freifunkist-firmware/package/br2684ctl/patches/101-routed_support.patch

diff -Nu br2684ctl-20040226.orig/br2684ctl.c br2684ctl.orig/br2684ctl.c
--- br2684ctl-20040226.orig/br2684ctl.c	2008-03-25 22:26:59.000000000 +0000
+++ br2684ctl.orig/br2684ctl.c	2008-03-31 10:11:06.000000000 +0100
@@ -10,6 +10,10 @@
 #include <atm.h>
 #include <linux/atmdev.h>
 #include <linux/atmbr2684.h>
+#ifndef BR2684_FLAG_ROUTED
+#warning "Kernel missing routed support for br2684"
+#define BR2684_FLAG_ROUTED    (1<<16) /* payload is routed, not bridged */
+#endif
 
 /* Written by Marcell GAL <cell@sch.bme.hu> to make use of the */
 /* ioctls defined in the br2684... kernel patch */
@@ -28,26 +32,35 @@
 #define LOG_OPTION     LOG_PERROR|LOG_PID
 #define LOG_FACILITY   LOG_LOCAL2
 
+struct br2684_params {
+  int itfnum;
+  int encap;
+  int sndbuf;
+  int payload;
+  char *astr; /* temporary */
+  struct atm_qos reqqos;
+};
+
 
 int lastsock, lastitf;
 
 
-void fatal(const char *str, int i)
+void fatal(const char *str, int err)
 {
-  syslog (LOG_ERR,"Fatal: %s",str);
+  syslog (LOG_ERR,"Fatal: %s; %s", str, strerror(err));
   exit(-2);
 };
 
 
 void exitFunc(void)
 {
-  syslog (LOG_NOTICE,"Daemon terminated\n");
+  syslog (LOG_NOTICE,"Daemon terminated");
 }
 
 
 void int_signal(int dummy)
 {
-  syslog (LOG_INFO,"Killed by a signal\n");
+  syslog (LOG_INFO,"Killed by a signal");
   exit(0);
 }
 
@@ -58,7 +71,7 @@
 
   if (num < 0) return -1;
 
-  snprintf(name, 20, "/var/run/nas%d.pid", num);
+  snprintf(name, 32, "/var/run/br2684ctl-nas%d.pid", num);
   pidfile = fopen(name, "w");
   if (pidfile == NULL) return -1;
   fprintf(pidfile, "%d", getpid());
@@ -67,9 +80,9 @@
   return 0;
 }
 
-int create_br(char *nstr)
+int create_br(int itfnum, int payload)
 {
-  int num, err;
+  int err;
   
   if(lastsock<0) {
     lastsock = socket(PF_ATMPVC, SOCK_DGRAM, ATM_AAL5);
@@ -78,31 +91,36 @@
     syslog(LOG_ERR, "socket creation failed: %s",strerror(errno));
   } else {
     /* create the device with ioctl: */
-    num=atoi(nstr);
-    if( num>=0 && num<1234567890){
+    if( itfnum>=0 && itfnum<1234567890){
       struct atm_newif_br2684 ni;
       ni.backend_num = ATM_BACKEND_BR2684;
       ni.media = BR2684_MEDIA_ETHERNET;
+#ifdef BR2684_FLAG_ROUTED
+      if (payload == 0)
+        ni.media |= BR2684_FLAG_ROUTED;
+#endif
       ni.mtu = 1500;
-      sprintf(ni.ifname, "nas%d", num);
+      sprintf(ni.ifname, "nas%d", itfnum);
       err=ioctl (lastsock, ATM_NEWBACKENDIF, &ni);
   
       if (err == 0)
-	syslog(LOG_NOTICE, "Interface \"%s\" created sucessfully\n",ni.ifname);
+	syslog(LOG_NOTICE, "Interface \"%s\" created sucessfully",ni.ifname);
       else
-	syslog(LOG_INFO, "Interface \"%s\" could not be created, reason: %s\n",
+	syslog(LOG_INFO, "Interface \"%s\" could not be created, reason: %s",
 	       ni.ifname,
 	       strerror(errno));
-      lastitf=num;	/* even if we didn't create, because existed, assign_vcc wil want to know it! */
+      lastitf=itfnum;	/* 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 );
+      syslog(LOG_ERR,"err: strange interface number %d", itfnum );
     }
   }
   return 0;
 }
 
 
-int assign_vcc(char *astr, int encap, int bufsize, struct atm_qos qos)
+int assign_vcc(char *astr, int encap, int payload,
+               int bufsize, struct atm_qos qos)
 {
     int err;
     struct sockaddr_atmpvc addr;
@@ -112,21 +130,17 @@
     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);
+      syslog(LOG_ERR,"Could not parse ATM parameters (error=%d)",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_NOTICE,"Communicating over ATM %d.%d.%d, encapsulation: %s\n", addr.sap_addr.itf,
+    syslog(LOG_NOTICE,"Communicating over ATM %d.%d.%d, encapsulation: %s",
+	   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));
+      syslog(LOG_ERR,"failed to create socket %d, reason: %s", 
+	     errno,strerror(errno));
     
     if (qos.aal == 0) {
       qos.aal                     = ATM_AAL5;
@@ -137,7 +151,7 @@
     }
 
