typedef struct Conv Conv;typedef struct Fs Fs;typedef union Hwaddr Hwaddr;typedef struct IP IP;typedef struct IPaux IPaux;typedef struct Ipself Ipself;typedef struct Ipselftab Ipselftab;typedef struct Iplink Iplink;typedef struct Iplifc Iplifc;typedef struct Ipmulti Ipmulti;typedef struct Ipifc Ipifc;typedef struct Iphash Iphash;typedef struct Ipht Ipht;typedef struct Netlog Netlog;typedef struct Medium Medium;typedef struct Proto Proto;typedef struct Arpent Arpent;typedef struct Arp Arp;typedef struct Route Route; typedef struct Routerparams Routerparams;typedef struct Hostparams Hostparams;typedef struct v6router v6router;typedef struct v6params v6params; #pragma incomplete Arp#pragma incomplete Ipself#pragma incomplete Ipselftab#pragma incomplete IP#pragma incomplete Netlog enum{ Addrlen= 64, Maxproto= 20, Nhash= 64, Maxincall= 128, Nchans= 1024, MAClen= 16, /* longest mac address */ MAXTTL= 255, DFLTTOS= 0, IPaddrlen= 16, IPv4addrlen= 4, IPv4off= 12, IPllen= 4, /* ip versions */ V4= 4, V6= 6, IP_VER4= 0x40, IP_VER6= 0x60, /* 2^Lroot trees in the root table */ Lroot= 10, Maxpath = 64,}; enum{ Idle= 0, Announcing= 1, Announced= 2, Connecting= 3, Connected= 4,}; /* * one per conversation directory */struct Conv{ QLock; int x; /* conversation index */ Proto* p; int restricted; /* remote port is restricted */ uint ttl; /* max time to live */ uint tos; /* type of service */ int ignoreadvice; /* don't terminate connection on icmp errors */ uchar ipversion; uchar laddr[IPaddrlen]; /* local IP address */ uchar raddr[IPaddrlen]; /* remote IP address */ ushort lport; /* local port number */ ushort rport; /* remote port number */ char *owner; /* 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 */ Queue* sq; /* snooping queue */ Ref snoopers; /* number of processes with snoop open */ QLock car; Rendez cr; char cerr[ERRMAX]; QLock listenq; Rendez listenr; Ipmulti *multi; /* multicast bindings for this interface */ void* ptcl; /* protocol specific stuff */ Route *r; /* last route used */ ulong rgen; /* routetable generation for *r */}; struct Medium{ char *name; int hsize; /* medium header size */ int mintu; /* default min mtu */ int maxtu; /* 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)(Fs *f, 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); void (*leavemulti)(Ipifc *ifc, uchar *a, uchar *ia); /* address resolution */ void (*ares)(Fs*, int, uchar*, uchar*, int, int); /* resolve */ void (*areg)(Ipifc*, uchar*); /* register */ /* v6 address generation */ void (*pref2addr)(uchar *pref, uchar *ea); int unbindonclose; /* if non-zero, unbind on last close */}; /* logical interface associated with a physical one */struct Iplifc{ uchar local[IPaddrlen]; uchar mask[IPaddrlen]; uchar remote[IPaddrlen]; uchar net[IPaddrlen]; uchar tentative; /* =1 => v6 dup disc on, =0 => confirmed unique */ uchar onlink; /* =1 => onlink, =0 offlink. */ uchar autoflag; /* v6 autonomous flag */ long validlt; /* v6 valid lifetime */ long preflt; /* v6 preferred lifetime */ long origint; /* time when addr was added */ Iplink *link; /* addresses linked to this lifc */ Iplifc *next;}; /* binding twixt Ipself and Iplifc */struct Iplink{ Ipself *self; Iplifc *lifc; Iplink *selflink; /* next link for this local address */ Iplink *lifclink; /* next link for this ifc */ ulong expire; Iplink *next; /* free list */ int ref;}; /* rfc 2461, pp.40—43. */ /* default values, one per stack */struct Routerparams { int mflag; /* flag: managed address configuration */ int oflag; /* flag: other stateful configuration */ int maxraint; /* max. router adv interval (ms) */ int