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add support for routed RFC2684 encaps. on ATM (patches written by joseangel), close #58

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3003 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
2006-01-17 15:37:37 +00:00
parent aa2ac49fdc
commit ed8c341a6a
3 changed files with 1036 additions and 254 deletions
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681
package/linux-atm/patches/100-br2684.patch
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@@ -1,257 +1,3 @@
--- linux-atm-2.4.1.orig/src/br2684/br2684ctl.c
+++ linux-atm-2.4.1/src/br2684/br2684ctl.c
@@ -0,0 +1,251 @@
+#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(const char *str, int i)
+{
+ syslog (LOG_ERR,"Fatal: %s",str);
+ exit(-2);
+};
+
+
+void exitFunc(void)
+{
+ syslog (LOG_PID,"Daemon terminated\n");
+}
+
+
+int create_br(char *nstr)
+{
+ 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;
+ 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 bufsize, struct atm_qos qos)
+{
+ int err;
+ 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));
+
+ if (qos.aal == 0) {
+ 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.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] [-s sndbuf] [-q qos] [-a [itf.]vpi.vci]*]*\n", s);
+ exit(1);
+}
+
+
+
+int main (int argc, char **argv)
+{
+ int c, background=0, encap=0, sndbuf=8192;
+ struct atm_qos 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)
+ switch (c) {
+ case 'q':
+ printf ("optarg : %s",optarg);
+ if (text2qos(optarg,&reqqos,0)) fprintf(stderr,"QOS parameter invalid\n");
+ break;
+ case 'a':
+ assign_vcc(optarg, encap, sndbuf, reqqos);
+ break;
+ case 'b':
+ background=1;
+ break;
+ case 'c':
+ create_br(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 '?':
+ 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
+ */
+
+ }
+
+ syslog (LOG_INFO, "RFC 1483/2684 bridge daemon started\n");
+ atexit (exitFunc);
+
+ while (1) sleep(30); /* to keep the sockets... */
+ return 0;
+}
+
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
@@ -309,3 +55,430 @@ diff -ruN linux-atm-2.4.1/src/Makefile.am linux-atm-2.4.1.new/src/Makefile.am
+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;
+}