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netfilter: make function op structures const

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No functional changes, these structures should be const.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2022-01-07 05:03:24 +01:00 committed by Pablo Neira Ayuso
parent 3fce16493d
commit 285c8a7a58
6 changed files with 18 additions and 18 deletions
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8
include/linux/netfilter.h
View File

@ -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

10
net/netfilter/core.c
View File

@ -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();

4
net/netfilter/nf_conntrack_core.c
View File

@ -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 @@ err_cachep:
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,

4
net/netfilter/nf_conntrack_netlink.c
View File

@ -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,

2
net/netfilter/nf_nat_core.c
View File

@ -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,

8
net/netfilter/nfnetlink_queue.c
View File

@ -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;