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 #include "opt_inet.h" 23 #include "opt_inet6.h" 24 #include "opt_kern_tls.h" 25 #include "opt_ratelimit.h" 26 27 #include <sys/param.h> 28 #include <sys/kernel.h> 29 #include <sys/malloc.h> 30 #include <sys/mbuf.h> 31 #include <sys/queue.h> 32 #include <sys/socket.h> 33 #include <sys/sockio.h> 34 #include <sys/sysctl.h> 35 #include <sys/module.h> 36 #include <sys/priv.h> 37 #include <sys/systm.h> 38 #include <sys/proc.h> 39 #include <sys/lock.h> 40 #include <sys/rmlock.h> 41 #include <sys/sx.h> 42 #include <sys/taskqueue.h> 43 #include <sys/eventhandler.h> 44 45 #include <net/ethernet.h> 46 #include <net/if.h> 47 #include <net/if_clone.h> 48 #include <net/if_arp.h> 49 #include <net/if_dl.h> 50 #include <net/if_media.h> 51 #include <net/if_types.h> 52 #include <net/if_var.h> 53 #include <net/if_private.h> 54 #include <net/bpf.h> 55 #include <net/route.h> 56 #include <net/vnet.h> 57 #include <net/infiniband.h> 58 59 #if defined(INET) || defined(INET6) 60 #include <netinet/in.h> 61 #include <netinet/ip.h> 62 #endif 63 #ifdef INET 64 #include <netinet/in_systm.h> 65 #include <netinet/if_ether.h> 66 #endif 67 68 #ifdef INET6 69 #include <netinet/ip6.h> 70 #include <netinet6/in6_var.h> 71 #include <netinet6/in6_ifattach.h> 72 #endif 73 74 #include <net/if_vlan_var.h> 75 #include <net/if_lagg.h> 76 #include <net/ieee8023ad_lacp.h> 77 78 #ifdef DEV_NETMAP 79 MODULE_DEPEND(if_lagg, netmap, 1, 1, 1); 80 #endif 81 82 #define LAGG_SX_INIT(_sc) sx_init(&(_sc)->sc_sx, "if_lagg sx") 83 #define LAGG_SX_DESTROY(_sc) sx_destroy(&(_sc)->sc_sx) 84 #define LAGG_XLOCK(_sc) sx_xlock(&(_sc)->sc_sx) 85 #define LAGG_XUNLOCK(_sc) sx_xunlock(&(_sc)->sc_sx) 86 #define LAGG_XLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_XLOCKED) 87 #define LAGG_SLOCK(_sc) sx_slock(&(_sc)->sc_sx) 88 #define LAGG_SUNLOCK(_sc) sx_sunlock(&(_sc)->sc_sx) 89 #define LAGG_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED) 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_STATIC(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 static 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 *); 174 175 /* Active failover */ 176 static int lagg_fail_start(struct lagg_softc *, struct mbuf *); 177 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *, 178 struct mbuf *); 179 180 /* Loadbalancing */ 181 static void lagg_lb_attach(struct lagg_softc *); 182 static void lagg_lb_detach(struct lagg_softc *); 183 static int lagg_lb_port_create(struct lagg_port *); 184 static void lagg_lb_port_destroy(struct lagg_port *); 185 static int lagg_lb_start(struct lagg_softc *, struct mbuf *); 186 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *); 187 188 /* Broadcast */ 189 static int lagg_bcast_start(struct lagg_softc *, struct mbuf *); 190 191 /* 802.3ad LACP */ 192 static void lagg_lacp_attach(struct lagg_softc *); 193 static void lagg_lacp_detach(struct lagg_softc *); 194 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *); 195 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *, 196 struct mbuf *); 197 static void lagg_lacp_lladdr(struct lagg_softc *); 198 199 /* Default input */ 200 static struct mbuf *lagg_default_input(struct lagg_softc *, struct lagg_port *, 201 struct mbuf *); 202 203 /* lagg protocol table */ 204 static const struct lagg_proto { 205 lagg_proto pr_num; 206 void (*pr_attach)(struct lagg_softc *); 207 void (*pr_detach)(struct lagg_softc *); 208 int (*pr_start)(struct lagg_softc *, struct mbuf *); 209 struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *, 210 struct mbuf *); 211 int (*pr_addport)(struct lagg_port *); 212 void (*pr_delport)(struct lagg_port *); 213 void (*pr_linkstate)(struct lagg_port *); 214 void (*pr_init)(struct lagg_softc *); 215 void (*pr_stop)(struct lagg_softc *); 216 void (*pr_lladdr)(struct lagg_softc *); 217 void (*pr_request)(struct lagg_softc *, void *); 218 void (*pr_portreq)(struct lagg_port *, void *); 219 } lagg_protos[] = { 220 { 221 .pr_num = LAGG_PROTO_NONE 222 }, 223 { 224 .pr_num = LAGG_PROTO_ROUNDROBIN, 225 .pr_attach = lagg_rr_attach, 226 .pr_start = lagg_rr_start, 227 .pr_input = lagg_default_input, 228 }, 229 { 230 .pr_num = LAGG_PROTO_FAILOVER, 231 .pr_start = lagg_fail_start, 232 .pr_input = lagg_fail_input, 233 }, 234 { 235 .pr_num = LAGG_PROTO_LOADBALANCE, 236 .pr_attach = lagg_lb_attach, 237 .pr_detach = lagg_lb_detach, 238 .pr_start = lagg_lb_start, 239 .pr_input = lagg_default_input, 240 .pr_addport = lagg_lb_port_create, 241 .pr_delport = lagg_lb_port_destroy, 242 }, 243 { 244 .pr_num = LAGG_PROTO_LACP, 245 .pr_attach = lagg_lacp_attach, 246 .pr_detach = lagg_lacp_detach, 247 .pr_start = lagg_lacp_start, 248 .pr_input = lagg_lacp_input, 249 .pr_addport = lacp_port_create, 250 .pr_delport = lacp_port_destroy, 251 .pr_linkstate = lacp_linkstate, 252 .pr_init = lacp_init, 253 .pr_stop = lacp_stop, 254 .pr_lladdr = lagg_lacp_lladdr, 255 .pr_request = lacp_req, 256 .pr_portreq = lacp_portreq, 257 }, 258 { 259 .pr_num = LAGG_PROTO_BROADCAST, 260 .pr_start = lagg_bcast_start, 261 .pr_input = lagg_default_input, 262 }, 263 }; 264 265 SYSCTL_DECL(_net_link); 266 SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 267 "Link Aggregation"); 268 269 /* Allow input on any failover links */ 270 VNET_DEFINE_STATIC(int, lagg_failover_rx_all); 271 #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all) 272 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET, 273 &VNET_NAME(lagg_failover_rx_all), 0, 274 "Accept input from any interface in a failover lagg"); 275 276 /* Default value for using flowid */ 277 VNET_DEFINE_STATIC(int, def_use_flowid) = 0; 278 #define V_def_use_flowid VNET(def_use_flowid) 279 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, 280 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_use_flowid), 0, 281 "Default setting for using flow id for load sharing"); 282 283 /* Default value for using numa */ 284 VNET_DEFINE_STATIC(int, def_use_numa) = 1; 285 #define V_def_use_numa VNET(def_use_numa) 286 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_numa, 287 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_use_numa), 0, 288 "Use numa to steer flows"); 289 290 /* Default value for flowid shift */ 291 VNET_DEFINE_STATIC(int, def_flowid_shift) = 16; 292 #define V_def_flowid_shift VNET(def_flowid_shift) 293 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, 294 CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_flowid_shift), 0, 295 "Default setting for flowid shift for load sharing"); 296 297 static void 298 vnet_lagg_init(const void *unused __unused) 299 { 300 301 LAGG_LIST_LOCK_INIT(); 302 SLIST_INIT(&V_lagg_list); 303 struct if_clone_addreq req = { 304 .create_f = lagg_clone_create, 305 .destroy_f = lagg_clone_destroy, 306 .flags = IFC_F_AUTOUNIT, 307 }; 308 V_lagg_cloner = ifc_attach_cloner(laggname, &req); 309 } 310 VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY, 311 vnet_lagg_init, NULL); 312 