1 /* $OpenBSD: if_trunk.c,v 1.30 2007/01/31 06:20:19 reyk Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org> 5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 6 * Copyright (c) 2014, 2016 Marcelo Araujo <araujo@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 #include "opt_inet.h" 25 #include "opt_inet6.h" 26 #include "opt_kern_tls.h" 27 #include "opt_ratelimit.h" 28 29 #include <sys/param.h> 30 #include <sys/kernel.h> 31 #include <sys/malloc.h> 32 #include <sys/mbuf.h> 33 #include <sys/queue.h> 34 #include <sys/socket.h> 35 #include <sys/sockio.h> 36 #include <sys/sysctl.h> 37 #include <sys/module.h> 38 #include <sys/priv.h> 39 #include <sys/systm.h> 40 #include <sys/proc.h> 41 #include <sys/lock.h> 42 #include <sys/rmlock.h> 43 #include <sys/sx.h> 44 #include <sys/taskqueue.h> 45 #include <sys/eventhandler.h> 46 47 #include <net/ethernet.h> 48 #include <net/if.h> 49 #include <net/if_clone.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_media.h> 53 #include <net/if_types.h> 54 #include <net/if_var.h> 55 #include <net/if_private.h> 56 #include <net/bpf.h> 57 #include <net/route.h> 58 #include <net/vnet.h> 59 #include <net/infiniband.h> 60 61 #if defined(INET) || defined(INET6) 62 #include <netinet/in.h> 63 #include <netinet/ip.h> 64 #endif 65 #ifdef INET 66 #include <netinet/in_systm.h> 67 #include <netinet/if_ether.h> 68 #endif 69 70 #ifdef INET6 71 #include <netinet/ip6.h> 72 #include <netinet6/in6_var.h> 73 #include <netinet6/in6_ifattach.h> 74 #endif 75 76 #include <net/if_vlan_var.h> 77 #include <net/if_lagg.h> 78 #include <net/ieee8023ad_lacp.h> 79 80 #ifdef DEV_NETMAP 81 MODULE_DEPEND(if_lagg, netmap, 1, 1, 1); 82 #endif 83 84 #define LAGG_SX_INIT(_sc) sx_init(&(_sc)->sc_sx, "if_lagg sx") 85 #define LAGG_SX_DESTROY(_sc) sx_destroy(&(_sc)->sc_sx) 86 #define LAGG_XLOCK(_sc) sx_xlock(&(_sc)->sc_sx) 87 #define LAGG_XUNLOCK(_sc) sx_xunlock(&(_sc)->sc_sx) 88 #define LAGG_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED) 89 #define LAGG_XLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_XLOCKED) 90 91 /* Special flags we should propagate to the lagg ports. */ 92 static struct { 93 int flag; 94 int (*func)(struct ifnet *, int); 95 } lagg_pflags[] = { 96 {IFF_PROMISC, ifpromisc}, 97 {IFF_ALLMULTI, if_allmulti}, 98 {0, NULL} 99 }; 100 101 struct lagg_snd_tag { 102 struct m_snd_tag com; 103 struct m_snd_tag *tag; 104 }; 105 106 VNET_DEFINE(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */ 107 #define V_lagg_list VNET(lagg_list) 108 VNET_DEFINE_STATIC(struct mtx, lagg_list_mtx); 109 #define V_lagg_list_mtx VNET(lagg_list_mtx) 110 #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \ 111 "if_lagg list", NULL, MTX_DEF) 112 #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx) 113 #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx) 114 #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_lagg_list_mtx) 115 eventhandler_tag lagg_detach_cookie = NULL; 116 117 static int lagg_clone_create(struct if_clone *, char *, size_t, 118 struct ifc_data *, struct ifnet **); 119 static int lagg_clone_destroy(struct if_clone *, struct ifnet *, uint32_t); 120 VNET_DEFINE_STATIC(struct if_clone *, lagg_cloner); 121 #define V_lagg_cloner VNET(lagg_cloner) 122 static const char laggname[] = "lagg"; 123 static MALLOC_DEFINE(M_LAGG, laggname, "802.3AD Link Aggregation Interface"); 124 125 static void lagg_capabilities(struct lagg_softc *); 126 static int lagg_port_create(struct lagg_softc *, struct ifnet *); 127 static int lagg_port_destroy(struct lagg_port *, int); 128 static struct mbuf *lagg_input_ethernet(struct ifnet *, struct mbuf *); 129 static struct mbuf *lagg_input_infiniband(struct ifnet *, struct mbuf *); 130 static void lagg_linkstate(struct lagg_softc *); 131 static void lagg_port_state(struct ifnet *, int); 132 static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t); 133 static int lagg_port_output(struct ifnet *, struct mbuf *, 134 const struct sockaddr *, struct route *); 135 static void lagg_port_ifdetach(void *arg __unused, struct ifnet *); 136 #ifdef LAGG_PORT_STACKING 137 static int lagg_port_checkstacking(struct lagg_softc *); 138 #endif 139 static void lagg_port2req(struct lagg_port *, struct lagg_reqport *); 140 static void lagg_init(void *); 141 static void lagg_stop(struct lagg_softc *); 142 static int lagg_ioctl(struct ifnet *, u_long, caddr_t); 143 #if defined(KERN_TLS) || defined(RATELIMIT) 144 static int lagg_snd_tag_alloc(struct ifnet *, 145 union if_snd_tag_alloc_params *, 146 struct m_snd_tag **); 147 static int lagg_snd_tag_modify(struct m_snd_tag *, 148 union if_snd_tag_modify_params *); 149 static int lagg_snd_tag_query(struct m_snd_tag *, 150 union if_snd_tag_query_params *); 151 static void lagg_snd_tag_free(struct m_snd_tag *); 152 static struct m_snd_tag *lagg_next_snd_tag(struct m_snd_tag *); 153 static void lagg_ratelimit_query(struct ifnet *, 154 struct if_ratelimit_query_results *); 155 #endif 156 static int lagg_setmulti(struct lagg_port *); 157 static int lagg_clrmulti(struct lagg_port *); 158 static void lagg_setcaps(struct lagg_port *, int cap, int cap2); 159 static int lagg_setflag(struct lagg_port *, int, int, 160 int (*func)(struct ifnet *, int)); 161 static int lagg_setflags(struct lagg_port *, int status); 162 static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt); 163 static int lagg_transmit_ethernet(struct ifnet *, struct mbuf *); 164 static int lagg_transmit_infiniband(struct ifnet *, struct mbuf *); 165 static void lagg_qflush(struct ifnet *); 166 static int lagg_media_change(struct ifnet *); 167 static void lagg_media_status(struct ifnet *, struct ifmediareq *); 168 static struct lagg_port *lagg_link_active(struct lagg_softc *, 169 struct lagg_port *); 170 171 /* Simple round robin */ 172 static void lagg_rr_attach(struct lagg_softc *); 173 static int lagg_rr_start(struct lagg_softc *, struct mbuf *); 174 static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *, 175 struct mbuf *); 176 177 /* Active failover */ 178 static int lagg_fail_start(struct lagg_softc *, struct mbuf *); 179 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *, 180 struct mbuf *); 181 182 /* Loadbalancing */ 183 static void lagg_lb_attach(struct lagg_softc *); 184 static void lagg_lb_detach(struct lagg_softc *); 185 static int lagg_lb_port_create(struct lagg_port *); 186 static void lagg_lb_port_destroy(struct lagg_port *); 187 static int lagg_lb_start(struct lagg_softc *, struct mbuf *); 188 static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *, 189 struct mbuf *); 190 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *); 191 192 /* Broadcast */ 193 static int lagg_bcast_start(struct lagg_softc *, struct mbuf *); 194 static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *, 195 struct mbuf *); 196 197 /* 802.3ad LACP */ 198 static void lagg_lacp_attach(struct lagg_softc *); 199 static void lagg_lacp_detach(struct lagg_softc *); 200 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *); 201 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *, 202 struct mbuf *); 203 static void lagg_lacp_lladdr(struct lagg_softc *); 204 205 /* lagg protocol table */ 206 static const struct lagg_proto { 207 lagg_proto pr_num; 208 void (*pr_attach)(struct lagg_softc *); 209 void (*pr_detach)(struct lagg_softc *); 210 int (*pr_start)(struct lagg_softc *, struct mbuf *); 211 struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *, 212 struct mbuf *); 213 int (*pr_addport)(struct lagg_port *); 214 void (*pr_delport)(struct lagg_port *); 215 void (*pr_linkstate)(struct lagg_port *); 216 void (*pr_init)(struct lagg_softc *); 217 void (*pr_stop)(struct lagg_softc *); 218 void (*pr_lladdr)(struct lagg_softc *); 219 void (*pr_request)(struct lagg_softc *, void *); 220 void (*pr_portreq)(struct lagg_port *, void *); 221 } lagg_protos[] = { 222 { 223 .pr_num = LAGG_PROTO_NONE 224 }, 225 { 226 .pr_num = LAGG_PROTO_ROUNDROBIN, 227 .pr_attach = lagg_rr_attach, 228 .pr_start = lagg_rr_start, 229 .pr_input = lagg_rr_input, 230 }, 231 { 232 .pr_num = LAGG_PROTO_FAILOVER, 233 .pr_start = lagg_fail_start, 234 .pr_input = lagg_fail_input, 235 }, 236 { 237 .pr_num = LAGG_PROTO_LOADBALANCE, 238 .pr_attach = lagg_lb_attach, 239 .pr_detach = lagg_lb_detach, 240 .pr_start = lagg_lb_start, 241 .pr_input = lagg_lb_input, 242 .pr_addport = lagg_lb_port_create, 243 .pr_delport = lagg_lb_port_destroy, 244 }, 245 { 246 .pr_num = LAGG_PROTO_LACP, 247 .pr_attach = lagg_lacp_attach, 248 .pr_detach = lagg_lacp_detach, 249 .pr_start = lagg_lacp_start, 250 .pr_input = lagg_lacp_input, 251 .pr_addport = lacp_port_create, 252 .pr_delport = lacp_port_destroy, 253 .pr_linkstate = lacp_linkstate, 254 .pr_init = lacp_init, 255 .pr_stop = lacp_stop, 256 .pr_lladdr = lagg_lacp_lladdr, 257 .pr_request = lacp_req, 258 .pr_portreq = lacp_portreq, 259 }, 260 { 261 .pr_num = LAGG_PROTO_BROADCAST, 262 .pr_start = lagg_bcast_start, 263 .pr_input = lagg_bcast_input, 264 }, 265 }; 266 267 SYSCTL_DECL(_net_link); 268 SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 269 "Link Aggregation"); 270 271 /* Allow input on any failover links */ 272 VNET_DEFINE_STATIC(int, lagg_failover_rx_all); 273 #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all) 274 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET, 275 &VNET_NAME(lagg_failover_rx_all), 0, 276 "Accept input from any