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_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, CTLFLAG_RWTUN, 280 &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, CTLFLAG_RWTUN, 287 &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, CTLFLAG_RWTUN, 294 &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_port2req(lp, rp); 1050 NET_EPOCH_EXIT(et); 1051 break; 1052 1053 case SIOCSIFCAP: 1054 case SIOCSIFCAPNV: 1055 if (lp->lp_ioctl == NULL) { 1056 error = EINVAL; 1057 break; 1058 } 1059 error = (*lp->lp_ioctl)(ifp, cmd, data); 1060 if (error) 1061 break; 1062 1063 /* Update lagg interface capabilities */ 1064 LAGG_XLOCK(sc); 1065 lagg_capabilities(sc); 1066 LAGG_XUNLOCK(sc); 1067 VLAN_CAPABILITIES(sc->sc_ifp); 1068 break; 1069 1070 case SIOCSIFMTU: 1071 /* Do not allow the MTU to be changed once joined */ 1072 error = EINVAL; 1073 break; 1074 1075 default: 1076 goto fallback; 1077 } 1078 1079 return (error); 1080 1081 fallback: 1082 if (lp != NULL && lp->lp_ioctl != NULL) 1083 return ((*lp->lp_ioctl)(ifp, cmd, data)); 1084 1085 return (EINVAL); 1086 } 1087 1088 /* 1089 * Requests counter @cnt data. 1090 * 1091 * Counter value is calculated the following way: 1092 * 1) for each port, sum difference between current and "initial" measurements. 1093 * 2) add lagg logical interface counters. 1094 * 3) add data from detached_counters array. 1095 * 1096 * We also do the following things on ports attach/detach: 1097 * 1) On port attach we store all counters it has into port_counter array. 1098 * 2) On port detach we add the different between "initial" and 1099 * current counters data to detached_counters array. 1100 */ 1101 static uint64_t 1102 lagg_get_counter(struct ifnet *ifp, ift_counter cnt) 1103 { 1104 struct epoch_tracker et; 1105 struct lagg_softc *sc; 1106 struct lagg_port *lp; 1107 struct ifnet *lpifp; 1108 uint64_t newval, oldval, vsum; 1109 1110 /* Revise this when we've got non-generic counters. */ 1111 KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt)); 1112 1113 sc = (struct lagg_softc *)ifp->if_softc; 1114 1115 vsum = 0; 1116 NET_EPOCH_ENTER(et); 1117 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1118 /* Saved attached value */ 1119 oldval = lp->port_counters.val[cnt]; 1120 /* current value */ 1121 lpifp = lp->lp_ifp; 1122 newval = lpifp->if_get_counter(lpifp, cnt); 1123 /* Calculate diff and save new */ 1124 vsum += newval - oldval; 1125 } 1126 NET_EPOCH_EXIT(et); 1127 1128 /* 1129 * Add counter data which might be added by upper 1130 * layer protocols operating on logical interface. 1131 */ 1132 vsum += if_get_counter_default(ifp, cnt); 1133 1134 /* 1135 * Add counter data from detached ports counters 1136 */ 1137 vsum += sc->detached_counters.val[cnt]; 1138 1139 return (vsum); 1140 } 1141 1142 /* 1143 * For direct output to child ports. 1144 */ 1145 static int 1146 lagg_port_output(struct ifnet *ifp, struct mbuf *m, 1147 const struct sockaddr *dst, struct route *ro) 1148 { 1149 struct lagg_port *lp = ifp->if_lagg; 1150 1151 switch (dst->sa_family) { 1152 case pseudo_AF_HDRCMPLT: 1153 case AF_UNSPEC: 1154 if (lp != NULL) 1155 return ((*lp->lp_output)(ifp, m, dst, ro)); 1156 } 1157 1158 /* drop any other frames */ 1159 m_freem(m); 1160 return (ENETDOWN); 1161 } 1162 1163 static void 1164 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp) 1165 { 1166 struct lagg_port *lp; 1167 struct lagg_softc *sc; 1168 1169 if ((lp = ifp->if_lagg) == NULL) 1170 return; 1171 /* If the ifnet is just being renamed, don't do anything. */ 1172 if (ifp->if_flags & IFF_RENAMING) 1173 return; 1174 1175 sc = lp->lp_softc; 1176 1177 LAGG_XLOCK(sc); 1178 lp->lp_detaching = 1; 1179 lagg_port_destroy(lp, 1); 1180 LAGG_XUNLOCK(sc); 1181 VLAN_CAPABILITIES(sc->sc_ifp); 1182 } 1183 1184 static void 1185 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp) 1186 { 1187 struct lagg_softc *sc = lp->lp_softc; 1188 1189 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname)); 1190 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname)); 1191 rp->rp_prio = lp->lp_prio; 1192 rp->rp_flags = lp->lp_flags; 1193 lagg_proto_portreq(sc, lp, &rp->rp_psc); 1194 1195 /* Add protocol specific flags */ 1196 switch (sc->sc_proto) { 1197 case LAGG_PROTO_FAILOVER: 1198 if (lp == sc->sc_primary) 1199 rp->rp_flags |= LAGG_PORT_MASTER; 1200 if (lp == lagg_link_active(sc, sc->sc_primary)) 1201 rp->rp_flags |= LAGG_PORT_ACTIVE; 1202 break; 1203 1204 case LAGG_PROTO_ROUNDROBIN: 1205 case LAGG_PROTO_LOADBALANCE: 1206 case LAGG_PROTO_BROADCAST: 1207 if (LAGG_PORTACTIVE(lp)) 1208 rp->rp_flags |= LAGG_PORT_ACTIVE; 1209 break; 1210 1211 case LAGG_PROTO_LACP: 1212 /* LACP has a different definition of active */ 1213 if (lacp_isactive(lp)) 1214 rp->rp_flags |= LAGG_PORT_ACTIVE; 1215 if (lacp_iscollecting(lp)) 1216 rp->rp_flags |= LAGG_PORT_COLLECTING; 1217 if (lacp_isdistributing(lp)) 1218 rp->rp_flags |= LAGG_PORT_DISTRIBUTING; 1219 break; 1220 } 1221 1222 } 1223 1224 static void 1225 lagg_watchdog_infiniband(void *arg) 1226 { 1227 struct epoch_tracker et; 1228 struct lagg_softc *sc; 1229 struct lagg_port *lp; 1230 struct ifnet *ifp; 1231 struct ifnet *lp_ifp; 1232 1233 sc = arg; 1234 1235 /* 1236 * Because infiniband nodes have a fixed MAC address, which is 1237 * generated by the so-called GID, we need to regularly update 1238 * the link level address of the parent lagg<N> device when 1239 * the active port changes. Possibly we could piggy-back on 1240 * link up/down events aswell, but using a timer also provides 1241 * a guarantee against too frequent events. This operation 1242 * does not have to be atomic. 