remove legacy tun interface (we now have GSMTAP via UDP)

Thanks to Jakob Borg for indicating that this is no longer needed

gsm-receiver/src/lib/decoder/Makefile.am

@@ -35,8 +35,7 @@ libdecoder_la_SOURCES = \
 	cch.c 		\
 	fire_crc.c	\
 	gsmstack.c	\
-	interleave.c	\
-	tun.c		
+	interleave.c	
 #	tch.c		\
 #	conv.c
 
@@ -46,7 +45,6 @@ noinst_HEADERS = 	\
 	fire_crc.h	\
 	gsmstack.h	\
 	interleave.h	\
-	tun.h		\
 	system.h	\
 	gsmtap.h	\
 	a5-1-2.h	

gsm-receiver/src/lib/decoder/gsmstack.h

@@ -6,7 +6,7 @@
 extern "C" {
 #endif
 
-#include <linux/if_ether.h>
+//#include <linux/if_ether.h>
 #include "interleave.h"
 
 enum BURST_TYPE {
@@ -52,9 +52,6 @@ typedef struct
 
 	struct gs_ts_ctx ts_ctx[8];
 
-	int tun_fd;
-	unsigned char ether_addr[ETH_ALEN];
-
 	int gsmtap_fd;
 } GS_CTX;
 

gsm-receiver/src/lib/decoder/tun.c

@@ -1,125 +0,0 @@
-// $Id: tun.cc,v 1.2 2007-07-07 16:31:42 jl Exp $
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <libgen.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <linux/if_tun.h>
-#include <linux/if.h>
-#include <linux/if_ether.h>
-#include <arpa/inet.h>
-
-int mktun(const char *chan_name, unsigned char *ether_addr) {
-
-	struct ifreq ifr;
-	// struct ifreq ifw;
-	char if_name[IFNAMSIZ];
-	int fd, one = 1;
-	// int sd;
-
-	// construct TUN interface
-	if((fd = open("/dev/net/tun", O_RDWR)) == -1) {
-		perror("open");
-		return -1;
-	}
-	memset(&ifr, 0, sizeof(ifr));
-	ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-	snprintf(ifr.ifr_name, IFNAMSIZ, "%s", chan_name);
-	if(ioctl(fd, TUNSETIFF, (void *)&ifr) == -1) {
-		perror("TUNSETIFF");
-		close(fd);
-		return -1;
-	}
-
-	// save actual name
-	memcpy(if_name, ifr.ifr_name, IFNAMSIZ);
-
-	// get ether addr
-	memset(&ifr, 0, sizeof(ifr));
-	memcpy(ifr.ifr_name, if_name, IFNAMSIZ);
-	if(ioctl(fd, SIOCGIFHWADDR, (void *)&ifr) == -1) {
-		perror("SIOCGIFHWADDR");
-		close(fd);
-		return -1;
-	}
-	memcpy(ether_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
-
-	// set persistent
-	if(ioctl(fd, TUNSETPERSIST, (void *)&one) == -1) {
-		perror("TUNSETPERSIST");
-		close(fd);
-		return -1;
-	}
-
-	// set interface up
-	/* XXX must be root
-	if((sd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
-		perror("socket");
-		close(fd);
-		return -1;
-	}
-
-	// get current flags
-	memset(&ifr, 0, sizeof(ifr));
-	strncpy(ifr.ifr_name, if_name, IFNAMSIZ - 1);
-	if(ioctl(sd, SIOCGIFFLAGS, &ifr) == -1) {
-		perror("SIOCGIFFLAGS");
-		close(sd);
-		close(fd);
-		return -1;
-	}
-
-	// set up
-	memset(&ifw, 0, sizeof(ifw));
-	strncpy(ifw.ifr_name, if_name, IFNAMSIZ - 1);
-	ifw.ifr_flags = ifr.ifr_flags | IFF_UP | IFF_RUNNING;
-	if(ioctl(sd, SIOCSIFFLAGS, &ifw) == -1) {
-		perror("SIOCSIFFLAGS");
-		close(sd);
-		close(fd);
-		return -1;
-	}
-	close(sd);
-	 */
-
-	return fd;
-}
-
-
-static inline int min(int a, int b) {
-
-	return (a < b)? a : b;
-}
-
-
-static const unsigned int DEFAULT_MTU = 1500;
-static const unsigned short ether_type = 0xfed5; // current dtap ethertype
-
-int write_interface(int fd, unsigned char *data, unsigned int data_len,
-   unsigned char *ether_addr) {
-
-	unsigned char frame[DEFAULT_MTU]; // XXX buffer overflow?
-	struct ethhdr eh;
-
-	if(fd < 0)
-		return data_len;
-
-	memcpy(eh.h_dest, ether_addr, ETH_ALEN);
-	memcpy(eh.h_source, ether_addr, ETH_ALEN);
-	eh.h_proto = htons(ether_type);
-
-	memcpy(frame, &eh, sizeof(eh));
-	memcpy(frame + sizeof(eh), data,
-	   min(data_len, sizeof(frame) - sizeof(eh)));
-
-	if(write(fd, frame, sizeof(eh) + data_len) == -1) {
-		perror("write");
-		return -1;
-	}
-
-	return data_len;
-}

gsm-receiver/src/lib/decoder/tun.h

@@ -1,4 +0,0 @@
-// $Id: tun.h,v 1.1.1.1 2007-06-01 04:26:57 jl Exp $
-
-int mktun(const char *, unsigned char *);
-int write_interface(int, unsigned char *, unsigned int, unsigned char *);