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dd DTrace probe points, translators and a corresponding script

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to provide the TCPDEBUG functionality with pure DTrace.

Reviewed by:	rwatson
MFC after:	2 weeks
Sponsored by:	Limelight Networks
Differential Revision:	D3530
This commit is contained in:
George V. Neville-Neil 2015-09-13 15:50:55 +00:00
parent 6b56dd0cfa
commit 5d06879adb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=287759
9 changed files with 360 additions and 1 deletions
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133
cddl/lib/libdtrace/tcp.d
View File

@ -103,11 +103,15 @@ typedef struct tcpsinfo {
int32_t tcps_state; /* TCP state */
uint32_t tcps_iss; /* Initial sequence # sent */
uint32_t tcps_suna; /* sequence # sent but unacked */
uint32_t tcps_smax; /* highest sequence number sent */
uint32_t tcps_snxt; /* next sequence # to send */
uint32_t tcps_rack; /* sequence # we have acked */
uint32_t tcps_rnxt; /* next sequence # expected */
uint32_t tcps_swnd; /* send window size */
int32_t tcps_snd_ws; /* send window scaling */
uint32_t tcps_swl1; /* window update seg seq number */
uint32_t tcps_swl2; /* window update seg ack number */
uint32_t tcps_rup; /* receive urgent pointer */
uint32_t tcps_rwnd; /* receive window size */
int32_t tcps_rcv_ws; /* receive window scaling */
uint32_t tcps_cwnd; /* congestion window */
@ -117,7 +121,8 @@ typedef struct tcpsinfo {
uint32_t tcps_rto; /* round-trip timeout, msec */
uint32_t tcps_mss; /* max segment size */
int tcps_retransmit; /* retransmit send event, boolean */
int tcps_srtt; /* smoothed RTT in units of (TCP_RTT_SCALE*hz) */
int tcps_srtt; /* smoothed RTT in units of (TCP_RTT_SCALE*hz) */
int tcps_debug; /* socket has SO_DEBUG set */
} tcpsinfo_t;
/*
@ -188,12 +193,16 @@ translator tcpsinfo_t < struct tcpcb *p > {
tcps_state = p == NULL ? -1 : p->t_state;
tcps_iss = p == NULL ? 0 : p->iss;
tcps_suna = p == NULL ? 0 : p->snd_una;
tcps_smax = p == NULL ? 0 : p->snd_max;
tcps_snxt = p == NULL ? 0 : p->snd_nxt;
tcps_rack = p == NULL ? 0 : p->last_ack_sent;
tcps_rnxt = p == NULL ? 0 : p->rcv_nxt;
tcps_swnd = p == NULL ? -1 : p->snd_wnd;
tcps_snd_ws = p == NULL ? -1 : p->snd_scale;
tcps_swl1 = p == NULL ? -1 : p->snd_wl1;
tcps_swl2 = p == NULL ? -1 : p->snd_wl2;
tcps_rwnd = p == NULL ? -1 : p->rcv_wnd;
tcps_rup = p == NULL ? -1 : p->rcv_up;
tcps_rcv_ws = p == NULL ? -1 : p->rcv_scale;
tcps_cwnd = p == NULL ? -1 : p->snd_cwnd;
tcps_cwnd_ssthresh = p == NULL ? -1 : p->snd_ssthresh;
@ -203,6 +212,8 @@ translator tcpsinfo_t < struct tcpcb *p > {
tcps_mss = p == NULL ? -1 : p->t_maxseg;
tcps_retransmit = p == NULL ? -1 : p->t_rxtshift > 0 ? 1 : 0;
tcps_srtt = p == NULL ? -1 : p->t_srtt; /* smoothed RTT in units of (TCP_RTT_SCALE*hz) */
tcps_debug = p == NULL ? 0 :
p->t_inpcb->inp_socket->so_options & 1;
};
#pragma D binding "1.6.3" translator
@ -242,3 +253,123 @@ translator tcpinfoh_t < struct tcphdr *p > {
translator tcplsinfo_t < int s > {
tcps_state = s;
};
/* Support for TCP debug */
#pragma D binding "1.12.1" TA_INPUT
inline int TA_INPUT = 0;
#pragma D binding "1.12.1" TA_OUTPUT
inline int TA_OUTPUT = 1;
#pragma D binding "1.12.1" TA_USER
inline int TA_USER = 2;
#pragma D binding "1.12.1" TA_RESPOND
inline int TA_RESPOND = 3;
#pragma D binding "1.12.1" TA_DROP
