File: | net/if_bridge.c |
Warning: | line 1052, column 54 The left operand of '==' is a garbage value |
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1 | /* $OpenBSD: if_bridge.c,v 1.363 2022/01/04 06:32:39 yasuoka Exp $ */ | |||
2 | ||||
3 | /* | |||
4 | * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net) | |||
5 | * All rights reserved. | |||
6 | * | |||
7 | * Redistribution and use in source and binary forms, with or without | |||
8 | * modification, are permitted provided that the following conditions | |||
9 | * are met: | |||
10 | * 1. Redistributions of source code must retain the above copyright | |||
11 | * notice, this list of conditions and the following disclaimer. | |||
12 | * 2. Redistributions in binary form must reproduce the above copyright | |||
13 | * notice, this list of conditions and the following disclaimer in the | |||
14 | * documentation and/or other materials provided with the distribution. | |||
15 | * | |||
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |||
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |||
19 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |||
20 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |||
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |||
22 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |||
24 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |||
25 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||
26 | * POSSIBILITY OF SUCH DAMAGE. | |||
27 | * | |||
28 | * Effort sponsored in part by the Defense Advanced Research Projects | |||
29 | * Agency (DARPA) and Air Force Research Laboratory, Air Force | |||
30 | * Materiel Command, USAF, under agreement number F30602-01-2-0537. | |||
31 | * | |||
32 | */ | |||
33 | ||||
34 | #include "bpfilter.h" | |||
35 | #include "gif.h" | |||
36 | #include "pf.h" | |||
37 | #include "carp.h" | |||
38 | #include "vlan.h" | |||
39 | ||||
40 | #include <sys/param.h> | |||
41 | #include <sys/systm.h> | |||
42 | #include <sys/mbuf.h> | |||
43 | #include <sys/socket.h> | |||
44 | #include <sys/ioctl.h> | |||
45 | #include <sys/kernel.h> | |||
46 | ||||
47 | #include <net/if.h> | |||
48 | #include <net/if_types.h> | |||
49 | #include <net/if_llc.h> | |||
50 | #include <net/netisr.h> | |||
51 | ||||
52 | #include <netinet/in.h> | |||
53 | #include <netinet/ip.h> | |||
54 | #include <netinet/ip_var.h> | |||
55 | #include <netinet/if_ether.h> | |||
56 | #include <netinet/ip_icmp.h> | |||
57 | ||||
58 | #ifdef IPSEC1 | |||
59 | #include <netinet/ip_ipsp.h> | |||
60 | #include <net/if_enc.h> | |||
61 | #endif | |||
62 | ||||
63 | #ifdef INET61 | |||
64 | #include <netinet6/in6_var.h> | |||
65 | #include <netinet/ip6.h> | |||
66 | #include <netinet6/ip6_var.h> | |||
67 | #endif | |||
68 | ||||
69 | #if NPF1 > 0 | |||
70 | #include <net/pfvar.h> | |||
71 | #define BRIDGE_INPF_IN PF_IN | |||
72 | #define BRIDGE_OUTPF_OUT PF_OUT | |||
73 | #else | |||
74 | #define BRIDGE_INPF_IN 0 | |||
75 | #define BRIDGE_OUTPF_OUT 1 | |||
76 | #endif | |||
77 | ||||
78 | #if NBPFILTER1 > 0 | |||
79 | #include <net/bpf.h> | |||
80 | #endif | |||
81 | ||||
82 | #if NCARP1 > 0 | |||
83 | #include <netinet/ip_carp.h> | |||
84 | #endif | |||
85 | ||||
86 | #if NVLAN1 > 0 | |||
87 | #include <net/if_vlan_var.h> | |||
88 | #endif | |||
89 | ||||
90 | #include <net/if_bridge.h> | |||
91 | ||||
92 | /* | |||
93 | * Maximum number of addresses to cache | |||
94 | */ | |||
95 | #ifndef BRIDGE_RTABLE_MAX100 | |||
96 | #define BRIDGE_RTABLE_MAX100 100 | |||
97 | #endif | |||
98 | ||||
99 | /* | |||
100 | * Timeout (in seconds) for entries learned dynamically | |||
101 | */ | |||
102 | #ifndef BRIDGE_RTABLE_TIMEOUT240 | |||
103 | #define BRIDGE_RTABLE_TIMEOUT240 240 | |||
104 | #endif | |||
105 | ||||
106 | void bridgeattach(int); | |||
107 | int bridge_ioctl(struct ifnet *, u_long, caddr_t); | |||
108 | void bridge_ifdetach(void *); | |||
109 | void bridge_spandetach(void *); | |||
110 | int bridge_ifremove(struct bridge_iflist *); | |||
111 | void bridge_spanremove(struct bridge_iflist *); | |||
112 | struct mbuf * | |||
113 | bridge_input(struct ifnet *, struct mbuf *, uint64_t, void *); | |||
114 | void bridge_process(struct ifnet *, struct mbuf *); | |||
115 | void bridgeintr_frame(struct ifnet *, struct ifnet *, struct mbuf *); | |||
116 | void bridge_bifgetstp(struct bridge_softc *, struct bridge_iflist *, | |||
117 | struct ifbreq *); | |||
118 | void bridge_broadcast(struct bridge_softc *, struct ifnet *, | |||
119 | struct ether_header *, struct mbuf *); | |||
120 | int bridge_localbroadcast(struct ifnet *, struct ether_header *, | |||
121 | struct mbuf *); | |||
122 | void bridge_span(struct ifnet *, struct mbuf *); | |||
123 | void bridge_stop(struct bridge_softc *); | |||
124 | void bridge_init(struct bridge_softc *); | |||
125 | int bridge_bifconf(struct bridge_softc *, struct ifbifconf *); | |||
126 | int bridge_blocknonip(struct ether_header *, struct mbuf *); | |||
127 | void bridge_ifinput(struct ifnet *, struct mbuf *); | |||
128 | int bridge_dummy_output(struct ifnet *, struct mbuf *, struct sockaddr *, | |||
129 | struct rtentry *); | |||
130 | void bridge_send_icmp_err(struct ifnet *, struct ether_header *, | |||
131 | struct mbuf *, int, struct llc *, int, int, int); | |||
132 | int bridge_ifenqueue(struct ifnet *, struct ifnet *, struct mbuf *); | |||
133 | struct mbuf *bridge_ip(struct ifnet *, int, struct ifnet *, | |||
134 | struct ether_header *, struct mbuf *); | |||
135 | #ifdef IPSEC1 | |||
136 | int bridge_ipsec(struct ifnet *, struct ether_header *, int, struct llc *, | |||
137 | int, int, int, struct mbuf *); | |||
138 | #endif | |||
139 | int bridge_clone_create(struct if_clone *, int); | |||
140 | int bridge_clone_destroy(struct ifnet *); | |||
141 | void bridge_take(void *); | |||
142 | void bridge_rele(void *); | |||
143 | ||||
144 | #define ETHERADDR_IS_IP_MCAST(a)((a)->ether_addr_octet[0] == 0x01 && (a)->ether_addr_octet [1] == 0x00 && (a)->ether_addr_octet[2] == 0x5e) \ | |||
145 | /* struct etheraddr *a; */ \ | |||
146 | ((a)->ether_addr_octet[0] == 0x01 && \ | |||
147 | (a)->ether_addr_octet[1] == 0x00 && \ | |||
148 | (a)->ether_addr_octet[2] == 0x5e) | |||
149 | ||||
150 | struct niqueue bridgeintrq = NIQUEUE_INITIALIZER(1024, NETISR_BRIDGE){ { { ((void *)0), ((((0x7)) > 0x0 && ((0x7)) < 0x9) ? 0x9 : ((0x7))), 0x0 }, { ((void *)0), ((void *)0), 0 } , ((1024)), 0 }, (29) }; | |||
151 | ||||
152 | struct if_clone bridge_cloner = | |||
153 | IF_CLONE_INITIALIZER("bridge", bridge_clone_create, bridge_clone_destroy){ .ifc_list = { ((void *)0), ((void *)0) }, .ifc_name = "bridge" , .ifc_namelen = sizeof("bridge") - 1, .ifc_create = bridge_clone_create , .ifc_destroy = bridge_clone_destroy, }; | |||
154 | ||||
155 | const struct ether_brport bridge_brport = { | |||
156 | bridge_input, | |||
157 | bridge_take, | |||
158 | bridge_rele, | |||
159 | NULL((void *)0), | |||
160 | }; | |||
161 | ||||
162 | void | |||
163 | bridgeattach(int n) | |||
164 | { | |||
165 | if_clone_attach(&bridge_cloner); | |||
166 | } | |||
167 | ||||
168 | int | |||
169 | bridge_clone_create(struct if_clone *ifc, int unit) | |||
170 | { | |||
171 | struct bridge_softc *sc; | |||
172 | struct ifnet *ifp; | |||
173 | int i; | |||
174 | ||||
175 | sc = malloc(sizeof(*sc), M_DEVBUF2, M_WAITOK0x0001|M_ZERO0x0008); | |||
176 | sc->sc_stp = bstp_create(); | |||
177 | if (!sc->sc_stp) { | |||
178 | free(sc, M_DEVBUF2, sizeof *sc); | |||
179 | return (ENOMEM12); | |||
180 | } | |||
181 | ||||
182 | sc->sc_brtmax = BRIDGE_RTABLE_MAX100; | |||
183 | sc->sc_brttimeout = BRIDGE_RTABLE_TIMEOUT240; | |||
184 | timeout_set(&sc->sc_brtimeout, bridge_rtage, sc); | |||
185 | SMR_SLIST_INIT(&sc->sc_iflist)do { (&sc->sc_iflist)->smr_slh_first = ((void *)0); } while (0); | |||
186 | SMR_SLIST_INIT(&sc->sc_spanlist)do { (&sc->sc_spanlist)->smr_slh_first = ((void *)0 ); } while (0); | |||
187 | mtx_init(&sc->sc_mtx, IPL_MPFLOOR)do { (void)(((void *)0)); (void)(0); __mtx_init((&sc-> sc_mtx), ((((0x9)) > 0x0 && ((0x9)) < 0x9) ? 0x9 : ((0x9)))); } while (0); | |||
188 | for (i = 0; i < BRIDGE_RTABLE_SIZE1024; i++) | |||
189 | LIST_INIT(&sc->sc_rts[i])do { ((&sc->sc_rts[i])->lh_first) = ((void *)0); } while (0); | |||
190 | arc4random_buf(&sc->sc_hashkey, sizeof(sc->sc_hashkey)); | |||
191 | ifp = &sc->sc_if; | |||
192 | snprintf(ifp->if_xname, sizeof ifp->if_xname, "%s%d", ifc->ifc_name, | |||
193 | unit); | |||
194 | ifp->if_softc = sc; | |||
195 | ifp->if_mtuif_data.ifi_mtu = ETHERMTU(1518 - ((6 * 2) + 2) - 4); | |||
196 | ifp->if_ioctl = bridge_ioctl; | |||
197 | ifp->if_output = bridge_dummy_output; | |||
198 | ifp->if_xflags = IFXF_CLONED0x2; | |||
199 | ifp->if_start = NULL((void *)0); | |||
200 | ifp->if_typeif_data.ifi_type = IFT_BRIDGE0xd1; | |||
201 | ifp->if_hdrlenif_data.ifi_hdrlen = ETHER_HDR_LEN((6 * 2) + 2); | |||
202 | ||||
203 | if_attach(ifp); | |||
204 | if_alloc_sadl(ifp); | |||
205 | ||||
206 | #if NBPFILTER1 > 0 | |||
207 | bpfattach(&sc->sc_if.if_bpf, ifp, | |||
208 | DLT_EN10MB1, ETHER_HDR_LEN((6 * 2) + 2)); | |||
209 | #endif | |||
210 | ||||
211 | return (0); | |||
212 | } | |||
213 | ||||
214 | int | |||
215 | bridge_dummy_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, | |||
216 | struct rtentry *rt) | |||
217 | { | |||
218 | m_freem(m); | |||
219 | return (EAFNOSUPPORT47); | |||
220 | } | |||
221 | ||||
222 | int | |||
223 | bridge_clone_destroy(struct ifnet *ifp) | |||
224 | { | |||
225 | struct bridge_softc *sc = ifp->if_softc; | |||
226 | struct bridge_iflist *bif; | |||
227 | ||||
228 | /* | |||
229 | * bridge(4) detach hook doesn't need the NET_LOCK(), worst the | |||
230 | * use of smr_barrier() while holding the lock might lead to a | |||
231 | * deadlock situation. | |||
232 | */ | |||
233 | NET_ASSERT_UNLOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s == 0x0001UL)) splassert_fail(0, 0x0001UL, __func__ ); } while (0); | |||
234 | ||||
235 | bridge_stop(sc); | |||
236 | bridge_rtflush(sc, IFBF_FLUSHALL0x1); | |||
237 | while ((bif = SMR_SLIST_FIRST_LOCKED(&sc->sc_iflist)(*(&(&sc->sc_iflist)->smr_slh_first))) != NULL((void *)0)) | |||
238 | bridge_ifremove(bif); | |||
239 | while ((bif = SMR_SLIST_FIRST_LOCKED(&sc->sc_spanlist)(*(&(&sc->sc_spanlist)->smr_slh_first))) != NULL((void *)0)) | |||
240 | bridge_spanremove(bif); | |||
241 | ||||
242 | bstp_destroy(sc->sc_stp); | |||
243 | ||||
244 | if_detach(ifp); | |||
245 | ||||
246 | free(sc, M_DEVBUF2, sizeof *sc); | |||
247 | return (0); | |||
248 | } | |||
249 | ||||
250 | int | |||
251 | bridge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) | |||
252 | { | |||
253 | struct bridge_softc *sc = (struct bridge_softc *)ifp->if_softc; | |||
