forked from luck/tmp_suning_uos_patched
2babe1f6fe
And also hc_tx and hc_rx get_info functions for the CCIDs to fill in
information that is specific to them.
For now reusing struct tcp_info, later I'll try to figure out a better
solution, for now its really nice to get this kind of info:
[root@qemu ~]# ./ss -danemi
State Recv-Q Send-Q Local Addr:Port Peer Addr:Port
LISTEN 0 0 *:5001 *:* ino:628 sk:c1340040
mem:(r0,w0,f0,t0) cwnd:0 ssthresh:0
ESTAB 0 0 172.20.0.2:5001 172.20.0.1:32785 ino:629 sk:c13409a0
mem:(r0,w0,f0,t0) ts rto:1000 rtt:0.004/0 cwnd:0 ssthresh:0 rcv_rtt:61.377
This, for instance, shows that we're not congestion controlling ACKs,
as the above output is in the ttcp receiving host, and ttcp is a one
way app, i.e. the received never calls sendmsg, so
ccid_hc_tx_send_packet is never called, so the TX half connection
stays in TFRC_SSTATE_NO_SENT state and hctx_rtt is never calculated,
stays with the value set in ccid3_hc_tx_init, 4us, as show above in
milliseconds (0.004ms), upcoming patches will fix this.
rcv_rtt seems sane tho, matching ping results :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
|
|
* net/dccp/diag.c
|
|
*
|
|
* An implementation of the DCCP protocol
|
|
* Arnaldo Carvalho de Melo <acme@mandriva.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/inet_diag.h>
|
|
|
|
#include "ccid.h"
|
|
#include "dccp.h"
|
|
|
|
static void dccp_get_info(struct sock *sk, struct tcp_info *info)
|
|
{
|
|
struct dccp_sock *dp = dccp_sk(sk);
|
|
const struct inet_connection_sock *icsk = inet_csk(sk);
|
|
|
|
memset(info, 0, sizeof(*info));
|
|
|
|
info->tcpi_state = sk->sk_state;
|
|
info->tcpi_retransmits = icsk->icsk_retransmits;
|
|
info->tcpi_probes = icsk->icsk_probes_out;
|
|
info->tcpi_backoff = icsk->icsk_backoff;
|
|
info->tcpi_pmtu = dp->dccps_pmtu_cookie;
|
|
|
|
if (dp->dccps_options.dccpo_send_ack_vector)
|
|
info->tcpi_options |= TCPI_OPT_SACK;
|
|
|
|
ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
|
|
ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
|
|
}
|
|
|
|
static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
|
|
void *_info)
|
|
{
|
|
r->idiag_rqueue = r->idiag_wqueue = 0;
|
|
|
|
if (_info != NULL)
|
|
dccp_get_info(sk, _info);
|
|
}
|
|
|
|
static struct inet_diag_handler dccp_diag_handler = {
|
|
.idiag_hashinfo = &dccp_hashinfo,
|
|
.idiag_get_info = dccp_diag_get_info,
|
|
.idiag_type = DCCPDIAG_GETSOCK,
|
|
.idiag_info_size = sizeof(struct tcp_info),
|
|
};
|
|
|
|
static int __init dccp_diag_init(void)
|
|
{
|
|
return inet_diag_register(&dccp_diag_handler);
|
|
}
|
|
|
|
static void __exit dccp_diag_fini(void)
|
|
{
|
|
inet_diag_unregister(&dccp_diag_handler);
|
|
}
|
|
|
|
module_init(dccp_diag_init);
|
|
module_exit(dccp_diag_fini);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
|
|
MODULE_DESCRIPTION("DCCP inet_diag handler");
|