1b0dfb2ded207b4d787a7748dd51a7df pppbr-001212-br2684ctl.c

Changed files:
    pppbr-001212-br2684ctl.c -> 1.1

diff --git a/pppbr-001212-br2684ctl.c b/pppbr-001212-br2684ctl.c
new file mode 100644 (file)
index 0000000..37127b1
--- /dev/null
+++ b/pppbr-001212-br2684ctl.c
@@ -0,0 +1,173 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <string.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 */
+
+int lastsock, lastitf;
+
+void fatal(char *str, int i)
+{
+       perror(str);
+       exit(-2);
+};
+
+int create_br(char *nstr)
+{
+       int num, err;
+
+       if(lastsock<0) {
+               lastsock = socket(PF_ATMPVC, SOCK_DGRAM, ATM_AAL5);
+       }
+       if (lastsock<0) {
+               perror("socket creation");
+       } 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);
+           printf("create:%d\n",err);
+           if (err>=0) ;;;
+           lastitf=num;        /* even if we didn't create, because existed, assign_vcc wil want to know it! */
+          } else {
+               fprintf (stderr, "err: strange itf number %d", num );
+          }
+          }
+  return 0;
+}
+
+int assign_vcc(char *astr, int encap, int bufsize)
+{
+    int err, errno;
+    struct atm_qos qos;
+    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);
+           printf("text2atm:%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
+    fprintf(stderr,"Communicating over ATM %d.%d.%d\n", addr.sap_addr.itf,
+                                           addr.sap_addr.vpi,
+                                           addr.sap_addr.vci);
+
+    if ((fd = socket(PF_ATMPVC, SOCK_DGRAM, ATM_AAL5)) < 0)
+       fprintf(stderr,"failed to create socket %d", errno);
+
+
+    memset(&qos, 0, sizeof(qos));
+    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;
+
+        err=setsockopt(fd,SOL_SOCKET,SO_SNDBUF, &bufsize ,sizeof(bufsize));
+        fprintf(stderr,"setsockopt SO_SNDBUF: (%d) %s\n",err, strerror(err));
+
+    if (setsockopt(fd, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0)
+        fprintf(stderr,"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);
+           fprintf(stderr, "assign:%d\n",err);
+
+    return fd ;
+}
+
+void usage(char *s)
+{
+       printf("usage: %s [-b] [[-c number] [-a [itf.]vpi.vci]*]*\n", s);
+       exit(1);
+}
+
+int main (int argc, char **argv)
+{
+int c, background=0, encap=0, sndbuf=8192;
+
+       lastsock=-1;
+       lastitf=0;
+
+while ((c = getopt(argc, argv,"a:bc:e:s:")) !=EOF)
+       switch (c) {
+               case 'a':
+                       assign_vcc(optarg, encap, sndbuf);
+                       break;
+               case 'b':
+                       background=1;
+                       break;
+               case 'c':
+                       create_br(optarg);
+                       break;
+               case 'e':
+                       encap=(atoi(optarg));
+                       if(encap<0){
+                               fprintf(stderr, "invalid encap: %s:\n",optarg);
+                               encap=0;
+                       }
+                       break;
+               case 's':
+                       sndbuf=(atoi(optarg));
+                       if(sndbuf<0){
+                               fprintf(stderr, "invalid sndbuf: %s:\n",optarg);
+                               sndbuf=8192;
+                       }
+                       break;
+               default:
+                       usage(argv[0]);
+       }
+       if (argc != optind) usage(argv[0]);
+
+       if(lastsock>=0) close(lastsock);
+
+       if (background) {
+               pid_t pid;
+       /* this seems to be broken, do not use -b for now */
+               pid=fork();
+               if (pid < 0) {
+                       fprintf(stderr,"fork returned negative: %d\n", pid);
+                       exit(2);
+               } else if (pid) {
+                       fprintf(stderr,"Background pid: %d\n",pid);
+                       exit(0);
+               }
+       }
+       
+       while (1) sleep(30);    /* to keep the sockets... */
+       return 0;
+}