if (!virtio_net_can_receive(&n->nic->nc))
return -1;
- if (!virtio_net_has_buffers(n, size))
+ /* hdr_len refers to the header we supply to the guest */
+ hdr_len = n->mergeable_rx_bufs ?
+ sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr);
+
+
+ if (!virtio_net_has_buffers(n, size + hdr_len))
return 0;
if (!receive_filter(n, buf, size))
return size;
- /* hdr_len refers to the header we supply to the guest */
- hdr_len = n->mergeable_rx_bufs ?
- sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr);
-
offset = i = 0;
while (offset < size) {
virtqueue_pop(n->rx_vq, &elem) == 0) {
if (i == 0)
return -1;
- fprintf(stderr, "virtio-net truncating packet\n");
+ fprintf(stderr, "virtio-net truncating packet: "
+ "offset %zd, size %zd, hdr_len %zd\n",
+ offset, size, hdr_len);
exit(1);
}