interface in a failover lagg"); 277 278 /* Default value for using flowid */ 279 VNET_DEFINE_STATIC(int, def_use_flowid) = 0; 280 #define V_def_use_flowid VNET(def_use_flowid) 281 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN, 282 &VNET_NAME(def_use_flowid), 0, 283 "Default setting for using flow id for load sharing"); 284 285 /* Default value for using numa */ 286 VNET_DEFINE_STATIC(int, def_use_numa) = 1; 287 #define V_def_use_numa VNET(def_use_numa) 288 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_numa, CTLFLAG_RWTUN, 289 &VNET_NAME(def_use_numa), 0, 290 "Use numa to steer flows"); 291 292 /* Default value for flowid shift */ 293 VNET_DEFINE_STATIC(int, def_flowid_shift) = 16; 294 #define V_def_flowid_shift VNET(def_flowid_shift) 295 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN, 296 &VNET_NAME(def_flowid_shift), 0, 297 "Default setting for flowid shift for load sharing"); 298 299 static void 300 vnet_lagg_init(const void *unused __unused) 301 { 302 303 LAGG_LIST_LOCK_INIT(); 304 SLIST_INIT(&V_lagg_list); 305 struct if_clone_addreq req = { 306 .create_f = lagg_clone_create, 307 .destroy_f = lagg_clone_destroy, 308 .flags = IFC_F_AUTOUNIT, 309 }; 310 V_lagg_cloner = ifc_attach_cloner(laggname, &req); 311 } 312 VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY, 313 vnet_lagg_init, NULL); 314 315 static void 316 vnet_lagg_uninit(const void *unused __unused) 317 { 318 319 ifc_detach_cloner(V_lagg_cloner); 320 LAGG_LIST_LOCK_DESTROY(); 321 } 322 VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY, 323 vnet_lagg_uninit, NULL); 324 325 static int 326 lagg_modevent(module_t mod, int type, void *data) 327 { 328 329 switch (type) { 330 case MOD_LOAD: 331 lagg_input_ethernet_p = lagg_input_ethernet; 332 lagg_input_infiniband_p = lagg_input_infiniband; 333 lagg_linkstate_p = lagg_port_state; 334 lagg_detach_cookie = EVENTHANDLER_REGISTER( 335 ifnet_departure_event, lagg_port_ifdetach, NULL, 336 EVENTHANDLER_PRI_ANY); 337 break; 338 case MOD_UNLOAD: 339 EVENTHANDLER_DEREGISTER(ifnet_departure_event, 340 lagg_detach_cookie); 341 lagg_input_ethernet_p = NULL; 342 lagg_input_infiniband_p = NULL; 343 lagg_linkstate_p = NULL; 344 break; 345 default: 346 return (EOPNOTSUPP); 347 } 348 return (0); 349 } 350 351 static moduledata_t lagg_mod = { 352 "if_lagg", 353 lagg_modevent, 354 0 355 }; 356 357 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 358 MODULE_VERSION(if_lagg, 1); 359 MODULE_DEPEND(if_lagg, if_infiniband, 1, 1, 1); 360 361 static void 362 lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr) 363 { 364 365 LAGG_XLOCK_ASSERT(sc); 366 KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto", 367 __func__, sc)); 368 369 if (sc->sc_ifflags & IFF_DEBUG) 370 if_printf(sc->sc_ifp, "using proto %u\n", pr); 371 372 if (lagg_protos[pr].pr_attach != NULL) 373 lagg_protos[pr].pr_attach(sc); 374 sc->sc_proto = pr; 375 } 376 377 static void 378 lagg_proto_detach(struct lagg_softc *sc) 379 { 380 lagg_proto pr; 381 382 LAGG_XLOCK_ASSERT(sc); 383 pr = sc->sc_proto; 384 sc->sc_proto = LAGG_PROTO_NONE; 385 386 if (lagg_protos[pr].pr_detach != NULL) 387 lagg_protos[pr].pr_detach(sc); 388 } 389 390 static int 391 lagg_proto_start(struct lagg_softc *sc, struct mbuf *m) 392 { 393 394 return (lagg_protos[sc->sc_proto].pr_start(sc, m)); 395 } 396 397 static struct mbuf * 398 lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 399 { 400 401 return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m)); 402 } 403 404 static int 405 lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp) 406 { 407 408 if (lagg_protos[sc->sc_proto].pr_addport == NULL) 409 return (0); 410 else 411 return (lagg_protos[sc->sc_proto].pr_addport(lp)); 412 } 413 414 static void 415 lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp) 416 { 417 418 if (lagg_protos[sc->sc_proto].pr_delport != NULL) 419 lagg_protos[sc->sc_proto].pr_delport(lp); 420 } 421 422 static void 423 lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp) 424 { 425 426 if (lagg_protos[sc->sc_proto].pr_linkstate != NULL) 427 lagg_protos[sc->sc_proto].pr_linkstate(lp); 428 } 429 430 static void 431 lagg_proto_init(struct lagg_softc *sc) 432 { 433 434 if (lagg_protos[sc->sc_proto].pr_init != NULL) 435 lagg_protos[sc->sc_proto].pr_init(sc); 436 } 437 438 static void 439 lagg_proto_stop(struct lagg_softc *sc) 440 { 441 442 if (lagg_protos[sc->sc_proto].pr_stop != NULL) 443 lagg_protos[sc->sc_proto].pr_stop(sc); 444 } 445 446 static void 447 lagg_proto_lladdr(struct lagg_softc *sc) 448 { 449 450 if (lagg_protos[sc->sc_proto].pr_lladdr != NULL) 451 lagg_protos[sc->sc_proto].pr_lladdr(sc); 452 } 453 454 static void 455 lagg_proto_request(struct lagg_softc *sc, void *v) 456 { 457 458 if (lagg_protos[sc->sc_proto].pr_request != NULL) 459 lagg_protos[sc->sc_proto].pr_request(sc, v); 460 } 461 462 static void 463 lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v) 464 { 465 466 if (lagg_protos[sc->sc_proto].pr_portreq != NULL) 467 lagg_protos[sc->sc_proto].pr_portreq(lp, v); 468 } 469 470 /* 471 * This routine is run via an vlan 472 * config EVENT 473 */ 474 static void 475 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) 476 { 477 struct lagg_softc *sc = ifp->if_softc; 478 struct lagg_port *lp; 479 480 if (ifp->if_softc != arg) /* Not our event */ 481 return; 482 483 LAGG_XLOCK(sc); 484 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 485 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag); 486 LAGG_XUNLOCK(sc); 487 } 488 489 /* 490 * This routine is run via an vlan 491 * unconfig EVENT 492 */ 493 static void 494 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) 495 { 496 struct lagg_softc *sc = ifp->if_softc; 497 struct lagg_port *lp; 498 499 if (ifp->if_softc != arg) /* Not our event */ 500 return; 501 502 LAGG_XLOCK(sc); 503 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 504 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag); 505 LAGG_XUNLOCK(sc); 506 } 507 508 static int 509 lagg_clone_create(struct if_clone *ifc, char *name, size_t len, 510 struct ifc_data *ifd, struct ifnet **ifpp) 511 { 512 struct iflaggparam iflp; 513 struct lagg_softc *sc; 514 struct ifnet *ifp; 515 int if_type; 516 int error; 517 static const uint8_t eaddr[LAGG_ADDR_LEN]; 518 519 if (ifd->params != NULL) { 520 error = ifc_copyin(ifd, &iflp, sizeof(iflp)); 521 if (error) 522 return (error); 523 524 switch (iflp.lagg_type) { 525 case LAGG_TYPE_ETHERNET: 526 if_type = IFT_ETHER; 527 break; 528 case LAGG_TYPE_INFINIBAND: 529 if_type = IFT_INFINIBAND; 530 break; 531 default: 532 return (EINVAL); 533 } 534 } else { 535 if_type = IFT_ETHER; 536 } 537 538 sc = malloc(sizeof(*sc), M_LAGG, M_WAITOK|M_ZERO); 539 ifp = sc->sc_ifp = if_alloc(if_type); 540 if (ifp == NULL) { 541 free(sc, M_LAGG); 542 return (ENOSPC); 543 } 544 LAGG_SX_INIT(sc); 545 546 mtx_init(&sc->sc_mtx, "lagg-mtx", NULL, MTX_DEF); 547 callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 548 549 LAGG_XLOCK(sc); 550 if (V_def_use_flowid) 551 sc->sc_opts |= LAGG_OPT_USE_FLOWID; 552 if (V_def_use_numa) 553 sc->sc_opts |= LAGG_OPT_USE_NUMA; 554 sc->flowid_shift = V_def_flowid_shift; 555 556 /* Hash all layers by default */ 557 sc->sc_flags = MBUF_HASHFLAG_L2|MBUF_HASHFLAG_L3|MBUF_HASHFLAG_L4; 558 559 lagg_proto_attach(sc, LAGG_PROTO_DEFAULT); 560 561 CK_SLIST_INIT(&sc->sc_ports); 562 563 switch (if_type) { 564 case IFT_ETHER: 565 /* Initialise pseudo media types */ 566 ifmedia_init(&sc->sc_media, 0, lagg_media_change, 567 lagg_media_status); 568 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); 569 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); 570 571 if_initname(ifp, laggname, ifd->unit); 572 ifp->if_transmit = lagg_transmit_ethernet; 573 break; 574 case IFT_INFINIBAND: 575 if_initname(ifp, laggname, ifd->unit); 576 ifp->if_transmit = lagg_transmit_infiniband; 577 break; 578 default: 579 break; 580 } 581 ifp->if_softc = sc; 582 ifp->if_qflush = lagg_qflush; 583 ifp->if_init = lagg_init; 584 ifp->if_ioctl = lagg_ioctl; 585 ifp->if_get_counter = lagg_get_counter; 586 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 587 #if defined(KERN_TLS) || defined(RATELIMIT) 588 ifp->if_snd_tag_alloc = lagg_snd_tag_alloc; 589 ifp->if_ratelimit_query = lagg_ratelimit_query; 590 #endif 591 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS; 592 593 /* 594 * Attach as an ordinary ethernet device, children will be attached 595 * as special device IFT_IEEE8023ADLAG or IFT_INFINIBANDLAG. 