Removal MTU size limitation

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index e83234d..9520fd7 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -9,12 +9,13 @@
 #include <signal.h>
 #include <stdlib.h>
 #include <netinet/in.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <netinet/in.h>

+#include <net/ethernet.h>

 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <sys/types.h>
 #include <libcli.h>
 
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <sys/types.h>
 #include <libcli.h>
 

-#define VERSION        "2.2.1"
+#define VERSION        "2.2.1-2fdn3.13"

 
 // Limits
 #define MAXTUNNEL      500             // could be up to 65535
 
 // Limits
 #define MAXTUNNEL      500             // could be up to 65535


@@ -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.
 
 #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)
 #define RADIUS_SHIFT   6
 #define RADIUS_FDS     (1 << RADIUS_SHIFT)
 #define RADIUS_MASK    ((1 << RADIUS_SHIFT) - 1)


@@ -45,6 +49,7 @@
 #define MAXPLUGINS     20              // maximum number of plugins to load
 #define MAXRADSERVER   10              // max radius servers
 #define MAXROUTE       10              // max static routes per session
 #define MAXPLUGINS     20              // maximum number of plugins to load
 #define MAXRADSERVER   10              // max radius servers
 #define MAXROUTE       10              // max static routes per session

+#define MAXROUTE6      5               // max static Ipv6 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 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


@@ -60,7 +65,16 @@
 #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 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
+
+// Multi bind address constants
+#define MAX_UDPFD 4
+#define MAX_BINDADDR MAX_UDPFD
+// + 1 for the LAC Hostname
+#define MAX_NBHOSTNAME (MAX_UDPFD + 1)
+// 4 + 1 for the udplac
+#define INIT_TABUDPFD {-1, -1, -1, -1, -1}
+#define INIT_TABUDPVAR {0, 0, 0, 0, 0}

 
 // Constants
 #ifndef ETCDIR
 
 // Constants
 #ifndef ETCDIR


@@ -239,14 +253,19 @@ typedef struct                    // route
 }
 routet;
 
 }
 routet;
 

+// structures
+typedef struct                 // route
+{
+       struct in6_addr ipv6route;      // Static IPv6 route
+       uint8_t ipv6prefixlen;          // IPv6 route prefix length
+}
+routet6;
+

 typedef struct controls                // control message
 {
        struct controls *next;  // next in queue
        uint16_t length;        // length
 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;
 
 }
 controlt;
 


@@ -319,14 +338,14 @@ typedef struct
        uint8_t walled_garden;          // is this session gardened?
        uint8_t classlen;               // class (needed for radius accounting messages)
        char class[MAXCLASS];
        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
-#ifdef LAC

        sessionidt forwardtosession;    // LNS id_session to forward
        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
+       uint8_t src_hwaddr[ETH_ALEN];   // MAC addr source (for pppoe sessions 6 bytes)
+       uint32_t dhcpv6_prefix_iaid;    // prefix iaid requested by client
+       uint32_t dhcpv6_iana_iaid;              // iaid of iana requested by client
+       struct in6_addr ipv6address;    // Framed Ipv6 address
+       struct dhcp6_opt_clientid dhcpv6_client_id; // Size max (headers + DUID)
+       routet6 route6[MAXROUTE6];              // static IPv6 routes
+       char reserved[4];               // Space to expand structure without changing HB_VERSION

 }
 sessiont;
 
 }
 sessiont;
 


@@ -350,9 +369,9 @@ bundlet;
 
 typedef struct
 {
 
 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
        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


@@ -426,7 +445,7 @@ typedef struct
 #define SESSION_ACFC   (1 << 1)        // use Address-and-Control-Field-Compression
 #define SESSION_STARTED        (1 << 2)        // RADIUS Start record sent
 
 #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
 typedef struct
 {
        tunnelidt far;          // far end tunnel ID


@@ -446,6 +465,9 @@ typedef struct
        uint16_t controlc;      // outstaind messages in queue
        controlt *controls;     // oldest message
        controlt *controle;     // newest message
        uint16_t controlc;      // outstaind messages in queue
        controlt *controls;     // oldest message
        controlt *controle;     // newest message

+       uint16_t isremotelns;   // != 0 if the tunnel is to remote LNS (== index on the conf remote lns)
+       uint16_t indexudp;      // Index UDP file handle (in udpfd[])
+       char reserved[12];              // Space to expand structure without changing HB_VERSION

 }
 tunnelt;
 
 }
 tunnelt;
 


@@ -584,6 +606,7 @@ struct Tstats
     uint32_t   call_processudp;
     uint32_t   call_sessionbyip;
     uint32_t   call_sessionbyipv6;
     uint32_t   call_processudp;
     uint32_t   call_sessionbyip;
     uint32_t   call_sessionbyipv6;

+    uint32_t   call_sessionbyipv6new;

     uint32_t   call_sessionbyuser;
     uint32_t   call_sendarp;
     uint32_t   call_sendipcp;
     uint32_t   call_sessionbyuser;
     uint32_t   call_sendarp;
     uint32_t   call_sendipcp;


@@ -610,6 +633,7 @@ struct Tstats
     uint32_t   call_radiussend;
     uint32_t   call_radiusretry;
     uint32_t    call_random_data;
     uint32_t   call_radiussend;
     uint32_t   call_radiusretry;
     uint32_t    call_random_data;

+    uint32_t    call_dhcpv6_process;

 #endif
 };
 
 #endif
 };
 


