[INET_DIAG]: Move the tcp_diag interface to the proper place
With this the previous setup is back, i.e. tcp_diag can be built as a module,
as dccp_diag and both share the infrastructure available in inet_diag.
If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be
built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was
selected static or as a module, if CONFIG_INET_DIAG is y, being statically
linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be
built in the same manner as CONFIG_IP_DCCP.
Now to aim at UDP, converting it to use inet_hashinfo, so that we can use
iproute2 for UDP sockets as well.
Ah, just to show an example of this new infrastructure working for DCCP :-)
[root@qemu ~]# ./ss -dane
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0
ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60
ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700
TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-12 15:59:17 +00:00
|
|
|
/*
|
|
|
|
* tcp_diag.c Module for monitoring TCP transport protocols sockets.
|
|
|
|
*
|
|
|
|
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version
|
|
|
|
* 2 of the License, or (at your option) any later version.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
2015-12-16 03:30:05 +00:00
|
|
|
#include <linux/net.h>
|
|
|
|
#include <linux/sock_diag.h>
|
[INET_DIAG]: Move the tcp_diag interface to the proper place
With this the previous setup is back, i.e. tcp_diag can be built as a module,
as dccp_diag and both share the infrastructure available in inet_diag.
If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be
built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was
selected static or as a module, if CONFIG_INET_DIAG is y, being statically
linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be
built in the same manner as CONFIG_IP_DCCP.
Now to aim at UDP, converting it to use inet_hashinfo, so that we can use
iproute2 for UDP sockets as well.
Ah, just to show an example of this new infrastructure working for DCCP :-)
[root@qemu ~]# ./ss -dane
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0
ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60
ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700
TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-12 15:59:17 +00:00
|
|
|
#include <linux/inet_diag.h>
|
|
|
|
|
|
|
|
#include <linux/tcp.h>
|
|
|
|
|
2017-08-31 16:59:39 +00:00
|
|
|
#include <net/netlink.h>
|
[INET_DIAG]: Move the tcp_diag interface to the proper place
With this the previous setup is back, i.e. tcp_diag can be built as a module,
as dccp_diag and both share the infrastructure available in inet_diag.
If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be
built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was
selected static or as a module, if CONFIG_INET_DIAG is y, being statically
linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be
built in the same manner as CONFIG_IP_DCCP.
Now to aim at UDP, converting it to use inet_hashinfo, so that we can use
iproute2 for UDP sockets as well.
Ah, just to show an example of this new infrastructure working for DCCP :-)
[root@qemu ~]# ./ss -dane
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0
ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60
ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700
TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-12 15:59:17 +00:00
|
|
|
#include <net/tcp.h>
|
|
|
|
|
|
|
|
static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
|
|
|
|
void *_info)
|
|
|
|
{
|
|
|
|
struct tcp_info *info = _info;
|
|
|
|
|
2017-12-20 03:12:52 +00:00
|
|
|
if (inet_sk_state_load(sk) == TCP_LISTEN) {
|
2006-06-27 20:29:00 +00:00
|
|
|
r->idiag_rqueue = sk->sk_ack_backlog;
|
2007-09-18 20:26:31 +00:00
|
|
|
r->idiag_wqueue = sk->sk_max_ack_backlog;
|
2015-06-15 15:26:20 +00:00
|
|
|
} else if (sk->sk_type == SOCK_STREAM) {
|
|
|
|
const struct tcp_sock *tp = tcp_sk(sk);
|
|
|
|
|
2009-12-04 00:06:13 +00:00
|
|
|
r->idiag_rqueue = max_t(int, tp->rcv_nxt - tp->copied_seq, 0);
|
2007-09-18 20:26:31 +00:00
|
|
|
r->idiag_wqueue = tp->write_seq - tp->snd_una;
|
|
|
|
}
|
2015-04-03 08:17:27 +00:00
|
|
|
if (info)
|
[INET_DIAG]: Move the tcp_diag interface to the proper place
With this the previous setup is back, i.e. tcp_diag can be built as a module,
as dccp_diag and both share the infrastructure available in inet_diag.