minraint; /* min. router adv interval (ms) */ int linkmtu; /* mtu options */ int reachtime; /* reachable time */ int rxmitra; /* retransmit interval */ int ttl; /* cur hop count limit */ int routerlt; /* router lifetime */}; struct Hostparams { int rxmithost;}; struct Ipifc{ RWlock; Conv *conv; /* link to its conversation structure */ char dev[64]; /* device we're attached to */ Medium *medium; /* Media pointer */ int maxtu; /* Maximum transfer unit */ int mintu; /* Minumum tranfer unit */ int mbps; /* megabits per second */ void *arg; /* medium specific */ int reassemble; /* reassemble IP packets before forwarding */ /* 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 */ ulong in, out; /* message statistics */ ulong inerr, outerr; /* ... */ uchar sendra6; /* flag: send router advs on this ifc */ uchar recvra6; /* flag: recv router advs on this ifc */ Routerparams rp; /* router parameters as in RFC 2461, pp.40—43. used only if node is router */}; /* * one per multicast-lifc pair used by a Conv */struct Ipmulti{ uchar ma[IPaddrlen]; uchar ia[IPaddrlen]; Ipmulti *next;}; /* * hash table for 2 ip addresses + 2 ports */enum{ Nipht= 521, /* convenient prime */ IPmatchexact= 0, /* match on 4 tuple */ IPmatchany, /* *!* */ IPmatchport, /* *!port */ IPmatchaddr, /* addr!* */ IPmatchpa, /* addr!port */};struct Iphash{ Iphash *next; Conv *c; int match;};struct Ipht{ Lock; Iphash *tab[Nipht];};void iphtadd(Ipht*, Conv*);void iphtrem(Ipht*, Conv*);Conv* iphtlook(Ipht *ht, uchar *sa, ushort sp, uchar *da, ushort dp); /* * one per multiplexed protocol */struct Proto{ QLock; char* name; /* protocol name */ int x; /* protocol index */ int ipproto; /* ip protocol type */ char* (*connect)(Conv*, char**, int); char* (*announce)(Conv*, char**, int); char* (*bind)(Conv*, char**, int); int (*state)(Conv*, char*, int); void (*create)(Conv*); void (*close)(Conv*); void (*rcv)(Proto*, Ipifc*, Block*); char* (*ctl)(Conv*, char**, int); void (*advise)(Proto*, Block*, char*); int (*stats)(Proto*, char*, int); int (*local)(Conv*, char*, int); int (*remote)(Conv*, char*, int); int (*inuse)(Conv*); int (*gc)(Proto*); /* returns true if any conversations are freed */ Fs *f; /* file system this proto is part of */ 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; void *priv;}; /* * one per IP protocol stack */struct Fs{ RWlock; int dev; int np; Proto* p[Maxproto+1]; /* list of supported protocols */ Proto* t2p[256]; /* vector of all protocols */ Proto* ipifc; /* kludge for ipifcremroute & ipifcaddroute */ Proto* ipmux; /* kludge for finding an ip multiplexor */ IP *ip; Ipselftab *self; Arp *arp; v6params *v6p; Route *v4root[1<<Lroot]; /* v4 routing forest */ Route *v6root[1<<Lroot]; /* v6 routing forest */ Route *queue; /* used as temp when reinjecting routes */ Netlog *alog; char ndb[1024]; /* an ndb entry for this interface */ int ndbvers; long ndbmtime;}; /* one per default router known to host */struct v6router { uchar inuse; Ipifc *ifc; int ifcid; uchar routeraddr[IPaddrlen]; long ltorigin; Routerparams rp;}; struct v6params{ Routerparams rp; /* v6 params, one copy per node now */ Hostparams hp; v6router v6rlist[3]; /* max 3 default routers, currently */ int cdrouter; /* uses only v6rlist[cdrouter] if */ /* cdrouter >= 0. */}; int Fsconnected(Conv*, char*);Conv* Fsnewcall(Conv*, uchar*, ushort, uchar*, ushort, uchar);int Fspcolstats(char*, int);int Fsproto(Fs*, Proto*);int Fsbuiltinproto(Fs*, uchar);Conv* Fsprotoclone(Proto*, char*);Proto* Fsrcvpcol(Fs*, uchar);Proto* Fsrcvpcolx(Fs*, uchar);char* Fsstdconnect(Conv*, char**, int);char* Fsstdannounce(Conv*, char**, int);char* Fsstdbind(Conv*, char**, int);ulong