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ipv6: fix sparse warnings in rt6_info_hash_nhsfn()

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Adding by commit 51ebd31815 which adds the support of ECMP for IPv6.

Spotted-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2012-10-22 23:35:06 +00:00 committed by David S. Miller
parent be71644673
commit b3ce5ae1fb
1 changed files with 13 additions and 13 deletions
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26
net/ipv6/route.c
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@ -397,32 +397,32 @@ static int rt6_info_hash_nhsfn(unsigned int candidate_count,
{
unsigned int val = fl6->flowi6_proto;
val ^= fl6->daddr.s6_addr32[0];
val ^= fl6->daddr.s6_addr32[1];
val ^= fl6->daddr.s6_addr32[2];
val ^= fl6->daddr.s6_addr32[3];
val ^= (__force u32)fl6->daddr.s6_addr32[0];
val ^= (__force u32)fl6->daddr.s6_addr32[1];
val ^= (__force u32)fl6->daddr.s6_addr32[2];
val ^= (__force u32)fl6->daddr.s6_addr32[3];
val ^= fl6->saddr.s6_addr32[0];
val ^= fl6->saddr.s6_addr32[1];
val ^= fl6->saddr.s6_addr32[2];
val ^= fl6->saddr.s6_addr32[3];
val ^= (__force u32)fl6->saddr.s6_addr32[0];
val ^= (__force u32)fl6->saddr.s6_addr32[1];
val ^= (__force u32)fl6->saddr.s6_addr32[2];
val ^= (__force u32)fl6->saddr.s6_addr32[3];
/* Work only if this not encapsulated */
switch (fl6->flowi6_proto) {
case IPPROTO_UDP:
case IPPROTO_TCP:
case IPPROTO_SCTP:
val ^= fl6->fl6_sport;
val ^= fl6->fl6_dport;
val ^= (__force u16)fl6->fl6_sport;
val ^= (__force u16)fl6->fl6_dport;
break;
case IPPROTO_ICMPV6:
val ^= fl6->fl6_icmp_type;
val ^= fl6->fl6_icmp_code;
val ^= (__force u16)fl6->fl6_icmp_type;
val ^= (__force u16)fl6->fl6_icmp_code;
break;
}
/* RFC6438 recommands to use flowlabel */
val ^= fl6->flowlabel;
val ^= (__force u32)fl6->flowlabel;
/* Perhaps, we need to tune, this function? */
val = val ^ (val >> 7) ^ (val >> 12);