X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/7462628249a5e5735ed0f34b489e9a7f550a2152..d2848cebc450b4d1e66a4b7bf290167f2870b618:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 7154554..5b68df7 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -1,5 +1,5 @@ // L2TPNS Global Stuff -// $Id: l2tpns.h,v 1.113 2006-04-18 06:00:08 bodea Exp $ +// $Id: l2tpns.h,v 1.121 2009-12-08 14:49:28 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@ -14,10 +14,13 @@ #include #include -#define VERSION "2.1.18" +#define VERSION "2.2.1" // Limits #define MAXTUNNEL 500 // could be up to 65535 +#define MAXBUNDLE 300 // could be up to 65535 +#define MAXBUNDLESES 12 // Maximum number of member links in bundle +#define MAXADDRESS 20 // Maximum length for the Endpoint Discrminiator address #define MAXSESSION 60000 // could be up to 65535 #define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session. @@ -37,16 +40,27 @@ #define MAXTEL 96 // telephone number #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 #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 -#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 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 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 MINFRAGLEN 64 // Minumum fragment length +#define MAXFRAGLEN 750 // Maximum length for Multilink fragment (MTU / 2 sessions) +#define MAXFRAGNUM 128 // 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 127 // Must be equal to MAXFRAGNUM-1 + // Constants #ifndef ETCDIR #define ETCDIR "/etc/l2tpns" @@ -186,6 +200,7 @@ enum { // Types typedef uint16_t sessionidt; +typedef uint16_t bundleidt; typedef uint16_t tunnelidt; typedef uint32_t clockt; typedef uint8_t hasht[16]; @@ -231,6 +246,20 @@ typedef struct controls // control message } controlt; +typedef struct { + uint8_t length; // Endpoint Discriminator length + uint8_t addr_class; // Endpoint Discriminator class + uint8_t address[MAXADDRESS]; // Endpoint Discriminator address +} epdist; + +typedef struct { + sessionidt sid; // Fragment originating session + uint8_t flags; // MP frame flags + uint32_t seq; // fragment seq num + uint16_t length; // Fragment length + uint8_t data[MAXFRAGLEN]; // Fragment data +} fragmentt; + typedef struct { sessionidt next; // next session in linked list @@ -244,11 +273,10 @@ 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 @@ -258,30 +286,69 @@ 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 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) 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; - 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 + char reserved[12]; // Space to expand structure without changing HB_VERSION } sessiont; +typedef struct +{ + 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 + 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; + #define AUTHPAP 1 // allow PAP #define AUTHCHAP 2 // allow CHAP @@ -311,6 +378,15 @@ typedef struct // our MRU uint16_t ppp_mru; + // our MRRU + uint16_t mp_mrru; + + // our mssf + uint16_t mp_mssf; + + // our Endpoint Discriminator + in_addr_t mp_epdis; + // DoS prevention clockt last_packet_out; uint32_t packets_out; @@ -324,6 +400,9 @@ typedef struct // last LCP Echo time_t last_echo; + + // Last Multilink frame sequence number received + uint32_t last_seq; } sessionlocalt; // session flags @@ -407,6 +486,23 @@ enum TUNNELUNDEF, // Undefined }; +enum +{ + BUNDLEFREE, // Not in use + BUNDLEOPEN, // Active bundle + BUNDLEUNDEF, // Undefined +}; + +enum +{ + NULLCLASS = 0, //End Point Discriminator classes + LOCALADDR, + IPADDR, + IEEEMACADDR, + PPPMAGIC, + PSNDN, +}; + enum { RADIUSNULL, // Not in use @@ -416,6 +512,7 @@ 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 @@ -554,13 +651,16 @@ typedef struct uint16_t radiusport[MAXRADSERVER]; // radius base ports uint8_t numradiusservers; // radius server count - uint16_t radius_dae_port; // local port for radius dae + uint16_t radius_dae_port; // port for radius DAE + uint16_t radius_bind_min; // port range for udp sockets used to send/recv radius packets + uint16_t radius_bind_max; 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 + int kill_timedout_sessions; // kill authenticated sessions with "session_timeout == 0" in_addr_t default_dns1, default_dns2; @@ -572,7 +672,6 @@ typedef struct in_addr_t peer_address; int send_garp; // Set to true to garp for vip address on startup - int target_uid; int dump_speed; char plugins[64][MAXPLUGINS]; char old_plugins[64][MAXPLUGINS]; @@ -583,6 +682,7 @@ typedef struct 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 + char epdis_addr[20]; // MP Endpoint Discriminator address in_addr_t cluster_address; // Multicast address of cluster. // Send to this address to have everyone hear. @@ -594,8 +694,10 @@ typedef struct 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). int cluster_undefined_sessions; // How many sessions we're yet to receive from the master. + int cluster_undefined_bundles; // How many bundles we're yet to receive from the master. int cluster_undefined_tunnels; // How many tunnels we're yet to receive from the master. int cluster_highest_sessionid; + int cluster_highest_bundleid; 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 @@ -611,6 +713,8 @@ typedef struct int cluster_master_min_adv; // Master advertises routes while the number of up to date // slaves is less than this value. + // Guest change + char guest_user[MAXUSER]; // Guest account username #ifdef BGP #define BGP_NUM_PEERS 2 @@ -727,14 +831,17 @@ void processlcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void processipv6cp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void processipin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processmpin(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); +void processmpframe(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint8_t extra); void processipv6in(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void processccp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void sendchap(sessionidt s, tunnelidt t); -uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype); +uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype, uint8_t prio, bundleidt bid, uint8_t mp_bits); 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); +int join_bundle(sessionidt s); // radius.c @@ -802,6 +909,7 @@ void host_unreachable(in_addr_t destination, uint16_t id, in_addr_t source, uint extern tunnelt *tunnel; +extern bundlet *bundle; extern sessiont *session; extern sessionlocalt *sess_local; extern ippoolt *ip_address_pool; @@ -841,19 +949,4 @@ 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__ */