254 | struct ifbreq *req = (struct ifbreq *)data; | |||
255 | struct ifbropreq *brop = (struct ifbropreq *)data; | |||
256 | struct ifnet *ifs; | |||
257 | struct bridge_iflist *bif; | |||
258 | struct bstp_port *bp; | |||
259 | struct bstp_state *bs = sc->sc_stp; | |||
260 | int error = 0; | |||
261 | ||||
262 | /* | |||
263 | * bridge(4) data structure aren't protected by the NET_LOCK(). | |||
264 | * Idealy it shouldn't be taken before calling `ifp->if_ioctl' | |||
265 | * but we aren't there yet. | |||
266 | */ | |||
267 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); | |||
268 | ||||
269 | switch (cmd) { | |||
270 | case SIOCBRDGADD((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((60))): | |||
271 | /* bridge(4) does not distinguish between routing/forwarding ports */ | |||
272 | case SIOCBRDGADDL((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((73))): | |||
273 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) | |||
274 | break; | |||
275 | ||||
276 | ifs = if_unit(req->ifbr_ifsname); | |||
277 | if (ifs == NULL((void *)0)) { /* no such interface */ | |||
278 | error = ENOENT2; | |||
279 | break; | |||
280 | } | |||
281 | if (ifs->if_typeif_data.ifi_type != IFT_ETHER0x06) { | |||
282 | if_put(ifs); | |||
283 | error = EINVAL22; | |||
284 | break; | |||
285 | } | |||
286 | if (ifs->if_bridgeidx != 0) { | |||
287 | if (ifs->if_bridgeidx == ifp->if_index) | |||
288 | error = EEXIST17; | |||
289 | else | |||
290 | error = EBUSY16; | |||
291 | if_put(ifs); | |||
292 | break; | |||
293 | } | |||
294 | ||||
295 | error = ether_brport_isset(ifs); | |||
296 | if (error != 0) { | |||
297 | if_put(ifs); | |||
298 | break; | |||
299 | } | |||
300 | ||||
301 | /* If it's in the span list, it can't be a member. */ | |||
302 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_spanlist, bif_next)for ((bif) = (*(&(&sc->sc_spanlist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
303 | if (bif->ifp == ifs) | |||
304 | break; | |||
305 | } | |||
306 | if (bif != NULL((void *)0)) { | |||
307 | if_put(ifs); | |||
308 | error = EBUSY16; | |||
309 | break; | |||
310 | } | |||
311 | ||||
312 | bif = malloc(sizeof(*bif), M_DEVBUF2, M_NOWAIT0x0002|M_ZERO0x0008); | |||
313 | if (bif == NULL((void *)0)) { | |||
314 | if_put(ifs); | |||
315 | error = ENOMEM12; | |||
316 | break; | |||
317 | } | |||
318 | ||||
319 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); | |||
320 | error = ifpromisc(ifs, 1); | |||
321 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); | |||
322 | if (error != 0) { | |||
323 | if_put(ifs); | |||
324 | free(bif, M_DEVBUF2, sizeof(*bif)); | |||
325 | break; | |||
326 | } | |||
327 | ||||
328 | /* | |||
329 | * XXX If the NET_LOCK() or ifpromisc() calls above | |||
330 | * had to sleep, then something else could have come | |||
331 | * along and taken over ifs while the kernel lock was | |||
332 | * released. | |||
333 | */ | |||
334 | ||||
335 | bif->bridge_sc = sc; | |||
336 | bif->ifp = ifs; | |||
337 | bif->bif_flags = IFBIF_LEARNING0x0001 | IFBIF_DISCOVER0x0002; | |||
338 | SIMPLEQ_INIT(&bif->bif_brlin)do { (&bif->bif_brlin)->sqh_first = ((void *)0); (& bif->bif_brlin)->sqh_last = &(&bif->bif_brlin )->sqh_first; } while (0); | |||
339 | SIMPLEQ_INIT(&bif->bif_brlout)do { (&bif->bif_brlout)->sqh_first = ((void *)0); ( &bif->bif_brlout)->sqh_last = &(&bif->bif_brlout )->sqh_first; } while (0); | |||
340 | ifs->if_bridgeidx = ifp->if_index; | |||
341 | task_set(&bif->bif_dtask, bridge_ifdetach, bif); | |||
342 | if_detachhook_add(ifs, &bif->bif_dtask); | |||
343 | ether_brport_set(bif->ifp, &bridge_brport); | |||
344 | SMR_SLIST_INSERT_HEAD_LOCKED(&sc->sc_iflist, bif, bif_next)do { (bif)->bif_next.smr_sle_next = (&sc->sc_iflist )->smr_slh_first; do { __asm volatile("" ::: "memory"); } while (0); (&sc->sc_iflist)->smr_slh_first = (bif); } while (0); | |||
345 | break; | |||
346 | case SIOCBRDGDEL((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((61))): | |||
347 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) | |||
348 | break; | |||
349 | error = bridge_findbif(sc, req->ifbr_ifsname, &bif); | |||
350 | if (error != 0) | |||
351 | break; | |||
352 | bridge_ifremove(bif); | |||
353 | break; | |||
354 | case SIOCBRDGIFS(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbreq) & 0x1fff) << 16) | ((('i')) << 8) | ((66))): | |||
355 | error = bridge_bifconf(sc, (struct ifbifconf *)data); | |||
356 | break; | |||
357 | case SIOCBRDGADDS((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((65))): | |||
358 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) | |||
359 | break; | |||
360 | ifs = if_unit(req->ifbr_ifsname); | |||
361 | if (ifs == NULL((void *)0)) { /* no such interface */ | |||
362 | error = ENOENT2; | |||
363 | break; | |||
364 | } | |||
365 | if (ifs->if_typeif_data.ifi_type != IFT_ETHER0x06) { | |||
366 | if_put(ifs); | |||
367 | error = EINVAL22; | |||
368 | break; | |||
369 | } | |||
370 | if (ifs->if_bridgeidx != 0) { | |||
371 | if (ifs->if_bridgeidx == ifp->if_index) | |||
372 | error = EEXIST17; | |||
373 | else | |||
374 | error = EBUSY16; | |||
375 | if_put(ifs); | |||
376 | break; | |||
377 | } | |||
378 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_spanlist, bif_next)for ((bif) = (*(&(&sc->sc_spanlist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
379 | if (bif->ifp == ifs) | |||
380 | break; | |||
381 | } | |||
382 | if (bif != NULL((void *)0)) { | |||
383 | if_put(ifs); | |||
384 | error = EEXIST17; | |||
385 | break; | |||
386 | } | |||
387 | bif = malloc(sizeof(*bif), M_DEVBUF2, M_NOWAIT0x0002|M_ZERO0x0008); | |||
388 | if (bif == NULL((void *)0)) { | |||
389 | if_put(ifs); | |||
390 | error = ENOMEM12; | |||
391 | break; | |||
392 | } | |||
393 | bif->bridge_sc = sc; | |||
394 | bif->ifp = ifs; | |||
395 | bif->bif_flags = IFBIF_SPAN0x0100; | |||
396 | SIMPLEQ_INIT(&bif->bif_brlin)do { (&bif->bif_brlin)->sqh_first = ((void *)0); (& bif->bif_brlin)->sqh_last = &(&bif->bif_brlin )->sqh_first; } while (0); | |||
397 | SIMPLEQ_INIT(&bif->bif_brlout)do { (&bif->bif_brlout)->sqh_first = ((void *)0); ( &bif->bif_brlout)->sqh_last = &(&bif->bif_brlout )->sqh_first; } while (0); | |||
398 | task_set(&bif->bif_dtask, bridge_spandetach, bif); | |||
399 | if_detachhook_add(ifs, &bif->bif_dtask); | |||
400 | SMR_SLIST_INSERT_HEAD_LOCKED(&sc->sc_spanlist, bif, bif_next)do { (bif)->bif_next.smr_sle_next = (&sc->sc_spanlist )->smr_slh_first; do { __asm volatile("" ::: "memory"); } while (0); (&sc->sc_spanlist)->smr_slh_first = (bif); } while (0); | |||
401 | break; | |||
402 | case SIOCBRDGDELS((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((66))): | |||
403 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) | |||
404 | break; | |||
405 | ifs = if_unit(req->ifbr_ifsname); | |||
406 | if (ifs == NULL((void *)0)) { | |||
407 | error = ENOENT2; | |||
408 | break; | |||
409 | } | |||
410 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_spanlist, bif_next)for ((bif) = (*(&(&sc->sc_spanlist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
411 | if (bif->ifp == ifs) | |||
412 | break; | |||
413 | } | |||
414 | if_put(ifs); | |||
415 | if (bif == NULL((void *)0)) { | |||
416 | error = ESRCH3; | |||
417 | break; | |||
418 | } | |||
419 | bridge_spanremove(bif); | |||
420 | break; | |||
421 | case SIOCBRDGGIFFLGS(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbreq) & 0x1fff) << 16) | ((('i')) << 8) | ((62))): | |||
422 | error = bridge_findbif(sc, req->ifbr_ifsname, &bif); | |||
423 | if (error != 0) | |||
424 | break; | |||
425 | req->ifbr_ifsflags = bif->bif_flags; | |||
426 | req->ifbr_portno = bif->ifp->if_index & 0xfff; | |||
427 | req->ifbr_protected = bif->bif_protected; | |||
428 | if (bif->bif_flags & IFBIF_STP0x0008) | |||
429 | bridge_bifgetstp(sc, bif, req); | |||
430 | break; | |||
431 | case SIOCBRDGSIFFLGS((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((63))): | |||
432 | if (req->ifbr_ifsflags & IFBIF_RO_MASK0x0f00) { | |||
433 | error = EINVAL22; | |||
434 | break; | |||
435 | } | |||
436 | if ((error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc)) != 0) | |||
437 | break; | |||
438 | error = bridge_findbif(sc, req->ifbr_ifsname, &bif); | |||
439 | if (error != 0) | |||
440 | break; | |||
441 | if (req->ifbr_ifsflags & IFBIF_STP0x0008) { | |||
442 | if ((bif->bif_flags & IFBIF_STP0x0008) == 0) { | |||
443 | /* Enable STP */ | |||
444 | if ((bif->bif_stp = bstp_add(sc->sc_stp, | |||
445 | bif->ifp)) == NULL((void *)0)) { | |||
446 | error = ENOMEM12; | |||
447 | break; | |||
448 | } | |||
449 | } else { | |||
450 | /* Update STP flags */ | |||
451 | bstp_ifsflags(bif->bif_stp, req->ifbr_ifsflags); | |||
452 | } | |||
453 | } else if (bif->bif_flags & IFBIF_STP0x0008) { | |||
454 | bstp_delete(bif->bif_stp); | |||
455 | bif->bif_stp = NULL((void *)0); | |||
456 | } | |||
457 | bif->bif_flags = req->ifbr_ifsflags; | |||
458 | break; | |||
459 | case SIOCSIFFLAGS((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((16))): | |||
460 | if ((ifp->if_flags & IFF_UP0x1) == IFF_UP0x1) | |||
461 | bridge_init(sc); | |||
462 | ||||
463 | if ((ifp->if_flags & IFF_UP0x1) == 0) | |||
464 | bridge_stop(sc); | |||
465 | ||||
466 | break; | |||
467 | case SIOCBRDGGPARAM(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbropreq) & 0x1fff) << 16) | ((('i')) << 8) | ((88))): | |||
468 | if ((bp = bs->bs_root_port) == NULL((void *)0)) | |||
469 | brop->ifbop_root_port = 0; | |||
470 | else | |||
471 | brop->ifbop_root_port = bp->bp_ifindex; | |||
472 | brop->ifbop_maxage = bs->bs_bridge_max_age >> 8; | |||
473 | brop->ifbop_hellotime = bs->bs_bridge_htime >> 8; | |||
474 | brop->ifbop_fwddelay = bs->bs_bridge_fdelay >> 8; | |||
475 | brop->ifbop_holdcount = bs->bs_txholdcount; | |||
476 | brop->ifbop_priority = bs->bs_bridge_priority; | |||
477 | brop->ifbop_protocol = bs->bs_protover; | |||
478 | brop->ifbop_root_bridge = bs->bs_root_pv.pv_root_id; | |||
479 | brop->ifbop_root_path_cost = bs->bs_root_pv.pv_cost; | |||
480 | brop->ifbop_root_port = bs->bs_root_pv.pv_port_id; | |||
481 | brop->ifbop_desg_bridge = bs->bs_root_pv.pv_dbridge_id; | |||
482 | brop->ifbop_last_tc_time.tv_sec = bs->bs_last_tc_time.tv_sec; | |||
483 | brop->ifbop_last_tc_time.tv_usec = bs->bs_last_tc_time.tv_usec; | |||
484 | break; | |||
485 | case SIOCBRDGSIFPROT((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((74))): | |||
486 | error = bridge_findbif(sc, req->ifbr_ifsname, &bif); | |||
487 | if (error != 0) | |||
488 | break; | |||
489 | bif->bif_protected = req->ifbr_protected; | |||
490 | break; | |||
491 | case SIOCBRDGRTS(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbaconf) & 0x1fff) << 16) | ((('i')) << 8) | ((67))): | |||
