1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * From: @(#)if_loop.c 8.1 (Berkeley) 6/10/93
| 1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * From: @(#)if_loop.c 8.1 (Berkeley) 6/10/93
|
34 * $Id: if_disc.c,v 1.3 1995/03/20 19:20:39 wollman Exp $
| 34 * $Id: if_disc.c,v 1.4 1995/05/30 08:08:01 rgrimes Exp $
|
35 */
36
37/*
38 * Discard interface driver for protocol testing and timing.
39 * (Based on the loopback.)
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/mbuf.h>
46#include <sys/socket.h>
47#include <sys/errno.h>
48#include <sys/ioctl.h>
49#include <sys/time.h>
50#include <machine/cpu.h>
51
52#include <net/if.h>
53#include <net/if_types.h>
54#include <net/netisr.h>
55#include <net/route.h>
56#include <net/bpf.h>
57
58#ifdef INET
59#include <netinet/in.h>
60#include <netinet/in_systm.h>
61#include <netinet/in_var.h>
62#include <netinet/ip.h>
63#endif
64
65#ifdef NS
66#include <netns/ns.h>
67#include <netns/ns_if.h>
68#endif
69
70#ifdef ISO
71#include <netiso/iso.h>
72#include <netiso/iso_var.h>
73#endif
74
75#include "bpfilter.h"
76
77#ifdef TINY_DSMTU
78#define DSMTU (1024+512)
79#else
80#define DSMTU 65532
81#endif
82
| 35 */
36
37/*
38 * Discard interface driver for protocol testing and timing.
39 * (Based on the loopback.)
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/mbuf.h>
46#include <sys/socket.h>
47#include <sys/errno.h>
48#include <sys/ioctl.h>
49#include <sys/time.h>
50#include <machine/cpu.h>
51
52#include <net/if.h>
53#include <net/if_types.h>
54#include <net/netisr.h>
55#include <net/route.h>
56#include <net/bpf.h>
57
58#ifdef INET
59#include <netinet/in.h>
60#include <netinet/in_systm.h>
61#include <netinet/in_var.h>
62#include <netinet/ip.h>
63#endif
64
65#ifdef NS
66#include <netns/ns.h>
67#include <netns/ns_if.h>
68#endif
69
70#ifdef ISO
71#include <netiso/iso.h>
72#include <netiso/iso_var.h>
73#endif
74
75#include "bpfilter.h"
76
77#ifdef TINY_DSMTU
78#define DSMTU (1024+512)
79#else
80#define DSMTU 65532
81#endif
82
|
| 83static void discattach __P((caddr_t udata));
84PSEUDO_SET(discattach, if_disc);
85
|
83static struct ifnet dsif;
84static int dsoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
85 struct rtentry *);
86static int dsioctl(struct ifnet *, int, caddr_t);
87
88/* ARGSUSED */
89static void
| 86static struct ifnet dsif;
87static int dsoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
88 struct rtentry *);
89static int dsioctl(struct ifnet *, int, caddr_t);
90
91/* ARGSUSED */
92static void
|
90discattach(void)
| 93discattach(udata)
94 caddr_t udata;
|
91{
92 register struct ifnet *ifp = &dsif;
93
94 ifp->if_name = "ds";
95 ifp->if_mtu = DSMTU;
96 ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
97 ifp->if_ioctl = dsioctl;
98 ifp->if_output = dsoutput;
99 ifp->if_type = IFT_LOOP;
100 ifp->if_hdrlen = 0;
101 ifp->if_addrlen = 0;
102 if_attach(ifp);
103#if NBPFILTER > 0
104 bpfattach(&ifp->if_bpf, ifp, DLT_NULL, sizeof(u_int));
105#endif
106}
107
| 95{
96 register struct ifnet *ifp = &dsif;
97
98 ifp->if_name = "ds";
99 ifp->if_mtu = DSMTU;
100 ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
101 ifp->if_ioctl = dsioctl;
102 ifp->if_output = dsoutput;
103 ifp->if_type = IFT_LOOP;
104 ifp->if_hdrlen = 0;
105 ifp->if_addrlen = 0;
106 if_attach(ifp);
107#if NBPFILTER > 0
108 bpfattach(&ifp->if_bpf, ifp, DLT_NULL, sizeof(u_int));
109#endif
110}
111
|
108PSEUDO_SET(discattach, if_disc);
109
| |
110static int
111dsoutput(ifp, m, dst, rt)
112 struct ifnet *ifp;
113 register struct mbuf *m;
114 struct sockaddr *dst;
115 register struct rtentry *rt;
116{
117 int s, isr;
118 register struct ifqueue *ifq = 0;
119
120 if ((m->m_flags & M_PKTHDR) == 0)
121 panic("dsoutput no HDR");
122 ifp->if_lastchange = time;
123#if NBPFILTER > 0
124 if (dsif.if_bpf) {
125 /*
126 * We need to prepend the address family as
127 * a four byte field. Cons up a dummy header
128 * to pacify bpf. This is safe because bpf
129 * will only read from the mbuf (i.e., it won't
130 * try to free it or keep a pointer a to it).
