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net: ipv6: Introduce ip6_multipath_hash_policy()

Browse source 
In order to abstract away access to the
ipv6.sysctl.multipath_hash_policy variable, which is not available on
systems compiled without IPv6 support, introduce a wrapper function
ip6_multipath_hash_policy() that falls back to 0 on non-IPv6 systems.

Use this wrapper from mlxsw/spectrum_router instead of a direct
reference.

Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Acked-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Petr Machata 2018-03-11 09:45:47 +02:00 • committed by David S. Miller
commit 918ee5073b
2 changed files with 12 additions and 1 deletions
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11
include/net/ipv6.h
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@ -888,6 +888,17 @@ static inline int ip6_default_np_autolabel(struct net *net)
}
#endif
#if IS_ENABLED(CONFIG_IPV6)
static inline int ip6_multipath_hash_policy(const struct net *net)
{
return net->ipv6.sysctl.multipath_hash_policy;
}
#else
static inline int ip6_multipath_hash_policy(const struct net *net)
{
return 0;
}
#endif
/*
* Header manipulation