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net: Preserve netfilter attributes in skb_gso_segment using __copy_skb_header 

skb_gso_segment didn't preserve some attributes in the original skb
such as the netfilter fields.  This was harmless until they were used
which is the case for packets going through lo.

This patch makes it call __copy_skb_header which also picks up some
other missing attributes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2008-08-15 14:55:02 -07:00 committed by David S. Miller
parent 7447ef63cf
commit 6f85a124d8
1 changed files with 2 additions and 10 deletions
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12
net/core/skbuff.c
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@ -2256,14 +2256,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
segs = nskb;
tail = nskb;
nskb->dev = skb->dev;
skb_copy_queue_mapping(nskb, skb);
nskb->priority = skb->priority;
nskb->protocol = skb->protocol;
nskb->vlan_tci = skb->vlan_tci;
nskb->dst = dst_clone(skb->dst);
memcpy(nskb->cb, skb->cb, sizeof(skb->cb));
nskb->pkt_type = skb->pkt_type;
__copy_skb_header(nskb, skb);
nskb->mac_len = skb->mac_len;
skb_reserve(nskb, headroom);
@ -2274,6 +2267,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
skb_copy_from_linear_data(skb, skb_put(nskb, doffset),
doffset);
if (!sg) {
nskb->ip_summed = CHECKSUM_NONE;
nskb->csum = skb_copy_and_csum_bits(skb, offset,
skb_put(nskb, len),
len, 0);
@ -2283,8 +2277,6 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
frag = skb_shinfo(nskb)->frags;
k = 0;
nskb->ip_summed = CHECKSUM_PARTIAL;
nskb->csum = skb->csum;
skb_copy_from_linear_data_offset(skb, offset,
skb_put(nskb, hsize), hsize);