raw_cb.c revision 29024
165865Siwasaki/* 265865Siwasaki * Copyright (c) 1980, 1986, 1993 365865Siwasaki * The Regents of the University of California. All rights reserved. 465865Siwasaki * 565865Siwasaki * Redistribution and use in source and binary forms, with or without 665865Siwasaki * modification, are permitted provided that the following conditions 765865Siwasaki * are met: 865865Siwasaki * 1. Redistributions of source code must retain the above copyright 965865Siwasaki * notice, this list of conditions and the following disclaimer. 1065865Siwasaki * 2. Redistributions in binary form must reproduce the above copyright 1165865Siwasaki * notice, this list of conditions and the following disclaimer in the 1265865Siwasaki * documentation and/or other materials provided with the distribution. 1365865Siwasaki * 3. All advertising materials mentioning features or use of this software 1465865Siwasaki * must display the following acknowledgement: 1565865Siwasaki * This product includes software developed by the University of 1665865Siwasaki * California, Berkeley and its contributors. 1765865Siwasaki * 4. Neither the name of the University nor the names of its contributors 1865865Siwasaki * may be used to endorse or promote products derived from this software 1965865Siwasaki * without specific prior written permission. 2065865Siwasaki * 2165865Siwasaki * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2265865Siwasaki * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2365865Siwasaki * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2465865Siwasaki * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2565865Siwasaki * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2665865Siwasaki * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2765865Siwasaki * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2865865Siwasaki * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2965865Siwasaki * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3065865Siwasaki * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3165865Siwasaki * SUCH DAMAGE. 3265865Siwasaki * 3365865Siwasaki * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 3465865Siwasaki * $Id: raw_cb.c,v 1.12 1997/04/27 20:00:58 wollman Exp $ 3565865Siwasaki */ 3665865Siwasaki 3765865Siwasaki#include <sys/param.h> 3865865Siwasaki#include <sys/queue.h> 3965865Siwasaki#include <sys/systm.h> 4065865Siwasaki#include <sys/malloc.h> 4165865Siwasaki#include <sys/mbuf.h> 4265865Siwasaki#include <sys/socket.h> 4365865Siwasaki#include <sys/socketvar.h> 4465865Siwasaki#include <sys/domain.h> 4565865Siwasaki#include <sys/protosw.h> 4665865Siwasaki#include <sys/errno.h> 4765865Siwasaki 4865865Siwasaki#include <net/if.h> 4965865Siwasaki#include <net/route.h> 5065865Siwasaki#include <net/raw_cb.h> 5165865Siwasaki#include <netinet/in.h> 5265865Siwasaki 5365865Siwasaki/* 5465865Siwasaki * Routines to manage the raw protocol control blocks. 5565865Siwasaki * 5665865Siwasaki * TODO: 5765865Siwasaki * hash lookups by protocol family/protocol + address family 5865865Siwasaki * take care of unique address problems per AF? 5965865Siwasaki * redo address binding to allow wildcards 6065865Siwasaki */ 6165865Siwasaki 6265865Siwasakistruct rawcb_list_head rawcb_list; 6365865Siwasaki 6465865Siwasakistatic u_long raw_sendspace = RAWSNDQ; 6565865Siwasakistatic u_long raw_recvspace = RAWRCVQ; 6665865Siwasaki 6765865Siwasaki/* 6865865Siwasaki * Allocate a control block and a nominal amount 6965865Siwasaki * of buffer space for the socket. 7065865Siwasaki */ 7165865Siwasakiint 7265865Siwasakiraw_attach(so, proto) 7365865Siwasaki register struct socket *so; 7465865Siwasaki int proto; 7565865Siwasaki{ 7665865Siwasaki register struct rawcb *rp = sotorawcb(so); 7765865Siwasaki int error; 7865865Siwasaki 7965865Siwasaki /* 8065865Siwasaki * It is assumed that raw_attach is called 8165865Siwasaki * after space has been allocated for the 8265865Siwasaki * rawcb. 8365865Siwasaki */ 8465865Siwasaki if (rp == 0) 8565865Siwasaki return (ENOBUFS); 8665865Siwasaki error = soreserve(so, raw_sendspace, raw_recvspace); 8765865Siwasaki if (error) 8865865Siwasaki return (error); 8965865Siwasaki rp->rcb_socket = so; 9065865Siwasaki rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 9165865Siwasaki rp->rcb_proto.sp_protocol = proto; 9265865Siwasaki LIST_INSERT_HEAD(&rawcb_list, rp, list); 9365865Siwasaki return (0); 9465865Siwasaki} 9565865Siwasaki 9665865Siwasaki/* 9765865Siwasaki * Detach the raw connection block and discard 9865865Siwasaki * socket resources. 9965865Siwasaki */ 10065865Siwasakivoid 10165865Siwasakiraw_detach(rp) 10265865Siwasaki register struct rawcb *rp; 10365865Siwasaki{ 10465865Siwasaki struct socket *so = rp->rcb_socket; 10565865Siwasaki 10665865Siwasaki so->so_pcb = 0; 10765865Siwasaki sofree(so); 10865865Siwasaki LIST_REMOVE(rp, list); 10965865Siwasaki#ifdef notdef 11065865Siwasaki if (rp->rcb_laddr) 11165865Siwasaki m_freem(dtom(rp->rcb_laddr)); 11265865Siwasaki rp->rcb_laddr = 0; 11365865Siwasaki#endif 11465865Siwasaki free((caddr_t)(rp), M_PCB); 11565865Siwasaki} 11665865Siwasaki 11765865Siwasaki/* 11865865Siwasaki * Disconnect and possibly release resources. 11965865Siwasaki */ 12065865Siwasakivoid 12165865Siwasakiraw_disconnect(rp) 12265865Siwasaki struct rawcb *rp; 12365865Siwasaki{ 12465865Siwasaki 12565865Siwasaki#ifdef notdef 12665865Siwasaki if (rp->rcb_faddr) 12765865Siwasaki m_freem(dtom(rp->rcb_faddr)); 12865865Siwasaki rp->rcb_faddr = 0; 12965865Siwasaki#endif 13065865Siwasaki if (rp->rcb_socket->so_state & SS_NOFDREF) 13165865Siwasaki raw_detach(rp); 13265865Siwasaki} 13365865Siwasaki 13465865Siwasaki#ifdef notdef 13565865Siwasakiint 13665865Siwasakiraw_bind(so, nam) 13765865Siwasaki register struct socket *so; 13865865Siwasaki struct mbuf *nam; 13965865Siwasaki{ 140 struct sockaddr *addr = mtod(nam, struct sockaddr *); 141 register struct rawcb *rp; 142 143 if (ifnet == 0) 144 return (EADDRNOTAVAIL); 145 rp = sotorawcb(so); 146 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 147 rp->rcb_laddr = mtod(nam, struct sockaddr *); 148 return (0); 149} 150#endif 151