Commit 4b727361 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

virtio_net: fix truesize underestimation

We must account in skb->truesize, the size of the fragments, not the
used part of them.

Doing this work is important to avoid unexpected OOM situations.
Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: "Michael S. Tsirkin" <mst@redhat.com>
CC: virtualization@lists.linux-foundation.org
CC: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e1ac50f6
...@@ -150,6 +150,7 @@ static void set_skb_frag(struct sk_buff *skb, struct page *page, ...@@ -150,6 +150,7 @@ static void set_skb_frag(struct sk_buff *skb, struct page *page,
skb->data_len += size; skb->data_len += size;
skb->len += size; skb->len += size;
skb->truesize += PAGE_SIZE;
skb_shinfo(skb)->nr_frags++; skb_shinfo(skb)->nr_frags++;
*len -= size; *len -= size;
} }
...@@ -287,7 +288,6 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len) ...@@ -287,7 +288,6 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len)
} }
hdr = skb_vnet_hdr(skb); hdr = skb_vnet_hdr(skb);
skb->truesize += skb->data_len;
u64_stats_update_begin(&stats->syncp); u64_stats_update_begin(&stats->syncp);
stats->rx_bytes += skb->len; stats->rx_bytes += skb->len;
......
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