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ipv6: make ipv6_anycast_destination logic usable without dst_entry

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nft_fib_ipv6 uses ipv6_anycast_destination(), but upcoming patch removes
the dst_entry usage in favor of fib6_result.

Move the 'plen > 127' logic to a new helper and call it from the
existing one.

Signed-off-by: Florian Westphal <fw@strlen.de>
This commit is contained in:
Florian Westphal
2026-02-24 21:09:31 +01:00
parent 7a135bf990
commit 831fb31b76
1 changed files with 11 additions and 4 deletions
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15
include/net/ip6_route.h
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@@ -252,15 +252,22 @@ static inline bool ipv6_unicast_destination(const struct sk_buff *skb)
return rt->rt6i_flags & RTF_LOCAL;
}
static inline bool __ipv6_anycast_destination(const struct rt6key *rt6i_dst,
u32 rt6i_flags,
const struct in6_addr *daddr)
{
return rt6i_flags & RTF_ANYCAST ||
(rt6i_dst->plen < 127 &&
!(rt6i_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) &&
ipv6_addr_equal(&rt6i_dst->addr, daddr));
}
static inline bool ipv6_anycast_destination(const struct dst_entry *dst,
const struct in6_addr *daddr)
{
const struct rt6_info *rt = dst_rt6_info(dst);
return rt->rt6i_flags & RTF_ANYCAST ||
(rt->rt6i_dst.plen < 127 &&
!(rt->rt6i_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) &&
ipv6_addr_equal(&rt->rt6i_dst.addr, daddr));
return __ipv6_anycast_destination(&rt->rt6i_dst, rt->rt6i_flags, daddr);
}
int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,