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[INET_DIAG]: Move the tcp_diag interface to the proper place

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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2005-08-12 12:59:17 -03:00 committed by David S. Miller
parent a8c2190ee7
commit 17b085eace
7 changed files with 70 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/tcp.h
View File

@ -479,7 +479,7 @@ static inline void tcp_clear_xmit_timers(struct sock *sk)
extern unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu);
extern unsigned int tcp_current_mss(struct sock *sk, int large);
/* tcp_diag.c */
/* tcp.c */
extern void tcp_get_info(struct sock *, struct tcp_info *);
/* Read 'sendfile()'-style from a TCP socket */

6
net/dccp/Kconfig
View File

@ -19,9 +19,9 @@ config IP_DCCP
If in doubt, say N.
config IP_DCCP_DIAG
depends on IP_DCCP && IP_INET_DIAG
def_tristate y if (IP_DCCP = y && IP_INET_DIAG = y)
config INET_DCCP_DIAG
depends on IP_DCCP && INET_DIAG
def_tristate y if (IP_DCCP = y && INET_DIAG = y)
def_tristate m
source "net/dccp/ccids/Kconfig"

6
net/dccp/Makefile
View File

@ -3,8 +3,8 @@ obj-$(CONFIG_IP_DCCP) += dccp.o
dccp-y := ccid.o input.o ipv4.o minisocks.o options.o output.o proto.o \
timer.o packet_history.o
obj-$(CONFIG_IP_DCCP_DIAG) += dccp_diag.o
obj-y += ccids/
obj-$(CONFIG_INET_DCCP_DIAG) += dccp_diag.o
dccp_diag-y := diag.o
obj-y += ccids/

8
net/ipv4/Kconfig
View File

@ -413,8 +413,8 @@ config INET_TUNNEL
If unsure, say Y.
config IP_INET_DIAG
tristate "IP: INET socket monitoring interface"
config INET_DIAG
tristate "INET: socket monitoring interface"
default y
---help---
Support for INET (TCP, DCCP, etc) socket monitoring interface used by
@ -423,6 +423,10 @@ config IP_INET_DIAG
If unsure, say Y.
config INET_TCP_DIAG
depends on INET_DIAG
def_tristate INET_DIAG
config TCP_CONG_ADVANCED
bool "TCP: advanced congestion control"
---help---

3
net/ipv4/Makefile
View File

@ -30,8 +30,9 @@ obj-$(CONFIG_IP_ROUTE_MULTIPATH_WRANDOM) += multipath_wrandom.o
obj-$(CONFIG_IP_ROUTE_MULTIPATH_DRR) += multipath_drr.o
obj-$(CONFIG_NETFILTER) += netfilter/
obj-$(CONFIG_IP_VS) += ipvs/
obj-$(CONFIG_IP_INET_DIAG) += inet_diag.o
obj-$(CONFIG_INET_DIAG) += inet_diag.o
obj-$(CONFIG_IP_ROUTE_MULTIPATH_CACHED) += multipath.o
obj-$(CONFIG_INET_TCP_DIAG) += tcp_diag.o
obj-$(CONFIG_TCP_CONG_BIC) += tcp_bic.o
obj-$(CONFIG_TCP_CONG_WESTWOOD) += tcp_westwood.o
obj-$(CONFIG_TCP_CONG_HSTCP) += tcp_highspeed.o

27
net/ipv4/inet_diag.c
View File

@ -797,25 +797,6 @@ static void inet_diag_rcv(struct sock *sk, int len)
}
}
static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
void *_info)
{
const struct tcp_sock *tp = tcp_sk(sk);
struct tcp_info *info = _info;
r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq;
r->idiag_wqueue = tp->write_seq - tp->snd_una;
if (info != NULL)
tcp_get_info(sk, info);
}
static struct inet_diag_handler tcp_diag_handler = {
.idiag_hashinfo = &tcp_hashinfo,
.idiag_get_info = tcp_diag_get_info,
.idiag_type = TCPDIAG_GETSOCK,
.idiag_info_size = sizeof(struct tcp_info),
};
static DEFINE_SPINLOCK(inet_diag_register_lock);
int inet_diag_register(const struct inet_diag_handler *h)
@ -864,19 +845,13 @@ static int __init inet_diag_init(void)
goto out;
memset(inet_diag_table, 0, inet_diag_table_size);
idiagnl = netlink_kernel_create(NETLINK_INET_DIAG, inet_diag_rcv,
THIS_MODULE);
if (idiagnl == NULL)
goto out_free_table;
err = inet_diag_register(&tcp_diag_handler);
if (err)
goto out_sock_release;
err = 0;
out:
return err;
out_sock_release:
sock_release(idiagnl->sk_socket);
out_free_table:
kfree(inet_diag_table);
goto out;

54
net/ipv4/tcp_diag.c Normal file
View File

@ -0,0 +1,54 @@
/*
* tcp_diag.c Module for monitoring TCP transport protocols sockets.
*
* Version: $Id: tcp_diag.c,v 1.3 2002/02/01 22:01:04 davem Exp $
*
* 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/config.h>
#include <linux/module.h>
#include <linux/inet_diag.h>
#include <linux/tcp.h>
#include <net/tcp.h>
static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
void *_info)
{
const struct tcp_sock *tp = tcp_sk(sk);
struct tcp_info *info = _info;
r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq;
r->idiag_wqueue = tp->write_seq - tp->snd_una;
if (info != NULL)
tcp_get_info(sk, info);
}
static struct inet_diag_handler tcp_diag_handler = {
.idiag_hashinfo = &tcp_hashinfo,
.idiag_get_info = tcp_diag_get_info,
.idiag_type = TCPDIAG_GETSOCK,
.idiag_info_size = sizeof(struct tcp_info),
};
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");