Palacios Public Git Repository

To checkout Palacios execute

  git clone http://v3vee.org/palacios/palacios.web/palacios.git
This will give you the master branch. You probably want the devel branch or one of the release branches. To switch to the devel branch, simply execute
  cd palacios
  git checkout --track -b devel origin/devel
The other branches are similar.


Minor fix
Lei Xia [Tue, 5 Jan 2010 01:54:11 +0000 (19:54 -0600)]
palacios/src/devices/lnx_virtio_nic.c

index f68d3df..0f76641 100644 (file)
@@ -280,16 +280,31 @@ static int send_pkt_to_guest(struct virtio_net_state * virtio, uchar_t * buf, ui
        //copy header to the header descriptor
        memcpy((void *)hdr_addr, &hdr, sizeof(struct virtio_net_hdr));
 
+       //Zheng 01/02/2010: zero payload
+       if (offset >= data_len) {
+           hdr_desc->flags &= ~VIRTIO_NEXT_FLAG;
+       }
+
        //copy data to the next descriptors
-       for (buf_idx = 0; offset < data_len; buf_idx = q->desc[hdr_idx].next) {
+       //Zheng 01/02/2010: put data into the next descriptor, rather than 0! 
+       for (buf_idx = hdr_desc->next; offset < data_len; buf_idx = q->desc[hdr_idx].next) {
+       //      for (buf_idx = 0; offset < data_len; buf_idx = q->desc[hdr_idx].next) {
            struct vring_desc * buf_desc = &(q->desc[buf_idx]);
            uint32_t len = 0;
 
-           buf_desc->flags = VIRTIO_NEXT_FLAG;
+           //Zheng 01/02/2010: commented this - we need to check 
+           //       if there still is some data left
+           //buf_desc->flags = VIRTIO_NEXT_FLAG;
         
            len = copy_data_to_desc(virtio, buf_desc, buf + offset, data_len - offset);
            
            offset += len;
+
+           //Zheng 01/02/2010: check if there still is some data left 
+           if (offset < data_len) {
+               buf_desc->flags = VIRTIO_NEXT_FLAG;             
+           }
+
            buf_desc->length = len;  // TODO: do we need this?
        }