X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/c239d4b22829335fda98b66ce045a3f624436eeb..c66fc8c6b90e65da770cfd71d362f19e7357d491:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 653364c..723579f 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -1,5 +1,5 @@ // L2TPNS Global Stuff -// $Id: l2tpns.h,v 1.7 2004-06-23 03:52:24 fred_nerk Exp $ +// $Id: l2tpns.h,v 1.28 2004-11-03 13:23:59 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@ -14,9 +14,8 @@ #include #include #include -#include "config.h" -#define VERSION "2.0.0" +#define VERSION "2.0.3" // Limits #define MAXTUNNEL 500 // could be up to 65535 @@ -25,13 +24,13 @@ #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 @@ -41,26 +40,38 @@ #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 -#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" -#define UDP 17 +#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 @@ -68,7 +79,6 @@ #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) @@ -92,7 +102,8 @@ enum ProtocolRej, EchoReq, EchoReply, - DiscardRequest + DiscardRequest, + IdentRequest }; // Types @@ -106,6 +117,27 @@ typedef u16 tunnelidt; 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 "#" @@ -125,15 +157,14 @@ typedef struct controls // control message } controlt; -// 336 bytes per session typedef struct sessions { 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 @@ -142,7 +173,8 @@ typedef struct sessions 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) @@ -153,6 +185,7 @@ typedef struct sessions 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]; @@ -165,7 +198,8 @@ typedef struct sessions 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; @@ -178,6 +212,7 @@ typedef struct { #define SESSIONPFC 1 // PFC negotiated flags #define SESSIONACFC 2 // ACFC negotiated flags +#define SESSIONLCPACK 4 // LCP negotiated // 168 bytes per tunnel typedef struct tunnels @@ -272,12 +307,12 @@ struct Tstats 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; @@ -289,11 +324,7 @@ struct Tstats 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; @@ -311,9 +342,8 @@ struct Tstats unsigned long c_forwarded; unsigned long recv_forward; -#ifdef STAT_CALLS - unsigned long call_processtap; - unsigned long call_processarp; +#ifdef STATISTICS + unsigned long call_processtun; unsigned long call_processipout; unsigned long call_processudp; unsigned long call_sessionbyip; @@ -343,11 +373,19 @@ struct Tstats }; #ifdef STATISTICS -#define STAT(x) _statistics->x++ -#define INC_STAT(x,y) _statistics->x += y -#define GET_STAT(x) _statistics->x -#define SET_STAT(x, y) _statistics->x = y + +#ifdef STAT_CALLS +#define CSTAT(x) STAT(x) #else +#define CSTAT(x) +#endif + +#define STAT(x) (_statistics->x++) +#define INC_STAT(x,y) (_statistics->x += (y)) +#define GET_STAT(x) (_statistics->x) +#define SET_STAT(x, y) (_statistics->x = (y)) +#else +#define CSTAT(x) #define STAT(x) #define INC_STAT(x,y) #define GET_STAT(x) 0 @@ -359,26 +397,33 @@ struct configt int debug; // debugging level time_t start_time; // time when l2tpns was started char bandwidth[256]; // current bandwidth - clockt current_time; + 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! char config_file[128]; int reload_config; // flag to re-read config (set by cli) 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; @@ -390,16 +435,16 @@ struct configt 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. + u32 cluster_address; // Multicast address of cluster. // Send to this address to have everyone hear. char cluster_interface[64]; // Which interface to listen for multicast on. int cluster_iam_master; // Are we the cluster master??? int cluster_iam_uptodate; // Set if we've got a full set of state from the master. - u32 cluster_master_address; // The network address of the cluster master. + u32 cluster_master_address; // The network address of the cluster master. // Zero if i am the cluster master. int cluster_seq_number; // Sequence number of the next heartbeat we'll send out // (or the seq number we're next expecting if we're a slave). @@ -410,6 +455,9 @@ struct configt clockt cluster_last_hb; // Last time we saw a heartbeat from the master. int cluster_num_changes; // Number of changes queued. + int cluster_hb_interval; // How often to send a heartbeat. + int cluster_hb_timeout; // How many missed heartbeats trigger an election. + #ifdef BGP u16 as_number; char bgp_peer[2][64]; @@ -422,7 +470,7 @@ struct config_descriptt 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 @@ -451,25 +499,14 @@ void radiusretry(u16 r); 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); @@ -491,7 +528,7 @@ void sendipcp(tunnelidt t, sessionidt s); 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); @@ -502,20 +539,23 @@ int cmd_show_ipcache(struct cli_def *cli, char *command, char **argv, int argc); 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); int cluster_send_tunnel(int t); int cluster_send_goodbye(); -void init_cli(); +void init_cli(char *hostname); void cli_do_file(FILE *fh); void cli_do(int sockfd); +int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...); #ifdef RINGBUFFER void ringbuffer_dump(FILE *stream); #endif @@ -529,7 +569,7 @@ void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int pac 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; @@ -557,8 +597,32 @@ if (count++ < max) { \ 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) + +// macros for handling help in cli commands +#define CLI_HELP_REQUESTED (argc > 0 && argv[argc-1][strlen(argv[argc-1])-1] == '?') +#define CLI_HELP_NO_ARGS (argc > 1 || argv[0][1]) ? CLI_OK : cli_arg_help(cli, 1, NULL) + +// CVS identifiers (for "show version file") +extern char const *cvs_id_arp; +extern char const *cvs_id_cli; +extern char const *cvs_id_cluster; +extern char const *cvs_id_constants; +extern char const *cvs_id_control; +extern char const *cvs_id_icmp; +extern char const *cvs_id_l2tpns; +extern char const *cvs_id_ll; +extern char const *cvs_id_md5; +extern char const *cvs_id_ppp; +extern char const *cvs_id_radius; +extern char const *cvs_id_tbf; +extern char const *cvs_id_util; + #endif /* __L2TPNS_H__ */