// L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.10 2004/07/07 09:09:53 bodea Exp $
+// $Id: l2tpns.h,v 1.28 2004/11/03 13:23:59 bodea Exp $
#ifndef __L2TPNS_H__
#define __L2TPNS_H__
#include <sys/types.h>
#include <libcli.h>
-#define VERSION "2.0.0"
+#define VERSION "2.0.3"
// Limits
#define MAXTUNNEL 500 // could be up to 65535
#define RADIUS_SHIFT 5
#define RADIUS_MASK ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT)))
-#define MAXRADIUS ((2 << (RADIUS_SHIFT - 1)) * 255)
+#define MAXRADIUS ((unsigned long)(1L << RADIUS_SHIFT) * 255)
#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 MAXETHER (1500+18) // max packet we try sending to tap
+#define MAXETHER (1500+18) // max packet we try sending to tun
#define MAXTEL 96 // telephone number
#define MAXPLUGINS 20 // maximum number of plugins to load
#define MAXRADSERVER 10 // max radius servers
#define MAX_LOG_LENGTH 512 // Maximum size of log message
#define ECHO_TIMEOUT 60 // Time between last packet sent and LCP ECHO generation
#define IDLE_TIMEOUT 240 // Time between last packet sent and LCP ECHO generation
+#define BUSY_WAIT_TIME 3000 // 5 minutes in 1/10th seconds to wait for radius to cleanup on shutdown
// Constants
-#include "config.h"
-#ifndef PLUGINDIR
-#define PLUGINDIR LIBDIR // Plugins
+#ifndef ETCDIR
+#define ETCDIR "/etc/l2tpns"
#endif
-#ifndef PLUGINCONF
-#define PLUGINCONF ETCDIR // Plugin config dir
+#ifndef LIBDIR
+#define LIBDIR "/usr/lib/l2tpns"
#endif
-#ifndef DATADIR
-#define DATADIR "/tmp"
+#ifndef STATEDIR
+#define STATEDIR "/var/lib/l2tpns"
+#endif
+
+#ifndef PLUGINDIR
+#define PLUGINDIR LIBDIR // Plugins
+#endif
+
+#ifndef PLUGINCONF
+#define PLUGINCONF ETCDIR // Plugin config dir
#endif
#ifndef FLASHDIR
#define FLASHDIR ETCDIR
#endif
-#define TAPDEVICE "/dev/net/tun"
+#ifndef DATADIR
+#define DATADIR STATEDIR
+#endif
+
+#define TUNDEVICE "/dev/net/tun"
#define STATEFILE DATADIR "/state.dump" // State dump file
#define CONFIGFILE FLASHDIR "/startup-config" // Configuration file
#define CLIUSERS FLASHDIR "/users" // CLI Users file
#define ACCT_TIME 3000 // 5 minute accounting interval
#define L2TPPORT 1701 // L2TP port
#define RADPORT 1645 // old radius port...
-#define RADAPORT 1646 // old radius accounting port
#define PKTARP 0x0806 // ARP packet type
#define PKTIP 0x0800 // IP packet type
#define PSEUDOMAC 0x0200 // pseudo MAC prefix (local significant MAC)
ProtocolRej,
EchoReq,
EchoReply,
- DiscardRequest
+ DiscardRequest,
+ IdentRequest
};
// Types
typedef u32 clockt;
typedef u8 hasht[16];
+// CLI actions
+struct cli_session_actions {
+ char action;
+ ipt snoop_ip;
+ u16 snoop_port;
+ int throttle_in;
+ int throttle_out;
+};
+
+#define CLI_SESS_KILL 0x01
+#define CLI_SESS_SNOOP 0x02
+#define CLI_SESS_NOSNOOP 0x04
+#define CLI_SESS_THROTTLE 0x08
+#define CLI_SESS_NOTHROTTLE 0x10
+
+struct cli_tunnel_actions {
+ char action;
+};
+
+#define CLI_TUN_KILL 0x01
+
// dump header: update number if internal format changes
#define DUMP_MAGIC "L2TPNS#" VERSION "#"
{
sessionidt next; // next session in linked list
sessionidt far; // far end session ID
- tunnelidt tunnel; // tunnel ID
+ tunnelidt tunnel; // near end tunnel ID
ipt ip; // IP of session set by RADIUS response (host byte order).