inline int TA_DROP = 4;
/* direction strings. */
#pragma D binding "1.12.1" tcpdebug_dir_string
inline string tcpdebug_dir_string[uint8_t direction] =
direction == TA_INPUT ? "input" :
direction == TA_OUTPUT ? "output" :
direction == TA_USER ? "user" :
direction == TA_RESPOND ? "respond" :
direction == TA_OUTPUT ? "drop" :
"unknown" ;
#pragma D binding "1.12.1" tcpflag_string
inline string tcpflag_string[uint8_t flags] =
flags & TH_FIN ? "FIN" :
flags & TH_SYN ? "SYN" :
flags & TH_RST ? "RST" :
flags & TH_PUSH ? "PUSH" :
flags & TH_ACK ? "ACK" :
flags & TH_URG ? "URG" :
flags & TH_ECE ? "ECE" :
flags & TH_CWR ? "CWR" :
"unknown" ;
#pragma D binding "1.12.1" PRU_ATTACH
inline int PRU_ATTACH = 0;
#pragma D binding "1.12.1" PRU_DETACH
inline int PRU_DETACH = 1;
#pragma D binding "1.12.1" PRU_BIND
inline int PRU_BIND = 2;
#pragma D binding "1.12.1" PRU_LISTEN
inline int PRU_LISTEN = 3;
#pragma D binding "1.12.1" PRU_CONNECT
inline int PRU_CONNECT = 4;
#pragma D binding "1.12.1" PRU_ACCEPT
inline int PRU_ACCEPT = 5 ;
#pragma D binding "1.12.1" PRU_DISCONNECT
inline int PRU_DISCONNECT= 6;
#pragma D binding "1.12.1" PRU_SHUTDOWN
inline int PRU_SHUTDOWN = 7;
#pragma D binding "1.12.1" PRU_RCVD
inline int PRU_RCVD = 8;
#pragma D binding "1.12.1" PRU_SEND
inline int PRU_SEND = 9;
#pragma D binding "1.12.1" PRU_ABORT
inline int PRU_ABORT = 10;
#pragma D binding "1.12.1" PRU_CONTROL
inline int PRU_CONTROL = 11;
#pragma D binding "1.12.1" PRU_SENSE
inline int PRU_SENSE = 12;
#pragma D binding "1.12.1" PRU_RCVOOB
inline int PRU_RCVOOB = 13;
#pragma D binding "1.12.1" PRU_SENDOOB
inline int PRU_SENDOOB = 14;
#pragma D binding "1.12.1" PRU_SOCKADDR
inline int PRU_SOCKADDR = 15;
#pragma D binding "1.12.1" PRU_PEERADDR
inline int PRU_PEERADDR = 16;
#pragma D binding "1.12.1" PRU_CONNECT2
inline int PRU_CONNECT2 = 17;
#pragma D binding "1.12.1" PRU_FASTTIMO
inline int PRU_FASTTIMO = 18;
#pragma D binding "1.12.1" PRU_SLOWTIMO
inline int PRU_SLOWTIMO = 19;
#pragma D binding "1.12.1" PRU_PROTORCV
inline int PRU_PROTORCV = 20;
#pragma D binding "1.12.1" PRU_PROTOSEND
inline int PRU_PROTOSEND = 21;
#pragma D binding "1.12.1" PRU_SEND_EOF
inline int PRU_SEND_EOF = 22;
#pragma D binding "1.12.1" PRU_SOSETLABEL
inline int PRU_SOSETLABEL = 23;
#pragma D binding "1.12.1" PRU_CLOSE
inline int PRU_CLOSE = 24;
#pragma D binding "1.12.1" PRU_FLUSH
inline int PRU_FLUSH = 25;
#pragma D binding "1.12.1" prureq_string
inline string prureq_string[uint8_t req] =
req == PRU_ATTACH ? "ATTACH" :
req == PRU_DETACH ? "DETACH" :
req == PRU_BIND ? "BIND" :
req == PRU_LISTEN ? "LISTEN" :
req == PRU_CONNECT ? "CONNECT" :
req == PRU_ACCEPT ? "ACCEPT" :
req == PRU_DISCONNECT ? "DISCONNECT" :
req == PRU_SHUTDOWN ? "SHUTDOWN" :
req == PRU_RCVD ? "RCVD" :
req == PRU_SEND ? "SEND" :
req == PRU_ABORT ? "ABORT" :
req == PRU_CONTROL ? "CONTROL" :
req == PRU_SENSE ? "SENSE" :
req == PRU_RCVOOB ? "RCVOOB" :
req == PRU_SENDOOB ? "SENDOOB" :
req == PRU_SOCKADDR ? "SOCKADDR" :
req == PRU_PEERADDR ? "PEERADDR" :
req == PRU_CONNECT2 ? "CONNECT2" :
req == PRU_FASTTIMO ? "FASTTIMO" :
req == PRU_SLOWTIMO ? "SLOWTIMO" :
req == PRU_PROTORCV ? "PROTORCV" :
req == PRU_PROTOSEND ? "PROTOSEND" :
req == PRU_SEND ? "SEND_EOF" :
req == PRU_SOSETLABEL ? "SOSETLABEL" :
req == PRU_CLOSE ? "CLOSE" :
req == PRU_FLUSH ? "FLUSE" :
"unknown" ;

