Revert "Update Changelog"

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index 1e35fbd..1ce46a3 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -1,26 +1,35 @@
 // L2TPNS Global Stuff
 // L2TPNS Global Stuff

-// $Id: l2tpns.h,v 1.104 2005/12/06 23:53:14 bodea Exp $
+// $Id: l2tpns.h,v 1.121 2009-12-08 14:49:28 bodea Exp $

 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
 
 #include <netinet/in.h>
 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
 
 #include <netinet/in.h>

-#include <execinfo.h>

 #include <stdio.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <netinet/in.h>
 #include <stdio.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        "2.1.13"
+#define VERSION        "2.2.1"

 
 // Limits
 #define MAXTUNNEL      500             // could be up to 65535
 
 // 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.
 #define MAXSESSION     60000           // could be up to 65535
 #define MAXTBFS                6000            // Maximum token bucket filters. Might need up to 2 * session.

+#define MAXSESSINGRP   12              // Maximum number of member links in grouped session
+#define MAXGROUPE              300     // could be up to 65535, Maximum number of grouped session
+#define MAXROUTEINGRP  15              // max static routes per group
+
+// Tunnel Id reserved for pppoe
+#define TUNNEL_ID_PPPOE        1

 
 #define RADIUS_SHIFT   6
 #define RADIUS_FDS     (1 << RADIUS_SHIFT)
 
 #define RADIUS_SHIFT   6
 #define RADIUS_FDS     (1 << RADIUS_SHIFT)


@@ -32,22 +41,43 @@
 
 #define MAXCONTROL     1000            // max length control message we ever send...
 #define MINMTU         576             // minimum recommended MTU (rfc1063)
 
 #define MAXCONTROL     1000            // max length control message we ever send...
 #define MINMTU         576             // minimum recommended MTU (rfc1063)

-#define PPPMTU         1500            // default PPP MTU

 #define MAXMTU         2600            // arbitrary maximum MTU
 #define MAXMTU         2600            // arbitrary maximum MTU

+#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 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 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 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_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 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     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 (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
 #define ETCDIR         "/etc/l2tpns"
 // Constants
 #ifndef ETCDIR
 #define ETCDIR         "/etc/l2tpns"


@@ -148,7 +178,16 @@ enum {
 
 // reset state machine counters
 #define initialise_restart_count(_s, _fsm)                     \
 
 // reset state machine counters
 #define initialise_restart_count(_s, _fsm)                     \

-       sess_local[_s]._fsm.conf_sent = sess_local[_s]._fsm.nak_sent = 0
+       sess_local[_s]._fsm.conf_sent =                         \
+       sess_local[_s]._fsm.nak_sent = 0
+
+// no more attempts
+#define zero_restart_count(_s, _fsm) ({                                \
+       sess_local[_s]._fsm.conf_sent =                         \
+               config->ppp_max_configure;                      \
+       sess_local[_s]._fsm.restart =                           \
+               time_now + config->ppp_restart_time;            \
+})

 
 // increment ConfReq counter and reset timer
 #define restart_timer(_s, _fsm) ({                             \
 
 // increment ConfReq counter and reset timer
 #define restart_timer(_s, _fsm) ({                             \


@@ -178,7 +217,9 @@ enum {
 
 // Types
 typedef uint16_t sessionidt;
 
 // Types
 typedef uint16_t sessionidt;

+typedef uint16_t bundleidt;

 typedef uint16_t tunnelidt;
 typedef uint16_t tunnelidt;

+typedef uint16_t groupidt;

 typedef uint32_t clockt;
 typedef uint8_t hasht[16];
 
 typedef uint32_t clockt;
 typedef uint8_t hasht[16];
 


@@ -211,7 +252,7 @@ struct cli_tunnel_actions {
 typedef struct                 // route
 {
        in_addr_t ip;
 typedef struct                 // route
 {
        in_addr_t ip;

-       in_addr_t mask;
+       int prefixlen;

 }
 routet;
 
 }
 routet;
 


@@ -223,6 +264,22 @@ typedef struct controls            // control message
 }
 controlt;
 
 }
 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
+       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
 {
        sessionidt next;                // next session in linked list
 typedef struct
 {
        sessionidt next;                // next session in linked list