int ip_pool_index; // index to IP pool
- unsigned long sid; // session id for hsddb
+ unsigned long unique_id; // unique session id
u16 nr; // next receive
u16 ns; // next send
u32 magic; // ppp magic number
u32 total_cin; // This counter is never reset while a session is open
u32 total_cout; // This counter is never reset while a session is open
u32 id; // session id
- u32 throttle; // non-zero if this session is throttled.
+ u16 throttle_in; // upstream throttle rate (kbps)
+ u16 throttle_out; // downstream throttle rate
clockt opened; // when started
clockt die; // being closed, when to finally free
time_t last_packet; // Last packet from the user (used for idle timeouts)
u16 tbf_in; // filter bucket for throttling in from the user.
u16 tbf_out; // filter bucket for throttling out to the user.
u8 l2tp_flags; // various bit flags from the ICCN on the l2tp tunnel.
+ u8 reserved_old_snoop; // No longer used - remove at some time
u8 walled_garden; // is this session gardened?
u8 flags1; // additional flags (currently unused);
char random_vector[MAXTEL];
u32 flags; // Various session flags.
ipt snoop_ip; // Interception destination IP
u16 snoop_port; // Interception destination port
- char reserved[28]; // Space to expand structure without changing HB_VERSION
+ u16 sid; // near end session id.
+ char reserved[20]; // Space to expand structure without changing HB_VERSION
}
sessiont;
#define SESSIONPFC 1 // PFC negotiated flags
#define SESSIONACFC 2 // ACFC negotiated flags
+#define SESSIONLCPACK 4 // LCP negotiated
// 168 bytes per tunnel
typedef struct tunnels
time_t start_time;
time_t last_reset;
- unsigned long tap_rx_packets;
- unsigned long tap_tx_packets;
- unsigned long tap_rx_bytes;
- unsigned long tap_tx_bytes;
- unsigned long tap_rx_errors;
- unsigned long tap_tx_errors;
+ unsigned long tun_rx_packets;
+ unsigned long tun_tx_packets;
+ unsigned long tun_rx_bytes;
+ unsigned long tun_tx_bytes;
+ unsigned long tun_rx_errors;
+ unsigned long tun_tx_errors;
unsigned long tunnel_rx_packets;
unsigned long tunnel_tx_packets;
unsigned long tunnel_retries;
unsigned long radius_retries;
- unsigned long arp_errors;
- unsigned long arp_replies;
- unsigned long arp_discarded;
unsigned long arp_sent;
- unsigned long arp_recv;
unsigned long packets_snooped;
unsigned long c_forwarded;
unsigned long recv_forward;
#ifdef STATISTICS
- unsigned long call_processtap;
- unsigned long call_processarp;
+ unsigned long call_processtun;
unsigned long call_processipout;
unsigned long call_processudp;
unsigned long call_sessionbyip;
int debug; // debugging level
time_t start_time; // time when l2tpns was started
char bandwidth[256]; // current bandwidth
+ char pid_file[256]; // file to write PID to on startup
+ int wrote_pid;
clockt current_time; // 1/10ths of a second since the process started.