If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be
built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was
selected static or as a module, if CONFIG_INET_DIAG is y, being statically
linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be
built in the same manner as CONFIG_IP_DCCP.
Now to aim at UDP, converting it to use inet_hashinfo, so that we can use
iproute2 for UDP sockets as well.
Ah, just to show an example of this new infrastructure working for DCCP :-)
[root@qemu ~]# ./ss -dane
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0
ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60
ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700
TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-12 15:59:17 +00:00
|
|
|
tcp_get_info(sk, info);
|
|
|
|
}
|
|
|
|
|
2017-08-31 16:59:39 +00:00
|
|
|
#ifdef CONFIG_TCP_MD5SIG
|
|
|
|
static void tcp_diag_md5sig_fill(struct tcp_diag_md5sig *info,
|
|
|
|
const struct tcp_md5sig_key *key)
|
|
|
|
{
|
|
|
|
info->tcpm_family = key->family;
|
|
|
|
info->tcpm_prefixlen = key->prefixlen;
|
|
|
|
info->tcpm_keylen = key->keylen;
|
|
|
|
memcpy(info->tcpm_key, key->key, key->keylen);
|
|
|
|
|
|
|
|
if (key->family == AF_INET)
|
|
|
|
info->tcpm_addr[0] = key->addr.a4.s_addr;
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
else if (key->family == AF_INET6)
|
|
|
|
memcpy(&info->tcpm_addr, &key->addr.a6,
|
|
|
|
sizeof(info->tcpm_addr));
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tcp_diag_put_md5sig(struct sk_buff *skb,
|
|
|
|
const struct tcp_md5sig_info *md5sig)
|
|
|
|
{
|
|
|
|
const struct tcp_md5sig_key *key;
|
|
|
|
struct tcp_diag_md5sig *info;
|
|
|
|
struct nlattr *attr;
|
|
|
|
int md5sig_count = 0;
|
|
|
|
|
|
|
|
hlist_for_each_entry_rcu(key, &md5sig->head, node)
|
|
|
|
md5sig_count++;
|
|
|
|
if (md5sig_count == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
attr = nla_reserve(skb, INET_DIAG_MD5SIG,
|
|
|
|
md5sig_count * sizeof(struct tcp_diag_md5sig));
|
|
|
|
if (!attr)
|
|
|
|
return -EMSGSIZE;
|
|
|
|
|
|
|
|
info = nla_data(attr);
|
|
|
|
memset(info, 0, md5sig_count * sizeof(struct tcp_diag_md5sig));
|
|
|
|
hlist_for_each_entry_rcu(key, &md5sig->head, node) {
|
|
|
|
tcp_diag_md5sig_fill(info++, key);
|
|
|
|
if (--md5sig_count == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int tcp_diag_get_aux(struct sock *sk, bool net_admin,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
#ifdef CONFIG_TCP_MD5SIG
|
|
|
|
if (net_admin) {
|
|
|
|
struct tcp_md5sig_info *md5sig;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
|
|
|
|
if (md5sig)
|
|
|
|
err = tcp_diag_put_md5sig(skb, md5sig);
|
|
|
|
rcu_read_unlock();
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
|
|
|
|
{
|
|
|
|
size_t size = 0;
|
|
|
|
|
|
|
|
#ifdef CONFIG_TCP_MD5SIG
|
|
|
|
if (net_admin && sk_fullsock(sk)) {
|
|
|
|
const struct tcp_md5sig_info *md5sig;
|
|
|
|
const struct tcp_md5sig_key *key;
|
|
|
|
size_t md5sig_count = 0;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
md5sig = rcu_dereference(tcp_sk(sk)->md5sig_info);
|
|
|
|
if (md5sig) {
|
|
|
|
hlist_for_each_entry_rcu(key, &md5sig->head, node)
|
|
|
|
md5sig_count++;
|
|
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
size += nla_total_size(md5sig_count *
|
|
|
|
sizeof(struct tcp_diag_md5sig));
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
