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// TCP tapset
// Copyright (C) 2006 IBM Corp.
// Copyright (C) 2006 Intel Corporation.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
%{
#include <linux/version.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/ip.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
#define LPORT (inet->inet.num)
#define DADDR (&inet->inet.daddr)
#else
#define LPORT (inet->num)
#define DADDR (&inet->daddr)
#endif
%}
function tcp_get_local_port:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
struct inet_sock *inet = (struct inet_sock *) ptr;
THIS->__retvalue = (long long) LPORT;
%}
function tcp_get_ip_source:string(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
struct inet_sock *inet = (struct inet_sock *) ptr;
unsigned char addr[4];
memcpy(addr, DADDR, sizeof(addr));
sprintf(THIS->__retvalue, "%d.%d.%d.%d",
addr[0], addr[1], addr[2], addr[3]);
%}
function tcp_get_info_rto:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
const struct inet_connection_sock *icsk = inet_csk((struct sock *)ptr);
THIS->__retvalue = (int64_t) jiffies_to_usecs(icsk->icsk_rto);
%}
function tcp_get_info_snd_cwnd:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
struct tcp_sock *tp = tcp_sk((struct sock *)ptr);
THIS->__retvalue = (int64_t) tp->snd_cwnd;
%}
function tcp_ts_get_info_state:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
struct sock * sk = (struct sock *) ptr;
THIS->__retvalue = (int64_t) sk->sk_state;
%}
function tcp_ts_get_info_snd_ssthresh:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
struct tcp_sock *tp = tcp_sk((struct sock *)ptr);
THIS->__retvalue = (int64_t) tp->snd_ssthresh;
%}
function tcp_ts_get_info_rcv_mss:long(sock:long)
%{
unsigned long ptr = (unsigned long) THIS->sock;
const struct inet_connection_sock *icsk = inet_csk((struct sock *)ptr);
THIS->__retvalue = (int64_t) icsk->icsk_ack.rcv_mss;
%}
/* probe tcp.sendmsg
*
* Fires whenever sending a tcp message
*
* Context:
* The process which sends a tcp message
*
* Arguments:
* sk - socket
* size - number of bytes to send
*/
probe tcp.sendmsg = kernel.function("tcp_sendmsg") {
sk = $sk
size = $size
}
/* probe tcp.sendmsg.return
*
* Fires whenever sending message is done
*
* Context:
* The process which sends a tcp message
*
* Arguments:
* size - number of bytes sent
*/
probe tcp.sendmsg.return = kernel.function("tcp_sendmsg").return {
size = $return
}
/* probe tcp.recvmsg
*
* Fires whenever a message is received
*
* Context:
* The process which receives a tcp message
*
* Arguments:
* sk - socket
* len - number of bytes to be received
*/
probe tcp.recvmsg = kernel.function("tcp_recvmsg") {
sk = $sk
len = $len
}
/* probe tcp.recvmsg.return
*
* Fires whenever message receiving is done
*
* Context:
* The process which receives a tcp message
*
* Arguments:
* size - number of bytes received
*/
probe tcp.recvmsg.return = kernel.function("tcp_recvmsg").return {
size = $return
}
/* probe tcp.disconnect
*
* Fires whenever tcp is disconnected
*
* Context:
* The process which disconnects tcp
*
* Arguments:
* sk - socket
* flags - TCP flags (e.g. FIN, etc)
*/
probe tcp.disconnect = kernel.function("tcp_disconnect") {
sk = $sk
flags = $flags
}
/* probe tcp.disconnect.return
*
* Fires when returning from tcp.disconnect
*
* Context:
* The process which disconnects tcp
*
* Arguments:
* ret - error code (0: no error)
*/
probe tcp.disconnect.return = kernel.function("tcp_disconnect").return {
ret = $return
}
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