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Add test program for windowing, implement proper windowing

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git-svn-id: https://origsvn.digium.com/svn/libpri/trunk@79 2fbb986a-6c06-0410-b554-c9c1f0a7f128
This commit is contained in:
Mark Spencer 2004-03-29 08:09:01 +00:00
parent d00abddee3
commit 91b4a60c1f
7 changed files with 291 additions and 9 deletions
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9
Makefile
View File

@ -28,6 +28,7 @@
#LIBPRI_COUNTERS=-DLIBPRI_COUNTERS
TOBJS=testpri.o
T2OBJS=testprilib.o
STATIC_LIBRARY=libpri.a
DYNAMIC_LIBRARY=libpri.so.1.0
STATIC_OBJS=pri.o q921.o prisched.o q931.o
@ -60,6 +61,12 @@ uninstall:
pritest: pritest.o
$(CC) -o pritest pritest.o -L. -lpri -lzap
testprilib.o: testprilib.c
$(CC) $(CFLAGS) -D_REENTRANT -D_GNU_SOURCE -o $@ -c $<
testprilib: testprilib.o
$(CC) -o testprilib testprilib.o -L. -lpri -lpthread
pridump: pridump.o
$(CC) -o pridump pridump.o -L. -lpri -lzap
@ -77,5 +84,5 @@ $(DYNAMIC_LIBRARY): $(DYNAMIC_OBJS)
clean:
rm -f *.o *.so *.lo *.so.1 *.so.1.0
rm -f testpri $(STATIC_LIBRARY) $(DYNAMIC_LIBRARY)
rm -f testpri testprilib $(STATIC_LIBRARY) $(DYNAMIC_LIBRARY)
rm -f pritest pridump

3
libpri.h
View File

@ -390,4 +390,7 @@ extern void pri_set_overlapdial(struct pri *pri,int state);
#define PRI_DUMP_INFO
extern void pri_dump_info(struct pri *pri);
/* Get file descriptor */
extern int pri_fd(struct pri *pri);
#endif

9
pri.c
View File

@ -72,8 +72,8 @@ struct pri *pri_new(int fd, int node, int switchtype)
p->q931_rxcount = 0;
p->q931_txcount = 0;
#endif
/* Start Q.921 layer */
q921_start(p, 1);
/* Start Q.921 layer, Wait if we're the network */
q921_start(p, p->localtype == PRI_CPE);
}
return p;
}
@ -338,6 +338,11 @@ void pri_set_overlapdial(struct pri *pri,int state)
pri->overlapdial = state;
}
int pri_fd(struct pri *pri)
{
return pri->fd;
}
void pri_dump_info(struct pri *pri)
{
#ifdef LIBPRI_COUNTERS

1
pri_internal.h
View File

@ -52,6 +52,7 @@ struct pri {
/* Q.921 State */
int q921_state;
int window; /* Max window size */
int windowlen; /* Fullness of window */
int v_s; /* Next N(S) for transmission */
int v_a; /* Last acknowledged frame */
int v_r; /* Next frame expected to be received */

1
pri_q921.h
View File

@ -134,6 +134,7 @@ typedef union {
typedef struct q921_frame {
struct q921_frame *next; /* Next in list */
int len; /* Length of header + body */
int transmitted; /* Have we been transmitted */
q921_i h;
} q921_frame;