2011-12-09 06:23:18 +00:00
|
|
|
static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
|
2015-03-10 14:15:54 +00:00
|
|
|
const struct inet_diag_req_v2 *r, struct nlattr *bc)
|
2011-12-09 06:23:18 +00:00
|
|
|
{
|
|
|
|
inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r, bc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tcp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
|
2015-03-10 14:15:54 +00:00
|
|
|
const struct inet_diag_req_v2 *req)
|
2011-12-09 06:23:18 +00:00
|
|
|
{
|
|
|
|
return inet_diag_dump_one_icsk(&tcp_hashinfo, in_skb, nlh, req);
|
|
|
|
}
|
|
|
|
|
2015-12-16 03:30:05 +00:00
|
|
|
#ifdef CONFIG_INET_DIAG_DESTROY
|
|
|
|
static int tcp_diag_destroy(struct sk_buff *in_skb,
|
|
|
|
const struct inet_diag_req_v2 *req)
|
|
|
|
{
|
|
|
|
struct net *net = sock_net(in_skb->sk);
|
|
|
|
struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req);
|
2016-08-24 04:05:27 +00:00
|
|
|
int err;
|
2015-12-16 03:30:05 +00:00
|
|
|
|
|
|
|
if (IS_ERR(sk))
|
|
|
|
return PTR_ERR(sk);
|
|
|
|
|
2016-08-24 04:05:27 +00:00
|
|
|
err = sock_diag_destroy(sk, ECONNABORTED);
|
|
|
|
|
|
|
|
sock_gen_put(sk);
|
|
|
|
|
|
|
|
return err;
|
2015-12-16 03:30:05 +00:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2008-11-19 23:43:27 +00:00
|
|
|
static const struct inet_diag_handler tcp_diag_handler = {
|
2017-08-31 16:59:39 +00:00
|
|
|
.dump = tcp_diag_dump,
|
|
|
|
.dump_one = tcp_diag_dump_one,
|
|
|
|
.idiag_get_info = tcp_diag_get_info,
|
|
|
|
.idiag_get_aux = tcp_diag_get_aux,
|
|
|
|
.idiag_get_aux_size = tcp_diag_get_aux_size,
|
|
|
|
.idiag_type = IPPROTO_TCP,
|
|
|
|
.idiag_info_size = sizeof(struct tcp_info),
|
2015-12-16 03:30:05 +00:00
|
|
|
#ifdef CONFIG_INET_DIAG_DESTROY
|
2017-08-31 16:59:39 +00:00
|
|
|
.destroy = tcp_diag_destroy,
|
2015-12-16 03:30:05 +00:00
|
|
|
#endif
|
[INET_DIAG]: Move the tcp_diag interface to the proper place
With this the previous setup is back, i.e. tcp_diag can be built as a module,
as dccp_diag and both share the infrastructure available in inet_diag.
If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be
built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was
selected static or as a module, if CONFIG_INET_DIAG is y, being statically
linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be
built in the same manner as CONFIG_IP_DCCP.
Now to aim at UDP, converting it to use inet_hashinfo, so that we can use
iproute2 for UDP sockets as well.
Ah, just to show an example of this new infrastructure working for DCCP :-)
[root@qemu ~]# ./ss -dane
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0
ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60
ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700
TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-12 15:59:17 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static int __init tcp_diag_init(void)
|
|
|
|
{
|
|
|
|
return inet_diag_register(&tcp_diag_handler);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit tcp_diag_exit(void)
|
|
|
|
{
|
|
|
|
inet_diag_unregister(&tcp_diag_handler);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(tcp_diag_init);
|
|
|
|
module_exit(tcp_diag_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
2011-12-15 02:43:27 +00:00
|
|
|
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-6 /* AF_INET - IPPROTO_TCP */);
|