Hello, i have ported the BCP (Bride Control Protocol) patch for pppd 2.4.1 mentioned in http://lists.osdl.org/pipermail/bridge/2004-September/000619.html to pppd 2.4.2. The kernel patch still works without problems with kernel 2.4.30. Perhaps someone else could use this patch ... Here again some documentation i have found about the BCP patch somewere else: When pppd negotiates BCP, it tells the kernel PPP driver to enable bridging. The kernel creates a device named "bcpX" where X matches the "pppX" device that would be used for IP communication (assuming I did not make a mistake). Pppd runs the script /etc/ppp/eth-up, which is a good place to add bcpX to your bridge and "ifconfig up" it. If the link goes down, the kernel should handle all cleanup, but pppd also calls /etc/ppp/eth-down in case you should find something you want to run at that time. Don't access the bcpX device from eth-down, as it is probably already gone. It should be possible to run BCP and IPCP (and other protocols) simultaneously, although we haven't tested it much because it seems silly. The options "noip", "nobcp", etc. are helpful to restrict the behavior of pppd. The pppd option "maclocal" will tell pppd what hardware address to assign bcpX. Without this option, pppd will attempt to use an address assigned by the peer. BCP negotiation will fail if it can not determine a hardware address. Change the source code if that doesn't suit your application. I don't know how the bridge driver handles interfaces without hardware addresses, though. You might have to turn off STP in that case to avoid unintended consequences. Thanks, Ulrich ------------------- BEGIN SNIP ---------------------- diff -Naur ppp-2.4.2/include/linux/ppp_defs.h ppp-2.4.2-bcp/include/linux/ppp_defs.h --- ppp-2.4.2/include/linux/ppp_defs.h Fri Dec 6 10:49:15 2002 +++ ppp-2.4.2-bcp/include/linux/ppp_defs.h Tue Apr 5 22:26:44 2005 @@ -78,13 +78,16 @@ #define PPP_IPX 0x2b /* IPX protocol */ #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ +#define PPP_BRIDGE 0x31 /* Bridged LAN traffic or BPDU */ #define PPP_MP 0x3d /* Multilink protocol */ #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ #define PPP_COMP 0xfd /* compressed packet */ +#define PPP_BPDU_IEEE 0x0201 /* IEEE 802.1 (D or G) bridge PDU */ #define PPP_IPCP 0x8021 /* IP Control Protocol */ #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ #define PPP_IPXCP 0x802b /* IPX Control Protocol */ +#define PPP_BCP 0x8031 /* Bridging Control Protocol */ #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ #define PPP_CCP 0x80fd /* Compression Control Protocol */ diff -Naur ppp-2.4.2/include/net/ppp_defs.h ppp-2.4.2-bcp/include/net/ppp_defs.h --- ppp-2.4.2/include/net/ppp_defs.h Fri Dec 6 10:49:15 2002 +++ ppp-2.4.2-bcp/include/net/ppp_defs.h Tue Apr 5 22:26:44 2005 @@ -80,11 +80,14 @@ #define PPP_IPX 0x2b /* IPX protocol */ #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ +#define PPP_BRIDGE 0x31 /* Bridged LAN traffic or BPDU */ #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ #define PPP_COMP 0xfd /* compressed packet */ +#define PPP_BPDU_IEEE 0x0201 /* IEEE 802.1 (D or G) bridge PDU */ #define PPP_IPCP 0x8021 /* IP Control Protocol */ #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ #define PPP_IPXCP 0x802b /* IPX Control Protocol */ +#define PPP_BCP 0x8031 /* Bridging Control Protocol */ #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ #define PPP_CCP 0x80fd /* Compression Control Protocol */ #define PPP_ECP 0x8053 /* Encryption Control Protocol */ diff -Naur ppp-2.4.2/pppd/Makefile.linux ppp-2.4.2-bcp/pppd/Makefile.linux --- ppp-2.4.2/pppd/Makefile.linux Tue Dec 7 01:23:15 2004 +++ ppp-2.4.2-bcp/pppd/Makefile.linux Tue Apr 5 22:29:39 2005 @@ -10,7 +10,7 @@ TARGETS = pppd -PPPDSRCS = main.c magic.c fsm.c lcp.c ipcp.c upap.c chap-new.c md5.c ccp.c \ +PPPDSRCS = main.c magic.c fsm.c bcp.c lcp.c ipcp.c upap.c chap-new.c md5.c ccp.c \ ecp.c ipxcp.c auth.c options.c sys-linux.c md4.c chap_ms.c \ demand.c utils.c tty.c eap.c chap-md5.c @@ -19,7 +19,7 @@ upap.h eap.h MANPAGES = pppd.8 -PPPDOBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap-new.o md5.o ccp.o \ +PPPDOBJS = main.o magic.o fsm.o bcp.o lcp.o ipcp.o upap.o chap-new.o md5.o ccp.o \ ecp.o auth.o options.o demand.o utils.o sys-linux.o ipxcp.o tty.o \ eap.o chap-md5.o diff -Naur ppp-2.4.2/pppd/auth.c ppp-2.4.2-bcp/pppd/auth.c --- ppp-2.4.2/pppd/auth.c Thu Jun 12 01:56:26 2003 +++ ppp-2.4.2-bcp/pppd/auth.c Tue Apr 5 22:33:27 2005 @@ -157,9 +157,31 @@ /* Extra options to apply, from the secrets file entry for the peer. */ static struct wordlist *extra_options; +/* Bits 0, 8, 14, and 15 are the same in all network protocol numbers, so + * remove them to save space in np_running[][]. */ +#define NP_BRIEF(np) ((int)((((np) & 0x3E00) >> 2) | (((np) & 0x00FE) >> 1))) +#define NP_ARRAY_BYTE(np) (NP_BRIEF(np) / 8) +#define NP_ARRAY_BIT(np) ((unsigned char)(1 << (NP_BRIEF(np) % 8))) + +/* Flags for running protocols. One bit per protocol per PPP unit. */ +static unsigned char np_running[NP_ARRAY_BYTE(0xBEFF)+1][NUM_PPP]; + /* Number of network protocols which we have opened. */ static int num_np_open; +#define NP_RUNNING(unit, np) \ + (np_running[unit][NP_ARRAY_BYTE(np)] & NP_ARRAY_BIT(np)) + +#define MARK_NP_RUNNING(unit, np) do { \ + np_running[unit][NP_ARRAY_BYTE(np)] |= NP_ARRAY_BIT(np); \ + ++num_np_open; \ + } while (0) + +#define MARK_NP_FINISHED(unit, np) do { \ + np_running[unit][NP_ARRAY_BYTE(np)] &= ~NP_ARRAY_BIT(np); \ + --num_np_open; \ + } while (0) + /* Number of network protocols which have come up. */ static int num_np_up; @@ -583,6 +605,8 @@ if (protp->protocol < 0xC000 && protp->close != NULL) (*protp->close)(unit, "LCP down"); } + + memset(np_running, 0, sizeof(np_running)); num_np_open = 0; num_np_up = 0; if (phase != PHASE_DEAD) @@ -769,7 +793,8 @@ && protp->protocol != PPP_CCP && protp->protocol != PPP_ECP && protp->enabled_flag && protp->open != NULL) { (*protp->open)(0); - ++num_np_open; + /* [UH] ++num_np_open; */ + MARK_NP_RUNNING(0, protp->protocol); } if (num_np_open == 0) @@ -983,16 +1008,31 @@ } /* + * np_start - a network protocol is starting to use the link. + */ +void +np_start(unit, proto) + int unit, proto; +{ + if (!NP_RUNNING(unit, proto)) + MARK_NP_RUNNING(unit, proto); +} + +/* * np_finished - a network protocol has finished using the link. */ void np_finished(unit, proto) int unit, proto; { - if (--num_np_open <= 0) { + if (NP_RUNNING(unit, proto)) { + MARK_NP_FINISHED(unit, proto); + + if (num_np_open <= 0) { /* no further use for the link: shut up shop. */ lcp_close(0, "No network protocols running"); } +} } #ifdef MAXOCTETS diff -Naur ppp-2.4.2/pppd/bcp.c ppp-2.4.2-bcp/pppd/bcp.c --- ppp-2.4.2/pppd/bcp.c Thu Jan 1 01:00:00 1970 +++ ppp-2.4.2-bcp/pppd/bcp.c Tue Apr 5 22:26:44 2005 @@ -0,0 +1,1743 @@ +/* + * bcp.c - PPP Bridge Control Protocol. + * + * Copyright (c) 2001-2004 Applied Innovation Inc. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms. The name of Applied Innovation Inc. + * may not be used to endorse or promote products derived from this + * software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <netdb.h> +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include "pppd.h" +#include "fsm.h" +#include "bcp.h" +#include "pathnames.h" + +/* global vars */ +bcp_options bcp_wantoptions[NUM_PPP]; /* Options that we want to request */ +bcp_options bcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ +bcp_options bcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ +bcp_options bcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ + +/* local vars */ +static int bcp_is_up; /* have called np_up() */ + +static bool bcp_maclocal_valid; +static u_char bcp_maclocal[ETH_ALEN]; +static char bcp_maclocal_str[3*ETH_ALEN]; /* string form of "maclocal" arg */ + +/* + * Callbacks for fsm code. (CI = Configuration Information) + */ +static void bcp_resetci __P((fsm *)); /* Reset our CI */ +static int bcp_cilen __P((fsm *)); /* Return length of our CI */ +static void bcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */ +static int bcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ +static int bcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ +static int bcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ +static int bcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ +static void bcp_up __P((fsm *)); /* We're UP */ +static void bcp_down __P((fsm *)); /* We're DOWN */ +static void bcp_start __P((fsm *)); /* Need lower layer */ +static void bcp_finished __P((fsm *)); /* Don't need lower layer */ + +fsm bcp_fsm[NUM_PPP]; /* BCP fsm structure */ + +static fsm_callbacks bcp_callbacks = { /* BCP callback routines */ + bcp_resetci, /* Reset our Configuration Information */ + bcp_cilen, /* Length of our Configuration Information */ + bcp_addci, /* Add our Configuration Information */ + bcp_ackci, /* ACK our Configuration Information */ + bcp_nakci, /* NAK our Configuration Information */ + bcp_rejci, /* Reject our Configuration Information */ + bcp_reqci, /* Request peer's Configuration Information */ + bcp_up, /* Called when fsm reaches OPENED state */ + bcp_down, /* Called when fsm leaves OPENED state */ + bcp_start, /* Called when we want the lower layer up */ + bcp_finished, /* Called when we want the lower layer down */ + NULL, /* Called when Protocol-Reject received */ + NULL, /* Retransmission is necessary */ + NULL, /* Called to handle protocol-specific codes */ + "BCP" /* String name of protocol */ +}; + +/* + * Command-line options. + */ +static int bcp_setmaclocal __P((char **)); + +static option_t bcp_option_list[] = { + { "nobcp", o_bool, &bcp_protent.enabled_flag, "Disable BCP" }, + { "maclocal", o_special, (void *)bcp_setmaclocal, "set local MAC address", + OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, bcp_maclocal_str }, + { NULL } /* terminating entry */ +}; +/* + * Protocol entry points from main code. + */ +static void bcp_init __P((int)); +static void bcp_open __P((int)); +static void bcp_close __P((int, char *)); +static void bcp_lowerup __P((int)); +static void bcp_lowerdown __P((int)); +static void bcp_input __P((int, u_char *, int)); +static void bcp_protrej __P((int)); +static int bcp_printpkt __P((u_char *, int, + void (*) __P((void *, char *, ...)), void *)); +static void bcp_check_options __P((void)); + +struct protent bcp_protent = { + PPP_BCP, + bcp_init, + bcp_input, + bcp_protrej, + bcp_lowerup, + bcp_lowerdown, + bcp_open, + bcp_close, + bcp_printpkt, + NULL, + 1, + "BCP", + "Bridging", + bcp_option_list, + bcp_check_options, + NULL, + NULL +}; + +static void bcp_script __P((fsm *, char *)); /* Run an up/down script */ +static void bcp_script_done __P((void *)); + +/* + * Lengths of configuration options. + */ +#define CILEN_VOID 2 +#define CILEN_BRIDGELINEID 4 +#define CILEN_MACSUPPORT 3 +#define CILEN_TINYGRAM 3 +#define CILEN_LANID 3 +#define CILEN_MACADDR 8 +#define CILEN_SPANTREE 3 +#define CILEN_IEEE_802_TAGGED_FRAME 3 +#define CILEN_MGMT_INLINE 2 + +#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ + (x) == CONFNAK ? "NAK" : "REJ") + +/* + * This state variable is used to ensure that we don't + * run an bcp-up/down script while one is already running. + */ +static enum script_state { + s_down, + s_up, +} bcp_script_state; +static pid_t bcp_script_pid; + +/* + * Convert a MAC address from a string to an array of bytes. + */ +static int +mac_aton(const char *cp, u_char *mac) +{ + unsigned int args[ETH_ALEN]; + int n; + + if (sscanf(cp, "%2x:%2x:%2x:%2x:%2x:%2x%n", + &args[0], &args[1], &args[2], + &args[3], &args[4], &args[5], &n) >= ETH_ALEN) + { + if (!cp[n]) /* expect to have reached the end of the string */ + { + int i; + for (i = 0; i < ETH_ALEN; ++i) + { + mac[i] = args[i]; + } + return 1; + } + } + + return 0; +} + +/* + * Print a MAC address into a buffer and return the length. + */ +static int +slprintmac(char *buf, int buflen, const u_char *mac) +{ + return slprintf(buf, buflen, "%x:%x:%x:%x:%x:%x", + mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); +} + +/* + * bcp_setmaclocal - set the MAC address to be used on the local interface. + * Returns 0 on error, 1 on success. + */ +static int +bcp_setmaclocal(argv) + char **argv; +{ + bcp_maclocal_valid = mac_aton(argv[0], bcp_maclocal); + + if (bcp_maclocal_valid && (bcp_maclocal[0] & BCP_MULTICAST)) + bcp_maclocal_valid = 0; + + if (!bcp_maclocal_valid) + { + option_error("invalid maclocal value '%s'", argv[0]); + return 0; + } + + slprintmac(bcp_maclocal_str, sizeof(bcp_maclocal_str), bcp_maclocal); + return 1; +} + +/* + * bcp_init - Initialize BCP. + */ +static void +bcp_init(unit) + int unit; +{ + fsm *f = &bcp_fsm[unit]; + bcp_options *wo = &bcp_wantoptions[unit]; + bcp_options *ao = &bcp_allowoptions[unit]; + + f->unit = unit; + f->protocol = PPP_BCP; + f->callbacks = &bcp_callbacks; + fsm_init(&bcp_fsm[unit]); + + memset(wo, 0, sizeof(*wo)); + memset(ao, 0, sizeof(*ao)); + + wo->neg_macsupport = 1; + wo->macsupport[0] = MAC_IEEE_802_3; + + /* Try Management-Inline first, but prepare to fall back on + * Spanning-Tree-Protocol if it fails. */ + wo->neg_mgmt_inline = 1; + wo->neg_spantree = 0; + wo->spantree = SPAN_IEEE_802_1D; + + wo->neg_tinygram = 1; + wo->tinygram = 1; /* Linux can receive Tinygrams. */ + + ao->neg_macsupport = 1; + ao->neg_tinygram = 1; + ao->neg_macaddr = 1; + + ao->neg_mgmt_inline = 1; + ao->neg_spantree = 1; +} + + +/* + * bcp_open - BCP is allowed to come up. + */ +static void +bcp_open(unit) + int unit; +{ + fsm_open(&bcp_fsm[unit]); +} + + +/* + * bcp_close - Take BCP down. + */ +static void +bcp_close(unit, reason) + int unit; + char *reason; +{ + fsm_close(&bcp_fsm[unit], reason); +} + + +/* + * bcp_lowerup - The lower layer is up. + */ +static void +bcp_lowerup(unit) + int unit; +{ + fsm_lowerup(&bcp_fsm[unit]); +} + + +/* + * bcp_lowerdown - The lower layer is down. + */ +static void +bcp_lowerdown(unit) + int unit; +{ + fsm_lowerdown(&bcp_fsm[unit]); +} + + +/* + * bcp_input - Input BCP packet. + */ +static void +bcp_input(unit, p, len) + int unit; + u_char *p; + int len; +{ + fsm_input(&bcp_fsm[unit], p, len); +} + + +/* + * bcp_protrej - A Protocol-Reject was received for BCP. + * + * Pretend the lower layer went down, so we shut up. + */ +static void +bcp_protrej(unit) + int unit; +{ + fsm_lowerdown(&bcp_fsm[unit]); +} + + +/* + * bcp_resetci - Reset our CI. + * Called by fsm_sconfreq, Send Configure Request. + */ +static void +bcp_resetci(f) + fsm *f; +{ + bcp_options *wo = &bcp_wantoptions[f->unit]; + bcp_options *go = &bcp_gotoptions[f->unit]; + + /* Either announce our MAC address to the other side, or request one from + * the other side. (Another possibility is not to negotiate at all, but + * that seems useless.) */ + wo->neg_macaddr = 1; + if (bcp_maclocal_valid) + memcpy(wo->macaddr, bcp_maclocal, sizeof(wo->macaddr)); + else + memset(wo->macaddr, 0, sizeof(wo->macaddr)); + + *go = *wo; +} + + +/* + * bcp_cilen - Return length of our CI. + * Called by fsm_sconfreq, Send Configure Request. + */ +static int +bcp_cilen(f) + fsm *f; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + + int macsupport_len = 0; + int mac = 0; + for (mac=0; mac<ETH_ALEN; mac++) + { + if (go->macsupport[mac]) + { + macsupport_len += CILEN_MACSUPPORT; + } + } + +#define LENCIBRIDGELINEID(neg) ((neg) ? CILEN_BRIDGELINEID : 0) +#define LENCITINYGRAM(neg) ((neg) ? CILEN_TINYGRAM : 0) +#define LENCILANID(neg) ((neg) ? CILEN_LANID : 0) +#define LENCIMACADDR(neg) ((neg) ? CILEN_MACADDR : 0) +#define LENCISPANTREE(neg) ((neg) ? CILEN_SPANTREE : 0) +#define LENCIMGMTINLINE(neg) ((neg) ? CILEN_MGMT_INLINE : 0) + + + return (LENCIBRIDGELINEID(go->neg_bridgeid) + + LENCIBRIDGELINEID(go->neg_lineid) + + macsupport_len + + LENCITINYGRAM(go->neg_tinygram) + + LENCILANID(go->neg_lanid) + + LENCIMACADDR(go->neg_macaddr) + + LENCISPANTREE(go->neg_spantree) + + LENCIMGMTINLINE(go->neg_mgmt_inline)); +} + +/* + * bcp_addci - Add our desired CIs to a packet. + * Called by fsm_sconfreq, Send Configure Request. + */ +static void +bcp_addci(f, ucp, lenp) + fsm *f; + u_char *ucp; + int *lenp; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + int len = *lenp; + +#define ADDCIBRIDGELINEID(opt, neg, lan_bridge_segno) \ + if (neg) { \ + if (len >= CILEN_BRIDGELINEID) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_BRIDGELINEID, ucp); \ + PUTSHORT(lan_bridge_segno, ucp); \ + len -= CILEN_BRIDGELINEID; \ + } else \ + neg = 0; \ + } + +#define ADDCIMACSUPPORT(opt, neg, macsupport) \ + if (neg && macsupport) { \ + if (len >= CILEN_MACSUPPORT) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_MACSUPPORT, ucp); \ + PUTCHAR(macsupport, ucp); \ + len -= CILEN_MACSUPPORT; \ + } else \ + neg = 0; \ + } + +#define ADDCITINYGRAM(opt, neg, tinygram) \ + if (neg) { \ + if (len >= CILEN_TINYGRAM) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_TINYGRAM, ucp); \ + PUTCHAR(tinygram, ucp); \ + len -= CILEN_TINYGRAM; \ + } else \ + neg = 0; \ + } + +#define ADDCILANID(opt, neg, lanid) \ + if (neg) { \ + if (len >= CILEN_LANID) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_LANID, ucp); \ + PUTCHAR(lanid, ucp); \ + len -= CILEN_LANID; \ + } else \ + neg = 0; \ + } + +#define ADDCIMACADDR(opt, neg, macaddr) \ + if (neg) { \ + if (len >= CILEN_MACADDR) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_MACADDR, ucp); \ + PUTCHAR(macaddr[0], ucp); \ + PUTCHAR(macaddr[1], ucp); \ + PUTCHAR(macaddr[2], ucp); \ + PUTCHAR(macaddr[3], ucp); \ + PUTCHAR(macaddr[4], ucp); \ + PUTCHAR(macaddr[5], ucp); \ + len -= CILEN_MACADDR; \ + } else \ + neg = 0; \ + } + +#define ADDCISPANTREE(opt, neg, spantree) \ + if (neg) { \ + if (len >= CILEN_SPANTREE) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_SPANTREE, ucp); \ + PUTCHAR(spantree, ucp); \ + len -= CILEN_SPANTREE; \ + } else \ + neg = 0; \ + } + +#define ADDCIMGMTINLINE(opt, neg) \ + if (neg) { \ + if (len >= CILEN_MGMT_INLINE) { \ + PUTCHAR(opt, ucp); \ + PUTCHAR(CILEN_MGMT_INLINE, ucp); \ + len -= CILEN_MGMT_INLINE; \ + } else \ + neg = 0; \ + } + + ADDCIBRIDGELINEID(CI_BRIDGE_IDENTIFICATION, go->neg_bridgeid, go->lan_bridge_segno); + + ADDCIBRIDGELINEID(CI_LINE_IDENTIFICATION, go->neg_lineid, go->lan_bridge_segno); + + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[0]); + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[1]); + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[2]); + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[3]); + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[4]); + ADDCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[5]); + + ADDCITINYGRAM(CI_TINYGRAM_COMPRESSION, go->neg_tinygram, go->tinygram); + + ADDCILANID(CI_LAN_IDENTIFICATION, go->neg_lanid, go->lanid); + + ADDCIMACADDR(CI_MAC_ADDRESS, go->neg_macaddr, go->macaddr); + + ADDCISPANTREE(CI_SPANNING_TREE_PROTOCOL, go->neg_spantree, go->spantree); + + ADDCIMGMTINLINE(CI_MANAGEMENT_INLINE, go->neg_mgmt_inline); + + *lenp -= len; +} + + +/* + * bcp_ackci - Ack our CIs. + * Called by fsm_rconfack, Receive Configure ACK. + * + * Returns: + * 0 - Ack was bad. + * 1 - Ack was good. + */ +static int +bcp_ackci(f, p, len) + fsm *f; + u_char *p; + int len; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + u_char cilen, citype, cichar; + u_short cishort; + + /* + * CIs must be in exactly the same order that we sent... + * Check packet length and CI length at each step. + * If we find any deviations, then this packet is bad. + */ +#define ACKCIBRIDGELINEID(opt, neg, lan_bridge_segno) \ + if (neg) { \ + if ((len -= CILEN_BRIDGELINEID) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_BRIDGELINEID || citype != opt) \ + goto bad; \ + GETSHORT(cishort, p); \ + if (lan_bridge_segno != cishort) \ + goto bad; \ + } + +#define ACKCIMACSUPPORT(opt, neg, macsupport) \ + if (neg && macsupport) { \ + if ((len -= CILEN_MACSUPPORT) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_MACSUPPORT || citype != opt) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macsupport != cichar) \ + goto bad; \ + } + +#define ACKCITINYGRAM(opt, neg, tinygram) \ + if (neg) { \ + if ((len -= CILEN_TINYGRAM) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_TINYGRAM || citype != opt) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (tinygram != cichar) \ + goto bad; \ + } + +#define ACKCILANID(opt, neg, lanid) \ + if (neg) { \ + if ((len -= CILEN_LANID) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_LANID || citype != opt) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (lanid != cichar) \ + goto bad; \ + } + +#define ACKCIMACADDR(opt, neg, macaddr) \ + if (neg) { \ + if ((len -= CILEN_MACADDR) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_MACADDR || citype != opt) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[0] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[1] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[2] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[3] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[4] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[5] != cichar) \ + goto bad; \ + } + +#define ACKCISPANTREE(opt, neg, spantree) \ + if (neg) { \ + if ((len -= CILEN_SPANTREE) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_SPANTREE || citype != opt) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (spantree != cichar) \ + goto bad; \ + } + +#define ACKMGMTINLINE(opt, neg) \ + if (neg) { \ + if ((len -= CILEN_MGMT_INLINE) < 0) \ + goto bad; \ + GETCHAR(citype, p); \ + GETCHAR(cilen, p); \ + if (cilen != CILEN_MGMT_INLINE || citype != opt) \ + goto bad; \ + } + + + + ACKCIBRIDGELINEID(CI_BRIDGE_IDENTIFICATION, go->neg_bridgeid, go->lan_bridge_segno); + + ACKCIBRIDGELINEID(CI_LINE_IDENTIFICATION, go->neg_lineid, go->lan_bridge_segno); + + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[0]); + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[1]); + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[2]); + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[3]); + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[4]); + ACKCIMACSUPPORT(CI_MAC_SUPPORT, go->neg_macsupport, go->macsupport[5]); + + ACKCITINYGRAM(CI_TINYGRAM_COMPRESSION, go->neg_tinygram, go->tinygram); + + ACKCILANID(CI_LAN_IDENTIFICATION, go->neg_lanid, go->lanid); + + ACKCIMACADDR(CI_MAC_ADDRESS, go->neg_macaddr, go->macaddr); + + ACKCISPANTREE(CI_SPANNING_TREE_PROTOCOL, go->neg_spantree, go->spantree); + + ACKMGMTINLINE(CI_MANAGEMENT_INLINE, go->neg_mgmt_inline); + + /* + * If there are any remaining CIs, then this packet is bad. + */ + if (len != 0) + goto bad; + return (1); + +bad: + BCPDEBUG(("bcp_ackci: received bad Ack!")); + return (0); +} + +/* + * bcp_nakci - Peer has sent a NAK for some of our CIs. + * This should not modify any state if the Nak is bad + * or if BCP is in the OPENED state. + * Calback from fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. + * + * Returns: + * 0 - Nak was bad. + * 1 - Nak was good. + */ +static int +bcp_nakci(f, p, len) + fsm *f; + u_char *p; + int len; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + u_char cichar; + u_char citype, cilen, *next; + u_short cishort; + bcp_options no; /* options we've seen Naks for */ + bcp_options try; /* options to request next time */ + u_char bridge_id; + u_short lan_segno; + u_char macaddr[ETH_ALEN]; + int mac; + + BZERO(&no, sizeof(no)); + try = *go; + + /* + * Any Nak'd CIs must be in exactly the same order that we sent. + * Check packet length and CI length at each step. + * If we find any deviations, then this packet is bad. + */ +#define NAKCIBRIDGELINEID(opt, neg, code) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_BRIDGELINEID) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETSHORT(cishort, p); \ + no.neg = 1; \ + code \ + } + +#define NAKCIMACADDR(opt, neg, code) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_MACADDR) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + no.neg = 1; \ + GETCHAR(macaddr[0], p); \ + GETCHAR(macaddr[1], p); \ + GETCHAR(macaddr[2], p); \ + GETCHAR(macaddr[3], p); \ + GETCHAR(macaddr[4], p); \ + GETCHAR(macaddr[5], p); \ + code \ + } + +#define NAKCISPANTREE(opt, neg, code) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_SPANTREE) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + no.neg = 1; \ + GETCHAR(cichar, p); \ + code \ + } + +#define NAKCIMGMTINLINE(opt, neg, code) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_MGMT_INLINE) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + no.neg = 1; \ + code \ + } + + /* + * Accept the peer's value of bridge_id provided that it + * is greater than what we asked for. + */ + NAKCIBRIDGELINEID(CI_BRIDGE_IDENTIFICATION, neg_bridgeid, + bridge_id = cishort & 0xf; + if (bridge_id > 0 && + bridge_id > (go->lan_bridge_segno & 0xf)) + { + try.lan_bridge_segno = cishort; + } + ); + + /* + * Accept the peer's value of lan_segno provided that it + * is greater than what we asked for. + */ + NAKCIBRIDGELINEID(CI_LINE_IDENTIFICATION, neg_lineid, + lan_segno = cishort >> 4; + if (lan_segno > 0 && + lan_segno > (go->lan_bridge_segno >> 4)) + { + try.lan_bridge_segno = cishort; + } + ); + + /* + * Peer is not supposed to send Mac-Support in a Configure-Nak. + */ + + /* + * Peer is not supposed to send TinyGram-Compression in a Configure-Nak + * if we already sent it in a Configure-Request already. + */ + + + /* + * Peer is not supposed to send LAN-Identification in a Configure-Nak. + */ + + /* + * Accept the peer's value of macaddr provided that we requested + * an address of 00-00-00-00-00-00 and the suggested address does + * NOT have the multicast bit set. + */ + NAKCIMACADDR(CI_MAC_ADDRESS, neg_macaddr, + for (mac=0; mac<ETH_ALEN; mac++) + { + if (go->macaddr[mac] != 0) + break; + } + if (mac == ETH_ALEN) + { + if (!(macaddr[0] & BCP_MULTICAST)) + { + try.macaddr[0] = macaddr[0]; + try.macaddr[1] = macaddr[1]; + try.macaddr[2] = macaddr[2]; + try.macaddr[3] = macaddr[3]; + try.macaddr[4] = macaddr[4]; + try.macaddr[5] = macaddr[5]; + } + } + ); + + /* + * Accept the peer's value of spantree provided it has a lower + * protocol Id than the one we requested. + */ + NAKCISPANTREE(CI_SPANNING_TREE_PROTOCOL, neg_spantree, + if (cichar < go->spantree) + { + try.spantree = cichar; + } + ); + + NAKCIMGMTINLINE(CI_MANAGEMENT_INLINE, neg_mgmt_inline, + do {} while(0); + ); + + /* + * There may be remaining CIs, if the peer is requesting negotiation + * on an option that we didn't include in our request packet. + * If we see an option that we requested, or one we've already seen + * in this packet, then this packet is bad. + * If we wanted to respond by starting to negotiate on the requested + * option(s), we could, but we don't, because if we are not negotiating + * an option, it is because we were told not to. + */ + while (len > CILEN_VOID) { + GETCHAR(citype, p); + GETCHAR(cilen, p); + if( (len -= cilen) < 0 ) + goto bad; + next = p + cilen - 2; + + switch (citype) { + case CI_BRIDGE_IDENTIFICATION: + if (go->neg_bridgeid || no.neg_bridgeid || cilen != CILEN_BRIDGELINEID) + goto bad; + break; + case CI_LINE_IDENTIFICATION: + if (go->neg_lineid || no.neg_lineid || cilen != CILEN_BRIDGELINEID) + goto bad; + break; + case CI_TINYGRAM_COMPRESSION: + if (go->neg_tinygram || cilen != CILEN_TINYGRAM) + goto bad; + break; + case CI_LAN_IDENTIFICATION: + if (go->neg_lanid || cilen != CILEN_LANID) + goto bad; + break; + case CI_MAC_ADDRESS: + if (go->neg_macaddr || cilen != CILEN_MACADDR) + goto bad; + break; + case CI_SPANNING_TREE_PROTOCOL: + if (go->neg_spantree || cilen != CILEN_SPANTREE) + goto bad; + break; + case CI_MANAGEMENT_INLINE: + if (go->neg_mgmt_inline || cilen != CILEN_MGMT_INLINE) + goto bad; + break; + } + p = next; + } + + /* + * OK, the Nak is good. Now we can update state. + * If there are any remaining options, we ignore them. + */ + if (f->state != OPENED) + *go = try; + + return 1; + +bad: + BCPDEBUG(("bcp_nakci: received bad Nak!")); + return 0; +} + + +/* + * bcp_rejci - Reject some