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Date: Sat, 1 Jun 2013 10:05:50 +0900
From: Lorenzo Colitti <lorenzo@...gle.com>
To: netdev@...r.kernel.org
Cc: Eric Dumazet <edumazet@...gle.com>,
David Miller <davem@...emloft.net>,
YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
Vasiliy Kulikov <segoon@...nwall.com>,
Lorenzo Colitti <lorenzo@...gle.com>
Subject: [PATCH v4 4/4] net: ipv6: Implement /proc/net/icmp6.
The format is based on /proc/net/icmp and /proc/net/{udp,raw}6.
Compiles and displays reasonable results with CONFIG_IPV6={n,m,y}
Couldn't figure out how to test without CONFIG_PROC_FS enabled.
Signed-off-by: Lorenzo Colitti <lorenzo@...gle.com>
---
include/net/ping.h | 8 +++++
net/ipv4/ping.c | 21 ++++++-----
net/ipv6/ping.c | 102 +++++++++++++++++++++++++++++++++++++++++------------
3 files changed, 99 insertions(+), 32 deletions(-)
diff --git a/include/net/ping.h b/include/net/ping.h
index b9282f0..db04802 100644
--- a/include/net/ping.h
+++ b/include/net/ping.h
@@ -95,6 +95,14 @@ struct ping_seq_afinfo {
const struct seq_operations seq_ops;
};
+extern const struct file_operations ping_seq_fops;
+
+void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
+void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
+void ping_seq_stop(struct seq_file *seq, void *v);
+int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
+void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
+
extern int __init ping_proc_init(void);
extern void ping_proc_exit(void);
#endif
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 8c2da9b..3552a45 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -1035,8 +1035,7 @@ static struct sock *ping_get_idx(struct seq_file *seq, loff_t pos)
return pos ? NULL : sk;
}
-static void *ping_seq_start(struct seq_file *seq, loff_t *pos,
- sa_family_t family)
+void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family)
{
struct ping_iter_state *state = seq->private;
state->bucket = 0;
@@ -1046,13 +1045,14 @@ static void *ping_seq_start(struct seq_file *seq, loff_t *pos,
return *pos ? ping_get_idx(seq, *pos-1) : SEQ_START_TOKEN;
}
+EXPORT_SYMBOL_GPL(ping_seq_start);
static void *ping_v4_seq_start(struct seq_file *seq, loff_t *pos)
{
return ping_seq_start(seq, pos, AF_INET);
}
-static void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct sock *sk;
@@ -1064,11 +1064,13 @@ static void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
++*pos;
return sk;
}
+EXPORT_SYMBOL_GPL(ping_seq_next);
-static void ping_seq_stop(struct seq_file *seq, void *v)
+void ping_seq_stop(struct seq_file *seq, void *v)
{
read_unlock_bh(&ping_table.lock);
}
+EXPORT_SYMBOL_GPL(ping_seq_stop);
static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
int bucket, int *len)
@@ -1122,12 +1124,13 @@ static int ping_seq_open(struct inode *inode, struct file *file)
sizeof(struct ping_iter_state));
}
-static const struct file_operations ping_seq_fops = {
+const struct file_operations ping_seq_fops = {
.open = ping_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net,
};
+EXPORT_SYMBOL_GPL(ping_seq_fops);
static struct ping_seq_afinfo ping_v4_seq_afinfo = {
.name = "icmp",
@@ -1141,7 +1144,7 @@ static struct ping_seq_afinfo ping_v4_seq_afinfo = {
},
};
-static int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo)
+int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo)
{
struct proc_dir_entry *p;
p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
@@ -1150,13 +1153,13 @@ static int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo)
return -ENOMEM;
return 0;
}
+EXPORT_SYMBOL_GPL(ping_proc_register);
-static void ping_proc_unregister(struct net *net,
- struct ping_seq_afinfo *afinfo)
+void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo)
{
remove_proc_entry(afinfo->name, net->proc_net);
}
-
+EXPORT_SYMBOL_GPL(ping_proc_unregister);
static int __net_init ping_v4_proc_init_net(struct net *net)
{
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index a6462d6..62ac5f2 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -78,29 +78,6 @@ int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
return 0;
}
-int __init pingv6_init(void)
-{
- pingv6_ops.ipv6_recv_error = ipv6_recv_error;
- pingv6_ops.ip6_datagram_recv_ctl = ip6_datagram_recv_ctl;
- pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
- pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
- pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
- return inet6_register_protosw(&pingv6_protosw);
-}
-
-/* This never gets called because it's not possible to unload the ipv6 module,
- * but just in case.
- */
-void pingv6_exit(void)
-{
- pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
- pingv6_ops.ip6_datagram_recv_ctl = dummy_ip6_datagram_recv_ctl;
- pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
- pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
- pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
- inet6_unregister_protosw(&pingv6_protosw);
-}
-
int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
size_t len)
{
@@ -214,3 +191,82 @@ int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
return err;
}
+
+#ifdef CONFIG_PROC_FS
+static void *ping_v6_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ return ping_seq_start(seq, pos, AF_INET6);
+}
+
+int ping_v6_seq_show(struct seq_file *seq, void *v)
+{
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
+ } else {
+ int bucket = ((struct ping_iter_state *) seq->private)->bucket;
+ struct inet_sock *inet = inet_sk(v);
+ __u16 srcp = ntohs(inet->inet_sport);
+ __u16 destp = ntohs(inet->inet_dport);
+ ip6_dgram_sock_seq_show(seq, v, srcp, destp, bucket);
+ }
+ return 0;
+}
+
+static struct ping_seq_afinfo ping_v6_seq_afinfo = {
+ .name = "icmp6",
+ .family = AF_INET6,
+ .seq_fops = &ping_seq_fops,
+ .seq_ops = {
+ .start = ping_v6_seq_start,
+ .show = ping_v6_seq_show,
+ .next = ping_seq_next,
+ .stop = ping_seq_stop,
+ },
+};
+
+static int __net_init ping_v6_proc_init_net(struct net *net)
+{
+ return ping_proc_register(net, &ping_v6_seq_afinfo);
+}
+
+static void __net_init ping_v6_proc_exit_net(struct net *net)
+{
+ return ping_proc_unregister(net, &ping_v6_seq_afinfo);
+}
+
+static struct pernet_operations ping_v6_net_ops = {
+ .init = ping_v6_proc_init_net,
+ .exit = ping_v6_proc_exit_net,
+};
+#endif
+
+int __init pingv6_init(void)
+{
+#ifdef CONFIG_PROC_FS
+ int ret = register_pernet_subsys(&ping_v6_net_ops);
+ if (ret)
+ return ret;
+#endif
+ pingv6_ops.ipv6_recv_error = ipv6_recv_error;
+ pingv6_ops.ip6_datagram_recv_ctl = ip6_datagram_recv_ctl;
+ pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
+ pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
+ pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
+ return inet6_register_protosw(&pingv6_protosw);
+}
+
+/* This never gets called because it's not possible to unload the ipv6 module,
+ * but just in case.
+ */
+void pingv6_exit(void)
+{
+ pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
+ pingv6_ops.ip6_datagram_recv_ctl = dummy_ip6_datagram_recv_ctl;
+ pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
+ pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
+ pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
+#ifdef CONFIG_PROC_FS
+ unregister_pernet_subsys(&ping_v6_net_ops);
+#endif
+ inet6_unregister_protosw(&pingv6_protosw);
+}
--
1.8.2.1
--
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