43
q921.c
View File

@ -170,6 +170,22 @@ static int q921_ack_packet(struct pri *pri, int num)
free(f);
/* Reset retransmission counter if we actually acked something */
pri->retrans = 0;
/* Decrement window size */
pri->windowlen--;
/* Search for something to send */
f = pri->txqueue;
while(f) {
if (!f->transmitted) {
/* Send it now... */
if (pri->debug & PRI_DEBUG_Q921_STATE)
pri_message("-- Finally transmitting %d, since window opened up\n", f->h.n_s);
f->transmitted++;
pri->windowlen++;
q921_transmit(pri, (q921_h *)(&f->h), f->len);
break;
}
f = f->next;
}
return 1;
}
prev = f;
@ -319,8 +335,11 @@ static void t200_expire(void *vpri)
pri_message("-- Retransmitting %d bytes\n", pri->txqueue->len);
if (pri->busy)
q921_rr(pri, 1, 0);
else
else {
if (!pri->txqueue->transmitted)
pri_error("!! Not good - head of queue has not been transmitted yet\n");
q921_transmit(pri, (q921_h *)&pri->txqueue->h, pri->txqueue->len);
}
if (pri->debug & PRI_DEBUG_Q921_STATE)
pri_message("-- Rescheduling retransmission (%d)\n", pri->retrans);
pri->t200_timer = pri_schedule_event(pri, T_200, t200_expire, pri);
@ -362,6 +381,7 @@ int q921_transmit_iframe(struct pri *pri, void *buf, int len, int cr)
break;
}
f->next = NULL;
f->transmitted = 0;
f->len = len + 4;
memcpy(f->h.data, buf, len);
f->h.n_s = pri->v_s;
@ -374,9 +394,18 @@ int q921_transmit_iframe(struct pri *pri, void *buf, int len, int cr)
prev->next = f;
else
pri->txqueue = f;
/* Immediately transmit unless we're in a recovery state */
/* Immediately transmit unless we're in a recovery state, or the window
size is too big */
if (!pri->retrans && !pri->busy) {
q921_transmit(pri, (q921_h *)(&f->h), f->len);
if (pri->windowlen < pri->window) {
pri->windowlen++;
q921_transmit(pri, (q921_h *)(&f->h), f->len);
f->transmitted++;
} else {
if (pri->debug & PRI_DEBUG_Q921_STATE)
pri_message("Delaying transmission of %d, window is %d/%d long\n",
f->h.n_s, pri->windowlen, pri->window);
}
}
if (pri->t203_timer) {
if (pri->debug & PRI_DEBUG_Q921_STATE)
@ -468,7 +497,7 @@ void q921_dump(q921_h *h, int len, int showraw, int txrx)
pri_message("\n%c [", direction_tag);
for (x=0;x<len;x++)
pri_message("%02x ",h->raw[x]);
pri_message("]");
pri_message("]\n");
}
switch (h->h.data[0] & Q921_FRAMETYPE_MASK) {
@ -627,6 +656,7 @@ void q921_reset(struct pri *pri)
pri->v_r = 0;
pri->v_na = 0;
pri->window = 7;
pri->windowlen = 0;
pri_schedule_del(pri, pri->sabme_timer);
pri_schedule_del(pri, pri->t203_timer);
pri_schedule_del(pri, pri->t200_timer);
@ -731,8 +761,9 @@ static pri_event *__q921_receive(struct pri *pri, q921_h *h, int len)
sendnow = 0;
/* Resend the proper I-frame */
for(f=pri->txqueue;f;f=f->next) {
if (sendnow || (f->h.n_s == h->s.n_r)) {
/* Matches the request, or follows in our window */
if ((sendnow || (f->h.n_s == h->s.n_r)) && f->transmitted) {
/* Matches the request, or follows in our window, and has
already been transmitted. */
sendnow = 1;
pri_error("!! Got reject for frame %d, retransmitting frame %d now, updating n_r!\n", h->s.n_r, f->h.n_s);
f->h.n_r = pri->v_r;

