// L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.51 2005-01-07 07:17:13 bodea Exp $
+// $Id: l2tpns.h,v 1.63 2005-04-18 05:07:20 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
#define MAXCONTROL 1000 // max length control message we ever send...
#define MAXETHER (1500+18) // max packet we try sending to tun
#define MAXTEL 96 // telephone number
+#define MAXUSER 128 // username
+#define MAXPASS 128 // password
#define MAXPLUGINS 20 // maximum number of plugins to load
#define MAXRADSERVER 10 // max radius servers
#define MAXROUTE 10 // max static routes per session
#define LIBDIR "/usr/lib/l2tpns"
#endif
-#ifndef STATEDIR
-#define STATEDIR "/var/lib/l2tpns"
-#endif
-
#ifndef PLUGINDIR
#define PLUGINDIR LIBDIR // Plugins
#endif
#define FLASHDIR ETCDIR
#endif
-#ifndef DATADIR
-#define DATADIR STATEDIR
-#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 IPPOOLFILE FLASHDIR "/ip_pool" // Address pool configuration
#define CLI_TUN_KILL 0x01
-// dump header: update number if internal format changes
-#define DUMP_MAGIC "L2TPNS#" VERSION "#"
-
// structures
typedef struct // route
{
tunnelidt tunnel; // near end tunnel ID
in_addr_t ip; // IP of session set by RADIUS response (host byte order).
int ip_pool_index; // index to IP pool
- unsigned long unique_id; // unique session id
+ uint32_t unique_id; // unique session id
uint16_t nr; // next receive
uint16_t ns; // next send
uint32_t magic; // ppp magic number
uint32_t pin, pout; // packet counts
uint32_t total_cin; // This counter is never reset while a session is open
uint32_t total_cout; // This counter is never reset while a session is open
- uint32_t id; // session id
uint16_t throttle_in; // upstream throttle rate (kbps)
uint16_t throttle_out; // downstream throttle rate
clockt opened; // when started
uint16_t tbf_in; // filter bucket for throttling in from the user.
uint16_t tbf_out; // filter bucket for throttling out to the user.
uint8_t l2tp_flags; // various bit flags from the ICCN on the l2tp tunnel.
- uint8_t reserved_old_snoop; // No longer used - remove at some time
uint8_t walled_garden; // is this session gardened?
- uint8_t flags1; // additional flags (currently unused);
char random_vector[MAXTEL];
int random_vector_length;
- char user[129]; // user (needed in seesion for radius stop messages) (can we reduce this? --mo)
+ char user[MAXUSER]; // user (needed in seesion for radius stop messages)
char called[MAXTEL]; // called number
char calling[MAXTEL]; // calling number
uint32_t tx_connect_speed;
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;
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 sessionshutdown(sessionidt s, char *reason);
+void sessionkill(sessionidt s, char *reason);
+void sessionshutdown(sessionidt s, char *reason, int result, int error);
void send_garp(in_addr_t ip);
void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);
void sendipcp(tunnelidt t, sessionidt s);
extern tunnelt *tunnel;
extern sessiont *session;
-extern sessioncountt *sess_count;
+extern sessionlocalt *sess_local;
extern ippoolt *ip_address_pool;
#define sessionfree (session[0].next)
projects / l2tpns.git / blobdiff