@@ -236,11 +293,10 @@ typedef struct
                uint8_t ipv6cp:4;       //   IPV6CP state
                uint8_t ccp:4;          //   CCP    state
        } ppp;
                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
        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
        uint32_t magic;                 // ppp magic number
        uint32_t pin, pout;             // packet counts
        uint32_t cin, cout;             // byte counts


@@ -250,30 +306,100 @@ 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 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
        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_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];
        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;
        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 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
        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
+       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

 }
 sessiont;
 
 }
 sessiont;
 

+typedef struct
+{
+       uint32_t tx_rate;
+       uint32_t prev_coutgrp;
+       sessionidt sid;
+       uint8_t weight;
+}
+groupsesslistt;
+
+typedef struct
+{
+       int state;                              // current state (groupestate enum)
+       uint32_t time_changed;
+       groupidt prev;
+       sessionidt smax;
+       sessionidt smin;
+       groupsesslistt sesslist[MAXSESSINGRP];
+       routet route[MAXROUTEINGRP];            // static routes
+       uint8_t nbroutesgrp;
+       uint8_t nbsession;
+}
+groupsesst;
+
+union iphash
+{
+       sessionidt sess;
+       union iphash *idx;
+};                     // Mapping from IP address to session structures.
+
+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
 
 #define AUTHPAP                1       // allow PAP
 #define AUTHCHAP       2       // allow CHAP
 


@@ -303,6 +429,15 @@ typedef struct
        // our MRU
        uint16_t ppp_mru;
 
        // 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;
        // DoS prevention
        clockt last_packet_out;
        uint32_t packets_out;


@@ -316,6 +451,14 @@ typedef struct
 
        // last LCP Echo
        time_t last_echo;
 
        // 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
 } sessionlocalt;
 
 // session flags


@@ -323,7 +466,7 @@ 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


@@ -343,10 +486,13 @@ 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;
 

-// 160 bytes per radius session
+// 164 bytes per radius session

 typedef struct                 // outstanding RADIUS requests
 {
        sessionidt session;     // which session this applies to
 typedef struct                 // outstanding RADIUS requests
 {
        sessionidt session;     // which session this applies to


@@ -357,6 +503,8 @@ typedef struct                      // outstanding RADIUS requests
        uint8_t try;            // which try we are on
        uint8_t state;          // state of radius requests
        uint8_t chap;           // set if CHAP used (is CHAP identifier)
        uint8_t try;            // which try we are on
        uint8_t state;          // state of radius requests
        uint8_t chap;           // set if CHAP used (is CHAP identifier)

+       uint8_t term_cause;     // Stop record: Acct-Terminate-Cause
+       char const *term_msg;   //   terminate reason

 }
 radiust;
 
 }
 radiust;
 


@@ -397,6 +545,30 @@ enum
        TUNNELUNDEF,            // Undefined
 };
 
        TUNNELUNDEF,            // Undefined
 };
 

+enum
+{
+       BUNDLEFREE,             // Not in use
+       BUNDLEOPEN,             // Active bundle
+       BUNDLEUNDEF,            // Undefined
+};
+
+enum
+{
+       GROUPEFREE,             // Not in use
+       GROUPEOPEN,             // Active bundle
+       GROUPEUNDEF             // Undefined
+};
+
+enum
+{
+       NULLCLASS = 0,          //End Point Discriminator classes
+       LOCALADDR,
+       IPADDR,
+       IEEEMACADDR,
+       PPPMAGIC,
+       PSNDN,
+};
+

 enum
 {
        RADIUSNULL,             // Not in use
 enum
 {
        RADIUSNULL,             // Not in use


@@ -406,6 +578,7 @@ enum
        RADIUSSTOP,             // sending stop accounting to RADIUS server
        RADIUSINTERIM,          // sending interim accounting to RADIUS server
        RADIUSWAIT,             // waiting timeout before available, in case delayed replies
        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
 };
 
 struct Tstats


@@ -510,6 +683,10 @@ struct Tstats
 #define SET_STAT(x, y)
 #endif
 
 #define SET_STAT(x, y)
 #endif
 

+#ifndef IFNAMSIZ
+# define IFNAMSIZ 16
+#endif
+

 typedef struct
 {
        int             debug;                          // debugging level
 typedef struct
 {
        int             debug;                          // debugging level


