mirror of
https://github.com/vincentmli/bpfire.git
synced 2026-04-25 18:32:57 +02:00
br2684ctl...
git-svn-id: http://svn.ipfire.org/svn/ipfire/trunk@957 ea5c0bd1-69bd-2848-81d8-4f18e57aeed8
This commit is contained in:
ms
271
src/br2684ctl/br2684ctl.c
Normal file
271
src/br2684ctl/br2684ctl.c
Normal file
@@ -0,0 +1,271 @@
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <errno.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <string.h>
|
||||
#include <syslog.h>
|
||||
#include <atm.h>
|
||||
#include <linux/atmdev.h>
|
||||
#include <linux/atmbr2684.h>
|
||||
|
||||
/* Written by Marcell GAL <cell@sch.bme.hu> to make use of the */
|
||||
/* ioctls defined in the br2684... kernel patch */
|
||||
/* Compile with cc -o br2684ctl br2684ctl.c -latm */
|
||||
|
||||
/*
|
||||
Modified feb 2001 by Stephen Aaskov (saa@lasat.com)
|
||||
- Added daemonization code
|
||||
- Added syslog
|
||||
|
||||
TODO: Delete interfaces after exit?
|
||||
*/
|
||||
|
||||
|
||||
#define LOG_NAME "RFC1483/2684 bridge"
|
||||
#define LOG_OPTION LOG_PERROR
|
||||
#define LOG_FACILITY LOG_LOCAL0
|
||||
|
||||
|
||||
int lastsock, lastitf;
|
||||
|
||||
|
||||
void fatal(const char *str, int i)
|
||||
{
|
||||
syslog (LOG_ERR,"Fatal: %s",str);
|
||||
exit(-2);
|
||||
};
|
||||
|
||||
|
||||
void exitFunc(void)
|
||||
{
|
||||
syslog (LOG_PID,"Daemon terminated\n");
|
||||
}
|
||||
|
||||
|
||||
int create_pidfile(int num)
|
||||
{
|
||||
FILE *pidfile = NULL;
|
||||
char name[32];
|
||||
|
||||
if (num < 0) return -1;
|
||||
|
||||
snprintf(name, 20, "/var/run/nas%d.pid", num);
|
||||
pidfile = fopen(name, "w");
|
||||
if (pidfile == NULL) return -1;
|
||||
fprintf(pidfile, "%d", getpid());
|
||||
fclose(pidfile);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int create_br(char *nstr)
|
||||
{
|
||||
int num, err;
|
||||
|
||||
if(lastsock<0) {
|
||||
lastsock = socket(PF_ATMPVC, SOCK_DGRAM, ATM_AAL5);
|
||||
}
|
||||
if (lastsock<0) {
|
||||
syslog(LOG_ERR, "socket creation failed: %s",strerror(errno));
|
||||
} else {
|
||||
/* create the device with ioctl: */
|
||||
num=atoi(nstr);
|
||||
if( num>=0 && num<1234567890){
|
||||
struct atm_newif_br2684 ni;
|
||||
ni.backend_num = ATM_BACKEND_BR2684;
|
||||
ni.media = BR2684_MEDIA_ETHERNET;
|
||||
ni.mtu = 1500;
|
||||
sprintf(ni.ifname, "nas%d", num);
|
||||
err=ioctl (lastsock, ATM_NEWBACKENDIF, &ni);
|
||||
|
||||
if (err == 0)
|
||||
syslog(LOG_INFO, "Interface \"%s\" created sucessfully\n",ni.ifname);
|
||||
else
|
||||
syslog(LOG_INFO, "Interface \"%s\" could not be created, reason: %s\n",
|
||||
ni.ifname,
|
||||
strerror(errno));
|
||||
lastitf=num; /* even if we didn't create, because existed, assign_vcc wil want to know it! */
|
||||
} else {
|
||||
syslog(LOG_ERR,"err: strange interface number %d", num );
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int assign_vcc(char *astr, int encap, int bufsize, struct atm_qos qos)
|
||||
{
|
||||
int err;
|
||||
struct sockaddr_atmpvc addr;
|
||||
int fd;
|
||||
struct atm_backend_br2684 be;
|
||||
|
||||
memset(&addr, 0, sizeof(addr));
|
||||
err=text2atm(astr,(struct sockaddr *)(&addr), sizeof(addr), T2A_PVC);
|
||||
if (err!=0)
|
||||
syslog(LOG_ERR,"Could not parse ATM parameters (error=%d)\n",err);
|
||||
|
||||
#if 0
|
||||
addr.sap_family = AF_ATMPVC;
|
||||
addr.sap_addr.itf = itf;
|
||||
addr.sap_addr.vpi = 0;
|
||||
addr.sap_addr.vci = vci;
|
||||
#endif
|
||||
syslog(LOG_INFO,"Communicating over ATM %d.%d.%d, encapsulation: %s\n", addr.sap_addr.itf,
|
||||
addr.sap_addr.vpi,
|
||||
addr.sap_addr.vci,
|
||||
encap?"VC mux":"LLC");
|
||||
|
||||
if ((fd = socket(PF_ATMPVC, SOCK_DGRAM, ATM_AAL5)) < 0)
|
||||
syslog(LOG_ERR,"failed to create socket %d, reason: %s", errno,strerror(errno));
|
||||
|
||||
if (qos.aal == 0) {
|
||||
qos.aal = ATM_AAL5;
|
||||
qos.txtp.traffic_class = ATM_UBR;
|
||||
qos.txtp.max_sdu = 1524;
|
||||
qos.txtp.pcr = ATM_MAX_PCR;
|
||||
qos.rxtp = qos.txtp;
|
||||
}
|
||||
