// L2TPNS Global Stuff
-// $Id: l2tpns.h,v 1.62 2005/04/18 04:18:15 bodea Exp $
+// $Id: l2tpns.h,v 1.80 2005/06/28 14:48:27 bodea Exp $
#ifndef __L2TPNS_H__
#define __L2TPNS_H__
#include <sys/types.h>
#include <libcli.h>
-#define VERSION "2.1.0"
+#define VERSION "2.1.2"
// Limits
#define MAXTUNNEL 500 // 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 RADIUS_MASK ((unsigned short)(((unsigned short)~0) >> (16 - RADIUS_SHIFT)))
-#define MAXRADIUS ((unsigned long)(1L << RADIUS_SHIFT) * 255)
+#define RADIUS_SHIFT 6
+#define RADIUS_FDS (1 << RADIUS_SHIFT)
+#define RADIUS_MASK ((1 << RADIUS_SHIFT) - 1)
+#define MAXRADIUS (1 << (8 + RADIUS_SHIFT))
#define T_UNDEF (0xffff) // A tunnel ID that won't ever be used. Mark session as undefined.
#define T_FREE (0) // A tunnel ID that won't ever be used. Mark session as free.
#define ECHO_TIMEOUT 60 // Time between last packet sent and LCP ECHO generation
#define IDLE_TIMEOUT 240 // Time between last packet sent and LCP ECHO generation
#define BUSY_WAIT_TIME 3000 // 5 minutes in 1/10th seconds to wait for radius to cleanup on shutdown
+#define DEFAULT_MRU 1452 // maximum packet size to avoid fragmentation when LNS ethernet MTU is 1500
// Constants
#ifndef ETCDIR
#define ACCT_SHUT_TIME 600 // 1 minute for counters of shutdown sessions
#define L2TPPORT 1701 // L2TP port
#define RADPORT 1645 // old radius port...
+#define DAEPORT 3799 // DAE port
#define PKTARP 0x0806 // ARP packet type
#define PKTIP 0x0800 // IPv4 packet type
#define PKTIPV6 0x86DD // IPv6 packet type
AccessReject,
AccountingRequest,
AccountingResponse,
- AccessChallenge = 11
+ AccessChallenge = 11,
+ DisconnectRequest = 40,
+ DisconnectACK,
+ DisconnectNAK,
+ CoARequest,
+ CoAACK,
+ CoANAK
};
// Types
sessionidt next; // next session in linked list
sessionidt far; // far end session ID
tunnelidt tunnel; // near end tunnel ID
+ uint8_t l2tp_flags; // various bit flags from the ICCN on the l2tp tunnel.
+ uint8_t flags; // Various session flags.
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 cin, cout; // byte counts
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
+ uint32_t cin, cout; // byte counts
+ uint32_t cin_wrap, cout_wrap; // byte counter wrap count (RADIUS accounting giagawords)
+ uint32_t cin_delta, cout_delta; // byte count changes (for dump_session())
uint16_t throttle_in; // upstream throttle rate (kbps)
uint16_t throttle_out; // downstream throttle rate
+ uint8_t filter_in; // input filter index (to ip_filters[N-1]; 0 if none)
+ uint8_t filter_out; // output filter index
+ uint16_t mru; // maximum receive unit
clockt opened; // when started
clockt die; // being closed, when to finally free
time_t last_packet; // Last packet from the user (used for idle timeouts)
in_addr_t dns1, dns2; // DNS servers
routet route[MAXROUTE]; // static routes
- uint16_t radius; // which radius session is being used (0 for not waiting on authentication)
- uint16_t mru; // maximum receive unit
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 random_vector[MAXTEL];
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;
uint32_t rx_connect_speed;
- uint32_t flags; // Various session flags.
in_addr_t snoop_ip; // Interception destination IP
uint16_t snoop_port; // Interception destination port
- 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
- struct in6_addr ipv6route; // Static IPv6 route
+ uint8_t walled_garden; // is this session gardened?
uint8_t ipv6prefixlen; // IPv6 route prefix length
- char reserved[1]; // Space to expand structure without changing HB_VERSION
+ struct in6_addr ipv6route; // Static IPv6 route
+ char reserved[16]; // Space to expand structure without changing HB_VERSION
}
sessiont;
typedef struct
{
+ // packet counters
+ uint32_t pin;
+ uint32_t pout;
+
// byte counters
uint32_t cin;
uint32_t cout;
clockt last_packet_out;
uint32_t packets_out;
uint32_t packets_dropped;
+
+ // RADIUS session in use
+ uint16_t radius;
+
+ // interim RADIUS
+ time_t last_interim;
} sessionlocalt;
#define SESSIONPFC 1 // PFC negotiated flags
RADIUSIPCP, // sending IPCP to end user
RADIUSSTART, // sending start accounting to RADIUS server
RADIUSSTOP, // sending stop accounting to RADIUS server
+ RADIUSINTERIM, // sending interim accounting to RADIUS server
RADIUSWAIT, // waiting timeout before available, in case delayed replies
- RADIUSDEAD, // errored while talking to radius server.
