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path: root/drivers/net/virtio_net.c
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Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9b6a4a875c55..78a01c71a17c 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -401,18 +401,13 @@ static struct sk_buff *page_to_skb(struct virtnet_info *vi,
/* If headroom is not 0, there is an offset between the beginning of the
* data and the allocated space, otherwise the data and the allocated
* space are aligned.
+ *
+ * Buffers with headroom use PAGE_SIZE as alloc size, see
+ * add_recvbuf_mergeable() + get_mergeable_buf_len()
*/
- if (headroom) {
- /* Buffers with headroom use PAGE_SIZE as alloc size,
- * see add_recvbuf_mergeable() + get_mergeable_buf_len()
- */
- truesize = PAGE_SIZE;
- tailroom = truesize - len - offset;
- buf = page_address(page);
- } else {
- tailroom = truesize - len;
- buf = p;
- }
+ truesize = headroom ? PAGE_SIZE : truesize;
+ tailroom = truesize - len - headroom - (hdr_padded_len - hdr_len);
+ buf = p - headroom;
len -= hdr_len;
offset += hdr_padded_len;
@@ -958,7 +953,8 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
put_page(page);
head_skb = page_to_skb(vi, rq, xdp_page, offset,
len, PAGE_SIZE, false,
- metasize, headroom);
+ metasize,
+ VIRTIO_XDP_HEADROOM);
return head_skb;
}
break;