| 1 | /* $NetBSD: if_agr.c,v 1.39 2016/08/07 17:38:34 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c)2005 YAMAMOTO Takashi, |
| 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 AND CONTRIBUTORS ``AS IS'' AND |
| 17 | * 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 AUTHOR OR CONTRIBUTORS BE LIABLE |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: if_agr.c,v 1.39 2016/08/07 17:38:34 christos Exp $" ); |
| 31 | |
| 32 | #ifdef _KERNEL_OPT |
| 33 | #include "opt_inet.h" |
| 34 | #endif |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/callout.h> |
| 38 | #include <sys/malloc.h> |
| 39 | #include <sys/mbuf.h> |
| 40 | #include <sys/systm.h> |
| 41 | #include <sys/types.h> |
| 42 | #include <sys/queue.h> |
| 43 | #include <sys/sockio.h> |
| 44 | #include <sys/proc.h> /* XXX for curproc */ |
| 45 | #include <sys/kauth.h> |
| 46 | #include <sys/xcall.h> |
| 47 | #include <sys/device.h> |
| 48 | #include <sys/module.h> |
| 49 | #include <sys/atomic.h> |
| 50 | |
| 51 | #include <net/bpf.h> |
| 52 | #include <net/if.h> |
| 53 | #include <net/if_dl.h> |
| 54 | #include <net/if_types.h> |
| 55 | #include <net/if_ether.h> |
| 56 | |
| 57 | #if defined(INET) |
| 58 | #include <netinet/in.h> |
| 59 | #include <netinet/if_inarp.h> |
| 60 | #endif |
| 61 | |
| 62 | #include <net/agr/if_agrvar.h> |
| 63 | #include <net/agr/if_agrvar_impl.h> |
| 64 | #include <net/agr/if_agrioctl.h> |
| 65 | #include <net/agr/if_agrsubr.h> |
| 66 | #include <net/agr/if_agrethervar.h> |
| 67 | |
| 68 | #include "ioconf.h" |
| 69 | |
| 70 | static int agr_clone_create(struct if_clone *, int); |
| 71 | static int agr_clone_destroy(struct ifnet *); |
| 72 | static void agr_start(struct ifnet *); |
| 73 | static int agr_setconfig(struct agr_softc *, const struct agrreq *); |
| 74 | static int agr_getconfig(struct agr_softc *, struct agrreq *); |
| 75 | static int agr_getportlist(struct agr_softc *, struct agrreq *); |
| 76 | static int agr_addport(struct ifnet *, struct ifnet *); |
| 77 | static int agr_remport(struct ifnet *, struct ifnet *); |
| 78 | static int agrreq_copyin(const void *, struct agrreq *); |
| 79 | static int agrreq_copyout(void *, struct agrreq *); |
| 80 | static int agr_ioctl(struct ifnet *, u_long, void *); |
| 81 | static struct agr_port *agr_select_tx_port(struct agr_softc *, struct mbuf *); |
| 82 | static int agr_ioctl_filter(struct ifnet *, u_long, void *); |
| 83 | static void agr_reset_iftype(struct ifnet *); |
| 84 | static int agr_config_promisc(struct agr_softc *); |
| 85 | static int agrport_config_promisc_callback(struct agr_port *, void *); |
| 86 | static int agrport_config_promisc(struct agr_port *, bool); |
| 87 | static int agrport_cleanup(struct agr_softc *, struct agr_port *); |
| 88 | |
| 89 | static int agr_enter(struct agr_softc *); |
| 90 | static void agr_exit(struct agr_softc *); |
| 91 | static int agr_pause(struct agr_softc *); |
| 92 | static void agr_evacuate(struct agr_softc *); |
| 93 | static void agr_sync(void); |
| 94 | static void agr_ports_lock(struct agr_softc *); |
| 95 | static void agr_ports_unlock(struct agr_softc *); |
| 96 | static bool agr_ports_enter(struct agr_softc *); |
| 97 | static void agr_ports_exit(struct agr_softc *); |
| 98 | |
| 99 | static struct if_clone agr_cloner = |
| 100 | IF_CLONE_INITIALIZER("agr" , agr_clone_create, agr_clone_destroy); |
| 101 | |
| 102 | static u_int agr_count; |
| 103 | |
| 104 | /* |
| 105 | * EXPORTED FUNCTIONS |
| 106 | */ |
| 107 | |
| 108 | /* |
| 109 | * agrattch: device attach routine. |
| 110 | */ |
| 111 | |
| 112 | void |
| 113 | agrattach(int count) |
| 114 | { |
| 115 | |
| 116 | /* |
| 117 | * Nothing to do here, initialization is handled by the |
| 118 | * module initialization code in agrinit() below). |
| 119 | */ |
| 120 | } |
| 121 | |
| 122 | static void |
| 123 | agrinit(void) |
| 124 | { |
| 125 | if_clone_attach(&agr_cloner); |
| 126 | } |
| 127 | |
| 128 | static int |
| 129 | agrdetach(void) |
| 130 | { |
| 131 | int error = 0; |
| 132 | |
| 133 | if (agr_count != 0) |
| 134 | error = EBUSY; |
| 135 | |
| 136 | if (error == 0) |
| 137 | if_clone_detach(&agr_cloner); |
| 138 | |
| 139 | return error; |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * agr_input: frame collector. |
| 144 | */ |
| 145 | |
| 146 | void |
| 147 | agr_input(struct ifnet *ifp_port, struct mbuf *m) |
| 148 | { |
| 149 | struct agr_port *port; |
| 150 | struct ifnet *ifp; |