1243 */ 1244 NET_EPOCH_ENTER(et); 1245 lp = lagg_link_active(sc, sc->sc_primary); 1246 if (lp != NULL) { 1247 ifp = sc->sc_ifp; 1248 lp_ifp = lp->lp_ifp; 1249 1250 if (ifp != NULL && lp_ifp != NULL && 1251 (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen) != 0 || 1252 memcmp(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen) != 0)) { 1253 memcpy(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen); 1254 memcpy(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen); 1255 1256 CURVNET_SET(ifp->if_vnet); 1257 EVENTHANDLER_INVOKE(iflladdr_event, ifp); 1258 CURVNET_RESTORE(); 1259 } 1260 } 1261 NET_EPOCH_EXIT(et); 1262 1263 callout_reset(&sc->sc_watchdog, hz, &lagg_watchdog_infiniband, arg); 1264 } 1265 1266 static void 1267 lagg_init(void *xsc) 1268 { 1269 struct lagg_softc *sc = (struct lagg_softc *)xsc; 1270 struct ifnet *ifp = sc->sc_ifp; 1271 struct lagg_port *lp; 1272 1273 LAGG_XLOCK(sc); 1274 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1275 LAGG_XUNLOCK(sc); 1276 return; 1277 } 1278 1279 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1280 1281 /* 1282 * Update the port lladdrs if needed. 1283 * This might be if_setlladdr() notification 1284 * that lladdr has been changed. 1285 */ 1286 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1287 if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp), 1288 ifp->if_addrlen) != 0) 1289 if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ifp->if_addrlen); 1290 } 1291 1292 lagg_proto_init(sc); 1293 1294 if (ifp->if_type == IFT_INFINIBAND) { 1295 mtx_lock(&sc->sc_mtx); 1296 lagg_watchdog_infiniband(sc); 1297 mtx_unlock(&sc->sc_mtx); 1298 } 1299 1300 LAGG_XUNLOCK(sc); 1301 } 1302 1303 static void 1304 lagg_stop(struct lagg_softc *sc) 1305 { 1306 struct ifnet *ifp = sc->sc_ifp; 1307 1308 LAGG_XLOCK_ASSERT(sc); 1309 1310 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1311 return; 1312 1313 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1314 1315 lagg_proto_stop(sc); 1316 1317 mtx_lock(&sc->sc_mtx); 1318 callout_stop(&sc->sc_watchdog); 1319 mtx_unlock(&sc->sc_mtx); 1320 1321 callout_drain(&sc->sc_watchdog); 1322 } 1323 1324 static int 1325 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1326 { 1327 struct epoch_tracker et; 1328 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 1329 struct lagg_reqall *ra = (struct lagg_reqall *)data; 1330 struct lagg_reqopts *ro = (struct lagg_reqopts *)data; 1331 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf; 1332 struct lagg_reqflags *rf = (struct lagg_reqflags *)data; 1333 struct ifreq *ifr = (struct ifreq *)data; 1334 struct lagg_port *lp; 1335 struct ifnet *tpif; 1336 struct thread *td = curthread; 1337 char *buf, *outbuf; 1338 int count, buflen, len, error = 0, oldmtu; 1339 1340 bzero(&rpbuf, sizeof(rpbuf)); 1341 1342 /* XXX: This can race with lagg_clone_destroy. */ 1343 1344 switch (cmd) { 1345 case SIOCGLAGG: 1346 LAGG_XLOCK(sc); 1347 buflen = sc->sc_count * sizeof(struct lagg_reqport); 1348 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO); 1349 ra->ra_proto = sc->sc_proto; 1350 lagg_proto_request(sc, &ra->ra_psc); 1351 count = 0; 1352 buf = outbuf; 1353 len = min(ra->ra_size, buflen); 1354 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1355 if (len < sizeof(rpbuf)) 1356 break; 1357 1358 lagg_port2req(lp, &rpbuf); 1359 memcpy(buf, &rpbuf, sizeof(rpbuf)); 1360 count++; 1361 buf += sizeof(rpbuf); 1362 len -= sizeof(rpbuf); 1363 } 1364 LAGG_XUNLOCK(sc); 1365 ra->ra_ports = count; 1366 ra->ra_size = count * sizeof(rpbuf); 1367 error = copyout(outbuf, ra->ra_port, ra->ra_size); 1368 free(outbuf, M_TEMP); 1369 break; 1370 case SIOCSLAGG: 1371 error = priv_check(td, PRIV_NET_LAGG); 1372 if (error) 1373 break; 1374 if (ra->ra_proto >= LAGG_PROTO_MAX) { 1375 error = EPROTONOSUPPORT; 1376 break; 1377 } 1378 /* Infiniband only supports the failover protocol. */ 1379 if (ra->ra_proto != LAGG_PROTO_FAILOVER && 1380 ifp->if_type == IFT_INFINIBAND) { 1381 error = EPROTONOSUPPORT; 1382 break; 1383 } 1384 LAGG_XLOCK(sc); 1385 lagg_proto_detach(sc); 1386 lagg_proto_attach(sc, ra->ra_proto); 1387 LAGG_XUNLOCK(sc); 1388 break; 1389 case SIOCGLAGGOPTS: 1390 LAGG_XLOCK(sc); 1391 ro->ro_opts = sc->sc_opts; 1392 if (sc->sc_proto == LAGG_PROTO_LACP) { 1393 struct lacp_softc *lsc; 1394 1395 lsc = (struct lacp_softc *)sc->sc_psc; 1396 if (lsc->lsc_debug.lsc_tx_test != 0) 1397 ro->ro_opts |= LAGG_OPT_LACP_TXTEST; 1398 if (lsc->lsc_debug.lsc_rx_test != 0) 1399 ro->ro_opts |= LAGG_OPT_LACP_RXTEST; 1400 if (lsc->lsc_strict_mode != 0) 1401 ro->ro_opts |= LAGG_OPT_LACP_STRICT; 1402 if (lsc->lsc_fast_timeout != 0) 1403 ro->ro_opts |= LAGG_OPT_LACP_FAST_TIMO; 1404 1405 ro->ro_active = sc->sc_active; 1406 } else { 1407 ro->ro_active = 0; 1408 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 1409 ro->ro_active += LAGG_PORTACTIVE(lp); 1410 } 1411 ro->ro_bkt = sc->sc_stride; 1412 ro->ro_flapping = sc->sc_flapping; 1413 ro->ro_flowid_shift = sc->flowid_shift; 1414 LAGG_XUNLOCK(sc); 1415 break; 1416 case SIOCSLAGGOPTS: 1417 error = priv_check(td, PRIV_NET_LAGG); 1418 if (error) 1419 break; 1420 1421 /* 1422 * The stride option was added without defining a corresponding 1423 * LAGG_OPT flag, so handle a non-zero value before checking 1424 * anything else to preserve compatibility. 1425 */ 1426 LAGG_XLOCK(sc); 1427 if (ro->ro_opts == 0 && ro->ro_bkt != 0) { 1428 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN) { 1429 LAGG_XUNLOCK(sc); 1430 error = EINVAL; 1431 break; 1432 } 1433 sc->sc_stride = ro->ro_bkt; 1434 } 1435 if (ro->ro_opts == 0) { 1436 LAGG_XUNLOCK(sc); 1437 break; 1438 } 1439 1440 /* 1441 * Set options. LACP options are stored in sc->sc_psc, 1442 * not in sc_opts. 1443 */ 1444 int valid, lacp; 1445 1446 switch (ro->ro_opts) { 1447 case LAGG_OPT_USE_FLOWID: 1448 case -LAGG_OPT_USE_FLOWID: 1449 case LAGG_OPT_USE_NUMA: 1450 case -LAGG_OPT_USE_NUMA: 1451 case LAGG_OPT_FLOWIDSHIFT: 1452 case LAGG_OPT_RR_LIMIT: 1453 valid = 1; 1454 lacp = 0; 1455 break; 1456 case LAGG_OPT_LACP_TXTEST: 1457 case -LAGG_OPT_LACP_TXTEST: 1458 case LAGG_OPT_LACP_RXTEST: 1459 case -LAGG_OPT_LACP_RXTEST: 1460 case LAGG_OPT_LACP_STRICT: 1461 case -LAGG_OPT_LACP_STRICT: 1462 case LAGG_OPT_LACP_FAST_TIMO: 1463 case -LAGG_OPT_LACP_FAST_TIMO: 1464 valid = lacp = 1; 1465 break; 1466 default: 1467 valid = lacp = 0; 1468 break; 1469 } 1470 1471 if (valid == 0 || 1472 (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) { 1473 /* Invalid combination of options specified. */ 1474 error = EINVAL; 1475 LAGG_XUNLOCK(sc); 1476 break; /* Return from SIOCSLAGGOPTS. */ 1477 } 1478 1479 /* 1480 * Store new options into sc->sc_opts except for 1481 * FLOWIDSHIFT, RR and LACP options. 1482 */ 1483 if (lacp == 0) { 1484 if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT) 1485 sc->flowid_shift = ro->ro_flowid_shift; 1486 else if (ro->ro_opts == LAGG_OPT_RR_LIMIT) { 1487 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN || 1488 ro->ro_bkt == 0) { 1489 error = EINVAL; 1490 LAGG_XUNLOCK(sc); 1491 break; 1492 } 1493 sc->sc_stride = ro->ro_bkt; 1494 } else if (ro->ro_opts > 0) 1495 sc->sc_opts |= ro->ro_opts; 1496 else 1497 sc->sc_opts &= ~ro->ro_opts; 1498 } else { 1499 struct lacp_softc *lsc; 1500 struct lacp_port *lp; 1501 1502 lsc = (struct lacp_softc *)sc->sc_psc; 1503 1504 switch (ro->ro_opts) { 1505 case LAGG_OPT_LACP_TXTEST: 1506 lsc->lsc_debug.lsc_tx_test = 1; 1507 break; 1508 case -LAGG_OPT_LACP_TXTEST: 1509 lsc->lsc_debug.lsc_tx_test = 0; 1510 break; 1511 case LAGG_OPT_LACP_RXTEST: 1512 lsc->lsc_debug.lsc_rx_test = 1; 1513 break; 1514 case -LAGG_OPT_LACP_RXTEST: 1515 lsc->lsc_debug.lsc_rx_test = 0; 1516 break; 1517 case LAGG_OPT_LACP_STRICT: 1518 lsc->lsc_strict_mode = 1; 1519 break; 1520 case -LAGG_OPT_LACP_STRICT: 1521 lsc->lsc_strict_mode = 0; 1522 break; 1523 case LAGG_OPT_LACP_FAST_TIMO: 1524 LACP_LOCK(lsc); 1525 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) 1526 lp->lp_state |= LACP_STATE_TIMEOUT; 1527 LACP_UNLOCK(lsc); 1528 lsc->lsc_fast_timeout = 1; 1529 break; 1530 case -LAGG_OPT_LACP_FAST_TIMO: 1531 LACP_LOCK(lsc); 1532 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) 1533 lp->lp_state &= ~LACP_STATE_TIMEOUT; 1534 LACP_UNLOCK(lsc); 1535 lsc->lsc_fast_timeout = 0; 1536 break; 1537 } 1538 } 1539 LAGG_XUNLOCK(sc); 1540 break; 1541 case SIOCGLAGGFLAGS: 1542 rf->rf_flags = 0; 1543 LAGG_XLOCK(sc); 1544 if (sc->sc_flags & MBUF_HASHFLAG_L2) 1545 rf->rf_flags |= LAGG_F_HASHL2; 1546 if (sc->sc_flags & MBUF_HASHFLAG_L3) 1547 rf->rf_flags |= LAGG_F_HASHL3; 1548 if (sc->sc_flags & MBUF_HASHFLAG_L4) 1549 rf->rf_flags |= LAGG_F_HASHL4; 1550 LAGG_XUNLOCK(sc); 1551 break; 1552 case SIOCSLAGGHASH: 1553 error = priv_check(td, PRIV_NET_LAGG); 1554 if (error) 1555 break; 1556 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) { 1557 error = EINVAL; 1558 break; 1559 } 1560 LAGG_XLOCK(sc); 1561 sc->sc_flags = 0; 1562 if (rf->rf_flags & LAGG_F_HASHL2) 1563 sc->sc_flags |= MBUF_HASHFLAG_L2; 1564 if (rf->rf_flags & LAGG_F_HASHL3) 1565 sc->sc_flags |= MBUF_HASHFLAG_L3; 1566 if (rf->rf_flags & LAGG_F_HASHL4) 1567 sc->sc_flags |= MBUF_HASHFLAG_L4; 1568 LAGG_XUNLOCK(sc); 