Ingo Molnar wrote:
randconfig testing found the following build failure on latest -git:
net/built-in.o: In function `ip_queue_init':
ip_queue.c:(.init.text+0x322c): undefined reference to `net_ipv4_ctl_path'
config attached.
Thanks, the reason is CONFIG_SYSCTL=n. I've queued this patch
(might not apply to Linus' tree due to local changes) to fix
the build error and a runtime error with CONFIG_PROC_FS=n.
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index 5109839..6bda110 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -512,6 +512,7 @@ static struct notifier_block ipq_nl_notifier = {
.notifier_call = ipq_rcv_nl_event,
};
+#ifdef CONFIG_SYSCTL
static struct ctl_table_header *ipq_sysctl_header;
static ctl_table ipq_table[] = {
@@ -525,7 +526,9 @@ static ctl_table ipq_table[] = {
},
{ .ctl_name = 0 }
};
+#endif
+#ifdef CONFIG_PROC_FS
static int ip_queue_show(struct seq_file *m, void *v)
{
read_lock_bh(&queue_lock);
@@ -562,6 +565,7 @@ static const struct file_operations ip_queue_proc_fops = {
.release = single_release,
.owner = THIS_MODULE,
};
+#endif
static const struct nf_queue_handler nfqh = {
.name = "ip_queue",
@@ -571,7 +575,7 @@ static const struct nf_queue_handler nfqh = {
static int __init ip_queue_init(void)
{
int status = -ENOMEM;
- struct proc_dir_entry *proc;
+ struct proc_dir_entry *proc __maybe_unused;
netlink_register_notifier(&ipq_nl_notifier);
ipqnl = netlink_kernel_create(&init_net, NETLINK_FIREWALL, 0,
@@ -581,6 +585,7 @@ static int __init ip_queue_init(void)
goto cleanup_netlink_notifier;
}
+#ifdef CONFIG_PROC_FS
proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
if (proc) {
proc->owner = THIS_MODULE;
@@ -589,10 +594,11 @@ static int __init ip_queue_init(void)
printk(KERN_ERR "ip_queue: failed to create proc entry\n");
goto cleanup_ipqnl;
}
-
+#endif
register_netdevice_notifier(&ipq_dev_notifier);
+#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_sysctl_paths(net_ipv4_ctl_path, ipq_table);
-
+#endif
status = nf_register_queue_handler(PF_INET, &nfqh);
if (status < 0) {
printk(KERN_ERR "ip_queue: failed to register queue handler\n");
@@ -601,10 +607,12 @@ static int __init ip_queue_init(void)
return status;
cleanup_sysctl:
+#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
+#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
-cleanup_ipqnl:
+cleanup_ipqnl: __maybe_unused
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
@@ -620,7 +628,9 @@ static void __exit ip_queue_fini(void)
synchronize_net();
ipq_flush(NULL, 0);
+#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
+#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 56b4ea6..e869916 100644
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -515,6 +515,7 @@ static struct notifier_block ipq_nl_notifier = {
.notifier_call = ipq_rcv_nl_event,
};
+#ifdef CONFIG_SYSCTL
static struct ctl_table_header *ipq_sysctl_header;
static ctl_table ipq_table[] = {
@@ -528,7 +529,9 @@ static ctl_table ipq_table[] = {
},
{ .ctl_name = 0 }
};
+#endif
+#ifdef CONFIG_PROC_FS
static int ip6_queue_show(struct seq_file *m, void *v)
{
read_lock_bh(&queue_lock);
@@ -565,6 +568,7 @@ static const struct file_operations ip6_queue_proc_fops = {
.release = single_release,
.owner = THIS_MODULE,
};
+#endif
static const struct nf_queue_handler nfqh = {
.name = "ip6_queue",
@@ -574,7 +578,7 @@ static const struct nf_queue_handler nfqh = {
static int __init ip6_queue_init(void)
{
int status = -ENOMEM;
- struct proc_dir_entry *proc;
+ struct proc_dir_entry *proc __maybe_unused;
netlink_register_notifier(&ipq_nl_notifier);
ipqnl = netlink_kernel_create(&init_net, NETLINK_IP6_FW, 0,
@@ -584,6 +588,7 @@ static int __init ip6_queue_init(void)
goto cleanup_netlink_notifier;
}
+#ifdef CONFIG_PROC_FS
proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
if (proc) {
proc->owner = THIS_MODULE;
@@ -592,10 +597,11 @@ static int __init ip6_queue_init(void)
printk(KERN_ERR "ip6_queue: failed to create proc entry\n");
goto cleanup_ipqnl;
}
-
+#endif
register_netdevice_notifier(&ipq_dev_notifier);
+#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_sysctl_paths(net_ipv6_ctl_path, ipq_table);
-
+#endif
status = nf_register_queue_handler(PF_INET6, &nfqh);
if (status < 0) {
printk(KERN_ERR "ip6_queue: failed to register queue
handler\n");
@@ -604,11 +610,13 @@ static int __init ip6_queue_init(void)
return status;
cleanup_sysctl:
+#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
+#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
-cleanup_ipqnl:
+cleanup_ipqnl: __maybe_unused
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
@@ -624,7 +632,9 @@ static void __exit ip6_queue_fini(void)
synchronize_net();
ipq_flush(NULL, 0);
+#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
+#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
