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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: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2020-10-05 15:07:37 -07:00 committed by David S. Miller
parent 329d9c333e
commit ddcf3b70c5
1 changed files with 9 additions and 8 deletions
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17
include/net/netlink.h
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@ -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) \