313 static void 314 vnet_lagg_uninit(const void *unused __unused) 315 { 316 317 ifc_detach_cloner(V_lagg_cloner); 318 LAGG_LIST_LOCK_DESTROY(); 319 } 320 VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY, 321 vnet_lagg_uninit, NULL); 322 323 static int 324 lagg_modevent(module_t mod, int type, void *data) 325 { 326 327 switch (type) { 328 case MOD_LOAD: 329 lagg_input_ethernet_p = lagg_input_ethernet; 330 lagg_input_infiniband_p = lagg_input_infiniband; 331 lagg_linkstate_p = lagg_port_state; 332 lagg_detach_cookie = EVENTHANDLER_REGISTER( 333 ifnet_departure_event, lagg_port_ifdetach, NULL, 334 EVENTHANDLER_PRI_ANY); 335 break; 336 case MOD_UNLOAD: 337 EVENTHANDLER_DEREGISTER(ifnet_departure_event, 338 lagg_detach_cookie); 339 lagg_input_ethernet_p = NULL; 340 lagg_input_infiniband_p = NULL; 341 lagg_linkstate_p = NULL; 342 break; 343 default: 344 return (EOPNOTSUPP); 345 } 346 return (0); 347 } 348 349 static moduledata_t lagg_mod = { 350 "if_lagg", 351 lagg_modevent, 352 0 353 }; 354 355 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 356 MODULE_VERSION(if_lagg, 1); 357 MODULE_DEPEND(if_lagg, if_infiniband, 1, 1, 1); 358 359 static void 360 lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr) 361 { 362 363 LAGG_XLOCK_ASSERT(sc); 364 KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto", 365 __func__, sc)); 366 367 if (sc->sc_ifflags & IFF_DEBUG) 368 if_printf(sc->sc_ifp, "using proto %u\n", pr); 369 370 if (lagg_protos[pr].pr_attach != NULL) 371 lagg_protos[pr].pr_attach(sc); 372 sc->sc_proto = pr; 373 } 374 375 static void 376 lagg_proto_detach(struct lagg_softc *sc) 377 { 378 lagg_proto pr; 379 380 LAGG_XLOCK_ASSERT(sc); 381 pr = sc->sc_proto; 382 sc->sc_proto = LAGG_PROTO_NONE; 383 384 if (lagg_protos[pr].pr_detach != NULL) 385 lagg_protos[pr].pr_detach(sc); 386 } 387 388 static inline int 389 lagg_proto_start(struct lagg_softc *sc, struct mbuf *m) 390 { 391 392 return (lagg_protos[sc->sc_proto].pr_start(sc, m)); 393 } 394 395 static inline struct mbuf * 396 lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 397 { 398 399 return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m)); 400 } 401 402 static int 403 lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp) 404 { 405 406 if (lagg_protos[sc->sc_proto].pr_addport == NULL) 407 return (0); 408 else 409 return (lagg_protos[sc->sc_proto].pr_addport(lp)); 410 } 411 412 static void 413 lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp) 414 { 415 416 if (lagg_protos[sc->sc_proto].pr_delport != NULL) 417 lagg_protos[sc->sc_proto].pr_delport(lp); 418 } 419 420 static void 421 lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp) 422 { 423 424 if (lagg_protos[sc->sc_proto].pr_linkstate != NULL) 425 lagg_protos[sc->sc_proto].pr_linkstate(lp); 426 } 427 428 static void 429 lagg_proto_init(struct lagg_softc *sc) 430 { 431 432 if (lagg_protos[sc->sc_proto].pr_init != NULL) 433 lagg_protos[sc->sc_proto].pr_init(sc); 434 } 435 436 static void 437 lagg_proto_stop(struct lagg_softc *sc) 438 { 439 440 if (lagg_protos[sc->sc_proto].pr_stop != NULL) 441 lagg_protos[sc->sc_proto].pr_stop(sc); 442 } 443 444 static void 445 lagg_proto_lladdr(struct lagg_softc *sc) 446 { 447 448 if (lagg_protos[sc->sc_proto].pr_lladdr != NULL) 449 lagg_protos[sc->sc_proto].pr_lladdr(sc); 450 } 451 452 static void 453 lagg_proto_request(struct lagg_softc *sc, void *v) 454 { 455 456 if (lagg_protos[sc->sc_proto].pr_request != NULL) 457 lagg_protos[sc->sc_proto].pr_request(sc, v); 458 } 459 460 static void 461 lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v) 462 { 463 464 if (lagg_protos[sc->sc_proto].pr_portreq != NULL) 465 lagg_protos[sc->sc_proto].pr_portreq(lp, v); 466 } 467 468 /* 469 * This routine is run via an vlan 470 * config EVENT 471 */ 472 static void 473 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) 474 { 475 struct lagg_softc *sc = ifp->if_softc; 476 struct lagg_port *lp; 477 478 if (ifp->if_softc != arg) /* Not our event */ 479 return; 480 481 LAGG_XLOCK(sc); 482 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 483 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag); 484 LAGG_XUNLOCK(sc); 485 } 486 487 /* 488 * This routine is run via an vlan 489 * unconfig EVENT 490 */ 491 static void 492 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) 493 { 494 struct lagg_softc *sc = ifp->if_softc; 495 struct lagg_port *lp; 496 497 if (ifp->if_softc != arg) /* Not our event */ 498 return; 499 500 LAGG_XLOCK(sc); 501 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 502 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag); 503 LAGG_XUNLOCK(sc); 504 } 505 506 static int 507 lagg_clone_create(struct if_clone *ifc, char *name, size_t len, 508 struct ifc_data *ifd, struct ifnet **ifpp) 509 { 510 struct iflaggparam iflp; 511 struct lagg_softc *sc; 512 struct ifnet *ifp; 513 int if_type; 514 int error; 515 static const uint8_t eaddr[LAGG_ADDR_LEN]; 516 517 if (ifd->params != NULL) { 518 error = ifc_copyin(ifd, &iflp, sizeof(iflp)); 519 if (error) 520 return (error); 521 522 switch (iflp.lagg_type) { 523 case LAGG_TYPE_ETHERNET: 524 if_type = IFT_ETHER; 525 break; 526 case LAGG_TYPE_INFINIBAND: 527 if_type = IFT_INFINIBAND; 528 break; 529 default: 530 return (EINVAL); 531 } 532 } else { 533 if_type = IFT_ETHER; 534 } 535 536 sc = malloc(sizeof(*sc), M_LAGG, M_WAITOK | M_ZERO); 537 ifp = sc->sc_ifp = if_alloc(if_type); 538 if (ifp == NULL) { 539 free(sc, M_LAGG); 540 return (ENOSPC); 541 } 542 LAGG_SX_INIT(sc); 543 544 mtx_init(&sc->sc_mtx, "lagg-mtx", NULL, MTX_DEF); 545 callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 546 547 LAGG_XLOCK(sc); 548 if (V_def_use_flowid) 549 sc->sc_opts |= LAGG_OPT_USE_FLOWID; 550 if (V_def_use_numa) 551 sc->sc_opts |= LAGG_OPT_USE_NUMA; 552 sc->flowid_shift = V_def_flowid_shift; 553 554 /* Hash all layers by default */ 555 sc->sc_flags = MBUF_HASHFLAG_L2 | MBUF_HASHFLAG_L3 | MBUF_HASHFLAG_L4; 556 557 lagg_proto_attach(sc, LAGG_PROTO_DEFAULT); 558 559 CK_SLIST_INIT(&sc->sc_ports); 560 561 switch (if_type) { 562 case IFT_ETHER: 563 /* Initialise pseudo media types */ 564 ifmedia_init(&sc->sc_media, 0, lagg_media_change, 565 lagg_media_status); 566 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); 567 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); 568 569 if_initname(ifp, laggname, ifd->unit); 570 ifp->if_transmit = lagg_transmit_ethernet; 571 break; 572 case IFT_INFINIBAND: 573 if_initname(ifp, laggname, ifd->unit); 574 ifp->if_transmit = lagg_transmit_infiniband; 575 break; 576 default: 577 break; 578 } 579 ifp->if_softc = sc; 580 ifp->if_qflush = lagg_qflush; 581 ifp->if_init = lagg_init; 582 ifp->if_ioctl = lagg_ioctl; 583 ifp->if_get_counter = lagg_get_counter; 584 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 585 #if defined(KERN_TLS) || defined(RATELIMIT) 586 ifp->if_snd_tag_alloc = lagg_snd_tag_alloc; 587 ifp->if_ratelimit_query = lagg_ratelimit_query; 588 #endif 589 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS; 590 591 /* 592 * Attach as an ordinary ethernet device, children will be attached 593 * as special device IFT_IEEE8023ADLAG or IFT_INFINIBANDLAG. 