[v3,2/3] backports: update backport/backport-include/net/netlink.h
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Message ID 20190327030044.28263-3-acelan.kao@canonical.com
State New
Headers show
Series
  • backports: to make iwlwifi backported from v5.1-rc1 can be compiled
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Commit Message

AceLan Kao March 27, 2019, 3 a.m. UTC
Add new macros introduced from v5.1-rc1
   23323289b154 netlink: reduce NLA_POLICY_NESTED{,_ARRAY} arguments

v3: Fix v4.20 compilation error

Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
---
 backport/backport-include/net/netlink.h | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

Patch
diff mbox series

diff --git a/backport/backport-include/net/netlink.h b/backport/backport-include/net/netlink.h
index 4af73631..d8237f10 100644
--- a/backport/backport-include/net/netlink.h
+++ b/backport/backport-include/net/netlink.h
@@ -4,6 +4,19 @@ 
 #include <linux/version.h>
 #include <linux/in6.h>
 
+#if LINUX_VERSION_IS_LESS(5,1,0)
+#undef NLA_POLICY_NESTED
+#undef NLA_POLICY_NESTED_ARRAY
+#define _NLA_POLICY_NESTED(maxattr, policy) \
+	{ .type = NLA_NESTED, .validation_data = policy, .len = maxattr }
+#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)
+#endif /* < 5.1 */
+
 #if LINUX_VERSION_IS_LESS(4,20,0)
 /* can't backport using the enum - need to override */
 #define NLA_UNSPEC		0
@@ -59,11 +72,6 @@  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) \
-	{ .type = NLA_NESTED, .validation_data = policy, .len = maxattr }
-#define NLA_POLICY_NESTED_ARRAY(maxattr, policy) \
-	{ .type = NLA_NESTED_ARRAY, .validation_data = policy, .len = maxattr }
-
 #define __NLA_ENSURE(condition) (sizeof(char[1 - 2*!(condition)]) - 1)
 #define NLA_ENSURE_INT_TYPE(tp)				\
 	(__NLA_ENSURE(tp == NLA_S8 || tp == NLA_U8 ||	\