};
struct Tstats
char config_file[128];
int reload_config; // flag to re-read config (set by cli)
- int cleanup_interval; // interval between regular cleanups (in seconds)
int multi_read_count; // amount of packets to read per fd in processing loop
char tundevice[10]; // tun device name
char radiussecret[64];
int radius_accounting;
+ int radius_interim;
in_addr_t radiusserver[MAXRADSERVER]; // radius servers
uint16_t radiusport[MAXRADSERVER]; // radius base ports
uint8_t numradiusservers; // radius server count
- short num_radfds; // Number of radius filehandles allocated
+
+ uint16_t radius_dae_port; // local port for radius dae
char radius_authtypes_s[32]; // list of valid authentication types (chap, pap) in order of preference
int radius_authtypes;
int radius_authprefer;
+ int allow_duplicate_users; // allow multiple logins with the same username
+
in_addr_t default_dns1, default_dns2;
unsigned long rl_rate; // default throttle rate
char old_plugins[64][MAXPLUGINS];
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 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 max_packets; // DoS prevention: per session limit of packets/0.1s
int cluster_highest_sessionid;
int cluster_highest_tunnelid;
clockt cluster_last_hb; // Last time we saw a heartbeat from the master.
+ int cluster_last_hb_ver; // Heartbeat version last seen from master
int cluster_num_changes; // Number of changes queued.
int cluster_hb_interval; // How often to send a heartbeat.
struct in6_addr ipv6_prefix; // Our IPv6 network pool.
+
+ int cluster_master_min_adv; // Master advertises routes while the number of up to date
+ // slaves is less than this value.
+
#ifdef BGP
#define BGP_NUM_PEERS 2
uint16_t as_number;
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);
-void initlcp(tunnelidt t, sessionidt s);
+void sendlcp(tunnelidt t, sessionidt s, int authtype);
void send_ipin(sessionidt s, uint8_t *buf, int len);
void radiusretry(uint16_t r);
uint16_t radiusnew(sessionidt s);
void radiusclear(uint16_t r, sessionidt s);
+void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen);
// l2tpns.c
sessionidt sessionbyip(in_addr_t ip);
sessionidt sessionbyipv6(struct in6_addr ip);
sessionidt sessionbyuser(char *username);
+void increment_counter(uint32_t *counter, uint32_t *wrap, uint32_t delta);
void random_data(uint8_t *buf, int len);
void sessionkill(sessionidt s, char *reason);
void sessionshutdown(sessionidt s, char *reason, int result, int error);
+void filter_session(sessionidt s, int filter_in, int filter_out);
void send_garp(in_addr_t ip);
void tunnelsend(uint8_t *buf, uint16_t l, tunnelidt t);
void sendipcp(tunnelidt t, sessionidt s);
void processudp(uint8_t *buf, int len, struct sockaddr_in *addr);
void snoop_send_packet(char *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);
void *array[20]; \
char **strings; \
int size, i; \
- LOG(0, 0, t, "Backtrace follows"); \
+ LOG(0, 0, t, "Backtrace follows:\n"); \
size = backtrace(array, 10); \
strings = backtrace_symbols(array, size); \
if (strings) for (i = 0; i < size; i++) \
{ \
- LOG(0, 0, t, "%s\n", strings[i]); \
+ LOG(0, 0, t, " %s\n", strings[i]); \
} \
free(strings); \
}
extern configt *config;
extern time_t basetime; // Time when this process started.
extern time_t time_now; // Seconds since EPOCH.
+extern char main_quit;
extern uint32_t last_id;
extern struct Tstats *_statistics;
extern in_addr_t my_address;
extern int tun_write(uint8_t *data, int size);
extern int clifd;
-
+extern int epollfd;
+
+struct event_data {
+ enum {
+ FD_TYPE_CLI,
+ FD_TYPE_CLUSTER,
+ FD_TYPE_TUN,
+ FD_TYPE_UDP,
+ FD_TYPE_CONTROL,
+ FD_TYPE_DAE,
+ FD_TYPE_RADIUS,
+ FD_TYPE_BGP,
+ } type;
+ int index; // for RADIUS, BGP
+};
#define TIME (config->current_time)
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