fix: detect modularized CONFIG_BRIDGE_NETFILTER

gnought · gnought · commit 7f0de0ec5a50 · 2023-04-30T15:29:09.000+08:00
diff --git a/compat.h b/compat.h
@@ -692,7 +692,7 @@ static inline int is_vlan_dev(struct net_device *dev)
 }
 #endif
 
-#ifdef CONFIG_BRIDGE_NETFILTER
+#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
 # ifndef HAVE_NF_BRIDGE_INFO_GET
 static inline struct nf_bridge_info *
 nf_bridge_info_get(const struct sk_buff *skb)
diff --git a/gen_compat_def b/gen_compat_def
@@ -116,7 +116,7 @@ kbuild_test_struct timeval linux/ktime.h
 kbuild_test_struct proc_ops linux/proc_fs.h
 # No since v5.1, but present in CentOS-8's 4.18.0-227
 kbuild_test_symbol synchronize_sched linux/rcupdate.h
-# Fails on 3.10.0-957.10.1.el7.x86_64
+# No since 5, but present in include/net/netfilter/br_netfilter.h >= linux v4.2 and < 5 (non-backports)
 kbuild_test_symbol nf_bridge_info_get linux/netfilter_bridge.h
 # Stumbled on 5.9
 kbuild_test_struct vlan_dev_priv linux/if_vlan.h

Original file line number	Diff line number	Diff line change
`@@ -692,7 +692,7 @@ static inline int is_vlan_dev(struct net_device *dev)`
`692`	`692`	`}`
`693`	`693`	`#endif`
`694`	`694`
`695`		`-#ifdef CONFIG_BRIDGE_NETFILTER`
	`695`	`+#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)`
`696`	`696`	`# ifndef HAVE_NF_BRIDGE_INFO_GET`
`697`	`697`	`static inline struct nf_bridge_info *`
`698`	`698`	`nf_bridge_info_get(const struct sk_buff *skb)`