131 */
132 struct mbuf m0;
133 u_int af = dst->sa_family;
134
135 m0.m_next = m;
136 m0.m_len = 4;
137 m0.m_data = (char *)⁡
138
139 bpf_mtap(dsif.if_bpf, &m0);
140 }
141#endif
142 m->m_pkthdr.rcvif = ifp;
143
144 if (rt && rt->rt_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
145 m_freem(m);
146 return (rt->rt_flags & RTF_BLACKHOLE ? 0 :
147 rt->rt_flags & RTF_HOST ? EHOSTUNREACH : ENETUNREACH);
148 }
149 ifp->if_opackets++;
150 ifp->if_obytes += m->m_pkthdr.len;
151
152 m_freem(m);
153 return 0;
154}
155
156/* ARGSUSED */
157static void
158dsrtrequest(cmd, rt, sa)
159 int cmd;
160 struct rtentry *rt;
161 struct sockaddr *sa;
162{
163 if (rt)
164 rt->rt_rmx.rmx_mtu = DSMTU;
165}
166
167/*
168 * Process an ioctl request.
169 */
170/* ARGSUSED */
171int
172dsioctl(ifp, cmd, data)
173 register struct ifnet *ifp;
174 int cmd;
175 caddr_t data;
176{
177 register struct ifaddr *ifa;
178 register struct ifreq *ifr = (struct ifreq *)data;
179 register int error = 0;
180
181 switch (cmd) {
182
183 case SIOCSIFADDR:
184 ifp->if_flags |= IFF_UP;
185 ifa = (struct ifaddr *)data;
186 if (ifa != 0)
187 ifa->ifa_rtrequest = dsrtrequest;
188 /*
189 * Everything else is done at a higher level.
190 */
191 break;
192
193 case SIOCADDMULTI:
194 case SIOCDELMULTI:
195 if (ifr == 0) {
196 error = EAFNOSUPPORT; /* XXX */
197 break;
198 }
199 switch (ifr->ifr_addr.sa_family) {
200
201#ifdef INET
202 case AF_INET:
203 break;
204#endif
205
206 default:
207 error = EAFNOSUPPORT;
208 break;
209 }
210 break;
211
212 case SIOCSIFMTU:
213 ifp->if_mtu = ifr->ifr_mtu;
214 break;
215
216 default:
217 error = EINVAL;
218 }
219 return (error);
220}
| 112static int
113dsoutput(ifp, m, dst, rt)
114 struct ifnet *ifp;
115 register struct mbuf *m;
116 struct sockaddr *dst;
117 register struct rtentry *rt;
118{
119 int s, isr;
120 register struct ifqueue *ifq = 0;
121
122 if ((m->m_flags & M_PKTHDR) == 0)
123 panic("dsoutput no HDR");
124 ifp->if_lastchange = time;
125#if NBPFILTER > 0
126 if (dsif.if_bpf) {
127 /*
128 * We need to prepend the address family as
129 * a four byte field. Cons up a dummy header
130 * to pacify bpf. This is safe because bpf
131 * will only read from the mbuf (i.e., it won't
132 * try to free it or keep a pointer a to it).
133 */
134 struct mbuf m0;
135 u_int af = dst->sa_family;
136
137 m0.m_next = m;
138 m0.m_len = 4;
139 m0.m_data = (char *)⁡
140
141 bpf_mtap(dsif.if_bpf, &m0);
142 }
143#endif
144 m->m_pkthdr.rcvif = ifp;
145
146 if (rt && rt->rt_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
147 m_freem(m);
148 return (rt->rt_flags & RTF_BLACKHOLE ? 0 :
149 rt->rt_flags & RTF_HOST ? EHOSTUNREACH : ENETUNREACH);
150 }
151 ifp->if_opackets++;
152 ifp->if_obytes += m->m_pkthdr.len;
153
154 m_freem(m);
155 return 0;
156}
157
158/* ARGSUSED */
159static void
160dsrtrequest(cmd, rt, sa)
161 int cmd;
162 struct rtentry *rt;
163 struct sockaddr *sa;
164{
165 if (rt)
166 rt->rt_rmx.rmx_mtu = DSMTU;
167}
168
169/*
170 * Process an ioctl request.
171 */
172/* ARGSUSED */
173int
174dsioctl(ifp, cmd, data)
175 register struct ifnet *ifp;
176 int cmd;
177 caddr_t data;
178{
179 register struct ifaddr *ifa;
180 register struct ifreq *ifr = (struct ifreq *)data;
181 register int error = 0;
182
183 switch (cmd) {
184
185 case SIOCSIFADDR:
186 ifp->if_flags |= IFF_UP;
187 ifa = (struct ifaddr *)data;
188 if (ifa != 0)
189 ifa->ifa_rtrequest = dsrtrequest;
190 /*
191 * Everything else is done at a higher level.
192 */
193 break;
194
195 case SIOCADDMULTI:
196 case SIOCDELMULTI:
197 if (ifr == 0) {
198 error = EAFNOSUPPORT; /* XXX */
199 break;
200 }
201 switch (ifr->ifr_addr.sa_family) {
202
203#ifdef INET
204 case AF_INET:
205 break;
206#endif
207
208 default:
209 error = EAFNOSUPPORT;
210 break;
211 }
212 break;
213
214 case SIOCSIFMTU:
215 ifp->if_mtu = ifr->ifr_mtu;
216 break;
217
218 default:
219 error = EINVAL;
220 }
221 return (error);
222}
|