genetlink: simplify genl_notify

The genl_notify function has too many arguments for no real reason - all
callers use genl_info to get them anyway. Just pass the genl_info down to
genl_notify.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/mac80211_hwsim.c

@@ -2190,9 +2190,8 @@ static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
 				   struct genl_info *info)
 {
 	if (info)
-		genl_notify(&hwsim_genl_family, mcast_skb,
-			    genl_info_net(info), info->snd_portid,
-			    HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
+		genl_notify(&hwsim_genl_family, mcast_skb, info,
+			    HWSIM_MCGRP_CONFIG, GFP_KERNEL);
 	else
 		genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
 				  HWSIM_MCGRP_CONFIG, GFP_KERNEL);

include/net/genetlink.h

@@ -183,9 +183,8 @@ _genl_register_family_with_ops_grps(struct genl_family *family,
 					    (grps), ARRAY_SIZE(grps))
 
 int genl_unregister_family(struct genl_family *family);
-void genl_notify(struct genl_family *family,
-		 struct sk_buff *skb, struct net *net, u32 portid,
-		 u32 group, struct nlmsghdr *nlh, gfp_t flags);
+void genl_notify(struct genl_family *family, struct sk_buff *skb,
+		 struct genl_info *info, u32 group, gfp_t flags);
 
 struct sk_buff *genlmsg_new_unicast(size_t payload, struct genl_info *info,
 				    gfp_t flags);

net/netlink/genetlink.c

@@ -1136,19 +1136,19 @@ int genlmsg_multicast_allns(struct genl_family *family, struct sk_buff *skb,
 }
 EXPORT_SYMBOL(genlmsg_multicast_allns);
 
-void genl_notify(struct genl_family *family,
-		 struct sk_buff *skb, struct net *net, u32 portid, u32 group,
-		 struct nlmsghdr *nlh, gfp_t flags)
+void genl_notify(struct genl_family *family, struct sk_buff *skb,
+		 struct genl_info *info, u32 group, gfp_t flags)
 {
+	struct net *net = genl_info_net(info);
 	struct sock *sk = net->genl_sock;
 	int report = 0;
 
-	if (nlh)
-		report = nlmsg_report(nlh);
+	if (info->nlhdr)
+		report = nlmsg_report(info->nlhdr);
 
 	if (WARN_ON_ONCE(group >= family->n_mcgrps))
 		return;
 	group = family->mcgrp_offset + group;
-	nlmsg_notify(sk, skb, portid, group, report, flags);
+	nlmsg_notify(sk, skb, info->snd_portid, group, report, flags);
 }
 EXPORT_SYMBOL(genl_notify);

net/openvswitch/datapath.c

@@ -91,8 +91,7 @@ static bool ovs_must_notify(struct genl_family *family, struct genl_info *info,
 static void ovs_notify(struct genl_family *family,
 		       struct sk_buff *skb, struct genl_info *info)
 {
-	genl_notify(family, skb, genl_info_net(info), info->snd_portid,
-		    0, info->nlhdr, GFP_KERNEL);
+	genl_notify(family, skb, info, 0, GFP_KERNEL);
 }
 
 /**