- Revise CCP, send ConfigReq once only.

[l2tpns.git] / l2tpns.h

diff --git a/l2tpns.h b/l2tpns.h
index c73727b..0825d38 100644 (file)
--- a/l2tpns.h
+++ b/l2tpns.h
@@ -1,5 +1,5 @@
 // L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.37 2004-11-25 12:41:35 bodea Exp $
+// $Id: l2tpns.h,v 1.38 2004-11-27 05:19:53 bodea Exp $
 
 #ifndef __L2TPNS_H__
 #define __L2TPNS_H__
@@ -142,7 +142,7 @@ struct cli_tunnel_actions {
 #define DUMP_MAGIC "L2TPNS#" VERSION "#"
 
 // structures
-typedef struct routes           // route
+typedef struct                 // route
 {
        ipt ip;
        ipt mask;
@@ -157,7 +157,7 @@ typedef struct controls         // control message
 }
 controlt;
 
-typedef struct sessions
+typedef struct
 {
        sessionidt next;                // next session in linked list
        sessionidt far;                 // far end session ID
@@ -199,7 +199,9 @@ typedef struct sessions
        ipt snoop_ip;                   // Interception destination IP
        u16 snoop_port;                 // Interception destination port
        u16 sid;                        // near end session id.
-       char reserved[20];              // Space to expand structure without changing HB_VERSION
+       u8 filter_in;                   // input filter index (to ip_filters[N-1]; 0 if none)
+       u8 filter_out;                  // output filter index
+       char reserved[18];              // Space to expand structure without changing HB_VERSION
 }
 sessiont;
 
@@ -207,7 +209,8 @@ sessiont;
 #define SF_LCP_ACKED   2       // LCP negotiated
 #define SF_CCP_ACKED   4       // CCP negotiated
 
-typedef struct {
+typedef struct
+{
        u32     cin;
        u32     cout;
 } sessioncountt;
@@ -216,7 +219,7 @@ typedef struct {
 #define        SESSIONACFC     2       // ACFC negotiated flags
 
 // 168 bytes per tunnel
-typedef struct tunnels
+typedef struct
 {
        tunnelidt far;          // far end tunnel ID
        ipt ip;                 // Ip for far end
@@ -239,7 +242,7 @@ typedef struct tunnels
 tunnelt;
 
 // 180 bytes per radius session
-typedef struct radiuss         // outstanding RADIUS requests
+typedef struct                 // outstanding RADIUS requests
 {
        sessionidt session;     // which session this applies to
        hasht auth;             // request authenticator
@@ -393,7 +396,7 @@ struct Tstats
 #define SET_STAT(x, y)
 #endif
 
-struct configt
+typedef struct
 {
        int             debug;                          // debugging level
        time_t          start_time;                     // time when l2tpns was started
@@ -470,16 +473,65 @@ struct configt
                int     hold;
        }               neighbour[BGP_NUM_PEERS];
 #endif
-};
+} configt;
 
 enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IP, MAC };
-struct config_descriptt
+typedef struct
 {
        char *key;
        int offset;
        int size;
        enum config_typet type;
-};
+} config_descriptt;
+
+typedef struct
+{
+       u8 op;          // operation
+#define FILTER_PORT_OP_NONE    0 // all ports match
+#define FILTER_PORT_OP_EQ      1
+#define FILTER_PORT_OP_NEQ     2
+#define FILTER_PORT_OP_GT      3
+#define FILTER_PORT_OP_LT      4
+#define FILTER_PORT_OP_RANGE   5
+       portt port;
+       portt port2;    // for range
+} ip_filter_portt;
+
+typedef struct
+{
+       int action;             // permit/deny
+#define FILTER_ACTION_DENY     1
+#define FILTER_ACTION_PERMIT   2
+       int proto;              // protocol: IPPROTO_* (netinet/in.h)
+       ipt src_ip;             // source ip
+       ipt src_wild;
+       ip_filter_portt src_ports;
+       ipt dst_ip;             // dest ip
+       ipt dst_wild;
+       ip_filter_portt dst_ports;
+       u8 tcp_flag_op;         // match type: any, all
+#define FILTER_FLAG_OP_ANY     0
+#define FILTER_FLAG_OP_ALL     1
+       u8 tcp_sflags;          // flags set
+       u8 tcp_cflags;          // flags clear
+} ip_filter_rulet;
+
+#define TCP_FLAG_FIN   0x01
+#define TCP_FLAG_SYN   0x02
+#define TCP_FLAG_RST   0x04
+#define TCP_FLAG_PSH   0x08
+#define TCP_FLAG_ACK   0x10
+#define TCP_FLAG_URG   0x20
+
+#define MAXFILTER              32
+#define MAXFILTER_RULES                32
+typedef struct
+{
+       char name[32];          // ACL name
+       int extended;           // type: 0 = standard, 1 = extended
+       ip_filter_rulet rules[MAXFILTER_RULES];
+       int used;               // session ref count
+} ip_filtert;
 
 // arp.c
 void sendarp(int ifr_idx, const unsigned char* mac, ipt ip);
@@ -570,7 +622,7 @@ if (count++ < max) { \
 }
 
 
-extern struct configt *config;
+extern configt *config;
 extern time_t basetime;                // Time when this process started.
 extern time_t time_now;                // Seconds since EPOCH.
 extern u32 last_id;