#include <signal.h>
#include <stdlib.h>
#include <netinet/in.h>
+#include <net/ethernet.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <sys/types.h>
#define MAXADDRESS 20 // Maximum length for the Endpoint Discrminiator address
#define MAXSESSION 60000 // could be up to 65535
#define MAXTBFS 6000 // Maximum token bucket filters. Might need up to 2 * session.
+#define MAXSESSINGRP 12 // Maximum number of member links in grouped session
+#define MAXGROUPE 300 // could be up to 65535, Maximum number of grouped session
+#define MAXROUTEINGRP 15 // max static routes per group
+
+// Tunnel Id reserved for pppoe
+#define TUNNEL_ID_PPPOE 1
#define RADIUS_SHIFT 6
#define RADIUS_FDS (1 << RADIUS_SHIFT)
#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
-#define MAXFRAGNUM_MASK 511 // Must be equal to MAXFRAGNUM-1
+#define MAXFRAGNUM_MASK (MAXFRAGNUM - 1) // Must be equal to MAXFRAGNUM-1
+
+// Multi bind address constants
+#define MAX_UDPFD 4
+#define MAX_BINDADDR MAX_UDPFD
+// + 1 for the LAC Hostname
+#define MAX_NBHOSTNAME (MAX_UDPFD + 1)
+// 4 + 1 for the udplac
+#define INIT_TABUDPFD {-1, -1, -1, -1, -1}
+#define INIT_TABUDPVAR {0, 0, 0, 0, 0}
// Constants
#ifndef ETCDIR
typedef uint16_t sessionidt;
typedef uint16_t bundleidt;
typedef uint16_t tunnelidt;
+typedef uint16_t groupidt;
typedef uint32_t clockt;
typedef uint8_t hasht[16];
{
struct controls *next; // next in queue
uint16_t length; // length
- union {
- uint8_t buf[MAXCONTROL];
- uint16_t buf16[MAXCONTROL/2];
- } __attribute__ ((__transparent_union__));
+ uint8_t buf[MAXCONTROL];
}
controlt;
char class[MAXCLASS];
uint8_t ipv6prefixlen; // IPv6 route prefix length
struct in6_addr ipv6route; // Static IPv6 route
- char reserved[12]; // Space to expand structure without changing HB_VERSION
+ sessionidt forwardtosession; // LNS id_session to forward
+ uint8_t src_hwaddr[ETH_ALEN]; // MAC addr source (for pppoe sessions 6 bytes)
+ char reserved[4]; // Space to expand structure without changing HB_VERSION
}
sessiont;
+typedef struct
+{
+ uint32_t tx_rate;
+ uint32_t prev_coutgrp;
+ sessionidt sid;
+ uint8_t weight;
+}
+groupsesslistt;
+
+typedef struct
+{
+ int state; // current state (groupestate enum)
+ uint32_t time_changed;
+ groupidt prev;
+ sessionidt smax;
+ sessionidt smin;
+ groupsesslistt sesslist[MAXSESSINGRP];
+ routet route[MAXROUTEINGRP]; // static routes
+ uint8_t nbroutesgrp;
+ uint8_t nbsession;
+}
+groupsesst;
+
+union iphash
+{
+ sessionidt sess;
+ union iphash *idx;
+}; // Mapping from IP address to session structures.
