X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/4a2a55c66e0aa388ca8d5fe382eff16fa2726598..4df24fd868177859ddd778f1f45bc825f6264cfb:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 5614ae9..e83234d 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -1,5 +1,5 @@ // L2TPNS Global Stuff -// $Id: l2tpns.h,v 1.120 2006-10-23 02:51:53 bodea Exp $ +// $Id: l2tpns.h,v 1.121 2009-12-08 14:49:28 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@ -14,15 +14,13 @@ #include #include -#define VERSION "2.2.0" +#define VERSION "2.2.1" // Limits #define MAXTUNNEL 500 // could be up to 65535 #define MAXBUNDLE 300 // could be up to 65535 -#define MAXBUNDLESES 10 // Maximum number of member links in bundle +#define MAXBUNDLESES 12 // Maximum number of member links in bundle #define MAXADDRESS 20 // Maximum length for the Endpoint Discrminiator address -#define MAXFRAGNUM 1500 // Maximum number of Multilink fragment in a bundle -#define MAXFRAGLEN 1000 // Maximum length for Multilink fragment #define MAXSESSION 60000 // could be up to 65535 #define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session. @@ -40,8 +38,10 @@ #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 MAXHOSTNAME 256 // hostname #define MAXUSER 128 // username #define MAXPASS 128 // password +#define MAXCLASS 128 // radius class attribute size #define MAXPLUGINS 20 // maximum number of plugins to load #define MAXRADSERVER 10 // max radius servers #define MAXROUTE 10 // max static routes per session @@ -49,12 +49,18 @@ #define RINGBUFFER_SIZE 10000 // Number of ringbuffer entries to allocate #define MAX_LOG_LENGTH 512 // Maximum size of log message #define ECHO_TIMEOUT 10 // Time between last packet sent and LCP ECHO generation -#define IDLE_TIMEOUT 240 // Time between last packet seen and session shutdown +#define IDLE_ECHO_TIMEOUT 240 // Time between last packet seen and session shutdown #define BUSY_WAIT_TIME 3000 // 5 minutes in 1/10th seconds to wait for radius to cleanup on shutdown -#define MP_BEGIN 0x80 // This value is used when (b)egin bit is set in MP header -#define MP_END 0x40 // This value is used when (e)nd bit is set in MP header -#define MP_BOTH_BITS 0xC0 // This value is used when both bits (begin and end) are set in MP header +#define MP_BEGIN 0x80 // This value is used when (b)egin bit is set in MP header +#define MP_END 0x40 // This value is used when (e)nd bit is set in MP header +#define MP_BOTH_BITS 0xC0 // This value is used when both bits (begin and end) are set in MP header + +#define MINFRAGLEN 64 // Minumum fragment length +#define MAXFRAGLEN 1496 // Maximum length for Multilink fragment (The multilink may contain only one link) +#define MAXFRAGNUM 512 // Maximum number of Multilink fragment in a bundle (must be in the form of 2^X) + // it's not expected to have a space for more than 10 unassembled packets = 10 * MAXBUNDLESES +#define MAXFRAGNUM_MASK 511 // Must be equal to MAXFRAGNUM-1 // Constants #ifndef ETCDIR @@ -229,7 +235,7 @@ struct cli_tunnel_actions { typedef struct // route { in_addr_t ip; - in_addr_t mask; + int prefixlen; } routet; @@ -237,7 +243,10 @@ typedef struct controls // control message { struct controls *next; // next in queue uint16_t length; // length - uint8_t buf[MAXCONTROL]; + union { + uint8_t buf[MAXCONTROL]; + uint16_t buf16[MAXCONTROL/2]; + } __attribute__ ((__transparent_union__)); } controlt; @@ -248,8 +257,13 @@ typedef struct { } epdist; typedef struct { - uint16_t length; // Fragment length - uint8_t data[MAXFRAGLEN]; // Fragment data + sessionidt sid; // Fragment originating session + tunnelidt tid; // Fragment originating tunnel + uint8_t flags; // MP frame flags + uint32_t seq; // fragment seq num + uint32_t jitteravg; + uint16_t length; // Fragment length + uint8_t data[MAXFRAGLEN]; // Fragment data } fragmentt; typedef struct @@ -265,11 +279,10 @@ typedef struct uint8_t ipv6cp:4; // IPV6CP state uint8_t ccp:4; // CCP state } ppp; - char reserved_1[2]; // unused: padding + uint16_t mru; // maximum receive unit 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 - 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 @@ -279,61 +292,71 @@ typedef struct 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 + uint16_t snoop_port; // Interception destination port + in_addr_t snoop_ip; // Interception destination IP clockt opened; // when started clockt die; // being closed, when to finally free uint32_t