596 */ 597 switch (if_type) { 598 case IFT_ETHER: 599 ether_ifattach(ifp, eaddr); 600 break; 601 case IFT_INFINIBAND: 602 infiniband_ifattach(ifp, eaddr, sc->sc_bcast_addr); 603 break; 604 default: 605 break; 606 } 607 608 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 609 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST); 610 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 611 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST); 612 613 /* Insert into the global list of laggs */ 614 LAGG_LIST_LOCK(); 615 SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries); 616 LAGG_LIST_UNLOCK(); 617 LAGG_XUNLOCK(sc); 618 *ifpp = ifp; 619 620 return (0); 621 } 622 623 static int 624 lagg_clone_destroy(struct if_clone *ifc, struct ifnet *ifp, uint32_t flags) 625 { 626 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 627 struct lagg_port *lp; 628 629 LAGG_XLOCK(sc); 630 sc->sc_destroying = 1; 631 lagg_stop(sc); 632 ifp->if_flags &= ~IFF_UP; 633 634 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach); 635 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach); 636 637 /* Shutdown and remove lagg ports */ 638 while ((lp = CK_SLIST_FIRST(&sc->sc_ports)) != NULL) 639 lagg_port_destroy(lp, 1); 640 641 /* Unhook the aggregation protocol */ 642 lagg_proto_detach(sc); 643 LAGG_XUNLOCK(sc); 644 645 switch (ifp->if_type) { 646 case IFT_ETHER: 647 ifmedia_removeall(&sc->sc_media); 648 ether_ifdetach(ifp); 649 break; 650 case IFT_INFINIBAND: 651 infiniband_ifdetach(ifp); 652 break; 653 default: 654 break; 655 } 656 if_free(ifp); 657 658 LAGG_LIST_LOCK(); 659 SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries); 660 LAGG_LIST_UNLOCK(); 661 662 mtx_destroy(&sc->sc_mtx); 663 LAGG_SX_DESTROY(sc); 664 free(sc, M_LAGG); 665 666 return (0); 667 } 668 669 static void 670 lagg_capabilities(struct lagg_softc *sc) 671 { 672 struct lagg_port *lp; 673 int cap, cap2, ena, ena2, pena, pena2; 674 uint64_t hwa; 675 struct ifnet_hw_tsomax hw_tsomax; 676 677 LAGG_XLOCK_ASSERT(sc); 678 679 /* Get common enabled capabilities for the lagg ports */ 680 ena = ena2 = ~0; 681 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 682 ena &= lp->lp_ifp->if_capenable; 683 ena2 &= lp->lp_ifp->if_capenable2; 684 } 685 if (CK_SLIST_FIRST(&sc->sc_ports) == NULL) 686 ena = ena2 = 0; 687 688 /* 689 * Apply common enabled capabilities back to the lagg ports. 690 * May require several iterations if they are dependent. 691 */ 692 do { 693 pena = ena; 694 pena2 = ena2; 695 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 696 lagg_setcaps(lp, ena, ena2); 697 ena &= lp->lp_ifp->if_capenable; 698 ena2 &= lp->lp_ifp->if_capenable2; 699 } 700 } while (pena != ena || pena2 != ena2); 701 702 /* Get other capabilities from the lagg ports */ 703 cap = cap2 = ~0; 704 hwa = ~(uint64_t)0; 705 memset(&hw_tsomax, 0, sizeof(hw_tsomax)); 706 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 707 cap &= lp->lp_ifp->if_capabilities; 708 cap2 &= lp->lp_ifp->if_capabilities2; 709 hwa &= lp->lp_ifp->if_hwassist; 710 if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax); 711 } 712 if (CK_SLIST_FIRST(&sc->sc_ports) == NULL) 713 cap = cap2 = hwa = 0; 714 715 if (sc->sc_ifp->if_capabilities != cap || 716 sc->sc_ifp->if_capenable != ena || 717 sc->sc_ifp->if_capenable2 != ena2 || 718 sc->sc_ifp->if_hwassist != hwa || 719 if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) { 720 sc->sc_ifp->if_capabilities = cap; 721 sc->sc_ifp->if_capabilities2 = cap2; 722 sc->sc_ifp->if_capenable = ena; 723 sc->sc_ifp->if_capenable2 = ena2; 724 sc->sc_ifp->if_hwassist = hwa; 725 getmicrotime(&sc->sc_ifp->if_lastchange); 726 727 if (sc->sc_ifflags & IFF_DEBUG) 728 if_printf(sc->sc_ifp, 729 "capabilities 0x%08x enabled 0x%08x\n", cap, ena); 730 } 731 } 732 733 static int 734 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp) 735 { 736 struct lagg_softc *sc_ptr; 737 struct lagg_port *lp, *tlp; 738 struct ifreq ifr; 739 int error, i, oldmtu; 740 int if_type; 741 uint64_t *pval; 742 743 LAGG_XLOCK_ASSERT(sc); 744 745 if (sc->sc_ifp == ifp) { 746 if_printf(sc->sc_ifp, 747 "cannot add a lagg to itself as a port\n"); 748 return (EINVAL); 749 } 750 751 if (sc->sc_destroying == 1) 752 return (ENXIO); 753 754 /* Limit the maximal number of lagg ports */ 755 if (sc->sc_count >= LAGG_MAX_PORTS) 756 return (ENOSPC); 757 758 /* Check if port has already been associated to a lagg */ 759 if (ifp->if_lagg != NULL) { 760 /* Port is already in the current lagg? */ 761 lp = (struct lagg_port *)ifp->if_lagg; 762 if (lp->lp_softc == sc) 763 return (EEXIST); 764 return (EBUSY); 765 } 766 767 switch (sc->sc_ifp->if_type) { 768 case IFT_ETHER: 769 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */ 770 if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN) 771 return (EPROTONOSUPPORT); 772 if_type = IFT_IEEE8023ADLAG; 773 break; 774 case IFT_INFINIBAND: 775 /* XXX Disallow non-infiniband interfaces */ 776 if (ifp->if_type != IFT_INFINIBAND) 777 return (EPROTONOSUPPORT); 778 if_type = IFT_INFINIBANDLAG; 779 break; 780 default: 781 break; 782 } 783 784 /* Allow the first Ethernet member to define the MTU */ 785 oldmtu = -1; 786 if (CK_SLIST_EMPTY(&sc->sc_ports)) { 787 sc->sc_ifp->if_mtu = ifp->if_mtu; 788 } else if (sc->sc_ifp->if_mtu != ifp->if_mtu) { 789 if (ifp->if_ioctl == NULL) { 790 if_printf(sc->sc_ifp, "cannot change MTU for %s\n", 791 ifp->if_xname); 792 return (EINVAL); 793 } 794 oldmtu = ifp->if_mtu; 795 strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name)); 796 ifr.ifr_mtu = sc->sc_ifp->if_mtu; 797 error = (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr); 798 if (error != 0) { 799 if_printf(sc->sc_ifp, "invalid MTU for %s\n", 800 ifp->if_xname); 801 return (error); 802 } 803 ifr.ifr_mtu = oldmtu; 804 } 805 806 lp = malloc(sizeof(struct lagg_port), M_LAGG, M_WAITOK|M_ZERO); 807 lp->lp_softc = sc; 808 809 /* Check if port is a stacked lagg */ 810 LAGG_LIST_LOCK(); 811 SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) { 812 if (ifp == sc_ptr->sc_ifp) { 813 LAGG_LIST_UNLOCK(); 814 free(lp, M_LAGG); 815 if (oldmtu != -1) 816 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, 817 (caddr_t)&ifr); 818 return (EINVAL); 819 /* XXX disable stacking for the moment, its untested */ 820 #ifdef LAGG_PORT_STACKING 821 lp->lp_flags |= LAGG_PORT_STACK; 822 if (lagg_port_checkstacking(sc_ptr) >= 823 LAGG_MAX_STACKING) { 824 LAGG_LIST_UNLOCK(); 825 free(lp, M_LAGG); 826 if (oldmtu != -1) 827 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, 828 (caddr_t)&ifr); 829 return (E2BIG); 830 } 831 #endif 832 } 833 } 834 LAGG_LIST_UNLOCK(); 835 836 if_ref(ifp); 837 lp->lp_ifp = ifp; 838 839 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ifp->if_addrlen); 840 lp->lp_ifcapenable = ifp->if_capenable; 841 if (CK_SLIST_EMPTY(&sc->sc_ports)) { 842 bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ifp->if_addrlen); 843 lagg_proto_lladdr(sc); 844 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp); 845 } else { 846 if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ifp->if_addrlen); 847 } 848 lagg_setflags(lp, 1); 849 850 if (CK_SLIST_EMPTY(&sc->sc_ports)) 851 sc->sc_primary = lp; 852 853 /* Change the interface type */ 854 lp->lp_iftype = ifp->if_type; 855 ifp->if_type = if_type; 856 ifp->if_lagg = lp; 857 lp->lp_ioctl = ifp->if_ioctl; 858 ifp->if_ioctl = lagg_port_ioctl; 859 lp->lp_output = ifp->if_output; 860 ifp->if_output = lagg_port_output; 861 862 /* Read port counters */ 863 pval = lp->port_counters.val; 864 for (i = 0; i < IFCOUNTERS; i++, pval++) 865 *pval = ifp->if_get_counter(ifp, i); 866 867 /* 868 * Insert into the list of ports. 869 * Keep ports sorted by if_index. It is handy, when configuration 870 * is predictable and `ifconfig laggN create ...` command 871 * will lead to the same result each time. 872 */ 873 CK_SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) { 874 if (tlp->lp_ifp->if_index < ifp->if_index && ( 875 CK_SLIST_NEXT(tlp, lp_entries) == NULL || 876 ((struct lagg_port*)CK_SLIST_NEXT(tlp, lp_entries))->lp_ifp->if_index > 877 ifp->if_index)) 878 break; 879 } 880 if (tlp != NULL) 881 CK_SLIST_INSERT_AFTER(tlp, lp, lp_entries); 882 else 883 CK_SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries); 884 sc->sc_count++; 885 886 lagg_setmulti(lp); 887 888 if ((error = lagg_proto_addport(sc, lp)) != 0) { 889 /* Remove the port, without calling pr_delport. */ 890 lagg_port_destroy(lp, 0); 891 if (oldmtu != -1) 892 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr); 893 return (error); 894 } 895 896 /* Update lagg capabilities */ 897 lagg_capabilities(sc); 898 lagg_linkstate(sc); 899 900 return (0); 901 } 902 903 #ifdef LAGG_PORT_STACKING 904 static int 905 lagg_port_checkstacking(struct lagg_softc *sc) 906 { 907 struct lagg_softc *sc_ptr; 908 struct lagg_port *lp; 909 int m = 0; 910 911 LAGG_SXLOCK_ASSERT(sc); 912 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 913 if (lp->lp_flags & LAGG_PORT_STACK) { 914 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc; 915 m = MAX(m, lagg_port_checkstacking(sc_ptr)); 916 } 917 } 918 919 return (m + 1); 920 } 921 #endif 922 923 static void 924 lagg_port_destroy_cb(epoch_context_t ec) 925 { 926 struct lagg_port *lp; 927 struct ifnet *ifp; 928 929 lp = __containerof(ec, struct lagg_port, lp_epoch_ctx); 930 ifp = lp->lp_ifp; 931 932 if_rele(ifp); 933 free(lp, M_LAGG); 934 } 935 936 static int 937 lagg_port_destroy(struct lagg_port *lp, int rundelport) 938 { 939 struct lagg_softc *sc = lp->lp_softc; 940 struct lagg_port *lp_ptr, *lp0; 941 struct ifnet *ifp = lp->lp_ifp; 942 uint64_t *pval, vdiff; 943 int i; 944 945 LAGG_XLOCK_ASSERT(sc); 946 947 if (rundelport) 948 lagg_proto_delport(sc, lp); 949 950 if (lp->lp_detaching == 0) 951 lagg_clrmulti(lp); 952 953 /* Restore interface */ 954 ifp->if_type = lp->lp_iftype; 955 ifp->if_ioctl = lp->lp_ioctl; 956 ifp->if_output = lp->lp_output; 957 ifp->if_lagg = NULL; 958 959 /* Update detached port counters */ 960 pval = lp->port_counters.val; 961 for (i = 0; i < IFCOUNTERS; i++, pval++) { 962 vdiff = ifp->if_get_counter(ifp, i) - *pval; 963 sc->detached_counters.val[i] += vdiff; 964 } 965 966 /* Finally, remove the port from the lagg */ 967 CK_SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries); 968 sc->sc_count--; 969 970 /* Update the primary interface */ 971 if (lp == sc->sc_primary) { 972 uint8_t lladdr[LAGG_ADDR_LEN]; 973 974 if ((lp0 = CK_SLIST_FIRST(&sc->sc_ports)) == NULL) 975 bzero(&lladdr, LAGG_ADDR_LEN); 976 else 977 bcopy(lp0->lp_lladdr, lladdr, LAGG_ADDR_LEN); 978 sc->sc_primary = lp0; 979 if (sc->sc_destroying == 0) { 980 bcopy(lladdr, IF_LLADDR(sc->sc_ifp), sc->sc_ifp->if_addrlen); 981 lagg_proto_lladdr(sc); 982 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp); 983 984 /* 985 * Update lladdr for each port (new primary needs update 986 * as well, to switch from old lladdr to its 'real' one). 