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Diffstat (limited to 'net/ipv4/ping.c')
-rw-r--r--net/ipv4/ping.c68
1 files changed, 32 insertions, 36 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 031df4c19fcc..5321c5801c64 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -56,9 +56,7 @@ struct ping_table {
static struct ping_table ping_table;
struct pingv6_ops pingv6_ops;
-EXPORT_SYMBOL_GPL(pingv6_ops);
-
-static u16 ping_port_rover;
+EXPORT_IPV6_MOD_GPL(pingv6_ops);
static inline u32 ping_hashfn(const struct net *net, u32 num, u32 mask)
{
@@ -67,7 +65,6 @@ static inline u32 ping_hashfn(const struct net *net, u32 num, u32 mask)
pr_debug("hash(%u) = %u\n", num, res);
return res;
}
-EXPORT_SYMBOL_GPL(ping_hash);
static inline struct hlist_head *ping_hashslot(struct ping_table *table,
struct net *net, unsigned int num)
@@ -77,6 +74,7 @@ static inline struct hlist_head *ping_hashslot(struct ping_table *table,
int ping_get_port(struct sock *sk, unsigned short ident)
{
+ struct net *net = sock_net(sk);
struct inet_sock *isk, *isk2;
struct hlist_head *hlist;
struct sock *sk2 = NULL;
@@ -84,15 +82,16 @@ int ping_get_port(struct sock *sk, unsigned short ident)
isk = inet_sk(sk);
spin_lock(&ping_table.lock);
if (ident == 0) {
+ u16 result = net->ipv4.ping_port_rover + 1;
u32 i;
- u16 result = ping_port_rover + 1;
for (i = 0; i < (1L << 16); i++, result++) {
if (!result)
- result++; /* avoid zero */
- hlist = ping_hashslot(&ping_table, sock_net(sk),
- result);
+ continue; /* avoid zero */
+ hlist = ping_hashslot(&ping_table, net, result);
sk_for_each(sk2, hlist) {
+ if (!net_eq(sock_net(sk2), net))
+ continue;
isk2 = inet_sk(sk2);
if (isk2->inet_num == result)
@@ -100,7 +99,7 @@ int ping_get_port(struct sock *sk, unsigned short ident)
}
/* found */
- ping_port_rover = ident = result;
+ net->ipv4.ping_port_rover = ident = result;
break;
next_port:
;
@@ -108,8 +107,10 @@ next_port:
if (i >= (1L << 16))
goto fail;
} else {
- hlist = ping_hashslot(&ping_table, sock_net(sk), ident);
+ hlist = ping_hashslot(&ping_table, net, ident);
sk_for_each(sk2, hlist) {
+ if (!net_eq(sock_net(sk2), net))
+ continue;
isk2 = inet_sk(sk2);
/* BUG? Why is this reuse and not reuseaddr? ping.c
@@ -129,7 +130,7 @@ next_port:
pr_debug("was not hashed\n");
sk_add_node_rcu(sk, hlist);
sock_set_flag(sk, SOCK_RCU_FREE);
- sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+ sock_prot_inuse_add(net, sk->sk_prot, 1);
}
spin_unlock(&ping_table.lock);
return 0;
@@ -138,15 +139,7 @@ fail:
spin_unlock(&ping_table.lock);
return -EADDRINUSE;
}
-EXPORT_SYMBOL_GPL(ping_get_port);
-
-int ping_hash(struct sock *sk)
-{
- pr_debug("ping_hash(sk->port=%u)\n", inet_sk(sk)->inet_num);
- BUG(); /* "Please do not press this button again." */
-
- return 0;
-}
+EXPORT_IPV6_MOD_GPL(ping_get_port);
void ping_unhash(struct sock *sk)
{
@@ -161,7 +154,7 @@ void ping_unhash(struct sock *sk)
}
spin_unlock(&ping_table.lock);
}
-EXPORT_SYMBOL_GPL(ping_unhash);
+EXPORT_IPV6_MOD_GPL(ping_unhash);
/* Called under rcu_read_lock() */
static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident)
@@ -188,6 +181,8 @@ static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident)
}
sk_for_each_rcu(sk, hslot) {
+ if (!net_eq(sock_net(sk), net))
+ continue;
isk = inet_sk(sk);
pr_debug("iterate\n");
@@ -279,7 +274,7 @@ out_release_group:
put_group_info(group_info);
return ret;
}
-EXPORT_SYMBOL_GPL(ping_init_sock);
+EXPORT_IPV6_MOD_GPL(ping_init_sock);
void ping_close(struct sock *sk, long timeout)
{
@@ -289,7 +284,7 @@ void ping_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
-EXPORT_SYMBOL_GPL(ping_close);
+EXPORT_IPV6_MOD_GPL(ping_close);
static int ping_pre_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
@@ -467,7 +462,7 @@ out:
pr_debug("ping_v4_bind -> %d\n", err);
return err;
}
-EXPORT_SYMBOL_GPL(ping_bind);
+EXPORT_IPV6_MOD_GPL(ping_bind);
/*
* Is this a supported type of ICMP message?
