
		file.fd = VIRTIO_INVALID_EVENTFD;
	else
		file.fd = pmsg->fds[0];
	RTE_LOG(INFO, VHOST_CONFIG,
		"vring call idx:%d file:%d\n", file.index, file.fd);
	vhost_set_vring_call(vid, &file);
}
Esempio n. 2
0
/*
 * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
 * of IOCTL a buffer is requested to read or to write. This request is handled
 * by FUSE and the buffer is then given to CUSE.
 */
static void
vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
		struct fuse_file_info *fi, __rte_unused unsigned flags,
		const void *in_buf, size_t in_bufsz, size_t out_bufsz)
{
	struct vhost_device_ctx ctx = fuse_req_to_vhost_ctx(req, fi);
	struct vhost_vring_file file;
	struct vhost_vring_state state;
	struct vhost_vring_addr addr;
	uint64_t features;
	uint32_t index;
	int result = 0;

	switch (cmd) {
	case VHOST_NET_SET_BACKEND:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
		if (!in_buf) {
			VHOST_IOCTL_RETRY(sizeof(file), 0);
			break;
		}
		file = *(const struct vhost_vring_file *)in_buf;
		result = cuse_set_backend(ctx, &file);
		fuse_reply_ioctl(req, result, NULL, 0);
		break;

	case VHOST_GET_FEATURES:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
		VHOST_IOCTL_W(uint64_t, features, vhost_get_features);
		break;

	case VHOST_SET_FEATURES:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
		VHOST_IOCTL_R(uint64_t, features, vhost_set_features);
		break;

	case VHOST_RESET_OWNER:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
		VHOST_IOCTL(vhost_reset_owner);
		break;

	case VHOST_SET_OWNER:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
		VHOST_IOCTL(vhost_set_owner);
		break;

	case VHOST_SET_MEM_TABLE:
		/*TODO fix race condition.*/
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
		static struct vhost_memory mem_temp;

		switch (in_bufsz) {
		case 0:
			VHOST_IOCTL_RETRY(sizeof(struct vhost_memory), 0);
			break;

		case sizeof(struct vhost_memory):
			mem_temp = *(const struct vhost_memory *) in_buf;

			if (mem_temp.nregions > 0) {
				VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
					(sizeof(struct vhost_memory_region) *
						mem_temp.nregions), 0);
			} else {
				result = -1;
				fuse_reply_ioctl(req, result, NULL, 0);
			}
			break;

		default:
			result = cuse_set_mem_table(ctx, in_buf,
				mem_temp.nregions);
			if (result)
				fuse_reply_err(req, EINVAL);
			else
				fuse_reply_ioctl(req, result, NULL, 0);
		}
		break;

	case VHOST_SET_VRING_NUM:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
		VHOST_IOCTL_R(struct vhost_vring_state, state,
			vhost_set_vring_num);
		break;

	case VHOST_SET_VRING_BASE:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
		VHOST_IOCTL_R(struct vhost_vring_state, state,
			vhost_set_vring_base);
		break;

	case VHOST_GET_VRING_BASE:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
		VHOST_IOCTL_RW(uint32_t, index,
			struct vhost_vring_state, state, vhost_get_vring_base);
		break;

	case VHOST_SET_VRING_ADDR:
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
		VHOST_IOCTL_R(struct vhost_vring_addr, addr,
			vhost_set_vring_addr);
		break;

	case VHOST_SET_VRING_KICK:
	case VHOST_SET_VRING_CALL:
		if (cmd == VHOST_SET_VRING_KICK)
			LOG_DEBUG(VHOST_CONFIG,
				"(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n",
			ctx.fh);
		else
			LOG_DEBUG(VHOST_CONFIG,
				"(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n",
			ctx.fh);
		if (!in_buf)
			VHOST_IOCTL_RETRY(sizeof(struct vhost_vring_file), 0);
		else {
			int fd;
			file = *(const struct vhost_vring_file *)in_buf;
			LOG_DEBUG(VHOST_CONFIG,
				"idx:%d fd:%d\n", file.index, file.fd);
			fd = eventfd_copy(file.fd, ctx.pid);
			if (fd < 0) {
				fuse_reply_ioctl(req, -1, NULL, 0);
				result = -1;
				break;
			}
			file.fd = fd;
			if (cmd == VHOST_SET_VRING_KICK) {
				result = vhost_set_vring_kick(ctx, &file);
				fuse_reply_ioctl(req, result, NULL, 0);
			} else {
				result = vhost_set_vring_call(ctx, &file);
				fuse_reply_ioctl(req, result, NULL, 0);
			}
		}
		break;

	default:
		RTE_LOG(ERR, VHOST_CONFIG,
			"(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
		result = -1;
		fuse_reply_ioctl(req, result, NULL, 0);
	}

	if (result < 0)
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
	else
		LOG_DEBUG(VHOST_CONFIG,
			"(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
}