475 lines
11 KiB
C
475 lines
11 KiB
C
/* $KAME: dccp6_usrreq.c,v 1.13 2005/07/27 08:42:56 nishida Exp $ */
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/* $NetBSD: dccp6_usrreq.c,v 1.12 2018/09/15 13:33:15 rjs Exp $ */
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/*
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* Copyright (C) 2003 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dccp6_usrreq.c,v 1.12 2018/09/15 13:33:15 rjs Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_inet.h"
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#include "opt_dccp.h"
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#include "opt_net_mpsafe.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/domain.h>
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#include <sys/kernel.h>
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#include <sys/pool.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/signalvar.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/in_var.h>
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#include <netinet/ip6.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp_var.h>
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#include <netinet/ip_var.h>
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#include <netinet6/in6_pcb.h>
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#include <netinet6/ip6_var.h>
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#include <netinet/dccp.h>
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#include <netinet/dccp_var.h>
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#include <netinet6/dccp6_var.h>
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#include <netinet/dccp_cc_sw.h>
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#if !defined(__FreeBSD__) || __FreeBSD_version < 500000
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#define INP_INFO_LOCK_INIT(x,y)
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#define INP_INFO_WLOCK(x)
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#define INP_INFO_WUNLOCK(x)
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#define INP_INFO_RLOCK(x)
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#define INP_INFO_RUNLOCK(x)
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#define INP_LOCK(x)
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#define INP_UNLOCK(x)
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#endif
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#define PULLDOWN_TEST
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int
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dccp6_input(struct mbuf **mp, int *offp, int proto)
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{
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struct mbuf *m = *mp;
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DCCP_DEBUG((LOG_INFO, "In dccp6_input!\n"));
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#ifndef PULLDOWN_TEST
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IP6_EXTHDR_CHECK(m, *offp, sizeof(struct dccphdr), IPPROTO_DONE);
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#endif
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dccp_input(m, *offp, proto);
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return IPPROTO_DONE;
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}
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void *
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dccp6_ctlinput(int cmd, const struct sockaddr *sa, void *d)
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{
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if (sa->sa_family != AF_INET6 ||
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sa->sa_len != sizeof(struct sockaddr_in6))
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return NULL;
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/* FIX LATER */
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return NULL;
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}
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int
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dccp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *td)
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{
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struct in6pcb *in6p;
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int error;
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struct sockaddr_in6 *sin6p = (struct sockaddr_in6 *)nam;
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DCCP_DEBUG((LOG_INFO, "Entering dccp6_bind!\n"));
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INP_INFO_WLOCK(&dccpbinfo);
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in6p = sotoin6pcb(so);
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if (in6p == 0) {
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INP_INFO_WUNLOCK(&dccpbinfo);
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DCCP_DEBUG((LOG_INFO, "dccp6_bind: in6p == 0!\n"));
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return EINVAL;
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}
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/* Do not bind to multicast addresses! */
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if (sin6p->sin6_family == AF_INET6 &&
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IN6_IS_ADDR_MULTICAST(&sin6p->sin6_addr)) {
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INP_INFO_WUNLOCK(&dccpbinfo);
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return EAFNOSUPPORT;
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}
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INP_LOCK(inp);
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in6todccpcb(in6p)->inp_vflag &= ~INP_IPV4;
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in6todccpcb(in6p)->inp_vflag |= INP_IPV6;
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error = in6_pcbbind(in6p, sin6p, td);
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INP_UNLOCK(inp);
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INP_INFO_WUNLOCK(&dccpbinfo);
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return error;
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}
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int
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dccp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
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{
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struct in6pcb *in6p;
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struct dccpcb *dp;
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int error;
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struct sockaddr_in6 *sin6;
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char test[2];
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DCCP_DEBUG((LOG_INFO, "Entering dccp6_connect!\n"));
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#ifndef __NetBSD__
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INP_INFO_WLOCK(&dccpbinfo);
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inp = sotoinpcb(so);
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if (inp == 0) {
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INP_INFO_WUNLOCK(&dccpbinfo);
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return EINVAL;
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}
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INP_LOCK(inp);
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if (inp->inp_faddr.s_addr != INADDR_ANY) {
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INP_UNLOCK(inp);
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INP_INFO_WUNLOCK(&dccpbinfo);
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return EISCONN;
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}
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dp = (struct dccpcb *)inp->inp_ppcb;
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#else
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in6p = sotoin6pcb(so);
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if (in6p == 0) {
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return EINVAL;
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}
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if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
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return EISCONN;
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}
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dp = (struct dccpcb *)in6p->in6p_ppcb;
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#endif
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if (dp->state == DCCPS_ESTAB) {
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DCCP_DEBUG((LOG_INFO, "Why are we in connect when we already have a established connection?\n"));
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}
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dp->who = DCCP_CLIENT;
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dp->seq_snd = (((u_int64_t)random() << 32) | random()) % 281474976710656LL;