594 */ 595 switch (if_type) { 596 case IFT_ETHER: 597 ether_ifattach(ifp, eaddr); 598 break; 599 case IFT_INFINIBAND: 600 infiniband_ifattach(ifp, eaddr, sc->sc_bcast_addr); 601 break; 602 default: 603 break; 604 } 605 606 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 607 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST); 608 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 609 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST); 610 611 /* Insert into the global list of laggs */ 612 LAGG_LIST_LOCK(); 613 SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries); 614 LAGG_LIST_UNLOCK(); 615 LAGG_XUNLOCK(sc); 616 *ifpp = ifp; 617 618 return (0); 619 } 620 621 static int 622 lagg_clone_destroy(struct if_clone *ifc, struct ifnet *ifp, uint32_t flags) 623 { 624 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 625 struct lagg_port *lp; 626 627 LAGG_XLOCK(sc); 628 sc->sc_destroying = 1; 629 lagg_stop(sc); 630 ifp->if_flags &= ~IFF_UP; 631 632 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach); 633 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach); 634 635 /* Shutdown and remove lagg ports */ 636 while ((lp = CK_SLIST_FIRST(&sc->sc_ports)) != NULL) 637 lagg_port_destroy(lp, 1); 638 639 /* Unhook the aggregation protocol */ 640 lagg_proto_detach(sc); 641 LAGG_XUNLOCK(sc); 642 643 switch (ifp->if_type) { 644 case IFT_ETHER: 645 ifmedia_removeall(&sc->sc_media); 646 ether_ifdetach(ifp); 647 break; 648 case IFT_INFINIBAND: 649 infiniband_ifdetach(ifp); 650 break; 651 default: 652 break; 653 } 654 if_free(ifp); 655 656 LAGG_LIST_LOCK(); 657 SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries); 658 LAGG_LIST_UNLOCK(); 659 660 mtx_destroy(&sc->sc_mtx); 661 LAGG_SX_DESTROY(sc); 662 free(sc, M_LAGG); 663 664 return (0); 665 } 666 667 static void 668 lagg_capabilities(struct lagg_softc *sc) 669 { 670 struct lagg_port *lp; 671 int cap, cap2, ena, ena2, pena, pena2; 672 uint64_t hwa; 673 struct ifnet_hw_tsomax hw_tsomax; 674 675 LAGG_XLOCK_ASSERT(sc); 676 677 /* Get common enabled capabilities for the lagg ports */ 678 ena = ena2 = ~0; 679 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 680 ena &= lp->lp_ifp->if_capenable; 681 ena2 &= lp->lp_ifp->if_capenable2; 682 } 683 if (CK_SLIST_FIRST(&sc->sc_ports) == NULL) 684 ena = ena2 = 0; 685 686 /* 687 * Apply common enabled capabilities back to the lagg ports. 688 * May require several iterations if they are dependent. 689 */ 690 do { 691 pena = ena; 692 pena2 = ena2; 693 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 694 lagg_setcaps(lp, ena, ena2); 695 ena &= lp->lp_ifp->if_capenable; 696 ena2 &= lp->lp_ifp->if_capenable2; 697 } 698 } while (pena != ena || pena2 != ena2); 699 700 /* Get other capabilities from the lagg ports */ 701 cap = cap2 = ~0; 702 hwa = ~(uint64_t)0; 703 memset(&hw_tsomax, 0, sizeof(hw_tsomax)); 704 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 705 cap &= lp->lp_ifp->if_capabilities; 706 cap2 &= lp->lp_ifp->if_capabilities2; 707 hwa &= lp->lp_ifp->if_hwassist; 708 if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax); 709 } 710 if (CK_SLIST_FIRST(&sc->sc_ports) == NULL) 711 cap = cap2 = hwa = 0; 712 713 if (sc->sc_ifp->if_capabilities != cap || 714 sc->sc_ifp->if_capenable != ena || 715 sc->sc_ifp->if_capenable2 != ena2 || 716 sc->sc_ifp->if_hwassist != hwa || 717 if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) { 718 sc->sc_ifp->if_capabilities = cap; 719 sc->sc_ifp->if_capabilities2 = cap2; 720 sc->sc_ifp->if_capenable = ena; 721 sc->sc_ifp->if_capenable2 = ena2; 722 sc->sc_ifp->if_hwassist = hwa; 723 getmicrotime(&sc->sc_ifp->if_lastchange); 724 725 if (sc->sc_ifflags & IFF_DEBUG) 726 if_printf(sc->sc_ifp, 727 "capabilities 0x%08x enabled 0x%08x\n", cap, ena); 728 } 729 } 730 731 static int 732 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp) 733 { 734 struct lagg_softc *sc_ptr; 735 struct lagg_port *lp, *tlp; 736 struct ifreq ifr; 737 int error, i, oldmtu; 738 int if_type; 739 uint64_t *pval; 740 741 LAGG_XLOCK_ASSERT(sc); 742 743 if (sc->sc_ifp == ifp) { 744 if_printf(sc->sc_ifp, 745 "cannot add a lagg to itself as a port\n"); 746 return (EINVAL); 747 } 748 749 if (sc->sc_destroying == 1) 750 return (ENXIO); 751 752 /* Limit the maximal number of lagg ports */ 753 if (sc->sc_count >= LAGG_MAX_PORTS) 754 return (ENOSPC); 755 756 /* Check if port has already been associated to a lagg */ 757 if (ifp->if_lagg != NULL) { 758 /* Port is already in the current lagg? */ 759 lp = (struct lagg_port *)ifp->if_lagg; 760 if (lp->lp_softc == sc) 761 return (EEXIST); 762 return (EBUSY); 763 } 764 765 switch (sc->sc_ifp->if_type) { 766 case IFT_ETHER: 767 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */ 768 if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN) 769 return (EPROTONOSUPPORT); 770 if_type = IFT_IEEE8023ADLAG; 771 break; 772 case IFT_INFINIBAND: 773 /* XXX Disallow non-infiniband interfaces */ 774 if (ifp->if_type != IFT_INFINIBAND) 775 return (EPROTONOSUPPORT); 776 if_type = IFT_INFINIBANDLAG; 777 break; 778 default: 779 break; 780 } 781 782 /* Allow the first Ethernet member to define the MTU */ 783 oldmtu = -1; 784 if (CK_SLIST_EMPTY(&sc->sc_ports)) { 785 sc->sc_ifp->if_mtu = ifp->if_mtu; 786 } else if (sc->sc_ifp->if_mtu != ifp->if_mtu) { 787 if (ifp->if_ioctl == NULL) { 788 if_printf(sc->sc_ifp, "cannot change MTU for %s\n", 789 ifp->if_xname); 790 return (EINVAL); 791 } 792 oldmtu = ifp->if_mtu; 793 strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name)); 794 ifr.ifr_mtu = sc->sc_ifp->if_mtu; 795 error = (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr); 796 if (error != 0) { 797 if_printf(sc->sc_ifp, "invalid MTU for %s\n", 798 ifp->if_xname); 799 return (error); 800 } 801 ifr.ifr_mtu = oldmtu; 802 } 803 804 lp = malloc(sizeof(struct lagg_port), M_LAGG, M_WAITOK | M_ZERO); 805 lp->lp_softc = sc; 806 807 /* Check if port is a stacked lagg */ 808 LAGG_LIST_LOCK(); 809 SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) { 810 if (ifp == sc_ptr->sc_ifp) { 811 LAGG_LIST_UNLOCK(); 812 free(lp, M_LAGG); 813 if (oldmtu != -1) 814 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, 815 (caddr_t)&ifr); 816 return (EINVAL); 817 /* XXX disable stacking for the moment, its untested */ 818 #ifdef LAGG_PORT_STACKING 819 lp->lp_flags |= LAGG_PORT_STACK; 820 if (lagg_port_checkstacking(sc_ptr) >= 821 LAGG_MAX_STACKING) { 822 LAGG_LIST_UNLOCK(); 823 free(lp, M_LAGG); 824 if (oldmtu != -1) 825 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, 826 (caddr_t)&ifr); 827 return (E2BIG); 828 } 829 #endif 830 } 831 } 832 LAGG_LIST_UNLOCK(); 833 834 if_ref(ifp); 835 lp->lp_ifp = ifp; 836 837 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ifp->if_addrlen); 838 lp->lp_ifcapenable = ifp->if_capenable; 839 if (CK_SLIST_EMPTY(&sc->sc_ports)) { 840 bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ifp->if_addrlen); 841 lagg_proto_lladdr(sc); 842 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp); 843 } else { 844 if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ifp->if_addrlen); 845 } 846 lagg_setflags(lp, 1); 847 848 if (CK_SLIST_EMPTY(&sc->sc_ports)) 849 sc->sc_primary = lp; 850 851 /* Change the interface type */ 852 lp->lp_iftype = ifp->if_type; 853 ifp->if_type = if_type; 854 ifp->if_lagg = lp; 855 lp->lp_ioctl = ifp->if_ioctl; 856 ifp->if_ioctl = lagg_port_ioctl; 857 lp->lp_output = ifp->if_output; 858 ifp->if_output = lagg_port_output; 859 860 /* Read port counters */ 861 pval = lp->port_counters.val; 862 for (i = 0; i < IFCOUNTERS; i++, pval++) 863 *pval = ifp->if_get_counter(ifp, i); 864 865 /* 866 * Insert into the list of ports. 