987 * We can skip this if the lagg is being destroyed. 988 */ 989 CK_SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries) 990 if_setlladdr(lp_ptr->lp_ifp, lladdr, 991 lp_ptr->lp_ifp->if_addrlen); 992 } 993 } 994 995 if (lp->lp_ifflags) 996 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__); 997 998 if (lp->lp_detaching == 0) { 999 lagg_setflags(lp, 0); 1000 lagg_setcaps(lp, lp->lp_ifcapenable, lp->lp_ifcapenable2); 1001 if_setlladdr(ifp, lp->lp_lladdr, ifp->if_addrlen); 1002 } 1003 1004 /* 1005 * free port and release it's ifnet reference after a grace period has 1006 * elapsed. 1007 */ 1008 NET_EPOCH_CALL(lagg_port_destroy_cb, &lp->lp_epoch_ctx); 1009 /* Update lagg capabilities */ 1010 lagg_capabilities(sc); 1011 lagg_linkstate(sc); 1012 1013 return (0); 1014 } 1015 1016 static int 1017 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1018 { 1019 struct epoch_tracker et; 1020 struct lagg_reqport *rp = (struct lagg_reqport *)data; 1021 struct lagg_softc *sc; 1022 struct lagg_port *lp = NULL; 1023 int error = 0; 1024 1025 /* Should be checked by the caller */ 1026 switch (ifp->if_type) { 1027 case IFT_IEEE8023ADLAG: 1028 case IFT_INFINIBANDLAG: 1029 if ((lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL) 1030 goto fallback; 1031 break; 1032 default: 1033 goto fallback; 1034 } 1035 1036 switch (cmd) { 1037 case SIOCGLAGGPORT: 1038 if (rp->rp_portname[0] == '\0' || 1039 ifunit(rp->rp_portname) != ifp) { 1040 error = EINVAL; 1041 break; 1042 } 1043 1044 NET_EPOCH_ENTER(et); 1045 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) { 1046 error = ENOENT; 1047 NET_EPOCH_EXIT(et); 1048 break; 1049 } 1050 1051 lagg_port2req(lp, rp); 1052 NET_EPOCH_EXIT(et); 1053 break; 1054 1055 case SIOCSIFCAP: 1056 case SIOCSIFCAPNV: 1057 if (lp->lp_ioctl == NULL) { 1058 error = EINVAL; 1059 break; 1060 } 1061 error = (*lp->lp_ioctl)(ifp, cmd, data); 1062 if (error) 1063 break; 1064 1065 /* Update lagg interface capabilities */ 1066 LAGG_XLOCK(sc); 1067 lagg_capabilities(sc); 1068 LAGG_XUNLOCK(sc); 1069 VLAN_CAPABILITIES(sc->sc_ifp); 1070 break; 1071 1072 case SIOCSIFMTU: 1073 /* Do not allow the MTU to be changed once joined */ 1074 error = EINVAL; 1075 break; 1076 1077 default: 1078 goto fallback; 1079 } 1080 1081 return (error); 1082 1083 fallback: 1084 if (lp != NULL && lp->lp_ioctl != NULL) 1085 return ((*lp->lp_ioctl)(ifp, cmd, data)); 1086 1087 return (EINVAL); 1088 } 1089 1090 /* 1091 * Requests counter @cnt data. 1092 * 1093 * Counter value is calculated the following way: 1094 * 1) for each port, sum difference between current and "initial" measurements. 1095 * 2) add lagg logical interface counters. 1096 * 3) add data from detached_counters array. 1097 * 1098 * We also do the following things on ports attach/detach: 1099 * 1) On port attach we store all counters it has into port_counter array. 1100 * 2) On port detach we add the different between "initial" and 1101 * current counters data to detached_counters array. 1102 */ 1103 static uint64_t 1104 lagg_get_counter(struct ifnet *ifp, ift_counter cnt) 1105 { 1106 struct epoch_tracker et; 1107 struct lagg_softc *sc; 1108 struct lagg_port *lp; 1109 struct ifnet *lpifp; 1110 uint64_t newval, oldval, vsum; 1111 1112 /* Revise this when we've got non-generic counters. */ 1113 KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt)); 1114 1115 sc = (struct lagg_softc *)ifp->if_softc; 1116 1117 vsum = 0; 1118 NET_EPOCH_ENTER(et); 1119 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1120 /* Saved attached value */ 1121 oldval = lp->port_counters.val[cnt]; 1122 /* current value */ 1123 lpifp = lp->lp_ifp; 1124 newval = lpifp->if_get_counter(lpifp, cnt); 1125 /* Calculate diff and save new */ 1126 vsum += newval - oldval; 1127 } 1128 NET_EPOCH_EXIT(et); 1129 1130 /* 1131 * Add counter data which might be added by upper 1132 * layer protocols operating on logical interface. 1133 */ 1134 vsum += if_get_counter_default(ifp, cnt); 1135 1136 /* 1137 * Add counter data from detached ports counters 1138 */ 1139 vsum += sc->detached_counters.val[cnt]; 1140 1141 return (vsum); 1142 } 1143 1144 /* 1145 * For direct output to child ports. 1146 */ 1147 static int 1148 lagg_port_output(struct ifnet *ifp, struct mbuf *m, 1149 const struct sockaddr *dst, struct route *ro) 1150 { 1151 struct lagg_port *lp = ifp->if_lagg; 1152 1153 switch (dst->sa_family) { 1154 case pseudo_AF_HDRCMPLT: 1155 case AF_UNSPEC: 1156 if (lp != NULL) 1157 return ((*lp->lp_output)(ifp, m, dst, ro)); 1158 } 1159 1160 /* drop any other frames */ 1161 m_freem(m); 1162 return (ENETDOWN); 1163 } 1164 1165 static void 1166 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp) 1167 { 1168 struct lagg_port *lp; 1169 struct lagg_softc *sc; 1170 1171 if ((lp = ifp->if_lagg) == NULL) 1172 return; 1173 /* If the ifnet is just being renamed, don't do anything. */ 1174 if (ifp->if_flags & IFF_RENAMING) 1175 return; 1176 1177 sc = lp->lp_softc; 1178 1179 LAGG_XLOCK(sc); 1180 lp->lp_detaching = 1; 1181 lagg_port_destroy(lp, 1); 1182 LAGG_XUNLOCK(sc); 1183 VLAN_CAPABILITIES(sc->sc_ifp); 1184 } 1185 1186 static void 1187 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp) 1188 { 1189 struct lagg_softc *sc = lp->lp_softc; 1190 1191 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname)); 1192 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname)); 1193 rp->rp_prio = lp->lp_prio; 1194 rp->rp_flags = lp->lp_flags; 1195 lagg_proto_portreq(sc, lp, &rp->rp_psc); 1196 1197 /* Add protocol specific flags */ 1198 switch (sc->sc_proto) { 1199 case LAGG_PROTO_FAILOVER: 1200 if (lp == sc->sc_primary) 1201 rp->rp_flags |= LAGG_PORT_MASTER; 1202 if (lp == lagg_link_active(sc, sc->sc_primary)) 1203 rp->rp_flags |= LAGG_PORT_ACTIVE; 1204 break; 1205 1206 case LAGG_PROTO_ROUNDROBIN: 1207 case LAGG_PROTO_LOADBALANCE: 1208 case LAGG_PROTO_BROADCAST: 1209 if (LAGG_PORTACTIVE(lp)) 1210 rp->rp_flags |= LAGG_PORT_ACTIVE; 1211 break; 1212 1213 case LAGG_PROTO_LACP: 1214 /* LACP has a different definition of active */ 1215 if (lacp_isactive(lp)) 1216 rp->rp_flags |= LAGG_PORT_ACTIVE; 1217 if (lacp_iscollecting(lp)) 1218 rp->rp_flags |= LAGG_PORT_COLLECTING; 1219 if (lacp_isdistributing(lp)) 1220 rp->rp_flags |= LAGG_PORT_DISTRIBUTING; 1221 break; 1222 } 1223 1224 } 1225 1226 static void 1227 lagg_watchdog_infiniband(void *arg) 1228 { 1229 struct epoch_tracker et; 1230 struct lagg_softc *sc; 1231 struct lagg_port *lp; 1232 struct ifnet *ifp; 1233 struct ifnet *lp_ifp; 1234 1235 sc = arg; 1236 1237 /* 1238 * Because infiniband nodes have a fixed MAC address, which is 1239 * generated by the so-called GID, we need to regularly update 1240 * the link level address of the parent lagg<N> device when 1241 * the active port changes. Possibly we could piggy-back on 1242 * link up/down events aswell, but using a timer also provides 1243 * a guarantee against too frequent events. This operation 1244 * does not have to be atomic. 1245 */ 1246 NET_EPOCH_ENTER(et); 1247 lp = lagg_link_active(sc, sc->sc_primary); 1248 if (lp != NULL) { 1249 ifp = sc->sc_ifp; 1250 lp_ifp = lp->lp_ifp; 1251 1252 if (ifp != NULL && lp_ifp != NULL && 1253 (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen) != 0 || 1254 memcmp(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen) != 0)) { 1255 memcpy(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen); 1256 memcpy(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen); 1257 1258 CURVNET_SET(ifp->if_vnet); 1259 EVENTHANDLER_INVOKE(iflladdr_event, ifp); 1260 CURVNET_RESTORE(); 1261 } 1262 } 1263 NET_EPOCH_EXIT(et); 1264 1265 callout_reset(&sc->sc_watchdog, hz, &lagg_watchdog_infiniband, arg); 1266 } 1267 1268 static void 1269 lagg_init(void *xsc) 1270 { 1271 struct lagg_softc *sc = (struct lagg_softc *)xsc; 1272 struct ifnet *ifp = sc->sc_ifp; 1273 struct lagg_port *lp; 1274 1275 LAGG_XLOCK(sc); 1276 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1277 LAGG_XUNLOCK(sc); 1278 return; 1279 } 1280 1281 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1282 1283 /* 1284 * Update the port lladdrs if needed. 1285 * This might be if_setlladdr() notification 1286 * that lladdr has been changed. 