1997/0926/ip/ip.h (diff list | history)

1997/0926/sys/src/9/ip/ip.h:1,283 – 1998/0306/sys/src/9/ip/ip.h:1,465 (short | long | prev | next)
1997/0327		typedef ulong Ipaddr; typedef uchar byte; typedef struct Conv Conv; typedef struct Fs Fs; typedef union Hwaddr Hwaddr;
1997/0423		typedef struct Ifcconv Ifcconv;
1998/0306		typedef struct Ipself Ipself; typedef struct Iplink Iplink; typedef struct Iplifc Iplifc; typedef struct Ipmulti Ipmulti;
1997/0327		typedef struct Iproute Iproute; typedef struct Media Media;
1997/0423		typedef struct Multicast Multicast;
1998/0306		typedef struct Ipifc Ipifc; typedef struct Medium Medium;
1997/0327		typedef struct Proto Proto; typedef struct Pstate Pstate; typedef struct Tcpc Tcpc;
1998/0306		typedef struct Arpent Arpent; typedef struct Route Route;
1997/0327		enum { Addrlen= 64, Maxproto= 20, Nhash= 64, Maxincall= 5, Nchans= 256,
1998/0306		MAClen= 16, /* longest mac address */
1997/0327		MAXTTL= 255,
1997/0815		IPaddrlen= 4,
1997/0327		Ipbcast= 0xffffffff, /* ip broadcast address */ Ipbcastobs= 0, /* obsolete (but still used) ip broadcast addr */
1997/0423		Ipallsys= 0xe0000001, /* multicast for all systems */ Ipallrouter= 0xe0000002, /* multicast for all routers */
1998/0306		IPaddrlen= 16, IPv4addrlen= 4, IPv4off= 12, IPllen= 4, /* ip versions */ V4= 4, V6= 6,
1997/0327		}; enum { Announcing= 1, Announced= 2, Connecting= 3, Connected= 4, }; /* * contained in each conversation */ struct Conv { Lock; int x; /* conversation index */ Proto* p; Ipaddr laddr; /* local IP address */ Ipaddr raddr; /* remote IP address */
1998/0306		uchar laddr[IPaddrlen]; /* local IP address */ uchar raddr[IPaddrlen]; /* remote IP address */
1997/0327		int restricted; /* remote port is restricted */ ushort lport; /* local port number */ ushort rport; /* remote port number */ uint ttl; /* max time to live */ char owner[NAMELEN]; /* protections */ int perm; int inuse; /* opens of listen/data/ctl */ int length; int state; /* udp specific */ int headers; /* data src/dst headers in udp */ int reliable; /* true if reliable udp */ Conv* incall; /* calls waiting to be listened for */ Conv* next; Queue* rq; /* queued data waiting to be read */ Queue* wq; /* queued data waiting to be written */ Queue* eq; /* returned error packets */ QLock car; Rendez cr; char cerr[ERRLEN]; QLock listenq; Rendez listenr;
1998/0306		Ipmulti *multi; /* multicast bindings for this interface */
1997/0327		void* ptcl; /* protocol specific stuff */ }; union Hwaddr
1998/0306		struct Medium
1997/0327		{ byte ether[6];
1998/0306		char *name; int hsize; /* medium header size */ int minmtu; /* default min mtu */ int maxmtu; /* default max mtu */ int maclen; /* mac address length */ void (*bind)(Ipifc*, int, char**); void (*unbind)(Ipifc*); void (*bwrite)(Ipifc *ifc, Block *b, int version, uchar *ip); /* for arming interfaces to receive multicast */ void (*addmulti)(Ipifc *ifc, uchar *a, uchar *ia); void (*remmulti)(Ipifc *ifc, uchar *a, uchar *ia); /* process packets written to 'data' */ void (*pktin)(Ipifc *ifc, Block *bp); /* routes for router boards */ void (*addroute)(Ipifc *ifc, int, uchar*, uchar*, uchar*, int); void (*remroute)(Ipifc *ifc, int, uchar*, uchar*); void (*flushroutes)(Ipifc *ifc); /* for routing multicast groups */ void (*joinmulti)(Ipifc *ifc, uchar *a, uchar *ia, uchar **iap); void (*leavemulti)(Ipifc *ifc, uchar *a, uchar *ia);