867 * Keep ports sorted by if_index. It is handy, when configuration 868 * is predictable and `ifconfig laggN create ...` command 869 * will lead to the same result each time. 870 */ 871 CK_SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) { 872 if (tlp->lp_ifp->if_index < ifp->if_index && ( 873 CK_SLIST_NEXT(tlp, lp_entries) == NULL || 874 ((struct lagg_port*)CK_SLIST_NEXT(tlp, lp_entries))->lp_ifp->if_index > 875 ifp->if_index)) 876 break; 877 } 878 if (tlp != NULL) 879 CK_SLIST_INSERT_AFTER(tlp, lp, lp_entries); 880 else 881 CK_SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries); 882 sc->sc_count++; 883 884 lagg_setmulti(lp); 885 886 if ((error = lagg_proto_addport(sc, lp)) != 0) { 887 /* Remove the port, without calling pr_delport. */ 888 lagg_port_destroy(lp, 0); 889 if (oldmtu != -1) 890 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr); 891 return (error); 892 } 893 894 /* Update lagg capabilities */ 895 lagg_capabilities(sc); 896 lagg_linkstate(sc); 897 898 return (0); 899 } 900 901 #ifdef LAGG_PORT_STACKING 902 static int 903 lagg_port_checkstacking(struct lagg_softc *sc) 904 { 905 struct lagg_softc *sc_ptr; 906 struct lagg_port *lp; 907 int m = 0; 908 909 LAGG_SXLOCK_ASSERT(sc); 910 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 911 if (lp->lp_flags & LAGG_PORT_STACK) { 912 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc; 913 m = MAX(m, lagg_port_checkstacking(sc_ptr)); 914 } 915 } 916 917 return (m + 1); 918 } 919 #endif 920 921 static void 922 lagg_port_destroy_cb(epoch_context_t ec) 923 { 924 struct lagg_port *lp; 925 struct ifnet *ifp; 926 927 lp = __containerof(ec, struct lagg_port, lp_epoch_ctx); 928 ifp = lp->lp_ifp; 929 930 if_rele(ifp); 931 free(lp, M_LAGG); 932 } 933 934 static int 935 lagg_port_destroy(struct lagg_port *lp, int rundelport) 936 { 937 struct lagg_softc *sc = lp->lp_softc; 938 struct lagg_port *lp_ptr, *lp0; 939 struct ifnet *ifp = lp->lp_ifp; 940 uint64_t *pval, vdiff; 941 int i; 942 943 LAGG_XLOCK_ASSERT(sc); 944 945 if (rundelport) 946 lagg_proto_delport(sc, lp); 947 948 if (lp->lp_detaching == 0) 949 lagg_clrmulti(lp); 950 951 /* Restore interface */ 952 ifp->if_type = lp->lp_iftype; 953 ifp->if_ioctl = lp->lp_ioctl; 954 ifp->if_output = lp->lp_output; 955 ifp->if_lagg = NULL; 956 957 /* Update detached port counters */ 958 pval = lp->port_counters.val; 959 for (i = 0; i < IFCOUNTERS; i++, pval++) { 960 vdiff = ifp->if_get_counter(ifp, i) - *pval; 961 sc->detached_counters.val[i] += vdiff; 962 } 963 964 /* Finally, remove the port from the lagg */ 965 CK_SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries); 966 sc->sc_count--; 967 968 /* Update the primary interface */ 969 if (lp == sc->sc_primary) { 970 uint8_t lladdr[LAGG_ADDR_LEN]; 971 972 if ((lp0 = CK_SLIST_FIRST(&sc->sc_ports)) == NULL) 973 bzero(&lladdr, LAGG_ADDR_LEN); 974 else 975 bcopy(lp0->lp_lladdr, lladdr, LAGG_ADDR_LEN); 976 sc->sc_primary = lp0; 977 if (sc->sc_destroying == 0) { 978 bcopy(lladdr, IF_LLADDR(sc->sc_ifp), sc->sc_ifp->if_addrlen); 979 lagg_proto_lladdr(sc); 980 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp); 981 982 /* 983 * Update lladdr for each port (new primary needs update 984 * as well, to switch from old lladdr to its 'real' one). 985 * We can skip this if the lagg is being destroyed. 986 */ 987 CK_SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries) 988 if_setlladdr(lp_ptr->lp_ifp, lladdr, 989 lp_ptr->lp_ifp->if_addrlen); 990 } 991 } 992 993 if (lp->lp_ifflags) 994 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__); 995 996 if (lp->lp_detaching == 0) { 997 lagg_setflags(lp, 0); 998 lagg_setcaps(lp, lp->lp_ifcapenable, lp->lp_ifcapenable2); 999 if_setlladdr(ifp, lp->lp_lladdr, ifp->if_addrlen); 1000 } 1001 1002 /* 1003 * free port and release it's ifnet reference after a grace period has 1004 * elapsed. 1005 */ 1006 NET_EPOCH_CALL(lagg_port_destroy_cb, &lp->lp_epoch_ctx); 1007 /* Update lagg capabilities */ 1008 lagg_capabilities(sc); 1009 lagg_linkstate(sc); 1010 1011 return (0); 1012 } 1013 1014 static int 1015 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1016 { 1017 struct epoch_tracker et; 1018 struct lagg_reqport *rp = (struct lagg_reqport *)data; 1019 struct lagg_softc *sc; 1020 struct lagg_port *lp = NULL; 1021 int error = 0; 1022 1023 /* Should be checked by the caller */ 1024 switch (ifp->if_type) { 1025 case IFT_IEEE8023ADLAG: 1026 case IFT_INFINIBANDLAG: 1027 if ((lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL) 1028 goto fallback; 1029 break; 1030 default: 1031 goto fallback; 1032 } 1033 1034 switch (cmd) { 1035 case SIOCGLAGGPORT: 1036 if (rp->rp_portname[0] == '\0' || 1037 ifunit(rp->rp_portname) != ifp) { 1038 error = EINVAL; 1039 break; 1040 } 1041 1042 NET_EPOCH_ENTER(et); 1043 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) { 1044 error = ENOENT; 1045 NET_EPOCH_EXIT(et); 1046 break; 1047 } 1048 1049 LAGG_SLOCK(sc); 1050 lagg_port2req(lp, rp); 1051 LAGG_SUNLOCK(sc); 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_SLOCK(sc); 1589 lagg_port2req(lp, rp); 1590 LAGG_SUNLOCK(sc); 1591 NET_EPOCH_EXIT(et); 1592 if_rele(tpif); 1593 break; 1594 case SIOCSLAGGPORT: 1595 error = priv_check(td, PRIV_NET_LAGG); 1596 if (error) 1597 break; 1598 if (rp->rp_portname[0] == '\0' || 1599 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1600 error = EINVAL; 1601 break; 1602 } 1603 #ifdef INET6 1604 /* 1605 * A laggport interface should not have inet6 address 1606 * because two interfaces with a valid link-local 1607 * scope zone must not be merged in any form. This 1608 * restriction is needed to prevent violation of 1609 * link-local scope zone. Attempts to add a laggport 1610 * interface which has inet6 addresses triggers 1611 * removal of all inet6 addresses on the member 1612 * interface. 1613 */ 1614 if (in6ifa_llaonifp(tpif)) { 1615 in6_ifdetach(tpif); 1616 if_printf(sc->sc_ifp, 1617 "IPv6 addresses on %s have been removed " 1618 "before adding it as a member to prevent " 1619 "IPv6 address scope violation.