| 151 | #if NVLAN > 0 |
| 152 | struct m_tag *mtag; |
| 153 | #endif |
| 154 | |
| 155 | port = ifp_port->if_agrprivate; |
| 156 | KASSERT(port); |
| 157 | ifp = port->port_agrifp; |
| 158 | if ((port->port_flags & AGRPORT_COLLECTING) == 0) { |
| 159 | m_freem(m); |
| 160 | ifp->if_ierrors++; |
| 161 | return; |
| 162 | } |
| 163 | |
| 164 | ifp->if_ipackets++; |
| 165 | m_set_rcvif(m, ifp); |
| 166 | |
| 167 | #define DNH_DEBUG |
| 168 | #if NVLAN > 0 |
| 169 | /* got a vlan packet? */ |
| 170 | if ((mtag = m_tag_find(m, PACKET_TAG_VLAN, NULL)) != NULL) { |
| 171 | #ifdef DNH_DEBUG |
| 172 | printf("%s: vlan tag %d attached\n" , |
| 173 | ifp->if_xname, |
| 174 | htole16((*(u_int *)(mtag + 1)) & 0xffff)); |
| 175 | printf("%s: vlan input\n" , ifp->if_xname); |
| 176 | #endif |
| 177 | vlan_input(ifp, m); |
| 178 | return; |
| 179 | #ifdef DNH_DEBUG |
| 180 | } else { |
| 181 | struct ethercom *ec = (void *)ifp; |
| 182 | printf("%s: no vlan tag attached, ec_nvlans=%d\n" , |
| 183 | ifp->if_xname, ec->ec_nvlans); |
| 184 | #endif |
| 185 | } |
| 186 | #endif |
| 187 | |
| 188 | bpf_mtap(ifp, m); |
| 189 | if_percpuq_enqueue(ifp->if_percpuq, m); |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * EXPORTED AGR-INTERNAL FUNCTIONS |
| 194 | */ |
| 195 | |
| 196 | void |
| 197 | agr_lock(struct agr_softc *sc) |
| 198 | { |
| 199 | |
| 200 | mutex_enter(&sc->sc_lock); |
| 201 | } |
| 202 | |
| 203 | void |
| 204 | agr_unlock(struct agr_softc *sc) |
| 205 | { |
| 206 | |
| 207 | mutex_exit(&sc->sc_lock); |
| 208 | } |
| 209 | |
| 210 | /* |
| 211 | * agr_xmit_frame: transmit a pre-built frame. |
| 212 | */ |
| 213 | |
| 214 | int |
| 215 | agr_xmit_frame(struct ifnet *ifp_port, struct mbuf *m) |
| 216 | { |
| 217 | int error; |
| 218 | |
| 219 | struct sockaddr_storage dst0; |
| 220 | struct sockaddr *dst; |
| 221 | int hdrlen; |
| 222 | |
| 223 | /* |
| 224 | * trim off link level header and let if_output re-add it. |
| 225 | * XXX better to introduce an API to transmit pre-built frames. |
| 226 | */ |
| 227 | |
| 228 | hdrlen = ifp_port->if_hdrlen; |
| 229 | if (m->m_pkthdr.len < hdrlen) { |
| 230 | m_freem(m); |
| 231 | return EINVAL; |
| 232 | } |
| 233 | memset(&dst0, 0, sizeof(dst0)); |
| 234 | dst = (struct sockaddr *)&dst0; |
| 235 | dst->sa_family = pseudo_AF_HDRCMPLT; |
| 236 | dst->sa_len = hdrlen; |
| 237 | m_copydata(m, 0, hdrlen, &dst->sa_data); |
| 238 | m_adj(m, hdrlen); |
| 239 | |
| 240 | error = if_output_lock(ifp_port, ifp_port, m, dst, NULL); |
| 241 | |
| 242 | return error; |
| 243 | } |
| 244 | |
| 245 | int |
| 246 | agrport_ioctl(struct agr_port *port, u_long cmd, void *arg) |
| 247 | { |
| 248 | struct ifnet *ifp = port->port_ifp; |
| 249 | |
| 250 | KASSERT(ifp->if_agrprivate == (void *)port); |
| 251 | KASSERT(ifp->if_ioctl == agr_ioctl_filter); |
| 252 | |
| 253 | return (*port->port_ioctl)(ifp, cmd, arg); |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | * INTERNAL FUNCTIONS |
| 258 | */ |
| 259 | |
| 260 | /* |
| 261 | * Enable vlan hardware assist for the specified port. |
| 262 | */ |
| 263 | static int |
| 264 | agr_vlan_add(struct agr_port *port, void *arg) |
| 265 | { |
| 266 | struct ifnet *ifp = port->port_ifp; |
| 267 | struct ethercom *ec_port = (void *)ifp; |
| 268 | int error=0; |
| 269 | |
| 270 | if (ec_port->ec_nvlans++ == 0 && |
| 271 | (ec_port->ec_capabilities & ETHERCAP_VLAN_MTU) != 0) { |
| 272 | struct ifnet *p = port->port_ifp; |
| 273 | /* |
| 274 | * Enable Tx/Rx of VLAN-sized frames. |
| 275 | */ |
| 276 | ec_port->ec_capenable |= ETHERCAP_VLAN_MTU; |
| 277 | if (p->if_flags & IFF_UP) { |
| 278 | error = if_flags_set(p, p->if_flags); |
| 279 | if (error) { |
| 280 | if (ec_port->ec_nvlans-- == 1) |
| 281 | ec_port->ec_capenable &= |
| 282 | ~ETHERCAP_VLAN_MTU; |
| 283 | return (error); |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return error; |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * Disable vlan hardware assist for the specified port. |
| 293 | */ |
| 294 | static int |
| 295 | agr_vlan_del(struct agr_port *port, void *arg) |
| 296 | { |
| 297 | struct ethercom *ec_port = (void *)port->port_ifp; |
| 298 | |
| 299 | /* Disable vlan support */ |
| 300 | if (ec_port->ec_nvlans-- == 1) { |
| 301 | /* |
| 302 | * Disable Tx/Rx of VLAN-sized frames. |
| 303 | */ |
| 304 | ec_port->ec_capenable &= ~ETHERCAP_VLAN_MTU; |
| 305 | if (port->port_ifp->if_flags & IFF_UP) { |
| 306 | (void)if_flags_set(port->port_ifp, |
