157 lines
6.5 KiB
C
157 lines
6.5 KiB
C
/* protosw.h */
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#ifndef _SYS_PROTOSW_H
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#define _SYS_PROTOSW_H
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#include <sys/socketvar.h> /* for struct socket */
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#include <net/route.h>
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#define PRCO_SETOPT 0
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#define PRCO_GETOPT 1
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/* every protocol module init's one of these and passes it into
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* the add_protocol() function, defined below */
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/* NB The pr_domain pointer will be filled in during the
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* add_protocol() call
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*/
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struct protosw {
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char *name;
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char *mod_path;
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uint16 pr_type; /* SOCK_xxx */
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struct domain *pr_domain;
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uint16 pr_protocol; /* protocol number */
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uint16 pr_flags; /* flags, PR_xxx */
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int layer; /* which layer are we? */
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/* the functions! */
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void (*pr_init)(void);
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void (*pr_input)(struct mbuf*, int);
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int (*pr_output)(struct mbuf *, struct mbuf *,
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struct route *,
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int, void *);
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int (*pr_userreq)(struct socket *, int,
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struct mbuf *,
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struct mbuf *,
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struct mbuf *);
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int (*pr_sysctl)(int *, uint, void *, size_t *, void *, size_t);
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void (*pr_ctlinput)(int, struct sockaddr *, void *);
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int (*pr_ctloutput)(int, struct socket*, int, int, struct mbuf **);
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struct protosw *pr_next; /* pointer to next proto structure */
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struct protosw *dom_next; /* next protosw pointed by the domain */
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};
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/*
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* Values for pr_flags.
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* PR_ADDR requires PR_ATOMIC;
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* PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
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*/
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#define PR_ATOMIC 0x01 /* exchange atomic messages only */
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#define PR_ADDR 0x02 /* addresses given with messages */
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#define PR_CONNREQUIRED 0x04 /* connection required by protocol */
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#define PR_WANTRCVD 0x08 /* want PRU_RCVD calls */
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#define PR_RIGHTS 0x10 /* passes capabilities */
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#define PR_ABRTACPTDIS 0x20 /* abort on accept(2) to disconnected
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socket */
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#define PR_SLOWHZ 2 /* 2 timeouts per second... */
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#define PR_FASTHZ 5 /* 5 timeouts per second */
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/*
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* Defines for the userreq function req field are below.
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*
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* (*usrreq)(up, req, m, nam, opt);
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*
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* up is a (struct socket *)
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* req is one of these requests,
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* m is a optional mbuf chain containing a message,
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* nam is an optional mbuf chain containing an address,
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* opt is a pointer to a socketopt structure or nil.
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*
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* The protocol is responsible for disposal of the mbuf chain m,
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* the caller is responsible for any space held by nam and opt.
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* A non-zero return from usrreq gives an
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* UNIX error number which should be passed to higher level software.
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*/
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#define PRU_ATTACH 0 /* attach protocol to up */
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#define PRU_DETACH 1 /* detach protocol from up */
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#define PRU_BIND 2 /* bind socket to address */
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#define PRU_LISTEN 3 /* listen for connection */
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#define PRU_CONNECT 4 /* establish connection to peer */
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#define PRU_ACCEPT 5 /* accept connection from peer */
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#define PRU_DISCONNECT 6 /* disconnect from peer */
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#define PRU_SHUTDOWN 7 /* won't send any more data */
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#define PRU_RCVD 8 /* have taken data; more room now */
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#define PRU_SEND 9 /* send this data */
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#define PRU_ABORT 10 /* abort (fast DISCONNECT, DETATCH) */
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#define PRU_CONTROL 11 /* control operations on protocol */
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#define PRU_SENSE 12 /* return status into m */
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#define PRU_RCVOOB 13 /* retrieve out of band data */
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#define PRU_SENDOOB 14 /* send out of band data */
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#define PRU_SOCKADDR 15 /* fetch socket's address */
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#define PRU_PEERADDR 16 /* fetch peer's address */
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#define PRU_CONNECT2 17 /* connect two sockets */
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/* begin for protocols internal use */
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#define PRU_FASTTIMO 18 /* 200ms timeout */
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#define PRU_SLOWTIMO 19 /* 500ms timeout */
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#define PRU_PROTORCV 20 /* receive from below */
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#define PRU_PROTOSEND 21 /* send to below */
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#define PRU_PEEREID 22 /* get local peer eid */
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#define PRU_NREQ 22
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/*
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* The arguments to the ctlinput routine are
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* (*protosw[].pr_ctlinput)(cmd, sa, arg);
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* where cmd is one of the commands below, sa is a pointer to a sockaddr,
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* and arg is an optional caddr_t argument used within a protocol family.
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*/
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#define PRC_IFDOWN 0 /* interface transition */
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#define PRC_ROUTEDEAD 1 /* select new route if possible ??? */
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#define PRC_MTUINC 2 /* increase in mtu to host */
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#define PRC_QUENCH2 3 /* DEC congestion bit says slow down */
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#define PRC_QUENCH 4 /* some one said to slow down */
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#define PRC_MSGSIZE 5 /* message size forced drop */
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#define PRC_HOSTDEAD 6 /* host appears to be down */
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#define PRC_HOSTUNREACH 7 /* deprecated (use PRC_UNREACH_HOST) */
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#define PRC_UNREACH_NET 8 /* no route to network */
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#define PRC_UNREACH_HOST 9 /* no route to host */
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#define PRC_UNREACH_PROTOCOL 10 /* dst says bad protocol */
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#define PRC_UNREACH_PORT 11 /* bad port # */
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/* was PRC_UNREACH_NEEDFRAG 12 (use PRC_MSGSIZE) */
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#define PRC_UNREACH_SRCFAIL 13 /* source route failed */
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#define PRC_REDIRECT_NET 14 /* net routing redirect */
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#define PRC_REDIRECT_HOST 15 /* host routing redirect */
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#define PRC_REDIRECT_TOSNET 16 /* redirect for type of service & net */
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#define PRC_REDIRECT_TOSHOST 17 /* redirect for tos & host */
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#define PRC_TIMXCEED_INTRANS 18 /* packet lifetime expired in transit */
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#define PRC_TIMXCEED_REASS 19 /* lifetime expired on reass q */
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#define PRC_PARAMPROB 20 /* header incorrect */
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#define PRC_NCMDS 21
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#define PRC_IS_REDIRECT(cmd) \
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((cmd) >= PRC_REDIRECT_NET && (cmd) <= PRC_REDIRECT_TOSHOST)
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/* Network stack defines... */
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// struct protosw *protocols;
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enum {
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NET_LAYER1 = 1,
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NET_LAYER2,
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NET_LAYER3,
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NET_LAYER4
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};
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//XXX conflicts with src/add-ons/kernel/network/core/core.c:69
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// void add_protosw (struct protosw *prt[], int);
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void add_protocol (struct protosw *, int);
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void remove_protocol (struct protosw *);
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struct protosw *pffindproto(int domain, int protocol, int type);
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struct protosw *pffindtype(int domain, int type);
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#endif /* _SYS_PROTOSW_H */
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