diff mbox series

[2/6] backports: fix genlmsg_nlhdr() backport

Message ID 20181002175107.16336-2-johannes@sipsolutions.net (mailing list archive)
State Changes Requested
Headers show
Series [1/6] backports: rename magic functions for netlink parsing | expand

Commit Message

Johannes Berg Oct. 2, 2018, 5:51 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

Since 4.15 this no longer takes a family argument, so add that
to the backports instead of trying to work around the family
argument having changed type.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 backport/backport-include/net/genetlink.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
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Patch

diff --git a/backport/backport-include/net/genetlink.h b/backport/backport-include/net/genetlink.h
index dfbacbf40723..d80d979ac423 100644
--- a/backport/backport-include/net/genetlink.h
+++ b/backport/backport-include/net/genetlink.h
@@ -60,6 +60,14 @@  static inline void *genl_info_userhdr(struct genl_info *info)
 #endif
 
 #if LINUX_VERSION_IS_LESS(4,15,0)
+#define genlmsg_nlhdr LINUX_BACKPORT(genlmsg_nlhdr)
+static inline struct nlmsghdr *genlmsg_nlhdr(void *user_hdr)
+{
+	return (struct nlmsghdr *)((char *)user_hdr -
+				   GENL_HDRLEN -
+				   NLMSG_HDRLEN);
+}
+
 #ifndef genl_dump_check_consistent
 static inline
 void backport_genl_dump_check_consistent(struct netlink_callback *cb,
@@ -153,8 +161,6 @@  extern void genl_notify(struct sk_buff *skb, struct net *net, u32 pid,
 		    (_fam)->mcgrps[_group].id, _info->nlhdr, _flags)
 #define genlmsg_put(_skb, _pid, _seq, _fam, _flags, _cmd)		\
 	genlmsg_put(_skb, _pid, _seq, &(_fam)->family, _flags, _cmd)
-#define genlmsg_nlhdr(_hdr, _fam)					\
-	genlmsg_nlhdr(_hdr, &(_fam)->family)
 
 #ifndef genlmsg_put_reply /* might already be there from _info override above */
 #define genlmsg_put_reply(_skb, _info, _fam, _flags, _cmd)		\