X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/9f4e77cdac49f08e320e0d8ae9e66876fa51dedf..57a847d9a36386aefb1d61bdb40399d9e8f5b463:/l2tpns.h?ds=inline

diff --git a/l2tpns.h b/l2tpns.h
index e901d04..8997f78 100644
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -1,11 +1,10 @@
 // L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.95 2005-10-12 07:16:13 bodea Exp $
+// $Id: l2tpns.h,v 1.114 2006-04-23 23:18:32 bodea Exp $
 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
 
 #include <netinet/in.h>
-#include <execinfo.h>
 #include <stdio.h>
 #include <signal.h>
 #include <stdlib.h>
@@ -15,7 +14,7 @@
 #include <sys/types.h>
 #include <libcli.h>
 
-#define VERSION	"2.1.10"
+#define VERSION	"2.1.19"
 
 // Limits
 #define MAXTUNNEL	500		// could be up to 65535
@@ -23,24 +22,24 @@
 #define MAXTBFS		6000		// Maximum token bucket filters. Might need up to 2 * session.
 
 #define RADIUS_SHIFT	6
-#define	RADIUS_FDS	(1 << RADIUS_SHIFT)
+#define RADIUS_FDS	(1 << RADIUS_SHIFT)
 #define RADIUS_MASK	((1 << RADIUS_SHIFT) - 1)
 #define MAXRADIUS	(1 << (8 + RADIUS_SHIFT))
 
 #define T_UNDEF		(0xffff)	// A tunnel ID that won't ever be used. Mark session as undefined.
 #define T_FREE		(0)		// A tunnel ID that won't ever be used. Mark session as free.
 
-#define	MAXCONTROL	1000		// max length control message we ever send...
+#define MAXCONTROL	1000		// max length control message we ever send...
 #define MINMTU		576		// minimum recommended MTU (rfc1063)
-#define PPPMTU		1500		// default PPP MTU
 #define MAXMTU		2600		// arbitrary maximum MTU
-#define	MAXETHER	(MAXMTU+18)	// max packet we try sending to tun
-#define	MAXTEL		96		// telephone number
+#define PPPoE_MRU	1492		// maximum PPPoE MRU (rfc2516: 1500 less PPPoE header (6) and PPP protocol ID (2))
+#define MAXETHER	(MAXMTU+18)	// max packet we try sending to tun
+#define MAXTEL		96		// telephone number
 #define MAXUSER		128		// username
 #define MAXPASS		128		// password
 #define MAXPLUGINS	20		// maximum number of plugins to load
 #define MAXRADSERVER	10		// max radius servers
-#define	MAXROUTE	10		// max static routes per session
+#define MAXROUTE	10		// max static routes per session
 #define MAXIPPOOL	131072		// max number of ip addresses in pool
 #define RINGBUFFER_SIZE	10000		// Number of ringbuffer entries to allocate
 #define MAX_LOG_LENGTH	512		// Maximum size of log message
@@ -76,18 +75,18 @@
 #define IPPOOLFILE	FLASHDIR "/ip_pool"		// Address pool configuration
 #define ACCT_TIME	3000				// 5 minute accounting interval
 #define ACCT_SHUT_TIME	600				// 1 minute for counters of shutdown sessions
-#define	L2TPPORT	1701				// L2TP port
+#define L2TPPORT	1701				// L2TP port
 #define RADPORT		1645				// old radius port...
 #define DAEPORT		3799				// DAE port
-#define	PKTARP		0x0806				// ARP packet type
-#define	PKTIP		0x0800				// IPv4 packet type
-#define	PKTIPV6		0x86DD				// IPv6 packet type
-#define	PPPPAP		0xC023
-#define	PPPCHAP		0xC223
-#define	PPPLCP		0xC021
-#define	PPPIPCP		0x8021
-#define	PPPIPV6CP	0x8057
-#define	PPPCCP		0x80FD
+#define PKTARP		0x0806				// ARP packet type
+#define PKTIP		0x0800				// IPv4 packet type
+#define PKTIPV6		0x86DD				// IPv6 packet type
+#define PPPPAP		0xC023
+#define PPPCHAP		0xC223
+#define PPPLCP		0xC021
+#define PPPIPCP		0x8021
+#define PPPIPV6CP	0x8057
+#define PPPCCP		0x80FD
 #define PPPIP		0x0021
 #define PPPIPV6		0x0057
 #define PPPMP		0x003D
@@ -148,7 +147,23 @@ enum {
 