session_timeout; // Maximum session time in seconds - uint32_t idle_timeout; // Maximum idle time in seconds + uint32_t idle_timeout; // Maximum idle time in seconds time_t last_packet; // Last packet from the user (used for idle timeouts) - time_t last_data; // Last data packet to/from the user (used for idle timeouts) + time_t last_data; // Last data packet to/from the user (used for idle timeouts) in_addr_t dns1, dns2; // DNS servers routet route[MAXROUTE]; // static routes uint16_t tbf_in; // filter bucket for throttling in from the user. uint16_t tbf_out; // filter bucket for throttling out to the user. int random_vector_length; uint8_t random_vector[MAXTEL]; - char user[MAXUSER]; // user (needed in seesion for radius stop messages) + char user[MAXUSER]; // user (needed in session 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 mrru; // Multilink Max-Receive-Reconstructed-Unit - uint8_t mssf; // Multilink Short Sequence Number Header Format - epdist epdis; // Multilink Endpoint Discriminator - bundleidt bundle; // Multilink Bundle Identifier - in_addr_t snoop_ip; // Interception destination IP - uint16_t snoop_port; // Interception destination port + clockt timeout; // Session timeout + uint32_t mrru; // Multilink Max-Receive-Reconstructed-Unit + epdist epdis; // Multilink Endpoint Discriminator + bundleidt bundle; // Multilink Bundle Identifier + uint8_t mssf; // Multilink Short Sequence Number Header Format uint8_t walled_garden; // is this session gardened? + uint8_t classlen; // class (needed for radius accounting messages) + char class[MAXCLASS]; uint8_t ipv6prefixlen; // IPv6 route prefix length struct in6_addr ipv6route; // Static IPv6 route - char reserved_3[11]; // Space to expand structure without changing HB_VERSION +#ifdef LAC + sessionidt forwardtosession; // LNS id_session to forward + char reserved[10]; // Space to expand structure without changing HB_VERSION +#else + char reserved[12]; // Space to expand structure without changing HB_VERSION +#endif } sessiont; typedef struct { - int state; // current state (bundlestate enum) - uint32_t seq_num_t; // Sequence Number (transmission) - uint32_t seq_num_m; // Last received frame sequence number (bearing B bit) - uint32_t offset; // Offset between sequence number and array index - uint8_t pending_frag; // Indicate that there is pending fragments to reassemble - uint8_t num_of_links; // Number of links joint to this bundle - uint32_t online_time; // The time this bundle is online - clockt last_check; // Last time the timeout is checked - uint32_t mrru; // Multilink Max-Receive-Reconstructed-Unit - uint8_t mssf; // Multilink Short Sequence Number Header Format - epdist epdis; // Multilink Endpoint Discriminator - char user[MAXUSER]; // Needed for matching member links - sessionidt current_ses; // Current session to use for sending (used in RR load-balancing) - sessionidt members[MAXBUNDLESES]; // Array for member links sessions + int state; // current state (bundlestate enum) + uint32_t seq_num_t; // Sequence Number (transmission) + uint32_t timeout; // Session-Timeout for bundle + uint32_t max_seq; // Max value of sequence number field + uint8_t num_of_links; // Number of links joint to this bundle + uint32_t online_time; // The time this bundle is online + clockt last_check; // Last time the timeout is checked + uint32_t mrru; // Multilink Max-Receive-Reconstructed-Unit + uint8_t mssf; // Multilink Short Sequence Number Header Format + epdist epdis; // Multilink Endpoint Discriminator + char user[MAXUSER]; // Needed for matching member links + sessionidt current_ses; // Current session to use for sending (used in RR load-balancing) + sessionidt members[MAXBUNDLESES]; // Array for member links sessions } bundlet; typedef struct { - fragmentt fragment[MAXFRAGNUM]; - uint8_t reassembled_frame[MAXETHER]; // The reassembled frame - uint16_t re_frame_len; // The reassembled frame length + fragmentt fragment[MAXFRAGNUM]; + uint8_t reassembled_frame[MAXETHER]; // The reassembled frame + uint16_t re_frame_len; // The reassembled frame length + uint16_t re_frame_begin_index, re_frame_end_index; // reassembled frame begin index, end index respectively + uint16_t start_index, end_index; // start and end sequence numbers available on the fragments array respectively + uint32_t M; // Minumum frame sequence number received over all bundle members + uint32_t start_seq; // Last received frame sequence