X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/81ca38323a409a68ef80c46283c555d20d553e2d..9e78f1af54f2c8b7abfbe6ffe2dfbd26e98672c2:/l2tpns.h diff --git a/l2tpns.h b/l2tpns.h index 285e643..092c683 100644 --- a/l2tpns.h +++ b/l2tpns.h @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -24,6 +25,9 @@ #define MAXSESSION 60000 // could be up to 65535 #define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session. +// Tunnel Id reserved for pppoe +#define TUNNEL_ID_PPPOE 1 + #define RADIUS_SHIFT 6 #define RADIUS_FDS (1 << RADIUS_SHIFT) #define RADIUS_MASK ((1 << RADIUS_SHIFT) - 1) @@ -49,7 +53,7 @@ #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 @@ -60,7 +64,7 @@ #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 +#define MAXFRAGNUM_MASK (MAXFRAGNUM - 1) // Must be equal to MAXFRAGNUM-1 // Constants #ifndef ETCDIR @@ -243,10 +247,7 @@ typedef struct controls // control message { struct controls *next; // next in queue uint16_t length; // length - union { - uint8_t buf[MAXCONTROL]; - uint16_t buf16[MAXCONTROL/2]; - } __attribute__ ((__transparent_union__)); + uint8_t buf[MAXCONTROL]; } controlt; @@ -321,7 +322,14 @@ typedef struct char class[MAXCLASS]; uint8_t ipv6prefixlen; // IPv6 route prefix length struct in6_addr ipv6route; // Static IPv6 route - char reserved[12]; // Space to expand structure without changing HB_VERSION +#ifdef LAC + sessionidt forwardtosession; // LNS id_session to forward + uint8_t src_hwaddr[ETH_ALEN]; // MAC addr source (for pppoe sessions 6 bytes) + char reserved[4]; // Space to expand structure without changing HB_VERSION +#else + uint8_t src_hwaddr[ETH_ALEN]; // MAC addr source (for pppoe sessions 6 bytes) + char reserved[6]; // Space to expand structure without changing HB_VERSION +#endif } sessiont; @@ -345,9 +353,9 @@ 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 @@ -421,7 +429,7 @@ typedef struct #define SESSION_ACFC (1 << 1) // use Address-and-Control-Field-Compression #define SESSION_STARTED (1 << 2) // RADIUS Start record sent -// 168 bytes per tunnel +// 328 bytes per tunnel typedef struct { tunnelidt far; // far end tunnel ID @@ -441,6 +449,12 @@ typedef struct uint16_t controlc; // outstaind messages in queue controlt *controls; // oldest message controlt *controle; // newest message +#ifdef LAC + uint16_t isremotelns; // != 0 if the tunnel is to remote LNS (== index on the conf remote lns) + char reserved[14]; // Space to expand structure without changing HB_VERSION +#else + char reserved[16]; // Space to expand structure without changing HB_VERSION +#endif } tunnelt; @@ -647,7 +661,7 @@ 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[IFNAMSIZ]; // tun device name + char tundevicename[IFNAMSIZ]; // tun device name char log_filename[128]; char l2tp_secret[64]; // L2TP shared secret @@ -746,6 +760,24 @@ typedef struct 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 + in_addr_t iftun_address; +#ifdef LAC + int disable_lac_func; + int auth_tunnel_change_addr_src; + int highest_rlnsid; + uint16_t bind_portremotelns; + in_addr_t bind_address_remotelns; +#endif + char pppoe_if_to_bind[IFNAMSIZ]; // Name pppoe interface to bind + char pppoe_service_name[64]; // pppoe service name + char pppoe_ac_name[64]; + uint8_t pppoe_hwaddr[ETH_ALEN]; // MAC addr of interface pppoe to bind + int disable_sending_hello; // Disable l2tp sending HELLO message for Apple compatibility. + int disable_no_spoof; // Disable no spoof (permit load balancing client --> internet) } configt; enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 }; @@ -839,6 +871,13 @@ 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); @@ -847,6 +886,7 @@ void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip); void processpap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void processchap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l); void lcp_open(sessionidt s, tunnelidt t); +void lcp_restart(sessionidt s); 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); @@ -857,6 +897,7 @@ 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 prio, bundleidt bid, uint8_t mp_bits); +uint8_t *opt_makeppp(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); @@ -872,7 +913,9 @@ void radiusretry(uint16_t r); uint16_t radiusnew(sessionidt s); void radiusclear(uint16_t r, sessionidt s); void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struct in_addr *local); - +#ifdef LAC +int rad_tunnel_pwdecode(uint8_t *pl2tpsecret, size_t *pl2tpsecretlen, const char *radiussecret, const uint8_t * auth); +#endif // l2tpns.c clockt backoff(uint8_t try); @@ -893,12 +936,20 @@ 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 @@ -949,15 +1000,20 @@ extern int epollfd; struct event_data { enum { - FD_TYPE_CLI, - FD_TYPE_CLUSTER, - FD_TYPE_TUN, - FD_TYPE_UDP, - FD_TYPE_CONTROL, - FD_TYPE_DAE, + FD_TYPE_CLI, + FD_TYPE_CLUSTER, + FD_TYPE_TUN, + FD_TYPE_UDP, + FD_TYPE_CONTROL, + FD_TYPE_DAE, FD_TYPE_RADIUS, FD_TYPE_BGP, FD_TYPE_NETLINK, +#ifdef LAC + FD_TYPE_UDPLAC, +#endif + FD_TYPE_PPPOEDISC, + FD_TYPE_PPPOESESS } type; int index; // for RADIUS, BGP };