1287 */ 1288 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1289 if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp), 1290 ifp->if_addrlen) != 0) 1291 if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ifp->if_addrlen); 1292 } 1293 1294 lagg_proto_init(sc); 1295 1296 if (ifp->if_type == IFT_INFINIBAND) { 1297 mtx_lock(&sc->sc_mtx); 1298 lagg_watchdog_infiniband(sc); 1299 mtx_unlock(&sc->sc_mtx); 1300 } 1301 1302 LAGG_XUNLOCK(sc); 1303 } 1304 1305 static void 1306 lagg_stop(struct lagg_softc *sc) 1307 { 1308 struct ifnet *ifp = sc->sc_ifp; 1309 1310 LAGG_XLOCK_ASSERT(sc); 1311 1312 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1313 return; 1314 1315 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1316 1317 lagg_proto_stop(sc); 1318 1319 mtx_lock(&sc->sc_mtx); 1320 callout_stop(&sc->sc_watchdog); 1321 mtx_unlock(&sc->sc_mtx); 1322 1323 callout_drain(&sc->sc_watchdog); 1324 } 1325 1326 static int 1327 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1328 { 1329 struct epoch_tracker et; 1330 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 1331 struct lagg_reqall *ra = (struct lagg_reqall *)data; 1332 struct lagg_reqopts *ro = (struct lagg_reqopts *)data; 1333 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf; 1334 struct lagg_reqflags *rf = (struct lagg_reqflags *)data; 1335 struct ifreq *ifr = (struct ifreq *)data; 1336 struct lagg_port *lp; 1337 struct ifnet *tpif; 1338 struct thread *td = curthread; 1339 char *buf, *outbuf; 1340 int count, buflen, len, error = 0, oldmtu; 1341 1342 bzero(&rpbuf, sizeof(rpbuf)); 1343 1344 /* XXX: This can race with lagg_clone_destroy. */ 1345 1346 switch (cmd) { 1347 case SIOCGLAGG: 1348 LAGG_XLOCK(sc); 1349 buflen = sc->sc_count * sizeof(struct lagg_reqport); 1350 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO); 1351 ra->ra_proto = sc->sc_proto; 1352 lagg_proto_request(sc, &ra->ra_psc); 1353 count = 0; 1354 buf = outbuf; 1355 len = min(ra->ra_size, buflen); 1356 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1357 if (len < sizeof(rpbuf)) 1358 break; 1359 1360 lagg_port2req(lp, &rpbuf); 1361 memcpy(buf, &rpbuf, sizeof(rpbuf)); 1362 count++; 1363 buf += sizeof(rpbuf); 1364 len -= sizeof(rpbuf); 1365 } 1366 LAGG_XUNLOCK(sc); 1367 ra->ra_ports = count; 1368 ra->ra_size = count * sizeof(rpbuf); 1369 error = copyout(outbuf, ra->ra_port, ra->ra_size); 1370 free(outbuf, M_TEMP); 1371 break; 1372 case SIOCSLAGG: 1373 error = priv_check(td, PRIV_NET_LAGG); 1374 if (error) 1375 break; 1376 if (ra->ra_proto >= LAGG_PROTO_MAX) { 1377 error = EPROTONOSUPPORT; 1378 break; 1379 } 1380 /* Infiniband only supports the failover protocol. */ 1381 if (ra->ra_proto != LAGG_PROTO_FAILOVER && 1382 ifp->if_type == IFT_INFINIBAND) { 1383 error = EPROTONOSUPPORT; 1384 break; 1385 } 1386 LAGG_XLOCK(sc); 1387 lagg_proto_detach(sc); 1388 lagg_proto_attach(sc, ra->ra_proto); 1389 LAGG_XUNLOCK(sc); 1390 break; 1391 case SIOCGLAGGOPTS: 1392 LAGG_XLOCK(sc); 1393 ro->ro_opts = sc->sc_opts; 1394 if (sc->sc_proto == LAGG_PROTO_LACP) { 1395 struct lacp_softc *lsc; 1396 1397 lsc = (struct lacp_softc *)sc->sc_psc; 1398 if (lsc->lsc_debug.lsc_tx_test != 0) 1399 ro->ro_opts |= LAGG_OPT_LACP_TXTEST; 1400 if (lsc->lsc_debug.lsc_rx_test != 0) 1401 ro->ro_opts |= LAGG_OPT_LACP_RXTEST; 1402 if (lsc->lsc_strict_mode != 0) 1403 ro->ro_opts |= LAGG_OPT_LACP_STRICT; 1404 if (lsc->lsc_fast_timeout != 0) 1405 ro->ro_opts |= LAGG_OPT_LACP_FAST_TIMO; 1406 1407 ro->ro_active = sc->sc_active; 1408 } else { 1409 ro->ro_active = 0; 1410 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 1411 ro->ro_active += LAGG_PORTACTIVE(lp); 1412 } 1413 ro->ro_bkt = sc->sc_stride; 1414 ro->ro_flapping = sc->sc_flapping; 1415 ro->ro_flowid_shift = sc->flowid_shift; 1416 LAGG_XUNLOCK(sc); 1417 break; 1418 case SIOCSLAGGOPTS: 1419 error = priv_check(td, PRIV_NET_LAGG); 1420 if (error) 1421 break; 1422 1423 /* 1424 * The stride option was added without defining a corresponding 1425 * LAGG_OPT flag, so handle a non-zero value before checking 1426 * anything else to preserve compatibility. 1427 */ 1428 LAGG_XLOCK(sc); 1429 if (ro->ro_opts == 0 && ro->ro_bkt != 0) { 1430 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN) { 1431 LAGG_XUNLOCK(sc); 1432 error = EINVAL; 1433 break; 1434 } 1435 sc->sc_stride = ro->ro_bkt; 1436 } 1437 if (ro->ro_opts == 0) { 1438 LAGG_XUNLOCK(sc); 1439 break; 1440 } 1441 1442 /* 1443 * Set options. LACP options are stored in sc->sc_psc, 1444 * not in sc_opts. 1445 */ 1446 int valid, lacp; 1447 1448 switch (ro->ro_opts) { 1449 case LAGG_OPT_USE_FLOWID: 1450 case -LAGG_OPT_USE_FLOWID: 1451 case LAGG_OPT_USE_NUMA: 1452 case -LAGG_OPT_USE_NUMA: 1453 case LAGG_OPT_FLOWIDSHIFT: 1454 case LAGG_OPT_RR_LIMIT: 1455 valid = 1; 1456 lacp = 0; 1457 break; 1458 case LAGG_OPT_LACP_TXTEST: 1459 case -LAGG_OPT_LACP_TXTEST: 1460 case LAGG_OPT_LACP_RXTEST: 1461 case -LAGG_OPT_LACP_RXTEST: 1462 case LAGG_OPT_LACP_STRICT: 1463 case -LAGG_OPT_LACP_STRICT: 1464 case LAGG_OPT_LACP_FAST_TIMO: 1465 case -LAGG_OPT_LACP_FAST_TIMO: 1466 valid = lacp = 1; 1467 break; 1468 default: 1469 valid = lacp = 0; 1470 break; 1471 } 1472 1473 if (valid == 0 || 1474 (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) { 1475 /* Invalid combination of options specified. */ 1476 error = EINVAL; 1477 LAGG_XUNLOCK(sc); 1478 break; /* Return from SIOCSLAGGOPTS. */ 1479 } 1480 1481 /* 1482 * Store new options into sc->sc_opts except for 1483 * FLOWIDSHIFT, RR and LACP options. 1484 */ 1485 if (lacp == 0) { 1486 if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT) 1487 sc->flowid_shift = ro->ro_flowid_shift; 1488 else if (ro->ro_opts == LAGG_OPT_RR_LIMIT) { 1489 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN || 1490 ro->ro_bkt == 0) { 1491 error = EINVAL; 1492 LAGG_XUNLOCK(sc); 1493 break; 1494 } 1495 sc->sc_stride = ro->ro_bkt; 1496 } else if (ro->ro_opts > 0) 1497 sc->sc_opts |= ro->ro_opts; 1498 else 1499 sc->sc_opts &= ~ro->ro_opts; 1500 } else { 1501 struct lacp_softc *lsc; 1502 struct lacp_port *lp; 1503 1504 lsc = (struct lacp_softc *)sc->sc_psc; 1505 1506 switch (ro->ro_opts) { 1507 case LAGG_OPT_LACP_TXTEST: 1508 lsc->lsc_debug.lsc_tx_test = 1; 1509 break; 1510 case -LAGG_OPT_LACP_TXTEST: 1511 lsc->lsc_debug.lsc_tx_test = 0; 1512 break; 1513 case LAGG_OPT_LACP_RXTEST: 1514 lsc->lsc_debug.lsc_rx_test = 1; 1515 break; 1516 case -LAGG_OPT_LACP_RXTEST: 1517 lsc->lsc_debug.lsc_rx_test = 0; 1518 break; 1519 case LAGG_OPT_LACP_STRICT: 1520 lsc->lsc_strict_mode = 1; 1521 break; 1522 case -LAGG_OPT_LACP_STRICT: 1523 lsc->lsc_strict_mode = 0; 1524 break; 1525 case LAGG_OPT_LACP_FAST_TIMO: 1526 LACP_LOCK(lsc); 1527 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) 1528 lp->lp_state |= LACP_STATE_TIMEOUT; 1529 LACP_UNLOCK(lsc); 1530 lsc->lsc_fast_timeout = 1; 1531 break; 1532 case -LAGG_OPT_LACP_FAST_TIMO: 1533 LACP_LOCK(lsc); 1534 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) 1535 lp->lp_state &= ~LACP_STATE_TIMEOUT; 1536 LACP_UNLOCK(lsc); 1537 lsc->lsc_fast_timeout = 0; 1538 break; 1539 } 1540 } 1541 LAGG_XUNLOCK(sc); 1542 break; 1543 case SIOCGLAGGFLAGS: 1544 rf->rf_flags = 0; 1545 LAGG_XLOCK(sc); 1546 if (sc->sc_flags & MBUF_HASHFLAG_L2) 1547 rf->rf_flags |= LAGG_F_HASHL2; 1548 if (sc->sc_flags & MBUF_HASHFLAG_L3) 1549 rf->rf_flags |= LAGG_F_HASHL3; 1550 if (sc->sc_flags & MBUF_HASHFLAG_L4) 1551 rf->rf_flags |= LAGG_F_HASHL4; 1552 LAGG_XUNLOCK(sc); 1553 break; 1554 case SIOCSLAGGHASH: 1555 error = priv_check(td, PRIV_NET_LAGG); 1556 if (error) 1557 break; 1558 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) { 1559 error = EINVAL; 1560 break; 1561 } 1562 LAGG_XLOCK(sc); 1563 sc->sc_flags = 0; 1564 if (rf->rf_flags & LAGG_F_HASHL2) 1565 sc->sc_flags |= MBUF_HASHFLAG_L2; 1566 if (rf->rf_flags & LAGG_F_HASHL3) 1567 sc->sc_flags |= MBUF_HASHFLAG_L3; 1568 if (rf->rf_flags & LAGG_F_HASHL4) 1569 sc->sc_flags |= MBUF_HASHFLAG_L4; 1570 LAGG_XUNLOCK(sc); 1571 break; 1572 case SIOCGLAGGPORT: 1573 if (rp->rp_portname[0] == '\0' || 1574 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1575 error = EINVAL; 1576 break; 1577 } 1578 1579 NET_EPOCH_ENTER(et); 1580 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || 1581 lp->lp_softc != sc) { 1582 error = ENOENT; 1583 NET_EPOCH_EXIT(et); 1584 if_rele(tpif); 1585 break; 1586 } 1587 1588 lagg_port2req(lp, rp); 1589 NET_EPOCH_EXIT(et); 1590 if_rele(tpif); 1591 break; 1592 case SIOCSLAGGPORT: 1593 error = priv_check(td, PRIV_NET_LAGG); 1594 if (error) 1595 break; 1596 if (rp->rp_portname[0] == '\0' || 1597 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1598 error = EINVAL; 1599 break; 1600 } 1601 #ifdef INET6 1602 /* 1603 * A laggport interface should not have inet6 address 1604 * because two interfaces with a valid link-local 1605 * scope zone must not be merged in any form. This 1606 * restriction is needed to prevent violation of 1607 * link-local scope zone. Attempts to add a laggport 1608 * interface which has inet6 addresses triggers 1609 * removal of all inet6 addresses on the member 1610 * interface. 1611 */ 1612 if (in6ifa_llaonifp(tpif)) { 1613 in6_ifdetach(tpif); 1614 if_printf(sc->sc_ifp, 1615 "IPv6 addresses on %s have been removed " 1616 "before adding it as a member to prevent " 1617 "IPv6 address scope violation.\n", 1618 tpif->if_xname); 1619 } 1620 #endif 1621 oldmtu = ifp->if_mtu; 1622 LAGG_XLOCK(sc); 1623 error = lagg_port_create(sc, tpif); 1624 LAGG_XUNLOCK(sc); 1625 if_rele(tpif); 1626 1627 /* 1628 * LAGG MTU may change during addition of the first port. 1629 * If it did, do network layer specific procedure. 