| 307 | port->port_ifp->if_flags); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | |
| 315 | /* |
| 316 | * Check for vlan attach/detach. |
| 317 | * ec->ec_nvlans is directly modified by the vlan driver. |
| 318 | * We keep a local count in sc (sc->sc_nvlans) to detect |
| 319 | * when the vlan driver attaches or detaches. |
| 320 | * Note the agr interface must be up for this to work. |
| 321 | */ |
| 322 | static void |
| 323 | agr_vlan_check(struct ifnet *ifp, struct agr_softc *sc) |
| 324 | { |
| 325 | struct ethercom *ec = (void *)ifp; |
| 326 | |
| 327 | /* vlans in sync? */ |
| 328 | if (sc->sc_nvlans == ec->ec_nvlans) { |
| 329 | return; |
| 330 | } |
| 331 | |
| 332 | if (sc->sc_nvlans == 0) { |
| 333 | /* vlan added */ |
| 334 | agr_port_foreach(sc, agr_vlan_add, NULL); |
| 335 | sc->sc_nvlans = ec->ec_nvlans; |
| 336 | } else if (ec->ec_nvlans == 0) { |
| 337 | /* vlan removed */ |
| 338 | agr_port_foreach(sc, agr_vlan_del, NULL); |
| 339 | sc->sc_nvlans = 0; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | static int |
| 344 | agr_clone_create(struct if_clone *ifc, int unit) |
| 345 | { |
| 346 | struct agr_softc *sc; |
| 347 | struct ifnet *ifp; |
| 348 | |
| 349 | sc = agr_alloc_softc(); |
| 350 | TAILQ_INIT(&sc->sc_ports); |
| 351 | mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NET); |
| 352 | mutex_init(&sc->sc_entry_mtx, MUTEX_DEFAULT, IPL_NONE); |
| 353 | cv_init(&sc->sc_insc_cv, "agrsoftc" ); |
| 354 | cv_init(&sc->sc_ports_cv, "agrports" ); |
| 355 | agrtimer_init(sc); |
| 356 | ifp = &sc->sc_if; |
| 357 | snprintf(ifp->if_xname, sizeof(ifp->if_xname), "%s%d" , |
| 358 | ifc->ifc_name, unit); |
| 359 | |
| 360 | ifp->if_softc = sc; |
| 361 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 362 | ifp->if_start = agr_start; |
| 363 | ifp->if_ioctl = agr_ioctl; |
| 364 | IFQ_SET_READY(&ifp->if_snd); |
| 365 | |
| 366 | if_attach(ifp); |
| 367 | |
| 368 | agr_reset_iftype(ifp); |
| 369 | atomic_inc_uint(&agr_count); |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | static void |
| 374 | agr_reset_iftype(struct ifnet *ifp) |
| 375 | { |
| 376 | |
| 377 | ifp->if_type = IFT_OTHER; |
| 378 | ifp->if_dlt = DLT_NULL; |
| 379 | ifp->if_addrlen = 0; |
| 380 | if_alloc_sadl(ifp); |
| 381 | } |
| 382 | |
| 383 | static int |
| 384 | agr_clone_destroy(struct ifnet *ifp) |
| 385 | { |
| 386 | struct agr_softc *sc = ifp->if_softc; |
| 387 | int error; |
| 388 | |
| 389 | if ((error = agr_pause(sc)) != 0) |
| 390 | return error; |
| 391 | |
| 392 | if_detach(ifp); |
| 393 | agrtimer_destroy(sc); |
| 394 | /* Now that the ifnet has been detached, and our |
| 395 | * component ifnets are disconnected, there can be |
| 396 | * no new threads in the softc. Wait for every |
| 397 | * thread to get out of the softc. |
| 398 | */ |
| 399 | agr_evacuate(sc); |
| 400 | mutex_destroy(&sc->sc_lock); |
| 401 | mutex_destroy(&sc->sc_entry_mtx); |
| 402 | cv_destroy(&sc->sc_insc_cv); |
| 403 | cv_destroy(&sc->sc_ports_cv); |
| 404 | agr_free_softc(sc); |
| 405 | |
| 406 | atomic_dec_uint(&agr_count); |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static struct agr_port * |
| 411 | agr_select_tx_port(struct agr_softc *sc, struct mbuf *m) |
| 412 | { |
| 413 | |
| 414 | return (*sc->sc_iftop->iftop_select_tx_port)(sc, m); |
| 415 | } |
| 416 | |
| 417 | #if 0 /* "generic" version */ |
| 418 | static struct agr_port * |
| 419 | agr_select_tx_port(struct agr_softc *sc, struct mbuf *m) |
| 420 | { |
| 421 | struct agr_port *port; |
| 422 | uint32_t hash; |
| 423 | |
| 424 | hash = (*sc->sc_iftop->iftop_hashmbuf)(sc, m); |
| 425 | if (sc->sc_nports == 0) |
| 426 | return NULL; |
| 427 | hash %= sc->sc_nports; |
| 428 | port = TAILQ_FIRST(&sc->sc_ports); |
| 429 | KASSERT(port != NULL); |
| 430 | while (hash--) { |
| 431 | port = TAILQ_NEXT(port, port_q); |
| 432 | KASSERT(port != NULL); |
| 433 | } |
| 434 | |
| 435 | return port; |
| 436 | } |
| 437 | #endif /* 0 */ |
| 438 | |
| 439 | static void |
| 440 | agr_start(struct ifnet *ifp) |
| 441 | { |
| 442 | struct agr_softc *sc = ifp->if_softc; |
| 443 | struct mbuf *m; |
| 444 | |
| 445 | AGR_LOCK(sc); |
| 446 | |
| 447 | while (/* CONSTCOND */ 1) { |
| 448 | struct agr_port *port; |
| 449 | |
| 450 | IFQ_DEQUEUE(&ifp->if_snd, m); |
| 451 | if (m == NULL) { |
| 452 | break; |
| 453 | } |
| 454 | bpf_mtap(ifp, m); |
| 455 | port = agr_select_tx_port(sc, m); |
| 456 | if (port) { |
