openwrt-xburst/package/linux-atm/patches/100-br2684.patch

diff -ruN linux-atm-2.4.1/configure.in linux-atm-2.4.1.new/configure.in
--- linux-atm-2.4.1/configure.in	2003-04-25 04:17:05.000000000 +0200
+++ linux-atm-2.4.1.new/configure.in	2005-07-27 15:45:49.532396543 +0200
@@ -153,26 +153,6 @@
 		src/Makefile \
 		src/include/Makefile \
 		src/lib/Makefile \
-		src/test/Makefile \
-		src/debug/Makefile \
-		src/qgen/Makefile \
-		src/saal/Makefile \
-		src/sigd/Makefile \
-		src/maint/Makefile \
-		src/arpd/Makefile \
-		src/ilmid/Makefile \
-		src/ilmid/asn1/Makefile \
-		src/man/Makefile \
-		src/led/Makefile \
-		src/lane/Makefile \
-		src/mpoad/Makefile \
-		src/switch/Makefile \
-		src/switch/debug/Makefile \
-		src/switch/tcp/Makefile \
-		src/config/Makefile \
-		src/config/init-redhat/Makefile \
-		src/extra/Makefile \
-		src/extra/linux-atm.spec \
-		src/extra/ANS/Makefile
+		src/br2684/Makefile \
 		)
 
diff -ruN linux-atm-2.4.1/src/br2684/Makefile linux-atm-2.4.1.new/src/br2684/Makefile
--- linux-atm-2.4.1/src/br2684/Makefile	1970-01-01 02:00:00.000000000 +0200
+++ linux-atm-2.4.1.new/src/br2684/Makefile	2002-07-15 23:44:25.000000000 +0200
@@ -0,0 +1,13 @@
+PREFIX=${TI_FILESYSTEM}
+
+all: br2684ctl
+
+br2684ctl: br2684ctl.c
+	gcc -latm -o br2684ctl br2684ctl.c 
+	strip br2684ctl
+
+install: br2684ctl
+	cp br2684ctl $(PREFIX)/usr/sbin/
+
+clean:
+	rm -rf br2684ctl *.o
diff -ruN linux-atm-2.4.1/src/Makefile.am linux-atm-2.4.1.new/src/Makefile.am
--- linux-atm-2.4.1/src/Makefile.am	2001-10-03 23:14:53.000000000 +0200
+++ linux-atm-2.4.1.new/src/Makefile.am	2005-07-27 15:33:52.389309711 +0200
@@ -1,3 +1,2 @@
-SUBDIRS = include lib test debug qgen saal sigd maint arpd ilmid man led lane \
-		mpoad switch config extra
+SUBDIRS = include lib br2684
 

