Add a echo_timeout configuration option.

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index 8e3d26e..8ac2583 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 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
 #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


@@ -57,10 +57,10 @@
 #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 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     750             // Maximum length for Multilink fragment (MTU / 2 sessions)
-#define MAXFRAGNUM     128             // Maximum number of Multilink fragment in a bundle (must be in the form of 2^X)
+#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
                                        // it's not expected to have a space for more than 10 unassembled packets = 10 * MAXBUNDLESES

-#define        MAXFRAGNUM_MASK 127             // Must be equal to MAXFRAGNUM-1
+#define        MAXFRAGNUM_MASK 511             // Must be equal to MAXFRAGNUM-1

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


@@ -258,8 +258,10 @@ typedef struct {
 
 typedef struct {
        sessionidt sid;                 // Fragment originating session
 
 typedef struct {
        sessionidt sid;                 // Fragment originating session

+       tunnelidt tid;                  // Fragment originating tunnel

        uint8_t flags;                  // MP frame flags
        uint32_t seq;                   // fragment seq num
        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;
         uint16_t length;                // Fragment length
         uint8_t data[MAXFRAGLEN];       // Fragment data
 } fragmentt;


@@ -407,6 +409,11 @@ typedef struct
 
        // Last Multilink frame sequence number received
        uint32_t last_seq;
 
        // 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


@@ -739,6 +746,10 @@ typedef struct
        in_addr_t       nexthop_address;
        struct in6_addr nexthop6_address;
 #endif
        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

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