492 | case SIOCBRDGGCACHE(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((65))): | |||
493 | case SIOCBRDGGPRI(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((80))): | |||
494 | case SIOCBRDGGMA(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((83))): | |||
495 | case SIOCBRDGGHT(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((81))): | |||
496 | case SIOCBRDGGFD(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((82))): | |||
497 | case SIOCBRDGGTO(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((70))): | |||
498 | case SIOCBRDGGRL(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbrlconf) & 0x1fff) << 16) | ((('i')) << 8) | ((79))): | |||
499 | break; | |||
500 | case SIOCBRDGFLUSH((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((72))): | |||
501 | case SIOCBRDGSADDR(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct ifbareq) & 0x1fff) << 16) | ((('i')) << 8) | ((68))): | |||
502 | case SIOCBRDGDADDR((unsigned long)0x80000000 | ((sizeof(struct ifbareq) & 0x1fff ) << 16) | ((('i')) << 8) | ((71))): | |||
503 | case SIOCBRDGSCACHE((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((64))): | |||
504 | case SIOCBRDGSTO((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((69))): | |||
505 | case SIOCBRDGARL((unsigned long)0x80000000 | ((sizeof(struct ifbrlreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((77))): | |||
506 | case SIOCBRDGFRL((unsigned long)0x80000000 | ((sizeof(struct ifbrlreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((78))): | |||
507 | case SIOCBRDGSPRI((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((80))): | |||
508 | case SIOCBRDGSFD((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((82))): | |||
509 | case SIOCBRDGSMA((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((83))): | |||
510 | case SIOCBRDGSHT((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((81))): | |||
511 | case SIOCBRDGSTXHC((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((89))): | |||
512 | case SIOCBRDGSPROTO((unsigned long)0x80000000 | ((sizeof(struct ifbrparam) & 0x1fff) << 16) | ((('i')) << 8) | ((90))): | |||
513 | case SIOCBRDGSIFPRIO((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((84))): | |||
514 | case SIOCBRDGSIFCOST((unsigned long)0x80000000 | ((sizeof(struct ifbreq) & 0x1fff ) << 16) | ((('i')) << 8) | ((85))): | |||
515 | error = suser(curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc); | |||
516 | break; | |||
517 | default: | |||
518 | error = ENOTTY25; | |||
519 | break; | |||
520 | } | |||
521 | ||||
522 | if (!error) | |||
523 | error = bridgectl_ioctl(ifp, cmd, data); | |||
524 | ||||
525 | if (!error) | |||
526 | error = bstp_ioctl(ifp, cmd, data); | |||
527 | ||||
528 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); | |||
529 | return (error); | |||
530 | } | |||
531 | ||||
532 | /* Detach an interface from a bridge. */ | |||
533 | int | |||
534 | bridge_ifremove(struct bridge_iflist *bif) | |||
535 | { | |||
536 | struct bridge_softc *sc = bif->bridge_sc; | |||
537 | int error; | |||
538 | ||||
539 | SMR_SLIST_REMOVE_LOCKED(&sc->sc_iflist, bif, bridge_iflist, bif_next)do { if ((&sc->sc_iflist)->smr_slh_first == (bif)) { do { ((&sc->sc_iflist))->smr_slh_first = ((&sc ->sc_iflist))->smr_slh_first->bif_next.smr_sle_next; } while (0); } else { struct bridge_iflist *curelm = (&sc ->sc_iflist)->smr_slh_first; while (curelm->bif_next .smr_sle_next != (bif)) curelm = curelm->bif_next.smr_sle_next ; curelm->bif_next.smr_sle_next = curelm->bif_next.smr_sle_next ->bif_next.smr_sle_next; } } while (0); | |||
540 | if_detachhook_del(bif->ifp, &bif->bif_dtask); | |||
541 | ether_brport_clr(bif->ifp); | |||
542 | ||||
543 | smr_barrier()smr_barrier_impl(0); | |||
544 | ||||
545 | if (bif->bif_flags & IFBIF_STP0x0008) { | |||
546 | bstp_delete(bif->bif_stp); | |||
547 | bif->bif_stp = NULL((void *)0); | |||
548 | } | |||
549 | ||||
550 | bif->ifp->if_bridgeidx = 0; | |||
551 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); | |||
552 | error = ifpromisc(bif->ifp, 0); | |||
553 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); | |||
554 | ||||
555 | bridge_rtdelete(sc, bif->ifp, 0); | |||
556 | bridge_flushrule(bif); | |||
557 | ||||
558 | if_put(bif->ifp); | |||
559 | bif->ifp = NULL((void *)0); | |||
560 | free(bif, M_DEVBUF2, sizeof(*bif)); | |||
561 | ||||
562 | return (error); | |||
563 | } | |||
564 | ||||
565 | void | |||
566 | bridge_spanremove(struct bridge_iflist *bif) | |||
567 | { | |||
568 | struct bridge_softc *sc = bif->bridge_sc; | |||
569 | ||||
570 | SMR_SLIST_REMOVE_LOCKED(&sc->sc_spanlist, bif, bridge_iflist, bif_next)do { if ((&sc->sc_spanlist)->smr_slh_first == (bif) ) { do { ((&sc->sc_spanlist))->smr_slh_first = ((& sc->sc_spanlist))->smr_slh_first->bif_next.smr_sle_next ;} while (0); } else { struct bridge_iflist *curelm = (&sc ->sc_spanlist)->smr_slh_first; while (curelm->bif_next .smr_sle_next != (bif)) curelm = curelm->bif_next.smr_sle_next ; curelm->bif_next.smr_sle_next = curelm->bif_next.smr_sle_next ->bif_next.smr_sle_next; } } while (0); | |||
571 | if_detachhook_del(bif->ifp, &bif->bif_dtask); | |||
572 | ||||
573 | smr_barrier()smr_barrier_impl(0); | |||
574 | ||||
575 | if_put(bif->ifp); | |||
576 | bif->ifp = NULL((void *)0); | |||
577 | free(bif, M_DEVBUF2, sizeof(*bif)); | |||
578 | } | |||
579 | ||||
580 | void | |||
581 | bridge_ifdetach(void *xbif) | |||
582 | { | |||
583 | struct bridge_iflist *bif = xbif; | |||
584 | ||||
585 | /* | |||
586 | * bridge(4) detach hook doesn't need the NET_LOCK(), worst the | |||
587 | * use of smr_barrier() while holding the lock might lead to a | |||
588 | * deadlock situation. | |||
589 | */ | |||
590 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); | |||
591 | bridge_ifremove(bif); | |||
592 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); | |||
593 | } | |||
594 | ||||
595 | void | |||
596 | bridge_spandetach(void *xbif) | |||
597 | { | |||
598 | struct bridge_iflist *bif = xbif; | |||
599 | ||||
600 | /* | |||
601 | * bridge(4) detach hook doesn't need the NET_LOCK(), worst the | |||
602 | * use of smr_barrier() while holding the lock might lead to a | |||
603 | * deadlock situation. | |||
604 | */ | |||
605 | NET_UNLOCK()do { rw_exit_write(&netlock); } while (0); | |||
606 | bridge_spanremove(bif); | |||
607 | NET_LOCK()do { rw_enter_write(&netlock); } while (0); | |||
608 | } | |||
609 | ||||
610 | void | |||
611 | bridge_bifgetstp(struct bridge_softc *sc, struct bridge_iflist *bif, | |||
612 | struct ifbreq *breq) | |||
613 | { | |||
614 | struct bstp_state *bs = sc->sc_stp; | |||
615 | struct bstp_port *bp = bif->bif_stp; | |||
616 | ||||
617 | breq->ifbr_state = bstp_getstate(bs, bp); | |||
618 | breq->ifbr_priority = bp->bp_priority; | |||
619 | breq->ifbr_path_cost = bp->bp_path_cost; | |||
620 | breq->ifbr_proto = bp->bp_protover; | |||
621 | breq->ifbr_role = bp->bp_role; | |||
622 | breq->ifbr_stpflags = bp->bp_flags; | |||
623 | breq->ifbr_fwd_trans = bp->bp_forward_transitions; | |||
624 | breq->ifbr_root_bridge = bs->bs_root_pv.pv_root_id; | |||
625 | breq->ifbr_root_cost = bs->bs_root_pv.pv_cost; | |||
626 | breq->ifbr_root_port = bs->bs_root_pv.pv_port_id; | |||
627 | breq->ifbr_desg_bridge = bs->bs_root_pv.pv_dbridge_id; | |||
628 | breq->ifbr_desg_port = bs->bs_root_pv.pv_dport_id; | |||
629 | ||||
630 | /* Copy STP state options as flags */ | |||
631 | if (bp->bp_operedge) | |||
632 | breq->ifbr_ifsflags |= IFBIF_BSTP_EDGE0x0010; | |||
633 | if (bp->bp_flags & BSTP_PORT_AUTOEDGE0x0010) | |||
634 | breq->ifbr_ifsflags |= IFBIF_BSTP_AUTOEDGE0x0020; | |||
635 | if (bp->bp_ptp_link) | |||
636 | breq->ifbr_ifsflags |= IFBIF_BSTP_PTP0x0040; | |||
637 | if (bp->bp_flags & BSTP_PORT_AUTOPTP0x0020) | |||
638 | breq->ifbr_ifsflags |= IFBIF_BSTP_AUTOPTP0x0080; | |||
639 | } | |||
640 | ||||
641 | int | |||
642 | bridge_bifconf(struct bridge_softc *sc, struct ifbifconf *bifc) | |||
643 | { | |||
644 | struct bridge_iflist *bif; | |||
645 | u_int32_t total = 0, i = 0; | |||
646 | int error = 0; | |||
647 | struct ifbreq *breq, *breqs = NULL((void *)0); | |||
648 | ||||
649 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) | |||
650 | total++; | |||
651 | ||||
652 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_spanlist, bif_next)for ((bif) = (*(&(&sc->sc_spanlist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) | |||
653 | total++; | |||
654 | ||||
655 | if (bifc->ifbic_len == 0) { | |||
656 | i = total; | |||
657 | goto done; | |||
658 | } | |||
659 | ||||
660 | breqs = mallocarray(total, sizeof(*breqs), M_TEMP127, M_NOWAIT0x0002|M_ZERO0x0008); | |||
661 | if (breqs == NULL((void *)0)) | |||
662 | goto done; | |||
663 | ||||
664 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
665 | if (bifc->ifbic_len < (i + 1) * sizeof(*breqs)) | |||
666 | break; | |||
667 | breq = &breqs[i]; | |||
668 | strlcpy(breq->ifbr_name, sc->sc_if.if_xname, IFNAMSIZ16); | |||
669 | strlcpy(breq->ifbr_ifsname, bif->ifp->if_xname, IFNAMSIZ16); | |||
670 | breq->ifbr_ifsflags = bif->bif_flags; | |||
671 | breq->ifbr_portno = bif->ifp->if_index & 0xfff; | |||
672 | breq->ifbr_protected = bif->bif_protected; | |||
673 | if (bif->bif_flags & IFBIF_STP0x0008) | |||
674 | bridge_bifgetstp(sc, bif, breq); | |||
675 | i++; | |||
676 | } | |||
677 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_spanlist, bif_next)for ((bif) = (*(&(&sc->sc_spanlist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
678 | if (bifc->ifbic_len < (i + 1) * sizeof(*breqs)) | |||
679 | break; | |||
680 | breq = &breqs[i]; | |||
681 | strlcpy(breq->ifbr_name, sc->sc_if.if_xname, IFNAMSIZ16); | |||
682 | strlcpy(breq->ifbr_ifsname, bif->ifp->if_xname, IFNAMSIZ16); | |||
683 | breq->ifbr_ifsflags = bif->bif_flags | IFBIF_SPAN0x0100; | |||
684 | breq->ifbr_portno = bif->ifp->if_index & 0xfff; | |||
685 | i++; | |||
686 | } | |||
687 | ||||
688 | error = copyout(breqs, bifc->ifbic_reqifbic_ifbicu.ifbicu_req, i * sizeof(*breqs)); | |||
689 | done: | |||
690 | free(breqs, M_TEMP127, total * sizeof(*breq)); | |||
691 | bifc->ifbic_len = i * sizeof(*breq); | |||
692 | return (error); | |||
693 | } | |||
694 | ||||
695 | int | |||
696 | bridge_findbif(struct bridge_softc *sc, const char *name, | |||
697 | struct bridge_iflist **rbif) | |||
698 | { | |||
699 | struct ifnet *ifp; | |||
700 | struct bridge_iflist *bif; | |||
701 | int error = 0; | |||
702 | ||||
703 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/net/if_bridge.c" , 703, "_kernel_lock_held()")); | |||
704 | ||||
705 | if ((ifp = if_unit(name)) == NULL((void *)0)) | |||
706 | return (ENOENT2); | |||
707 | ||||