1630 */ 1631 if (ifp->if_mtu != oldmtu) 1632 if_notifymtu(ifp); 1633 1634 VLAN_CAPABILITIES(ifp); 1635 break; 1636 case SIOCSLAGGDELPORT: 1637 error = priv_check(td, PRIV_NET_LAGG); 1638 if (error) 1639 break; 1640 if (rp->rp_portname[0] == '\0' || 1641 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1642 error = EINVAL; 1643 break; 1644 } 1645 1646 LAGG_XLOCK(sc); 1647 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || 1648 lp->lp_softc != sc) { 1649 error = ENOENT; 1650 LAGG_XUNLOCK(sc); 1651 if_rele(tpif); 1652 break; 1653 } 1654 1655 error = lagg_port_destroy(lp, 1); 1656 LAGG_XUNLOCK(sc); 1657 if_rele(tpif); 1658 VLAN_CAPABILITIES(ifp); 1659 break; 1660 case SIOCSIFFLAGS: 1661 /* Set flags on ports too */ 1662 LAGG_XLOCK(sc); 1663 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1664 lagg_setflags(lp, 1); 1665 } 1666 1667 if (!(ifp->if_flags & IFF_UP) && 1668 (ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1669 /* 1670 * If interface is marked down and it is running, 1671 * then stop and disable it. 1672 */ 1673 lagg_stop(sc); 1674 LAGG_XUNLOCK(sc); 1675 } else if ((ifp->if_flags & IFF_UP) && 1676 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1677 /* 1678 * If interface is marked up and it is stopped, then 1679 * start it. 1680 */ 1681 LAGG_XUNLOCK(sc); 1682 (*ifp->if_init)(sc); 1683 } else 1684 LAGG_XUNLOCK(sc); 1685 break; 1686 case SIOCADDMULTI: 1687 case SIOCDELMULTI: 1688 LAGG_XLOCK(sc); 1689 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1690 lagg_clrmulti(lp); 1691 lagg_setmulti(lp); 1692 } 1693 LAGG_XUNLOCK(sc); 1694 error = 0; 1695 break; 1696 case SIOCSIFMEDIA: 1697 case SIOCGIFMEDIA: 1698 if (ifp->if_type == IFT_INFINIBAND) 1699 error = EINVAL; 1700 else 1701 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1702 break; 1703 1704 case SIOCSIFCAP: 1705 case SIOCSIFCAPNV: 1706 LAGG_XLOCK(sc); 1707 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1708 if (lp->lp_ioctl != NULL) 1709 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1710 } 1711 lagg_capabilities(sc); 1712 LAGG_XUNLOCK(sc); 1713 VLAN_CAPABILITIES(ifp); 1714 error = 0; 1715 break; 1716 1717 case SIOCGIFCAPNV: 1718 error = 0; 1719 break; 1720 1721 case SIOCSIFMTU: 1722 LAGG_XLOCK(sc); 1723 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1724 if (lp->lp_ioctl != NULL) 1725 error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1726 else 1727 error = EINVAL; 1728 if (error != 0) { 1729 if_printf(ifp, 1730 "failed to change MTU to %d on port %s, " 1731 "reverting all ports to original MTU (%d)\n", 1732 ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu); 1733 break; 1734 } 1735 } 1736 if (error == 0) { 1737 ifp->if_mtu = ifr->ifr_mtu; 1738 } else { 1739 /* set every port back to the original MTU */ 1740 ifr->ifr_mtu = ifp->if_mtu; 1741 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1742 if (lp->lp_ioctl != NULL) 1743 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1744 } 1745 } 1746 lagg_capabilities(sc); 1747 LAGG_XUNLOCK(sc); 1748 VLAN_CAPABILITIES(ifp); 1749 break; 1750 1751 default: 1752 error = ether_ioctl(ifp, cmd, data); 1753 break; 1754 } 1755 return (error); 1756 } 1757 1758 #if defined(KERN_TLS) || defined(RATELIMIT) 1759 #ifdef RATELIMIT 1760 static const struct if_snd_tag_sw lagg_snd_tag_ul_sw = { 1761 .snd_tag_modify = lagg_snd_tag_modify, 1762 .snd_tag_query = lagg_snd_tag_query, 1763 .snd_tag_free = lagg_snd_tag_free, 1764 .next_snd_tag = lagg_next_snd_tag, 1765 .type = IF_SND_TAG_TYPE_UNLIMITED 1766 }; 1767 1768 static const struct if_snd_tag_sw lagg_snd_tag_rl_sw = { 1769 .snd_tag_modify = lagg_snd_tag_modify, 1770 .snd_tag_query = lagg_snd_tag_query, 1771 .snd_tag_free = lagg_snd_tag_free, 1772 .next_snd_tag = lagg_next_snd_tag, 1773 .type = IF_SND_TAG_TYPE_RATE_LIMIT 1774 }; 1775 #endif 1776 1777 #ifdef KERN_TLS 1778 static const struct if_snd_tag_sw lagg_snd_tag_tls_sw = { 1779 .snd_tag_modify = lagg_snd_tag_modify, 1780 .snd_tag_query = lagg_snd_tag_query, 1781 .snd_tag_free = lagg_snd_tag_free, 1782 .next_snd_tag = lagg_next_snd_tag, 1783 .type = IF_SND_TAG_TYPE_TLS 1784 }; 1785 1786 #ifdef RATELIMIT 1787 static const struct if_snd_tag_sw lagg_snd_tag_tls_rl_sw = { 1788 .snd_tag_modify = lagg_snd_tag_modify, 1789 .snd_tag_query = lagg_snd_tag_query, 1790 .snd_tag_free = lagg_snd_tag_free, 1791 .next_snd_tag = lagg_next_snd_tag, 1792 .type = IF_SND_TAG_TYPE_TLS_RATE_LIMIT 1793 }; 1794 #endif 1795 #endif 1796 1797 static inline struct lagg_snd_tag * 1798 mst_to_lst(struct m_snd_tag *mst) 1799 { 1800 1801 return (__containerof(mst, struct lagg_snd_tag, com)); 1802 } 1803 1804 /* 1805 * Look up the port used by a specific flow. This only works for lagg 1806 * protocols with deterministic port mappings (e.g. not roundrobin). 1807 * In addition protocols which use a hash to map flows to ports must 1808 * be configured to use the mbuf flowid rather than hashing packet 1809 * contents. 1810 */ 1811 static struct lagg_port * 1812 lookup_snd_tag_port(struct ifnet *ifp, uint32_t flowid, uint32_t flowtype, 1813 uint8_t numa_domain) 1814 { 1815 struct lagg_softc *sc; 1816 struct lagg_port *lp; 1817 struct lagg_lb *lb; 1818 uint32_t hash, p; 1819 int err; 1820 1821 sc = ifp->if_softc; 1822 1823 switch (sc->sc_proto) { 1824 case LAGG_PROTO_FAILOVER: 1825 return (lagg_link_active(sc, sc->sc_primary)); 1826 case LAGG_PROTO_LOADBALANCE: 1827 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1828 flowtype == M_HASHTYPE_NONE) 1829 return (NULL); 1830 p = flowid >> sc->flowid_shift; 1831 p %= sc->sc_count; 1832 lb = (struct lagg_lb *)sc->sc_psc; 1833 lp = lb->lb_ports[p]; 1834 return (lagg_link_active(sc, lp)); 1835 case LAGG_PROTO_LACP: 1836 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1837 flowtype == M_HASHTYPE_NONE) 1838 return (NULL); 1839 hash = flowid >> sc->flowid_shift; 1840 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, &err)); 1841 default: 1842 return (NULL); 1843 } 1844 } 1845 1846 static int 1847 lagg_snd_tag_alloc(struct ifnet *ifp, 1848 union if_snd_tag_alloc_params *params, 1849 struct m_snd_tag **ppmt) 1850 { 1851 struct epoch_tracker et; 1852 const struct if_snd_tag_sw *sw; 1853 struct lagg_snd_tag *lst; 1854 struct lagg_port *lp; 1855 struct ifnet *lp_ifp; 1856 struct m_snd_tag *mst; 1857 int error; 1858 1859 switch (params->hdr.type) { 1860 #ifdef RATELIMIT 1861 case IF_SND_TAG_TYPE_UNLIMITED: 1862 sw = &lagg_snd_tag_ul_sw; 1863 break; 1864 case IF_SND_TAG_TYPE_RATE_LIMIT: 1865 sw = &lagg_snd_tag_rl_sw; 1866 break; 1867 #endif 1868 #ifdef KERN_TLS 1869 case IF_SND_TAG_TYPE_TLS: 1870 sw = &lagg_snd_tag_tls_sw; 1871 break; 1872 case IF_SND_TAG_TYPE_TLS_RX: 1873 /* Return tag from port interface directly. */ 1874 sw = NULL; 1875 break; 1876 #ifdef RATELIMIT 1877 case IF_SND_TAG_TYPE_TLS_RATE_LIMIT: 1878 sw = &lagg_snd_tag_tls_rl_sw; 1879 break; 1880 #endif 1881 #endif 1882 default: 1883 return (EOPNOTSUPP); 1884 } 1885 1886 NET_EPOCH_ENTER(et); 1887 lp = lookup_snd_tag_port(ifp, params->hdr.flowid, 1888 params->hdr.flowtype, params->hdr.numa_domain); 1889 if (lp == NULL) { 1890 NET_EPOCH_EXIT(et); 1891 return (EOPNOTSUPP); 1892 } 1893 if (lp->lp_ifp == NULL) { 1894 NET_EPOCH_EXIT(et); 1895 return (EOPNOTSUPP); 1896 } 1897 lp_ifp = lp->lp_ifp; 1898 if_ref(lp_ifp); 1899 NET_EPOCH_EXIT(et); 1900 1901 if (sw != NULL) { 1902 lst = malloc(sizeof(*lst), M_LAGG, M_NOWAIT); 1903 if (lst == NULL) { 1904 if_rele(lp_ifp); 1905 return (ENOMEM); 1906 } 1907 } else 1908 lst = NULL; 1909 1910 error = m_snd_tag_alloc(lp_ifp, params, &mst); 1911 if_rele(lp_ifp); 1912 if (error) { 1913 free(lst, M_LAGG); 1914 return (error); 1915 } 1916 1917 if (sw != NULL) { 1918 m_snd_tag_init(&lst->com, ifp, sw); 1919 lst->tag = mst; 1920 1921 *ppmt = &lst->com; 1922 } else 1923 *ppmt = mst; 1924 1925 return (0); 1926 } 1927 1928 static struct m_snd_tag * 1929 lagg_next_snd_tag(struct m_snd_tag *mst) 1930 { 1931 struct lagg_snd_tag *lst; 1932 1933 lst = mst_to_lst(mst); 1934 return (lst->tag); 1935 } 1936 1937 static int 1938 lagg_snd_tag_modify(struct m_snd_tag *mst, 1939 union if_snd_tag_modify_params *params) 1940 { 1941 struct lagg_snd_tag *lst; 1942 1943 lst = mst_to_lst(mst); 1944 return (lst->tag->sw->snd_tag_modify(lst->tag, params)); 1945 } 1946 1947 static int 1948 lagg_snd_tag_query(struct m_snd_tag *mst, 1949 union if_snd_tag_query_params *params) 1950 { 1951 struct lagg_snd_tag *lst; 1952 1953 lst = mst_to_lst(mst); 1954 return (lst->tag->sw->snd_tag_query(lst->tag, params)); 1955 } 1956 1957 static void 1958 lagg_snd_tag_free(struct m_snd_tag *mst) 1959 { 1960 struct lagg_snd_tag *lst; 1961 1962 lst = mst_to_lst(mst); 1963 m_snd_tag_rele(lst->tag); 1964 free(lst, M_LAGG); 1965 } 1966 1967 static void 1968 lagg_ratelimit_query(struct ifnet *ifp __unused, struct if_ratelimit_query_results *q) 1969 { 1970 /* 1971 * For lagg, we have an indirect 1972 * interface. The caller needs to 1973 * get a ratelimit tag on the actual 1974 * interface the flow will go on. 1975 */ 1976 q->rate_table = NULL; 1977 q->flags = RT_IS_INDIRECT; 1978 q->max_flows = 0; 1979 q->number_of_rates = 0; 1980 } 1981 #endif 1982 1983 static int 1984 lagg_setmulti(struct lagg_port *lp) 1985 { 1986 struct lagg_softc *sc = lp->lp_softc; 1987 struct ifnet *ifp = lp->lp_ifp; 1988 struct ifnet *scifp = sc->sc_ifp; 1989 struct lagg_mc *mc; 1990 struct ifmultiaddr *ifma; 1991 int error; 1992 1993 IF_ADDR_WLOCK(scifp); 1994 CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) { 1995 if (ifma->ifma_addr->sa_family != AF_LINK) 1996 continue; 1997 mc = malloc(sizeof(struct lagg_mc), M_LAGG, M_NOWAIT); 1998 if (mc == NULL) { 1999 IF_ADDR_WUNLOCK(scifp); 2000 return (ENOMEM); 2001 } 2002 bcopy(ifma->ifma_addr, &mc->mc_addr, 2003 ifma->ifma_addr->sa_len); 