234
testprilib.c Executable file
View File

@ -0,0 +1,234 @@
/*
* libpri: An implementation of Primary Rate ISDN
*
* Written by Mark Spencer <markster@linux-support.net>
*
* Copyright (C) 2001, Linux Support Services, Inc.
* All Rights Reserved.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* This program tests libpri call reception using a zaptel interface.
* Its state machines are setup for RECEIVING CALLS ONLY, so if you
* are trying to both place and receive calls you have to a bit more.
*/
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/signal.h>
#include <sys/select.h>
#include <sys/wait.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <linux/zaptel.h>
#include <zap.h>
#include <pthread.h>
#include <sys/select.h>
#include "libpri.h"
#define DEBUG_LEVEL PRI_DEBUG_ALL
#define PRI_DEF_NODETYPE PRI_CPE
#define PRI_DEF_SWITCHTYPE PRI_SWITCH_NI2
static struct pri *first, *cur;
static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
#define TEST_CALLS 32
static void event1(struct pri *pri, pri_event *e)
{
/* Network */
int x;
static q931_call *calls[TEST_CALLS];
char name[256], num[256], dest[256];
switch(e->gen.e) {
case PRI_EVENT_DCHAN_UP:
printf("Network is up. Sending blast of calls!\n");
for (x=0;x<TEST_CALLS;x++) {
sprintf(name, "Caller %d", x + 1);
sprintf(num, "25642860%02d", x+1);
sprintf(dest, "60%02d", x + 1);
if (!(calls[x] = pri_new_call(pri))) {
perror("pri_new_call");
} else if (pri_call(pri, calls[x], PRI_TRANS_CAP_DIGITAL, x + 1, 1, 1, num,
PRI_NATIONAL_ISDN, name, PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN,
dest, PRI_NATIONAL_ISDN, PRI_LAYER_1_ULAW)) {
perror("pri_call");
}
}
printf("Setup %d calls!\n", TEST_CALLS);
break;
default:
printf("PRI 1: %s (%d)\n", pri_event2str(e->gen.e), e->gen.e);
}
}
static void event2(struct pri *pri, pri_event *e)
{
/* CPE */
switch(e->gen.e) {
case PRI_EVENT_DCHAN_UP:
default:
printf("PRI 2: %s (%d)\n", pri_event2str(e->gen.e), e->gen.e);
}
}
static void testmsg(char *s)
{
char *c;
static int keeplast = 0;
do {
c = strchr(s, '\n');
if (c) {
*c = '\0';
c++;
}
if (keeplast)
printf("%s", s);
else if (cur == first)
printf("-1 %s", s);
else
printf("-2 %s", s);
if (c)
printf("\n");
s = c;
} while(c && *c);
if (!c)
keeplast = 1;
else
keeplast = 0;
}
static void testerr(char *s)
{
char *c;
static int keeplast = 0;
do {
c = strchr(s, '\n');
if (c) {
*c = '\0';
c++;
}
if (keeplast)
printf("%s", s);
else if (cur == first)
printf("=1 %s", s);
else
printf("=2 %s", s);
if (c)
printf("\n");
s = c;
} while(c && *c);
if (!c)
keeplast = 1;
else
keeplast = 0;
}
static void *dchan(void *data)
{
/* Joint D-channel */
struct pri *pri = data;
struct timeval *next, tv;
pri_event *e;
fd_set fds;
int res;
for(;;) {
if (next == pri_schedule_next(pri)) {
gettimeofday(&tv, NULL);
tv.tv_sec = next->tv_sec - tv.tv_sec;
tv.tv_usec = next->tv_usec - tv.tv_usec;
if (tv.tv_usec < 0) {
tv.tv_usec += 1000000;
tv.tv_sec -= 1;
}
if (tv.tv_sec < 0) {
tv.tv_sec = 0;
tv.tv_usec = 0;
}
}
FD_ZERO(&fds);
FD_SET(pri_fd(pri), &fds);
res = select(pri_fd(pri) + 1, &fds, NULL, NULL, next ? &tv : NULL);
pthread_mutex_lock(&lock);
cur = pri;
if (res < 0) {
perror("select");
} else if (!res) {
e = pri_schedule_run(pri);
} else {
e = pri_check_event(pri);
}
if (e) {
if (first == pri) {
event1(pri, e);
} else {
event2(pri, e);
}
}
pthread_mutex_unlock(&lock);
}
return NULL;
}
int main(int argc, char *argv[])
{
int pair[2];
pthread_t tmp;
struct pri *pri;
pri_set_message(testmsg);
pri_set_error(testerr);
if (socketpair(AF_LOCAL, SOCK_DGRAM, 0, pair)) {
perror("socketpair");
exit(1);
}
if (!(pri = pri_new(pair[0], PRI_NETWORK, PRI_DEF_SWITCHTYPE))) {
perror("pri(0)");
exit(1);
}
first = pri;
pri_set_debug(pri, DEBUG_LEVEL);
if (pthread_create(&tmp, NULL, dchan, pri)) {
perror("thread(0)");
exit(1);
}
if (!(pri = pri_new(pair[1], PRI_CPE, PRI_DEF_SWITCHTYPE))) {
perror("pri(1)");
exit(1);
}
pri_set_debug(pri, DEBUG_LEVEL);
if (pthread_create(&tmp, NULL, dchan, pri)) {
perror("thread(1)");
exit(1);
}
/* Wait for things to run */
sleep(5);
exit(0);
}