Commit ddcf3b70 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

netlink: create helpers for checking type is an int 



There's a number of policies which check if type is a uint or sint.
Factor the checking against the list of value sizes to a helper
for easier reuse.

v2: - new patch

Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 329d9c33

include/net/netlink.h

+9 −8
Original line number Diff line number Diff line
@@ -362,20 +362,21 @@ struct nla_policy { 
#define NLA_POLICY_BITFIELD32(valid) \

	{ .type = NLA_BITFIELD32, .bitfield32_valid = valid }



#define __NLA_IS_UINT_TYPE(tp)						\

	(tp == NLA_U8 || tp == NLA_U16 || tp == NLA_U32 || tp == NLA_U64)

#define __NLA_IS_SINT_TYPE(tp)						\

	(tp == NLA_S8 || tp == NLA_S16 || tp == NLA_S32 || tp == NLA_S64)



#define __NLA_ENSURE(condition) BUILD_BUG_ON_ZERO(!(condition))

#define NLA_ENSURE_UINT_OR_BINARY_TYPE(tp)		\

	(__NLA_ENSURE(tp == NLA_U8 || tp == NLA_U16 ||	\

		      tp == NLA_U32 || tp == NLA_U64 ||	\

	(__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) ||	\

		      tp == NLA_MSECS ||		\

		      tp == NLA_BINARY) + tp)

#define NLA_ENSURE_SINT_TYPE(tp)			\

	(__NLA_ENSURE(tp == NLA_S8 || tp == NLA_S16  ||	\

		      tp == NLA_S32 || tp == NLA_S64) + tp)

	(__NLA_ENSURE(__NLA_IS_SINT_TYPE(tp)) + tp)

#define NLA_ENSURE_INT_OR_BINARY_TYPE(tp)		\

	(__NLA_ENSURE(tp == NLA_S8 || tp == NLA_U8 ||	\

		      tp == NLA_S16 || tp == NLA_U16 ||	\

		      tp == NLA_S32 || tp == NLA_U32 ||	\

		      tp == NLA_S64 || tp == NLA_U64 ||	\

	(__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) ||		\

		      __NLA_IS_SINT_TYPE(tp) ||		\

		      tp == NLA_MSECS ||		\

		      tp == NLA_BINARY) + tp)

#define NLA_ENSURE_NO_VALIDATION_PTR(tp)		\

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