 // reset state machine counters
 #define initialise_restart_count(_s, _fsm)			\
-	sess_local[_s]._fsm.conf_sent = sess_local[_s]._fsm.nak_sent
+	sess_local[_s]._fsm.conf_sent =				\
+	sess_local[_s]._fsm.nak_sent = 0
+
+// no more attempts
+#define zero_restart_count(_s, _fsm) ({				\
+	sess_local[_s]._fsm.conf_sent =				\
+		config->ppp_max_configure;			\
+	sess_local[_s]._fsm.restart =				\
+		time_now + config->ppp_restart_time;		\
+})
+
+// increment ConfReq counter and reset timer
+#define restart_timer(_s, _fsm) ({				\
+	sess_local[_s]._fsm.conf_sent++;			\
+	sess_local[_s]._fsm.restart =				\
+		time_now + config->ppp_restart_time;		\
+})
 
 // stop timer on change to state where timer does not run
 #define change_state(_s, _fsm, _new) ({				\
@@ -221,20 +236,19 @@ typedef struct
 	sessionidt next;		// next session in linked list
 	sessionidt far;			// far end session ID
 	tunnelidt tunnel;		// near end tunnel ID
-	uint8_t l2tp_flags;		// various bit flags from the ICCN on the l2tp tunnel.
+	uint8_t flags;			// session flags: see SESSION_*
 	struct {
 		uint8_t phase;		// PPP phase
 		uint8_t lcp:4;		//   LCP    state
 		uint8_t ipcp:4;		//   IPCP   state
 		uint8_t ipv6cp:4;	//   IPV6CP state
 		uint8_t ccp:4;		//   CCP    state
-		uint8_t pad;		// unused
 	} ppp;
+	char reserved_1[2];		// unused: padding
 	in_addr_t ip;			// IP of session set by RADIUS response (host byte order).
 	int ip_pool_index;		// index to IP pool
 	uint32_t unique_id;		// unique session id
-	uint16_t nr;			// next receive
-	uint16_t ns;			// next send
+	char reserved_2[4];		// unused: was ns/nr
 	uint32_t magic;			// ppp magic number
 	uint32_t pin, pout;		// packet counts
 	uint32_t cin, cout;		// byte counts
@@ -264,7 +278,7 @@ typedef struct
 	uint8_t walled_garden;		// is this session gardened?
 	uint8_t ipv6prefixlen;		// IPv6 route prefix length
 	struct in6_addr ipv6route;	// Static IPv6 route
-	char reserved[11];		// Space to expand structure without changing HB_VERSION
+	char reserved_3[11];		// Space to expand structure without changing HB_VERSION
 }
 sessiont;
 
@@ -307,10 +321,15 @@ typedef struct
 
 	// interim RADIUS
 	time_t last_interim;
+
+	// last LCP Echo
+	time_t last_echo;
 } sessionlocalt;
 
-#define	SESSIONPFC	1	// PFC negotiated flags
-#define	SESSIONACFC	2	// ACFC negotiated flags
+// session flags
+#define SESSION_PFC	(1 << 0)	// use Protocol-Field-Compression
+#define SESSION_ACFC	(1 << 1)	// use Address-and-Control-Field-Compression
+#define SESSION_STARTED	(1 << 2)	// RADIUS Start record sent
 
 // 168 bytes per tunnel
 typedef struct
@@ -335,7 +354,7 @@ typedef struct
 }
 tunnelt;
 
-// 160 bytes per radius session
+// 164 bytes per radius session
 typedef struct			// outstanding RADIUS requests
 {
 	sessionidt session;	// which session this applies to
@@ -346,6 +365,8 @@ typedef struct			// outstanding RADIUS requests
 	uint8_t try;		// which try we are on
 	uint8_t state;		// state of radius requests
 	uint8_t chap;		// set if CHAP used (is CHAP identifier)
+	uint8_t term_cause;	// Stop record: Acct-Terminate-Cause
+	char const *term_msg;	//   terminate reason
 }
 radiust;
 
