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Message-Id: <20220107040326.28038-4-fw@strlen.de>
Date: Fri, 7 Jan 2022 05:03:24 +0100
From: Florian Westphal <fw@...len.de>
To: <netfilter-devel@...r.kernel.org>
Cc: <netdev@...r.kernel.org>, Florian Westphal <fw@...len.de>
Subject: [PATCH nf-next 3/5] netfilter: make function op structures const
No functional changes, these structures should be const.
Signed-off-by: Florian Westphal <fw@...len.de>
---
include/linux/netfilter.h | 8 ++++----
net/netfilter/core.c | 10 +++++-----
net/netfilter/nf_conntrack_core.c | 4 ++--
net/netfilter/nf_conntrack_netlink.c | 4 ++--
net/netfilter/nf_nat_core.c | 2 +-
net/netfilter/nfnetlink_queue.c | 8 ++++----
6 files changed, 18 insertions(+), 18 deletions(-)
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index e0e3f3355ab1..15e71bfff726 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -381,13 +381,13 @@ struct nf_nat_hook {
enum ip_conntrack_dir dir);
};
-extern struct nf_nat_hook __rcu *nf_nat_hook;
+extern const struct nf_nat_hook __rcu *nf_nat_hook;
static inline void
nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
{
#if IS_ENABLED(CONFIG_NF_NAT)
- struct nf_nat_hook *nat_hook;
+ const struct nf_nat_hook *nat_hook;
rcu_read_lock();
nat_hook = rcu_dereference(nf_nat_hook);
@@ -464,7 +464,7 @@ struct nf_ct_hook {
const struct sk_buff *);
void (*attach)(struct sk_buff *nskb, const struct sk_buff *skb);
};
-extern struct nf_ct_hook __rcu *nf_ct_hook;
+extern const struct nf_ct_hook __rcu *nf_ct_hook;
struct nlattr;
@@ -479,7 +479,7 @@ struct nfnl_ct_hook {
void (*seq_adjust)(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo, s32 off);
};
-extern struct nfnl_ct_hook __rcu *nfnl_ct_hook;
+extern const struct nfnl_ct_hook __rcu *nfnl_ct_hook;
/**
* nf_skb_duplicated - TEE target has sent a packet
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index dc806dc9fe28..354cb472f386 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -666,14 +666,14 @@ EXPORT_SYMBOL(nf_hook_slow_list);
/* This needs to be compiled in any case to avoid dependencies between the
* nfnetlink_queue code and nf_conntrack.
*/
-struct nfnl_ct_hook __rcu *nfnl_ct_hook __read_mostly;
+const struct nfnl_ct_hook __rcu *nfnl_ct_hook __read_mostly;
EXPORT_SYMBOL_GPL(nfnl_ct_hook);
-struct nf_ct_hook __rcu *nf_ct_hook __read_mostly;
+const struct nf_ct_hook __rcu *nf_ct_hook __read_mostly;
EXPORT_SYMBOL_GPL(nf_ct_hook);
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
-struct nf_nat_hook __rcu *nf_nat_hook __read_mostly;
+const struct nf_nat_hook __rcu *nf_nat_hook __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_hook);
/* This does not belong here, but locally generated errors need it if connection
@@ -696,7 +696,7 @@ EXPORT_SYMBOL(nf_ct_attach);
void nf_conntrack_destroy(struct nf_conntrack *nfct)
{
- struct nf_ct_hook *ct_hook;
+ const struct nf_ct_hook *ct_hook;
rcu_read_lock();
ct_hook = rcu_dereference(nf_ct_hook);
@@ -709,7 +709,7 @@ EXPORT_SYMBOL(nf_conntrack_destroy);
bool nf_ct_get_tuple_skb(struct nf_conntrack_tuple *dst_tuple,
const struct sk_buff *skb)
{
- struct nf_ct_hook *ct_hook;
+ const struct nf_ct_hook *ct_hook;
bool ret = false;
rcu_read_lock();
