[PATCH 2/2] backports: update backport/backport-include/net/netlink.h

AceLan Kao <[email protected]>
Newsgroups org.kernel.vger.backports
Message-ID <[email protected]>
Add new macros introduced from
   23323289b154 netlink: reduce NLA_POLICY_NESTED{,_ARRAY} arguments

Signed-off-by: AceLan Kao <[email protected]>
---
 backport/backport-include/net/netlink.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/backport/backport-include/net/netlink.h b/backport/backport-include/net/netlink.h
index 4af73631..6f6630ae 100644
--- a/backport/backport-include/net/netlink.h
+++ b/backport/backport-include/net/netlink.h
@@ -59,10 +59,14 @@ struct backport_nla_policy {
 #define NLA_POLICY_ETH_ADDR		NLA_POLICY_EXACT_LEN(ETH_ALEN)
 #define NLA_POLICY_ETH_ADDR_COMPAT	NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN)
 
-#define NLA_POLICY_NESTED(maxattr, policy) \
+#define _NLA_POLICY_NESTED(maxattr, policy) \
 	{ .type = NLA_NESTED, .validation_data = policy, .len = maxattr }
-#define NLA_POLICY_NESTED_ARRAY(maxattr, policy) \
+#define _NLA_POLICY_NESTED_ARRAY(maxattr, policy) \
 	{ .type = NLA_NESTED_ARRAY, .validation_data = policy, .len = maxattr }
+#define NLA_POLICY_NESTED(policy) \
+	_NLA_POLICY_NESTED(ARRAY_SIZE(policy) - 1, policy)
+#define NLA_POLICY_NESTED_ARRAY(policy) \
+	_NLA_POLICY_NESTED_ARRAY(ARRAY_SIZE(policy) - 1, policy)
 
 #define __NLA_ENSURE(condition) (sizeof(char[1 - 2*!(condition)]) - 1)
 #define NLA_ENSURE_INT_TYPE(tp)				\
-- 
2.17.1

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