1997/0327		}; enum
1998/0306		/* logical interface associated with a physical one */ struct Iplifc
1997/0327		{ METHER, /* Media types */ MFDDI, MPACKET,
1998/0306		uchar local[IPaddrlen]; uchar mask[IPaddrlen]; uchar remote[IPaddrlen]; uchar net[IPaddrlen]; Iplink *link; /* addresses linked to this lifc */ Iplifc *next;
1997/0327		};
1997/0423		/* one per multicast address per medium */ struct Multicast
1998/0306		/* binding twixt Ipself and Ipifc */ struct Iplink
1997/0423		{ Ipaddr addr;
1998/0306		Ipself *local; Iplifc *lifc; Iplink *locallink; /* next link for this local address */ Iplink *lifclink; /* next link for this ifc */ ulong expire; Iplink *next; /* free list */
1997/0423		int ref; int timeout; Multicast *next; };
1997/0327		struct Media
1998/0306		struct Ipifc
1997/0327		{ int type; /* Media type */ Chan* mchan; /* Data channel */ Chan* achan; /* Arp channel */
1997/0423		Chan* cchan; /* Control channel */
1997/0327		char* dev; /* device mfd points to */ Ipaddr myip[5]; Ipaddr mymask; Ipaddr mynetmask; Ipaddr remip; /* Address of remote side */ byte netmyip[4]; /* In Network byte order */ int arping; /* true if we mus arp */
1998/0306		RWlock; Conv *conv; /* link to its conversation structure */ char dev[64]; /* device we're attached to */ Medium *m; /* Media pointer */
1997/0327		int maxmtu; /* Maximum transfer unit */ int minmtu; /* Minumum tranfer unit */ int hsize; /* Media header size */ Hwaddr;
1998/0306		void *arg; /* medium specific */ /* these are used so that we can unbind on the fly */ Lock idlock; uchar ifcid; /* incremented each 'bind/unbind/add/remove' */ int ref; /* number of proc's using this ipifc */ Rendez wait; /* where unbinder waits for ref == 0 */ int unbinding; uchar mac[MAClen]; /* MAC address */ Iplifc *lifc; /* logical interfaces on this physical one */
1997/0327		ulong in, out; /* message statistics */ ulong inerr, outerr; /* ... */ int inuse; Conv *c; /* for packet interface */
1998/0306		};
1997/0327
1997/0423		QLock mlock; /* lock for changing *multi */ Multicast *multi; /* list of multicast addresses we're listening to */ int mactive; /* number of active multicast addresses */
1997/0327		Media* link;
1998/0306		/* * one per multicast-lifc pair used by a Conv */ struct Ipmulti { uchar ma[IPaddrlen]; uchar ia[IPaddrlen]; Ipmulti *next;
1997/0327		};
1997/0926		int Mediabooting(void);
1997/0327		int Mediaforme(byte*); int Mediaforpt2pt(byte*); Ipaddr Mediagetsrc(byte*); void Mediaclose(Media*); char* Mediaopen(int, char*, Conv*, Ipaddr, Ipaddr, Ipaddr, int, Media**); Media* Mediaroute(byte*, byte*); void Mediasetaddr(Media*, Ipaddr, Ipaddr); void Mediasetraddr(Media*, Ipaddr); Ipaddr Mediagetaddr(Media*); Ipaddr Mediagetraddr(Media*); void Mediawrite(Media*, Block*, byte*);
