// L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.50 2004-12-18 01:20:05 bodea Exp $
+// $Id: l2tpns.h,v 1.57 2005-02-14 06:58:39 bodea Exp $
#ifndef __L2TPNS_H__
#define __L2TPNS_H__
// Limits
#define MAXTUNNEL 500 // could be up to 65535
-#define MAXSESSION 50000 // could be up to 65535
+#define MAXSESSION 60000 // could be up to 65535
#define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session.
#define RADIUS_SHIFT 5
#endif
#define TUNDEVICE "/dev/net/tun"
+#define RANDOMDEVICE "/dev/urandom" // default, not as secure as /dev/random but non-blocking
#define STATEFILE DATADIR "/state.dump" // State dump file
#define CONFIGFILE FLASHDIR "/startup-config" // Configuration file
#define CLIUSERS FLASHDIR "/users" // CLI Users file
#define PPPIPV6 0x0057
#define PPPMP 0x003D
#define MIN_IP_SIZE 0x19
-enum
-{
+
+enum {
ConfigReq = 1,
ConfigAck,
ConfigNak,
IdentRequest
};
+enum {
+ AccessRequest = 1,
+ AccessAccept,
+ AccessReject,
+ AccountingRequest,
+ AccountingResponse,
+ AccessChallenge = 11
+};
+
// Types
typedef uint16_t sessionidt;
typedef uint16_t tunnelidt;
uint16_t sid; // near end session id.
uint8_t filter_in; // input filter index (to ip_filters[N-1]; 0 if none)
uint8_t filter_out; // output filter index
- char reserved[18]; // Space to expand structure without changing HB_VERSION
+ struct in6_addr ipv6route; // Static IPv6 route
+ uint8_t ipv6prefixlen; // IPv6 route prefix length
+ char reserved[1]; // Space to expand structure without changing HB_VERSION
}
sessiont;
#define SF_CCP_ACKED 4 // CCP negotiated
#define SF_IPV6CP_ACKED 8 // IPv6 negotiated
#define SF_IPV6_NACKED 16 // IPv6 rejected
+#define SF_IPV6_ROUTED 32 // advertised v6 route
+
+#define AUTHPAP 1 // allow PAP
+#define AUTHCHAP 2 // allow CHAP
typedef struct
{
+ // byte counters
uint32_t cin;
uint32_t cout;
-} sessioncountt;
+
+ // DoS prevention
+ clockt last_packet_out;
+ uint32_t packets_out;
+ uint32_t packets_dropped;
+} sessionlocalt;
#define SESSIONPFC 1 // PFC negotiated flags
#define SESSIONACFC 2 // ACFC negotiated flags
uint32_t tun_tx_bytes;
uint32_t tun_rx_errors;
uint32_t tun_tx_errors;
+ uint32_t tun_rx_dropped;
uint32_t tunnel_rx_packets;
uint32_t tunnel_tx_packets;
#ifdef STATISTICS
uint32_t call_processtun;
uint32_t call_processipout;
+ uint32_t call_processipv6out;
uint32_t call_processudp;
uint32_t call_sessionbyip;
+ uint32_t call_sessionbyipv6;
uint32_t call_sessionbyuser;
uint32_t call_sendarp;
uint32_t call_sendipcp;
+ uint32_t call_processipv6cp;
uint32_t call_tunnelsend;
uint32_t call_sessionkill;
uint32_t call_sessionshutdown;
uint32_t call_processlcp;
uint32_t call_processipcp;
uint32_t call_processipin;
+ uint32_t call_processipv6in;
uint32_t call_processccp;
uint32_t call_sendchap;
uint32_t call_processrad;
uint32_t call_radiussend;
uint32_t call_radiusretry;
+ uint32_t call_random_data;
#endif
};
#ifdef STATISTICS
#ifdef STAT_CALLS
-#define CSTAT(x) STAT(x)
+#define CSTAT(x) STAT(call_ ## x)
#else
#define CSTAT(x)
#endif
char log_filename[128];
char l2tpsecret[64];
+ char random_device[256]; // random device path, defaults to RANDOMDEVICE
+
char radiussecret[64];
int radius_accounting;
in_addr_t radiusserver[MAXRADSERVER]; // radius servers
uint8_t numradiusservers; // radius server count
short num_radfds; // Number of radius filehandles allocated
+ char radius_authtypes_s[32]; // list of valid authentication types (chap, pap) in order of preference
+ int radius_authtypes;
+ int radius_authprefer;
+
in_addr_t default_dns1, default_dns2;
unsigned long rl_rate; // default throttle rate
int num_tbfs; // number of throttle buckets
- int save_state;
char accounting_dir[128];
in_addr_t bind_address;
in_addr_t peer_address;
int next_tbf; // Next HTB id available to use
int scheduler_fifo; // If the system has multiple CPUs, use FIFO scheduling policy for this process.
int lock_pages; // Lock pages into memory.
- int icmp_rate; // Max number of ICMP unreachable per second to send>
+ int icmp_rate; // Max number of ICMP unreachable per second to send
+ int max_packets; // DoS prevention: per session limit of packets/0.1s
in_addr_t cluster_address; // Multicast address of cluster.
// Send to this address to have everyone hear.
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.
+
#ifdef BGP
#define BGP_NUM_PEERS 2
uint16_t as_number;
void processchap(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
void processlcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
void processipcp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
+void processipv6cp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
void processipin(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
+void processipv6in(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
void processccp(tunnelidt t, sessionidt s, uint8_t *p, uint16_t l);
void sendchap(tunnelidt t, sessionidt s);
uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, tunnelidt t, sessionidt s, uint16_t mtype);
// l2tpns.c
clockt backoff(uint8_t try);
+void send_ipv6_ra(tunnelidt t, sessionidt s, struct in6_addr *ip);
+void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add);
sessionidt sessionbyip(in_addr_t ip);
+sessionidt sessionbyipv6(struct in6_addr ip);
sessionidt sessionbyuser(char *username);
+void random_data(uint8_t *buf, int len);
+void sessionkill(sessionidt s, char *reason);
void sessionshutdown(sessionidt s, char *reason);
void send_garp(in_addr_t ip);
void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);
extern tunnelt *tunnel;
extern sessiont *session;
-extern sessioncountt *sess_count;
+extern sessionlocalt *sess_local;
extern ippoolt *ip_address_pool;
#define sessionfree (session[0].next)
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