708 | if (ifp->if_bridgeidx != sc->sc_if.if_index) { | |||
709 | error = ESRCH3; | |||
710 | goto put; | |||
711 | } | |||
712 | ||||
713 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
714 | if (bif->ifp == ifp) | |||
715 | break; | |||
716 | } | |||
717 | ||||
718 | if (bif == NULL((void *)0)) { | |||
719 | error = ENOENT2; | |||
720 | goto put; | |||
721 | } | |||
722 | ||||
723 | *rbif = bif; | |||
724 | put: | |||
725 | if_put(ifp); | |||
726 | ||||
727 | return (error); | |||
728 | } | |||
729 | ||||
730 | struct bridge_iflist * | |||
731 | bridge_getbif(struct ifnet *ifp) | |||
732 | { | |||
733 | struct bridge_iflist *bif; | |||
734 | struct bridge_softc *sc; | |||
735 | struct ifnet *bifp; | |||
736 | ||||
737 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/net/if_bridge.c" , 737, "_kernel_lock_held()")); | |||
738 | ||||
739 | bifp = if_get(ifp->if_bridgeidx); | |||
740 | if (bifp == NULL((void *)0)) | |||
741 | return (NULL((void *)0)); | |||
742 | ||||
743 | sc = bifp->if_softc; | |||
744 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
745 | if (bif->ifp == ifp) | |||
746 | break; | |||
747 | } | |||
748 | ||||
749 | if_put(bifp); | |||
750 | ||||
751 | return (bif); | |||
752 | } | |||
753 | ||||
754 | void | |||
755 | bridge_init(struct bridge_softc *sc) | |||
756 | { | |||
757 | struct ifnet *ifp = &sc->sc_if; | |||
758 | ||||
759 | if (ISSET(ifp->if_flags, IFF_RUNNING)((ifp->if_flags) & (0x40))) | |||
760 | return; | |||
761 | ||||
762 | bstp_enable(sc->sc_stp, ifp->if_index); | |||
763 | ||||
764 | if (sc->sc_brttimeout != 0) | |||
765 | timeout_add_sec(&sc->sc_brtimeout, sc->sc_brttimeout); | |||
766 | ||||
767 | SET(ifp->if_flags, IFF_RUNNING)((ifp->if_flags) |= (0x40)); | |||
768 | } | |||
769 | ||||
770 | /* | |||
771 | * Stop the bridge and deallocate the routing table. | |||
772 | */ | |||
773 | void | |||
774 | bridge_stop(struct bridge_softc *sc) | |||
775 | { | |||
776 | struct ifnet *ifp = &sc->sc_if; | |||
777 | ||||
778 | if (!ISSET(ifp->if_flags, IFF_RUNNING)((ifp->if_flags) & (0x40))) | |||
779 | return; | |||
780 | ||||
781 | CLR(ifp->if_flags, IFF_RUNNING)((ifp->if_flags) &= ~(0x40)); | |||
782 | ||||
783 | bstp_disable(sc->sc_stp); | |||
784 | ||||
785 | timeout_del_barrier(&sc->sc_brtimeout); | |||
786 | ||||
787 | bridge_rtflush(sc, IFBF_FLUSHDYN0x0); | |||
788 | } | |||
789 | ||||
790 | /* | |||
791 | * Send output from the bridge. The mbuf has the ethernet header | |||
792 | * already attached. We must enqueue or free the mbuf before exiting. | |||
793 | */ | |||
794 | int | |||
795 | bridge_enqueue(struct ifnet *ifp, struct mbuf *m) | |||
796 | { | |||
797 | struct ifnet *brifp; | |||
798 | struct ether_header *eh; | |||
799 | struct ifnet *dst_if = NULL((void *)0); | |||
800 | unsigned int dst_ifidx = 0; | |||
801 | #if NBPFILTER1 > 0 | |||
802 | caddr_t if_bpf; | |||
803 | #endif | |||
804 | int error = 0; | |||
805 | ||||
806 | if (m->m_lenm_hdr.mh_len < sizeof(*eh)) { | |||
807 | m = m_pullup(m, sizeof(*eh)); | |||
808 | if (m == NULL((void *)0)) | |||
809 | return (ENOBUFS55); | |||
810 | } | |||
811 | ||||
812 | /* ifp must be a member interface of the bridge. */ | |||
813 | brifp = if_get(ifp->if_bridgeidx); | |||
814 | if (brifp == NULL((void *)0)) { | |||
815 | m_freem(m); | |||
816 | return (EINVAL22); | |||
817 | } | |||
818 | ||||
819 | /* | |||
820 | * If bridge is down, but original output interface is up, | |||
821 | * go ahead and send out that interface. Otherwise the packet | |||
822 | * is dropped below. | |||
823 | */ | |||
824 | if (!ISSET(brifp->if_flags, IFF_RUNNING)((brifp->if_flags) & (0x40))) { | |||
825 | /* Loop prevention. */ | |||
826 | m->m_flagsm_hdr.mh_flags |= M_PROTO10x0010; | |||
827 | error = if_enqueue(ifp, m); | |||
828 | if_put(brifp); | |||
829 | return (error); | |||
830 | } | |||
831 | ||||
832 | #if NBPFILTER1 > 0 | |||
833 | if_bpf = brifp->if_bpf; | |||
834 | if (if_bpf) | |||
835 | bpf_mtap(if_bpf, m, BPF_DIRECTION_OUT(1 << 1)); | |||
836 | #endif | |||
837 | ifp->if_opacketsif_data.ifi_opackets++; | |||
838 | ifp->if_obytesif_data.ifi_obytes += m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
839 | ||||
840 | bridge_span(brifp, m); | |||
841 | ||||
842 | eh = mtod(m, struct ether_header *)((struct ether_header *)((m)->m_hdr.mh_data)); | |||
843 | if (!ETHER_IS_MULTICAST(eh->ether_dhost)(*(eh->ether_dhost) & 0x01)) { | |||
844 | struct ether_addr *dst; | |||
845 | ||||
846 | dst = (struct ether_addr *)&eh->ether_dhost[0]; | |||
847 | dst_ifidx = bridge_rtlookup(brifp, dst, m); | |||
848 | } | |||
849 | ||||
850 | /* | |||
851 | * If the packet is a broadcast or we don't know a better way to | |||
852 | * get there, send to all interfaces. | |||
853 | */ | |||
854 | if (dst_ifidx == 0) { | |||
855 | struct bridge_softc *sc = brifp->if_softc; | |||
856 | struct bridge_iflist *bif; | |||
857 | struct mbuf *mc; | |||
858 | ||||
859 | smr_read_enter(); | |||
860 | SMR_SLIST_FOREACH(bif, &sc->sc_iflist, bif_next)for ((bif) = ({ typeof(*&(&sc->sc_iflist)->smr_slh_first ) __tmp = *(volatile typeof(*&(&sc->sc_iflist)-> smr_slh_first) *)&(*&(&sc->sc_iflist)->smr_slh_first ); membar_datadep_consumer(); __tmp; }); (bif) != ((void *)0) ; (bif) = ({ typeof(*&(bif)->bif_next.smr_sle_next) __tmp = *(volatile typeof(*&(bif)->bif_next.smr_sle_next) * )&(*&(bif)->bif_next.smr_sle_next); membar_datadep_consumer (); __tmp; })) { | |||
861 | dst_if = bif->ifp; | |||
862 | if ((dst_if->if_flags & IFF_RUNNING0x40) == 0) | |||
863 | continue; | |||
864 | ||||
865 | /* | |||
866 | * If this is not the original output interface, | |||
867 | * and the interface is participating in spanning | |||
868 | * tree, make sure the port is in a state that | |||
869 | * allows forwarding. | |||
870 | */ | |||
871 | if (dst_if != ifp && | |||
872 | (bif->bif_flags & IFBIF_STP0x0008) && | |||
873 | (bif->bif_statebif_stp->bp_state == BSTP_IFSTATE_DISCARDING5)) | |||
874 | continue; | |||
875 | if ((bif->bif_flags & IFBIF_DISCOVER0x0002) == 0 && | |||
876 | (m->m_flagsm_hdr.mh_flags & (M_BCAST0x0100 | M_MCAST0x0200)) == 0) | |||
877 | continue; | |||
878 | ||||
879 | if (bridge_filterrule(&bif->bif_brlout, eh, m) == | |||
880 | BRL_ACTION_BLOCK0x01) | |||
881 | continue; | |||
882 | ||||
883 | mc = m_dup_pkt(m, ETHER_ALIGN2, M_NOWAIT0x0002); | |||
884 | if (mc == NULL((void *)0)) { | |||
885 | brifp->if_oerrorsif_data.ifi_oerrors++; | |||
886 | continue; | |||
887 | } | |||
888 | ||||
889 | error = bridge_ifenqueue(brifp, dst_if, mc); | |||
890 | if (error) | |||
891 | continue; | |||
892 | } | |||
893 | smr_read_leave(); | |||
894 | m_freem(m); | |||
895 | goto out; | |||
896 | } | |||
897 | ||||
898 | dst_if = if_get(dst_ifidx); | |||
899 | if ((dst_if == NULL((void *)0)) || !ISSET(dst_if->if_flags, IFF_RUNNING)((dst_if->if_flags) & (0x40))) { | |||
900 | m_freem(m); | |||
901 | if_put(dst_if); | |||
902 | error = ENETDOWN50; | |||
903 | goto out; | |||
904 | } | |||
905 | ||||
906 | bridge_ifenqueue(brifp, dst_if, m); | |||
907 | if_put(dst_if); | |||
908 | out: | |||
909 | if_put(brifp); | |||
910 | return (error); | |||
911 | } | |||
912 | ||||
913 | /* | |||
914 | * Loop through each bridge interface and process their input queues. | |||
915 | */ | |||
916 | void | |||
917 | bridgeintr(void) | |||
918 | { | |||
919 | struct mbuf_list ml; | |||
920 | struct mbuf *m; | |||
921 | struct ifnet *ifp; | |||
922 | ||||
923 | niq_delist(&bridgeintrq, &ml)mq_delist(&(&bridgeintrq)->ni_q, (&ml)); | |||
924 | if (ml_empty(&ml)((&ml)->ml_len == 0)) | |||
| ||||
925 | return; | |||
926 | ||||
927 | KERNEL_LOCK()_kernel_lock(); | |||
928 | while ((m = ml_dequeue(&ml)) != NULL((void *)0)) { | |||
929 | ||||
930 | ifp = if_get(m->m_pkthdrM_dat.MH.MH_pkthdr.ph_ifidx); | |||
931 | if (ifp == NULL((void *)0)) { | |||
932 | m_freem(m); | |||
933 | continue; | |||
934 | } | |||
935 | ||||
936 | bridge_process(ifp, m); | |||
937 | ||||
938 | if_put(ifp); | |||
939 | } | |||
940 | KERNEL_UNLOCK()_kernel_unlock(); | |||
941 | } | |||
942 | ||||
943 | /* | |||
944 | * Process a single frame. Frame must be freed or queued before returning. | |||
945 | */ | |||
946 | void | |||
947 | bridgeintr_frame(struct ifnet *brifp, struct ifnet *src_if, struct mbuf *m) | |||
948 | { | |||
949 | struct bridge_softc *sc = brifp->if_softc; | |||
950 | struct ifnet *dst_if = NULL((void *)0); | |||
951 | struct bridge_iflist *bif; | |||
952 | struct ether_addr *dst, *src; | |||
953 | struct ether_header eh; | |||
954 | unsigned int dst_ifidx; | |||
955 | u_int32_t protected; | |||
956 | int len; | |||
957 | ||||
958 | ||||
959 | sc->sc_if.if_ipacketsif_data.ifi_ipackets++; | |||
960 | sc->sc_if.if_ibytesif_data.ifi_ibytes += m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
961 | ||||
962 | bif = bridge_getbif(src_if); | |||
963 | KASSERT(bif != NULL)((bif != ((void *)0)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/net/if_bridge.c" , 963, "bif != NULL")); | |||
964 | ||||
965 | m_copydata(m, 0, ETHER_HDR_LEN((6 * 2) + 2), &eh); | |||
966 | dst = (struct ether_addr *)&eh.ether_dhost[0]; | |||
967 | src = (struct ether_addr *)&eh.ether_shost[0]; | |||
968 | ||||
969 | /* | |||
970 | * If interface is learning, and if source address | |||
971 | * is not broadcast or multicast, record its address. | |||
972 | */ | |||
973 | if ((bif->bif_flags & IFBIF_LEARNING0x0001) && | |||
974 | !ETHER_IS_MULTICAST(eh.ether_shost)(*(eh.ether_shost) & 0x01) && | |||
975 | !ETHER_IS_ANYADDR(eh.ether_shost)(((eh.ether_shost)[0] | (eh.ether_shost)[1] | (eh.ether_shost )[2] | (eh.ether_shost)[3] | (eh.ether_shost)[4] | (eh.ether_shost )[5]) == 0x00)) | |||
976 | bridge_rtupdate(sc, src, src_if, 0, IFBAF_DYNAMIC0x00, m); | |||
977 | ||||
978 | if ((bif->bif_flags & IFBIF_STP0x0008) && | |||
979 | (bif->bif_statebif_stp->bp_state == BSTP_IFSTATE_LEARNING2)) { | |||
980 | m_freem(m); | |||
981 | return; | |||
982 | } | |||
983 | ||||
984 | /* | |||
985 | * At this point, the port either doesn't participate in stp or | |||
986 | * it's in the forwarding state | |||
987 | */ | |||
988 | ||||
989 | /* | |||
990 | * If packet is unicast, destined for someone on "this" | |||
991 | * side of the bridge, drop it. | |||
992 | */ | |||
993 | if (!ETHER_IS_MULTICAST(eh.ether_dhost)(*(eh.ether_dhost) & 0x01)) { | |||
994 | dst_ifidx = bridge_rtlookup(brifp, dst, NULL((void *)0)); | |||
995 | if (dst_ifidx == src_if->if_index) { | |||
996 | m_freem(m); | |||
997 | return; | |||
998 | } | |||
999 | } else { | |||
1000 | if (ETHER_IS_BROADCAST(eh.ether_dhost)(((eh.ether_dhost)[0] & (eh.ether_dhost)[1] & (eh.ether_dhost )[2] & (eh.ether_dhost)[3] & (eh.ether_dhost)[4] & (eh.ether_dhost)[5]) == 0xff)) | |||