+
typedef struct
{
int state; // current state (bundlestate enum)
typedef struct
{
- fragmentt fragment[MAXFRAGNUM];
- uint8_t reassembled_frame[MAXETHER]; // The reassembled frame
- uint16_t re_frame_len; // The reassembled frame length
+ fragmentt fragment[MAXFRAGNUM];
+ uint8_t reassembled_frame[MAXETHER]; // The reassembled frame
+ uint16_t re_frame_len; // The reassembled frame length
uint16_t re_frame_begin_index, re_frame_end_index; // reassembled frame begin index, end index respectively
uint16_t start_index, end_index; // start and end sequence numbers available on the fragments array respectively
uint32_t M; // Minumum frame sequence number received over all bundle members
#define SESSION_ACFC (1 << 1) // use Address-and-Control-Field-Compression
#define SESSION_STARTED (1 << 2) // RADIUS Start record sent
-// 168 bytes per tunnel
+// 328 bytes per tunnel
typedef struct
{
tunnelidt far; // far end tunnel ID
uint16_t controlc; // outstaind messages in queue
controlt *controls; // oldest message
controlt *controle; // newest message
+ uint16_t isremotelns; // != 0 if the tunnel is to remote LNS (== index on the conf remote lns)
+ uint16_t indexudp; // Index UDP file handle (in udpfd[])
+ char reserved[12]; // Space to expand structure without changing HB_VERSION
}
tunnelt;
BUNDLEUNDEF, // Undefined
};
+enum
+{
+ GROUPEFREE, // Not in use
+ GROUPEOPEN, // Active bundle
+ GROUPEUNDEF // Undefined
+};
+
enum
{
NULLCLASS = 0, //End Point Discriminator classes
int reload_config; // flag to re-read config (set by cli)
int multi_read_count; // amount of packets to read per fd in processing loop
- char tundevice[IFNAMSIZ]; // tun device name
+ char tundevicename[IFNAMSIZ]; // tun device name
char log_filename[128];
char l2tp_secret[64]; // L2TP shared secret
int num_tbfs; // number of throttle buckets
char accounting_dir[128];
+ int account_all_origin; // Accouting all origin (LAC data + Remote LNS Data + PPPOE data)
in_addr_t bind_address;
in_addr_t peer_address;
int send_garp; // Set to true to garp for vip address on startup
int cluster_undefined_sessions; // How many sessions we're yet to receive from the master.
int cluster_undefined_bundles; // How many bundles we're yet to receive from the master.
int cluster_undefined_tunnels; // How many tunnels we're yet to receive from the master.
+ int cluster_undefined_groupes; // How many groupes we're yet to receive from the master.
int cluster_highest_sessionid;
int cluster_highest_bundleid;
+ int cluster_highest_groupeid;
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 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
+ in_addr_t iftun_address;
+ int disable_lac_func;
+ int auth_tunnel_change_addr_src;
+ int highest_rlnsid;
+ uint16_t bind_portremotelns;
+ in_addr_t bind_address_remotelns;
+ char pppoe_if_to_bind[IFNAMSIZ]; // Name pppoe interface to bind
+ char pppoe_service_name[64]; // pppoe service name
+ char pppoe_ac_name[64];
+ uint8_t pppoe_hwaddr[ETH_ALEN]; // MAC addr of interface pppoe to bind
+ int pppoe_only_equal_svc_name; // Accept only PADI with service-name equal to server
+ int disable_sending_hello; // Disable l2tp sending HELLO message for Apple compatibility.