number (bearing B bit) } fragmentationt; @@ -388,6 +411,14 @@ typedef struct // last LCP Echo time_t last_echo; + + // Last Multilink frame sequence number received + uint32_t last_seq; + + // jitter average of the session + uint32_t jitteravg; + // time in milliseconds of the last fragment. + uint64_t prev_time; } sessionlocalt; // session flags @@ -497,6 +528,7 @@ enum RADIUSSTOP, // sending stop accounting to RADIUS server RADIUSINTERIM, // sending interim accounting to RADIUS server RADIUSWAIT, // waiting timeout before available, in case delayed replies + RADIUSJUSTAUTH, // sending auth to RADIUS server, just authentication, no ip assigning }; struct Tstats @@ -601,6 +633,10 @@ struct Tstats #define SET_STAT(x, y) #endif +#ifndef IFNAMSIZ +# define IFNAMSIZ 16 +#endif + typedef struct { int debug; // debugging level @@ -616,7 +652,7 @@ typedef struct int reload_config; // flag to re-read config (set by cli) int multi_read_count; // amount of packets to read per fd in processing loop - char tundevice[10]; // tun device name + char tundevice[IFNAMSIZ]; // tun device name char log_filename[128]; char l2tp_secret[64]; // L2TP shared secret @@ -644,7 +680,7 @@ typedef struct int radius_authprefer; int allow_duplicate_users; // allow multiple logins with the same username - char guest_user[MAXUSER]; // allow multiple logins to guest account username + int kill_timedout_sessions; // kill authenticated sessions with "session_timeout == 0" in_addr_t default_dns1, default_dns2; @@ -691,11 +727,17 @@ typedef struct int cluster_hb_interval; // How often to send a heartbeat. int cluster_hb_timeout; // How many missed heartbeats trigger an election. uint64_t cluster_table_version; // # state changes processed by cluster - int cluster_master_min_adv; // Master advertises routes while the number of up to date - // slaves is less than this value. 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. + in_addr_t cli_bind_address; // bind address for CLI + char hostname[MAXHOSTNAME]; // hostname (overridden by -h on command line) + // Guest change + char guest_user[MAXUSER]; // Guest account username + #ifdef BGP #define BGP_NUM_PEERS 2 uint16_t as_number; @@ -704,7 +746,17 @@ typedef struct uint16_t as; int keepalive; int hold; + struct in_addr update_source; } neighbour[BGP_NUM_PEERS]; + in_addr_t nexthop_address; + struct in6_addr nexthop6_address; +#endif + + int echo_timeout; // Time between last packet sent and LCP ECHO generation + int idle_echo_timeout; // Time between last packet seen and + // Drop sessions who have not responded within IDLE_ECHO_TIMEOUT seconds +#ifdef LAC + int highest_rlnsid; #endif } configt; @@ -799,6 +851,13 @@ typedef struct #define TERM_PORT_REINIT 21 #define TERM_PORT_DISABLED 22 +// on slaves, alow BGP to withdraw cleanly before exiting +#define QUIT_DELAY 5 + +// quit actions (master) +#define QUIT_FAILOVER 1 // SIGTERM: exit when all control messages have been acked (for cluster failover) +#define QUIT_SHUTDOWN 2 // SIGQUIT: shutdown sessions/tunnels, reject new connections + // arp.c void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip); @@ -853,12 +912,20 @@ void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *t void sendipcp(sessionidt s, tunnelidt t); void sendipv6cp(sessionidt s, tunnelidt t); void processudp(uint8_t *buf, int len, struct sockaddr_in *addr); +void processipout(uint8_t *buf, int len); void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, uint16_t port); int find_filter(char const *name, size_t len); int ip_filter(uint8_t *buf, int len, uint8_t filter); 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); +#ifdef LAC +tunnelidt lac_new_tunnel(); +void lac_tunnelclear(tunnelidt t); +void lac_send_SCCRQ(tunnelidt t, uint8_t * auth, unsigned int auth_len); +void lac_send_ICRQ(tunnelidt t, sessionidt s); +void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char *msg); +#endif #undef LOG #undef LOG_HEX @@ -878,7 +945,8 @@ void become_master(void); // We're the master; kick off any required master init // cli.c -void init_cli(char *hostname); +void init_cli(); +void cli_init_complete(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, ...); @@ -916,6 +984,7 @@ struct event_data { FD_TYPE_DAE, FD_TYPE_RADIUS, FD_TYPE_BGP, + FD_TYPE_NETLINK, } type; int index; // for RADIUS, BGP }; @@ -929,19 +998,4 @@ extern uint16_t MSS; #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__ */