1001 | m->m_flagsm_hdr.mh_flags |= M_BCAST0x0100; | |||
1002 | else | |||
1003 | m->m_flagsm_hdr.mh_flags |= M_MCAST0x0200; | |||
1004 | } | |||
1005 | ||||
1006 | /* | |||
1007 | * Multicast packets get handled a little differently: | |||
1008 | * If interface is: | |||
1009 | * -link0,-link1 (default) Forward all multicast | |||
1010 | * as broadcast. | |||
1011 | * -link0,link1 Drop non-IP multicast, forward | |||
1012 | * as broadcast IP multicast. | |||
1013 | * link0,-link1 Drop IP multicast, forward as | |||
1014 | * broadcast non-IP multicast. | |||
1015 | * link0,link1 Drop all multicast. | |||
1016 | */ | |||
1017 | if (m->m_flagsm_hdr.mh_flags & M_MCAST0x0200) { | |||
1018 | if ((sc->sc_if.if_flags & | |||
1019 | (IFF_LINK00x1000 | IFF_LINK10x2000)) == | |||
1020 | (IFF_LINK00x1000 | IFF_LINK10x2000)) { | |||
1021 | m_freem(m); | |||
1022 | return; | |||
1023 | } | |||
1024 | if (sc->sc_if.if_flags & IFF_LINK00x1000 && | |||
1025 | ETHERADDR_IS_IP_MCAST(dst)((dst)->ether_addr_octet[0] == 0x01 && (dst)->ether_addr_octet [1] == 0x00 && (dst)->ether_addr_octet[2] == 0x5e)) { | |||
1026 | m_freem(m); | |||
1027 | return; | |||
1028 | } | |||
1029 | if (sc->sc_if.if_flags & IFF_LINK10x2000 && | |||
1030 | !ETHERADDR_IS_IP_MCAST(dst)((dst)->ether_addr_octet[0] == 0x01 && (dst)->ether_addr_octet [1] == 0x00 && (dst)->ether_addr_octet[2] == 0x5e)) { | |||
1031 | m_freem(m); | |||
1032 | return; | |||
1033 | } | |||
1034 | } | |||
1035 | ||||
1036 | if (bif->bif_flags & IFBIF_BLOCKNONIP0x0004 && bridge_blocknonip(&eh, m)) { | |||
1037 | m_freem(m); | |||
1038 | return; | |||
1039 | } | |||
1040 | ||||
1041 | if (bridge_filterrule(&bif->bif_brlin, &eh, m) == BRL_ACTION_BLOCK0x01) { | |||
1042 | m_freem(m); | |||
1043 | return; | |||
1044 | } | |||
1045 | m = bridge_ip(&sc->sc_if, BRIDGE_INPF_IN, src_if, &eh, m); | |||
1046 | if (m
| |||
1047 | return; | |||
1048 | /* | |||
1049 | * If the packet is a multicast or broadcast OR if we don't | |||
1050 | * know any better, forward it to all interfaces. | |||
1051 | */ | |||
1052 | if ((m->m_flagsm_hdr.mh_flags & (M_BCAST0x0100 | M_MCAST0x0200)) || dst_ifidx == 0) { | |||
| ||||
1053 | sc->sc_if.if_imcastsif_data.ifi_imcasts++; | |||
1054 | bridge_broadcast(sc, src_if, &eh, m); | |||
1055 | return; | |||
1056 | } | |||
1057 | protected = bif->bif_protected; | |||
1058 | ||||
1059 | dst_if = if_get(dst_ifidx); | |||
1060 | if (dst_if == NULL((void *)0)) | |||
1061 | goto bad; | |||
1062 | ||||
1063 | /* | |||
1064 | * At this point, we're dealing with a unicast frame going to a | |||
1065 | * different interface | |||
1066 | */ | |||
1067 | if (!ISSET(dst_if->if_flags, IFF_RUNNING)((dst_if->if_flags) & (0x40))) | |||
1068 | goto bad; | |||
1069 | bif = bridge_getbif(dst_if); | |||
1070 | if ((bif == NULL((void *)0)) || ((bif->bif_flags & IFBIF_STP0x0008) && | |||
1071 | (bif->bif_statebif_stp->bp_state == BSTP_IFSTATE_DISCARDING5))) | |||
1072 | goto bad; | |||
1073 | /* | |||
1074 | * Do not transmit if both ports are part of the same protected | |||
1075 | * domain. | |||
1076 | */ | |||
1077 | if (protected != 0 && (protected & bif->bif_protected)) | |||
1078 | goto bad; | |||
1079 | if (bridge_filterrule(&bif->bif_brlout, &eh, m) == BRL_ACTION_BLOCK0x01) | |||
1080 | goto bad; | |||
1081 | m = bridge_ip(&sc->sc_if, BRIDGE_OUTPF_OUT, dst_if, &eh, m); | |||
1082 | if (m == NULL((void *)0)) | |||
1083 | goto bad; | |||
1084 | ||||
1085 | len = m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
1086 | #if NVLAN1 > 0 | |||
1087 | if ((m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) && | |||
1088 | (dst_if->if_capabilitiesif_data.ifi_capabilities & IFCAP_VLAN_HWTAGGING0x00000020) == 0) | |||
1089 | len += ETHER_VLAN_ENCAP_LEN4; | |||
1090 | #endif | |||
1091 | if ((len - ETHER_HDR_LEN((6 * 2) + 2)) > dst_if->if_mtuif_data.ifi_mtu) | |||
1092 | bridge_fragment(&sc->sc_if, dst_if, &eh, m); | |||
1093 | else { | |||
1094 | bridge_ifenqueue(&sc->sc_if, dst_if, m); | |||
1095 | } | |||
1096 | m = NULL((void *)0); | |||
1097 | bad: | |||
1098 | if_put(dst_if); | |||
1099 | m_freem(m); | |||
1100 | } | |||
1101 | ||||
1102 | /* | |||
1103 | * Return 1 if `ena' belongs to `bif', 0 otherwise. | |||
1104 | */ | |||
1105 | int | |||
1106 | bridge_ourether(struct ifnet *ifp, uint8_t *ena) | |||
1107 | { | |||
1108 | struct arpcom *ac = (struct arpcom *)ifp; | |||
1109 | ||||
1110 | if (memcmp(ac->ac_enaddr, ena, ETHER_ADDR_LEN)__builtin_memcmp((ac->ac_enaddr), (ena), (6)) == 0) | |||
1111 | return (1); | |||
1112 | ||||
1113 | #if NCARP1 > 0 | |||
1114 | if (carp_ourether(ifp, ena)) | |||
1115 | return (1); | |||
1116 | #endif | |||
1117 | ||||
1118 | return (0); | |||
1119 | } | |||
1120 | ||||
1121 | /* | |||
1122 | * Receive input from an interface. Queue the packet for bridging if its | |||
1123 | * not for us, and schedule an interrupt. | |||
1124 | */ | |||
1125 | struct mbuf * | |||
1126 | bridge_input(struct ifnet *ifp, struct mbuf *m, uint64_t dst, void *null) | |||
1127 | { | |||
1128 | KASSERT(m->m_flags & M_PKTHDR)((m->m_hdr.mh_flags & 0x0002) ? (void)0 : __assert("diagnostic " , "/usr/src/sys/net/if_bridge.c", 1128, "m->m_flags & M_PKTHDR" )); | |||
1129 | ||||
1130 | if (m->m_flagsm_hdr.mh_flags & M_PROTO10x0010) { | |||
1131 | m->m_flagsm_hdr.mh_flags &= ~M_PROTO10x0010; | |||
1132 | return (m); | |||
1133 | } | |||
1134 | ||||
1135 | niq_enqueue(&bridgeintrq, m); | |||
1136 | ||||
1137 | return (NULL((void *)0)); | |||
1138 | } | |||
1139 | ||||
1140 | void | |||
1141 | bridge_process(struct ifnet *ifp, struct mbuf *m) | |||
1142 | { | |||
1143 | struct ifnet *brifp; | |||
1144 | struct bridge_softc *sc; | |||
1145 | struct bridge_iflist *bif = NULL((void *)0), *bif0 = NULL((void *)0); | |||
1146 | struct ether_header *eh; | |||
1147 | struct mbuf *mc; | |||
1148 | #if NBPFILTER1 > 0 | |||
1149 | caddr_t if_bpf; | |||
1150 | #endif | |||
1151 | ||||
1152 | KERNEL_ASSERT_LOCKED()((_kernel_lock_held()) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/net/if_bridge.c" , 1152, "_kernel_lock_held()")); | |||
1153 | ||||
1154 | brifp = if_get(ifp->if_bridgeidx); | |||
1155 | if ((brifp == NULL((void *)0)) || !ISSET(brifp->if_flags, IFF_RUNNING)((brifp->if_flags) & (0x40))) | |||
1156 | goto reenqueue; | |||
1157 | ||||
1158 | if (m->m_pkthdrM_dat.MH.MH_pkthdr.len < sizeof(*eh)) | |||
1159 | goto bad; | |||
1160 | ||||
1161 | #if NVLAN1 > 0 | |||
1162 | /* | |||
1163 | * If the underlying interface removed the VLAN header itself, | |||
1164 | * add it back. | |||
1165 | */ | |||
1166 | if (ISSET(m->m_flags, M_VLANTAG)((m->m_hdr.mh_flags) & (0x0020))) { | |||
1167 | m = vlan_inject(m, ETHERTYPE_VLAN0x8100, m->m_pkthdrM_dat.MH.MH_pkthdr.ether_vtag); | |||
1168 | if (m == NULL((void *)0)) | |||
1169 | goto bad; | |||
1170 | } | |||
1171 | #endif | |||
1172 | ||||
1173 | #if NBPFILTER1 > 0 | |||
1174 | if_bpf = brifp->if_bpf; | |||
1175 | if (if_bpf) | |||
1176 | bpf_mtap_ether(if_bpf, m, BPF_DIRECTION_IN(1 << 0)); | |||
1177 | #endif | |||
1178 | ||||
1179 | eh = mtod(m, struct ether_header *)((struct ether_header *)((m)->m_hdr.mh_data)); | |||
1180 | ||||
1181 | sc = brifp->if_softc; | |||
1182 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
1183 | struct arpcom *ac = (struct arpcom *)bif->ifp; | |||
1184 | if (memcmp(ac->ac_enaddr, eh->ether_shost, ETHER_ADDR_LEN)__builtin_memcmp((ac->ac_enaddr), (eh->ether_shost), (6 )) == 0) | |||
1185 | goto bad; | |||
1186 | if (bif->ifp == ifp) | |||
1187 | bif0 = bif; | |||
1188 | } | |||
1189 | if (bif0
| |||
1190 | goto reenqueue; | |||
1191 | ||||
1192 | bridge_span(brifp, m); | |||
1193 | ||||
1194 | if (ETHER_IS_MULTICAST(eh->ether_dhost)(*(eh->ether_dhost) & 0x01)) { | |||
1195 | /* | |||
1196 | * Reserved destination MAC addresses (01:80:C2:00:00:0x) | |||
1197 | * should not be forwarded to bridge members according to | |||
1198 | * section 7.12.6 of the 802.1D-2004 specification. The | |||
1199 | * STP destination address (as stored in bstp_etheraddr) | |||
1200 | * is the first of these. | |||
1201 | */ | |||
1202 | if (memcmp(eh->ether_dhost, bstp_etheraddr,__builtin_memcmp((eh->ether_dhost), (bstp_etheraddr), (6 - 1)) | |||
1203 | ETHER_ADDR_LEN - 1)__builtin_memcmp((eh->ether_dhost), (bstp_etheraddr), (6 - 1)) == 0) { | |||
1204 | if (eh->ether_dhost[ETHER_ADDR_LEN6 - 1] == 0) { | |||
1205 | /* STP traffic */ | |||
1206 | m = bstp_input(sc->sc_stp, bif0->bif_stp, eh, | |||
1207 | m); | |||
1208 | if (m == NULL((void *)0)) | |||
1209 | goto bad; | |||
1210 | } else if (eh->ether_dhost[ETHER_ADDR_LEN6 - 1] <= 0xf) | |||
1211 | goto bad; | |||
1212 | } | |||
1213 | ||||
1214 | /* | |||
1215 | * No need to process frames for ifs in the discarding state | |||
1216 | */ | |||
1217 | if ((bif0->bif_flags & IFBIF_STP0x0008) && | |||
1218 | (bif0->bif_statebif_stp->bp_state == BSTP_IFSTATE_DISCARDING5)) | |||
1219 | goto reenqueue; | |||
1220 | ||||
1221 | mc = m_dup_pkt(m, ETHER_ALIGN2, M_NOWAIT0x0002); | |||
1222 | if (mc == NULL((void *)0)) | |||
1223 | goto reenqueue; | |||
1224 | ||||
1225 | bridge_ifinput(ifp, mc); | |||
1226 | ||||
1227 | bridgeintr_frame(brifp, ifp, m); | |||
1228 | if_put(brifp); | |||
1229 | return; | |||
1230 | } | |||
1231 | ||||
1232 | /* | |||
1233 | * Unicast, make sure it's not for us. | |||
1234 | */ | |||
1235 | if (bridge_ourether(bif0->ifp, eh->ether_dhost)) { | |||
1236 | bif = bif0; | |||
1237 | } else { | |||
1238 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
1239 | if (bif->ifp == ifp) | |||
1240 | continue; | |||
1241 | if (bridge_ourether(bif->ifp, eh->ether_dhost)) | |||
1242 | break; | |||
1243 | } | |||
1244 | } | |||
1245 | if (bif != NULL((void *)0)) { | |||
1246 | if (bif0->bif_flags & IFBIF_LEARNING0x0001) | |||
1247 | bridge_rtupdate(sc, | |||
1248 | (struct ether_addr *)&eh->ether_shost, | |||
1249 | ifp, 0, IFBAF_DYNAMIC0x00, m); | |||
1250 | if (bridge_filterrule(&bif0->bif_brlin, eh, m) == | |||
1251 | BRL_ACTION_BLOCK0x01) { | |||
1252 | goto bad; | |||
1253 | } | |||
1254 | ||||
1255 | /* Count for the bridge */ | |||
1256 | brifp->if_ipacketsif_data.ifi_ipackets++; | |||
1257 | brifp->if_ibytesif_data.ifi_ibytes += m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
1258 | ||||
1259 | ifp = bif->ifp; | |||
1260 | goto reenqueue; | |||
1261 | } | |||
1262 | ||||
1263 | bridgeintr_frame(brifp, ifp, m); | |||
1264 | if_put(brifp); | |||
1265 | return; | |||
1266 | ||||
1267 | reenqueue: | |||
1268 | bridge_ifinput(ifp, m); | |||
1269 | m = NULL((void *)0); | |||
1270 | bad: | |||
1271 | m_freem(m); | |||
1272 | if_put(brifp); | |||
1273 | } | |||
1274 | ||||
1275 | /* | |||
1276 | * Send a frame to all interfaces that are members of the bridge | |||