scalednconv(void);void closeconv(Conv*);/* * logging */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, Logtcprxmt= 1<<11, Logigmp= 1<<12, Logudpmsg= 1<<13, Logipmsg= 1<<14, Logrudp= 1<<15, Logrudpmsg= 1<<16, Logesp= 1<<17, Logtcpwin= 1<<18,}; void netloginit(Fs*);void netlogopen(Fs*);void netlogclose(Fs*);void netlogctl(Fs*, char*, int);long netlogread(Fs*, void*, ulong, long);void netlog(Fs*, int, char*, ...);void ifcloginit(Fs*);long ifclogread(Fs*, Chan *,void*, ulong, long);void ifclog(Fs*, uchar *, int);void ifclogopen(Fs*, Chan*);void ifclogclose(Fs*, Chan*); /* * iproute.c */typedef struct RouteTree RouteTree;typedef struct Routewalk Routewalk;typedef struct V4route V4route;typedef struct V6route V6route; enum{ /* 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 */ Rproxy= (1<<6), /* this route should be proxied */}; struct Routewalk{ int o; int h; char* p; char* e; 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]; int ref;}; 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(Fs *f, char *tag, uchar *a, uchar *mask, uchar *gate, int type);extern void v6addroute(Fs *f, char *tag, uchar *a, uchar *mask, uchar *gate, int type);extern void v4delroute(Fs *f, uchar *a, uchar *mask, int dolock);extern void v6delroute(Fs *f, uchar *a, uchar *mask, int dolock);extern Route* v4lookup(Fs *f, uchar *a, Conv *c);extern Route* v6lookup(Fs *f, uchar *a, Conv *c);extern long routeread(Fs *f, char*, ulong, int);extern long routewrite(Fs *f, Chan*, char*, int);extern void routetype(int, char*);extern void ipwalkroutes(Fs*, Routewalk*);extern void convroute(Route*, uchar*, uchar*, uchar*, char*, int*); /* * devip.c */Lines 1–500 of 645. 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typedef struct Conv Conv; typedef struct Fs Fs; typedef union Hwaddr Hwaddr; typedef struct IP IP; typedef struct IPaux IPaux; typedef struct Ipself Ipself; typedef struct Ipselftab Ipselftab; typedef struct Iplink Iplink; typedef struct Iplifc Iplifc; typedef struct Ipmulti Ipmulti; typedef struct Ipifc Ipifc; typedef struct Iphash Iphash; typedef struct Ipht Ipht; typedef struct Netlog Netlog; typedef struct Medium Medium; typedef struct Proto Proto; typedef struct Arpent Arpent; typedef struct Arp Arp; typedef struct Route Route; typedef struct Routerparams Routerparams; typedef struct Hostparams Hostparams; typedef struct v6router v6router; typedef struct v6params v6params; #pragma incomplete Arp #pragma incomplete Ipself #pragma incomplete Ipselftab #pragma incomplete IP #pragma incomplete Netlog enum { Addrlen= 64, Maxproto= 20, Nhash= 64, Maxincall= 128, Nchans= 1024, MAClen= 16, /* longest mac address */ MAXTTL= 255, DFLTTOS= 0, IPaddrlen= 16, IPv4addrlen= 4, IPv4off= 12, IPllen= 4, /* ip versions */ V4= 4, V6= 6, IP_VER4= 0x40, IP_VER6= 0x60, /* 2^Lroot trees in the root table */ Lroot= 10, Maxpath = 64, }; enum { Idle= 0, Announcing= 1, Announced= 2, Connecting= 3, Connected= 4, }; /* * one per conversation directory */ struct Conv { QLock; int x; /* conversation index */ Proto* p; int restricted; /* remote port is restricted */ uint ttl; /* max time to live */ uint tos; /* type of service */ int ignoreadvice; /* don't terminate connection on icmp errors */ uchar ipversion; uchar laddr[IPaddrlen]; /* local IP address */ uchar raddr[IPaddrlen]; /* remote IP address */ ushort lport; /* local port number */ ushort rport; /* remote port number */ char *owner; /* 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 */ Queue* sq; /* snooping queue */ Ref snoopers; /* number of processes