165
share/dtrace/tcpdebug Executable file
View File

@ -0,0 +1,165 @@
#!/usr/sbin/dtrace -s
/*
* Copyright (c) 2015 George V. Neville-Neil
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
* The tcpdebug D script uses the tcp:kernel::debug tracepoints
* to replicate the action of turning on TCPDEBUG in a kernel configuration.
*
* A TCP debug statement shows a connection's
*
* direction: input, output, user, drop
* state: CLOSED, LISTEN, SYN_SENT, SYN_RCVD, ESTABLISHED,
* CLOSE_WAIT, FIN_WAIT_1, CLOSING, LAST_ACK, FIN_WAIT_2,TIME_WAIT
* sequence: sequence space
*
* congestion: rcv_nxt, rcv_wnd, rcv_up, snd_una, snd_nxt, snx_max,
* snd_wl1, snd_wl2, snd_wnd
*
* NOTE: Only sockets with SO_DEBUG set will be shown.
*
* Usage: tcpdebug
*/
#pragma D option quiet
tcp:kernel::debug-input
/args[0]->tcps_debug/
{
seq = args[1]->tcp_seq;
ack = args[1]->tcp_ack;
len = args[2]->ip_plength - sizeof(struct tcphdr);
flags = args[1]->tcp_flags;
printf("%p %s: input [%xu..%xu]", arg0,
tcp_state_string[args[0]->tcps_state], seq, seq + len);
printf("@%x, urp=%x", ack, args[1]->tcp_urgent);
printf("%s", flags != 0 ? "<" : "");
printf("%s", flags & TH_SYN ? "SYN," :"");
printf("%s", flags & TH_ACK ? "ACK," :"");
printf("%s", flags & TH_FIN ? "FIN," :"");
printf("%s", flags & TH_RST ? "RST," :"");
printf("%s", flags & TH_PUSH ? "PUSH," :"");
printf("%s", flags & TH_URG ? "URG," :"");
printf("%s", flags & TH_ECE ? "ECE," :"");
printf("%s", flags & TH_CWR ? "CWR" :"");
printf("%s", flags != 0 ? ">" : "");
printf("\n");
printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
args[0]->tcps_rnxt, args[0]->tcps_rwnd, args[0]->tcps_rup,
args[0]->tcps_suna, args[0]->tcps_snxt, args[0]->tcps_smax);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
args[0]->tcps_swl1, args[0]->tcps_swl2, args[0]->tcps_swnd);
}
tcp:kernel::debug-output
/args[0]->tcps_debug/
{
seq = args[1]->tcp_seq;
ack = args[1]->tcp_ack;
len = args[2]->ip_plength - 20;
printf("%p %s: output [%x..%x]", arg0,
tcp_state_string[args[0]->tcps_state], seq, seq + len);
printf("@%x, urp=%x", ack, args[1]->tcp_urgent);
printf("%s", flags != 0 ? "<" : "");
printf("%s", flags & TH_SYN ? "SYN," :"");
printf("%s", flags & TH_ACK ? "ACK," :"");