     if ( (err=setsockopt(fd,SOL_SOCKET,SO_SNDBUF, &bufsize ,sizeof(bufsize))) )
-      syslog(LOG_ERR,"setsockopt SO_SNDBUF: (%d) %s\n",err, strerror(err));
+      syslog(LOG_ERR,"setsockopt SO_SNDBUF: (%d) %s",err, strerror(err));
     
     if (setsockopt(fd, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0)
       syslog(LOG_ERR,"setsockopt SO_ATMQOS %d", errno);
@@ -145,7 +159,7 @@
     err = connect(fd, (struct sockaddr*)&addr, sizeof(struct sockaddr_atmpvc));
     
     if (err < 0)
-      fatal("failed to connect on socket", err);
+      fatal("failed to connect on socket", errno);
     
     /* attach the vcc to device: */
     
@@ -169,10 +183,30 @@
     return fd ;
 }
 
+void start_interface(struct br2684_params* params)
+{
+  if (params->astr==NULL) {
+    syslog(LOG_ERR, "Required ATM parameters not specified.");
+    exit(1);
+  }
+
+  create_br(params->itfnum, params->payload);
+  assign_vcc(params->astr, params->encap, params->payload, params->sndbuf,
+	     params->reqqos);
+}
+
 
 void usage(char *s)
 {
-  printf("usage: %s [-b] [[-c number] [-e 0|1] [-s sndbuf] [-q qos] [-a [itf.]vpi.vci]*]*\n", s);
+  printf("usage: %s [-b] [[-c number] [-e 0|1] [-s sndbuf] [-q qos] [-p 0|1] "
+        "[-a [itf.]vpi.vci]*]*\n"
+           " -b               = run in background (daemonize)\n"
+           " -c <num>         = use interface nas<num>\n"
+           " -e 0|1           = encapsulation (0=LLC, 1=VC Mux)\n"
+           " -p 0|1           = payload type (0=routed,1=bridged)\n"
+           " -s <num>         = set sndbuf (send buffer) size (default 8192)\n"
+           " -a [itf.]vpi.vci = ATM interface no, VPI, VCI\n",
+           s);
   exit(1);
 }
 
@@ -180,47 +214,63 @@
 
 int main (int argc, char **argv)
 {
-  int c, background=0, encap=0, sndbuf=8192;
-  struct atm_qos reqqos;
-  int itfnum;
+  int c, background=0;
+
+  struct br2684_params params;
+  params.itfnum=-1;
+  params.encap=0;
+  params.sndbuf=8192;
+  params.payload=1;
+  params.astr=NULL;
+  memset(&params.reqqos, 0, sizeof(params.reqqos));
+  
   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)
+    while ((c = getopt(argc, argv,"q:a:bc:e:s:p:?h")) !=EOF)
       switch (c) {
       case 'q':
 	printf ("optarg : %s",optarg);
-	if (text2qos(optarg,&reqqos,0)) fprintf(stderr,"QOS parameter invalid\n"); 
+	if (text2qos(optarg,&params.reqqos,0))
+	  fprintf(stderr,"QOS parameter invalid\n");
 	break;
       case 'a':
-	assign_vcc(optarg, encap, sndbuf, reqqos);
+	params.astr=optarg;
 	break;
       case 'b':
 	background=1;
 	break;
       case 'c':
-	create_br(optarg);
-	itfnum = atoi(optarg);
+	/* temporary, to make it work with multiple interfaces: */
+	if (params.itfnum>=0) start_interface(&params);
+	params.itfnum= atoi(optarg);
 	break;
       case 'e':
-	encap=(atoi(optarg));
-	if(encap<0){
-	  syslog (LOG_ERR, "invalid encapsulation: %s:\n",optarg);
-	  encap=0;
+	params.encap=(atoi(optarg));
+	if(params.encap<0){
+	  syslog (LOG_ERR, "invalid encapsulation: %s:",optarg);
+	  params.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;
+	params.sndbuf=(atoi(optarg));
+	if(params.sndbuf<0){
+	  syslog(LOG_ERR, "Invalid sndbuf: %s, using size of 8192 instead", 
+		 optarg);
+	  params.sndbuf=8192;
 	}
 	break;
+      case 'p':	/* payload type: routed (0) or bridged (1) */
+#ifdef BR2684_FLAG_ROUTED
+	params.payload = atoi(optarg);
+	break;
+#else
+	syslog(LOG_ERR, "payload option not supported.");
+#endif
       case '?':
       case 'h':
       default:
@@ -231,6 +281,8 @@
 
   if (argc != optind) usage(argv[0]);
   
+  start_interface(&params);  
+
   if(lastsock>=0) close(lastsock);
   
   if (background) {
@@ -268,11 +275,11 @@
     
   }
   
-  create_pidfile(itfnum);
+  create_pidfile(params.itfnum);
   signal(SIGINT, int_signal);
   signal(SIGTERM, int_signal);
 
-  syslog (LOG_INFO, "RFC 1483/2684 bridge daemon started\n");	
+  syslog (LOG_INFO, "RFC 1483/2684 bridge daemon started");
   atexit (exitFunc);
   
   while (1) pause();	/* to keep the sockets... */