X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/29c173cadc5969d03fabac250fa9868c2481f10c..c6116cc4e352755291a24f90e6c9fbfb45c3d226:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 3783771..523cf4d 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -1,5 +1,5 @@ // L2TPNS Global Stuff -// $Id: l2tpns.h,v 1.58 2005/03/10 03:31:25 bodea Exp $ +// $Id: l2tpns.h,v 1.76 2005/06/04 15:42:36 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@ -22,9 +22,10 @@ #define MAXSESSION 60000 // could be up to 65535 #define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session. -#define RADIUS_SHIFT 5 -#define RADIUS_MASK ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT))) -#define MAXRADIUS ((unsigned long)(1L << RADIUS_SHIFT) * 255) +#define RADIUS_SHIFT 6 +#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. @@ -43,6 +44,7 @@ #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 +#define DEFAULT_MRU 1452 // maximum packet size to avoid fragmentation when LNS ethernet MTU is 1500 // Constants #ifndef ETCDIR @@ -53,10 +55,6 @@ #define LIBDIR "/usr/lib/l2tpns" #endif -#ifndef STATEDIR -#define STATEDIR "/var/lib/l2tpns" -#endif - #ifndef PLUGINDIR #define PLUGINDIR LIBDIR // Plugins #endif @@ -69,13 +67,8 @@ #define FLASHDIR ETCDIR #endif -#ifndef DATADIR -#define DATADIR STATEDIR -#endif - #define TUNDEVICE "/dev/net/tun" #define RANDOMDEVICE "/dev/urandom" // default, not as secure as /dev/random but non-blocking -#define STATEFILE DATADIR "/state.dump" // State dump file #define CONFIGFILE FLASHDIR "/startup-config" // Configuration file #define CLIUSERS FLASHDIR "/users" // CLI Users file #define IPPOOLFILE FLASHDIR "/ip_pool" // Address pool configuration @@ -152,9 +145,6 @@ struct cli_tunnel_actions { #define CLI_TUN_KILL 0x01 -// dump header: update number if internal format changes -#define DUMP_MAGIC "L2TPNS#" VERSION "#" - // structures typedef struct // route { @@ -176,48 +166,43 @@ 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; // Various session flags. in_addr_t ip; // IP of session set by RADIUS response (host byte order). int ip_pool_index; // index to IP pool - unsigned long unique_id; // unique session id + uint32_t unique_id; // unique session id uint16_t nr; // next receive uint16_t ns; // next send uint32_t magic; // ppp magic number - uint32_t cin, cout; // byte counts uint32_t pin, pout; // packet counts - uint32_t total_cin; // This counter is never reset while a session is open - uint32_t total_cout; // This counter is never reset while a session is open - uint32_t id; // session id + uint32_t cin, cout; // byte counts + uint32_t cin_wrap, cout_wrap; // byte counter wrap count (RADIUS accounting giagawords) + uint32_t cin_delta, cout_delta; // byte count changes (for dump_session()) uint16_t throttle_in; // upstream throttle rate (kbps) uint16_t throttle_out; // downstream throttle rate + uint8_t filter_in; // input filter index (to ip_filters[N-1]; 0 if none) + uint8_t filter_out; // output filter index + uint16_t mru; // maximum receive unit 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) in_addr_t dns1, dns2; // DNS servers routet route[MAXROUTE]; // static routes - uint16_t radius; // which radius session is being used (0 for not waiting on authentication) - uint16_t mru; // maximum receive unit uint16_t tbf_in; // filter bucket for throttling in from the user. uint16_t tbf_out; // filter bucket for throttling out to the user. - uint8_t l2tp_flags; // various bit flags from the ICCN on the l2tp tunnel. - uint8_t reserved_old_snoop; // No longer used - remove at some time - uint8_t walled_garden; // is this session gardened? - uint8_t flags1; // additional flags (currently unused); - char random_vector[MAXTEL]; int random_vector_length; + char random_vector[MAXTEL]; char user[MAXUSER]; // user (needed in seesion for radius stop messages) char called[MAXTEL]; // called number char calling[MAXTEL]; // calling number uint32_t tx_connect_speed; uint32_t rx_connect_speed; - uint32_t flags; // Various session flags. in_addr_t snoop_ip; // Interception destination IP uint16_t snoop_port; // Interception destination port - uint16_t sid; // near end session id. - uint8_t filter_in; // input filter index (to ip_filters[N-1]; 0 if none) - uint8_t filter_out; // output filter index - struct in6_addr ipv6route; // Static IPv6 route + uint8_t walled_garden; // is this session gardened? uint8_t ipv6prefixlen; // IPv6 route prefix length - char reserved[1]; // Space to expand structure without changing HB_VERSION + struct in6_addr ipv6route; // Static IPv6 route + char reserved[16]; // Space to expand structure without changing HB_VERSION } sessiont; @@ -233,6 +218,10 @@ sessiont; typedef struct { + // packet counters + uint32_t pin; + uint32_t pout; + // byte counters uint32_t cin; uint32_t cout; @@ -241,6 +230,12 @@ typedef struct clockt last_packet_out; uint32_t packets_out; uint32_t packets_dropped; + + // RADIUS session in use + uint16_t radius; + + // interim RADIUS + time_t last_interim; } sessionlocalt; #define SESSIONPFC 1 // PFC negotiated flags @@ -329,8 +324,8 @@ enum RADIUSIPCP, // sending IPCP to end user RADIUSSTART, // sending start accounting to RADIUS server RADIUSSTOP, // sending stop accounting to RADIUS server + RADIUSINTERIM, // sending interim accounting to RADIUS server RADIUSWAIT, // waiting timeout before available, in case delayed replies - RADIUSDEAD, // errored while talking to radius server. }; struct Tstats @@ -447,7 +442,6 @@ typedef struct 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 tundevice[10]; // tun device name @@ -458,15 +452,17 @@ typedef struct char radiussecret[64]; int radius_accounting; + int radius_interim; in_addr_t radiusserver[MAXRADSERVER]; // radius servers uint16_t radiusport[MAXRADSERVER]; // radius base ports uint8_t numradiusservers; // radius server count - short num_radfds; // Number of radius filehandles allocated char radius_authtypes_s[32]; // list of valid authentication types (chap, pap) in order of preference int radius_authtypes; int radius_authprefer; + int allow_duplicate_users; // allow multiple logins with the same username + in_addr_t default_dns1, default_dns2; unsigned long rl_rate; // default throttle rate @@ -483,7 +479,8 @@ typedef struct char old_plugins[64][MAXPLUGINS]; int next_tbf; // Next HTB id available to use - int scheduler_fifo; // If the system has multiple CPUs, use FIFO scheduling policy for this process. + 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 int max_packets; // DoS prevention: per session limit of packets/0.1s @@ -502,6 +499,7 @@ typedef struct int cluster_highest_sessionid; int cluster_highest_tunnelid; clockt cluster_last_hb; // Last time we saw a heartbeat from the master. + int cluster_last_hb_ver; // Heartbeat version last seen from master int cluster_num_changes; // Number of changes queued. int cluster_hb_interval; // How often to send a heartbeat. @@ -510,6 +508,10 @@ typedef struct struct in6_addr ipv6_prefix; // Our IPv6 network pool. + + int cluster_master_min_adv; // Master advertises routes while the number of up to date + // slaves is less than this value. + #ifdef BGP #define BGP_NUM_PEERS 2 uint16_t as_number; @@ -598,7 +600,7 @@ void processipv6in(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); void processccp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l); void sendchap(tunnelidt t, sessionidt s); uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, tunnelidt t, sessionidt s, uint16_t mtype); -void initlcp(tunnelidt t, sessionidt s); +void sendlcp(tunnelidt t, sessionidt s, int authtype); void send_ipin(sessionidt s, uint8_t *buf, int len); @@ -618,9 +620,10 @@ void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add); sessionidt sessionbyip(in_addr_t ip); sessionidt sessionbyipv6(struct in6_addr ip); 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); +void sessionshutdown(sessionidt s, char *reason, int result, int error); void send_garp(in_addr_t ip); void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t); void sendipcp(tunnelidt t, sessionidt s); @@ -683,12 +686,26 @@ if (count++ < max) { \ extern configt *config; extern time_t basetime; // Time when this process started. extern time_t time_now; // Seconds since EPOCH. +extern char main_quit; extern uint32_t last_id; extern struct Tstats *_statistics; extern in_addr_t my_address; extern int tun_write(uint8_t *data, int size); extern int clifd; - +extern int epollfd; + +struct event_data { + enum { + FD_TYPE_CONTROL, + FD_TYPE_CLI, + FD_TYPE_UDP, + FD_TYPE_TUN, + FD_TYPE_CLUSTER, + FD_TYPE_RADIUS, + FD_TYPE_BGP, + } type; + int index; // for RADIUS, BGP +}; #define TIME (config->current_time)