+ int disable_no_spoof; // Disable no spoof (permit load balancing client --> internet)
+ int nbudpfd; // number UDP file handle
+ int nbmultiaddress; // number multi address to bind
+ int indexlacudpfd; // Index UDP LAC file handle (in udpfd[])
+ int nbmultihostname; // number hostname, normally the same number as the nbudpfd
+ int grp_txrate_average_time; // caculation txrate average time (default 10s)
+ in_addr_t bind_n_address[MAX_BINDADDR];
+ in_addr_t iftun_n_address[MAX_BINDADDR];
+ char bind_multi_address[256];
+ char multi_hostname[512];
+ char multi_n_hostname[MAX_NBHOSTNAME][MAXHOSTNAME]; // list hostname
} configt;
enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };
#define TERM_PORT_REINIT 21
#define TERM_PORT_DISABLED 22
+// on slaves, alow BGP to withdraw cleanly before exiting
+#define QUIT_DELAY 5
+
+// quit actions (master)
+#define QUIT_FAILOVER 1 // SIGTERM: exit when all control messages have been acked (for cluster failover)
+#define QUIT_SHUTDOWN 2 // SIGQUIT: shutdown sessions/tunnels, reject new connections
+
// arp.c
void sendarp(int ifr_idx, const unsigned char* mac, in_addr_t ip);
void processpap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void processchap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void lcp_open(sessionidt s, tunnelidt t);
+void lcp_restart(sessionidt s);
void processlcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void processipcp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void processipv6cp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void processccp(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l);
void sendchap(sessionidt s, tunnelidt t);
uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype, uint8_t prio, bundleidt bid, uint8_t mp_bits);
+uint8_t *opt_makeppp(uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype, uint8_t prio, bundleidt bid, uint8_t mp_bits);
void sendlcp(sessionidt s, tunnelidt t);
void send_ipin(sessionidt s, uint8_t *buf, int len);
void sendccp(sessionidt s, tunnelidt t);
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, struct in_addr *local);
-
+int rad_tunnel_pwdecode(uint8_t *pl2tpsecret, size_t *pl2tpsecretlen, const char *radiussecret, const uint8_t * auth);
// l2tpns.c
clockt backoff(uint8_t try);
void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *tcp);
void sendipcp(sessionidt s, tunnelidt t);
void sendipv6cp(sessionidt s, tunnelidt t);
-void processudp(uint8_t *buf, int len, struct sockaddr_in *addr);
+void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexudpfd);
void processipout(uint8_t *buf, int len);
void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, uint16_t port);
int find_filter(char const *name, size_t len);
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);
int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc);
+void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen);
+ssize_t netlink_send(struct nlmsghdr *nh);
+void cache_ipmap(in_addr_t ip, sessionidt s);
+
+tunnelidt lac_new_tunnel();
+void lac_tunnelclear(tunnelidt t);
+void lac_send_SCCRQ(tunnelidt t, uint8_t * auth, unsigned int auth_len);
+void lac_send_ICRQ(tunnelidt t, sessionidt s);
+void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char *msg);
+
+// grpsess.c
+sessionidt grp_getnextsession(groupidt g, in_addr_t ip);
+void grp_initdata(void);
+void grp_processvendorspecific(sessionidt s, uint8_t *pvs);
+groupidt grp_groupbysession(sessionidt s);
+groupidt grp_groupbyip(in_addr_t ip);
+void grp_setgrouproute(groupidt g, int add);
+void grp_time_changed(void);
+void grp_removesession(groupidt g, sessionidt s);
+int grp_cluster_load_groupe(groupidt g, groupsesst *new);
#undef LOG
#undef LOG_HEX
extern sessiont *session;
extern sessionlocalt *sess_local;
extern ippoolt *ip_address_pool;
+extern groupsesst *grpsession;
+extern groupidt gnextgrpid;
#define sessionfree (session[0].next)
extern in_addr_t my_address;
extern int clifd;
extern int epollfd;
+extern int tunidx; // ifr_ifindex of tun device
+extern union iphash ip_hash[256];
struct event_data {
enum {
- FD_TYPE_CLI,
- FD_TYPE_CLUSTER,
- FD_TYPE_TUN,
- FD_TYPE_UDP,
- FD_TYPE_CONTROL,
- FD_TYPE_DAE,
+ FD_TYPE_CLI,
+ FD_TYPE_CLUSTER,
+ FD_TYPE_TUN,
+ FD_TYPE_UDP,
+ FD_TYPE_CONTROL,
+ FD_TYPE_DAE,
FD_TYPE_RADIUS,
FD_TYPE_BGP,
FD_TYPE_NETLINK,
+ FD_TYPE_PPPOEDISC,
+ FD_TYPE_PPPOESESS
} type;
- int index; // for RADIUS, BGP
+ int index; // for RADIUS, BGP, UDP
};
#define TIME (config->current_time)
projects / l2tpns.git / blobdiff