@@ -525,7 +702,7 @@ 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[10];                  // 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


@@ -544,13 +721,16 @@ typedef struct
        uint16_t        radiusport[MAXRADSERVER];       // radius base ports
        uint8_t         numradiusservers;               // radius server count
 
        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
 
        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;
 
 
        in_addr_t       default_dns1, default_dns2;
 


@@ -558,11 +738,11 @@ 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
 

-       int             target_uid;

        int             dump_speed;
        char            plugins[64][MAXPLUGINS];
        char            old_plugins[64][MAXPLUGINS];
        int             dump_speed;
        char            plugins[64][MAXPLUGINS];
        char            old_plugins[64][MAXPLUGINS];


@@ -573,6 +753,7 @@ 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
        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.
 
        in_addr_t       cluster_address;                // Multicast address of cluster.
                                                        // Send to this address to have everyone hear.


@@ -584,8 +765,12 @@ 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_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_undefined_tunnels;      // How many tunnels we're yet to receive from the master.

+       int             cluster_undefined_groupes;      // How many groupes we're yet to receive from the master.

        int             cluster_highest_sessionid;
        int             cluster_highest_sessionid;

+       int             cluster_highest_bundleid;
+       int             cluster_highest_groupeid;

        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_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


@@ -601,6 +786,10 @@ typedef struct
 
        int             cluster_master_min_adv;         // Master advertises routes while the number of up to date
                                                        // slaves is less than this value.
 
        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
 
 #ifdef BGP
 #define BGP_NUM_PEERS  2


@@ -610,8 +799,38 @@ typedef struct
                uint16_t as;
                int keepalive;
                int hold;
                uint16_t as;
                int keepalive;
                int hold;

+               struct in_addr update_source;

        } neighbour[BGP_NUM_PEERS];
        } neighbour[BGP_NUM_PEERS];

+       in_addr_t       nexthop_address;
+       struct in6_addr nexthop6_address;

 #endif
 #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;
+       int disable_lac_func;
+       int auth_tunnel_change_addr_src;
+       int highest_rlnsid;
+       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 grp_txrate_average_time; // caculation txrate average time (default 10s)
+       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

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


@@ -675,6 +894,43 @@ typedef struct
        int used;               // session ref count
 } ip_filtert;
 
        int used;               // session ref count
 } ip_filtert;
 

+// CDN result/error codes
+#define CDN_NONE                       0, 0
+#define CDN_TRY_ANOTHER                        2, 7
+#define CDN_ADMIN_DISC                 3, 0
+#define CDN_UNAVAILABLE                        4, 0
+
+// RADIUS Acct-Terminate-Cause values
+#define TERM_USER_REQUEST              1
+#define TERM_LOST_CARRIER              2
+#define TERM_LOST_SERVICE              3
+#define TERM_IDLE_TIMEOUT              4
+#define TERM_SESSION_TIMEOUT           5
+#define TERM_ADMIN_RESET               6
+#define TERM_ADMIN_REBOOT              7
+#define TERM_PORT_ERROR                        8
+#define TERM_NAS_ERROR                 9
+#define TERM_NAS_REQUEST               10
+#define TERM_NAS_REBOOT                        11
+#define TERM_PORT_UNNEEDED             12
+#define TERM_PORT_PREEMPTED            13
+#define TERM_PORT_SUSPENDED            14
+#define TERM_SERVICE_UNAVAILABLE       15
+#define TERM_CALLBACK                  16
+#define TERM_USER_ERROR                        17
+#define TERM_HOST_REQUEST              18
+#define TERM_SUPPLICANT_RESTART                19
+#define TERM_REAUTHENTICATION_FAILURE  20
+#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);
 
 // arp.c
 void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip);
 


@@ -683,17 +939,23 @@ 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 processipin(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);
 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);
 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);
+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);

+void protoreject(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l, uint16_t proto);
+int join_bundle(sessionidt s);

 
 