printf("%s", flags & TH_FIN ? "FIN," :"");
printf("%s", flags & TH_RST ? "RST," :"");
printf("%s", flags & TH_PUSH ? "PUSH," :"");
printf("%s", flags & TH_URG ? "URG," :"");
printf("%s", flags & TH_ECE ? "ECE," :"");
printf("%s", flags & TH_CWR ? "CWR" :"");
printf("%s", flags != 0 ? ">" : "");
printf("\n");
printf("\trcv_(nxt,wnd,up) (%u,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
args[0]->tcps_rnxt, args[0]->tcps_rwnd, args[0]->tcps_rup,
args[0]->tcps_suna, args[0]->tcps_snxt, args[0]->tcps_smax);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
args[0]->tcps_swl1, args[0]->tcps_swl2, args[0]->tcps_swnd);
}
tcp:kernel::debug-drop
/args[0]->tcps_debug/
{
printf("%p %s: output [x..x] @%x, urp=%x\n", arg0,
tcp_state_string[args[0]->tcps_state],
args[1]->tcp_ack,
args[1]->tcp_urgent);
seq = args[1]->tcp_seq;
ack = args[1]->tcp_ack;
len = args[2]->ip_plength;
printf("%p %s: drop [%x..%x]", arg0,
tcp_state_string[args[0]->tcps_state], seq, seq + len);
printf("@%x, urp=%x", ack, args[1]->tcp_urgent);
printf("%s", flags != 0 ? "<" : "");
printf("%s", flags & TH_SYN ? "SYN," :"");
printf("%s", flags & TH_ACK ? "ACK," :"");
printf("%s", flags & TH_FIN ? "FIN," :"");
printf("%s", flags & TH_RST ? "RST," :"");
printf("%s", flags & TH_PUSH ? "PUSH," :"");
printf("%s", flags & TH_URG ? "URG," :"");
printf("%s", flags & TH_ECE ? "ECE," :"");
printf("%s", flags & TH_CWR ? "CWR" :"");
printf("%s", flags != 0 ? ">" : "");
printf("\n");
printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
args[0]->tcps_rnxt, args[0]->tcps_rwnd, args[0]->tcps_rup,
args[0]->tcps_suna, args[0]->tcps_snxt, args[0]->tcps_smax);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
args[0]->tcps_swl1, args[0]->tcps_swl2, args[0]->tcps_swnd);
}
tcp:kernel::debug-user
/args[0]->tcps_debug/
{
printf("%p %s: user ", arg0,
tcp_state_string[args[0]->tcps_state]);
printf("%s", prureq_string[arg1]);
printf("\n");
printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
args[0]->tcps_rnxt, args[0]->tcps_rwnd, args[0]->tcps_rup,
args[0]->tcps_suna, args[0]->tcps_snxt, args[0]->tcps_smax);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
args[0]->tcps_swl1, args[0]->tcps_swl2, args[0]->tcps_swnd);
}