| 457 | int error; |
| 458 | |
| 459 | error = agr_xmit_frame(port->port_ifp, m); |
| 460 | if (error) { |
| 461 | ifp->if_oerrors++; |
| 462 | } else { |
| 463 | ifp->if_opackets++; |
| 464 | } |
| 465 | } else { |
| 466 | m_freem(m); |
| 467 | ifp->if_oerrors++; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | AGR_UNLOCK(sc); |
| 472 | |
| 473 | ifp->if_flags &= ~IFF_OACTIVE; |
| 474 | } |
| 475 | |
| 476 | static int |
| 477 | agr_setconfig(struct agr_softc *sc, const struct agrreq *ar) |
| 478 | { |
| 479 | struct ifnet *ifp = &sc->sc_if; |
| 480 | int cmd = ar->ar_cmd; |
| 481 | struct ifnet *ifp_port; |
| 482 | int error = 0; |
| 483 | char ifname[IFNAMSIZ]; |
| 484 | |
| 485 | memset(ifname, 0, sizeof(ifname)); |
| 486 | error = copyin(ar->ar_buf, ifname, |
| 487 | MIN(ar->ar_buflen, sizeof(ifname) - 1)); |
| 488 | if (error) { |
| 489 | return error; |
| 490 | } |
| 491 | ifp_port = ifunit(ifname); |
| 492 | if (ifp_port == NULL) { |
| 493 | return ENOENT; |
| 494 | } |
| 495 | |
| 496 | agr_ports_lock(sc); |
| 497 | switch (cmd) { |
| 498 | case AGRCMD_ADDPORT: |
| 499 | error = agr_addport(ifp, ifp_port); |
| 500 | break; |
| 501 | |
| 502 | case AGRCMD_REMPORT: |
| 503 | error = agr_remport(ifp, ifp_port); |
| 504 | break; |
| 505 | |
| 506 | default: |
| 507 | error = EINVAL; |
| 508 | break; |
| 509 | } |
| 510 | agr_ports_unlock(sc); |
| 511 | |
| 512 | return error; |
| 513 | } |
| 514 | |
| 515 | static int |
| 516 | agr_getportlist(struct agr_softc *sc, struct agrreq *ar) |
| 517 | { |
| 518 | struct agr_port *port; |
| 519 | struct agrportlist apl; |
| 520 | struct agrportinfo api; |
| 521 | char *cp = ar->ar_buf; |
| 522 | size_t bufleft = (cp == NULL) ? 0 : ar->ar_buflen; |
| 523 | int error; |
| 524 | |
| 525 | if (cp != NULL) { |
| 526 | memset(&apl, 0, sizeof(apl)); |
| 527 | memset(&api, 0, sizeof(api)); |
| 528 | |
| 529 | if (bufleft < sizeof(apl)) { |
| 530 | return E2BIG; |
| 531 | } |
| 532 | apl.apl_nports = sc->sc_nports; |
| 533 | error = copyout(&apl, cp, sizeof(apl)); |
| 534 | if (error) { |
| 535 | return error; |
| 536 | } |
| 537 | cp += sizeof(apl); |
| 538 | } |
| 539 | bufleft -= sizeof(apl); |
| 540 | |
| 541 | TAILQ_FOREACH(port, &sc->sc_ports, port_q) { |
| 542 | if (cp != NULL) { |
| 543 | if (bufleft < sizeof(api)) { |
| 544 | return E2BIG; |
| 545 | } |
| 546 | memcpy(api.api_ifname, port->port_ifp->if_xname, |
| 547 | sizeof(api.api_ifname)); |
| 548 | api.api_flags = 0; |
| 549 | if (port->port_flags & AGRPORT_COLLECTING) { |
| 550 | api.api_flags |= AGRPORTINFO_COLLECTING; |
| 551 | } |
| 552 | if (port->port_flags & AGRPORT_DISTRIBUTING) { |
| 553 | api.api_flags |= AGRPORTINFO_DISTRIBUTING; |
| 554 | } |
| 555 | error = copyout(&api, cp, sizeof(api)); |
| 556 | if (error) { |
| 557 | return error; |
| 558 | } |
| 559 | cp += sizeof(api); |
| 560 | } |
| 561 | bufleft -= sizeof(api); |
| 562 | } |
| 563 | |
| 564 | if (cp == NULL) { |
| 565 | ar->ar_buflen = -bufleft; /* necessary buffer size */ |
| 566 | } |
| 567 | |
| 568 | return 0; |
| 569 | } |
| 570 | |
| 571 | static int |
| 572 | agr_getconfig(struct agr_softc *sc, struct agrreq *ar) |
| 573 | { |
| 574 | int cmd = ar->ar_cmd; |
| 575 | int error; |
| 576 | |
| 577 | (void)agr_ports_enter(sc); |
| 578 | switch (cmd) { |
| 579 | case AGRCMD_PORTLIST: |
| 580 | error = agr_getportlist(sc, ar); |
| 581 | break; |
| 582 | |
| 583 | default: |
| 584 | error = EINVAL; |
| 585 | break; |
| 586 | } |
| 587 | agr_ports_exit(sc); |
| 588 | |
| 589 | return error; |
| 590 | } |
| 591 | |
| 592 | static int |
| 593 | agr_addport(struct ifnet *ifp, struct ifnet *ifp_port) |
| 594 | { |
| 595 | const struct ifaddr *ifa; |
| 596 | struct agr_softc *sc = ifp->if_softc; |
| 597 | struct agr_port *port = NULL; |
| 598 | int error = 0; |
| 599 | int s; |
| 600 | |
| 601 | if (ifp_port->if_ioctl == NULL) { |
| 602 | error = EOPNOTSUPP; |
| 603 | goto out; |
| 604 | } |
| 605 | |
| 606 | if (ifp_port->if_agrprivate) { |
| 607 | error = EBUSY; |
| 608 | goto out; |
| 609 | } |
| 610 | |
| 611 | if (ifp_port->if_start == agr_start) { |
| 612 | error = EINVAL; |
| 613 | goto out; |
| 614 | } |
| 615 | |
| 616 | port = malloc(sizeof(*port) + ifp_port->if_addrlen, M_DEVBUF, |
| 617 | M_WAITOK | M_ZERO); |
| 618 | if (port == NULL) { |
| 619 | error = ENOMEM; |
| 620 | goto out; |
| 621 | } |
| 622 | port->port_flags = AGRPORT_LARVAL; |
| 623 | |
| 624 | s = pserialize_read_enter(); |
