[PATCH] netfilter: nfnl_acct: remove data from struct net

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This patch removes nfnl_acct_list from struct net, making it possible to
compile the nfacct module out of tree.

Signed-off-by: Miao Wang <shankerwangmiao@xxxxxxxxx>
---
 include/net/net_namespace.h    |  3 ---
 net/netfilter/nfnetlink_acct.c | 38 ++++++++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 12 deletions(-)

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 22bc07f4b043..dc20a47e3828 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -151,9 +151,6 @@ struct net {
 #endif
 	struct sock		*nfnl;
 	struct sock		*nfnl_stash;
-#if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT)
-	struct list_head        nfnl_acct_list;
-#endif
 #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
 	struct list_head	nfct_timeout_list;
 #endif
diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c
index 5bfec829c12f..ae56756fab46 100644
--- a/net/netfilter/nfnetlink_acct.c
+++ b/net/netfilter/nfnetlink_acct.c
@@ -16,6 +16,7 @@
 #include <linux/errno.h>
 #include <net/netlink.h>
 #include <net/sock.h>
+#include <net/netns/generic.h>
 
 #include <linux/netfilter.h>
 #include <linux/netfilter/nfnetlink.h>
@@ -41,6 +42,17 @@ struct nfacct_filter {
 	u32 mask;
 };
 
+struct nfnl_acct_net {
+	struct list_head        nfnl_acct_list;
+};
+
+static unsigned int nfnl_acct_net_id __read_mostly;
+
+static inline struct nfnl_acct_net *nfnl_acct_pernet(struct net *net)
+{
+	return net_generic(net, nfnl_acct_net_id);
+}
+
 #define NFACCT_F_QUOTA (NFACCT_F_QUOTA_PKTS | NFACCT_F_QUOTA_BYTES)
 #define NFACCT_OVERQUOTA_BIT	2	/* NFACCT_F_OVERQUOTA */
 
@@ -53,6 +65,7 @@ static int nfnl_acct_new(struct net *net, struct sock *nfnl,
 	char *acct_name;
 	unsigned int size = 0;
 	u32 flags = 0;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
 	if (!tb[NFACCT_NAME])
 		return -EINVAL;
@@ -61,7 +74,7 @@ static int nfnl_acct_new(struct net *net, struct sock *nfnl,
 	if (strlen(acct_name) == 0)
 		return -EINVAL;
 
-	list_for_each_entry(nfacct, &net->nfnl_acct_list, head) {
+	list_for_each_entry(nfacct, &nfnl_acct_net->nfnl_acct_list, head) {
 		if (strncmp(nfacct->name, acct_name, NFACCT_NAME_MAX) != 0)
 			continue;
 
@@ -123,7 +136,7 @@ static int nfnl_acct_new(struct net *net, struct sock *nfnl,
 			     be64_to_cpu(nla_get_be64(tb[NFACCT_PKTS])));
 	}
 	refcount_set(&nfacct->refcnt, 1);
-	list_add_tail_rcu(&nfacct->head, &net->nfnl_acct_list);
+	list_add_tail_rcu(&nfacct->head, &nfnl_acct_net->nfnl_acct_list);
 	return 0;
 }
 
@@ -190,6 +203,7 @@ nfnl_acct_dump(struct sk_buff *skb, struct netlink_callback *cb)
 	struct net *net = sock_net(skb->sk);
 	struct nf_acct *cur, *last;
 	const struct nfacct_filter *filter = cb->data;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
 	if (cb->args[2])
 		return 0;
@@ -199,7 +213,7 @@ nfnl_acct_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		cb->args[1] = 0;
 
 	rcu_read_lock();
-	list_for_each_entry_rcu(cur, &net->nfnl_acct_list, head) {
+	list_for_each_entry_rcu(cur, &nfnl_acct_net->nfnl_acct_list, head) {
 		if (last) {
 			if (cur != last)
 				continue;
@@ -272,6 +286,7 @@ static int nfnl_acct_get(struct net *net, struct sock *nfnl,
 	int ret = -ENOENT;
 	struct nf_acct *cur;
 	char *acct_name;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
 	if (nlh->nlmsg_flags & NLM_F_DUMP) {
 		struct netlink_dump_control c = {
@@ -288,7 +303,7 @@ static int nfnl_acct_get(struct net *net, struct sock *nfnl,
 		return -EINVAL;
 	acct_name = nla_data(tb[NFACCT_NAME]);
 