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sin6 = (struct sockaddr_in6 *)nam;
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if (sin6->sin6_family == AF_INET6
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&& IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
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error = EAFNOSUPPORT;
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goto bad;
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}
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dp->inp_vflag &= ~INP_IPV4;
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dp->inp_vflag |= INP_IPV6;
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error = dccp_doconnect(so, nam, l, 1);
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if (error != 0)
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goto bad;
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callout_reset(&dp->retrans_timer, dp->retrans, dccp_retrans_t, dp);
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callout_reset(&dp->connect_timer, DCCP_CONNECT_TIMER, dccp_connect_t, dp);
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test[0] = dp->pref_cc;
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#if 0
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/* FIX THIS LATER */
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if (dp->pref_cc == 2) {
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test[1] = 3;
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} else {
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test[1] = 2;
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}
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dccp_add_feature(dp, DCCP_OPT_CHANGE, DCCP_FEATURE_CC, test, 2);
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dccp_add_feature(dp, DCCP_OPT_PREFER, DCCP_FEATURE_CC, test, 2);
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#else
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/* we only support CCID2 at this moment */
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dccp_add_feature(dp, DCCP_OPT_CHANGE_R, DCCP_FEATURE_CC, test, 1);
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#endif
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error = dccp_output(dp, 0);
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bad:
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INP_UNLOCK(inp);
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INP_INFO_WUNLOCK(&dccpbinfo);
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return error;
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}
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int
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dccp6_listen(struct socket *so, struct lwp *l)
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{
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struct in6pcb *in6p;
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struct dccpcb *dp;
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int error = 0;
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DCCP_DEBUG((LOG_INFO, "Entering dccp6_listen!\n"));
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INP_INFO_RLOCK(&dccpbinfo);
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in6p = sotoin6pcb(so);
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if (in6p == 0) {
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INP_INFO_RUNLOCK(&dccpbinfo);
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return EINVAL;
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}
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INP_LOCK(inp);
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INP_INFO_RUNLOCK(&dccpbinfo);
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dp = in6todccpcb(in6p);
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DCCP_DEBUG((LOG_INFO, "Checking in6p->in6p_lport!\n"));
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if (in6p->in6p_lport == 0) {
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error = in6_pcbbind(in6p, NULL, l);
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}
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if (error == 0) {
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dp->state = DCCPS_LISTEN;
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dp->who = DCCP_LISTENER;
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dp->seq_snd = 512;
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}
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INP_UNLOCK(inp);
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return error;
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}
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int
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dccp6_accept(struct socket *so, struct sockaddr *nam)
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{
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struct in6pcb *in6p = NULL;
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int error = 0;
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DCCP_DEBUG((LOG_INFO, "Entering dccp6_accept!\n"));
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if (nam == NULL) {
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return EINVAL;
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}
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if (so->so_state & SS_ISDISCONNECTED) {
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DCCP_DEBUG((LOG_INFO, "so_state && SS_ISDISCONNECTED!, so->state = %i\n", so->so_state));
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return ECONNABORTED;
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}
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INP_INFO_RLOCK(&dccpbinfo);
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in6p = sotoin6pcb(so);
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if (in6p == 0) {
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INP_INFO_RUNLOCK(&dccpbinfo);
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return EINVAL;
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}
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INP_LOCK(inp);
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INP_INFO_RUNLOCK(&dccpbinfo);
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in6_setpeeraddr(in6p, (struct sockaddr_in6 *)nam);
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INP_UNLOCK(inp);
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return error;
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}
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static int
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dccp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
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{
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int error = 0;
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int family;
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family = so->so_proto->pr_domain->dom_family;
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switch (family) {
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case PF_INET6:
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error = in6_control(so, cmd, nam, ifp);
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break;
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default:
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error = EAFNOSUPPORT;
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}
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return (error);
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}
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static int
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dccp6_stat(struct socket *so, struct stat *ub)
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{
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return 0;
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}
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static int
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dccp6_purgeif(struct socket *so, struct ifnet *ifp)
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{
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int s;
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s = splsoftnet();
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mutex_enter(softnet_lock);
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in6_pcbpurgeif0(&dccpbtable, ifp);
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#ifdef NET_MPSAFE
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mutex_exit(softnet_lock);
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#endif
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in6_purgeif(ifp);
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#ifdef NET_MPSAFE
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mutex_enter(softnet_lock);
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#endif
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in6_pcbpurgeif(&dccpbtable, ifp);
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mutex_exit(softnet_lock);
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splx(s);