1997/0417		int Mediaifcread(char*, ulong, int);
1997/0423		char* Mediaifcwrite(Ifcconv*, char*, int);
1997/0327		void Mediaresolver(Media*); void Mediaread(Media*); int Mediaarp(Media*, Block*, byte*, Hwaddr*); Media* Mediafind(Iproute*);
1997/0423		Multicast* Mediacopymulti(Media*); void Mediamulticastadd(Media*, Ifcconv*, Ipaddr); void Mediamulticastrem(Media*, Ipaddr);
1997/0327		/* * one per multiplexed protocol */ struct Proto { Lock;
1998/0306		QLock;
1997/0327		char* name; /* protocol name */ int x; /* protocol index */ int ipproto; /* ip protocol type */ void (*kick)(Conv*, int); char* (*connect)(Conv*, char**, int);
1997/0403		char* (*announce)(Conv*, char**, int);
1997/0327		int (*state)(char**, Conv*);
1998/0306		char* (*bind)(Conv*, char**, int); int (*state)(Conv*, char*, int);
1997/0327		void (*create)(Conv*); void (*close)(Conv*);
1997/0423		void (*rcv)(Media*, Block*);
1998/0306		void (*rcv)(uchar*, Block*);
1997/0327		char* (*ctl)(Conv*, char**, int); void (*advise)(Block*, char*);
1997/0916		int (*stats)(char*, int);
1998/0306		int (*local)(Conv*, char*, int); int (*inuse)(Conv*);
1997/0327		Conv **conv; /* array of conversations */ int ptclsize; /* size of per protocol ctl block */ int nc; /* number of conversations */ int ac; Qid qid; /* qid for protocol directory */ ushort nextport; ushort nextrport; ulong csumerr; /* checksum errors */ ulong hlenerr; /* header length error */ ulong lenerr; /* short packet */ ulong order; /* out of order */ ulong rexmit; /* retransmissions */ }; struct Fs { Lock; int np; Proto* p[Maxproto+1]; /* list of supported protocols */ Proto* t2p[256]; /* vector of all ip protocol handlers */ }; int Fsconnected(Fs*, Conv*, char*); Conv* Fsnewcall(Fs*, Conv*, Ipaddr, ushort, Ipaddr, ushort);
1998/0306		Conv* Fsnewcall(Fs*, Conv*, uchar*, ushort, uchar*, ushort);
1997/0327		int Fspcolstats(char*, int); int Fsproto(Fs*, Proto*); int Fsbuiltinproto(Fs*, byte);
1998/0306		int Fsbuiltinproto(Fs*, uchar);
1997/0327		Conv* Fsprotoclone(Proto*, char*); Proto* Fsrcvpcol(Fs*, byte);
1998/0306		Proto* Fsrcvpcol(Fs*, uchar);
1997/0327		char* Fsstdconnect(Conv*, char**, int);
1997/0403		char* Fsstdannounce(Conv*, char**, int);
1998/0306		char* Fsstdbind(Conv*, char**, int);
1997/0327		/* log flags */
1998/0306		/* * logging */
1997/0327		enum { Logip= 1<<1, Logtcp= 1<<2, Logfs= 1<<3, Logil= 1<<4, Logicmp= 1<<5, Logudp= 1<<6, Logcompress= 1<<7, Logilmsg= 1<<8, Loggre= 1<<9, Logppp= 1<<10, Logtcpmsg= 1<<11,
1997/0423		Logigmp= 1<<12,
1997/0806		Logudpmsg= 1<<13, Logipmsg= 1<<14,
1997/0327		}; extern int logmask; /* mask of things to debug */ extern Ipaddr iponly; /* ip address to print debugging for */
1998/0306		extern uchar iponly[IPaddrlen]; /* ip address to print debugging for */ extern int iponlyset;
1997/0327		void netlogopen(void); void netlogclose(void); char* netlogctl(char*, int); long netlogread(void*, ulong, long); void netlog(int, char*, ...); #define msec TK2MS(MACHP(0)->ticks)