@@ -600,7 +595,7 @@ void ping_err(struct sk_buff *skb, int offset, u32 info)
out:
return;
}
-EXPORT_SYMBOL_GPL(ping_err);
+EXPORT_IPV6_MOD_GPL(ping_err);
/*
* Copy and checksum an ICMP Echo packet from user space into a buffer
@@ -630,7 +625,7 @@ int ping_getfrag(void *from, char *to,
return 0;
}
-EXPORT_SYMBOL_GPL(ping_getfrag);
+EXPORT_IPV6_MOD_GPL(ping_getfrag);
static int ping_v4_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,
struct flowi4 *fl4)
@@ -691,7 +686,7 @@ int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
return 0;
}
-EXPORT_SYMBOL_GPL(ping_common_sendmsg);
+EXPORT_IPV6_MOD_GPL(ping_common_sendmsg);
static int ping_v4_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
{
@@ -936,7 +931,7 @@ out:
pr_debug("ping_recvmsg -> %d\n", err);
return err;
}
-EXPORT_SYMBOL_GPL(ping_recvmsg);
+EXPORT_IPV6_MOD_GPL(ping_recvmsg);
static enum skb_drop_reason __ping_queue_rcv_skb(struct sock *sk,
struct sk_buff *skb)
@@ -957,7 +952,7 @@ int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
return __ping_queue_rcv_skb(sk, skb) ? -1 : 0;
}
-EXPORT_SYMBOL_GPL(ping_queue_rcv_skb);
+EXPORT_IPV6_MOD_GPL(ping_queue_rcv_skb);
/*
@@ -985,7 +980,7 @@ enum skb_drop_reason ping_rcv(struct sk_buff *skb)
kfree_skb_reason(skb, SKB_DROP_REASON_NO_SOCKET);
return SKB_DROP_REASON_NO_SOCKET;
}
-EXPORT_SYMBOL_GPL(ping_rcv);
+EXPORT_IPV6_MOD_GPL(ping_rcv);
struct proto ping_prot = {
.name = "PING",
@@ -1002,13 +997,12 @@ struct proto ping_prot = {
.bind = ping_bind,
.backlog_rcv = ping_queue_rcv_skb,
.release_cb = ip4_datagram_release_cb,
- .hash = ping_hash,
.unhash = ping_unhash,
.get_port = ping_get_port,
.put_port = ping_unhash,
.obj_size = sizeof(struct inet_sock),
};
-EXPORT_SYMBOL(ping_prot);
+EXPORT_IPV6_MOD(ping_prot);
#ifdef CONFIG_PROC_FS
@@ -1073,7 +1067,7 @@ void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family)
return *pos ? ping_get_idx(seq, *pos-1) : SEQ_START_TOKEN;
}
-EXPORT_SYMBOL_GPL(ping_seq_start);
+EXPORT_IPV6_MOD_GPL(ping_seq_start);
static void *ping_v4_seq_start(struct seq_file *seq, loff_t *pos)
{
@@ -1092,14 +1086,14 @@ void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
++*pos;
return sk;
}
-EXPORT_SYMBOL_GPL(ping_seq_next);
+EXPORT_IPV6_MOD_GPL(ping_seq_next);
void ping_seq_stop(struct seq_file *seq, void *v)
__releases(ping_table.lock)
{
spin_unlock(&ping_table.lock);
}
-EXPORT_SYMBOL_GPL(ping_seq_stop);
+EXPORT_IPV6_MOD_GPL(ping_seq_stop);
static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
int bucket)
@@ -1119,7 +1113,7 @@ static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
from_kuid_munged(seq_user_ns(f), sk_uid(sp)),
0, sock_i_ino(sp),
refcount_read(&sp->sk_refcnt), sp,
- atomic_read(&sp->sk_drops));
+ sk_drops_read(sp));
}
static int ping_v4_seq_show(struct seq_file *seq, void *v)
@@ -1150,6 +1144,8 @@ static int __net_init ping_v4_proc_init_net(struct net *net)
if (!proc_create_net("icmp", 0444, net->proc_net, &ping_v4_seq_ops,
sizeof(struct ping_iter_state)))
return -ENOMEM;
+
+ net->ipv4.ping_port_rover = get_random_u16();
return 0;
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-03 07:21:48 +0000