19
sys/netinet/in_kdtrace.c
View File

@ -105,6 +105,25 @@ SDT_PROBE_DEFINE5_XLATE(tcp, , , send,
SDT_PROBE_DEFINE1_XLATE(tcp, , , siftr,
"struct pkt_node *", "siftrinfo_t *");
SDT_PROBE_DEFINE3_XLATE(tcp, , , debug__input,
"struct tcpcb *", "tcpsinfo_t *" ,
"struct tcphdr *", "tcpinfo_t *",
"uint8_t *", "ipinfo_t *");
SDT_PROBE_DEFINE3_XLATE(tcp, , , debug__output,
"struct tcpcb *", "tcpsinfo_t *" ,
"struct tcphdr *", "tcpinfo_t *",
"uint8_t *", "ipinfo_t *");
SDT_PROBE_DEFINE2_XLATE(tcp, , , debug__user,
"struct tcpcb *", "tcpsinfo_t *" ,
"int", "int");
SDT_PROBE_DEFINE3_XLATE(tcp, , , debug__drop,
"struct tcpcb *", "tcpsinfo_t *" ,
"struct tcphdr *", "tcpinfo_t *",
"uint8_t *", "ipinfo_t *")
SDT_PROBE_DEFINE6_XLATE(tcp, , , state__change,
"void *", "void *",
"struct tcpcb *", "csinfo_t *",

10
sys/netinet/in_kdtrace.h
View File

@ -34,6 +34,12 @@
SDT_PROBE5(udp, , , probe, arg0, arg1, arg2, arg3, arg4)
#define TCP_PROBE1(probe, arg0) \
SDT_PROBE1(tcp, , , probe, arg0)
#define TCP_PROBE2(probe, arg0, arg1) \
SDT_PROBE2(tcp, , , probe, arg0, arg1)
#define TCP_PROBE3(probe, arg0, arg1, arg2) \
SDT_PROBE3(tcp, , , probe, arg0, arg1, arg2)
#define TCP_PROBE4(probe, arg0, arg1, arg2, arg3) \
SDT_PROBE4(tcp, , , probe, arg0, arg1, arg2, arg3)
#define TCP_PROBE5(probe, arg0, arg1, arg2, arg3, arg4) \
SDT_PROBE5(tcp, , , probe, arg0, arg1, arg2, arg3, arg4)
#define TCP_PROBE6(probe, arg0, arg1, arg2, arg3, arg4, arg5) \
@ -55,6 +61,10 @@ SDT_PROBE_DECLARE(tcp, , , receive);
SDT_PROBE_DECLARE(tcp, , , send);
SDT_PROBE_DECLARE(tcp, , , siftr);
SDT_PROBE_DECLARE(tcp, , , state__change);
SDT_PROBE_DECLARE(tcp, , , debug__input);
SDT_PROBE_DECLARE(tcp, , , debug__output);
SDT_PROBE_DECLARE(tcp, , , debug__user);
SDT_PROBE_DECLARE(tcp, , , debug__drop);
SDT_PROBE_DECLARE(udp, , , receive);
SDT_PROBE_DECLARE(udp, , , send);

8
sys/netinet/tcp_input.c
View File

@ -1377,6 +1377,7 @@ tcp_input(struct mbuf **mp, int *offp, int proto)
tcp_trace(TA_INPUT, ostate, tp,
(void *)tcp_saveipgen, &tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
tcp_dooptions(&to, optp, optlen, TO_SYN);
syncache_add(&inc, &to, th, inp, &so, m, NULL, NULL);
/*
@ -1779,6 +1780,8 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
(void *)tcp_saveipgen,
&tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th,
mtod(m, const char *));
if (tp->snd_una == tp->snd_max)
tcp_timer_activate(tp, TT_REXMT, 0);
else if (!tcp_timer_active(tp, TT_PERSIST))
@ -1825,6 +1828,8 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
tcp_trace(TA_INPUT, ostate, tp,
(void *)tcp_saveipgen, &tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
/*
* Automatic sizing of receive socket buffer. Often the send
* buffer size is not optimally adjusted to the actual network
@ -3022,6 +3027,7 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
tcp_trace(TA_INPUT, ostate, tp, (void *)tcp_saveipgen,
&tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
/*
* Return any desired output.
@ -3069,6 +3075,7 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
tcp_trace(TA_DROP, ostate, tp, (void *)tcp_saveipgen,
&tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
if (ti_locked == TI_RLOCKED)
INP_INFO_RUNLOCK(&V_tcbinfo);
ti_locked = TI_UNLOCKED;
@ -3109,6 +3116,7 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so,
tcp_trace(TA_DROP, ostate, tp, (void *)tcp_saveipgen,
&tcp_savetcp, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
if (tp != NULL)
INP_WUNLOCK(tp->t_inpcb);
m_freem(m);