1277 | * (except the one it came in on). | |||
1278 | */ | |||
1279 | void | |||
1280 | bridge_broadcast(struct bridge_softc *sc, struct ifnet *ifp, | |||
1281 | struct ether_header *eh, struct mbuf *m) | |||
1282 | { | |||
1283 | struct bridge_iflist *bif; | |||
1284 | struct mbuf *mc; | |||
1285 | struct ifnet *dst_if; | |||
1286 | int len, used = 0; | |||
1287 | u_int32_t protected; | |||
1288 | ||||
1289 | bif = bridge_getbif(ifp); | |||
1290 | KASSERT(bif != NULL)((bif != ((void *)0)) ? (void)0 : __assert("diagnostic ", "/usr/src/sys/net/if_bridge.c" , 1290, "bif != NULL")); | |||
1291 | protected = bif->bif_protected; | |||
1292 | ||||
1293 | SMR_SLIST_FOREACH_LOCKED(bif, &sc->sc_iflist, bif_next)for ((bif) = (*(&(&sc->sc_iflist)->smr_slh_first )); (bif) != ((void *)0); (bif) = (*(&(bif)->bif_next. smr_sle_next))) { | |||
1294 | dst_if = bif->ifp; | |||
1295 | ||||
1296 | if ((dst_if->if_flags & IFF_RUNNING0x40) == 0) | |||
1297 | continue; | |||
1298 | ||||
1299 | if ((bif->bif_flags & IFBIF_STP0x0008) && | |||
1300 | (bif->bif_statebif_stp->bp_state == BSTP_IFSTATE_DISCARDING5)) | |||
1301 | continue; | |||
1302 | ||||
1303 | if ((bif->bif_flags & IFBIF_DISCOVER0x0002) == 0 && | |||
1304 | (m->m_flagsm_hdr.mh_flags & (M_BCAST0x0100 | M_MCAST0x0200)) == 0) | |||
1305 | continue; | |||
1306 | ||||
1307 | /* Drop non-IP frames if the appropriate flag is set. */ | |||
1308 | if (bif->bif_flags & IFBIF_BLOCKNONIP0x0004 && | |||
1309 | bridge_blocknonip(eh, m)) | |||
1310 | continue; | |||
1311 | ||||
1312 | /* | |||
1313 | * Do not transmit if both ports are part of the same | |||
1314 | * protected domain. | |||
1315 | */ | |||
1316 | if (protected != 0 && (protected & bif->bif_protected)) | |||
1317 | continue; | |||
1318 | ||||
1319 | if (bridge_filterrule(&bif->bif_brlout, eh, m) == | |||
1320 | BRL_ACTION_BLOCK0x01) | |||
1321 | continue; | |||
1322 | ||||
1323 | /* | |||
1324 | * Don't retransmit out of the same interface where | |||
1325 | * the packet was received from. | |||
1326 | */ | |||
1327 | if (dst_if->if_index == ifp->if_index) | |||
1328 | continue; | |||
1329 | ||||
1330 | if (bridge_localbroadcast(dst_if, eh, m)) | |||
1331 | sc->sc_if.if_oerrorsif_data.ifi_oerrors++; | |||
1332 | ||||
1333 | /* If last one, reuse the passed-in mbuf */ | |||
1334 | if (SMR_SLIST_NEXT_LOCKED(bif, bif_next)(*(&(bif)->bif_next.smr_sle_next)) == NULL((void *)0)) { | |||
1335 | mc = m; | |||
1336 | used = 1; | |||
1337 | } else { | |||
1338 | mc = m_dup_pkt(m, ETHER_ALIGN2, M_NOWAIT0x0002); | |||
1339 | if (mc == NULL((void *)0)) { | |||
1340 | sc->sc_if.if_oerrorsif_data.ifi_oerrors++; | |||
1341 | continue; | |||
1342 | } | |||
1343 | } | |||
1344 | ||||
1345 | mc = bridge_ip(&sc->sc_if, BRIDGE_OUTPF_OUT, dst_if, eh, mc); | |||
1346 | if (mc == NULL((void *)0)) | |||
1347 | continue; | |||
1348 | ||||
1349 | len = mc->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
1350 | #if NVLAN1 > 0 | |||
1351 | if ((mc->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) && | |||
1352 | (dst_if->if_capabilitiesif_data.ifi_capabilities & IFCAP_VLAN_HWTAGGING0x00000020) == 0) | |||
1353 | len += ETHER_VLAN_ENCAP_LEN4; | |||
1354 | #endif | |||
1355 | if ((len - ETHER_HDR_LEN((6 * 2) + 2)) > dst_if->if_mtuif_data.ifi_mtu) | |||
1356 | bridge_fragment(&sc->sc_if, dst_if, eh, mc); | |||
1357 | else { | |||
1358 | bridge_ifenqueue(&sc->sc_if, dst_if, mc); | |||
1359 | } | |||
1360 | } | |||
1361 | ||||
1362 | if (!used) | |||
1363 | m_freem(m); | |||
1364 | } | |||
1365 | ||||
1366 | int | |||
1367 | bridge_localbroadcast(struct ifnet *ifp, struct ether_header *eh, | |||
1368 | struct mbuf *m) | |||
1369 | { | |||
1370 | struct mbuf *m1; | |||
1371 | u_int16_t etype; | |||
1372 | ||||
1373 | /* | |||
1374 | * quick optimisation, don't send packets up the stack if no | |||
1375 | * corresponding address has been specified. | |||
1376 | */ | |||
1377 | etype = ntohs(eh->ether_type)(__uint16_t)(__builtin_constant_p(eh->ether_type) ? (__uint16_t )(((__uint16_t)(eh->ether_type) & 0xffU) << 8 | ( (__uint16_t)(eh->ether_type) & 0xff00U) >> 8) : __swap16md (eh->ether_type)); | |||
1378 | if (!(m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) && etype == ETHERTYPE_IP0x0800) { | |||
1379 | struct ifaddr *ifa; | |||
1380 | TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)for((ifa) = ((&ifp->if_addrlist)->tqh_first); (ifa) != ((void *)0); (ifa) = ((ifa)->ifa_list.tqe_next)) { | |||
1381 | if (ifa->ifa_addr->sa_family == AF_INET2) | |||
1382 | break; | |||
1383 | } | |||
1384 | if (ifa == NULL((void *)0)) | |||
1385 | return (0); | |||
1386 | } | |||
1387 | ||||
1388 | m1 = m_dup_pkt(m, ETHER_ALIGN2, M_NOWAIT0x0002); | |||
1389 | if (m1 == NULL((void *)0)) | |||
1390 | return (1); | |||
1391 | ||||
1392 | #if NPF1 > 0 | |||
1393 | pf_pkt_addr_changed(m1); | |||
1394 | #endif /* NPF */ | |||
1395 | ||||
1396 | bridge_ifinput(ifp, m1); | |||
1397 | ||||
1398 | return (0); | |||
1399 | } | |||
1400 | ||||
1401 | void | |||
1402 | bridge_span(struct ifnet *brifp, struct mbuf *m) | |||
1403 | { | |||
1404 | struct bridge_softc *sc = brifp->if_softc; | |||
1405 | struct bridge_iflist *bif; | |||
1406 | struct ifnet *ifp; | |||
1407 | struct mbuf *mc; | |||
1408 | int error; | |||
1409 | ||||
1410 | smr_read_enter(); | |||
1411 | SMR_SLIST_FOREACH(bif, &sc->sc_spanlist, bif_next)for ((bif) = ({ typeof(*&(&sc->sc_spanlist)->smr_slh_first ) __tmp = *(volatile typeof(*&(&sc->sc_spanlist)-> smr_slh_first) *)&(*&(&sc->sc_spanlist)->smr_slh_first ); membar_datadep_consumer(); __tmp; }); (bif) != ((void *)0) ; (bif) = ({ typeof(*&(bif)->bif_next.smr_sle_next) __tmp = *(volatile typeof(*&(bif)->bif_next.smr_sle_next) * )&(*&(bif)->bif_next.smr_sle_next); membar_datadep_consumer (); __tmp; })) { | |||
1412 | ifp = bif->ifp; | |||
1413 | ||||
1414 | if ((ifp->if_flags & IFF_RUNNING0x40) == 0) | |||
1415 | continue; | |||
1416 | ||||
1417 | mc = m_copym(m, 0, M_COPYALL1000000000, M_DONTWAIT0x0002); | |||
1418 | if (mc == NULL((void *)0)) { | |||
1419 | brifp->if_oerrorsif_data.ifi_oerrors++; | |||
1420 | continue; | |||
1421 | } | |||
1422 | ||||
1423 | error = bridge_ifenqueue(brifp, ifp, mc); | |||
1424 | if (error) | |||
1425 | continue; | |||
1426 | } | |||
1427 | smr_read_leave(); | |||
1428 | } | |||
1429 | ||||
1430 | /* | |||
1431 | * Block non-ip frames: | |||
1432 | * Returns 0 if frame is ip, and 1 if it should be dropped. | |||
1433 | */ | |||
1434 | int | |||
1435 | bridge_blocknonip(struct ether_header *eh, struct mbuf *m) | |||
1436 | { | |||
1437 | struct llc llc; | |||
1438 | u_int16_t etype; | |||
1439 | ||||
1440 | if (m->m_pkthdrM_dat.MH.MH_pkthdr.len < ETHER_HDR_LEN((6 * 2) + 2)) | |||
1441 | return (1); | |||
1442 | ||||
1443 | #if NVLAN1 > 0 | |||
1444 | if (m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) | |||
1445 | return (1); | |||
1446 | #endif | |||
1447 | ||||
1448 | etype = ntohs(eh->ether_type)(__uint16_t)(__builtin_constant_p(eh->ether_type) ? (__uint16_t )(((__uint16_t)(eh->ether_type) & 0xffU) << 8 | ( (__uint16_t)(eh->ether_type) & 0xff00U) >> 8) : __swap16md (eh->ether_type)); | |||
1449 | switch (etype) { | |||
1450 | case ETHERTYPE_ARP0x0806: | |||
1451 | case ETHERTYPE_REVARP0x8035: | |||
1452 | case ETHERTYPE_IP0x0800: | |||
1453 | case ETHERTYPE_IPV60x86DD: | |||
1454 | return (0); | |||
1455 | } | |||
1456 | ||||
1457 | if (etype > ETHERMTU(1518 - ((6 * 2) + 2) - 4)) | |||
1458 | return (1); | |||
1459 | ||||
1460 | if (m->m_pkthdrM_dat.MH.MH_pkthdr.len < | |||
1461 | (ETHER_HDR_LEN((6 * 2) + 2) + LLC_SNAPFRAMELEN8)) | |||
1462 | return (1); | |||
1463 | ||||
1464 | m_copydata(m, ETHER_HDR_LEN((6 * 2) + 2), LLC_SNAPFRAMELEN8, &llc); | |||
1465 | ||||
1466 | etype = ntohs(llc.llc_snap.ether_type)(__uint16_t)(__builtin_constant_p(llc.llc_un.type_snap.ether_type ) ? (__uint16_t)(((__uint16_t)(llc.llc_un.type_snap.ether_type ) & 0xffU) << 8 | ((__uint16_t)(llc.llc_un.type_snap .ether_type) & 0xff00U) >> 8) : __swap16md(llc.llc_un .type_snap.ether_type)); | |||
1467 | if (llc.llc_dsap == LLC_SNAP_LSAP0xaa && | |||
1468 | llc.llc_ssap == LLC_SNAP_LSAP0xaa && | |||
1469 | llc.llc_controlllc_un.type_u.control == LLC_UI0x3 && | |||
1470 | llc.llc_snapllc_un.type_snap.org_code[0] == 0 && | |||
1471 | llc.llc_snapllc_un.type_snap.org_code[1] == 0 && | |||
1472 | llc.llc_snapllc_un.type_snap.org_code[2] == 0 && | |||
1473 | (etype == ETHERTYPE_ARP0x0806 || etype == ETHERTYPE_REVARP0x8035 || | |||
1474 | etype == ETHERTYPE_IP0x0800 || etype == ETHERTYPE_IPV60x86DD)) { | |||
1475 | return (0); | |||
1476 | } | |||
1477 | ||||
1478 | return (1); | |||
1479 | } | |||
1480 | ||||
1481 | #ifdef IPSEC1 | |||
1482 | int | |||
1483 | bridge_ipsec(struct ifnet *ifp, struct ether_header *eh, int hassnap, | |||
1484 | struct llc *llc, int dir, int af, int hlen, struct mbuf *m) | |||
1485 | { | |||
1486 | union sockaddr_union dst; | |||
1487 | struct tdb *tdb; | |||
1488 | u_int32_t spi; | |||
1489 | u_int16_t cpi; | |||
1490 | int error, off, prot; | |||
1491 | u_int8_t proto = 0; | |||
1492 | struct ip *ip; | |||
1493 | #ifdef INET61 | |||
1494 | struct ip6_hdr *ip6; | |||
1495 | #endif /* INET6 */ | |||
1496 | #if NPF1 > 0 | |||
1497 | struct ifnet *encif; | |||
1498 | #endif | |||
1499 | ||||
1500 | if (dir == BRIDGE_INPF_IN) { | |||
1501 | switch (af) { | |||
1502 | case AF_INET2: | |||
1503 | if (m->m_pkthdrM_dat.MH.MH_pkthdr.len - hlen < 2 * sizeof(u_int32_t)) | |||
1504 | goto skiplookup; | |||
1505 | ||||
1506 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1507 | proto = ip->ip_p; | |||
1508 | off = offsetof(struct ip, ip_p)__builtin_offsetof(struct ip, ip_p); | |||
1509 | ||||
1510 | if (proto != IPPROTO_ESP50 && proto != IPPROTO_AH51 && | |||
1511 | proto != IPPROTO_IPCOMP108) | |||
1512 | goto skiplookup; | |||
1513 | ||||
1514 | bzero(&dst, sizeof(union sockaddr_union))__builtin_bzero((&dst), (sizeof(union sockaddr_union))); | |||
1515 | dst.sa.sa_family = AF_INET2; | |||
1516 | dst.sin.sin_len = sizeof(struct sockaddr_in); | |||
1517 | m_copydata(m, offsetof(struct ip, ip_dst)__builtin_offsetof(struct ip, ip_dst), | |||
1518 | sizeof(struct in_addr), &dst.sin.sin_addr); | |||
1519 | ||||
1520 | break; | |||
1521 | #ifdef INET61 | |||
1522 | case AF_INET624: | |||
1523 | if (m->m_pkthdrM_dat.MH.MH_pkthdr.len - hlen < 2 * sizeof(u_int32_t)) | |||
1524 | goto skiplookup; | |||
1525 | ||||
1526 | ip6 = mtod(m, struct ip6_hdr *)((struct ip6_hdr *)((m)->m_hdr.mh_data)); | |||
1527 | ||||
1528 | /* XXX We should chase down the header chain */ | |||
1529 | proto = ip6->ip6_nxtip6_ctlun.ip6_un1.ip6_un1_nxt; | |||
1530 | off = offsetof(struct ip6_hdr, ip6_nxt)__builtin_offsetof(struct ip6_hdr, ip6_ctlun.ip6_un1.ip6_un1_nxt ); | |||