2004 mc->mc_addr.sdl_index = ifp->if_index; 2005 mc->mc_ifma = NULL; 2006 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries); 2007 } 2008 IF_ADDR_WUNLOCK(scifp); 2009 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) { 2010 error = if_addmulti(ifp, 2011 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma); 2012 if (error) 2013 return (error); 2014 } 2015 return (0); 2016 } 2017 2018 static int 2019 lagg_clrmulti(struct lagg_port *lp) 2020 { 2021 struct lagg_mc *mc; 2022 2023 LAGG_XLOCK_ASSERT(lp->lp_softc); 2024 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) { 2025 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries); 2026 if (mc->mc_ifma && lp->lp_detaching == 0) 2027 if_delmulti_ifma(mc->mc_ifma); 2028 free(mc, M_LAGG); 2029 } 2030 return (0); 2031 } 2032 2033 static void 2034 lagg_setcaps(struct lagg_port *lp, int cap, int cap2) 2035 { 2036 struct ifreq ifr; 2037 struct siocsifcapnv_driver_data drv_ioctl_data; 2038 2039 if (lp->lp_ifp->if_capenable == cap && 2040 lp->lp_ifp->if_capenable2 == cap2) 2041 return; 2042 if (lp->lp_ioctl == NULL) 2043 return; 2044 /* XXX */ 2045 if ((lp->lp_ifp->if_capabilities & IFCAP_NV) != 0) { 2046 drv_ioctl_data.reqcap = cap; 2047 drv_ioctl_data.reqcap2 = cap2; 2048 drv_ioctl_data.nvcap = NULL; 2049 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAPNV, 2050 (caddr_t)&drv_ioctl_data); 2051 } else { 2052 ifr.ifr_reqcap = cap; 2053 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr); 2054 } 2055 } 2056 2057 /* Handle a ref counted flag that should be set on the lagg port as well */ 2058 static int 2059 lagg_setflag(struct lagg_port *lp, int flag, int status, 2060 int (*func)(struct ifnet *, int)) 2061 { 2062 struct lagg_softc *sc = lp->lp_softc; 2063 struct ifnet *scifp = sc->sc_ifp; 2064 struct ifnet *ifp = lp->lp_ifp; 2065 int error; 2066 2067 LAGG_XLOCK_ASSERT(sc); 2068 2069 status = status ? (scifp->if_flags & flag) : 0; 2070 /* Now "status" contains the flag value or 0 */ 2071 2072 /* 2073 * See if recorded ports status is different from what 2074 * we want it to be. If it is, flip it. We record ports 2075 * status in lp_ifflags so that we won't clear ports flag 2076 * we haven't set. In fact, we don't clear or set ports 2077 * flags directly, but get or release references to them. 2078 * That's why we can be sure that recorded flags still are 2079 * in accord with actual ports flags. 2080 */ 2081 if (status != (lp->lp_ifflags & flag)) { 2082 error = (*func)(ifp, status); 2083 if (error) 2084 return (error); 2085 lp->lp_ifflags &= ~flag; 2086 lp->lp_ifflags |= status; 2087 } 2088 return (0); 2089 } 2090 2091 /* 2092 * Handle IFF_* flags that require certain changes on the lagg port 2093 * if "status" is true, update ports flags respective to the lagg 2094 * if "status" is false, forcedly clear the flags set on port. 2095 */ 2096 static int 2097 lagg_setflags(struct lagg_port *lp, int status) 2098 { 2099 int error, i; 2100 2101 for (i = 0; lagg_pflags[i].flag; i++) { 2102 error = lagg_setflag(lp, lagg_pflags[i].flag, 2103 status, lagg_pflags[i].func); 2104 if (error) 2105 return (error); 2106 } 2107 return (0); 2108 } 2109 2110 static int 2111 lagg_transmit_ethernet(struct ifnet *ifp, struct mbuf *m) 2112 { 2113 struct epoch_tracker et; 2114 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2115 int error; 2116 2117 #if defined(KERN_TLS) || defined(RATELIMIT) 2118 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) 2119 MPASS(m->m_pkthdr.snd_tag->ifp == ifp); 2120 #endif 2121 NET_EPOCH_ENTER(et); 2122 /* We need a Tx algorithm and at least one port */ 2123 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2124 NET_EPOCH_EXIT(et); 2125 m_freem(m); 2126 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2127 return (ENXIO); 2128 } 2129 2130 ETHER_BPF_MTAP(ifp, m); 2131 2132 error = lagg_proto_start(sc, m); 2133 NET_EPOCH_EXIT(et); 2134 return (error); 2135 } 2136 2137 static int 2138 lagg_transmit_infiniband(struct ifnet *ifp, struct mbuf *m) 2139 { 2140 struct epoch_tracker et; 2141 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2142 int error; 2143 2144 #if defined(KERN_TLS) || defined(RATELIMIT) 2145 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) 2146 MPASS(m->m_pkthdr.snd_tag->ifp == ifp); 2147 #endif 2148 NET_EPOCH_ENTER(et); 2149 /* We need a Tx algorithm and at least one port */ 2150 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2151 NET_EPOCH_EXIT(et); 2152 m_freem(m); 2153 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2154 return (ENXIO); 2155 } 2156 2157 INFINIBAND_BPF_MTAP(ifp, m); 2158 2159 error = lagg_proto_start(sc, m); 2160 NET_EPOCH_EXIT(et); 2161 return (error); 2162 } 2163 2164 /* 2165 * The ifp->if_qflush entry point for lagg(4) is no-op. 2166 */ 2167 static void 2168 lagg_qflush(struct ifnet *ifp __unused) 2169 { 2170 } 2171 2172 static struct mbuf * 2173 lagg_input_ethernet(struct ifnet *ifp, struct mbuf *m) 2174 { 2175 struct epoch_tracker et; 2176 struct lagg_port *lp = ifp->if_lagg; 2177 struct lagg_softc *sc = lp->lp_softc; 2178 struct ifnet *scifp = sc->sc_ifp; 2179 2180 NET_EPOCH_ENTER(et); 2181 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2182 lp->lp_detaching != 0 || 2183 sc->sc_proto == LAGG_PROTO_NONE) { 2184 NET_EPOCH_EXIT(et); 2185 m_freem(m); 2186 return (NULL); 2187 } 2188 2189 ETHER_BPF_MTAP(scifp, m); 2190 2191 m = lagg_proto_input(sc, lp, m); 2192 if (m != NULL && (scifp->if_flags & IFF_MONITOR) != 0) { 2193 m_freem(m); 2194 m = NULL; 2195 } 2196 2197 #ifdef DEV_NETMAP 2198 if (m != NULL && scifp->if_capenable & IFCAP_NETMAP) { 2199 scifp->if_input(scifp, m); 2200 m = NULL; 2201 } 2202 #endif /* DEV_NETMAP */ 2203 2204 NET_EPOCH_EXIT(et); 2205 return (m); 2206 } 2207 2208 static struct mbuf * 2209 lagg_input_infiniband(struct ifnet *ifp, struct mbuf *m) 2210 { 2211 struct epoch_tracker et; 2212 struct lagg_port *lp = ifp->if_lagg; 2213 struct lagg_softc *sc = lp->lp_softc; 2214 struct ifnet *scifp = sc->sc_ifp; 2215 2216 NET_EPOCH_ENTER(et); 2217 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2218 lp->lp_detaching != 0 || 2219 sc->sc_proto == LAGG_PROTO_NONE) { 2220 NET_EPOCH_EXIT(et); 2221 m_freem(m); 2222 return (NULL); 2223 } 2224 2225 INFINIBAND_BPF_MTAP(scifp, m); 2226 2227 m = lagg_proto_input(sc, lp, m); 2228 if (m != NULL && (scifp->if_flags & IFF_MONITOR) != 0) { 2229 m_freem(m); 2230 m = NULL; 2231 } 2232 2233 NET_EPOCH_EXIT(et); 2234 return (m); 2235 } 2236 2237 static int 2238 lagg_media_change(struct ifnet *ifp) 2239 { 2240 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2241 2242 if (sc->sc_ifflags & IFF_DEBUG) 2243 printf("%s\n", __func__); 2244 2245 /* Ignore */ 2246 return (0); 2247 } 2248 2249 static void 2250 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr) 2251 { 2252 struct epoch_tracker et; 2253 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2254 struct lagg_port *lp; 2255 2256 imr->ifm_status = IFM_AVALID; 2257 imr->ifm_active = IFM_ETHER | IFM_AUTO; 2258 2259 NET_EPOCH_ENTER(et); 2260 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2261 if (LAGG_PORTACTIVE(lp)) 2262 imr->ifm_status |= IFM_ACTIVE; 2263 } 2264 NET_EPOCH_EXIT(et); 2265 } 2266 2267 static void 2268 lagg_linkstate(struct lagg_softc *sc) 2269 { 2270 struct epoch_tracker et; 2271 struct lagg_port *lp; 2272 int new_link = LINK_STATE_DOWN; 2273 uint64_t speed; 2274 2275 LAGG_XLOCK_ASSERT(sc); 2276 2277 /* LACP handles link state itself */ 2278 if (sc->sc_proto == LAGG_PROTO_LACP) 2279 return; 2280 2281 /* Our link is considered up if at least one of our ports is active */ 2282 NET_EPOCH_ENTER(et); 2283 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2284 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) { 2285 new_link = LINK_STATE_UP; 2286 break; 2287 } 2288 } 2289 NET_EPOCH_EXIT(et); 2290 if_link_state_change(sc->sc_ifp, new_link); 2291 2292 /* Update if_baudrate to reflect the max possible speed */ 2293 switch (sc->sc_proto) { 2294 case LAGG_PROTO_FAILOVER: 2295 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ? 2296 sc->sc_primary->lp_ifp->if_baudrate : 0; 2297 break; 2298 case LAGG_PROTO_ROUNDROBIN: 2299 case LAGG_PROTO_LOADBALANCE: 2300 case LAGG_PROTO_BROADCAST: 2301 speed = 0; 2302 NET_EPOCH_ENTER(et); 2303 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2304 speed += lp->lp_ifp->if_baudrate; 2305 NET_EPOCH_EXIT(et); 2306 sc->sc_ifp->if_baudrate = speed; 2307 break; 2308 case LAGG_PROTO_LACP: 2309 /* LACP updates if_baudrate itself */ 2310 break; 2311 } 2312 } 2313 2314 static void 2315 lagg_port_state(struct ifnet *ifp, int state) 2316 { 2317 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg; 2318 struct lagg_softc *sc = NULL; 2319 2320 if (lp != NULL) 2321 sc = lp->lp_softc; 2322 if (sc == NULL) 2323 return; 2324 2325 LAGG_XLOCK(sc); 2326 lagg_linkstate(sc); 2327 lagg_proto_linkstate(sc, lp); 2328 LAGG_XUNLOCK(sc); 2329 } 2330 2331 struct lagg_port * 2332 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp) 2333 { 2334 struct lagg_port *lp_next, *rval = NULL; 2335 2336 /* 2337 * Search a port which reports an active link state. 