br2684ctl: add support for notifying nas* bringup via a script

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48320

package/network/utils/linux-atm/patches/500-br2684ctl_script.patch

+--- a/src/br2684/br2684ctl.c
++++ b/src/br2684/br2684ctl.c
+@@ -1,3 +1,4 @@
++#define _GNU_SOURCE
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <unistd.h>
+@@ -43,6 +44,7 @@ struct br2684_params {
+ 
+ 
+ int lastsock, lastitf;
++static char *up_script;
+ 
+ 
+ void fatal(const char *str, int err)
+@@ -185,6 +187,8 @@ int assign_vcc(char *astr, int encap, in
+ 
+ void start_interface(struct br2684_params* params)
+ {
++  char *cmd;
++
+   if (params->astr==NULL) {
+     syslog(LOG_ERR, "Required ATM parameters not specified.");
+     exit(1);
+@@ -193,13 +197,18 @@ void start_interface(struct br2684_param
+   create_br(params->itfnum, params->payload);
+   assign_vcc(params->astr, params->encap, params->payload, params->sndbuf,
+ 	     params->reqqos);
++  if (up_script) {
++    asprintf(&cmd, "%s nas%d", up_script, lastitf);
++    system(cmd);
++    free(cmd);
++  }
+ }
+ 
+ 
+ void usage(char *s)
+ {
+   printf("usage: %s [-b] [[-c number] [-e 0|1] [-s sndbuf] [-q qos] [-p 0|1] "
+-	 "[-a [itf.]vpi.vci]*]*\n", s);
++	 "[-a [itf.]vpi.vci]*]* [-S script]\n", s);
+   printf("  encapsulations: 0=llc, 1=vcmux\n  payloads: 0=routed, 1=bridged\n");
+   exit(1);
+ }
+@@ -258,6 +267,9 @@ int main (int argc, char **argv)
+ 	  params.sndbuf=8192;
+ 	}
+ 	break;
++      case 'S':
++	up_script = optarg;
++	break;
+       case 'p':	/* payload type: routed (0) or bridged (1) */
+ #ifdef BR2684_FLAG_ROUTED
+ 	params.payload = atoi(optarg);