From 0527168522c25121bdd5d5f1d3c5b484d972ea14 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 2 May 2008 21:50:45 -0500 Subject: [PATCH] virtio: fix scatterlist sizing in net driver. Herbert Xu points out (within another patch) that my scatterlists are too short: one entry for the gso header, one for the skb->data, and MAX_SKB_FRAGS for all the fragments. Fix both xmit and recv sides (recv currently unused, coming in later patch). Signed-off-by: Rusty Russell --- drivers/net/virtio_net.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 1fd43e461b..fc7eeaa1f1 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -142,10 +142,10 @@ drop: static void try_fill_recv(struct virtnet_info *vi) { struct sk_buff *skb; - struct scatterlist sg[1+MAX_SKB_FRAGS]; + struct scatterlist sg[2+MAX_SKB_FRAGS]; int num, err; - sg_init_table(sg, 1+MAX_SKB_FRAGS); + sg_init_table(sg, 2+MAX_SKB_FRAGS); for (;;) { skb = netdev_alloc_skb(vi->dev, MAX_PACKET_LEN); if (unlikely(!skb)) @@ -231,11 +231,11 @@ static int start_xmit(struct sk_buff *skb, struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); int num, err; - struct scatterlist sg[1+MAX_SKB_FRAGS]; + struct scatterlist sg[2+MAX_SKB_FRAGS]; struct virtio_net_hdr *hdr; const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest; - sg_init_table(sg, 1+MAX_SKB_FRAGS); + sg_init_table(sg, 2+MAX_SKB_FRAGS); pr_debug("%s: xmit %p " MAC_FMT "\n", dev->name, skb, dest[0], dest[1], dest[2], -- 2.39.5