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net/ip_tunnels: Introduce tunnel_id_to_key32() and key32_to_tunnel_id()

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Add utility functions to convert a 32 bits key into a 64 bits tunnel and
vice versa.
These functions will be used instead of cloning code in GRE and VXLAN,
and in tc act_iptunnel which will be introduced in a following patch in
this patchset.

Signed-off-by: Amir Vadai <amir@vadai.me>
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai
2016-09-08 16:23:45 +03:00
committed by David S. Miller
parent e808bb6ed0
commit d817f432c2
4 changed files with 23 additions and 41 deletions
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18
include/net/vxlan.h
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@@ -350,24 +350,6 @@ static inline __be32 vxlan_vni_field(__be32 vni)
#endif
}
static inline __be32 vxlan_tun_id_to_vni(__be64 tun_id)
{
#if defined(__BIG_ENDIAN)
return (__force __be32)tun_id;
#else
return (__force __be32)((__force u64)tun_id >> 32);
#endif
}
static inline __be64 vxlan_vni_to_tun_id(__be32 vni)
{
#if defined(__BIG_ENDIAN)
return (__force __be64)vni;
#else
return (__force __be64)((u64)(__force u32)vni << 32);
#endif
}
static inline size_t vxlan_rco_start(__be32 vni_field)
{
return be32_to_cpu(vni_field & VXLAN_RCO_MASK) << VXLAN_RCO_SHIFT;