@@ -603,7 +624,7 @@ typedef struct
 #endif
 } configt;
 
-enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6, MAC };
+enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };
 typedef struct
 {
 	char *key;
@@ -664,6 +685,36 @@ typedef struct
 	int used;		// session ref count
 } ip_filtert;
 
+// CDN result/error codes
+#define CDN_NONE			0, 0
+#define CDN_TRY_ANOTHER			2, 7
+#define CDN_ADMIN_DISC			3, 0
+#define CDN_UNAVAILABLE			4, 0
+
+// RADIUS Acct-Terminate-Cause values
+#define TERM_USER_REQUEST		1
+#define TERM_LOST_CARRIER		2
+#define TERM_LOST_SERVICE		3
+#define TERM_IDLE_TIMEOUT		4
+#define TERM_SESSION_TIMEOUT		5
+#define TERM_ADMIN_RESET		6
+#define TERM_ADMIN_REBOOT		7
+#define TERM_PORT_ERROR			8
+#define TERM_NAS_ERROR			9
+#define TERM_NAS_REQUEST		10
+#define TERM_NAS_REBOOT			11
+#define TERM_PORT_UNNEEDED		12
+#define TERM_PORT_PREEMPTED		13
+#define TERM_PORT_SUSPENDED		14
+#define TERM_SERVICE_UNAVAILABLE	15
+#define TERM_CALLBACK			16
+#define TERM_USER_ERROR			17
+#define TERM_HOST_REQUEST		18
+#define TERM_SUPPLICANT_RESTART		19
+#define TERM_REAUTHENTICATION_FAILURE	20
+#define TERM_PORT_REINIT		21
+#define TERM_PORT_DISABLED		22
+
 // arp.c
 void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip);
 
@@ -683,6 +734,7 @@ uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelid
 void sendlcp(sessionidt s, tunnelidt t);
 void send_ipin(sessionidt s, uint8_t *buf, int len);
 void sendccp(sessionidt s, tunnelidt t);
+void protoreject(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint16_t proto);
 
 
 // radius.c
@@ -692,7 +744,7 @@ void processrad(uint8_t *buf, int len, char socket_index);
 void radiusretry(uint16_t r);
 uint16_t radiusnew(sessionidt s);
 void radiusclear(uint16_t r, sessionidt s);
-void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen);
+void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struct in_addr *local);
 
 
 // l2tpns.c
@@ -705,7 +757,7 @@ sessionidt sessionbyuser(char *username);
 void increment_counter(uint32_t *counter, uint32_t *wrap, uint32_t delta);
 void random_data(uint8_t *buf, int len);
 void sessionkill(sessionidt s, char *reason);
-void sessionshutdown(sessionidt s, char *reason, int result, int error);
+void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_error, int term_cause);
 void filter_session(sessionidt s, int filter_in, int filter_out);
 void send_garp(in_addr_t ip);
 void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);
@@ -729,6 +781,7 @@ int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc
 void _log(int level, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 4, 5)));
 void _log_hex(int level, const char *title, const uint8_t *data, int maxsize);
 
+
 int sessionsetup(sessionidt s, tunnelidt t);
 int run_plugins(int plugin_type, void *data);
 void rebuild_address_pool(void);
@@ -754,21 +807,6 @@ extern sessionlocalt *sess_local;
 extern ippoolt *ip_address_pool;
 #define sessionfree (session[0].next)
 
-#define log_backtrace(count, max) \
-if (count++ < max) { \
-	void *array[20]; \
-	char **strings; \
-	int size, i; \
-	LOG(0, 0, t, "Backtrace follows:\n"); \
-	size = backtrace(array, 10); \
-	strings = backtrace_symbols(array, size); \
-	if (strings) for (i = 0; i < size; i++) \
-	{ \
-		LOG(0, 0, t, " %s\n", strings[i]); \
-	} \
-	free(strings); \
-}
-
 
 extern configt *config;
 extern time_t basetime;		// Time when this process started.