1531 | ||||
1532 | if (proto != IPPROTO_ESP50 && proto != IPPROTO_AH51 && | |||
1533 | proto != IPPROTO_IPCOMP108) | |||
1534 | goto skiplookup; | |||
1535 | ||||
1536 | bzero(&dst, sizeof(union sockaddr_union))__builtin_bzero((&dst), (sizeof(union sockaddr_union))); | |||
1537 | dst.sa.sa_family = AF_INET624; | |||
1538 | dst.sin6.sin6_len = sizeof(struct sockaddr_in6); | |||
1539 | m_copydata(m, offsetof(struct ip6_hdr, ip6_dst)__builtin_offsetof(struct ip6_hdr, ip6_dst), | |||
1540 | sizeof(struct in6_addr), &dst.sin6.sin6_addr); | |||
1541 | ||||
1542 | break; | |||
1543 | #endif /* INET6 */ | |||
1544 | default: | |||
1545 | return (0); | |||
1546 | } | |||
1547 | ||||
1548 | switch (proto) { | |||
1549 | case IPPROTO_ESP50: | |||
1550 | m_copydata(m, hlen, sizeof(u_int32_t), &spi); | |||
1551 | break; | |||
1552 | case IPPROTO_AH51: | |||
1553 | m_copydata(m, hlen + sizeof(u_int32_t), | |||
1554 | sizeof(u_int32_t), &spi); | |||
1555 | break; | |||
1556 | case IPPROTO_IPCOMP108: | |||
1557 | m_copydata(m, hlen + sizeof(u_int16_t), | |||
1558 | sizeof(u_int16_t), &cpi); | |||
1559 | spi = htonl(ntohs(cpi))(__uint32_t)(__builtin_constant_p((__uint16_t)(__builtin_constant_p (cpi) ? (__uint16_t)(((__uint16_t)(cpi) & 0xffU) << 8 | ((__uint16_t)(cpi) & 0xff00U) >> 8) : __swap16md (cpi))) ? (__uint32_t)(((__uint32_t)((__uint16_t)(__builtin_constant_p (cpi) ? (__uint16_t)(((__uint16_t)(cpi) & 0xffU) << 8 | ((__uint16_t)(cpi) & 0xff00U) >> 8) : __swap16md (cpi))) & 0xff) << 24 | ((__uint32_t)((__uint16_t)( __builtin_constant_p(cpi) ? (__uint16_t)(((__uint16_t)(cpi) & 0xffU) << 8 | ((__uint16_t)(cpi) & 0xff00U) >> 8) : __swap16md(cpi))) & 0xff00) << 8 | ((__uint32_t )((__uint16_t)(__builtin_constant_p(cpi) ? (__uint16_t)(((__uint16_t )(cpi) & 0xffU) << 8 | ((__uint16_t)(cpi) & 0xff00U ) >> 8) : __swap16md(cpi))) & 0xff0000) >> 8 | ((__uint32_t)((__uint16_t)(__builtin_constant_p(cpi) ? (__uint16_t )(((__uint16_t)(cpi) & 0xffU) << 8 | ((__uint16_t)( cpi) & 0xff00U) >> 8) : __swap16md(cpi))) & 0xff000000 ) >> 24) : __swap32md((__uint16_t)(__builtin_constant_p (cpi) ? (__uint16_t)(((__uint16_t)(cpi) & 0xffU) << 8 | ((__uint16_t)(cpi) & 0xff00U) >> 8) : __swap16md (cpi)))); | |||
1560 | break; | |||
1561 | } | |||
1562 | ||||
1563 | NET_ASSERT_LOCKED()do { int _s = rw_status(&netlock); if ((splassert_ctl > 0) && (_s != 0x0001UL && _s != 0x0002UL)) splassert_fail (0x0002UL, _s, __func__); } while (0); | |||
1564 | ||||
1565 | tdb = gettdb(ifp->if_rdomain, spi, &dst, proto)gettdb_dir((ifp->if_data.ifi_rdomain),(spi),(&dst),(proto ),0); | |||
1566 | if (tdb != NULL((void *)0) && (tdb->tdb_flags & TDBF_INVALID0x00010) == 0 && | |||
1567 | tdb->tdb_xform != NULL((void *)0)) { | |||
1568 | if (tdb->tdb_first_use == 0) { | |||
1569 | tdb->tdb_first_use = gettime(); | |||
1570 | if (tdb->tdb_flags & TDBF_FIRSTUSE0x00020) { | |||
1571 | if (timeout_add_sec( | |||
1572 | &tdb->tdb_first_tmo, | |||
1573 | tdb->tdb_exp_first_use)) | |||
1574 | tdb_ref(tdb); | |||
1575 | } | |||
1576 | if (tdb->tdb_flags & TDBF_SOFT_FIRSTUSE0x00400) { | |||
1577 | if (timeout_add_sec( | |||
1578 | &tdb->tdb_sfirst_tmo, | |||
1579 | tdb->tdb_soft_first_use)) | |||
1580 | tdb_ref(tdb); | |||
1581 | } | |||
1582 | } | |||
1583 | ||||
1584 | prot = (*(tdb->tdb_xform->xf_input))(&m, tdb, hlen, | |||
1585 | off); | |||
1586 | tdb_unref(tdb); | |||
1587 | if (prot != IPPROTO_DONE257) | |||
1588 | ip_deliver(&m, &hlen, prot, af); | |||
1589 | return (1); | |||
1590 | } else { | |||
1591 | tdb_unref(tdb); | |||
1592 | skiplookup: | |||
1593 | /* XXX do an input policy lookup */ | |||
1594 | return (0); | |||
1595 | } | |||
1596 | } else { /* Outgoing from the bridge. */ | |||
1597 | error = ipsp_spd_lookup(m, af, hlen, IPSP_DIRECTION_OUT0x2, | |||
1598 | NULL((void *)0), NULL((void *)0), &tdb, NULL((void *)0)); | |||
1599 | if (error == 0 && tdb != NULL((void *)0)) { | |||
1600 | /* | |||
1601 | * We don't need to do loop detection, the | |||
1602 | * bridge will do that for us. | |||
1603 | */ | |||
1604 | #if NPF1 > 0 | |||
1605 | if ((encif = enc_getif(tdb->tdb_rdomain, | |||
1606 | tdb->tdb_tap)) == NULL((void *)0) || | |||
1607 | pf_test(af, dir, encif, &m) != PF_PASS) { | |||
1608 | m_freem(m); | |||
1609 | tdb_unref(tdb); | |||
1610 | return (1); | |||
1611 | } | |||
1612 | if (m == NULL((void *)0)) { | |||
1613 | tdb_unref(tdb); | |||
1614 | return (1); | |||
1615 | } | |||
1616 | if (af == AF_INET2) | |||
1617 | in_proto_cksum_out(m, encif); | |||
1618 | #ifdef INET61 | |||
1619 | else if (af == AF_INET624) | |||
1620 | in6_proto_cksum_out(m, encif); | |||
1621 | #endif /* INET6 */ | |||
1622 | #endif /* NPF */ | |||
1623 | ||||
1624 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1625 | if ((af == AF_INET2) && | |||
1626 | ip_mtudisc && (ip->ip_off & htons(IP_DF)(__uint16_t)(__builtin_constant_p(0x4000) ? (__uint16_t)(((__uint16_t )(0x4000) & 0xffU) << 8 | ((__uint16_t)(0x4000) & 0xff00U) >> 8) : __swap16md(0x4000))) && | |||
1627 | tdb->tdb_mtu && ntohs(ip->ip_len)(__uint16_t)(__builtin_constant_p(ip->ip_len) ? (__uint16_t )(((__uint16_t)(ip->ip_len) & 0xffU) << 8 | ((__uint16_t )(ip->ip_len) & 0xff00U) >> 8) : __swap16md(ip-> ip_len)) > tdb->tdb_mtu && | |||
1628 | tdb->tdb_mtutimeout > gettime()) { | |||
1629 | bridge_send_icmp_err(ifp, eh, m, | |||
1630 | hassnap, llc, tdb->tdb_mtu, | |||
1631 | ICMP_UNREACH3, ICMP_UNREACH_NEEDFRAG4); | |||
1632 | } else { | |||
1633 | KERNEL_LOCK()_kernel_lock(); | |||
1634 | error = ipsp_process_packet(m, tdb, af, 0); | |||
1635 | KERNEL_UNLOCK()_kernel_unlock(); | |||
1636 | } | |||
1637 | tdb_unref(tdb); | |||
1638 | return (1); | |||
1639 | } else | |||
1640 | return (0); | |||
1641 | } | |||
1642 | ||||
1643 | return (0); | |||
1644 | } | |||
1645 | #endif /* IPSEC */ | |||
1646 | ||||
1647 | /* | |||
1648 | * Filter IP packets by peeking into the ethernet frame. This violates | |||
1649 | * the ISO model, but allows us to act as a IP filter at the data link | |||
1650 | * layer. As a result, most of this code will look familiar to those | |||
1651 | * who've read net/if_ethersubr.c and netinet/ip_input.c | |||
1652 | */ | |||
1653 | struct mbuf * | |||
1654 | bridge_ip(struct ifnet *brifp, int dir, struct ifnet *ifp, | |||
1655 | struct ether_header *eh, struct mbuf *m) | |||
1656 | { | |||
1657 | struct llc llc; | |||
1658 | int hassnap = 0; | |||
1659 | struct ip *ip; | |||
1660 | int hlen; | |||
1661 | u_int16_t etype; | |||
1662 | ||||
1663 | #if NVLAN1 > 0 | |||
1664 | if (m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) | |||
1665 | return (m); | |||
1666 | #endif | |||
1667 | ||||
1668 | etype = ntohs(eh->ether_type)(__uint16_t)(__builtin_constant_p(eh->ether_type) ? (__uint16_t )(((__uint16_t)(eh->ether_type) & 0xffU) << 8 | ( (__uint16_t)(eh->ether_type) & 0xff00U) >> 8) : __swap16md (eh->ether_type)); | |||
1669 | ||||
1670 | if (etype != ETHERTYPE_IP0x0800 && etype != ETHERTYPE_IPV60x86DD) { | |||
1671 | if (etype > ETHERMTU(1518 - ((6 * 2) + 2) - 4) || | |||
1672 | m->m_pkthdrM_dat.MH.MH_pkthdr.len < (LLC_SNAPFRAMELEN8 + | |||
1673 | ETHER_HDR_LEN((6 * 2) + 2))) | |||
1674 | return (m); | |||
1675 | ||||
1676 | m_copydata(m, ETHER_HDR_LEN((6 * 2) + 2), LLC_SNAPFRAMELEN8, &llc); | |||
1677 | ||||
1678 | if (llc.llc_dsap != LLC_SNAP_LSAP0xaa || | |||
1679 | llc.llc_ssap != LLC_SNAP_LSAP0xaa || | |||
1680 | llc.llc_controlllc_un.type_u.control != LLC_UI0x3 || | |||
1681 | llc.llc_snapllc_un.type_snap.org_code[0] || | |||
1682 | llc.llc_snapllc_un.type_snap.org_code[1] || | |||
1683 | llc.llc_snapllc_un.type_snap.org_code[2]) | |||
1684 | return (m); | |||
1685 | ||||
1686 | etype = ntohs(llc.llc_snap.ether_type)(__uint16_t)(__builtin_constant_p(llc.llc_un.type_snap.ether_type ) ? (__uint16_t)(((__uint16_t)(llc.llc_un.type_snap.ether_type ) & 0xffU) << 8 | ((__uint16_t)(llc.llc_un.type_snap .ether_type) & 0xff00U) >> 8) : __swap16md(llc.llc_un .type_snap.ether_type)); | |||
1687 | if (etype != ETHERTYPE_IP0x0800 && etype != ETHERTYPE_IPV60x86DD) | |||
1688 | return (m); | |||
1689 | hassnap = 1; | |||
1690 | } | |||
1691 | ||||
1692 | m_adj(m, ETHER_HDR_LEN((6 * 2) + 2)); | |||
1693 | if (hassnap) | |||
1694 | m_adj(m, LLC_SNAPFRAMELEN8); | |||
1695 | ||||
1696 | switch (etype) { | |||
1697 | ||||
1698 | case ETHERTYPE_IP0x0800: | |||
1699 | m = ipv4_check(ifp, m); | |||
1700 | if (m == NULL((void *)0)) | |||
1701 | return (NULL((void *)0)); | |||
1702 | ||||
1703 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1704 | hlen = ip->ip_hl << 2; | |||
1705 | ||||
1706 | #ifdef IPSEC1 | |||
1707 | if ((brifp->if_flags & IFF_LINK20x4000) == IFF_LINK20x4000 && | |||
1708 | bridge_ipsec(ifp, eh, hassnap, &llc, dir, AF_INET2, hlen, m)) | |||
1709 | return (NULL((void *)0)); | |||
1710 | #endif /* IPSEC */ | |||
1711 | #if NPF1 > 0 | |||
1712 | /* Finally, we get to filter the packet! */ | |||
1713 | if (pf_test(AF_INET2, dir, ifp, &m) != PF_PASS) | |||
1714 | goto dropit; | |||
1715 | if (m == NULL((void *)0)) | |||
1716 | goto dropit; | |||
1717 | #endif /* NPF > 0 */ | |||
1718 | ||||
1719 | /* Rebuild the IP header */ | |||
1720 | if (m->m_lenm_hdr.mh_len < hlen && ((m = m_pullup(m, hlen)) == NULL((void *)0))) | |||
1721 | return (NULL((void *)0)); | |||
1722 | if (m->m_lenm_hdr.mh_len < sizeof(struct ip)) | |||
1723 | goto dropit; | |||
1724 | in_proto_cksum_out(m, ifp); | |||
1725 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1726 | ip->ip_sum = 0; | |||
1727 | if (0 && (ifp->if_capabilitiesif_data.ifi_capabilities & IFCAP_CSUM_IPv40x00000001)) | |||
1728 | m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags |= M_IPV4_CSUM_OUT0x0001; | |||
1729 | else { | |||
1730 | ipstat_inc(ips_outswcsum); | |||
1731 | ip->ip_sum = in_cksum(m, hlen); | |||
1732 | } | |||
1733 | ||||
1734 | #if NPF1 > 0 | |||
1735 | if (dir == BRIDGE_INPF_IN && | |||
1736 | m->m_pkthdrM_dat.MH.MH_pkthdr.pf.flags & PF_TAG_DIVERTED0x08) { | |||
1737 | m_resethdr(m); | |||
1738 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_ifidx = ifp->if_index; | |||
1739 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_rtableid = ifp->if_rdomainif_data.ifi_rdomain; | |||
1740 | ipv4_input(ifp, m); | |||
1741 | return (NULL((void *)0)); | |||
1742 | } | |||
1743 | #endif /* NPF > 0 */ | |||
1744 | ||||
1745 | break; | |||
1746 | ||||
1747 | #ifdef INET61 | |||
1748 | case ETHERTYPE_IPV60x86DD: | |||
1749 | m = ipv6_check(ifp, m); | |||
1750 | if (m == NULL((void *)0)) | |||
1751 | return (NULL((void *)0)); | |||
1752 | ||||
1753 | #ifdef IPSEC1 | |||
1754 | hlen = sizeof(struct ip6_hdr); | |||
1755 | ||||
1756 | if ((brifp->if_flags & IFF_LINK20x4000) == IFF_LINK20x4000 && | |||