\n", 1620 tpif->if_xname); 1621 } 1622 #endif 1623 oldmtu = ifp->if_mtu; 1624 LAGG_XLOCK(sc); 1625 error = lagg_port_create(sc, tpif); 1626 LAGG_XUNLOCK(sc); 1627 if_rele(tpif); 1628 1629 /* 1630 * LAGG MTU may change during addition of the first port. 1631 * If it did, do network layer specific procedure. 1632 */ 1633 if (ifp->if_mtu != oldmtu) 1634 if_notifymtu(ifp); 1635 1636 VLAN_CAPABILITIES(ifp); 1637 break; 1638 case SIOCSLAGGDELPORT: 1639 error = priv_check(td, PRIV_NET_LAGG); 1640 if (error) 1641 break; 1642 if (rp->rp_portname[0] == '\0' || 1643 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1644 error = EINVAL; 1645 break; 1646 } 1647 1648 LAGG_XLOCK(sc); 1649 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || 1650 lp->lp_softc != sc) { 1651 error = ENOENT; 1652 LAGG_XUNLOCK(sc); 1653 if_rele(tpif); 1654 break; 1655 } 1656 1657 error = lagg_port_destroy(lp, 1); 1658 LAGG_XUNLOCK(sc); 1659 if_rele(tpif); 1660 VLAN_CAPABILITIES(ifp); 1661 break; 1662 case SIOCSIFFLAGS: 1663 /* Set flags on ports too */ 1664 LAGG_XLOCK(sc); 1665 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1666 lagg_setflags(lp, 1); 1667 } 1668 1669 if (!(ifp->if_flags & IFF_UP) && 1670 (ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1671 /* 1672 * If interface is marked down and it is running, 1673 * then stop and disable it. 1674 */ 1675 lagg_stop(sc); 1676 LAGG_XUNLOCK(sc); 1677 } else if ((ifp->if_flags & IFF_UP) && 1678 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1679 /* 1680 * If interface is marked up and it is stopped, then 1681 * start it. 1682 */ 1683 LAGG_XUNLOCK(sc); 1684 (*ifp->if_init)(sc); 1685 } else 1686 LAGG_XUNLOCK(sc); 1687 break; 1688 case SIOCADDMULTI: 1689 case SIOCDELMULTI: 1690 LAGG_XLOCK(sc); 1691 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1692 lagg_clrmulti(lp); 1693 lagg_setmulti(lp); 1694 } 1695 LAGG_XUNLOCK(sc); 1696 error = 0; 1697 break; 1698 case SIOCSIFMEDIA: 1699 case SIOCGIFMEDIA: 1700 if (ifp->if_type == IFT_INFINIBAND) 1701 error = EINVAL; 1702 else 1703 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1704 break; 1705 1706 case SIOCSIFCAP: 1707 case SIOCSIFCAPNV: 1708 LAGG_XLOCK(sc); 1709 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1710 if (lp->lp_ioctl != NULL) 1711 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1712 } 1713 lagg_capabilities(sc); 1714 LAGG_XUNLOCK(sc); 1715 VLAN_CAPABILITIES(ifp); 1716 error = 0; 1717 break; 1718 1719 case SIOCGIFCAPNV: 1720 error = 0; 1721 break; 1722 1723 case SIOCSIFMTU: 1724 LAGG_XLOCK(sc); 1725 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1726 if (lp->lp_ioctl != NULL) 1727 error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1728 else 1729 error = EINVAL; 1730 if (error != 0) { 1731 if_printf(ifp, 1732 "failed to change MTU to %d on port %s, " 1733 "reverting all ports to original MTU (%d)\n", 1734 ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu); 1735 break; 1736 } 1737 } 1738 if (error == 0) { 1739 ifp->if_mtu = ifr->ifr_mtu; 1740 } else { 1741 /* set every port back to the original MTU */ 1742 ifr->ifr_mtu = ifp->if_mtu; 1743 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1744 if (lp->lp_ioctl != NULL) 1745 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1746 } 1747 } 1748 lagg_capabilities(sc); 1749 LAGG_XUNLOCK(sc); 1750 VLAN_CAPABILITIES(ifp); 1751 break; 1752 1753 default: 1754 error = ether_ioctl(ifp, cmd, data); 1755 break; 1756 } 1757 return (error); 1758 } 1759 1760 #if defined(KERN_TLS) || defined(RATELIMIT) 1761 #ifdef RATELIMIT 1762 static const struct if_snd_tag_sw lagg_snd_tag_ul_sw = { 1763 .snd_tag_modify = lagg_snd_tag_modify, 1764 .snd_tag_query = lagg_snd_tag_query, 1765 .snd_tag_free = lagg_snd_tag_free, 1766 .next_snd_tag = lagg_next_snd_tag, 1767 .type = IF_SND_TAG_TYPE_UNLIMITED 1768 }; 1769 1770 static const struct if_snd_tag_sw lagg_snd_tag_rl_sw = { 1771 .snd_tag_modify = lagg_snd_tag_modify, 1772 .snd_tag_query = lagg_snd_tag_query, 1773 .snd_tag_free = lagg_snd_tag_free, 1774 .next_snd_tag = lagg_next_snd_tag, 1775 .type = IF_SND_TAG_TYPE_RATE_LIMIT 1776 }; 1777 #endif 1778 1779 #ifdef KERN_TLS 1780 static const struct if_snd_tag_sw lagg_snd_tag_tls_sw = { 1781 .snd_tag_modify = lagg_snd_tag_modify, 1782 .snd_tag_query = lagg_snd_tag_query, 1783 .snd_tag_free = lagg_snd_tag_free, 1784 .next_snd_tag = lagg_next_snd_tag, 1785 .type = IF_SND_TAG_TYPE_TLS 1786 }; 1787 1788 #ifdef RATELIMIT 1789 static const struct if_snd_tag_sw lagg_snd_tag_tls_rl_sw = { 1790 .snd_tag_modify = lagg_snd_tag_modify, 1791 .snd_tag_query = lagg_snd_tag_query, 1792 .snd_tag_free = lagg_snd_tag_free, 1793 .next_snd_tag = lagg_next_snd_tag, 1794 .type = IF_SND_TAG_TYPE_TLS_RATE_LIMIT 1795 }; 1796 #endif 1797 #endif 1798 1799 static inline struct lagg_snd_tag * 1800 mst_to_lst(struct m_snd_tag *mst) 1801 { 1802 1803 return (__containerof(mst, struct lagg_snd_tag, com)); 1804 } 1805 1806 /* 1807 * Look up the port used by a specific flow. This only works for lagg 1808 * protocols with deterministic port mappings (e.g. not roundrobin). 1809 * In addition protocols which use a hash to map flows to ports must 1810 * be configured to use the mbuf flowid rather than hashing packet 1811 * contents. 1812 */ 1813 static struct lagg_port * 1814 lookup_snd_tag_port(struct ifnet *ifp, uint32_t flowid, uint32_t flowtype, 1815 uint8_t numa_domain) 1816 { 1817 struct lagg_softc *sc; 1818 struct lagg_port *lp; 1819 struct lagg_lb *lb; 1820 uint32_t hash, p; 1821 int err; 1822 1823 sc = ifp->if_softc; 1824 1825 switch (sc->sc_proto) { 1826 case LAGG_PROTO_FAILOVER: 1827 return (lagg_link_active(sc, sc->sc_primary)); 1828 case LAGG_PROTO_LOADBALANCE: 1829 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1830 flowtype == M_HASHTYPE_NONE) 1831 return (NULL); 1832 p = flowid >> sc->flowid_shift; 1833 p %= sc->sc_count; 1834 lb = (struct lagg_lb *)sc->sc_psc; 1835 lp = lb->lb_ports[p]; 1836 return (lagg_link_active(sc, lp)); 1837 case LAGG_PROTO_LACP: 1838 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1839 flowtype == M_HASHTYPE_NONE) 1840 return (NULL); 1841 hash = flowid >> sc->flowid_shift; 1842 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, &err)); 1843 default: 1844 return (NULL); 1845 } 1846 } 1847 1848 static int 1849 lagg_snd_tag_alloc(struct ifnet *ifp, 1850 union if_snd_tag_alloc_params *params, 1851 struct m_snd_tag **ppmt) 1852 { 1853 struct epoch_tracker et; 1854 const struct if_snd_tag_sw *sw; 1855 struct lagg_snd_tag *lst; 1856 struct lagg_port *lp; 1857 struct ifnet *lp_ifp; 1858 struct m_snd_tag *mst; 1859 int error; 1860 1861 switch (params->hdr.type) { 1862 #ifdef RATELIMIT 1863 case IF_SND_TAG_TYPE_UNLIMITED: 1864 sw = &lagg_snd_tag_ul_sw; 1865 break; 1866 case IF_SND_TAG_TYPE_RATE_LIMIT: 1867 sw = &lagg_snd_tag_rl_sw; 1868 break; 1869 #endif 1870 #ifdef KERN_TLS 1871 case IF_SND_TAG_TYPE_TLS: 1872 sw = &lagg_snd_tag_tls_sw; 1873 break; 1874 case IF_SND_TAG_TYPE_TLS_RX: 1875 /* Return tag from