fix comment

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index 240c7d4..628b8a1 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -1,5 +1,5 @@
 // L2TPNS Global Stuff
 // L2TPNS Global Stuff

-// $Id: l2tpns.h,v 1.112 2006/04/13 11:14:35 bodea Exp $
+// $Id: l2tpns.h,v 1.120 2006/10/23 02:51:53 bodea Exp $

 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__


@@ -14,10 +14,15 @@
 #include <sys/types.h>
 #include <libcli.h>
 
 #include <sys/types.h>
 #include <libcli.h>
 

-#define VERSION        "2.1.17"
+#define VERSION        "2.2.0"

 
 // 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   10              // 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.
 
 #define MAXSESSION     60000           // could be up to 65535
 #define MAXTBFS                6000            // Maximum token bucket filters. Might need up to 2 * session.
 


@@ -43,10 +48,14 @@
 #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

-#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 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
+

 // Constants
 #ifndef ETCDIR
 #define ETCDIR         "/etc/l2tpns"
 // Constants
 #ifndef ETCDIR
 #define ETCDIR         "/etc/l2tpns"


@@ -147,7 +156,16 @@ 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) ({                             \


@@ -177,6 +195,7 @@ enum {
 
 // Types
 typedef uint16_t sessionidt;
 
 // Types
 typedef uint16_t sessionidt;

+typedef uint16_t bundleidt;

 typedef uint16_t tunnelidt;
 typedef uint32_t clockt;
 typedef uint8_t hasht[16];
 typedef uint16_t tunnelidt;
 typedef uint32_t clockt;
 typedef uint8_t hasht[16];


@@ -222,6 +241,17 @@ 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 {
+       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


@@ -252,7 +282,10 @@ typedef struct
        uint16_t mru;                   // maximum receive unit
        clockt opened;                  // when started
        clockt die;                     // being closed, when to finally free
        uint16_t mru;                   // maximum receive unit
        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.
        in_addr_t dns1, dns2;           // DNS servers
        routet route[MAXROUTE];         // static routes
        uint16_t tbf_in;                // filter bucket for throttling in from the user.


@@ -264,6 +297,10 @@ typedef struct
        char calling[MAXTEL];           // calling number
        uint32_t tx_connect_speed;
        uint32_t rx_connect_speed;
        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
        uint8_t walled_garden;          // is this session gardened?
        in_addr_t snoop_ip;             // Interception destination IP
        uint16_t snoop_port;            // Interception destination port
        uint8_t walled_garden;          // is this session gardened?


@@ -273,6 +310,33 @@ typedef struct
 }
 sessiont;
 
 }
 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
+}
+bundlet;
+
+typedef struct
+{
+       fragmentt fragment[MAXFRAGNUM];
+       uint8_t reassembled_frame[MAXETHER];    // The reassembled frame
+       uint16_t re_frame_len;                  // The reassembled frame length
+}
+fragmentationt;
+

 #define AUTHPAP                1       // allow PAP
 #define AUTHCHAP       2       // allow CHAP
 
 #define AUTHPAP                1       // allow PAP
 #define AUTHCHAP       2       // allow CHAP
 


@@ -302,6 +366,15 @@ 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;


@@ -398,6 +471,23 @@ enum
        TUNNELUNDEF,            // Undefined
 };
 
        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
 enum
 {
        RADIUSNULL,             // Not in use


@@ -545,13 +635,16 @@ 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

+       char            guest_user[MAXUSER];            // allow multiple logins to guest account username

 
        in_addr_t       default_dns1, default_dns2;
 
 
        in_addr_t       default_dns1, default_dns2;
 


@@ -563,7 +656,6 @@ typedef struct
        in_addr_t       peer_address;
        int             send_garp;                      // Set to true to garp for vip address on startup
 
        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];


@@ -574,6 +666,7 @@ 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.


@@ -585,8 +678,10 @@ 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_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_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
        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


@@ -596,13 +691,11 @@ 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_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

-
-       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.
 
        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.
+

 #ifdef BGP
 #define BGP_NUM_PEERS  2
        uint16_t as_number;
 #ifdef BGP
 #define BGP_NUM_PEERS  2
        uint16_t as_number;


@@ -718,14 +811,17 @@ 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 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);

 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);
 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


@@ -793,6 +889,7 @@ 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;