// means that we can only run a given process
// for 13 years without re-starting!
int cleanup_interval; // interval between regular cleanups (in seconds)
int multi_read_count; // amount of packets to read per fd in processing loop
- char tapdevice[10]; // tap device name
+ char tundevice[10]; // tun device name
char log_filename[128];
char l2tpsecret[64];
char radiussecret[64];
int radius_accounting;
ipt radiusserver[MAXRADSERVER]; // radius servers
+ u16 radiusport[MAXRADSERVER]; // radius base ports
u8 numradiusservers; // radius server count
short num_radfds; // Number of radius filehandles allocated
ipt default_dns1, default_dns2;
- unsigned long rl_rate;
+ unsigned long rl_rate; // default throttle rate
+ int num_tbfs; // number of throttle buckets
+
int save_state;
char accounting_dir[128];
ipt bind_address;
char old_plugins[64][MAXPLUGINS];
int next_tbf; // Next HTB id available to use
- int scheduler_fifo; // If 1, will force scheduler to use SCHED_FIFO.
- // Don't use this unless you have a dual processor machine!
- int icmp_rate; // Max number of ICMP unreachable per second to send
+ int scheduler_fifo; // If the system has multiple CPUs, use FIFO scheduling policy for this process.
+ int lock_pages; // Lock pages into memory.
+ int icmp_rate; // Max number of ICMP unreachable per second to send>
u32 cluster_address; // Multicast address of cluster.
// Send to this address to have everyone hear.
char *key;
int offset;
int size;
- enum { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IP } type;
+ enum { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IP, MAC } type;
};
// arp.c
u16 radiusnew(sessionidt s);
void radiusclear(u16 r, sessionidt s);
-// throttle.c
-int throttle_session(sessionidt s, int throttle);
-
-
-// rl.c
-void init_rl();
-u16 rl_create_tbf();
-u16 rl_get_tbf();
-void rl_done_tbf(u16 t);
-void rl_destroy_tbf(u16 t);
-
// l2tpns.c
clockt now(void);
clockt backoff(u8 try);
void routeset(sessionidt, ipt ip, ipt mask, ipt gw, u8 add);
-void inittap(void);
+void inittun(void);
void initudp(void);
-void initdata(void);
+void initdata(int optdebug, char *optconfig);
void initippool();
sessionidt sessionbyip(ipt ip);
sessionidt sessionbyuser(char *username);
void processipout(u8 * buf, int len);
void processarp(u8 * buf, int len);
void processudp(u8 * buf, int len, struct sockaddr_in *addr);
-void processtap(u8 * buf, int len);
+void processtun(u8 * buf, int len);
void processcontrol(u8 * buf, int len, struct sockaddr_in *addr);
int assign_ip_address(sessionidt s);
void free_ip_address(sessionidt s);
int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc);
int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc);
-#define log _log
-#ifndef log_hex
-#define log_hex(a,b,c,d) do{if (a <= config->debug) _log_hex(a,0,0,0,b,c,d);}while (0)
-#endif
+#undef log
+#undef log_hex
+#define log(D, a, s, t, f, ...) ({ if (D <= config->debug) _log(D, a, s, t, f, ## __VA_ARGS__); })
+#define log_hex(D, t, d, s) ({ if (D <= config->debug) _log_hex(D, t, d, s); })
+
void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 5, 6)));
-void _log_hex(int level, ipt address, sessionidt s, tunnelidt t, const char *title, const char *data, int maxsize);
+void _log_hex(int level, const char *title, const char *data, int maxsize);
+
void build_chap_response(char *challenge, u8 id, u16 challenge_length, char **challenge_response);
int sessionsetup(tunnelidt t, sessionidt s);
int cluster_send_session(int s);
void fix_address_pool(int sid);
void rebuild_address_pool(void);
void send_ipin(sessionidt s, u8 * buf, int len);
-int throttle_session(sessionidt s, int throttle);
+void throttle_session(sessionidt s, int rate_in, int rate_out);
int load_session(sessionidt, sessiont *);
void become_master(void); // We're the master; kick off any required master initializations.
extern tunnelt *tunnel;
extern struct configt *config;
extern time_t basetime; // Time when this process started.
extern time_t time_now; // Seconds since EPOCH.
-extern u32 last_sid;
+extern u32 last_id;
extern struct Tstats *_statistics;
extern ipt my_address;
extern int tun_write(u8 *data, int size);
+extern int clifd;
#define TIME (config->current_time)
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