1569 break; 1570 case SIOCGLAGGPORT: 1571 if (rp->rp_portname[0] == '\0' || 1572 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1573 error = EINVAL; 1574 break; 1575 } 1576 1577 NET_EPOCH_ENTER(et); 1578 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || 1579 lp->lp_softc != sc) { 1580 error = ENOENT; 1581 NET_EPOCH_EXIT(et); 1582 if_rele(tpif); 1583 break; 1584 } 1585 1586 lagg_port2req(lp, rp); 1587 NET_EPOCH_EXIT(et); 1588 if_rele(tpif); 1589 break; 1590 case SIOCSLAGGPORT: 1591 error = priv_check(td, PRIV_NET_LAGG); 1592 if (error) 1593 break; 1594 if (rp->rp_portname[0] == '\0' || 1595 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1596 error = EINVAL; 1597 break; 1598 } 1599 #ifdef INET6 1600 /* 1601 * A laggport interface should not have inet6 address 1602 * because two interfaces with a valid link-local 1603 * scope zone must not be merged in any form. This 1604 * restriction is needed to prevent violation of 1605 * link-local scope zone. Attempts to add a laggport 1606 * interface which has inet6 addresses triggers 1607 * removal of all inet6 addresses on the member 1608 * interface. 1609 */ 1610 if (in6ifa_llaonifp(tpif)) { 1611 in6_ifdetach(tpif); 1612 if_printf(sc->sc_ifp, 1613 "IPv6 addresses on %s have been removed " 1614 "before adding it as a member to prevent " 1615 "IPv6 address scope violation.\n", 1616 tpif->if_xname); 1617 } 1618 #endif 1619 oldmtu = ifp->if_mtu; 1620 LAGG_XLOCK(sc); 1621 error = lagg_port_create(sc, tpif); 1622 LAGG_XUNLOCK(sc); 1623 if_rele(tpif); 1624 1625 /* 1626 * LAGG MTU may change during addition of the first port. 1627 * If it did, do network layer specific procedure. 1628 */ 1629 if (ifp->if_mtu != oldmtu) 1630 if_notifymtu(ifp); 1631 1632 VLAN_CAPABILITIES(ifp); 1633 break; 1634 case SIOCSLAGGDELPORT: 1635 error = priv_check(td, PRIV_NET_LAGG); 1636 if (error) 1637 break; 1638 if (rp->rp_portname[0] == '\0' || 1639 (tpif = ifunit_ref(rp->rp_portname)) == NULL) { 1640 error = EINVAL; 1641 break; 1642 } 1643 1644 LAGG_XLOCK(sc); 1645 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || 1646 lp->lp_softc != sc) { 1647 error = ENOENT; 1648 LAGG_XUNLOCK(sc); 1649 if_rele(tpif); 1650 break; 1651 } 1652 1653 error = lagg_port_destroy(lp, 1); 1654 LAGG_XUNLOCK(sc); 1655 if_rele(tpif); 1656 VLAN_CAPABILITIES(ifp); 1657 break; 1658 case SIOCSIFFLAGS: 1659 /* Set flags on ports too */ 1660 LAGG_XLOCK(sc); 1661 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1662 lagg_setflags(lp, 1); 1663 } 1664 1665 if (!(ifp->if_flags & IFF_UP) && 1666 (ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1667 /* 1668 * If interface is marked down and it is running, 1669 * then stop and disable it. 1670 */ 1671 lagg_stop(sc); 1672 LAGG_XUNLOCK(sc); 1673 } else if ((ifp->if_flags & IFF_UP) && 1674 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1675 /* 1676 * If interface is marked up and it is stopped, then 1677 * start it. 1678 */ 1679 LAGG_XUNLOCK(sc); 1680 (*ifp->if_init)(sc); 1681 } else 1682 LAGG_XUNLOCK(sc); 1683 break; 1684 case SIOCADDMULTI: 1685 case SIOCDELMULTI: 1686 LAGG_XLOCK(sc); 1687 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1688 lagg_clrmulti(lp); 1689 lagg_setmulti(lp); 1690 } 1691 LAGG_XUNLOCK(sc); 1692 error = 0; 1693 break; 1694 case SIOCSIFMEDIA: 1695 case SIOCGIFMEDIA: 1696 if (ifp->if_type == IFT_INFINIBAND) 1697 error = EINVAL; 1698 else 1699 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1700 break; 1701 1702 case SIOCSIFCAP: 1703 case SIOCSIFCAPNV: 1704 LAGG_XLOCK(sc); 1705 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1706 if (lp->lp_ioctl != NULL) 1707 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1708 } 1709 lagg_capabilities(sc); 1710 LAGG_XUNLOCK(sc); 1711 VLAN_CAPABILITIES(ifp); 1712 error = 0; 1713 break; 1714 1715 case SIOCGIFCAPNV: 1716 error = 0; 1717 break; 1718 1719 case SIOCSIFMTU: 1720 LAGG_XLOCK(sc); 1721 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1722 if (lp->lp_ioctl != NULL) 1723 error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1724 else 1725 error = EINVAL; 1726 if (error != 0) { 1727 if_printf(ifp, 1728 "failed to change MTU to %d on port %s, " 1729 "reverting all ports to original MTU (%d)\n", 1730 ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu); 1731 break; 1732 } 1733 } 1734 if (error == 0) { 1735 ifp->if_mtu = ifr->ifr_mtu; 1736 } else { 1737 /* set every port back to the original MTU */ 1738 ifr->ifr_mtu = ifp->if_mtu; 1739 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 1740 if (lp->lp_ioctl != NULL) 1741 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data); 1742 } 1743 } 1744 lagg_capabilities(sc); 1745 LAGG_XUNLOCK(sc); 1746 VLAN_CAPABILITIES(ifp); 1747 break; 1748 1749 default: 1750 error = ether_ioctl(ifp, cmd, data); 1751 break; 1752 } 1753 return (error); 1754 } 1755 1756 #if defined(KERN_TLS) || defined(RATELIMIT) 1757 #ifdef RATELIMIT 1758 static const