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 89f1e5f0090b..cd3d07e418b5 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -2085,9 +2085,9 @@ static int __nf_conntrack_update(struct net *net, struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo)
{
+ const struct nf_nat_hook *nat_hook;
struct nf_conntrack_tuple_hash *h;
struct nf_conntrack_tuple tuple;
- struct nf_nat_hook *nat_hook;
unsigned int status;
int dataoff;
u16 l3num;
@@ -2769,7 +2769,7 @@ int nf_conntrack_init_start(void)
return ret;
}
-static struct nf_ct_hook nf_conntrack_hook = {
+static const struct nf_ct_hook nf_conntrack_hook = {
.update = nf_conntrack_update,
.destroy = destroy_conntrack,
.get_tuple_skb = nf_conntrack_get_tuple_skb,
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 13e2e0390c77..01cc69ab0b4e 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1819,7 +1819,7 @@ ctnetlink_parse_nat_setup(struct nf_conn *ct,
const struct nlattr *attr)
__must_hold(RCU)
{
- struct nf_nat_hook *nat_hook;
+ const struct nf_nat_hook *nat_hook;
int err;
nat_hook = rcu_dereference(nf_nat_hook);
@@ -2921,7 +2921,7 @@ static void ctnetlink_glue_seqadj(struct sk_buff *skb, struct nf_conn *ct,
nf_ct_tcp_seqadj_set(skb, ct, ctinfo, diff);
}
-static struct nfnl_ct_hook ctnetlink_glue_hook = {
+static const struct nfnl_ct_hook ctnetlink_glue_hook = {
.build_size = ctnetlink_glue_build_size,
.build = ctnetlink_glue_build,
.parse = ctnetlink_glue_parse,
diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index 3dd130487b5b..2d06a66899b2 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -1167,7 +1167,7 @@ static struct pernet_operations nat_net_ops = {
.size = sizeof(struct nat_net),
};
-static struct nf_nat_hook nat_hook = {
+static const struct nf_nat_hook nat_hook = {
.parse_nat_setup = nfnetlink_parse_nat_setup,
#ifdef CONFIG_XFRM
.decode_session = __nf_nat_decode_session,
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 08771f47d469..862d8a3a0911 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -225,7 +225,7 @@ find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id)
static void nfqnl_reinject(struct nf_queue_entry *entry, unsigned int verdict)
{
- struct nf_ct_hook *ct_hook;
+ const struct nf_ct_hook *ct_hook;
int err;
if (verdict == NF_ACCEPT ||
@@ -388,7 +388,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
struct net_device *outdev;
struct nf_conn *ct = NULL;
enum ip_conntrack_info ctinfo = 0;
- struct nfnl_ct_hook *nfnl_ct;
+ const struct nfnl_ct_hook *nfnl_ct;
bool csum_verify;
char *secdata = NULL;
u32 seclen = 0;
@@ -1103,7 +1103,7 @@ static int nfqnl_recv_verdict_batch(struct sk_buff *skb,
return 0;
}
-static struct nf_conn *nfqnl_ct_parse(struct nfnl_ct_hook *nfnl_ct,
+static struct nf_conn *nfqnl_ct_parse(const struct nfnl_ct_hook *nfnl_ct,
const struct nlmsghdr *nlh,
const struct nlattr * const nfqa[],
struct nf_queue_entry *entry,
@@ -1170,11 +1170,11 @@ static int nfqnl_recv_verdict(struct sk_buff *skb, const struct nfnl_info *info,
{
struct nfnl_queue_net *q = nfnl_queue_pernet(info->net);
u_int16_t queue_num = ntohs(info->nfmsg->res_id);
+ const struct nfnl_ct_hook *nfnl_ct;
struct nfqnl_msg_verdict_hdr *vhdr;
enum ip_conntrack_info ctinfo;
struct nfqnl_instance *queue;
struct nf_queue_entry *entry;
- struct nfnl_ct_hook *nfnl_ct;
struct nf_conn *ct = NULL;
unsigned int verdict;
int err;
--
2.34.1
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