1998/0306		/* * iproute.c */ typedef struct RouteTree RouteTree; typedef struct Routewalk Routewalk; typedef struct V4route V4route; typedef struct V6route V6route;
1997/0327		/* Globals */ extern int debug; extern Fs fs; extern Media* media; extern int iprouting; /* true if routing turned on */
1997/0423		extern void (*igmpreportfn)(Media*, byte*);
1998/0306		enum {
1997/0327		int arpread(byte*, ulong, int); char* arpwrite(char*, int);
1997/0423		void closeifcconv(Ifcconv*);
1997/0327		Ipaddr defmask(Ipaddr); int eipconv(va_list*, Fconv*); int equivip(byte*, byte*); void fatal(byte*, ...); void hnputl(byte*, ulong); void hnputs(byte*, ushort);
1997/0903		void icmpnoconv(Block*);
1997/0327		void initfrag(int); ushort ipcsum(byte*); void (*ipextprotoiput)(Block*); Ipaddr ipgetsrc(byte*);
1997/0423		void ipiput(Media*, Block*);
1997/0327		void ipoput(Block*, int, int); int ipstats(char*, int);
1997/0423		int ismcast(byte*); int isbmcast(byte*);
1997/0327		byte* logctl(byte*); void maskip(byte*, byte*, byte*);
1997/0423		Ifcconv* newifcconv(void);
1997/0327		ulong nhgetl(byte*); ushort nhgets(byte*); void (*pktifcrcv)(Conv*, Block*);
1997/0926		ushort ptclbsum(byte*, int);
1997/0327		ushort ptclcsum(Block*, int, int); int pullblock(Block**, int); Block* pullupblock(Block*, int);
1997/0423		char* routeadd(Ipaddr, Ipaddr, Ipaddr, Media *m); void routedelete(ulong, ulong, Media *m);
1997/0327		int routeread(byte*, ulong, int); char* routewrite(char*, int);
1998/0306		/* type bits */ Rv4= (1<<0), /* this is a version 4 route */ Rifc= (1<<1), /* this route is a directly connected interface */ Rptpt= (1<<2), /* this route is a pt to pt interface */ Runi= (1<<3), /* a unicast self address */ Rbcast= (1<<4), /* a broadcast self address */ Rmulti= (1<<5), /* a multicast self address */ };
1997/0327
1998/0306		struct Routewalk { int n; int o; int h; char* p; void* state; void (*walk)(Route*, Routewalk*); }; struct RouteTree { Route* right; Route* left; Route* mid; uchar depth; uchar type; uchar ifcid; /* must match ifc->id */ Ipifc *ifc; char tag[4]; }; struct V4route { ulong address; ulong endaddress; uchar gate[IPv4addrlen]; }; struct V6route { ulong address[IPllen]; ulong endaddress[IPllen]; uchar gate[IPaddrlen]; }; struct Route { RouteTree; union { V6route v6; V4route v4; }; }; extern void v4addroute(char *tag, uchar *a, uchar *mask, uchar *gate, int type); extern void v6addroute(char *tag, uchar *a, uchar *mask, uchar *gate, int type); extern void v4delroute(uchar *a, uchar *mask); extern void v6delroute(uchar *a, uchar *mask); extern Route* v4lookup(uchar *a); extern Route* v6lookup(uchar *a); extern long routeread(char*, ulong, int); extern long routewrite(Chan*, char*, int);
1997/0327		/*
1998/0306		* arp.c */ struct Arpent { uchar ip[IPaddrlen]; uchar mac[MAClen]; Medium *type; /* media type */ Arpent* hash; Block* hold; Block* last; uint time; uint used; uchar state; }; extern int arpread(char*, ulong, int); extern int arpwrite(char*, int); extern Arpent* arpget(Block *bp, int version, Medium *type, uchar *ip, uchar *h); extern void arprelease(Arpent *a); extern Block* arpresolve(Arpent *a, Medium *type, uchar *mac); extern void arpenter(Ipifc *ifc, int version, uchar *ip, uchar *mac, Medium *type, int norefresh); /*