2338 */ 2339 2340 #ifdef INVARIANTS 2341 /* 2342 * This is called with either in the network epoch 2343 * or with LAGG_XLOCK(sc) held. 2344 */ 2345 if (!in_epoch(net_epoch_preempt)) 2346 LAGG_XLOCK_ASSERT(sc); 2347 #endif 2348 2349 if (lp == NULL) 2350 goto search; 2351 if (LAGG_PORTACTIVE(lp)) { 2352 rval = lp; 2353 goto found; 2354 } 2355 if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL && 2356 LAGG_PORTACTIVE(lp_next)) { 2357 rval = lp_next; 2358 goto found; 2359 } 2360 2361 search: 2362 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2363 if (LAGG_PORTACTIVE(lp_next)) { 2364 return (lp_next); 2365 } 2366 } 2367 found: 2368 return (rval); 2369 } 2370 2371 int 2372 lagg_enqueue(struct ifnet *ifp, struct mbuf *m) 2373 { 2374 2375 #if defined(KERN_TLS) || defined(RATELIMIT) 2376 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) { 2377 struct lagg_snd_tag *lst; 2378 struct m_snd_tag *mst; 2379 2380 mst = m->m_pkthdr.snd_tag; 2381 lst = mst_to_lst(mst); 2382 if (lst->tag->ifp != ifp) { 2383 m_freem(m); 2384 return (EAGAIN); 2385 } 2386 m->m_pkthdr.snd_tag = m_snd_tag_ref(lst->tag); 2387 m_snd_tag_rele(mst); 2388 } 2389 #endif 2390 return (ifp->if_transmit)(ifp, m); 2391 } 2392 2393 /* 2394 * Simple round robin aggregation 2395 */ 2396 static void 2397 lagg_rr_attach(struct lagg_softc *sc) 2398 { 2399 sc->sc_seq = 0; 2400 sc->sc_stride = 1; 2401 } 2402 2403 static int 2404 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m) 2405 { 2406 struct lagg_port *lp; 2407 uint32_t p; 2408 2409 p = atomic_fetchadd_32(&sc->sc_seq, 1); 2410 p /= sc->sc_stride; 2411 p %= sc->sc_count; 2412 lp = CK_SLIST_FIRST(&sc->sc_ports); 2413 2414 while (p--) 2415 lp = CK_SLIST_NEXT(lp, lp_entries); 2416 2417 /* 2418 * Check the port's link state. This will return the next active 2419 * port if the link is down or the port is NULL. 2420 */ 2421 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2422 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2423 m_freem(m); 2424 return (ENETDOWN); 2425 } 2426 2427 /* Send mbuf */ 2428 return (lagg_enqueue(lp->lp_ifp, m)); 2429 } 2430 2431 static struct mbuf * 2432 lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2433 { 2434 struct ifnet *ifp = sc->sc_ifp; 2435 2436 /* Just pass in the packet to our lagg device */ 2437 m->m_pkthdr.rcvif = ifp; 2438 2439 return (m); 2440 } 2441 2442 /* 2443 * Broadcast mode 2444 */ 2445 static int 2446 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m) 2447 { 2448 int errors = 0; 2449 int ret; 2450 struct lagg_port *lp, *last = NULL; 2451 struct mbuf *m0; 2452 2453 NET_EPOCH_ASSERT(); 2454 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2455 if (!LAGG_PORTACTIVE(lp)) 2456 continue; 2457 2458 if (last != NULL) { 2459 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT); 2460 if (m0 == NULL) { 2461 ret = ENOBUFS; 2462 errors++; 2463 break; 2464 } 2465 lagg_enqueue(last->lp_ifp, m0); 2466 } 2467 last = lp; 2468 } 2469 2470 if (last == NULL) { 2471 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2472 m_freem(m); 2473 return (ENOENT); 2474 } 2475 if ((last = lagg_link_active(sc, last)) == NULL) { 2476 errors++; 2477 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2478 m_freem(m); 2479 return (ENETDOWN); 2480 } 2481 2482 ret = lagg_enqueue(last->lp_ifp, m); 2483 if (errors != 0) 2484 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2485 2486 return (ret); 2487 } 2488 2489 static struct mbuf* 2490 lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2491 { 2492 struct ifnet *ifp = sc->sc_ifp; 2493 2494 /* Just pass in the packet to our lagg device */ 2495 m->m_pkthdr.rcvif = ifp; 2496 return (m); 2497 } 2498 2499 /* 2500 * Active failover 2501 */ 2502 static int 2503 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m) 2504 { 2505 struct lagg_port *lp; 2506 2507 /* Use the master port if active or the next available port */ 2508 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) { 2509 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2510 m_freem(m); 2511 return (ENETDOWN); 2512 } 2513 2514 /* Send mbuf */ 2515 return (lagg_enqueue(lp->lp_ifp, m)); 2516 } 2517 2518 static struct mbuf * 2519 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2520 { 2521 struct ifnet *ifp = sc->sc_ifp; 2522 struct lagg_port *tmp_tp; 2523 2524 if (lp == sc->sc_primary || V_lagg_failover_rx_all) { 2525 m->m_pkthdr.rcvif = ifp; 2526 return (m); 2527 } 2528 2529 if (!LAGG_PORTACTIVE(sc->sc_primary)) { 2530 tmp_tp = lagg_link_active(sc, sc->sc_primary); 2531 /* 2532 * If tmp_tp is null, we've received a packet when all 2533 * our links are down. Weird, but process it anyways. 2534 */ 2535 if ((tmp_tp == NULL || tmp_tp == lp)) { 2536 m->m_pkthdr.rcvif = ifp; 2537 return (m); 2538 } 2539 } 2540 2541 m_freem(m); 2542 return (NULL); 2543 } 2544 2545 /* 2546 * Loadbalancing 2547 */ 2548 static void 2549 lagg_lb_attach(struct lagg_softc *sc) 2550 { 2551 struct lagg_port *lp; 2552 struct lagg_lb *lb; 2553 2554 LAGG_XLOCK_ASSERT(sc); 2555 lb = malloc(sizeof(struct lagg_lb), M_LAGG, M_WAITOK | M_ZERO); 2556 lb->lb_key = m_ether_tcpip_hash_init(); 2557 sc->sc_psc = lb; 2558 2559 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2560 lagg_lb_port_create(lp); 2561 } 2562 2563 static void 2564 lagg_lb_detach(struct lagg_softc *sc) 2565 { 2566 struct lagg_lb *lb; 2567 2568 lb = (struct lagg_lb *)sc->sc_psc; 2569 if (lb != NULL) 2570 free(lb, M_LAGG); 2571 } 2572 2573 static int 2574 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp) 2575 { 2576 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2577 struct lagg_port *lp_next; 2578 int i = 0, rv; 2579 2580 rv = 0; 2581 bzero(&lb->lb_ports, sizeof(lb->lb_ports)); 2582 LAGG_XLOCK_ASSERT(sc); 2583 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2584 if (lp_next == lp) 2585 continue; 2586 if (i >= LAGG_MAX_PORTS) { 2587 rv = EINVAL; 2588 break; 2589 } 2590 if (sc->sc_ifflags & IFF_DEBUG) 2591 printf("%s: port %s at index %d\n", 2592 sc->sc_ifname, lp_next->lp_ifp->if_xname, i); 2593 lb->lb_ports[i++] = lp_next; 2594 } 2595 2596 return (rv); 2597 } 2598 2599 static int 2600 lagg_lb_port_create(struct lagg_port *lp) 2601 { 2602 struct lagg_softc *sc = lp->lp_softc; 2603 return (lagg_lb_porttable(sc, NULL)); 2604 } 2605 2606 static void 2607 lagg_lb_port_destroy(struct lagg_port *lp) 2608 { 2609 struct lagg_softc *sc = lp->lp_softc; 2610 lagg_lb_porttable(sc, lp); 2611 } 2612 2613 static int 2614 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m) 2615 { 2616 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2617 struct lagg_port *lp = NULL; 2618 uint32_t p = 0; 2619 2620 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 2621 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 2622 p = m->m_pkthdr.flowid >> sc->flowid_shift; 2623 else 2624 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key); 2625 p %= sc->sc_count; 2626 lp = lb->lb_ports[p]; 2627 2628 /* 2629 * Check the port's link state. This will return the next active 2630 * port if the link is down or the port is NULL. 2631 */ 2632 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2633 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2634 m_freem(m); 2635 return (ENETDOWN); 2636 } 2637 2638 /* Send mbuf */ 2639 return (lagg_enqueue(lp->lp_ifp, m)); 2640 } 2641 2642 static struct mbuf * 2643 lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2644 { 2645 struct ifnet *ifp = sc->sc_ifp; 2646 2647 /* Just pass in the packet to our lagg device */ 2648 m->m_pkthdr.rcvif = ifp; 2649 2650 return (m); 2651 } 2652 2653 /* 2654 * 802.3ad LACP 2655 */ 2656 static void 2657 lagg_lacp_attach(struct lagg_softc *sc) 2658 { 2659 struct lagg_port *lp; 2660 2661 lacp_attach(sc); 2662 LAGG_XLOCK_ASSERT(sc); 2663 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2664 lacp_port_create(lp); 2665 } 2666 2667 static void 2668 lagg_lacp_detach(struct lagg_softc *sc) 2669 { 2670 struct lagg_port *lp; 2671 void *psc; 2672 2673 LAGG_XLOCK_ASSERT(sc); 2674 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2675 lacp_port_destroy(lp); 2676 2677 psc = sc->sc_psc; 2678 sc->sc_psc = NULL; 2679 lacp_detach(psc); 2680 } 2681 2682 static void 2683 lagg_lacp_lladdr(struct lagg_softc *sc) 2684 { 2685 struct lagg_port *lp; 2686 2687 LAGG_SXLOCK_ASSERT(sc); 2688 2689 /* purge all the lacp ports */ 2690 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2691 lacp_port_destroy(lp); 2692 2693 /* add them back in */ 2694 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2695 lacp_port_create(lp); 2696 } 2697 2698 static int 2699 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m) 2700 { 2701 struct lagg_port *lp; 2702 int err; 2703 2704 lp = lacp_select_tx_port(sc, m, &err); 2705 if (lp == NULL) { 2706 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2707 m_freem(m); 2708 return (err); 2709 } 2710 2711 /* Send mbuf */ 2712 return (lagg_enqueue(lp->lp_ifp, m)); 2713 } 2714 2715 static struct mbuf * 2716 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2717 { 2718 struct ifnet *ifp = sc->sc_ifp; 2719 struct ether_header *eh; 2720 u_short etype; 2721 2722 eh = mtod(m, struct ether_header *); 2723 etype = ntohs(eh->ether_type); 2724 2725 /* Tap off LACP control messages */ 2726 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) { 2727 m = lacp_input(lp, m); 2728 if (m == NULL) 2729 return (NULL); 2730 } 2731 2732 /* 2733 * If the port is not collecting or not in the active aggregator then 2734 * free and return. 2735 */ 2736 if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) { 2737 m_freem(m); 2738 return (NULL); 2739 } 2740 2741 m->m_pkthdr.rcvif = ifp; 2742 return (m); 2743 } 2744