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return 0;
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}
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static int
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dccp6_attach(struct socket *so, int proto)
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{
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return dccp_attach(so, proto);
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}
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static int
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dccp6_detach(struct socket *so)
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{
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return dccp_detach(so);
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}
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static int
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dccp6_connect2(struct socket *so, struct socket *so2)
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{
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KASSERT(solocked(so));
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return EOPNOTSUPP;
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}
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static int
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dccp6_disconnect(struct socket *so)
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{
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return dccp_disconnect(so);
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}
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static int
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dccp6_shutdown(struct socket *so)
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{
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return dccp_shutdown(so);
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}
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static int
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dccp6_abort(struct socket *so)
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{
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return dccp_abort(so);
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}
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static int
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dccp6_peeraddr(struct socket *so, struct sockaddr *nam)
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{
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KASSERT(solocked(so));
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KASSERT(sotoinpcb(so) != NULL);
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KASSERT(nam != NULL);
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in6_setpeeraddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam);
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return 0;
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}
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static int
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dccp6_sockaddr(struct socket *so, struct sockaddr *nam)
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{
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KASSERT(solocked(so));
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KASSERT(sotoinpcb(so) != NULL);
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KASSERT(nam != NULL);
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in6_setsockaddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam);
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return 0;
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}
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static int
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dccp6_recvoob(struct socket *so, struct mbuf *m, int flags)
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{
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KASSERT(solocked(so));
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return EOPNOTSUPP;
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}
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static int
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dccp6_rcvd(struct socket *so, int flags, struct lwp *l)
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{
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KASSERT(solocked(so));
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return EOPNOTSUPP;
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}
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static int
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dccp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
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struct mbuf *control, struct lwp *l)
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{
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return dccp_send(so, m, nam, control, l);
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}
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static int
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dccp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
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{
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KASSERT(solocked(so));
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m_freem(m);
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m_freem(control);
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return EOPNOTSUPP;
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}
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PR_WRAP_USRREQS(dccp6)
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#define dccp6_attach dccp6_attach_wrapper
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#define dccp6_detach dccp6_detach_wrapper
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#define dccp6_accept dccp6_accept_wrapper
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#define dccp6_bind dccp6_bind_wrapper
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#define dccp6_listen dccp6_listen_wrapper
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#define dccp6_connect dccp6_connect_wrapper
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#define dccp6_connect2 dccp6_connect2_wrapper
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#define dccp6_disconnect dccp6_disconnect_wrapper
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#define dccp6_shutdown dccp6_shutdown_wrapper
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#define dccp6_abort dccp6_abort_wrapper
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#define dccp6_ioctl dccp6_ioctl_wrapper
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#define dccp6_stat dccp6_stat_wrapper
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#define dccp6_peeraddr dccp6_peeraddr_wrapper
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#define dccp6_sockaddr dccp6_sockaddr_wrapper
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#define dccp6_rcvd dccp6_rcvd_wrapper
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#define dccp6_recvoob dccp6_recvoob_wrapper
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#define dccp6_send dccp6_send_wrapper
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#define dccp6_sendoob dccp6_sendoob_wrapper
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#define dccp6_purgeif dccp6_purgeif_wrapper
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const struct pr_usrreqs dccp6_usrreqs = {
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.pr_attach = dccp6_attach,
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.pr_detach = dccp6_detach,
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.pr_accept = dccp6_accept,
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.pr_bind = dccp6_bind,
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.pr_listen = dccp6_listen,
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.pr_connect = dccp6_connect,
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.pr_connect2 = dccp6_connect2,
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.pr_disconnect = dccp6_disconnect,
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.pr_shutdown = dccp6_shutdown,
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.pr_abort = dccp6_abort,
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.pr_ioctl = dccp6_ioctl,
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.pr_stat = dccp6_stat,
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.pr_peeraddr = dccp6_peeraddr,
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.pr_sockaddr = dccp6_sockaddr,
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.pr_rcvd = dccp6_rcvd,
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.pr_recvoob = dccp6_recvoob,
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.pr_send = dccp6_send,
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.pr_sendoob = dccp6_sendoob,
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.pr_purgeif = dccp6_purgeif,
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};
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