| 625 | IFADDR_READER_FOREACH(ifa, ifp_port) { |
| 626 | if (ifa->ifa_addr->sa_family != AF_LINK) { |
| 627 | pserialize_read_exit(s); |
| 628 | error = EBUSY; |
| 629 | goto out; |
| 630 | } |
| 631 | } |
| 632 | pserialize_read_exit(s); |
| 633 | |
| 634 | if (sc->sc_nports == 0) { |
| 635 | switch (ifp_port->if_type) { |
| 636 | case IFT_ETHER: |
| 637 | sc->sc_iftop = &agrether_ops; |
| 638 | break; |
| 639 | |
| 640 | default: |
| 641 | error = EPROTONOSUPPORT; /* XXX */ |
| 642 | goto out; |
| 643 | } |
| 644 | |
| 645 | error = (*sc->sc_iftop->iftop_ctor)(sc, ifp_port); |
| 646 | if (error) |
| 647 | goto out; |
| 648 | agrtimer_start(sc); |
| 649 | } else { |
| 650 | if (ifp->if_type != ifp_port->if_type) { |
| 651 | error = EINVAL; |
| 652 | goto out; |
| 653 | } |
| 654 | if (ifp->if_addrlen != ifp_port->if_addrlen) { |
| 655 | error = EINVAL; |
| 656 | goto out; |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | memcpy(port->port_origlladdr, CLLADDR(ifp_port->if_sadl), |
| 661 | ifp_port->if_addrlen); |
| 662 | |
| 663 | /* |
| 664 | * start to modify ifp_port. |
| 665 | */ |
| 666 | |
| 667 | /* |
| 668 | * XXX this should probably be SIOCALIFADDR but that doesn't |
| 669 | * appear to work (ENOTTY). We want to change the mac address |
| 670 | * of each port to that of the first port. No need for arps |
| 671 | * since there are no inet addresses assigned to the ports. |
| 672 | */ |
| 673 | error = if_addr_init(ifp_port, ifp->if_dl, true); |
| 674 | |
| 675 | if (error) { |
| 676 | printf("%s: if_addr_init error %d\n" , __func__, error); |
| 677 | goto cleanup; |
| 678 | } |
| 679 | port->port_flags |= AGRPORT_LADDRCHANGED; |
| 680 | |
| 681 | ifp->if_type = ifp_port->if_type; |
| 682 | AGR_LOCK(sc); |
| 683 | |
| 684 | port->port_ifp = ifp_port; |
| 685 | ifp_port->if_agrprivate = port; |
| 686 | port->port_agrifp = ifp; |
| 687 | TAILQ_INSERT_TAIL(&sc->sc_ports, port, port_q); |
| 688 | sc->sc_nports++; |
| 689 | |
| 690 | port->port_ioctl = ifp_port->if_ioctl; |
| 691 | ifp_port->if_ioctl = agr_ioctl_filter; |
| 692 | |
| 693 | port->port_flags |= AGRPORT_ATTACHED; |
| 694 | |
| 695 | AGR_UNLOCK(sc); |
| 696 | |
| 697 | error = (*sc->sc_iftop->iftop_portinit)(sc, port); |
| 698 | if (error) { |
| 699 | printf("%s: portinit error %d\n" , __func__, error); |
| 700 | goto cleanup; |
| 701 | } |
| 702 | |
| 703 | ifp->if_flags |= IFF_RUNNING; |
| 704 | |
| 705 | agrport_config_promisc(port, (ifp->if_flags & IFF_PROMISC) != 0); |
| 706 | error = (*sc->sc_iftop->iftop_configmulti_port)(sc, port, true); |
| 707 | if (error) { |
| 708 | printf("%s: configmulti error %d\n" , __func__, error); |
| 709 | goto cleanup; |
| 710 | } |
| 711 | |
| 712 | AGR_LOCK(sc); |
| 713 | port->port_flags &= ~AGRPORT_LARVAL; |
| 714 | AGR_UNLOCK(sc); |
| 715 | out: |
| 716 | if (error && port) { |
| 717 | free(port, M_DEVBUF); |
| 718 | } |
| 719 | return error; |
| 720 | |
| 721 | cleanup: |
| 722 | if (agrport_cleanup(sc, port)) { |
| 723 | printf("%s: error on cleanup\n" , __func__); |
| 724 | |
| 725 | port = NULL; /* XXX */ |
| 726 | } |
| 727 | |
| 728 | if (sc->sc_nports == 0) { |
| 729 | KASSERT(TAILQ_EMPTY(&sc->sc_ports)); |
| 730 | agrtimer_stop(sc); |
| 731 | (*sc->sc_iftop->iftop_dtor)(sc); |
| 732 | sc->sc_iftop = NULL; |
| 733 | agr_reset_iftype(ifp); |
| 734 | } else { |
| 735 | KASSERT(!TAILQ_EMPTY(&sc->sc_ports)); |
| 736 | } |
| 737 | |
| 738 | goto out; |
| 739 | } |
| 740 | |
| 741 | static int |
| 742 | agr_remport(struct ifnet *ifp, struct ifnet *ifp_port) |
| 743 | { |
| 744 | struct agr_softc *sc = ifp->if_softc; |
| 745 | struct agr_port *port; |
| 746 | int error = 0; |
| 747 | |
| 748 | if (ifp_port->if_agrprivate == NULL) { |
| 749 | error = ENOENT; |
| 750 | return error; |
| 751 | } |
| 752 | |
| 753 | port = ifp_port->if_agrprivate; |
| 754 | if (port->port_agrifp != ifp) { |
| 755 | error = EINVAL; |
| 756 | return error; |
| 757 | } |
| 758 | |
| 759 | KASSERT(sc->sc_nports > 0); |
| 760 | |
| 761 | AGR_LOCK(sc); |
| 762 | port->port_flags |= AGRPORT_DETACHING; |
| 763 | AGR_UNLOCK(sc); |
| 764 | |
| 765 | error = (*sc->sc_iftop->iftop_portfini)(sc, port); |
| 766 | if (error) { |
| 767 | /* XXX XXX */ |
| 768 | printf("%s: portfini error %d\n" , __func__, error); |
| 769 | goto out; |
| 770 | } |
| 771 | |
| 772 | error = (*sc->sc_iftop->iftop_configmulti_port)(sc, port, false); |
| 773 | if (error) { |
| 774 | /* XXX XXX */ |