of our CIs. + * Callback from fsm_rconfnakrej. + */ +static int +bcp_rejci(f, p, len) + fsm *f; + u_char *p; + int len; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + u_char cilen, cichar; + u_short cishort; + bcp_options try; /* options to request next time */ + + try = *go; + + /* + * Any Rejected CIs must be in exactly the same order that we sent. + * Check packet length and CI length at each step. + * If we find any deviations, then this packet is bad. + */ +#define REJCIBRIDGELINEID(opt, neg, lan_bridge_segno) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_BRIDGELINEID) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETSHORT(cishort, p); \ + /* Check rejected value. */ \ + if (cishort != lan_bridge_segno) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCIMACSUPPORT(opt, neg, macsupport) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_MACSUPPORT) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETCHAR(cichar, p); \ + /* Check rejected value. */ \ + if (cichar != macsupport) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCITINYGRAM(opt, neg, tinygram) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_TINYGRAM) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETCHAR(cichar, p); \ + /* Check rejected value. */ \ + if (cichar != tinygram) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCILANID(opt, neg, lanid) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_LANID) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETCHAR(cichar, p); \ + /* Check rejected value. */ \ + if (cichar != lanid) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCIMACADDR(opt, neg, macaddr) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_MACADDR) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + /* Check rejected value. */ \ + GETCHAR(cichar, p); \ + if (macaddr[0] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[1] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[2] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[3] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[4] != cichar) \ + goto bad; \ + GETCHAR(cichar, p); \ + if (macaddr[5] != cichar) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCISPANTREE(opt, neg, spantree) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_SPANTREE) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + GETCHAR(cichar, p); \ + /* Check rejected value. */ \ + if (cichar != spantree) \ + goto bad; \ + try.neg = 0; \ + } + +#define REJCIMGMTINLINE(opt, neg) \ + if (go->neg && \ + ((cilen = p[1]) == CILEN_MGMT_INLINE) && \ + len >= cilen && \ + p[0] == opt) { \ + len -= cilen; \ + INCPTR(2, p); \ + try.neg = 0; \ + } + + REJCIBRIDGELINEID(CI_BRIDGE_IDENTIFICATION, neg_bridgeid, go->lan_bridge_segno); + + REJCIBRIDGELINEID(CI_LINE_IDENTIFICATION, neg_lineid, go->lan_bridge_segno); + + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[0]); + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[1]); + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[2]); + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[3]); + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[4]); + REJCIMACSUPPORT(CI_MAC_SUPPORT, neg_macsupport, go->macsupport[5]); + + REJCITINYGRAM(CI_TINYGRAM_COMPRESSION, neg_tinygram, go->tinygram); + + REJCILANID(CI_LAN_IDENTIFICATION, neg_lanid, go->lanid); + + REJCIMACADDR(CI_MAC_ADDRESS, neg_macaddr, go->macaddr); + + REJCISPANTREE(CI_SPANNING_TREE_PROTOCOL, neg_spantree, go->spantree); + + REJCIMGMTINLINE(CI_MANAGEMENT_INLINE, neg_mgmt_inline); + + /* + * If there are any remaining CIs, then this packet is bad. + */ + if (len != 0) + goto bad; + + /* If Management-Inline was rejected, try to negotiate a + * Spanning-Tree-Protocol instead. */ + if (go->neg_mgmt_inline && !try.neg_mgmt_inline) + try.neg_spantree = 1; + + /* + * Now we can update state. + */ + if (f->state != OPENED) + *go = try; + return 1; + +bad: + BCPDEBUG(("bcp_rejci: received bad Reject!")); + return 0; +} + + +/* + * bcp_reqci - Check the peer's requested CIs and send appropriate response. + * Callback from fsm_rconfreq, Receive Configure Request + * + * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified + * appropriately. If reject_if_disagree is non-zero, doesn't return + * CONFNAK; returns CONFREJ if it can't return CONFACK. + */ +static int +bcp_reqci(f, inp, len, reject_if_disagree) + fsm *f; + u_char *inp; /* Requested CIs */ + int *len; /* Length of requested CIs */ + int reject_if_disagree; +{ + bcp_options *ho = &bcp_hisoptions[f->unit]; + bcp_options *ao = &bcp_allowoptions[f->unit]; + bcp_options *go = &bcp_gotoptions[f->unit]; + u_char *cip, *next; /* Pointer to current and next CIs */ + u_short cilen, citype; /* Parsed len, type */ + u_short cishort; /* Parsed short value */ + u_char cichar; /* Parsed char value */ + u_char bridge_id; + u_short lan_segno; + int mac; + u_char macaddr[ETH_ALEN]; + + int rc = CONFACK; /* Final packet return code */ + int orc; /* Individual option return code */ + u_char *p; /* Pointer to next char to parse */ + u_char *ucp = inp; /* Pointer to current output char */ + int l = *len; /* Length left */ + + /* + * Reset all his options. + */ + BZERO(ho, sizeof(*ho)); + + /* + * Process all his options. + */ + next = inp; + while (l) { + orc = CONFACK; /* Assume success */ + cip = p = next; /* Remember begining of CI */ + if (l < 2 || /* Not enough data for CI header or */ + p[1] < 2 || /* CI length too small or */ + p[1] > l) { /* CI length too big? */ + BCPDEBUG(("bcp_reqci: bad CI length!")); + orc = CONFREJ; /* Reject bad CI */ + cilen = l; /* Reject till end of packet */ + l = 0; /* Don't loop again */ + goto endswitch; + } + GETCHAR(citype, p); /* Parse CI type */ + GETCHAR(cilen, p); /* Parse CI length */ + l -= cilen; /* Adjust remaining length */ + next += cilen; /* Step to next CI */ + + switch (citype) { /* Check CI type */ + case CI_BRIDGE_IDENTIFICATION: + if (!ao->neg_bridgeid || /* Allow option? */ + cilen != CILEN_BRIDGELINEID) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETSHORT(cishort, p); /* Parse lan_bridge_segno */ + + /* + * If we are also negotiating bridgeid, then + * both sides must agree on the higher bridgeid. + */ + bridge_id = cishort & 0xf; + if ((bridge_id < (go->lan_bridge_segno & 0xf)) && + go->neg_bridgeid) + { + orc = CONFNAK; /* Nak CI */ + DECPTR(sizeof(u_short), p); + PUTSHORT(go->lan_bridge_segno, p); /* Give him a hint */ + break; + } + ho->neg_bridgeid = 1; /* Remember he negotiated this item */ + ho->lan_bridge_segno = cishort; /* And remember value */ + break; + + case CI_LINE_IDENTIFICATION: + if (!ao->neg_lineid || /* Allow option? */ + cilen != CILEN_BRIDGELINEID) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETSHORT(cishort, p); /* Parse lan_bridge_segno */ + + /* + * If we are also negotiating lineid, then + * both sides must agree on the higher lan_segno. + */ + lan_segno = cishort >> 4; + if ((lan_segno < (go->lan_bridge_segno >> 4)) && + go->neg_lineid) + { + orc = CONFNAK; /* Nak CI */ + DECPTR(sizeof(u_short), p); + PUTSHORT(go->lan_bridge_segno, p); /* Give him a hint */ + break; + } + ho->neg_lineid = 1; /* Remember he negotiated this item */ + ho->lan_bridge_segno = cishort; /* And remember value */ + break; + + case CI_MAC_SUPPORT: + if (!ao->neg_macsupport || /* Allow option? */ + cilen != CILEN_MACSUPPORT) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETCHAR(cichar, p); /* Parse macsupport value */ + + /* + * Ensure a valid value, else reject. + */ + switch (cichar) + { + case MAC_IEEE_802_3: + case MAC_IEEE_802_4: + case MAC_IEEE_802_5_NON: + case MAC_FDDI_NON: + case MAC_IEEE_802_5: + case MAC_FDDI: + ho->neg_macsupport = 1; + for (mac=0; mac<ETH_ALEN; mac++) + { + if (ho->macsupport[mac] == 0) + ho->macsupport[mac] = cichar; + } + break; + default: + orc = CONFREJ; /* Reject CI */ + break; + } + break; + + case CI_TINYGRAM_COMPRESSION: + if (!ao->neg_tinygram || /* Allow option? */ + cilen != CILEN_TINYGRAM) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETCHAR(cichar, p); /* Parse tinygram value */ + + /* + * Ensure a valid value, else reject. + */ + if (cichar != 1 && cichar !=2) + { + orc = CONFREJ; /* Reject CI */ + break; + } + ho->neg_tinygram = 1; /* Remember he negotiated this item */ + ho->tinygram = cichar; /* And remember value */ + break; + + case CI_LAN_IDENTIFICATION: + if (!ao->neg_lanid || /* Allow option? */ + cilen != CILEN_LANID) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETCHAR(cichar, p); /* Parse lanid value */ + + /* + * Ensure a valid value, else reject. + */ + if (cichar != 1 && cichar !=2) + { + orc = CONFREJ; /* Reject CI */ + break; + } + ho->neg_lanid = 1; /* Remember he negotiated this item */ + ho->lanid = cichar; /* And remember value */ + break; + + + case CI_MAC_ADDRESS: + if (!ao->neg_macaddr || /* Allow option? */ + cilen != CILEN_MACADDR) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETCHAR(macaddr[0], p); /* Parse macaddr value */ + GETCHAR(macaddr[1], p); + GETCHAR(macaddr[2], p); + GETCHAR(macaddr[3], p); + GETCHAR(macaddr[4], p); + GETCHAR(macaddr[5], p); + + /* + * Reject macaddr if it has the multicast bit set or + * if it is all zeroes. (All zeroes is a request for + * us to assign a MAC address, which we could do, but...) + */ + for (mac=0; mac<ETH_ALEN; mac++) + { + if (go->macaddr[mac] != 0) + break; + } + if ((mac == ETH_ALEN) || (macaddr[0] & BCP_MULTICAST)) + { + orc = CONFREJ; /* Reject CI */ + break; + } + + ho->neg_macaddr = 1; /* Remember he negotiated this item */ + ho->macaddr[0] = macaddr[0]; /* And remember value */ + ho->macaddr[1] = macaddr[1]; + ho->macaddr[2] = macaddr[2]; + ho->macaddr[3] = macaddr[3]; + ho->macaddr[4] = macaddr[4]; + ho->macaddr[5] = macaddr[5]; + break; + + case CI_SPANNING_TREE_PROTOCOL: + if (!ao->neg_spantree || /* Allow option? */ + cilen != CILEN_SPANTREE) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + GETCHAR(cichar, p); /* Parse spantree value */ + + /* + * Ensure a valid value, else reject. + */ + if (cichar > MAX_SPANTREE) + { + orc = CONFREJ; /* Reject CI */ + break; + } + + if ((cichar > go->spantree) && go->neg_spantree) + { + orc = CONFNAK; /* Nak CI */ + DECPTR(sizeof(u_short), p); + PUTSHORT(go->spantree, p); /* Give him a hint */ + break; + } + + ho->neg_spantree = 1; /* Remember he negotiated this item */ + ho->spantree = cichar; /* And remember value */ + break; + + case CI_MANAGEMENT_INLINE: + if (!ao->neg_mgmt_inline || /* Allow option? */ + cilen != CILEN_MGMT_INLINE) /* Check CI length */ + { + orc = CONFREJ; /* Reject CI */ + break; + } + + ho->neg_mgmt_inline = 1; /* Remember he negotiated this item */ + break; + + default: + orc = CONFREJ; + break; + } +endswitch: + if (orc == CONFACK && /* Good CI */ + rc != CONFACK) /* but prior CI wasnt? */ + continue; /* Don't send this one */ + + if (orc == CONFNAK) { /* Nak this CI? */ + if (reject_if_disagree) /* Getting fed up with sending NAKs? */ + orc = CONFREJ; /* Get tough if so */ + else { + if (rc == CONFREJ) /* Rejecting prior CI? */ + continue; /* Don't send this one */ + if (rc == CONFACK) { /* Ack'd all prior CIs? */ + rc = CONFNAK; /* Not anymore... */ + ucp = inp; /* Backup */ + } + } + } + + if (orc == CONFREJ && /* Reject this CI */ + rc != CONFREJ) { /* but no prior ones? */ + rc = CONFREJ; + ucp = inp; /* Backup */ + } + + /* Need to move CI? */ + if (ucp != cip) + BCOPY(cip, ucp, cilen); /* Move it */ + + /* Update output pointer */ + INCPTR(cilen, ucp); + } + + *len = ucp - inp; /* Compute output length */ + BCPDEBUG(("bcp: returning Configure-%s", CODENAME(rc))); + return (rc); /* Return final code */ +} + + +/* + * bcp_up - BCP has come UP. + * + * Configure the IP network interface appropriately and bring it up. + */ +static void +bcp_up(f) + fsm *f; +{ + bcp_options *go = &bcp_gotoptions[f->unit]; + bcp_options *ho = &bcp_hisoptions[f->unit]; + bcp_options *wo = &bcp_wantoptions[f->unit]; + u_char *maclocal; + char buf[32]; + + BCPDEBUG(("bcp: up")); + + /* Choose which MAC address (if any) to assign to the interface. */ + if (go->neg_macaddr) + maclocal = go->macaddr; + else if (wo->neg_macaddr) { + int i; + + /* If the wanted MAC address is all zeroes, it means we wanted the peer + * to assign us one. Since we didn't get one, there's a problem. */ + for (i = 0; i < ETH_ALEN; ++i) { + if (wo->macaddr[i] != 0) + break; + } + + if (i == ETH_ALEN) { + error("Could not determine local MAC address"); + bcp_close(f->unit, "Could not determine local MAC address"); + return; + } + + maclocal = wo->macaddr; + } else + maclocal = NULL; + + /* If Management-Inline is not supported, tell the kernel to encapsulate + * bridge PDUs in the old RFC 1638 format. */ + if (!go->neg_mgmt_inline) + { + sifnpmode(ifunit, PPP_BPDU_IEEE, NPMODE_PASS); + } + + /* After this the "bcp%d" device will exist. */ + sifnpmode(ifunit, PPP_BRIDGE, NPMODE_PASS); + + if (maclocal) { + char eth_ifname[16]; + slprintf(eth_ifname, sizeof(eth_ifname), "bcp%d", ifunit); + if (set_if_hwaddr(maclocal, eth_ifname) < 0) { + if (debug) + warn("Failed to set hardware address"); + bcp_close(f->unit, "Interface configuration failed"); + return; + } + } + + /* + * Set up /etc/ppp/eth-up environment. + */ + + /* MACLOCAL contains the MAC address of the BCP interface, if it has one. + * Otherwise, MACLOCAL is defined as an empty string. */ + if (maclocal) + slprintmac(buf, sizeof(buf), maclocal); + else + buf[0] = '\0'; + script_setenv("MACLOCAL", buf, 0); + + /* MACREMOTE contains the MAC address of the peer's BCP interface, if the + * peer published it during negotiation. Otherwise, MACREMOTE is defined + * as an empty string. */ + if (ho->neg_macaddr) + slprintmac(buf, sizeof(buf), ho->macaddr); + else + buf[0] = '\0'; + script_setenv("MACREMOTE", buf, 0); + + np_up(f->unit, PPP_BRIDGE); + bcp_is_up = 1; + + /* + * Execute the eth-up script, like this: + * /etc/ppp/eth-up interface tty speed local-IP remote-IP + */ + if (bcp_script_state == s_down && bcp_script_pid == 0) { + bcp_script_state = s_up; + bcp_script(f, _PATH_ETHUP); + } +} + + +/* + * bcp_down - BCP has gone DOWN. + * + */ +static void +bcp_down(f) + fsm *f; +{ + /* Execute the eth-down script */ + if (bcp_script_state == s_up && bcp_script_pid == 0) { + bcp_script_state = s_down; + bcp_script(f, _PATH_ETHDOWN); + } + + /* After this the "bcp%d" device will not exist. */ + sifnpmode(ifunit, PPP_BRIDGE, NPMODE_DROP); + + sifnpmode(ifunit, PPP_BPDU_IEEE, NPMODE_DROP); + + BCPDEBUG(("bcp: down")); + if (bcp_is_up) + { + bcp_is_up = 0; + np_down(f->unit, PPP_BRIDGE); + } +} + + +/* + * bcp_start - called when we want the lower layer up. + */ +static void +bcp_start(f) + fsm *f; +{ + np_start(f->unit, PPP_BRIDGE); +} + + +/* + * bcp_finished - possibly shut down the lower layers. + */ +static void +bcp_finished(f) + fsm *f; +{ + np_finished(f->unit, PPP_BRIDGE); +} + + +/* + * bcp_script_done - called when the ip-up or ip-down script + * has finished. + */ +static void +bcp_script_done(vp_f) + void *vp_f; +{ + fsm *f = vp_f; + + bcp_script_pid = 0; + switch (bcp_script_state) { + case s_up: + if (f->state != OPENED) { + bcp_script_state = s_down; + bcp_script(f, _PATH_ETHDOWN); + } + break; + case s_down: + if (f->state == OPENED) { + bcp_script_state = s_up; + bcp_script(f, _PATH_ETHUP); + } + break; + } +} + + +/* + * bcp_script - Execute a script with arguments + * bcp-interface-name phys-interface-name + */ +static void +bcp_script(f, script) + fsm *f; + char *script; +{ + char eth_ifname[16]; + char *argv[8]; + + slprintf(eth_ifname, sizeof(eth_ifname), "bcp%d", ifunit); + + argv[0] = script; + argv[1] = eth_ifname; /* bridge device (e.g. bcp<N>) */ + argv[2] = devnam; /* physical device (e.g. hdlc<N>) */ + argv[3] = NULL; + argv[4] = NULL; + argv[5] = NULL; + argv[6] = NULL; + argv[7] = NULL; + bcp_script_pid = run_program(script, argv, 0, bcp_script_done, f); +} + +/* + * bcp_printpkt - print the contents of an BCP packet. + */ +static char *bcp_codenames[] = { + "ConfReq", "ConfAck", "ConfNak", "ConfRej", + "TermReq", "TermAck", "CodeRej" +}; + +static int +bcp_printpkt(p, plen, printer, arg) + u_char *p; + int plen; + void (*printer) __P((void *, char *, ...)); + void *arg; +{ + int code, id, len, olen; + u_char *pstart, *optend; + u_short cishort; + + if (plen < HEADERLEN) + return 0; + pstart = p; + GETCHAR(code, p); + GETCHAR(id, p); + GETSHORT(len, p); + if (len < HEADERLEN || len > plen) + return 0; + + if (code >= 1 && code <= sizeof(bcp_codenames) / sizeof(char *)) + printer(arg, " %s", bcp_codenames[code-1]); + else + printer(arg, " code=0x%x", code); + printer(arg, " id=0x%x", id); + len -= HEADERLEN; + switch (code) { + case CONFREQ: + case CONFACK: + case CONFNAK: + case CONFREJ: + /* print option list */ + while (len >= 2) { + GETCHAR(code, p); + GETCHAR(olen, p); + p -= 2; + if (olen < 2 || olen > len) { + break; + } + printer(arg, " <"); + len -= olen; + optend = p + olen; + switch (code) { + case CI_BRIDGE_IDENTIFICATION: + if (olen == CILEN_BRIDGELINEID) { + p += 2; + GETSHORT(cishort, p); + printer(arg, "Bridge-ID LAN=0x%03x Bridge=0x%X", + (cishort & 0xFFF0) >> 4, + cishort & 0x000F); + } + break; + + case CI_LINE_IDENTIFICATION: + if (olen == CILEN_BRIDGELINEID) { + p += 2; + GETSHORT(cishort, p); + printer(arg, "Line-ID LAN=0x%03x Bridge=0x%X", + (cishort & 0xFFF0) >> 4, + cishort & 0x000F); + } + break; + + case CI_MAC_SUPPORT: + if (olen == CILEN_MACSUPPORT) { + p += 2; + printer(arg, "MAC-Support"); + } + break; + + case CI_TINYGRAM_COMPRESSION: + if (olen == CILEN_TINYGRAM) { + p += 2; + printer(arg, "Tinygram-Compression"); + } + break; + + case CI_LAN_IDENTIFICATION: + if (olen == CILEN_LANID) { + p += 2; + printer(arg, "LAN-ID (obsolete)"); + } + break; + + case CI_MAC_ADDRESS: + if (olen == CILEN_MACADDR) { + p += 2; + printer(arg, "MAC-Address"); + } + break; + + case CI_SPANNING_TREE_PROTOCOL: + if (olen >= CILEN_SPANTREE) { + p += 2; + printer(arg, "Spanning-Tree-Protocol (old format)"); + } + break; + + case CI_IEEE_802_TAGGED_FRAME: + if (olen == CILEN_IEEE_802_TAGGED_FRAME) { + p += 2; + printer(arg, "IEEE-802-Tagged-Frame"); + } + break; + + case CI_MANAGEMENT_INLINE: + if (olen == CILEN_VOID) { + p += 2; + printer(arg, "Management-Inline"); + } + break; + + default: + break; + } + while (p < optend) { + GETCHAR(code, p); + printer(arg, " %.2x", code); + } + printer(arg, ">"); + } + break; + + case TERMACK: + case TERMREQ: + if (len > 0 && *p >= ' ' && *p < 0x7f) { + printer(arg, " "); + print_string((char *)p, len, printer, arg); + p += len; + len = 0; + } + break; + } + + /* print the rest of the bytes in the packet */ + for (; len > 0; --len) { + GETCHAR(code, p); + printer(arg, " %.2x", code); + } + + return p - pstart; +} + +/* + * bcp_check_options - check that any IP-related options are OK, + * and assign appropriate defaults. + */ +static void +bcp_check_options() +{ +} + + diff -Naur ppp-2.4.2/pppd/bcp.h ppp-2.4.2-bcp/pppd/bcp.h --- ppp-2.4.2/pppd/bcp.h Thu Jan 1 01:00:00 1970 +++ ppp-2.4.2-bcp/pppd/bcp.h Tue Apr 5 22:26:44 2005 @@ -0,0 +1,73 @@ +/* + * bcp.h - Bridge Control Protocol definitions. + * + * Copyright (c) 2001-2004 Applied Innovation Inc. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms. The name of Applied Innovation Inc. + * may not be used to endorse or promote products derived from this + * software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +/* + * Options. + */ +#define CI_BRIDGE_IDENTIFICATION 1 +#define CI_LINE_IDENTIFICATION 2 +#define CI_MAC_SUPPORT 3 +#define CI_TINYGRAM_COMPRESSION 4 +#define CI_LAN_IDENTIFICATION 5 /* obsolete (since RFC 2878) */ +#define CI_MAC_ADDRESS 6 +#define CI_SPANNING_TREE_PROTOCOL 7 /* old format (RFC 1638) */ +#define CI_IEEE_802_TAGGED_FRAME 8 +#define CI_MANAGEMENT_INLINE 9 /* new format (RFC 2878) */ + +/* values for MAC Support */ +#define MAC_IEEE_802_3 1 +#define MAC_IEEE_802_4 2 +#define MAC_IEEE_802_5_NON 3 +#define MAC_FDDI_NON 4 +#define MAC_IEEE_802_5 11 +#define MAC_FDDI 12 + +/* Multicast bit */ +#define BCP_MULTICAST 1 + +/* values for Spanning Tree protocol */ +#define SPAN_NONE 0 +#define SPAN_IEEE_802_1D 1 +#define SPAN_IEEE_802_1G 2 +#define SPAN_IBM 3 +#define SPAN_DEC 4 +#define MAX_SPANTREE SPAN_DEC + +#define ETH_ALEN 6 /* ethernet address length */ + +typedef struct bcp_options { + u_int16_t lan_bridge_segno; + u_char macsupport[6]; /* MAC support */ + u_char tinygram; /* Tinygram Compression 1=enable, 2=disable */ + u_char lanid; /* Lan ID 1=enable, 2=disable*/ + u_char macaddr[ETH_ALEN]; /* MAC Address */ + u_char spantree; /* Spanning Tree Protocol */ + bool neg_bridgeid; + bool neg_lineid; + bool neg_macsupport; + bool neg_tinygram; + bool neg_lanid; + bool neg_macaddr; + bool neg_spantree; + bool neg_mgmt_inline; +} bcp_options; + +extern fsm bcp_fsm[]; +extern bcp_options bcp_wantoptions[]; +extern bcp_options bcp_gotoptions[]; +extern bcp_options bcp_allowoptions[]; +extern bcp_options bcp_hisoptions[]; + +extern struct protent bcp_protent; diff -Naur ppp-2.4.2/pppd/fsm.c