-	list_for_each_entry(cur, &net->nfnl_acct_list, head) {
+	list_for_each_entry(cur, &nfnl_acct_net->nfnl_acct_list, head) {
 		struct sk_buff *skb2;
 
 		if (strncmp(cur->name, acct_name, NFACCT_NAME_MAX)!= 0)
@@ -345,16 +360,17 @@ static int nfnl_acct_del(struct net *net, struct sock *nfnl,
 	struct nf_acct *cur, *tmp;
 	int ret = -ENOENT;
 	char *acct_name;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
 	if (!tb[NFACCT_NAME]) {
-		list_for_each_entry_safe(cur, tmp, &net->nfnl_acct_list, head)
+		list_for_each_entry_safe(cur, tmp, &nfnl_acct_net->nfnl_acct_list, head)
 			nfnl_acct_try_del(cur);
 
 		return 0;
 	}
 	acct_name = nla_data(tb[NFACCT_NAME]);
 
-	list_for_each_entry(cur, &net->nfnl_acct_list, head) {
+	list_for_each_entry(cur, &nfnl_acct_net->nfnl_acct_list, head) {
 		if (strncmp(cur->name, acct_name, NFACCT_NAME_MAX) != 0)
 			continue;
 
@@ -403,9 +419,10 @@ MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_ACCT);
 struct nf_acct *nfnl_acct_find_get(struct net *net, const char *acct_name)
 {
 	struct nf_acct *cur, *acct = NULL;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
 	rcu_read_lock();
-	list_for_each_entry_rcu(cur, &net->nfnl_acct_list, head) {
+	list_for_each_entry_rcu(cur, &nfnl_acct_net->nfnl_acct_list, head) {
 		if (strncmp(cur->name, acct_name, NFACCT_NAME_MAX)!= 0)
 			continue;
 
@@ -488,7 +505,7 @@ EXPORT_SYMBOL_GPL(nfnl_acct_overquota);
 
 static int __net_init nfnl_acct_net_init(struct net *net)
 {
-	INIT_LIST_HEAD(&net->nfnl_acct_list);
+	INIT_LIST_HEAD(&nfnl_acct_pernet(net)->nfnl_acct_list);
 
 	return 0;
 }
@@ -496,8 +513,9 @@ static int __net_init nfnl_acct_net_init(struct net *net)
 static void __net_exit nfnl_acct_net_exit(struct net *net)
 {
 	struct nf_acct *cur, *tmp;
+	struct nfnl_acct_net *nfnl_acct_net = nfnl_acct_pernet(net);
 
-	list_for_each_entry_safe(cur, tmp, &net->nfnl_acct_list, head) {
+	list_for_each_entry_safe(cur, tmp, &nfnl_acct_net->nfnl_acct_list, head) {
 		list_del_rcu(&cur->head);
 
 		if (refcount_dec_and_test(&cur->refcnt))
@@ -508,6 +526,8 @@ static void __net_exit nfnl_acct_net_exit(struct net *net)
 static struct pernet_operations nfnl_acct_ops = {
         .init   = nfnl_acct_net_init,
         .exit   = nfnl_acct_net_exit,
+	.id     = &nfnl_acct_net_id,
+	.size   = sizeof(struct nfnl_acct_net),
 };
 
 static int __init nfnl_acct_init(void)
-- 
2.20.1






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