1
sys/netinet/tcp_output.c
View File

@ -1253,6 +1253,7 @@ tcp_output(struct tcpcb *tp)
ipov->ih_len = save;
}
#endif /* TCPDEBUG */
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
/*
* Fill in IP length and desired time to live and

1
sys/netinet/tcp_subr.c
View File

@ -720,6 +720,7 @@ tcp_respond(struct tcpcb *tp, void *ipgen, struct tcphdr *th, struct mbuf *m,
if (tp == NULL || (inp->inp_socket->so_options & SO_DEBUG))
tcp_trace(TA_OUTPUT, 0, tp, mtod(m, void *), th, 0);
#endif
TCP_PROBE3(debug__input, tp, th, mtod(m, const char *));
if (flags & TH_RST)
TCP_PROBE5(accept__refused, NULL, NULL, mtod(m, const char *),
tp, nth);

7
sys/netinet/tcp_timer.c
View File

@ -57,6 +57,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/cc.h>
#include <netinet/in.h>
#include <netinet/in_kdtrace.h>
#include <netinet/in_pcb.h>
#include <netinet/in_rss.h>
#include <netinet/in_systm.h>
@ -369,6 +370,8 @@ tcp_timer_2msl(void *xtp)
tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,
PRU_SLOWTIMO);
#endif
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
if (tp != NULL)
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
@ -454,6 +457,7 @@ tcp_timer_keep(void *xtp)
tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,
PRU_SLOWTIMO);
#endif
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
CURVNET_RESTORE();
@ -468,6 +472,7 @@ tcp_timer_keep(void *xtp)
tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,
PRU_SLOWTIMO);
#endif
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
if (tp != NULL)
INP_WUNLOCK(tp->t_inpcb);
INP_INFO_RUNLOCK(&V_tcbinfo);
@ -546,6 +551,7 @@ tcp_timer_persist(void *xtp)
if (tp != NULL && tp->t_inpcb->inp_socket->so_options & SO_DEBUG)
tcp_trace(TA_USER, ostate, tp, NULL, NULL, PRU_SLOWTIMO);
#endif
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
if (tp != NULL)
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
@ -792,6 +798,7 @@ tcp_timer_rexmt(void * xtp)
tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,
PRU_SLOWTIMO);
#endif
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
if (tp != NULL)
INP_WUNLOCK(inp);
if (headlocked)

