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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-19 22:29:03 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:26:38 -0700
commit6b88dd966b42e374dc783c397efc15f5c1458265 (patch)
tree4876e6953c2281231be8b0ce9724f31a6e012a28 /net/ipv6
parentdc5fc579b90ed0a9a4e55b0218cdbaf0a8cf2e67 (diff)
downloadop-kernel-dev-6b88dd966b42e374dc783c397efc15f5c1458265.zip
op-kernel-dev-6b88dd966b42e374dc783c397efc15f5c1458265.tar.gz
[SK_BUFF] ipv6: Use skb_network_offset in some more places
So that we reduce the number of direct accesses to skb->data. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/netfilter/ip6_tables.c2
-rw-r--r--net/ipv6/netfilter/nf_conntrack_reasm.c5
2 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index caf9e37..b97aedc 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1448,7 +1448,7 @@ static void __exit ip6_tables_fini(void)
int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
int target, unsigned short *fragoff)
{
- unsigned int start = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
+ unsigned int start = skb_network_offset(skb) + sizeof(struct ipv6hdr);
u8 nexthdr = ipv6_hdr(skb)->nexthdr;
unsigned int len = skb->len - start;
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index b7889ce..721f02d 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -707,8 +707,9 @@ static int
find_prev_fhdr(struct sk_buff *skb, u8 *prevhdrp, int *prevhoff, int *fhoff)
{
u8 nexthdr = ipv6_hdr(skb)->nexthdr;
- u8 prev_nhoff = (u8 *)&ipv6_hdr(skb)->nexthdr - skb->data;
- int start = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
+ const int netoff = skb_network_offset(skb);
+ u8 prev_nhoff = netoff + offsetof(struct ipv6hdr, nexthdr);
+ int start = netoff + sizeof(struct ipv6hdr);
int len = skb->len - start;
u8 prevhdr = NEXTHDR_IPV6;
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