2 * Copyright (c) 2014-2018, Matthew Macy <mmacy@mattmacy.io>
3 * Copyright (C) 2017-2018 Joyent Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * 2. Neither the name of Matthew Macy nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 #include "opt_inet6.h"
35 #include "opt_sched.h"
37 #include <sys/param.h>
38 #include <sys/types.h>
40 #include <sys/eventhandler.h>
41 #include <sys/event.h>
42 #include <sys/sockio.h>
43 #include <sys/kernel.h>
45 #include <sys/mutex.h>
46 #include <sys/module.h>
51 #include <sys/socket.h>
52 #include <sys/sysctl.h>
53 #include <sys/syslog.h>
54 #include <sys/taskqueue.h>
55 #include <sys/limits.h>
56 #include <sys/queue.h>
63 #include <net/if_var.h>
64 #include <net/if_types.h>
65 #include <net/if_media.h>
66 #include <net/if_clone.h>
68 #include <net/ethernet.h>
71 #include <net/iflib.h>
72 #include <net/iflib_private.h>
76 noop_attach(device_t dev)
82 iflib_pseudo_detach(device_t dev)
87 ctx = device_get_softc(dev);
88 ifc_flags = iflib_get_flags(ctx);
89 if ((ifc_flags & IFC_INIT_DONE) == 0)
91 return (IFDI_DETACH(ctx));
94 static device_t iflib_pseudodev;
96 static struct mtx pseudoif_mtx;
97 MTX_SYSINIT(pseudoif_mtx, &pseudoif_mtx, "pseudoif_mtx", MTX_DEF);
99 #define PSEUDO_LOCK() mtx_lock(&pseudoif_mtx);
100 #define PSEUDO_UNLOCK() mtx_unlock(&pseudoif_mtx);
103 eventhandler_tag ip_detach_tag;
104 eventhandler_tag ip_lladdr_tag;
105 struct if_clone *ip_ifc;
106 if_shared_ctx_t ip_sctx;
108 LIST_ENTRY(if_pseudo) ip_list;
112 static LIST_HEAD(, if_pseudo) iflib_pseudos = LIST_HEAD_INITIALIZER(iflib_pseudos);
115 * XXX this assumes that the rest of the
116 * code won't hang on to it after it's
120 iflib_ip_lookup(const char *name)
122 if_pseudo_t ip = NULL;
125 LIST_FOREACH(ip, &iflib_pseudos, ip_list) {
126 if (!strcmp(ip->ip_sctx->isc_name, name))
134 iflib_ip_delete(if_pseudo_t ip)
137 if (ip->ip_on_list) {
138 LIST_REMOVE(ip, ip_list);
145 iflib_ip_insert(if_pseudo_t ip)
148 if (!ip->ip_on_list) {
149 LIST_INSERT_HEAD(&iflib_pseudos, ip, ip_list);
156 iflib_ifdetach(void *arg __unused, if_t ifp)
159 /* If the ifnet is just being renamed, don't do anything. */
160 if (ifp->if_flags & IFF_RENAMING)
165 iflib_iflladdr(void *arg __unused, if_t ifp __unused)
171 iflib_clone_create(struct if_clone *ifc, int unit, caddr_t params)
173 const char *name = ifc_name(ifc);
174 struct iflib_cloneattach_ctx clctx;
182 clctx.cc_params = params;
183 clctx.cc_name = name;
185 if (__predict_false(iflib_pseudodev == NULL)) {
186 /* SYSINIT initialization would panic !?! */
188 iflib_pseudodev = device_add_child(root_bus, "ifpseudo", 0);
190 MPASS(iflib_pseudodev != NULL);
192 ip = iflib_ip_lookup(name);
194 printf("no ip found for %s\n", name);
197 if ((dev = devclass_get_device(ip->ip_dc, unit)) != NULL) {
198 printf("unit %d allocated\n", unit);
199 bus_generic_print_child(iflib_pseudodev, dev);
203 dev = device_add_child(iflib_pseudodev, name, unit);
204 device_set_driver(dev, &iflib_pseudodriver);
207 rc = device_attach(dev);
210 MPASS(devclass_get_device(ip->ip_dc, unit) == dev);
211 rc = iflib_pseudo_register(dev, ip->ip_sctx, &ctx, &clctx);
214 device_delete_child(iflib_pseudodev, dev);
217 device_set_softc(dev, ctx);
223 iflib_clone_destroy(if_t ifp)
231 * Detach device / free / free unit
233 ctx = if_getsoftc(ifp);
234 dev = iflib_get_dev(ctx);
235 ctx_lock = iflib_ctx_lock_get(ctx);
237 iflib_set_detach(ctx);
239 sx_xunlock(ctx_lock);
242 rc = device_delete_child(iflib_pseudodev, dev);
245 iflib_pseudo_deregister(ctx);
249 iflib_clone_register(if_shared_ctx_t sctx)
253 if (sctx->isc_name == NULL) {
254 printf("iflib_clone_register failed - shared_ctx needs to have a device name\n");
257 if (iflib_ip_lookup(sctx->isc_name) != NULL) {
258 printf("iflib_clone_register failed - shared_ctx %s alread registered\n",
262 ip = malloc(sizeof(*ip), M_IFLIB, M_WAITOK|M_ZERO);
264 ip->ip_dc = devclass_create(sctx->isc_name);
265 if (ip->ip_dc == NULL)
267 /* XXX --- we can handle clone_advanced later */
268 ip->ip_ifc = if_clone_simple(sctx->isc_name, iflib_clone_create, iflib_clone_destroy, 0);
269 if (ip->ip_ifc == NULL) {
270 printf("clone_simple failed -- cloned %s devices will not be available\n", sctx->isc_name);
273 ifc_flags_set(ip->ip_ifc, IFC_NOGROUP);
274 ip->ip_lladdr_tag = EVENTHANDLER_REGISTER(iflladdr_event,
275 iflib_iflladdr, NULL, EVENTHANDLER_PRI_ANY);
276 if (ip->ip_lladdr_tag == NULL)
278 ip->ip_detach_tag = EVENTHANDLER_REGISTER(ifnet_departure_event,
279 iflib_ifdetach, NULL, EVENTHANDLER_PRI_ANY);
281 if (ip->ip_detach_tag == NULL)
287 EVENTHANDLER_DEREGISTER(iflladdr_event, ip->ip_lladdr_tag);
289 if_clone_detach(ip->ip_ifc);
296 iflib_clone_deregister(if_pseudo_t ip)
298 /* XXX check that is not still in use */
300 EVENTHANDLER_DEREGISTER(ifnet_departure_event, ip->ip_detach_tag);
301 EVENTHANDLER_DEREGISTER(iflladdr_event, ip->ip_lladdr_tag);
302 if_clone_detach(ip->ip_ifc);
303 /* XXX free devclass */