first version of the LAC functionality

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index 953c058..e83234d 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -49,7 +49,7 @@
 #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
@@ -261,6 +261,7 @@ typedef struct {
        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;
@@ -320,7 +321,12 @@ typedef struct
        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
+       char reserved[10];              // Space to expand structure without changing HB_VERSION
+#else
        char reserved[12];              // Space to expand structure without changing HB_VERSION
+#endif
 }
 sessiont;
 
@@ -408,6 +414,11 @@ typedef struct
 
        // 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
@@ -740,6 +751,13 @@ 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
+#ifdef LAC
+       int highest_rlnsid;
+#endif
 } configt;
 
 enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };
@@ -833,6 +851,13 @@ 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);
 
@@ -887,12 +912,20 @@ 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