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net: ipv6: Introduce ip6_multipath_hash_policy()

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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 <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
2018-03-11 09:45:47 +02:00
committed by David S. Miller
parent 129cf5f7f1
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