| 775 | printf("%s: configmulti_port error %d\n" , __func__, error); |
| 776 | goto out; |
| 777 | } |
| 778 | |
| 779 | error = agrport_cleanup(sc, port); |
| 780 | if (error) { |
| 781 | /* XXX XXX */ |
| 782 | printf("%s: agrport_cleanup error %d\n" , __func__, error); |
| 783 | goto out; |
| 784 | } |
| 785 | |
| 786 | free(port, M_DEVBUF); |
| 787 | |
| 788 | out: |
| 789 | if (sc->sc_nports == 0) { |
| 790 | KASSERT(TAILQ_EMPTY(&sc->sc_ports)); |
| 791 | agrtimer_stop(sc); |
| 792 | (*sc->sc_iftop->iftop_dtor)(sc); |
| 793 | sc->sc_iftop = NULL; |
| 794 | /* XXX should purge all addresses? */ |
| 795 | agr_reset_iftype(ifp); |
| 796 | } else { |
| 797 | KASSERT(!TAILQ_EMPTY(&sc->sc_ports)); |
| 798 | } |
| 799 | |
| 800 | return error; |
| 801 | } |
| 802 | |
| 803 | static int |
| 804 | agrport_cleanup(struct agr_softc *sc, struct agr_port *port) |
| 805 | { |
| 806 | struct ifnet *ifp_port = port->port_ifp; |
| 807 | int error; |
| 808 | int result = 0; |
| 809 | |
| 810 | error = agrport_config_promisc(port, false); |
| 811 | if (error) { |
| 812 | printf("%s: config_promisc error %d\n" , __func__, error); |
| 813 | result = error; |
| 814 | } |
| 815 | |
| 816 | if ((port->port_flags & AGRPORT_LADDRCHANGED)) { |
| 817 | #if 0 |
| 818 | memcpy(LLADDR(ifp_port->if_sadl), port->port_origlladdr, |
| 819 | ifp_port->if_addrlen); |
| 820 | if (ifp_port->if_init != NULL) { |
| 821 | error = (*ifp_port->if_init)(ifp_port); |
| 822 | } |
| 823 | #else |
| 824 | union { |
| 825 | struct sockaddr sa; |
| 826 | struct sockaddr_dl sdl; |
| 827 | struct sockaddr_storage ss; |
| 828 | } u; |
| 829 | struct ifaddr ifa; |
| 830 | |
| 831 | sockaddr_dl_init(&u.sdl, sizeof(u.ss), |
| 832 | 0, ifp_port->if_type, NULL, 0, |
| 833 | port->port_origlladdr, ifp_port->if_addrlen); |
| 834 | memset(&ifa, 0, sizeof(ifa)); |
| 835 | ifa.ifa_addr = &u.sa; |
| 836 | error = agrport_ioctl(port, SIOCINITIFADDR, &ifa); |
| 837 | #endif |
| 838 | if (error) { |
| 839 | printf("%s: if_init error %d\n" , __func__, error); |
| 840 | result = error; |
| 841 | } else { |
| 842 | port->port_flags &= ~AGRPORT_LADDRCHANGED; |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | AGR_LOCK(sc); |
| 847 | if ((port->port_flags & AGRPORT_ATTACHED)) { |
| 848 | ifp_port->if_agrprivate = NULL; |
| 849 | |
| 850 | TAILQ_REMOVE(&sc->sc_ports, port, port_q); |
| 851 | sc->sc_nports--; |
| 852 | |
| 853 | KASSERT(ifp_port->if_ioctl == agr_ioctl_filter); |
| 854 | ifp_port->if_ioctl = port->port_ioctl; |
| 855 | |
| 856 | port->port_flags &= ~AGRPORT_ATTACHED; |
| 857 | } |
| 858 | AGR_UNLOCK(sc); |
| 859 | |
| 860 | return result; |
| 861 | } |
| 862 | |
| 863 | static int |
| 864 | agr_ioctl_multi(struct ifnet *ifp, u_long cmd, struct ifreq *ifr) |
| 865 | { |
| 866 | struct agr_softc *sc = ifp->if_softc; |
| 867 | int error; |
| 868 | |
| 869 | error = (*sc->sc_iftop->iftop_configmulti_ifreq)(sc, ifr, |
| 870 | (cmd == SIOCADDMULTI)); |
| 871 | |
| 872 | return error; |
| 873 | } |
| 874 | |
| 875 | /* |
| 876 | * XXX an incomplete hack; can't filter ioctls handled ifioctl(). |
| 877 | * |
| 878 | * the intention here is to prevent operations on underlying interfaces |
| 879 | * so that their states are not changed in the way that agr(4) doesn't |
| 880 | * expect. cf. the BUGS section in the agr(4) manual page. |
| 881 | */ |
| 882 | static int |
| 883 | agr_ioctl_filter(struct ifnet *ifp, u_long cmd, void *arg) |
| 884 | { |
| 885 | struct agr_port *port = ifp->if_agrprivate; |
| 886 | int error; |
| 887 | |
| 888 | KASSERT(port); |
| 889 | |
| 890 | switch (cmd) { |
| 891 | case SIOCADDMULTI: /* add m'cast addr */ |
| 892 | case SIOCAIFADDR: /* add/chg IF alias */ |
| 893 | case SIOCALIFADDR: /* add IF addr */ |
| 894 | case SIOCDELMULTI: /* del m'cast addr */ |
| 895 | case SIOCDIFADDR: /* delete IF addr */ |
| 896 | case SIOCDIFPHYADDR: /* delete gif addrs */ |
| 897 | case SIOCDLIFADDR: /* delete IF addr */ |
| 898 | case SIOCINITIFADDR: |
| 899 | case SIOCSDRVSPEC: /* set driver-specific parameters */ |
| 900 | case SIOCSIFADDR: /* set ifnet address */ |
| 901 | case SIOCSIFBRDADDR: /* set broadcast addr */ |
| 902 | case SIOCSIFDSTADDR: /* set p-p address */ |
| 903 | case SIOCSIFGENERIC: /* generic IF set op */ |
| 904 | case SIOCSIFMEDIA: /* set net media */ |
| 905 | case SIOCSIFMETRIC: /* set IF metric */ |
| 906 | case SIOCSIFMTU: /* set ifnet mtu */ |
| 907 | case SIOCSIFNETMASK: /* set net addr mask */ |