port interface directly. */ 1876 sw = NULL; 1877 break; 1878 #ifdef RATELIMIT 1879 case IF_SND_TAG_TYPE_TLS_RATE_LIMIT: 1880 sw = &lagg_snd_tag_tls_rl_sw; 1881 break; 1882 #endif 1883 #endif 1884 default: 1885 return (EOPNOTSUPP); 1886 } 1887 1888 NET_EPOCH_ENTER(et); 1889 lp = lookup_snd_tag_port(ifp, params->hdr.flowid, 1890 params->hdr.flowtype, params->hdr.numa_domain); 1891 if (lp == NULL) { 1892 NET_EPOCH_EXIT(et); 1893 return (EOPNOTSUPP); 1894 } 1895 if (lp->lp_ifp == NULL) { 1896 NET_EPOCH_EXIT(et); 1897 return (EOPNOTSUPP); 1898 } 1899 lp_ifp = lp->lp_ifp; 1900 if_ref(lp_ifp); 1901 NET_EPOCH_EXIT(et); 1902 1903 if (sw != NULL) { 1904 lst = malloc(sizeof(*lst), M_LAGG, M_NOWAIT); 1905 if (lst == NULL) { 1906 if_rele(lp_ifp); 1907 return (ENOMEM); 1908 } 1909 } else 1910 lst = NULL; 1911 1912 error = m_snd_tag_alloc(lp_ifp, params, &mst); 1913 if_rele(lp_ifp); 1914 if (error) { 1915 free(lst, M_LAGG); 1916 return (error); 1917 } 1918 1919 if (sw != NULL) { 1920 m_snd_tag_init(&lst->com, ifp, sw); 1921 lst->tag = mst; 1922 1923 *ppmt = &lst->com; 1924 } else 1925 *ppmt = mst; 1926 1927 return (0); 1928 } 1929 1930 static struct m_snd_tag * 1931 lagg_next_snd_tag(struct m_snd_tag *mst) 1932 { 1933 struct lagg_snd_tag *lst; 1934 1935 lst = mst_to_lst(mst); 1936 return (lst->tag); 1937 } 1938 1939 static int 1940 lagg_snd_tag_modify(struct m_snd_tag *mst, 1941 union if_snd_tag_modify_params *params) 1942 { 1943 struct lagg_snd_tag *lst; 1944 1945 lst = mst_to_lst(mst); 1946 return (lst->tag->sw->snd_tag_modify(lst->tag, params)); 1947 } 1948 1949 static int 1950 lagg_snd_tag_query(struct m_snd_tag *mst, 1951 union if_snd_tag_query_params *params) 1952 { 1953 struct lagg_snd_tag *lst; 1954 1955 lst = mst_to_lst(mst); 1956 return (lst->tag->sw->snd_tag_query(lst->tag, params)); 1957 } 1958 1959 static void 1960 lagg_snd_tag_free(struct m_snd_tag *mst) 1961 { 1962 struct lagg_snd_tag *lst; 1963 1964 lst = mst_to_lst(mst); 1965 m_snd_tag_rele(lst->tag); 1966 free(lst, M_LAGG); 1967 } 1968 1969 static void 1970 lagg_ratelimit_query(struct ifnet *ifp __unused, struct if_ratelimit_query_results *q) 1971 { 1972 /* 1973 * For lagg, we have an indirect 1974 * interface. The caller needs to 1975 * get a ratelimit tag on the actual 1976 * interface the flow will go on. 1977 */ 1978 q->rate_table = NULL; 1979 q->flags = RT_IS_INDIRECT; 1980 q->max_flows = 0; 1981 q->number_of_rates = 0; 1982 } 1983 #endif 1984 1985 static int 1986 lagg_setmulti(struct lagg_port *lp) 1987 { 1988 struct lagg_softc *sc = lp->lp_softc; 1989 struct ifnet *ifp = lp->lp_ifp; 1990 struct ifnet *scifp = sc->sc_ifp; 1991 struct lagg_mc *mc; 1992 struct ifmultiaddr *ifma; 1993 int error; 1994 1995 IF_ADDR_WLOCK(scifp); 1996 CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) { 1997 if (ifma->ifma_addr->sa_family != AF_LINK) 1998 continue; 1999 mc = malloc(sizeof(struct lagg_mc), M_LAGG, M_NOWAIT); 2000 if (mc == NULL) { 2001 IF_ADDR_WUNLOCK(scifp); 2002 return (ENOMEM); 2003 } 2004 bcopy(ifma->ifma_addr, &mc->mc_addr, ifma->ifma_addr->sa_len); 2005 mc->mc_addr.sdl_index = ifp->if_index; 2006 mc->mc_ifma = NULL; 2007 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries); 2008 } 2009 IF_ADDR_WUNLOCK(scifp); 2010 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) { 2011 error = if_addmulti(ifp, 2012 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma); 2013 if (error) 2014 return (error); 2015 } 2016 return (0); 2017 } 2018 2019 static int 2020 lagg_clrmulti(struct lagg_port *lp) 2021 { 2022 struct lagg_mc *mc; 2023 2024 LAGG_XLOCK_ASSERT(lp->lp_softc); 2025 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) { 2026 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries); 2027 if (mc->mc_ifma && lp->lp_detaching == 0) 2028 if_delmulti_ifma(mc->mc_ifma); 2029 free(mc, M_LAGG); 2030 } 2031 return (0); 2032 } 2033 2034 static void 2035 lagg_setcaps(struct lagg_port *lp, int cap, int cap2) 2036 { 2037 struct ifreq ifr; 2038 struct siocsifcapnv_driver_data drv_ioctl_data; 2039 2040 if (lp->lp_ifp->if_capenable == cap && 2041 lp->lp_ifp->if_capenable2 == cap2) 2042 return; 2043 if (lp->lp_ioctl == NULL) 2044 return; 2045 /* XXX */ 2046 if ((lp->lp_ifp->if_capabilities & IFCAP_NV) != 0) { 2047 drv_ioctl_data.reqcap = cap; 2048 drv_ioctl_data.reqcap2 = cap2; 2049 drv_ioctl_data.nvcap = NULL; 2050 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAPNV, 2051 (caddr_t)&drv_ioctl_data); 2052 } else { 2053 ifr.ifr_reqcap = cap; 2054 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr); 2055 } 2056 } 2057 2058 /* Handle a ref counted flag that should be set on the lagg port as well */ 2059 static int 2060 lagg_setflag(struct lagg_port *lp, int flag, int status, 2061 int (*func)(struct ifnet *, int)) 2062 { 2063 struct lagg_softc *sc = lp->lp_softc; 2064 struct ifnet *scifp = sc->sc_ifp; 2065 struct ifnet *ifp = lp->lp_ifp; 2066 int error; 2067 2068 LAGG_XLOCK_ASSERT(sc); 2069 2070 status = status ? (scifp->if_flags & flag) : 0; 2071 /* Now "status" contains the flag value or 0 */ 2072 2073 /* 2074 * See if recorded ports status is different from what 2075 * we want it to be. If it is, flip it. We record ports 2076 * status in lp_ifflags so that we won't clear ports flag 2077 * we haven't set. In fact, we don't clear or set ports 2078 * flags directly, but get or release references to them. 2079 * That's why we can be sure that recorded flags still are 2080 * in accord with actual ports flags. 2081 */ 2082 if (status != (lp->lp_ifflags & flag)) { 2083 error = (*func)(ifp, status); 2084 if (error) 2085 return (error); 2086 lp->lp_ifflags &= ~flag; 2087 lp->lp_ifflags |= status; 2088 } 2089 return (0); 2090 } 2091 2092 /* 2093 * Handle IFF_* flags that require certain changes on the lagg port 2094 * if "status" is true, update ports flags respective to the lagg 2095 * if "status" is false, forcedly clear the flags set on port. 2096 */ 2097 static int 2098 lagg_setflags(struct lagg_port *lp, int status) 2099 { 2100 int error, i; 2101 2102 for (i = 0; lagg_pflags[i].flag; i++) { 2103 error = lagg_setflag(lp, lagg_pflags[i].flag, 2104 status, lagg_pflags[i].func); 2105 if (error) 2106 return (error); 2107 } 2108 return (0); 2109 } 2110 2111 static int 2112 lagg_transmit_ethernet(struct ifnet *ifp, struct mbuf *m) 2113 { 2114 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2115 2116 NET_EPOCH_ASSERT(); 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 /* We need a Tx algorithm and at least one port */ 2122 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2123 m_freem(m); 2124 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2125 return (ENXIO); 2126 } 2127 2128 ETHER_BPF_MTAP(ifp, m); 2129 2130 return (lagg_proto_start(sc, m)); 2131 } 2132 2133 static int 2134 lagg_transmit_infiniband(struct ifnet *ifp, struct mbuf *m) 2135 { 2136 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2137 2138 NET_EPOCH_ASSERT(); 2139 #if defined(KERN_TLS) || defined(RATELIMIT) 