Annotation of sys/net/raw_cb.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: raw_cb.c,v 1.5 2003/12/10 07:22:42 itojun Exp $ */
! 2: /* $NetBSD: raw_cb.c,v 1.9 1996/02/13 22:00:39 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1980, 1986, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
! 33: */
! 34:
! 35: #include <sys/param.h>
! 36: #include <sys/systm.h>
! 37: #include <sys/mbuf.h>
! 38: #include <sys/socket.h>
! 39: #include <sys/socketvar.h>
! 40: #include <sys/domain.h>
! 41: #include <sys/protosw.h>
! 42: #include <sys/errno.h>
! 43:
! 44: #include <net/if.h>
! 45: #include <net/route.h>
! 46: #include <net/raw_cb.h>
! 47: #include <netinet/in.h>
! 48:
! 49: /*
! 50: * Routines to manage the raw protocol control blocks.
! 51: *
! 52: * TODO:
! 53: * hash lookups by protocol family/protocol + address family
! 54: * take care of unique address problems per AF?
! 55: * redo address binding to allow wildcards
! 56: */
! 57:
! 58: u_long raw_sendspace = RAWSNDQ;
! 59: u_long raw_recvspace = RAWRCVQ;
! 60: struct rawcbhead rawcb;
! 61:
! 62: /*
! 63: * Allocate a control block and a nominal amount
! 64: * of buffer space for the socket.
! 65: */
! 66: int
! 67: raw_attach(so, proto)
! 68: struct socket *so;
! 69: int proto;
! 70: {
! 71: struct rawcb *rp = sotorawcb(so);
! 72: int error;
! 73:
! 74: /*
! 75: * It is assumed that raw_attach is called
! 76: * after space has been allocated for the
! 77: * rawcb.
! 78: */
! 79: if (rp == 0)
! 80: return (ENOBUFS);
! 81: if ((error = soreserve(so, raw_sendspace, raw_recvspace)) != 0)
! 82: return (error);
! 83: rp->rcb_socket = so;
! 84: rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
! 85: rp->rcb_proto.sp_protocol = proto;
! 86: LIST_INSERT_HEAD(&rawcb, rp, rcb_list);
! 87: return (0);
! 88: }
! 89:
! 90: /*
! 91: * Detach the raw connection block and discard
! 92: * socket resources.
! 93: */
! 94: void
! 95: raw_detach(rp)
! 96: struct rawcb *rp;
! 97: {
! 98: struct socket *so = rp->rcb_socket;
! 99:
! 100: so->so_pcb = 0;
! 101: sofree(so);
! 102: LIST_REMOVE(rp, rcb_list);
! 103: #ifdef notdef
! 104: if (rp->rcb_laddr)
! 105: m_freem(dtom(rp->rcb_laddr));
! 106: rp->rcb_laddr = 0;
! 107: #endif
! 108: free((caddr_t)(rp), M_PCB);
! 109: }
! 110:
! 111: /*
! 112: * Disconnect and possibly release resources.
! 113: */
! 114: void
! 115: raw_disconnect(rp)
! 116: struct rawcb *rp;
! 117: {
! 118:
! 119: #ifdef notdef
! 120: if (rp->rcb_faddr)
! 121: m_freem(dtom(rp->rcb_faddr));
! 122: rp->rcb_faddr = 0;
! 123: #endif
! 124: if (rp->rcb_socket->so_state & SS_NOFDREF)
! 125: raw_detach(rp);
! 126: }
! 127:
! 128: #ifdef notdef
! 129: int
! 130: raw_bind(so, nam)
! 131: struct socket *so;
! 132: struct mbuf *nam;
! 133: {
! 134: struct sockaddr *addr = mtod(nam, struct sockaddr *);
! 135: struct rawcb *rp;
! 136:
! 137: if (ifnet == 0)
! 138: return (EADDRNOTAVAIL);
! 139: rp = sotorawcb(so);
! 140: nam = m_copym(nam, 0, M_COPYALL, M_WAITOK);
! 141: rp->rcb_laddr = mtod(nam, struct sockaddr *);
! 142: return (0);
! 143: }
! 144: #endif
CVSweb