| 908 | case SIOCSIFPHYADDR: /* set gif addres */ |
| 909 | case SIOCSLIFPHYADDR: /* set gif addrs */ |
| 910 | case SIOCSVH: /* set carp param */ |
| 911 | error = EBUSY; |
| 912 | break; |
| 913 | case SIOCSIFCAP: /* XXX */ |
| 914 | case SIOCSIFFLAGS: /* XXX */ |
| 915 | default: |
| 916 | error = agrport_ioctl(port, cmd, arg); |
| 917 | break; |
| 918 | } |
| 919 | return error; |
| 920 | } |
| 921 | |
| 922 | static int |
| 923 | agrreq_copyin(const void *ubuf, struct agrreq *ar) |
| 924 | { |
| 925 | int error; |
| 926 | |
| 927 | error = copyin(ubuf, ar, sizeof(*ar)); |
| 928 | if (error) { |
| 929 | return error; |
| 930 | } |
| 931 | |
| 932 | if (ar->ar_version != AGRREQ_VERSION) { |
| 933 | return EINVAL; |
| 934 | } |
| 935 | |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | static int |
| 940 | agrreq_copyout(void *ubuf, struct agrreq *ar) |
| 941 | { |
| 942 | int error; |
| 943 | |
| 944 | KASSERT(ar->ar_version == AGRREQ_VERSION); |
| 945 | |
| 946 | error = copyout(ar, ubuf, sizeof(*ar)); |
| 947 | if (error) { |
| 948 | return error; |
| 949 | } |
| 950 | |
| 951 | return 0; |
| 952 | } |
| 953 | |
| 954 | /* Make sure that if any interrupt handlers are out of the softc. */ |
| 955 | static void |
| 956 | agr_sync(void) |
| 957 | { |
| 958 | uint64_t h; |
| 959 | |
| 960 | if (!mp_online) |
| 961 | return; |
| 962 | |
| 963 | h = xc_broadcast(0, (xcfunc_t)nullop, NULL, NULL); |
| 964 | xc_wait(h); |
| 965 | } |
| 966 | |
| 967 | static int |
| 968 | agr_pause(struct agr_softc *sc) |
| 969 | { |
| 970 | int error; |
| 971 | |
| 972 | mutex_enter(&sc->sc_entry_mtx); |
| 973 | if ((error = sc->sc_noentry) != 0) |
| 974 | goto out; |
| 975 | |
| 976 | sc->sc_noentry = EBUSY; |
| 977 | |
| 978 | while (sc->sc_insc != 0) |
| 979 | cv_wait(&sc->sc_insc_cv, &sc->sc_entry_mtx); |
| 980 | |
| 981 | if (sc->sc_nports == 0) { |
| 982 | sc->sc_noentry = ENXIO; |
| 983 | } else { |
| 984 | sc->sc_noentry = 0; |
| 985 | error = EBUSY; |
| 986 | } |
| 987 | cv_broadcast(&sc->sc_insc_cv); |
| 988 | out: |
| 989 | mutex_exit(&sc->sc_entry_mtx); |
| 990 | return error; |
| 991 | } |
| 992 | |
| 993 | static void |
| 994 | agr_evacuate(struct agr_softc *sc) |
| 995 | { |
| 996 | mutex_enter(&sc->sc_entry_mtx); |
| 997 | cv_broadcast(&sc->sc_insc_cv); |
| 998 | while (sc->sc_insc != 0 || sc->sc_paused != 0) |
| 999 | cv_wait(&sc->sc_insc_cv, &sc->sc_entry_mtx); |
| 1000 | mutex_exit(&sc->sc_entry_mtx); |
| 1001 | |
| 1002 | agr_sync(); |
| 1003 | } |
| 1004 | |
| 1005 | static int |
| 1006 | agr_enter(struct agr_softc *sc) |
| 1007 | { |
| 1008 | int error; |
| 1009 | |
| 1010 | mutex_enter(&sc->sc_entry_mtx); |
| 1011 | sc->sc_paused++; |
| 1012 | while ((error = sc->sc_noentry) == EBUSY) |
| 1013 | cv_wait(&sc->sc_insc_cv, &sc->sc_entry_mtx); |
| 1014 | sc->sc_paused--; |
| 1015 | if (error == 0) |
| 1016 | sc->sc_insc++; |
| 1017 | mutex_exit(&sc->sc_entry_mtx); |
| 1018 | |
| 1019 | return error; |
| 1020 | } |
| 1021 | |
| 1022 | static void |
| 1023 | agr_exit(struct agr_softc *sc) |
| 1024 | { |
| 1025 | mutex_enter(&sc->sc_entry_mtx); |
| 1026 | if (--sc->sc_insc == 0) |
| 1027 | cv_signal(&sc->sc_insc_cv); |
| 1028 | mutex_exit(&sc->sc_entry_mtx); |
| 1029 | } |
| 1030 | |
| 1031 | static bool |
| 1032 | agr_ports_enter(struct agr_softc *sc) |
| 1033 | { |
| 1034 | mutex_enter(&sc->sc_entry_mtx); |
| 1035 | while (sc->sc_wrports) |
| 1036 | cv_wait(&sc->sc_ports_cv, &sc->sc_entry_mtx); |
| 1037 | sc->sc_rdports++; |
| 1038 | mutex_exit(&sc->sc_entry_mtx); |
| 1039 | |
| 1040 | return true; |
| 1041 | } |
| 1042 | |
| 1043 | static void |
| 1044 | agr_ports_exit(struct agr_softc *sc) |
| 1045 | { |
| 1046 | mutex_enter(&sc->sc_entry_mtx); |
| 1047 | if (--sc->sc_rdports == 0) |
| 1048 | cv_signal(&sc->sc_ports_cv); |
| 1049 | mutex_exit(&sc->sc_entry_mtx); |
| 1050 | } |
| 1051 | |
| 1052 | static void |
| 1053 | agr_ports_lock(struct agr_softc *sc) |
| 1054 | { |
| 1055 | mutex_enter(&sc->sc_entry_mtx); |
| 1056 | while (sc->sc_rdports != 0) |
| 1057 | cv_wait(&sc->sc_ports_cv, &sc->sc_entry_mtx); |
| 1058 | sc->sc_wrports = true; |
| 1059 | mutex_exit(&sc->sc_entry_mtx); |
| 1060 | } |
| 1061 | |
| 1062 | static void |
| 1063 | agr_ports_unlock(struct agr_softc *sc) |
| 1064 | { |
| 1065 | mutex_enter(&sc->sc_entry_mtx); |
| 1066 | sc->sc_wrports = false; |
| 1067 | cv_signal(&sc->sc_ports_cv); |
| 1068 | mutex_exit(&sc->sc_entry_mtx); |
| 1069 | } |
| 1070 | |