@@ -652,7 +676,7 @@ 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
 
        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
        char            log_filename[128];
 
        char            l2tp_secret[64];                // L2TP shared secret


@@ -663,6 +687,7 @@ typedef struct
        int             ppp_restart_time;               // timeout for PPP restart
        int             ppp_max_configure;              // max lcp configure requests to send
        int             ppp_max_failure;                // max lcp configure naks to send
        int             ppp_restart_time;               // timeout for PPP restart
        int             ppp_max_configure;              // max lcp configure requests to send
        int             ppp_max_failure;                // max lcp configure naks to send

+       int             ppp_keepalive;                  // send echoes regardless

 
        char            radiussecret[64];
        int             radius_accounting;
 
        char            radiussecret[64];
        int             radius_accounting;


@@ -688,6 +713,7 @@ typedef struct
        int             num_tbfs;                       // number of throttle buckets
 
        char            accounting_dir[128];
        int             num_tbfs;                       // number of throttle buckets
 
        char            accounting_dir[128];

+       int             account_all_origin; // Accouting all origin (LAC data + Remote LNS Data + PPPOE data)

        in_addr_t       bind_address;
        in_addr_t       peer_address;
        int             send_garp;                      // Set to true to garp for vip address on startup
        in_addr_t       bind_address;
        in_addr_t       peer_address;
        int             send_garp;                      // Set to true to garp for vip address on startup


@@ -755,9 +781,36 @@ typedef struct
        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
        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
+       in_addr_t iftun_address;
+       int disable_lac_func;
+       int auth_tunnel_change_addr_src;

        int highest_rlnsid;
        int highest_rlnsid;

-#endif
+       uint16_t bind_portremotelns;
+       in_addr_t bind_address_remotelns;
+       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 pppoe_only_equal_svc_name; // Accept only PADI with service-name equal to server
+       int disable_sending_hello; // Disable l2tp sending HELLO message for Apple compatibility.
+       int disable_no_spoof; // Disable no spoof (permit load balancing client --> internet)
+       int nbudpfd; // number UDP file handle
+       int nbmultiaddress; // number multi address to bind
+       int indexlacudpfd;      // Index UDP LAC file handle (in udpfd[])
+       int nbmultihostname;    // number hostname, normally the same number as the nbudpfd
+       int no_throttle_local_IP;       // no throttle traffic from session to session
+       in_addr_t bind_n_address[MAX_BINDADDR];
+       in_addr_t iftun_n_address[MAX_BINDADDR];
+       char bind_multi_address[256];
+       char multi_hostname[512];
+       char multi_n_hostname[MAX_NBHOSTNAME][MAXHOSTNAME];     // list hostname
+       struct in6_addr default_ipv6_dns1;
+       struct in6_addr default_ipv6_dns2;
+       uint32_t dhcp6_preferred_lifetime;              // preferred lifetime (see rfc3315)
+       uint32_t dhcp6_valid_lifetime;          // valid lifetime (see rfc3315)
+       uint32_t dhcp6_server_duid;             // DUID of dhcpv6 server (see rfc3315)
+       uint32_t dns6_lifetime;         // RDNSS lifetime default 1200 (see rfc6106, rfc4861) (MaxRtrAdvInterval <= Lifetime <= 2*MaxRtrAdvInterval)
+       char default_ipv6_domain_list[255];

 } configt;
 
 enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };
 } configt;
 
 enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };


@@ -866,6 +919,7 @@ 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 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);
 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);


@@ -876,6 +930,7 @@ 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);
 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);
 void sendlcp(sessionidt s, tunnelidt t);
 void send_ipin(sessionidt s, uint8_t *buf, int len);
 void sendccp(sessionidt s, tunnelidt t);


@@ -891,7 +946,7 @@ 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);
 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);

-
+int rad_tunnel_pwdecode(uint8_t *pl2tpsecret, size_t *pl2tpsecretlen, const char *radiussecret, const uint8_t * auth);

 
 // l2tpns.c
 clockt backoff(uint8_t try);
 
 // l2tpns.c
 clockt backoff(uint8_t try);


@@ -899,6 +954,7 @@ void send_ipv6_ra(sessionidt s, tunnelidt t, struct in6_addr *ip);
 void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add);
 sessionidt sessionbyip(in_addr_t ip);
 sessionidt sessionbyipv6(struct in6_addr ip);
 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 sessionbyipv6new(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);
 sessionidt sessionbyuser(char *username);
 void increment_counter(uint32_t *counter, uint32_t *wrap, uint32_t delta);
 void random_data(uint8_t *buf, int len);


@@ -911,21 +967,19 @@ int tun_write(uint8_t *data, int size);
 void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *tcp);
 void sendipcp(sessionidt s, tunnelidt t);
 void sendipv6cp(sessionidt s, tunnelidt t);
 void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *tcp);
 void sendipcp(sessionidt s, tunnelidt t);
 void sendipv6cp(sessionidt s, tunnelidt t);

-void processudp(uint8_t *buf, int len, struct sockaddr_in *addr);
+void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexudpfd);

 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);
 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
+int cmd_show_ipcache(struct cli_def *cli, const char *command, char **argv, int argc);
+int cmd_show_hist_idle(struct cli_def *cli, const char *command, char **argv, int argc);
+int cmd_show_hist_open(struct cli_def *cli, const char *command, char **argv, int argc);

 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);
 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
 
 #undef LOG
 #undef LOG_HEX


@@ -976,17 +1030,19 @@ extern int epollfd;
 
 struct event_data {
        enum {
 
 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,
                FD_TYPE_RADIUS,
                FD_TYPE_BGP,
                FD_TYPE_NETLINK,

+               FD_TYPE_PPPOEDISC,
+               FD_TYPE_PPPOESESS

        } type;
        } type;

-       int index; // for RADIUS, BGP
+       int index; // for RADIUS, BGP, UDP

 };
 
 #define TIME (config->current_time)
 };
 
 #define TIME (config->current_time)