diff -Nur linux-atm-2.4.1.orig/src/include/linux/atmbr2684.h linux-atm-2.4.1/src/include/linux/atmbr2684.h
--- linux-atm-2.4.1.orig/src/include/linux/atmbr2684.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-atm-2.4.1/src/include/linux/atmbr2684.h	2005-11-13 00:06:42.000000000 +0100
@@ -0,0 +1,117 @@
+#ifndef _LINUX_ATMBR2684_H
+#define _LINUX_ATMBR2684_H
+
+#include <linux/atm.h>
+#include <linux/if.h>		/* For IFNAMSIZ */
+#include <linux/if_ether.h>	/* ETH_P_* */
+
+/*
+ * Type of media we're bridging (ethernet, token ring, etc)  Currently only
+ * ethernet is supported
+ */
+#define BR2684_MEDIA_ETHERNET	(0)	/* 802.3 */
+#define BR2684_MEDIA_802_4	(1)	/* 802.4 */
+#define BR2684_MEDIA_TR		(2)	/* 802.5 - token ring */
+#define BR2684_MEDIA_FDDI	(3)
+#define BR2684_MEDIA_802_6	(4)	/* 802.6 */
+
+/*
+ * Is there FCS inbound on this VC?  This currently isn't supported.
+ */
+#define BR2684_FCSIN_NO		(0)
+#define BR2684_FCSIN_IGNORE	(1)
+#define BR2684_FCSIN_VERIFY	(2)
+
+/*
+ * Is there FCS outbound on this VC?  This currently isn't supported.
+ */
+#define BR2684_FCSOUT_NO	(0)
+#define BR2684_FCSOUT_SENDZERO	(1)
+#define BR2684_FCSOUT_GENERATE	(2)
+
+/*
+ * Does this VC include LLC encapsulation?
+ */
+#define BR2684_ENCAPS_VC	(0)	/* VC-mux */
+#define BR2684_ENCAPS_LLC	(1)
+#define BR2684_ENCAPS_AUTODETECT (2)	/* Unsuported */
+
+/*
+ * Is this VC bridged or routed?
+ */
+
+#define	BR2684_PAYLOAD_ROUTED	(0)
+#define	BR2684_PAYLOAD_BRIDGED	(1)
+
+
+/*
+ * This is for the ATM_NEWBACKENDIF call - these are like socket families:
+ * the first element of the structure is the backend number and the rest
+ * is per-backend specific
+ */
+struct atm_newif_br2684 {
+	atm_backend_t backend_num;	/* ATM_BACKEND_BR2684 */
+	int media;		/* BR2684_MEDIA_* */
+	char ifname[IFNAMSIZ];
+	int mtu;
+	int payload;		/* bridged or routed */
+};
+
+/*
+ * This structure is used to specify a br2684 interface - either by a
+ * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name
+ */
+#define BR2684_FIND_BYNOTHING	(0)
+#define BR2684_FIND_BYNUM	(1)
+#define BR2684_FIND_BYIFNAME	(2)
+struct br2684_if_spec {
+	int method;		/* BR2684_FIND_* */
+	union {
+		char ifname[IFNAMSIZ];
+		int devnum;
+	} spec;
+};
+
+/*
+ * This is for the ATM_SETBACKEND call - these are like socket families:
+ * the first element of the structure is the backend number and the rest
+ * is per-backend specific
+ */
+struct atm_backend_br2684 {
+	atm_backend_t backend_num;	/* ATM_BACKEND_BR2684 */
+	struct br2684_if_spec ifspec;
+	int fcs_in;		/* BR2684_FCSIN_* */
+	int fcs_out;		/* BR2684_FCSOUT_* */
+	int fcs_auto;		/* 1: fcs_{in,out} disabled if no FCS rx'ed */
+	int encaps;		/* BR2684_ENCAPS_* */
+	int payload;		/* BR2684_PAYLOAD_* */
+	int has_vpiid;		/* 1: use vpn_id - Unsupported */
+	__u8 vpn_id[7];
+	int send_padding;	/* unsupported */
+	int min_size;		/* we will pad smaller packets than this */
+};
+
+/*
+ * The BR2684_SETFILT ioctl is an experimental mechanism for folks
+ * terminating a large number of IP-only vcc's.  When netfilter allows
+ * efficient per-if in/out filters, this support will be removed
+ */
+struct br2684_filter {
+	__u32 prefix;		/* network byte order */
+	__u32 netmask;		/* 0 = disable filter */
+};
+
+struct br2684_filter_set {
+	struct br2684_if_spec ifspec;
+	struct br2684_filter filter;
+};
+
+enum br2684_payload {
+	p_routed = BR2684_PAYLOAD_ROUTED,
+	p_bridged = BR2684_PAYLOAD_BRIDGED,
+};
+
+#define BR2684_SETFILT	_IOW( 'a', ATMIOC_BACKEND + 0, \
+				struct br2684_filter_set)
+
+#endif				/* _LINUX_ATMBR2684_H */
diff Nur linux-atm-2.4.1.orig/src/br2684/br2684ctl.c linux-atm-2.4.1/src/br2684/br2684ctl.c
--- linux-atm-2.4.1.orig/src/br2684/br2684ctl.c
+++ linux-atm-2.4.1/src/br2684/br2684ctl.c
@@ -0,0 +1,302 @@
+#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(char *str, int i)
+{
+	syslog(LOG_ERR, "Fatal: %s", str);
+	exit(-2);
+};
+
+
+void exitFunc(void)
+{
+	syslog(LOG_PID, "Daemon terminated\n");
+}
+
+
+int create_pidfile(char *nstr)
+{
+	FILE *pidfile = NULL;
+	char name[20];
+	int num;
+
+	if (nstr == NULL)
+		return -1;
+	num = atoi(nstr);
+	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 payload)
+{
+	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;
+			ni.payload = payload;	/* bridged or routed */
+			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 payload, 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);
+	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));
+
+
+	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;
+
+	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.payload = payload;
+	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] [-p 0|1] [-t 4|6] [-a [itf.]vpi.vci]*]*\n",
+	     s);
+	exit(1);
+}
+
+
+
+int main(int argc, char **argv)
+{
+	int c, background = 0, encap = 0, sndbuf = 8192, payload = 1;
+	char *itfnum = NULL;
+
+	lastsock = -1;
+	lastitf = 0;
+
+	openlog(LOG_NAME, LOG_OPTION, LOG_FACILITY);
+	if (argc > 1)
+		while ((c = getopt(argc, argv, "a:bc:e:s:p:t:?h")) != EOF)
+			switch (c) {
+			case 'a':
+				assign_vcc(optarg, encap, payload, sndbuf);
+				break;
+			case 'b':
+				background = 1;
+				break;
+			case 'c':
+				create_br(optarg, payload);
+				itfnum = strdup(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 'p':	/* payload type: routed (0) or bridged (1) */
+				payload = atoi(optarg);
+				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
+		 */
+
+	}
+
+	if (itfnum != NULL) {
+		create_pidfile(itfnum);
+		free(itfnum);
+	}
+
+	syslog(LOG_INFO, "RFC 1483/2684 bridge daemon started\n");
+	atexit(exitFunc);
+
+	while (1)
+		sleep(30);	/* to keep the sockets... */
+	return 0;
+}