| 1071 | static int |
| 1072 | agr_ioctl(struct ifnet *ifp, const u_long cmd, void *data) |
| 1073 | { |
| 1074 | struct agr_softc *sc = ifp->if_softc; |
| 1075 | struct ifreq *ifr = (struct ifreq *)data; |
| 1076 | struct ifaddr *ifa = (struct ifaddr *)data; |
| 1077 | struct agrreq ar; |
| 1078 | int error; |
| 1079 | bool in_ports = false; |
| 1080 | int s; |
| 1081 | |
| 1082 | if ((error = agr_enter(sc)) != 0) |
| 1083 | return error; |
| 1084 | |
| 1085 | s = splnet(); |
| 1086 | |
| 1087 | switch (cmd) { |
| 1088 | case SIOCINITIFADDR: |
| 1089 | in_ports = agr_ports_enter(sc); |
| 1090 | if (sc->sc_nports == 0) { |
| 1091 | error = EINVAL; |
| 1092 | break; |
| 1093 | } |
| 1094 | ifp->if_flags |= IFF_UP; |
| 1095 | switch (ifa->ifa_addr->sa_family) { |
| 1096 | #if defined(INET) |
| 1097 | case AF_INET: |
| 1098 | arp_ifinit(ifp, ifa); |
| 1099 | break; |
| 1100 | #endif |
| 1101 | default: |
| 1102 | break; |
| 1103 | } |
| 1104 | break; |
| 1105 | |
| 1106 | #if 0 /* notyet */ |
| 1107 | case SIOCSIFMTU: |
| 1108 | #endif |
| 1109 | |
| 1110 | case SIOCSIFFLAGS: |
| 1111 | /* |
| 1112 | * Check for a change in vlan status. This ioctl is the |
| 1113 | * only way we can tell that a vlan has attached or detached. |
| 1114 | * Note the agr interface must be up. |
| 1115 | */ |
| 1116 | agr_vlan_check(ifp, sc); |
| 1117 | |
| 1118 | if ((error = ifioctl_common(ifp, cmd, data)) != 0) |
| 1119 | break; |
| 1120 | agr_config_promisc(sc); |
| 1121 | break; |
| 1122 | |
| 1123 | case SIOCSETAGR: |
| 1124 | splx(s); |
| 1125 | error = kauth_authorize_network(kauth_cred_get(), |
| 1126 | KAUTH_NETWORK_INTERFACE, |
| 1127 | KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp, (void *)cmd, |
| 1128 | NULL); |
| 1129 | if (!error) { |
| 1130 | error = agrreq_copyin(ifr->ifr_data, &ar); |
| 1131 | } |
| 1132 | if (!error) { |
| 1133 | error = agr_setconfig(sc, &ar); |
| 1134 | } |
| 1135 | s = splnet(); |
| 1136 | break; |
| 1137 | |
| 1138 | case SIOCGETAGR: |
| 1139 | splx(s); |
| 1140 | error = agrreq_copyin(ifr->ifr_data, &ar); |
| 1141 | if (!error) { |
| 1142 | error = agr_getconfig(sc, &ar); |
| 1143 | } |
| 1144 | if (!error) { |
| 1145 | error = agrreq_copyout(ifr->ifr_data, &ar); |
| 1146 | } |
| 1147 | s = splnet(); |
| 1148 | break; |
| 1149 | |
| 1150 | case SIOCADDMULTI: |
| 1151 | case SIOCDELMULTI: |
| 1152 | in_ports = agr_ports_enter(sc); |
| 1153 | if (sc->sc_nports == 0) |
| 1154 | error = EINVAL; |
| 1155 | else |
| 1156 | error = agr_ioctl_multi(ifp, cmd, ifr); |
| 1157 | break; |
| 1158 | |
| 1159 | default: |
| 1160 | error = ifioctl_common(ifp, cmd, data); |
| 1161 | break; |
| 1162 | } |
| 1163 | |
| 1164 | if (in_ports) |
| 1165 | agr_ports_exit(sc); |
| 1166 | |
| 1167 | splx(s); |
| 1168 | |
| 1169 | agr_exit(sc); |
| 1170 | |
| 1171 | return error; |
| 1172 | } |
| 1173 | |
| 1174 | static int |
| 1175 | agr_config_promisc(struct agr_softc *sc) |
| 1176 | { |
| 1177 | int error; |
| 1178 | |
| 1179 | agr_port_foreach(sc, agrport_config_promisc_callback, &error); |
| 1180 | |
| 1181 | return error; |
| 1182 | } |
| 1183 | |
| 1184 | static int |
| 1185 | agrport_config_promisc_callback(struct agr_port *port, void *arg) |
| 1186 | { |
| 1187 | struct agr_softc *sc = AGR_SC_FROM_PORT(port); |
| 1188 | int *errorp = arg; |
| 1189 | int error; |
| 1190 | bool promisc; |
| 1191 | |
| 1192 | promisc = (sc->sc_if.if_flags & IFF_PROMISC) != 0; |
| 1193 | |
| 1194 | error = agrport_config_promisc(port, promisc); |
| 1195 | if (error) { |
| 1196 | *errorp = error; |
| 1197 | } |
| 1198 | |
| 1199 | return 0; |
| 1200 | } |
| 1201 | |
| 1202 | static int |
| 1203 | agrport_config_promisc(struct agr_port *port, bool promisc) |
| 1204 | { |
| 1205 | int error; |
| 1206 | |
| 1207 | if (( promisc && (port->port_flags & AGRPORT_PROMISC) != 0) || |
| 1208 | (!promisc && (port->port_flags & AGRPORT_PROMISC) == 0)) { |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
| 1212 | error = ifpromisc(port->port_ifp, promisc); |
| 1213 | if (error == 0) { |
| 1214 | if (promisc) { |
| 1215 | port->port_flags |= AGRPORT_PROMISC; |
| 1216 | } else { |
| 1217 | port->port_flags &= ~AGRPORT_PROMISC; |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | return error; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * Module infrastructure |
| 1226 | */ |
| 1227 | #include <net/if_module.h> |
| 1228 | |
| 1229 | IF_MODULE(MODULE_CLASS_DRIVER, agr, "" ) |
| 1230 | |