struct if_snd_tag_sw lagg_snd_tag_ul_sw = { 1759 .snd_tag_modify = lagg_snd_tag_modify, 1760 .snd_tag_query = lagg_snd_tag_query, 1761 .snd_tag_free = lagg_snd_tag_free, 1762 .next_snd_tag = lagg_next_snd_tag, 1763 .type = IF_SND_TAG_TYPE_UNLIMITED 1764 }; 1765 1766 static const struct if_snd_tag_sw lagg_snd_tag_rl_sw = { 1767 .snd_tag_modify = lagg_snd_tag_modify, 1768 .snd_tag_query = lagg_snd_tag_query, 1769 .snd_tag_free = lagg_snd_tag_free, 1770 .next_snd_tag = lagg_next_snd_tag, 1771 .type = IF_SND_TAG_TYPE_RATE_LIMIT 1772 }; 1773 #endif 1774 1775 #ifdef KERN_TLS 1776 static const struct if_snd_tag_sw lagg_snd_tag_tls_sw = { 1777 .snd_tag_modify = lagg_snd_tag_modify, 1778 .snd_tag_query = lagg_snd_tag_query, 1779 .snd_tag_free = lagg_snd_tag_free, 1780 .next_snd_tag = lagg_next_snd_tag, 1781 .type = IF_SND_TAG_TYPE_TLS 1782 }; 1783 1784 #ifdef RATELIMIT 1785 static const struct if_snd_tag_sw lagg_snd_tag_tls_rl_sw = { 1786 .snd_tag_modify = lagg_snd_tag_modify, 1787 .snd_tag_query = lagg_snd_tag_query, 1788 .snd_tag_free = lagg_snd_tag_free, 1789 .next_snd_tag = lagg_next_snd_tag, 1790 .type = IF_SND_TAG_TYPE_TLS_RATE_LIMIT 1791 }; 1792 #endif 1793 #endif 1794 1795 static inline struct lagg_snd_tag * 1796 mst_to_lst(struct m_snd_tag *mst) 1797 { 1798 1799 return (__containerof(mst, struct lagg_snd_tag, com)); 1800 } 1801 1802 /* 1803 * Look up the port used by a specific flow. This only works for lagg 1804 * protocols with deterministic port mappings (e.g. not roundrobin). 1805 * In addition protocols which use a hash to map flows to ports must 1806 * be configured to use the mbuf flowid rather than hashing packet 1807 * contents. 1808 */ 1809 static struct lagg_port * 1810 lookup_snd_tag_port(struct ifnet *ifp, uint32_t flowid, uint32_t flowtype, 1811 uint8_t numa_domain) 1812 { 1813 struct lagg_softc *sc; 1814 struct lagg_port *lp; 1815 struct lagg_lb *lb; 1816 uint32_t hash, p; 1817 int err; 1818 1819 sc = ifp->if_softc; 1820 1821 switch (sc->sc_proto) { 1822 case LAGG_PROTO_FAILOVER: 1823 return (lagg_link_active(sc, sc->sc_primary)); 1824 case LAGG_PROTO_LOADBALANCE: 1825 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1826 flowtype == M_HASHTYPE_NONE) 1827 return (NULL); 1828 p = flowid >> sc->flowid_shift; 1829 p %= sc->sc_count; 1830 lb = (struct lagg_lb *)sc->sc_psc; 1831 lp = lb->lb_ports[p]; 1832 return (lagg_link_active(sc, lp)); 1833 case LAGG_PROTO_LACP: 1834 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 || 1835 flowtype == M_HASHTYPE_NONE) 1836 return (NULL); 1837 hash = flowid >> sc->flowid_shift; 1838 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, &err)); 1839 default: 1840 return (NULL); 1841 } 1842 } 1843 1844 static int 1845 lagg_snd_tag_alloc(struct ifnet *ifp, 1846 union if_snd_tag_alloc_params *params, 1847 struct m_snd_tag **ppmt) 1848 { 1849 struct epoch_tracker et; 1850 const struct if_snd_tag_sw *sw; 1851 struct lagg_snd_tag *lst; 1852 struct lagg_port *lp; 1853 struct ifnet *lp_ifp; 1854 struct m_snd_tag *mst; 1855 int error; 1856 1857 switch (params->hdr.type) { 1858 #ifdef RATELIMIT 1859 case IF_SND_TAG_TYPE_UNLIMITED: 1860 sw = &lagg_snd_tag_ul_sw; 1861 break; 1862 case IF_SND_TAG_TYPE_RATE_LIMIT: 1863 sw = &lagg_snd_tag_rl_sw; 1864 break; 1865 #endif 1866 #ifdef KERN_TLS 1867 case IF_SND_TAG_TYPE_TLS: 1868 sw = &lagg_snd_tag_tls_sw; 1869 break; 1870 case IF_SND_TAG_TYPE_TLS_RX: 1871 /* Return tag from port interface directly. */ 1872 sw = NULL; 1873 break; 1874 #ifdef RATELIMIT 1875 case IF_SND_TAG_TYPE_TLS_RATE_LIMIT: 1876 sw = &lagg_snd_tag_tls_rl_sw; 1877 break; 1878 #endif 1879 #endif 1880 default: 1881 return (EOPNOTSUPP); 1882 } 1883 1884 NET_EPOCH_ENTER(et); 1885 lp = lookup_snd_tag_port(ifp, params->hdr.flowid, 1886 params->hdr.flowtype, params->hdr.numa_domain); 1887 if (lp == NULL) { 1888 NET_EPOCH_EXIT(et); 1889 return (EOPNOTSUPP); 1890 } 1891 if (lp->lp_ifp == NULL) { 1892 NET_EPOCH_EXIT(et); 1893 return (EOPNOTSUPP); 1894 } 1895 lp_ifp = lp->lp_ifp; 1896 if_ref(lp_ifp); 1897 NET_EPOCH_EXIT(et); 1898 1899 if (sw != NULL) { 1900 lst = malloc(sizeof(*lst), M_LAGG, M_NOWAIT); 1901 if (lst == NULL) { 1902 if_rele(lp_ifp); 1903 return (ENOMEM); 1904 } 1905 } else 1906 lst = NULL; 1907 1908 error = m_snd_tag_alloc(lp_ifp, params, &mst); 1909 if_rele(lp_ifp); 1910 if (error) { 1911 free(lst, M_LAGG); 1912 return (error); 1913 } 1914 1915 if (sw != NULL) { 1916 m_snd_tag_init(&lst->com, ifp, sw); 1917 lst->tag = mst; 1918 1919 *ppmt = &lst->com; 1920 } else 1921 *ppmt = mst; 1922 1923 return (0); 1924 } 1925 1926 static struct m_snd_tag * 1927 lagg_next_snd_tag(struct m_snd_tag *mst) 1928 { 1929 struct lagg_snd_tag *lst; 1930 1931 lst = mst_to_lst(mst); 1932 return (lst->tag); 1933 } 1934 1935 static int 1936 lagg_snd_tag_modify(struct m_snd_tag *mst, 1937 union if_snd_tag_modify_params *params) 1938 { 1939 struct lagg_snd_tag *lst; 1940 1941 lst = mst_to_lst(mst); 