2140 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) 2141 MPASS(m->m_pkthdr.snd_tag->ifp == ifp); 2142 #endif 2143 /* We need a Tx algorithm and at least one port */ 2144 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2145 m_freem(m); 2146 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2147 return (ENXIO); 2148 } 2149 2150 infiniband_bpf_mtap(ifp, m); 2151 2152 return (lagg_proto_start(sc, m)); 2153 } 2154 2155 /* 2156 * The ifp->if_qflush entry point for lagg(4) is no-op. 2157 */ 2158 static void 2159 lagg_qflush(struct ifnet *ifp __unused) 2160 { 2161 } 2162 2163 static struct mbuf * 2164 lagg_input_ethernet(struct ifnet *ifp, struct mbuf *m) 2165 { 2166 struct lagg_port *lp = ifp->if_lagg; 2167 struct lagg_softc *sc = lp->lp_softc; 2168 struct ifnet *scifp = sc->sc_ifp; 2169 2170 NET_EPOCH_ASSERT(); 2171 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2172 lp->lp_detaching != 0 || 2173 sc->sc_proto == LAGG_PROTO_NONE) { 2174 m_freem(m); 2175 return (NULL); 2176 } 2177 2178 m = lagg_proto_input(sc, lp, m); 2179 if (m != NULL) { 2180 ETHER_BPF_MTAP(scifp, m); 2181 2182 if ((scifp->if_flags & IFF_MONITOR) != 0) { 2183 m_freem(m); 2184 m = NULL; 2185 } 2186 } 2187 2188 #ifdef DEV_NETMAP 2189 if (m != NULL && scifp->if_capenable & IFCAP_NETMAP) { 2190 scifp->if_input(scifp, m); 2191 m = NULL; 2192 } 2193 #endif /* DEV_NETMAP */ 2194 2195 return (m); 2196 } 2197 2198 static struct mbuf * 2199 lagg_input_infiniband(struct ifnet *ifp, struct mbuf *m) 2200 { 2201 struct lagg_port *lp = ifp->if_lagg; 2202 struct lagg_softc *sc = lp->lp_softc; 2203 struct ifnet *scifp = sc->sc_ifp; 2204 2205 NET_EPOCH_ASSERT(); 2206 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2207 lp->lp_detaching != 0 || 2208 sc->sc_proto == LAGG_PROTO_NONE) { 2209 m_freem(m); 2210 return (NULL); 2211 } 2212 2213 m = lagg_proto_input(sc, lp, m); 2214 if (m != NULL) { 2215 infiniband_bpf_mtap(scifp, m); 2216 2217 if ((scifp->if_flags & IFF_MONITOR) != 0) { 2218 m_freem(m); 2219 m = NULL; 2220 } 2221 } 2222 2223 return (m); 2224 } 2225 2226 static int 2227 lagg_media_change(struct ifnet *ifp) 2228 { 2229 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2230 2231 if (sc->sc_ifflags & IFF_DEBUG) 2232 printf("%s\n", __func__); 2233 2234 /* Ignore */ 2235 return (0); 2236 } 2237 2238 static void 2239 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr) 2240 { 2241 struct epoch_tracker et; 2242 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2243 struct lagg_port *lp; 2244 2245 imr->ifm_status = IFM_AVALID; 2246 imr->ifm_active = IFM_ETHER | IFM_AUTO; 2247 2248 NET_EPOCH_ENTER(et); 2249 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2250 if (LAGG_PORTACTIVE(lp)) 2251 imr->ifm_status |= IFM_ACTIVE; 2252 } 2253 NET_EPOCH_EXIT(et); 2254 } 2255 2256 static void 2257 lagg_linkstate(struct lagg_softc *sc) 2258 { 2259 struct epoch_tracker et; 2260 struct lagg_port *lp; 2261 int new_link = LINK_STATE_DOWN; 2262 uint64_t speed; 2263 2264 LAGG_XLOCK_ASSERT(sc); 2265 2266 /* LACP handles link state itself */ 2267 if (sc->sc_proto == LAGG_PROTO_LACP) 2268 return; 2269 2270 /* Our link is considered up if at least one of our ports is active */ 2271 NET_EPOCH_ENTER(et); 2272 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2273 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) { 2274 new_link = LINK_STATE_UP; 2275 break; 2276 } 2277 } 2278 NET_EPOCH_EXIT(et); 2279 if_link_state_change(sc->sc_ifp, new_link); 2280 2281 /* Update if_baudrate to reflect the max possible speed */ 2282 switch (sc->sc_proto) { 2283 case LAGG_PROTO_FAILOVER: 2284 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ? 2285 sc->sc_primary->lp_ifp->if_baudrate : 0; 2286 break; 2287 case LAGG_PROTO_ROUNDROBIN: 2288 case LAGG_PROTO_LOADBALANCE: 2289 case LAGG_PROTO_BROADCAST: 2290 speed = 0; 2291 NET_EPOCH_ENTER(et); 2292 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2293 speed += lp->lp_ifp->if_baudrate; 2294 NET_EPOCH_EXIT(et); 2295 sc->sc_ifp->if_baudrate = speed; 2296 break; 2297 case LAGG_PROTO_LACP: 2298 /* LACP updates if_baudrate itself */ 2299 break; 2300 } 2301 } 2302 2303 static void 2304 lagg_port_state(struct ifnet *ifp, int state) 2305 { 2306 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg; 2307 struct lagg_softc *sc = NULL; 2308 2309 if (lp != NULL) 2310 sc = lp->lp_softc; 2311 if (sc == NULL) 2312 return; 2313 2314 LAGG_XLOCK(sc); 2315 lagg_linkstate(sc); 2316 lagg_proto_linkstate(sc, lp); 2317 LAGG_XUNLOCK(sc); 2318 } 2319 2320 struct lagg_port * 2321 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp) 2322 { 2323 struct lagg_port *lp_next, *rval = NULL; 2324 2325 /* 2326 * Search a port which reports an active link state. 2327 */ 2328 2329 #ifdef INVARIANTS 2330 /* 2331 * This is called with either in the network epoch 2332 * or with LAGG_XLOCK(sc) held. 2333 */ 2334 if (!in_epoch(net_epoch_preempt)) 2335 LAGG_XLOCK_ASSERT(sc); 2336 #endif 2337 2338 if (lp == NULL) 2339 goto search; 2340 if (LAGG_PORTACTIVE(lp)) { 2341 rval = lp; 2342 goto found; 2343 } 2344 if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL && 2345 LAGG_PORTACTIVE(lp_next)) { 2346 rval = lp_next; 2347 goto found; 2348 } 2349 2350 search: 2351 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2352 if (LAGG_PORTACTIVE(lp_next)) { 2353 return (lp_next); 2354 } 2355 } 2356 found: 2357 return (rval); 2358 } 2359 2360 int 2361 lagg_enqueue(struct ifnet *ifp, struct mbuf *m) 2362 { 2363 2364 #if defined(KERN_TLS) || defined(RATELIMIT) 2365 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) { 2366 struct lagg_snd_tag *lst; 2367 struct m_snd_tag *mst; 2368 2369 mst = m->m_pkthdr.snd_tag; 2370 lst = mst_to_lst(mst); 2371 if (lst->tag->ifp != ifp) { 2372 m_freem(m); 2373 return (EAGAIN); 2374 } 2375 m->m_pkthdr.snd_tag = m_snd_tag_ref(lst->tag); 2376 m_snd_tag_rele(mst); 2377 } 2378 #endif 2379 return (ifp->if_transmit)(ifp, m); 2380 } 2381 2382 /* 2383 * Simple round robin aggregation 2384 */ 2385 static void 2386 lagg_rr_attach(struct lagg_softc *sc) 2387 { 2388 sc->sc_seq = 0; 2389 sc->sc_stride = 1; 2390 } 2391 2392 static int 2393 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m) 2394 { 2395 struct lagg_port *lp; 2396 uint32_t p; 2397 2398 p = atomic_fetchadd_32(&sc->sc_seq, 1); 2399 p /= sc->sc_stride; 2400 p %= sc->sc_count; 2401 lp = CK_SLIST_FIRST(&sc->sc_ports); 2402 2403 while (p--) 2404 lp = CK_SLIST_NEXT(lp, lp_entries); 2405 2406 /* 2407 * Check the port's link state. This will return the next active 2408 * port if the link is down or the port is NULL. 2409 */ 2410 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2411 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2412 m_freem(m); 2413 return (ENETDOWN); 2414 } 2415 2416 /* Send mbuf */ 2417 return (lagg_enqueue(lp->lp_ifp, m)); 2418 } 2419 2420 /* 2421 * Broadcast mode 2422 */ 2423 static int 2424 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m) 2425 { 2426 int errors = 0; 2427 int ret; 2428 struct lagg_port *lp, *last = NULL; 2429 struct mbuf *m0; 2430 2431 NET_EPOCH_ASSERT(); 2432 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2433 if (!LAGG_PORTACTIVE(lp)) 2434 continue; 2435 2436 if (last != NULL) { 2437 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT); 2438 if (m0 == NULL) { 2439 ret = ENOBUFS; 2440 errors++; 2441 break; 2442 } 2443 lagg_enqueue(last->lp_ifp, m0); 2444 } 2445 last = lp; 2446 } 2447 2448 if (last == NULL) { 2449 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2450 m_freem(m); 2451 return (ENOENT); 2452 } 2453 if ((last = lagg_link_active(sc, last)) == NULL) { 2454 errors++; 2455 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2456 m_freem(m); 2457 return (ENETDOWN); 2458 } 2459 2460 ret = lagg_enqueue(last->lp_ifp, m); 2461 if (errors != 0) 2462 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2463 2464 return (ret); 2465 } 2466 2467 /* 2468 * Active failover 2469 */ 2470 static int 2471 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m) 2472 { 2473 struct lagg_port *lp; 2474 2475 /* Use the master port if active or the next available port */ 2476 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) { 2477 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2478 m_freem(m); 2479 return (ENETDOWN); 2480 } 2481 2482 /* Send mbuf */ 2483 return (lagg_enqueue(lp->lp_ifp, m)); 2484 } 2485 2486 static struct mbuf * 2487 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2488 { 2489 struct ifnet *ifp = sc->sc_ifp; 2490 struct lagg_port *tmp_tp; 2491 2492 if (lp == sc->sc_primary || V_lagg_failover_rx_all) { 2493 m->m_pkthdr.rcvif = ifp; 2494 return (m); 2495 } 2496 2497 if (!LAGG_PORTACTIVE(sc->sc_primary)) { 2498 tmp_tp = lagg_link_active(sc, sc->sc_primary); 2499 /* 2500 * If tmp_tp is null, we've received a packet when all 2501 * our links are down. Weird, but process it anyways. 2502 */ 2503 if (tmp_tp == NULL || tmp_tp == lp) { 2504 m->m_pkthdr.rcvif = ifp; 2505 return (m); 2506 } 2507 } 2508 2509 m_freem(m); 2510 return (NULL); 2511 } 2512 2513 /* 2514 * Loadbalancing 2515 */ 2516 static void 2517 lagg_lb_attach(struct lagg_softc *sc) 2518 { 2519 struct lagg_port *lp; 2520 struct lagg_lb *lb; 2521 2522 LAGG_XLOCK_ASSERT(sc); 2523 lb = malloc(sizeof(struct lagg_lb), M_LAGG, M_WAITOK | M_ZERO); 2524 lb->lb_key = m_ether_tcpip_hash_init(); 2525 sc->sc_psc = lb; 2526 2527 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2528 lagg_lb_port_create(lp); 2529 } 2530 2531 static void 2532 lagg_lb_detach(struct lagg_softc *sc) 2533 { 2534 struct lagg_lb *lb; 2535 2536 lb = (struct lagg_lb *)sc->sc_psc; 2537 if (lb != NULL) 2538 free(lb, M_LAGG); 2539 } 2540 2541 static int 2542 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp) 2543 { 2544 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2545 struct lagg_port *lp_next; 2546 int i = 0, rv; 2547 2548 rv = 0; 2549 bzero(&lb->lb_ports, sizeof(lb->lb_ports)); 2550 LAGG_XLOCK_ASSERT(sc); 2551 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2552 if (lp_next == lp) 2553 continue; 2554 if (i >= LAGG_MAX_PORTS) { 2555 rv = EINVAL; 2556 break; 2557 } 2558 if (sc->sc_ifflags & IFF_DEBUG) 2559 printf("%s: port %s at index %d\n", 2560 sc->sc_ifname, lp_next->lp_ifp->if_xname, i); 2561 lb->lb_ports[i++] = lp_next; 2562 } 2563 2564 return (rv); 2565 } 2566 2567 static int 2568 lagg_lb_port_create(struct lagg_port *lp) 2569 { 2570 struct lagg_softc *sc = lp->lp_softc; 2571 return (lagg_lb_porttable(sc, NULL)); 2572 } 2573 2574 static void 2575 lagg_lb_port_destroy(struct lagg_port *lp) 2576 { 2577 struct lagg_softc *sc = lp->lp_softc; 2578 lagg_lb_porttable(sc, lp); 2579 } 2580 2581 static int 2582 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m) 2583 { 2584 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2585 struct lagg_port *lp = NULL; 2586 uint32_t p = 0; 2587 2588 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 2589 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 2590 p = m->m_pkthdr.flowid >> sc->flowid_shift; 2591 else 2592 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key); 2593 p %= sc->sc_count; 2594 lp = lb->lb_ports[p]; 2595 2596 /* 2597 * Check the port's link state. This will return the next active 2598 * port if the link is down or the port is NULL. 2599 */ 2600 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2601 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2602 m_freem(m); 2603 return (ENETDOWN); 2604 } 2605 2606 /* Send mbuf */ 2607 return (lagg_enqueue(lp->lp_ifp, m)); 2608 } 2609 2610 /* 2611 * 802.3ad LACP 2612 */ 2613 static void 2614 lagg_lacp_attach(struct lagg_softc *sc) 2615 { 2616 struct lagg_port *lp; 2617 2618 lacp_attach(sc); 2619 LAGG_XLOCK_ASSERT(sc); 2620 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2621 lacp_port_create(lp); 2622 } 2623 2624 static void 2625 lagg_lacp_detach(struct lagg_softc *sc) 2626 { 2627 struct lagg_port *lp; 2628 void *psc; 2629 2630 LAGG_XLOCK_ASSERT(sc); 2631 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2632 lacp_port_destroy(lp); 2633 2634 psc = sc->sc_psc; 2635 sc->sc_psc = NULL; 2636 lacp_detach(psc); 2637 } 2638 2639 static void 2640 lagg_lacp_lladdr(struct lagg_softc *sc) 2641 { 2642 struct lagg_port *lp; 2643 2644 LAGG_SXLOCK_ASSERT(sc); 2645 2646 /* purge all the lacp ports */ 2647 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2648 lacp_port_destroy(lp); 2649 2650 /* add them back in */ 2651 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2652 lacp_port_create(lp); 2653 } 2654 2655 static int 2656 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m) 2657 { 2658 struct lagg_port *lp; 2659 int err; 2660 2661 lp = lacp_select_tx_port(sc, m, &err); 2662 if (lp == NULL) { 2663 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2664 m_freem(m); 2665 return (err); 2666 } 2667 2668 /* Send mbuf */ 2669 return (lagg_enqueue(lp->lp_ifp, m)); 2670 } 2671 2672 static struct mbuf * 2673 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2674 { 2675 struct ifnet *ifp = sc->sc_ifp; 2676 struct ether_header *eh; 2677 u_short etype; 2678 2679 eh = mtod(m, struct ether_header *); 2680 etype = ntohs(eh->ether_type); 2681 2682 /* Tap off LACP control messages */ 2683 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) { 2684 m = lacp_input(lp, m); 2685 if (m == NULL) 2686 return (NULL); 2687 } 2688 2689 /* 2690 * If the port is not collecting or not in the active aggregator then 2691 * free and return. 2692 */ 2693 if (!lacp_iscollecting(lp) || !lacp_isactive(lp)) { 2694 m_freem(m); 2695 return (NULL); 2696 } 2697 2698 m->m_pkthdr.rcvif = ifp; 2699 return (m); 2700 } 2701 2702 /* Default input */ 2703 static struct mbuf * 2704 lagg_default_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2705 { 2706 struct ifnet *ifp = sc->sc_ifp; 2707 2708 /* Just pass in the packet to our lagg device */ 2709 m->m_pkthdr.rcvif = ifp; 2710 2711 return (m); 2712 } 2713