 // radius.c
 
 
 // radius.c


@@ -703,8 +965,8 @@ void processrad(uint8_t *buf, int len, char socket_index);
 void radiusretry(uint16_t r);
 uint16_t radiusnew(sessionidt s);
 void radiusclear(uint16_t r, sessionidt s);
 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);
-
+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);


@@ -716,7 +978,7 @@ 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 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, int result, int error);
+void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_error, int term_cause);

 void filter_session(sessionidt s, int filter_in, int filter_out);
 void send_garp(in_addr_t ip);
 void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);
 void filter_session(sessionidt s, int filter_in, int filter_out);
 void send_garp(in_addr_t ip);
 void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);


@@ -724,13 +986,34 @@ 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);
 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);
 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);

+void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen);
+ssize_t netlink_send(struct nlmsghdr *nh);
+void cache_ipmap(in_addr_t ip, sessionidt s);
+
+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);
+
+// grpsess.c
+sessionidt grp_getnextsession(groupidt g, in_addr_t ip);
+void grp_initdata(void);
+void grp_processvendorspecific(sessionidt s, uint8_t *pvs);
+groupidt grp_groupbysession(sessionidt s);
+groupidt grp_groupbyip(in_addr_t ip);
+void grp_setgrouproute(groupidt g, int add);
+void grp_time_changed(void);
+void grp_removesession(groupidt g, sessionidt s);
+int grp_cluster_load_groupe(groupidt g, groupsesst *new);

 
 #undef LOG
 #undef LOG_HEX
 
 #undef LOG
 #undef LOG_HEX


@@ -740,6 +1023,7 @@ int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc
 void _log(int level, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 4, 5)));
 void _log_hex(int level, const char *title, const uint8_t *data, int maxsize);
 
 void _log(int level, sessionidt s, tunnelidt t, const char *format, ...) __attribute__((format (printf, 4, 5)));
 void _log_hex(int level, const char *title, const uint8_t *data, int maxsize);
 

+

 int sessionsetup(sessionidt s, tunnelidt t);
 int run_plugins(int plugin_type, void *data);
 void rebuild_address_pool(void);
 int sessionsetup(sessionidt s, tunnelidt t);
 int run_plugins(int plugin_type, void *data);
 void rebuild_address_pool(void);


@@ -749,7 +1033,8 @@ void become_master(void);  // We're the master; kick off any required master init
 
 
 // cli.c
 
 
 // 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, ...);
 void cli_do_file(FILE *fh);
 void cli_do(int sockfd);
 int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...);


@@ -760,26 +1045,14 @@ void host_unreachable(in_addr_t destination, uint16_t id, in_addr_t source, uint
 
 
 extern tunnelt *tunnel;
 
 
 extern tunnelt *tunnel;

+extern bundlet *bundle;

 extern sessiont *session;
 extern sessionlocalt *sess_local;
 extern ippoolt *ip_address_pool;
 extern sessiont *session;
 extern sessionlocalt *sess_local;
 extern ippoolt *ip_address_pool;

+extern groupsesst *grpsession;
+extern groupidt gnextgrpid;

 #define sessionfree (session[0].next)
 
 #define sessionfree (session[0].next)
 

-#define log_backtrace(count, max) \
-if (count++ < max) { \
-       void *array[20]; \
-       char **strings; \
-       int size, i; \
-       LOG(0, 0, t, "Backtrace follows:\n"); \
-       size = backtrace(array, 10); \
-       strings = backtrace_symbols(array, size); \
-       if (strings) for (i = 0; i < size; i++) \
-       { \
-               LOG(0, 0, t, " %s\n", strings[i]); \
-       } \
-       free(strings); \
-}
-

 
 extern configt *config;
 extern time_t basetime;                // Time when this process started.
 
 extern configt *config;
 extern time_t basetime;                // Time when this process started.


@@ -790,19 +1063,24 @@ extern struct Tstats *_statistics;
 extern in_addr_t my_address;
 extern int clifd;
 extern int epollfd;
 extern in_addr_t my_address;
 extern int clifd;
 extern int epollfd;

+extern int tunidx;             // ifr_ifindex of tun device
+extern union iphash ip_hash[256];

 
 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_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)


@@ -814,19 +1092,4 @@ 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)
 
 #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__ */
 #endif /* __L2TPNS_H__ */