1942 return (lst->tag->sw->snd_tag_modify(lst->tag, params)); 1943 } 1944 1945 static int 1946 lagg_snd_tag_query(struct m_snd_tag *mst, 1947 union if_snd_tag_query_params *params) 1948 { 1949 struct lagg_snd_tag *lst; 1950 1951 lst = mst_to_lst(mst); 1952 return (lst->tag->sw->snd_tag_query(lst->tag, params)); 1953 } 1954 1955 static void 1956 lagg_snd_tag_free(struct m_snd_tag *mst) 1957 { 1958 struct lagg_snd_tag *lst; 1959 1960 lst = mst_to_lst(mst); 1961 m_snd_tag_rele(lst->tag); 1962 free(lst, M_LAGG); 1963 } 1964 1965 static void 1966 lagg_ratelimit_query(struct ifnet *ifp __unused, struct if_ratelimit_query_results *q) 1967 { 1968 /* 1969 * For lagg, we have an indirect 1970 * interface. The caller needs to 1971 * get a ratelimit tag on the actual 1972 * interface the flow will go on. 1973 */ 1974 q->rate_table = NULL; 1975 q->flags = RT_IS_INDIRECT; 1976 q->max_flows = 0; 1977 q->number_of_rates = 0; 1978 } 1979 #endif 1980 1981 static int 1982 lagg_setmulti(struct lagg_port *lp) 1983 { 1984 struct lagg_softc *sc = lp->lp_softc; 1985 struct ifnet *ifp = lp->lp_ifp; 1986 struct ifnet *scifp = sc->sc_ifp; 1987 struct lagg_mc *mc; 1988 struct ifmultiaddr *ifma; 1989 int error; 1990 1991 IF_ADDR_WLOCK(scifp); 1992 CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) { 1993 if (ifma->ifma_addr->sa_family != AF_LINK) 1994 continue; 1995 mc = malloc(sizeof(struct lagg_mc), M_LAGG, M_NOWAIT); 1996 if (mc == NULL) { 1997 IF_ADDR_WUNLOCK(scifp); 1998 return (ENOMEM); 1999 } 2000 bcopy(ifma->ifma_addr, &mc->mc_addr, ifma->ifma_addr->sa_len); 2001 mc->mc_addr.sdl_index = ifp->if_index; 2002 mc->mc_ifma = NULL; 2003 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries); 2004 } 2005 IF_ADDR_WUNLOCK(scifp); 2006 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) { 2007 error = if_addmulti(ifp, 2008 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma); 2009 if (error) 2010 return (error); 2011 } 2012 return (0); 2013 } 2014 2015 static int 2016 lagg_clrmulti(struct lagg_port *lp) 2017 { 2018 struct lagg_mc *mc; 2019 2020 LAGG_XLOCK_ASSERT(lp->lp_softc); 2021 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) { 2022 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries); 2023 if (mc->mc_ifma && lp->lp_detaching == 0) 2024 if_delmulti_ifma(mc->mc_ifma); 2025 free(mc, M_LAGG); 2026 } 2027 return (0); 2028 } 2029 2030 static void 2031 lagg_setcaps(struct lagg_port *lp, int cap, int cap2) 2032 { 2033 struct ifreq ifr; 2034 struct siocsifcapnv_driver_data drv_ioctl_data; 2035 2036 if (lp->lp_ifp->if_capenable == cap && 2037 lp->lp_ifp->if_capenable2 == cap2) 2038 return; 2039 if (lp->lp_ioctl == NULL) 2040 return; 2041 /* XXX */ 2042 if ((lp->lp_ifp->if_capabilities & IFCAP_NV) != 0) { 2043 drv_ioctl_data.reqcap = cap; 2044 drv_ioctl_data.reqcap2 = cap2; 2045 drv_ioctl_data.nvcap = NULL; 2046 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAPNV, 2047 (caddr_t)&drv_ioctl_data); 2048 } else { 2049 ifr.ifr_reqcap = cap; 2050 (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr); 2051 } 2052 } 2053 2054 /* Handle a ref counted flag that should be set on the lagg port as well */ 2055 static int 2056 lagg_setflag(struct lagg_port *lp, int flag, int status, 2057 int (*func)(struct ifnet *, int)) 2058 { 2059 struct lagg_softc *sc = lp->lp_softc; 2060 struct ifnet *scifp = sc->sc_ifp; 2061 struct ifnet *ifp = lp->lp_ifp; 2062 int error; 2063 2064 LAGG_XLOCK_ASSERT(sc); 2065 2066 status = status ? (scifp->if_flags & flag) : 0; 2067 /* Now "status" contains the flag value or 0 */ 2068 2069 /* 2070 * See if recorded ports status is different from what 2071 * we want it to be. If it is, flip it. We record ports 2072 * status in lp_ifflags so that we won't clear ports flag 2073 * we haven't set. In fact, we don't clear or set ports 2074 * flags directly, but get or release references to them. 2075 * That's why we can be sure that recorded flags still are 2076 * in accord with actual ports flags. 2077 */ 2078 if (status != (lp->lp_ifflags & flag)) { 2079 error = (*func)(ifp, status); 2080 if (error) 2081 return (error); 2082 lp->lp_ifflags &= ~flag; 2083 lp->lp_ifflags |= status; 2084 } 2085 return (0); 2086 } 2087 2088 /* 2089 * Handle IFF_* flags that require certain changes on the lagg port 2090 * if "status" is true, update ports flags respective to the lagg 2091 * if "status" is false, forcedly clear the flags set on port. 2092 */ 2093 static int 2094 lagg_setflags(struct lagg_port *lp, int status) 2095 { 2096 int error, i; 2097 2098 for (i = 0; lagg_pflags[i].flag; i++) { 2099 error = lagg_setflag(lp, lagg_pflags[i].flag, 2100 status, lagg_pflags[i].func); 2101 if (error) 2102 return (error); 2103 } 2104 return (0); 2105 } 2106 2107 static int 2108 lagg_transmit_ethernet(struct ifnet *ifp, struct mbuf *m) 2109 { 2110 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2111 2112 NET_EPOCH_ASSERT(); 2113 #if