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net: ipv6: remove unused code in ipv6_find_hdr()

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Storing the left length of skb into 'len' actually has no effect
so we can remove it.

Signed-off-by: Lin Zhang <xiaolou4617@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lin Zhang 2017-10-06 02:07:08 +08:00 committed by David S. Miller
parent d433b3f3e8
commit 380537b4f7
1 changed files with 0 additions and 3 deletions
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3
net/ipv6/exthdrs_core.c
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@ -187,7 +187,6 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
{ {
unsigned int start = skb_network_offset(skb) + sizeof(struct ipv6hdr); unsigned int start = skb_network_offset(skb) + sizeof(struct ipv6hdr);
u8 nexthdr = ipv6_hdr(skb)->nexthdr; u8 nexthdr = ipv6_hdr(skb)->nexthdr;
unsigned int len;
bool found; bool found;
if (fragoff) if (fragoff)
@ -204,7 +203,6 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
start = *offset + sizeof(struct ipv6hdr); start = *offset + sizeof(struct ipv6hdr);
nexthdr = ip6->nexthdr; nexthdr = ip6->nexthdr;
} }
len = skb->len - start;
do { do {
struct ipv6_opt_hdr _hdr, *hp; struct ipv6_opt_hdr _hdr, *hp;
@ -273,7 +271,6 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
if (!found) { if (!found) {
nexthdr = hp->nexthdr; nexthdr = hp->nexthdr;
len -= hdrlen;
start += hdrlen; start += hdrlen;
} }
} while (!found); } while (!found);