1997/0327		* ipaux.c */ int myetheraddr(uchar*, char*);
1997/0423		ulong parseip(uchar*, char*);
1998/0306		typedef struct Cmdbuf Cmdbuf; struct Cmdbuf { char buf[64]; char *f[16]; int nf; }; extern int myetheraddr(uchar*, char*); extern ulong parseip(uchar*, char*); extern ulong parseipmask(uchar*, char*); extern void maskip(uchar *from, uchar *mask, uchar *to); extern int parsemac(uchar *to, char *from, int len); extern uchar* defmask(uchar*); extern int isv4(uchar*); extern void v4tov6(uchar *v6, uchar *v4); extern int v6tov4(uchar *v4, uchar *v6); extern Cmdbuf* parsecmd(char *a, int n); extern int eipconv(va_list *arg, Fconv *f); #define ipcmp(x, y) memcmp(x, y, IPaddrlen) #define ipmove(x, y) memmove(x, y, IPaddrlen) extern uchar IPv4bcast[IPaddrlen]; extern uchar IPv4bcastobs[IPaddrlen]; extern uchar IPv4allsys[IPaddrlen]; extern uchar IPv4allrouter[IPaddrlen]; extern uchar IPnoaddr[IPaddrlen]; extern uchar v4prefix[IPaddrlen]; extern uchar IPallbits[IPaddrlen]; #define msec TK2MS(MACHP(0)->ticks) /* * media */ extern Medium ethermedium; extern Medium nullmedium; extern Medium pktmedium; extern Proto ipifc; /* * ipifc.c */ extern Medium* ipfindmedium(char *name); extern int ipforme(uchar *addr); extern int ipismulticast(uchar *); extern Ipifc* findipifc(uchar *remote, int type); extern void findlocalip(uchar *local, uchar *remote); extern int ipv4local(Ipifc *ifc, uchar *addr); extern int ipv6local(Ipifc *ifc, uchar *addr); extern Iplifc* iplocalonifc(Ipifc *ifc, uchar *ip); extern int ipproxyifc(Ipifc *ifc, uchar *ip); extern int ipismulticast(uchar *ip); extern int ipisbooting(void); extern int ipifccheckin(Ipifc *ifc, Medium *med); extern void ipifccheckout(Ipifc *ifc); extern int ipifcgrab(Ipifc *ifc); extern void ipifcaddroute(int, uchar*, uchar*, uchar*, int); extern void ipifcremroute(int, uchar*, uchar*); extern void ipifcremmulti(Conv *c, uchar *ma, uchar *ia); extern void ipifcaddmulti(Conv *c, uchar *ma, uchar *ia); extern char* ipifcrem(Ipifc *ifc, char **argv, int argc, int dolock); extern char* ipifcadd(Ipifc *ifc, char **argv, int argc); /* * ip.c */ extern void closeifcconv(Ifcconv*); extern void icmpnoconv(Block*); extern void initfrag(int); extern ushort ipcsum(uchar*); extern void (*ipextprotoiput)(Block*); extern void ipiput(uchar*, Block*); extern void ipoput(Block*, int, int); extern int ipstats(char*, int); extern uchar* logctl(uchar*); extern Ifcconv* newifcconv(void); extern void (*pktifcrcv)(Conv*, Block*); extern ushort ptclbsum(uchar*, int); extern ushort ptclcsum(Block*, int, int); /* * iprouter.c */ void useriprouter(uchar*, Block*); void iprouteropen(void); void iprouterclose(void); long iprouterread(void*, int); /* * global to all of the stack */ extern int debug; extern Fs fs; extern int iprouting; /* true if routing turned on */ extern void (*igmpreportfn)(Ipifc*, uchar*);