defined(KERN_TLS) || defined(RATELIMIT) 2114 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) 2115 MPASS(m->m_pkthdr.snd_tag->ifp == ifp); 2116 #endif 2117 /* We need a Tx algorithm and at least one port */ 2118 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2119 m_freem(m); 2120 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2121 return (ENXIO); 2122 } 2123 2124 ETHER_BPF_MTAP(ifp, m); 2125 2126 return (lagg_proto_start(sc, m)); 2127 } 2128 2129 static int 2130 lagg_transmit_infiniband(struct ifnet *ifp, struct mbuf *m) 2131 { 2132 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2133 2134 NET_EPOCH_ASSERT(); 2135 #if defined(KERN_TLS) || defined(RATELIMIT) 2136 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) 2137 MPASS(m->m_pkthdr.snd_tag->ifp == ifp); 2138 #endif 2139 /* We need a Tx algorithm and at least one port */ 2140 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { 2141 m_freem(m); 2142 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2143 return (ENXIO); 2144 } 2145 2146 infiniband_bpf_mtap(ifp, m); 2147 2148 return (lagg_proto_start(sc, m)); 2149 } 2150 2151 /* 2152 * The ifp->if_qflush entry point for lagg(4) is no-op. 2153 */ 2154 static void 2155 lagg_qflush(struct ifnet *ifp __unused) 2156 { 2157 } 2158 2159 static struct mbuf * 2160 lagg_input_ethernet(struct ifnet *ifp, struct mbuf *m) 2161 { 2162 struct lagg_port *lp = ifp->if_lagg; 2163 struct lagg_softc *sc = lp->lp_softc; 2164 struct ifnet *scifp = sc->sc_ifp; 2165 2166 NET_EPOCH_ASSERT(); 2167 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2168 lp->lp_detaching != 0 || 2169 sc->sc_proto == LAGG_PROTO_NONE) { 2170 m_freem(m); 2171 return (NULL); 2172 } 2173 2174 m = lagg_proto_input(sc, lp, m); 2175 if (m != NULL) { 2176 ETHER_BPF_MTAP(scifp, m); 2177 2178 if ((scifp->if_flags & IFF_MONITOR) != 0) { 2179 m_freem(m); 2180 m = NULL; 2181 } 2182 } 2183 2184 #ifdef DEV_NETMAP 2185 if (m != NULL && scifp->if_capenable & IFCAP_NETMAP) { 2186 scifp->if_input(scifp, m); 2187 m = NULL; 2188 } 2189 #endif /* DEV_NETMAP */ 2190 2191 return (m); 2192 } 2193 2194 static struct mbuf * 2195 lagg_input_infiniband(struct ifnet *ifp, struct mbuf *m) 2196 { 2197 struct lagg_port *lp = ifp->if_lagg; 2198 struct lagg_softc *sc = lp->lp_softc; 2199 struct ifnet *scifp = sc->sc_ifp; 2200 2201 NET_EPOCH_ASSERT(); 2202 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2203 lp->lp_detaching != 0 || 2204 sc->sc_proto == LAGG_PROTO_NONE) { 2205 m_freem(m); 2206 return (NULL); 2207 } 2208 2209 m = lagg_proto_input(sc, lp, m); 2210 if (m != NULL) { 2211 infiniband_bpf_mtap(scifp, m); 2212 2213 if ((scifp->if_flags & IFF_MONITOR) != 0) { 2214 m_freem(m); 2215 m = NULL; 2216 } 2217 } 2218 2219 return (m); 2220 } 2221 2222 static int 2223 lagg_media_change(struct ifnet *ifp) 2224 { 2225 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2226 2227 if (sc->sc_ifflags & IFF_DEBUG) 2228 printf("%s\n", __func__); 2229 2230 /* Ignore */ 2231 return (0); 2232 } 2233 2234 static void 2235 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr) 2236 { 2237 struct epoch_tracker et; 2238 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; 2239 struct lagg_port *lp; 2240 2241 imr->ifm_status = IFM_AVALID; 2242 imr->ifm_active = IFM_ETHER | IFM_AUTO; 2243 2244 NET_EPOCH_ENTER(et); 2245 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2246 if (LAGG_PORTACTIVE(lp)) 2247 imr->ifm_status |= IFM_ACTIVE; 2248 } 2249 NET_EPOCH_EXIT(et); 2250 } 2251 2252 static void 2253 lagg_linkstate(struct lagg_softc *sc) 2254 { 2255 struct epoch_tracker et; 2256 struct lagg_port *lp; 2257 int new_link = LINK_STATE_DOWN; 2258 uint64_t speed; 2259 2260 LAGG_XLOCK_ASSERT(sc); 2261 2262 /* LACP handles link state itself */ 2263 if (sc->sc_proto == LAGG_PROTO_LACP) 2264 return; 2265 2266 /* Our link is considered up if at least one of our ports is active */ 2267 NET_EPOCH_ENTER(et); 2268 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2269 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) { 2270 new_link = LINK_STATE_UP; 2271 break; 2272 } 2273 } 2274 NET_EPOCH_EXIT(et); 2275 if_link_state_change(sc->sc_ifp, new_link); 2276 2277 /* Update if_baudrate to reflect the max possible speed */ 2278 switch (sc->sc_proto) { 2279 case LAGG_PROTO_FAILOVER: 2280 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ? 2281 sc->sc_primary->lp_ifp->if_baudrate : 0; 2282 break; 2283 case LAGG_PROTO_ROUNDROBIN: 2284 case LAGG_PROTO_LOADBALANCE: 2285 case LAGG_PROTO_BROADCAST: 2286 speed = 0; 2287 NET_EPOCH_ENTER(et); 2288 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2289 speed += lp->lp_ifp->if_baudrate; 2290 NET_EPOCH_EXIT(et); 2291 sc->sc_ifp->if_baudrate = speed; 2292 break; 2293 case LAGG_PROTO_LACP: 2294 /* LACP updates if_baudrate itself */ 2295 break; 2296 } 2297 } 2298 2299 static void 2300 lagg_port_state(struct ifnet *ifp, int state) 2301 { 2302 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg; 2303 struct lagg_softc *sc = NULL; 2304 2305 if (lp != NULL) 2306 sc = lp->lp_softc; 2307 if (sc == NULL) 2308 return; 2309 2310 LAGG_XLOCK(sc); 2311 lagg_linkstate(sc); 2312 lagg_proto_linkstate(sc, lp); 2313 LAGG_XUNLOCK(sc); 2314 } 2315 2316 struct lagg_port * 2317 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp) 2318 { 2319 struct lagg_port *lp_next, *rval = NULL; 2320 2321 /* 2322 * Search a port which reports an active link state. 