ppp-2.4.2-bcp/pppd/fsm.c --- ppp-2.4.2/pppd/fsm.c Sun Jun 29 12:06:14 2003 +++ ppp-2.4.2-bcp/pppd/fsm.c Tue Apr 5 22:26:44 2005 @@ -218,6 +218,8 @@ switch( f->state ){ case STARTING: f->state = INITIAL; + if( f->callbacks->finished ) + (*f->callbacks->finished)(f); break; case STOPPED: f->state = CLOSED; diff -Naur ppp-2.4.2/pppd/ipcp.c ppp-2.4.2-bcp/pppd/ipcp.c --- ppp-2.4.2/pppd/ipcp.c Tue Jan 13 04:59:06 2004 +++ ppp-2.4.2-bcp/pppd/ipcp.c Tue Apr 5 22:26:44 2005 @@ -108,6 +108,7 @@ static int ipcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ static void ipcp_up __P((fsm *)); /* We're UP */ static void ipcp_down __P((fsm *)); /* We're DOWN */ +static void ipcp_start __P((fsm *)); /* Need lower layer */ static void ipcp_finished __P((fsm *)); /* Don't need lower layer */ fsm ipcp_fsm[NUM_PPP]; /* IPCP fsm structure */ @@ -122,7 +123,7 @@ ipcp_reqci, /* Request peer's Configuration Information */ ipcp_up, /* Called when fsm reaches OPENED state */ ipcp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ + ipcp_start, /* Called when we want the lower layer up */ ipcp_finished, /* Called when we want the lower layer down */ NULL, /* Called when Protocol-Reject received */ NULL, /* Retransmission is necessary */ @@ -1886,6 +1887,17 @@ default_route_set[unit] = 0; } cifaddr(unit, ouraddr, hisaddr); +} + + +/* + * ipcp_start - called when we want the lower layer up. + */ +static void +ipcp_start(f) + fsm *f; +{ + np_start(f->unit, PPP_IP); } diff -Naur ppp-2.4.2/pppd/ipv6cp.c ppp-2.4.2-bcp/pppd/ipv6cp.c --- ppp-2.4.2/pppd/ipv6cp.c Tue Jan 13 04:59:37 2004 +++ ppp-2.4.2-bcp/pppd/ipv6cp.c Tue Apr 5 22:26:44 2005 @@ -191,6 +191,7 @@ static int ipv6cp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ static void ipv6cp_up __P((fsm *)); /* We're UP */ static void ipv6cp_down __P((fsm *)); /* We're DOWN */ +static void ipv6cp_start __P((fsm *)); /* Need lower layer */ static void ipv6cp_finished __P((fsm *)); /* Don't need lower layer */ fsm ipv6cp_fsm[NUM_PPP]; /* IPV6CP fsm structure */ @@ -205,7 +206,7 @@ ipv6cp_reqci, /* Request peer's Configuration Information */ ipv6cp_up, /* Called when fsm reaches OPENED state */ ipv6cp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ + ipv6cp_start, /* Called when we want the lower layer up */ ipv6cp_finished, /* Called when we want the lower layer down */ NULL, /* Called when Protocol-Reject received */ NULL, /* Retransmission is necessary */ @@ -1352,6 +1353,17 @@ eui64_t hisid; { cif6addr(unit, ourid, hisid); +} + + +/* + * ipv6cp_start - called when we want the lower layer up. + */ +static void +ipv6cp_start(f) + fsm *f; +{ + np_start(f->unit, PPP_IPV6); } diff -Naur ppp-2.4.2/pppd/ipxcp.c ppp-2.4.2-bcp/pppd/ipxcp.c --- ppp-2.4.2/pppd/ipxcp.c Tue Nov 18 11:42:56 2003 +++ ppp-2.4.2-bcp/pppd/ipxcp.c Tue Apr 5 22:26:44 2005 @@ -87,6 +87,7 @@ static int ipxcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ static void ipxcp_up __P((fsm *)); /* We're UP */ static void ipxcp_down __P((fsm *)); /* We're DOWN */ +static void ipxcp_start __P((fsm *)); /* Need lower layer */ static void ipxcp_finished __P((fsm *)); /* Don't need lower layer */ static void ipxcp_script __P((fsm *, char *)); /* Run an up/down script */ @@ -102,7 +103,7 @@ ipxcp_reqci, /* Request peer's Configuration Information */ ipxcp_up, /* Called when fsm reaches OPENED state */ ipxcp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ + ipxcp_start, /* Called when we want the lower layer up */ ipxcp_finished, /* Called when we want the lower layer down */ NULL, /* Called when Protocol-Reject received */ NULL, /* Retransmission is necessary */ @@ -1377,6 +1378,17 @@ sifnpmode(f->unit, PPP_IPX, NPMODE_DROP); sifdown(f->unit); ipxcp_script (f, _PATH_IPXDOWN); +} + + +/* + * ipxcp_start - called when we want the lower layer up. + */ +static void +ipxcp_start(f) + fsm *f; +{ + np_start(f->unit, PPP_IPX); } diff -Naur ppp-2.4.2/pppd/main.c ppp-2.4.2-bcp/pppd/main.c --- ppp-2.4.2/pppd/main.c Tue Jan 13 05:00:34 2004 +++ ppp-2.4.2-bcp/pppd/main.c Fri Apr 8 01:52:48 2005 @@ -68,6 +68,7 @@ #include "pppd.h" #include "magic.h" #include "fsm.h" +#include "bcp.h" #include "lcp.h" #include "ipcp.h" #ifdef INET6 @@ -258,6 +259,7 @@ &atcp_protent, #endif &eap_protent, + &bcp_protent, NULL }; diff -Naur ppp-2.4.2/pppd/pathnames.h ppp-2.4.2-bcp/pppd/pathnames.h --- ppp-2.4.2/pppd/pathnames.h Sat Nov 9 12:24:42 2002 +++ ppp-2.4.2-bcp/pppd/pathnames.h Tue Apr 5 22:26:44 2005 @@ -30,6 +30,8 @@ #define _PATH_CONNERRS _ROOT_PATH "/etc/ppp/connect-errors" #define _PATH_PEERFILES _ROOT_PATH "/etc/ppp/peers/" #define _PATH_RESOLV _ROOT_PATH "/etc/ppp/resolv.conf" +#define _PATH_ETHUP _ROOT_PATH "/etc/ppp/eth-up" +#define _PATH_ETHDOWN _ROOT_PATH "/etc/ppp/eth-down" #define _PATH_USEROPT ".ppprc" #define _PATH_PSEUDONYM ".ppp_pseudonym" diff -Naur ppp-2.4.2/pppd/pppd.h ppp-2.4.2-bcp/pppd/pppd.h --- ppp-2.4.2/pppd/pppd.h Mon Apr 7 02:01:46 2003 +++ ppp-2.4.2-bcp/pppd/pppd.h Wed Apr 6 23:52:28 2005 @@ -518,6 +518,7 @@ void continue_networks __P((int)); /* start network [ip, etc] control protos */ void np_up __P((int, int)); /* a network protocol has come up */ void np_down __P((int, int)); /* a network protocol has gone down */ +void np_start __P((int, int)); /* a network protocol needs link */ void np_finished __P((int, int)); /* a network protocol no longer needs link */ void auth_peer_fail __P((int, int)); /* peer failed to authenticate itself */ @@ -640,6 +641,7 @@ int sipxfaddr __P((int, unsigned long, unsigned char *)); int cipxfaddr __P((int)); #endif +int set_if_hwaddr __P((const u_char *addr, const char *name)); int get_if_hwaddr __P((u_char *addr, char *name)); char *get_first_ethernet __P((void)); @@ -788,6 +790,7 @@ #ifdef DEBUGALL #define DEBUGMAIN 1 #define DEBUGFSM 1 +#define DEBUGBCP 1 #define DEBUGLCP 1 #define DEBUGIPCP 1 #define DEBUGIPV6CP 1 @@ -821,6 +824,12 @@ #define FSMDEBUG(x) if (debug) dbglog x #else #define FSMDEBUG(x) +#endif + +#ifdef DEBUGBCP +#define BCPDEBUG(x) if (debug) dbglog x +#else +#define BCPDEBUG(x) #endif #ifdef DEBUGLCP diff -Naur ppp-2.4.2/pppd/sys-linux.c ppp-2.4.2-bcp/pppd/sys-linux.c --- ppp-2.4.2/pppd/sys-linux.c Tue Jan 13 05:05:20 2004 +++ ppp-2.4.2-bcp/pppd/sys-linux.c Thu Apr 7 00:02:12 2005 @@ -1840,6 +1840,30 @@ } /* + * set_if_hwaddr - set the hardware address for the specified + * network interface device. + */ +int +set_if_hwaddr(const u_char *addr, const char *name) +{ + struct ifreq ifreq; + int ret, sock_fd; + + sock_fd = socket(AF_INET, SOCK_DGRAM, 0); + if (sock_fd < 0) + return 0; + memset(&ifreq.ifr_hwaddr, 0, sizeof(struct sockaddr)); + strlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); + ret = ioctl(sock_fd, SIOCGIFHWADDR, &ifreq); + if (ret >= 0) { + memcpy(ifreq.ifr_hwaddr.sa_data, addr, 6); + ret = ioctl(sock_fd, SIOCSIFHWADDR, &ifreq); + } + close(sock_fd); + return ret; +} + +/* * get_if_hwaddr - get the hardware address for the specified * network interface device. */ ------------------- END SNIP ----------------------