1757 | bridge_ipsec(ifp, eh, hassnap, &llc, dir, AF_INET624, hlen, | |||
1758 | m)) | |||
1759 | return (NULL((void *)0)); | |||
1760 | #endif /* IPSEC */ | |||
1761 | ||||
1762 | #if NPF1 > 0 | |||
1763 | if (pf_test(AF_INET624, dir, ifp, &m) != PF_PASS) | |||
1764 | goto dropit; | |||
1765 | if (m == NULL((void *)0)) | |||
1766 | return (NULL((void *)0)); | |||
1767 | #endif /* NPF > 0 */ | |||
1768 | in6_proto_cksum_out(m, ifp); | |||
1769 | ||||
1770 | #if NPF1 > 0 | |||
1771 | if (dir == BRIDGE_INPF_IN && | |||
1772 | m->m_pkthdrM_dat.MH.MH_pkthdr.pf.flags & PF_TAG_DIVERTED0x08) { | |||
1773 | m_resethdr(m); | |||
1774 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_ifidx = ifp->if_index; | |||
1775 | m->m_pkthdrM_dat.MH.MH_pkthdr.ph_rtableid = ifp->if_rdomainif_data.ifi_rdomain; | |||
1776 | ipv6_input(ifp, m); | |||
1777 | return (NULL((void *)0)); | |||
1778 | } | |||
1779 | #endif /* NPF > 0 */ | |||
1780 | ||||
1781 | break; | |||
1782 | #endif /* INET6 */ | |||
1783 | ||||
1784 | default: | |||
1785 | goto dropit; | |||
1786 | break; | |||
1787 | } | |||
1788 | ||||
1789 | /* Reattach SNAP header */ | |||
1790 | if (hassnap) { | |||
1791 | M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT)(m) = m_prepend((m), (8), (0x0002)); | |||
1792 | if (m == NULL((void *)0)) | |||
1793 | goto dropit; | |||
1794 | bcopy(&llc, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), LLC_SNAPFRAMELEN8); | |||
1795 | } | |||
1796 | ||||
1797 | /* Reattach ethernet header */ | |||
1798 | M_PREPEND(m, sizeof(*eh), M_DONTWAIT)(m) = m_prepend((m), (sizeof(*eh)), (0x0002)); | |||
1799 | if (m == NULL((void *)0)) | |||
1800 | goto dropit; | |||
1801 | bcopy(eh, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), sizeof(*eh)); | |||
1802 | ||||
1803 | return (m); | |||
1804 | ||||
1805 | dropit: | |||
1806 | m_freem(m); | |||
1807 | return (NULL((void *)0)); | |||
1808 | } | |||
1809 | ||||
1810 | void | |||
1811 | bridge_fragment(struct ifnet *brifp, struct ifnet *ifp, struct ether_header *eh, | |||
1812 | struct mbuf *m) | |||
1813 | { | |||
1814 | struct llc llc; | |||
1815 | struct mbuf_list fml; | |||
1816 | int error = 0; | |||
1817 | int hassnap = 0; | |||
1818 | u_int16_t etype; | |||
1819 | struct ip *ip; | |||
1820 | ||||
1821 | etype = ntohs(eh->ether_type)(__uint16_t)(__builtin_constant_p(eh->ether_type) ? (__uint16_t )(((__uint16_t)(eh->ether_type) & 0xffU) << 8 | ( (__uint16_t)(eh->ether_type) & 0xff00U) >> 8) : __swap16md (eh->ether_type)); | |||
1822 | #if NVLAN1 > 0 | |||
1823 | if ((m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) || etype == ETHERTYPE_VLAN0x8100 || | |||
1824 | etype == ETHERTYPE_QINQ0x88A8) { | |||
1825 | int len = m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
1826 | ||||
1827 | if (m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) | |||
1828 | len += ETHER_VLAN_ENCAP_LEN4; | |||
1829 | if ((ifp->if_capabilitiesif_data.ifi_capabilities & IFCAP_VLAN_MTU0x00000010) && | |||
1830 | (len - sizeof(struct ether_vlan_header) <= ifp->if_mtuif_data.ifi_mtu)) { | |||
1831 | bridge_ifenqueue(brifp, ifp, m); | |||
1832 | return; | |||
1833 | } | |||
1834 | goto dropit; | |||
1835 | } | |||
1836 | #endif | |||
1837 | if (etype != ETHERTYPE_IP0x0800) { | |||
1838 | if (etype > ETHERMTU(1518 - ((6 * 2) + 2) - 4) || | |||
1839 | m->m_pkthdrM_dat.MH.MH_pkthdr.len < (LLC_SNAPFRAMELEN8 + | |||
1840 | ETHER_HDR_LEN((6 * 2) + 2))) | |||
1841 | goto dropit; | |||
1842 | ||||
1843 | m_copydata(m, ETHER_HDR_LEN((6 * 2) + 2), LLC_SNAPFRAMELEN8, &llc); | |||
1844 | ||||
1845 | if (llc.llc_dsap != LLC_SNAP_LSAP0xaa || | |||
1846 | llc.llc_ssap != LLC_SNAP_LSAP0xaa || | |||
1847 | llc.llc_controlllc_un.type_u.control != LLC_UI0x3 || | |||
1848 | llc.llc_snapllc_un.type_snap.org_code[0] || | |||
1849 | llc.llc_snapllc_un.type_snap.org_code[1] || | |||
1850 | llc.llc_snapllc_un.type_snap.org_code[2] || | |||
1851 | llc.llc_snapllc_un.type_snap.ether_type != htons(ETHERTYPE_IP)(__uint16_t)(__builtin_constant_p(0x0800) ? (__uint16_t)(((__uint16_t )(0x0800) & 0xffU) << 8 | ((__uint16_t)(0x0800) & 0xff00U) >> 8) : __swap16md(0x0800))) | |||
1852 | goto dropit; | |||
1853 | ||||
1854 | hassnap = 1; | |||
1855 | } | |||
1856 | ||||
1857 | m_adj(m, ETHER_HDR_LEN((6 * 2) + 2)); | |||
1858 | if (hassnap) | |||
1859 | m_adj(m, LLC_SNAPFRAMELEN8); | |||
1860 | ||||
1861 | if (m->m_lenm_hdr.mh_len < sizeof(struct ip) && | |||
1862 | (m = m_pullup(m, sizeof(struct ip))) == NULL((void *)0)) | |||
1863 | goto dropit; | |||
1864 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1865 | ||||
1866 | /* Respect IP_DF, return a ICMP_UNREACH_NEEDFRAG. */ | |||
1867 | if (ip->ip_off & htons(IP_DF)(__uint16_t)(__builtin_constant_p(0x4000) ? (__uint16_t)(((__uint16_t )(0x4000) & 0xffU) << 8 | ((__uint16_t)(0x4000) & 0xff00U) >> 8) : __swap16md(0x4000))) { | |||
1868 | bridge_send_icmp_err(ifp, eh, m, hassnap, &llc, | |||
1869 | ifp->if_mtuif_data.ifi_mtu, ICMP_UNREACH3, ICMP_UNREACH_NEEDFRAG4); | |||
1870 | return; | |||
1871 | } | |||
1872 | ||||
1873 | error = ip_fragment(m, &fml, ifp, ifp->if_mtuif_data.ifi_mtu); | |||
1874 | if (error) | |||
1875 | return; | |||
1876 | ||||
1877 | while ((m = ml_dequeue(&fml)) != NULL((void *)0)) { | |||
1878 | if (hassnap) { | |||
1879 | M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT)(m) = m_prepend((m), (8), (0x0002)); | |||
1880 | if (m == NULL((void *)0)) { | |||
1881 | error = ENOBUFS55; | |||
1882 | break; | |||
1883 | } | |||
1884 | bcopy(&llc, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), LLC_SNAPFRAMELEN8); | |||
1885 | } | |||
1886 | M_PREPEND(m, sizeof(*eh), M_DONTWAIT)(m) = m_prepend((m), (sizeof(*eh)), (0x0002)); | |||
1887 | if (m == NULL((void *)0)) { | |||
1888 | error = ENOBUFS55; | |||
1889 | break; | |||
1890 | } | |||
1891 | bcopy(eh, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), sizeof(*eh)); | |||
1892 | error = bridge_ifenqueue(brifp, ifp, m); | |||
1893 | if (error) | |||
1894 | break; | |||
1895 | } | |||
1896 | if (error) | |||
1897 | ml_purge(&fml); | |||
1898 | else | |||
1899 | ipstat_inc(ips_fragmented); | |||
1900 | ||||
1901 | return; | |||
1902 | dropit: | |||
1903 | m_freem(m); | |||
1904 | } | |||
1905 | ||||
1906 | int | |||
1907 | bridge_ifenqueue(struct ifnet *brifp, struct ifnet *ifp, struct mbuf *m) | |||
1908 | { | |||
1909 | int error, len; | |||
1910 | ||||
1911 | /* Loop prevention. */ | |||
1912 | m->m_flagsm_hdr.mh_flags |= M_PROTO10x0010; | |||
1913 | ||||
1914 | len = m->m_pkthdrM_dat.MH.MH_pkthdr.len; | |||
1915 | ||||
1916 | error = if_enqueue(ifp, m); | |||
1917 | if (error) { | |||
1918 | brifp->if_oerrorsif_data.ifi_oerrors++; | |||
1919 | return (error); | |||
1920 | } | |||
1921 | ||||
1922 | brifp->if_opacketsif_data.ifi_opackets++; | |||
1923 | brifp->if_obytesif_data.ifi_obytes += len; | |||
1924 | ||||
1925 | return (0); | |||
1926 | } | |||
1927 | ||||
1928 | void | |||
1929 | bridge_ifinput(struct ifnet *ifp, struct mbuf *m) | |||
1930 | { | |||
1931 | struct mbuf_list ml = MBUF_LIST_INITIALIZER(){ ((void *)0), ((void *)0), 0 }; | |||
1932 | ||||
1933 | m->m_flagsm_hdr.mh_flags |= M_PROTO10x0010; | |||
1934 | ||||
1935 | ml_enqueue(&ml, m); | |||
1936 | if_input(ifp, &ml); | |||
1937 | } | |||
1938 | ||||
1939 | void | |||
1940 | bridge_send_icmp_err(struct ifnet *ifp, | |||
1941 | struct ether_header *eh, struct mbuf *n, int hassnap, struct llc *llc, | |||
1942 | int mtu, int type, int code) | |||
1943 | { | |||
1944 | struct ip *ip; | |||
1945 | struct icmp *icp; | |||
1946 | struct in_addr t; | |||
1947 | struct mbuf *m, *n2; | |||
1948 | int hlen; | |||
1949 | u_int8_t ether_tmp[ETHER_ADDR_LEN6]; | |||
1950 | ||||
1951 | n2 = m_copym(n, 0, M_COPYALL1000000000, M_DONTWAIT0x0002); | |||
1952 | if (!n2) { | |||
1953 | m_freem(n); | |||
1954 | return; | |||
1955 | } | |||
1956 | m = icmp_do_error(n, type, code, 0, mtu); | |||
1957 | if (m == NULL((void *)0)) { | |||
1958 | m_freem(n2); | |||
1959 | return; | |||
1960 | } | |||
1961 | ||||
1962 | n = n2; | |||
1963 | ||||
1964 | ip = mtod(m, struct ip *)((struct ip *)((m)->m_hdr.mh_data)); | |||
1965 | hlen = ip->ip_hl << 2; | |||
1966 | t = ip->ip_dst; | |||
1967 | ip->ip_dst = ip->ip_src; | |||
1968 | ip->ip_src = t; | |||
1969 | ||||
1970 | m->m_datam_hdr.mh_data += hlen; | |||
1971 | m->m_lenm_hdr.mh_len -= hlen; | |||
1972 | icp = mtod(m, struct icmp *)((struct icmp *)((m)->m_hdr.mh_data)); | |||
1973 | icp->icmp_cksum = 0; | |||
1974 | icp->icmp_cksum = in_cksum(m, ntohs(ip->ip_len)(__uint16_t)(__builtin_constant_p(ip->ip_len) ? (__uint16_t )(((__uint16_t)(ip->ip_len) & 0xffU) << 8 | ((__uint16_t )(ip->ip_len) & 0xff00U) >> 8) : __swap16md(ip-> ip_len)) - hlen); | |||
1975 | m->m_datam_hdr.mh_data -= hlen; | |||
1976 | m->m_lenm_hdr.mh_len += hlen; | |||
1977 | ||||
1978 | ip->ip_v = IPVERSION4; | |||
1979 | ip->ip_off &= htons(IP_DF)(__uint16_t)(__builtin_constant_p(0x4000) ? (__uint16_t)(((__uint16_t )(0x4000) & 0xffU) << 8 | ((__uint16_t)(0x4000) & 0xff00U) >> 8) : __swap16md(0x4000)); | |||
1980 | ip->ip_id = htons(ip_randomid())(__uint16_t)(__builtin_constant_p(ip_randomid()) ? (__uint16_t )(((__uint16_t)(ip_randomid()) & 0xffU) << 8 | ((__uint16_t )(ip_randomid()) & 0xff00U) >> 8) : __swap16md(ip_randomid ())); | |||
1981 | ip->ip_ttl = MAXTTL255; | |||
1982 | ip->ip_sum = 0; | |||
1983 | ip->ip_sum = in_cksum(m, hlen); | |||
1984 | ||||
1985 | /* Swap ethernet addresses */ | |||
1986 | bcopy(&eh->ether_dhost, ðer_tmp, sizeof(ether_tmp)); | |||
1987 | bcopy(&eh->ether_shost, &eh->ether_dhost, sizeof(ether_tmp)); | |||
1988 | bcopy(ðer_tmp, &eh->ether_shost, sizeof(ether_tmp)); | |||
1989 | ||||
1990 | /* Reattach SNAP header */ | |||
1991 | if (hassnap) { | |||
1992 | M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT)(m) = m_prepend((m), (8), (0x0002)); | |||
1993 | if (m == NULL((void *)0)) | |||
1994 | goto dropit; | |||
1995 | bcopy(llc, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), LLC_SNAPFRAMELEN8); | |||
1996 | } | |||
1997 | ||||
1998 | /* Reattach ethernet header */ | |||
1999 | M_PREPEND(m, sizeof(*eh), M_DONTWAIT)(m) = m_prepend((m), (sizeof(*eh)), (0x0002)); | |||
2000 | if (m == NULL((void *)0)) | |||
2001 | goto dropit; | |||
2002 | bcopy(eh, mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), sizeof(*eh)); | |||
2003 | ||||
2004 | bridge_enqueue(ifp, m); | |||
2005 | m_freem(n); | |||
2006 | return; | |||
2007 | ||||
2008 | dropit: | |||
2009 | m_freem(n); | |||
2010 | } | |||
2011 | ||||
2012 | void | |||
2013 | bridge_take(void *unused) | |||
2014 | { | |||
2015 | return; | |||
2016 | } | |||
2017 | ||||
2018 | void | |||
2019 | bridge_rele(void *unused) | |||
2020 | { | |||
2021 | return; | |||
2022 | } |