|
||||
if ( (err=setsockopt(fd,SOL_SOCKET,SO_SNDBUF, &bufsize ,sizeof(bufsize))) )
|
||||
syslog(LOG_ERR,"setsockopt SO_SNDBUF: (%d) %s\n",err, strerror(err));
|
||||
|
||||
if (setsockopt(fd, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0)
|
||||
syslog(LOG_ERR,"setsockopt SO_ATMQOS %d", errno);
|
||||
|
||||
err = connect(fd, (struct sockaddr*)&addr, sizeof(struct sockaddr_atmpvc));
|
||||
|
||||
if (err < 0)
|
||||
fatal("failed to connect on socket", err);
|
||||
|
||||
/* attach the vcc to device: */
|
||||
|
||||
be.backend_num = ATM_BACKEND_BR2684;
|
||||
be.ifspec.method = BR2684_FIND_BYIFNAME;
|
||||
sprintf(be.ifspec.spec.ifname, "nas%d", lastitf);
|
||||
be.fcs_in = BR2684_FCSIN_NO;
|
||||
be.fcs_out = BR2684_FCSOUT_NO;
|
||||
be.fcs_auto = 0;
|
||||
be.encaps = encap ? BR2684_ENCAPS_VC : BR2684_ENCAPS_LLC;
|
||||
be.has_vpiid = 0;
|
||||
be.send_padding = 0;
|
||||
be.min_size = 0;
|
||||
err=ioctl (fd, ATM_SETBACKEND, &be);
|
||||
if (err == 0)
|
||||
syslog (LOG_INFO,"Interface configured");
|
||||
else {
|
||||
syslog (LOG_ERR,"Could not configure interface:%s",strerror(errno));
|
||||
exit(2);
|
||||
}
|
||||
return fd ;
|
||||
}
|
||||
|
||||
|
||||
void usage(char *s)
|
||||
{
|
||||
printf("usage: %s [-b] [[-c number] [-e 0|1] [-s sndbuf] [-q qos] [-a [itf.]vpi.vci]*]*\n", s);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
||||
|
||||
int main (int argc, char **argv)
|
||||
{
|
||||
int c, background=0, encap=0, sndbuf=8192;
|
||||
struct atm_qos reqqos;
|
||||
int itfnum;
|
||||
lastsock=-1;
|
||||
lastitf=0;
|
||||
|
||||
/* st qos to 0 */
|
||||
memset(&reqqos, 0, sizeof(reqqos));
|
||||
|
||||
openlog (LOG_NAME,LOG_OPTION,LOG_FACILITY);
|
||||
if (argc>1)
|
||||
while ((c = getopt(argc, argv,"q:a:bc:e:s:?h")) !=EOF)
|
||||
switch (c) {
|
||||
case 'q':
|
||||
printf ("optarg : %s",optarg);
|
||||
if (text2qos(optarg,&reqqos,0)) fprintf(stderr,"QOS parameter invalid\n");
|
||||
break;
|
||||
case 'a':
|
||||
assign_vcc(optarg, encap, sndbuf, reqqos);
|
||||
break;
|
||||
case 'b':
|
||||
background=1;
|
||||
break;
|
||||
case 'c':
|
||||
create_br(optarg);
|
||||
itfnum = atoi(optarg);
|
||||
break;
|
||||
case 'e':
|
||||
encap=(atoi(optarg));
|
||||
if(encap<0){
|
||||
syslog (LOG_ERR, "invalid encapsulation: %s:\n",optarg);
|
||||
encap=0;
|
||||
}
|
||||
break;
|
||||
case 's':
|
||||
sndbuf=(atoi(optarg));
|
||||
if(sndbuf<0){
|
||||
syslog(LOG_ERR, "Invalid sndbuf: %s, using size of 8192 instead\n",optarg);
|
||||
sndbuf=8192;
|
||||
}
|
||||
break;
|
||||
case '?':
|
||||
case 'h':
|
||||
default:
|
||||
usage(argv[0]);
|
||||
}
|
||||
else
|
||||
usage(argv[0]);
|
||||
|
||||
if (argc != optind) usage(argv[0]);
|
||||
|
||||
if(lastsock>=0) close(lastsock);
|
||||
|
||||
if (background) {
|
||||
pid_t pid;
|
||||
|
||||
pid=fork();
|
||||
if (pid < 0) {
|
||||
fprintf(stderr,"Error detaching\n");
|
||||
exit(2);
|
||||
} else if (pid)
|
||||
exit(0); // This is the parent
|
||||
|
||||
// Become a process group and session group leader
|
||||
if (setsid()<0) {
|
||||
fprintf (stderr,"Could not set process group\n");
|
||||
exit(2);
|
||||
}
|
||||
|
||||
// Fork again to let process group leader exit
|
||||
pid = fork();
|
||||
if (pid < 0) {
|
||||
fprintf(stderr,"Error detaching during second fork\n");
|
||||
exit(2);
|
||||
} else if (pid)
|
||||
exit(0); // This is the parent
|
||||
|
||||
// Now we're ready for buisness
|
||||
chdir("/"); // Don't keep directories in use
|
||||
close(0); close(1); close(2); // Close stdin, -out and -error
|
||||
/*
|
||||
Note that this implementation does not keep an open
|
||||
stdout/err.
|
||||
If we need them they can be opened now
|
||||
*/
|
||||
|
||||
}
|
||||
|
||||
create_pidfile(itfnum);
|
||||
|
||||
syslog (LOG_INFO, "RFC 1483/2684 bridge daemon started\n");
|
||||
atexit (exitFunc);
|
||||
|
||||
while (1) sleep(30); /* to keep the sockets... */
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user