17
sys/netinet/tcp_usrreq.c
View File

@ -70,6 +70,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/cc.h>
#include <netinet/in.h>
#include <netinet/in_kdtrace.h>
#include <netinet/in_pcb.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
@ -146,6 +147,7 @@ tcp_usr_attach(struct socket *so, int proto, struct thread *td)
tp = intotcpcb(inp);
out:
TCPDEBUG2(PRU_ATTACH);
TCP_PROBE2(debug__user, tp, PRU_ATTACH);
return error;
}
@ -295,6 +297,7 @@ tcp_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
INP_HASH_WUNLOCK(&V_tcbinfo);
out:
TCPDEBUG2(PRU_BIND);
TCP_PROBE2(debug__user, tp, PRU_BIND);
INP_WUNLOCK(inp);
return (error);
@ -355,6 +358,7 @@ tcp6_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
INP_HASH_WUNLOCK(&V_tcbinfo);
out:
TCPDEBUG2(PRU_BIND);
TCP_PROBE2(debug__user, tp, PRU_BIND);
INP_WUNLOCK(inp);
return (error);
}
@ -399,6 +403,7 @@ tcp_usr_listen(struct socket *so, int backlog, struct thread *td)
out:
TCPDEBUG2(PRU_LISTEN);
TCP_PROBE2(debug__user, tp, PRU_LISTEN);
INP_WUNLOCK(inp);
return (error);
}
@ -444,6 +449,7 @@ tcp6_usr_listen(struct socket *so, int backlog, struct thread *td)
out:
TCPDEBUG2(PRU_LISTEN);
TCP_PROBE2(debug__user, tp, PRU_LISTEN);
INP_WUNLOCK(inp);
return (error);
}
@ -592,6 +598,7 @@ tcp6_usr_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
out:
TCPDEBUG2(PRU_CONNECT);
TCP_PROBE2(debug__user, tp, PRU_CONNECT);
INP_WUNLOCK(inp);
return (error);
}
@ -631,6 +638,7 @@ tcp_usr_disconnect(struct socket *so)
tcp_disconnect(tp);
out:
TCPDEBUG2(PRU_DISCONNECT);
TCP_PROBE2(debug__user, tp, PRU_DISCONNECT);
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
return (error);
@ -674,6 +682,7 @@ tcp_usr_accept(struct socket *so, struct sockaddr **nam)
out:
TCPDEBUG2(PRU_ACCEPT);
TCP_PROBE2(debug__user, tp, PRU_ACCEPT);
INP_WUNLOCK(inp);
if (error == 0)
*nam = in_sockaddr(port, &addr);
@ -724,6 +733,7 @@ tcp6_usr_accept(struct socket *so, struct sockaddr **nam)
out:
TCPDEBUG2(PRU_ACCEPT);
TCP_PROBE2(debug__user, tp, PRU_ACCEPT);
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
if (error == 0) {
@ -764,6 +774,7 @@ tcp_usr_shutdown(struct socket *so)
out:
TCPDEBUG2(PRU_SHUTDOWN);
TCP_PROBE2(debug__user, tp, PRU_SHUTDOWN);
INP_WUNLOCK(inp);
INP_INFO_RUNLOCK(&V_tcbinfo);
@ -799,6 +810,7 @@ tcp_usr_rcvd(struct socket *so, int flags)
out:
TCPDEBUG2(PRU_RCVD);
TCP_PROBE2(debug__user, tp, PRU_RCVD);
INP_WUNLOCK(inp);
return (error);
}
@ -953,6 +965,8 @@ tcp_usr_send(struct socket *so, int flags, struct mbuf *m,
out:
TCPDEBUG2((flags & PRUS_OOB) ? PRU_SENDOOB :
((flags & PRUS_EOF) ? PRU_SEND_EOF : PRU_SEND));
TCP_PROBE2(debug__user, tp, (flags & PRUS_OOB) ? PRU_SENDOOB :
((flags & PRUS_EOF) ? PRU_SEND_EOF : PRU_SEND));
INP_WUNLOCK(inp);
if (flags & PRUS_EOF)
INP_INFO_RUNLOCK(&V_tcbinfo);
@ -1013,6 +1027,7 @@ tcp_usr_abort(struct socket *so)
TCPDEBUG1();
tcp_drop(tp, ECONNABORTED);
TCPDEBUG2(PRU_ABORT);
TCP_PROBE2(debug__user, tp, PRU_ABORT);
}
if (!(inp->inp_flags & INP_DROPPED)) {
SOCK_LOCK(so);
@ -1052,6 +1067,7 @@ tcp_usr_close(struct socket *so)
TCPDEBUG1();
tcp_disconnect(tp);
TCPDEBUG2(PRU_CLOSE);
TCP_PROBE2(debug__user, tp, PRU_CLOSE);
}
if (!(inp->inp_flags & INP_DROPPED)) {
SOCK_LOCK(so);
@ -1101,6 +1117,7 @@ tcp_usr_rcvoob(struct socket *so, struct mbuf *m, int flags)
out:
TCPDEBUG2(PRU_RCVOOB);
TCP_PROBE2(debug__user, tp, PRU_RCVOOB);
INP_WUNLOCK(inp);
return (error);
}