virtio-net.c (333ec4ca6a9f604331e2349cb91e9635f65d6462) virtio-net.c (ba7eadb5927633d487064b518bf6fd001369e30c)
1/*
2 * Virtio Network Device
3 *
4 * Copyright IBM, Corp. 2007
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 *

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875 n->curr_queues = queues;
876 /* stop the backend before changing the number of queues to avoid handling a
877 * disabled queue */
878 virtio_net_set_status(vdev, vdev->status);
879 virtio_net_set_queues(n);
880
881 return VIRTIO_NET_OK;
882}
1/*
2 * Virtio Network Device
3 *
4 * Copyright IBM, Corp. 2007
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 *

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875 n->curr_queues = queues;
876 /* stop the backend before changing the number of queues to avoid handling a
877 * disabled queue */
878 virtio_net_set_status(vdev, vdev->status);
879 virtio_net_set_queues(n);
880
881 return VIRTIO_NET_OK;
882}
883
883static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
884{
885 VirtIONet *n = VIRTIO_NET(vdev);
886 struct virtio_net_ctrl_hdr ctrl;
887 virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
888 VirtQueueElement *elem;
889 size_t s;
890 struct iovec *iov, *iov2;
891 unsigned int iov_cnt;
892
893 for (;;) {
894 elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
895 if (!elem) {
896 break;
897 }
898 if (iov_size(elem->in_sg, elem->in_num) < sizeof(status) ||
899 iov_size(elem->out_sg, elem->out_num) < sizeof(ctrl)) {
884static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
885{
886 VirtIONet *n = VIRTIO_NET(vdev);
887 struct virtio_net_ctrl_hdr ctrl;
888 virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
889 VirtQueueElement *elem;
890 size_t s;
891 struct iovec *iov, *iov2;
892 unsigned int iov_cnt;
893
894 for (;;) {
895 elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
896 if (!elem) {
897 break;
898 }
899 if (iov_size(elem->in_sg, elem->in_num) < sizeof(status) ||
900 iov_size(elem->out_sg, elem->out_num) < sizeof(ctrl)) {
900 error_report("virtio-net ctrl missing headers");
901 exit(1);
901 virtio_error(vdev, "virtio-net ctrl missing headers");
902 virtqueue_detach_element(vq, elem, 0);
903 g_free(elem);
904 break;
902 }
903
904 iov_cnt = elem->out_num;
905 iov2 = iov = g_memdup(elem->out_sg, sizeof(struct iovec) * elem->out_num);
906 s = iov_to_buf(iov, iov_cnt, 0, &ctrl, sizeof(ctrl));
907 iov_discard_front(&iov, &iov_cnt, sizeof(ctrl));
908 if (s != sizeof(ctrl)) {
909 status = VIRTIO_NET_ERR;

--- 1037 unchanged lines hidden --- 		905 }
906
907 iov_cnt = elem->out_num;
908 iov2 = iov = g_memdup(elem->out_sg, sizeof(struct iovec) * elem->out_num);
909 s = iov_to_buf(iov, iov_cnt, 0, &ctrl, sizeof(ctrl));
910 iov_discard_front(&iov, &iov_cnt, sizeof(ctrl));
911 if (s != sizeof(ctrl)) {
912 status = VIRTIO_NET_ERR;

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