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vxlan: fix sparse warnings

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Sparse reports false positives for the header manipulation inlines. Annotate
them correctly.

Tested by sparse on a little endian and big endian machine.

Fixes: 54bfd872bf ("vxlan: keep flags and vni in network byte order")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2016-03-21 17:39:18 +01:00 committed by David S. Miller
parent ed49e65037
commit 5692d7ea41
1 changed files with 8 additions and 8 deletions
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16
include/net/vxlan.h
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@ -271,36 +271,36 @@ static inline struct vxlanhdr *vxlan_hdr(struct sk_buff *skb)
static inline __be32 vxlan_vni(__be32 vni_field)
{
#if defined(__BIG_ENDIAN)
return vni_field >> 8;
return (__force __be32)((__force u32)vni_field >> 8);
#else
return (vni_field & VXLAN_VNI_MASK) << 8;
return (__force __be32)((__force u32)(vni_field & VXLAN_VNI_MASK) << 8);
#endif
}
static inline __be32 vxlan_vni_field(__be32 vni)
{
#if defined(__BIG_ENDIAN)
return vni << 8;
return (__force __be32)((__force u32)vni << 8);
#else
return vni >> 8;
return (__force __be32)((__force u32)vni >> 8);
#endif
}
static inline __be32 vxlan_tun_id_to_vni(__be64 tun_id)
{
#if defined(__BIG_ENDIAN)
return tun_id;
return (__force __be32)tun_id;
#else
return tun_id >> 32;
return (__force __be32)((__force u64)tun_id >> 32);
#endif
}
static inline __be64 vxlan_vni_to_tun_id(__be32 vni)
{
#if defined(__BIG_ENDIAN)
return (__be64)vni;
return (__force __be64)vni;
#else
return (__be64)vni << 32;
return (__force __be64)((u64)(__force u32)vni << 32);
#endif
}