with snoop open */ QLock car; Rendez cr; char cerr[ERRMAX]; QLock listenq; Rendez listenr; Ipmulti *multi; /* multicast bindings for this interface */ void* ptcl; /* protocol specific stuff */ Route *r; /* last route used */ ulong rgen; /* routetable generation for *r */ }; struct Medium { char *name; int hsize; /* medium header size */ int mintu; /* default min mtu */ int maxtu; /* 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)(Fs *f, 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); void (*leavemulti)(Ipifc *ifc, uchar *a, uchar *ia); /* address resolution */ void (*ares)(Fs*, int, uchar*, uchar*, int, int); /* resolve */ void (*areg)(Ipifc*, uchar*); /* register */ /* v6 address generation */ void (*pref2addr)(uchar *pref, uchar *ea); int unbindonclose; /* if non-zero, unbind on last close */ }; /* logical interface associated with a physical one */ struct Iplifc { uchar local[IPaddrlen]; uchar mask[IPaddrlen]; uchar remote[IPaddrlen]; uchar net[IPaddrlen]; uchar tentative; /* =1 => v6 dup disc on, =0 => confirmed unique */ uchar onlink; /* =1 => onlink, =0 offlink. */ uchar autoflag; /* v6 autonomous flag */ long validlt; /* v6 valid lifetime */ long preflt; /* v6 preferred lifetime */ long origint; /* time when addr was added */ Iplink *link; /* addresses linked to this lifc */ Iplifc *next; }; /* binding twixt Ipself and Iplifc */ struct Iplink { Ipself *self; Iplifc *lifc; Iplink *selflink; /* next link for this local address */ Iplink *lifclink; /* next link for this ifc */ ulong expire; Iplink *next; /* free list */ int ref; }; /* rfc 2461, pp.40—43. */ /* default values, one per stack */ struct Routerparams { int mflag; /* flag: managed address configuration */ int oflag; /* flag: other stateful configuration */ int maxraint; /* max. router adv interval (ms) */ int minraint; /* min. router adv interval (ms) */ int linkmtu; /* mtu options */ int reachtime; /* reachable time */ int rxmitra; /* retransmit interval */ int ttl; /* cur hop count limit */ int routerlt; /* router lifetime */ }; struct Hostparams { int rxmithost; }; struct Ipifc { RWlock; Conv *conv; /* link to its conversation structure */ char dev[64]; /* device we're attached to */ Medium *medium; /* Media pointer */ int maxtu; /* Maximum transfer unit */ int mintu; /* Minumum tranfer unit */ int mbps; /* megabits per second */ void *arg; /* medium specific */ int reassemble; /* reassemble IP packets before forwarding */ /* 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 */ ulong in, out; /* message statistics */ ulong inerr, outerr; /* ... */ uchar sendra6; /* flag: send router advs on this ifc */ uchar recvra6; /* flag: recv router advs on this ifc */ Routerparams rp; /* router parameters as in RFC 2461, pp.40—43. used only if node is router */ }; /* * one per multicast-lifc pair used by a Conv */ struct Ipmulti { uchar ma[IPaddrlen]; uchar ia[IPaddrlen]; Ipmulti *next; }; /* * hash table for 2 ip addresses + 2 ports */ enum { Nipht= 521, /* convenient prime */ IPmatchexact= 0, /* match on 4 tuple */ IPmatchany, /* *!* */ IPmatchport, /* *!port */ IPmatchaddr, /* addr!