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if_loop.c (241394) if_loop.c (241610)
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

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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)if_loop.c 8.2 (Berkeley) 1/9/95
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

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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)if_loop.c 8.2 (Berkeley) 1/9/95
30 * $FreeBSD: head/sys/net/if_loop.c 241394 2012-10-10 08:36:38Z kevlo $
30 * $FreeBSD: head/sys/net/if_loop.c 241610 2012-10-16 13:37:54Z glebius $
31 */
32
33/*
34 * Loopback interface driver for protocol testing and timing.
35 */
36
37#include "opt_atalk.h"
38#include "opt_inet.h"

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103int looutput(struct ifnet *ifp, struct mbuf *m,
104 struct sockaddr *dst, struct route *ro);
105static int lo_clone_create(struct if_clone *, int, caddr_t);
106static void lo_clone_destroy(struct ifnet *);
107
108VNET_DEFINE(struct ifnet *, loif); /* Used externally */
109
110#ifdef VIMAGE
31 */
32
33/*
34 * Loopback interface driver for protocol testing and timing.
35 */
36
37#include "opt_atalk.h"
38#include "opt_inet.h"

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103int looutput(struct ifnet *ifp, struct mbuf *m,
104 struct sockaddr *dst, struct route *ro);
105static int lo_clone_create(struct if_clone *, int, caddr_t);
106static void lo_clone_destroy(struct ifnet *);
107
108VNET_DEFINE(struct ifnet *, loif); /* Used externally */
109
110#ifdef VIMAGE
111static VNET_DEFINE(struct ifc_simple_data, lo_cloner_data);
112static VNET_DEFINE(struct if_clone, lo_cloner);
113#define V_lo_cloner_data VNET(lo_cloner_data)
111static VNET_DEFINE(struct if_clone *, lo_cloner);
114#define V_lo_cloner VNET(lo_cloner)
115#endif
116
112#define V_lo_cloner VNET(lo_cloner)
113#endif
114
117IFC_SIMPLE_DECLARE(lo, 1);
115static struct if_clone *lo_cloner;
116static const char loname[] = "lo";
118
119static void
120lo_clone_destroy(struct ifnet *ifp)
121{
122
123#ifndef VIMAGE
124 /* XXX: destroying lo0 will lead to panics. */
125 KASSERT(V_loif != ifp, ("%s: destroying lo0", __func__));

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134lo_clone_create(struct if_clone *ifc, int unit, caddr_t params)
135{
136 struct ifnet *ifp;
137
138 ifp = if_alloc(IFT_LOOP);
139 if (ifp == NULL)
140 return (ENOSPC);
141
117
118static void
119lo_clone_destroy(struct ifnet *ifp)
120{
121
122#ifndef VIMAGE
123 /* XXX: destroying lo0 will lead to panics. */
124 KASSERT(V_loif != ifp, ("%s: destroying lo0", __func__));

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133lo_clone_create(struct if_clone *ifc, int unit, caddr_t params)
134{
135 struct ifnet *ifp;
136
137 ifp = if_alloc(IFT_LOOP);
138 if (ifp == NULL)
139 return (ENOSPC);
140
142 if_initname(ifp, ifc->ifc_name, unit);
141 if_initname(ifp, loname, unit);
143 ifp->if_mtu = LOMTU;
144 ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
145 ifp->if_ioctl = loioctl;
146 ifp->if_output = looutput;
147 ifp->if_snd.ifq_maxlen = ifqmaxlen;
148 ifp->if_capabilities = ifp->if_capenable =
149 IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
150 ifp->if_hwassist = LO_CSUM_FEATURES | LO_CSUM_FEATURES6;

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156 return (0);
157}
158
159static void
160vnet_loif_init(const void *unused __unused)
161{
162
163#ifdef VIMAGE
142 ifp->if_mtu = LOMTU;
143 ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
144 ifp->if_ioctl = loioctl;
145 ifp->if_output = looutput;
146 ifp->if_snd.ifq_maxlen = ifqmaxlen;
147 ifp->if_capabilities = ifp->if_capenable =
148 IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
149 ifp->if_hwassist = LO_CSUM_FEATURES | LO_CSUM_FEATURES6;

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155 return (0);
156}
157
158static void
159vnet_loif_init(const void *unused __unused)
160{
161
162#ifdef VIMAGE
163 lo_cloner = if_clone_simple(loname, lo_clone_create, lo_clone_destroy,
164 1);
164 V_lo_cloner = lo_cloner;
165 V_lo_cloner = lo_cloner;
165 V_lo_cloner_data = lo_cloner_data;
166 V_lo_cloner.ifc_data = &V_lo_cloner_data;
167 if_clone_attach(&V_lo_cloner);
168#else
166#else
169 if_clone_attach(&lo_cloner);
167 lo_cloner = if_clone_simple(loname, lo_clone_create, lo_clone_destroy,
168 1);
170#endif
171}
172VNET_SYSINIT(vnet_loif_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
173 vnet_loif_init, NULL);
174
175#ifdef VIMAGE
176static void
177vnet_loif_uninit(const void *unused __unused)
178{
179
169#endif
170}
171VNET_SYSINIT(vnet_loif_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
172 vnet_loif_init, NULL);
173
174#ifdef VIMAGE
175static void
176vnet_loif_uninit(const void *unused __unused)
177{
178
180 if_clone_detach(&V_lo_cloner);
179 if_clone_detach(V_lo_cloner);
181 V_loif = NULL;
182}
183VNET_SYSUNINIT(vnet_loif_uninit, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
184 vnet_loif_uninit, NULL);
185#endif
186
187static int
188loop_modevent(module_t mod, int type, void *data)

--- 300 unchanged lines hidden --- 		180 V_loif = NULL;
181}
182VNET_SYSUNINIT(vnet_loif_uninit, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
183 vnet_loif_uninit, NULL);
184#endif
185
186static int
187loop_modevent(module_t mod, int type, void *data)

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