* */ IPmatchpa, /* addr!port */ }; struct Iphash { Iphash *next; Conv *c; int match; }; struct Ipht { Lock; Iphash *tab[Nipht]; }; void iphtadd(Ipht*, Conv*); void iphtrem(Ipht*, Conv*); Conv* iphtlook(Ipht *ht, uchar *sa, ushort sp, uchar *da, ushort dp); /* * one per multiplexed protocol */ struct Proto { QLock; char* name; /* protocol name */ int x; /* protocol index */ int ipproto; /* ip protocol type */ char* (*connect)(Conv*, char**, int); char* (*announce)(Conv*, char**, int); char* (*bind)(Conv*, char**, int); int (*state)(Conv*, char*, int); void (*create)(Conv*); void (*close)(Conv*); void (*rcv)(Proto*, Ipifc*, Block*); char* (*ctl)(Conv*, char**, int); void (*advise)(Proto*, Block*, char*); int (*stats)(Proto*, char*, int); int (*local)(Conv*, char*, int); int (*remote)(Conv*, char*, int); int (*inuse)(Conv*); int (*gc)(Proto*); /* returns true if any conversations are freed */ Fs *f; /* file system this proto is part of */ 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; void *priv; }; /* * one per IP protocol stack */ struct Fs { RWlock; int dev; int np; Proto* p[Maxproto+1]; /* list of supported protocols */ Proto* t2p[256]; /* vector of all protocols */ Proto* ipifc; /* kludge for ipifcremroute & ipifcaddroute */ Proto* ipmux; /* kludge for finding an ip multiplexor */ IP *ip; Ipselftab *self; Arp *arp; v6params *v6p; Route *v4root[1<<Lroot]; /* v4 routing forest */ Route *v6root[1<<Lroot]; /* v6 routing forest */ Route *queue; /* used as temp when reinjecting routes */ Netlog *alog; char ndb[1024]; /* an ndb entry for this interface */ int ndbvers; long ndbmtime; }; /* one per default router known to host */ struct v6router { uchar inuse; Ipifc *ifc; int ifcid; uchar routeraddr[IPaddrlen]; long ltorigin; Routerparams rp; }; struct v6params { Routerparams rp; /* v6 params, one copy per node now */ Hostparams hp; v6router v6rlist[3]; /* max 3 default routers, currently */ int cdrouter; /* uses only v6rlist[cdrouter] if */ /* cdrouter >= 0. */ }; int Fsconnected(Conv*, char*); Conv* Fsnewcall(Conv*, uchar*, ushort, uchar*, ushort, uchar); int Fspcolstats(char*, int); int Fsproto(Fs*, Proto*); int Fsbuiltinproto(Fs*, uchar); Conv* Fsprotoclone(Proto*, char*); Proto* Fsrcvpcol(Fs*, uchar); Proto* Fsrcvpcolx(Fs*, uchar); char* Fsstdconnect(Conv*, char**, int); char* Fsstdannounce(Conv*, char**, int); char* Fsstdbind(Conv*, char**, int); ulong scalednconv(void); void closeconv(Conv*); /* * logging */ 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, Logtcprxmt= 1<<11, Logigmp= 1<<12, Logudpmsg= 1<<13, Logipmsg= 1<<14, Logrudp= 1<<15, Logrudpmsg= 1<<16, Logesp= 1<<17, Logtcpwin= 1<<18, }; void netloginit(Fs*); void netlogopen(Fs*); void netlogclose(Fs*); void netlogctl(Fs*, char*, int); long netlogread(Fs*, void*, ulong, long); void netlog(Fs*, int, char*, ...); void ifcloginit(Fs*); long ifclogread(Fs*, Chan *,void*, ulong, long); void ifclog(Fs*, uchar *, int); void ifclogopen(Fs*, Chan*); void ifclogclose(Fs*, Chan*); /* * iproute.c */ typedef struct RouteTree RouteTree; typedef struct Routewalk Routewalk; typedef struct V4route V4route; typedef struct V6route V6route; enum { /* 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 */ Rproxy= (1<<6), /* this route should be proxied */ }; struct Routewalk { int o; int h; char* p; char* e; 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]; int ref; }; 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(Fs *f, char *tag, uchar *a, uchar *mask, uchar *gate, int type); extern void v6addroute(Fs *f, char *tag, uchar *a, uchar *mask, uchar *gate, int type); extern void v4delroute(Fs *f, uchar *a, uchar *mask, int dolock); extern void v6delroute(Fs *f, uchar *a, uchar *mask, int dolock); extern Route* v4lookup(Fs *f, uchar *a, Conv *c); extern Route* v6lookup(Fs *f, uchar *a, Conv *c); extern long routeread(Fs *f, char*, ulong, int); extern long routewrite(Fs *f, Chan*, char*, int); extern void routetype(int, char*); extern void ipwalkroutes(Fs*, Routewalk*); extern void convroute(Route*, uchar*, uchar*, uchar*, char*, int*); /* * devip.c */