2323 */ 2324 2325 #ifdef INVARIANTS 2326 /* 2327 * This is called with either in the network epoch 2328 * or with LAGG_XLOCK(sc) held. 2329 */ 2330 if (!in_epoch(net_epoch_preempt)) 2331 LAGG_XLOCK_ASSERT(sc); 2332 #endif 2333 2334 if (lp == NULL) 2335 goto search; 2336 if (LAGG_PORTACTIVE(lp)) { 2337 rval = lp; 2338 goto found; 2339 } 2340 if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL && 2341 LAGG_PORTACTIVE(lp_next)) { 2342 rval = lp_next; 2343 goto found; 2344 } 2345 2346 search: 2347 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2348 if (LAGG_PORTACTIVE(lp_next)) { 2349 return (lp_next); 2350 } 2351 } 2352 found: 2353 return (rval); 2354 } 2355 2356 int 2357 lagg_enqueue(struct ifnet *ifp, struct mbuf *m) 2358 { 2359 2360 #if defined(KERN_TLS) || defined(RATELIMIT) 2361 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) { 2362 struct lagg_snd_tag *lst; 2363 struct m_snd_tag *mst; 2364 2365 mst = m->m_pkthdr.snd_tag; 2366 lst = mst_to_lst(mst); 2367 if (lst->tag->ifp != ifp) { 2368 m_freem(m); 2369 return (EAGAIN); 2370 } 2371 m->m_pkthdr.snd_tag = m_snd_tag_ref(lst->tag); 2372 m_snd_tag_rele(mst); 2373 } 2374 #endif 2375 return (ifp->if_transmit)(ifp, m); 2376 } 2377 2378 /* 2379 * Simple round robin aggregation 2380 */ 2381 static void 2382 lagg_rr_attach(struct lagg_softc *sc) 2383 { 2384 sc->sc_seq = 0; 2385 sc->sc_stride = 1; 2386 } 2387 2388 static int 2389 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m) 2390 { 2391 struct lagg_port *lp; 2392 uint32_t p; 2393 2394 p = atomic_fetchadd_32(&sc->sc_seq, 1); 2395 p /= sc->sc_stride; 2396 p %= sc->sc_count; 2397 lp = CK_SLIST_FIRST(&sc->sc_ports); 2398 2399 while (p--) 2400 lp = CK_SLIST_NEXT(lp, lp_entries); 2401 2402 /* 2403 * Check the port's link state. This will return the next active 2404 * port if the link is down or the port is NULL. 2405 */ 2406 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2407 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2408 m_freem(m); 2409 return (ENETDOWN); 2410 } 2411 2412 /* Send mbuf */ 2413 return (lagg_enqueue(lp->lp_ifp, m)); 2414 } 2415 2416 /* 2417 * Broadcast mode 2418 */ 2419 static int 2420 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m) 2421 { 2422 int errors = 0; 2423 int ret; 2424 struct lagg_port *lp, *last = NULL; 2425 struct mbuf *m0; 2426 2427 NET_EPOCH_ASSERT(); 2428 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { 2429 if (!LAGG_PORTACTIVE(lp)) 2430 continue; 2431 2432 if (last != NULL) { 2433 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT); 2434 if (m0 == NULL) { 2435 ret = ENOBUFS; 2436 errors++; 2437 break; 2438 } 2439 lagg_enqueue(last->lp_ifp, m0); 2440 } 2441 last = lp; 2442 } 2443 2444 if (last == NULL) { 2445 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2446 m_freem(m); 2447 return (ENOENT); 2448 } 2449 if ((last = lagg_link_active(sc, last)) == NULL) { 2450 errors++; 2451 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2452 m_freem(m); 2453 return (ENETDOWN); 2454 } 2455 2456 ret = lagg_enqueue(last->lp_ifp, m); 2457 if (errors != 0) 2458 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors); 2459 2460 return (ret); 2461 } 2462 2463 /* 2464 * Active failover 2465 */ 2466 static int 2467 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m) 2468 { 2469 struct lagg_port *lp; 2470 2471 /* Use the master port if active or the next available port */ 2472 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) { 2473 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2474 m_freem(m); 2475 return (ENETDOWN); 2476 } 2477 2478 /* Send mbuf */ 2479 return (lagg_enqueue(lp->lp_ifp, m)); 2480 } 2481 2482 static struct mbuf * 2483 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2484 { 2485 struct ifnet *ifp = sc->sc_ifp; 2486 struct lagg_port *tmp_tp; 2487 2488 if (lp == sc->sc_primary || V_lagg_failover_rx_all) { 2489 m->m_pkthdr.rcvif = ifp; 2490 return (m); 2491 } 2492 2493 if (!LAGG_PORTACTIVE(sc->sc_primary)) { 2494 tmp_tp = lagg_link_active(sc, sc->sc_primary); 2495 /* 2496 * If tmp_tp is null, we've received a packet when all 2497 * our links are down. Weird, but process it anyways. 2498 */ 2499 if (tmp_tp == NULL || tmp_tp == lp) { 2500 m->m_pkthdr.rcvif = ifp; 2501 return (m); 2502 } 2503 } 2504 2505 m_freem(m); 2506 return (NULL); 2507 } 2508 2509 /* 2510 * Loadbalancing 2511 */ 2512 static void 2513 lagg_lb_attach(struct lagg_softc *sc) 2514 { 2515 struct lagg_port *lp; 2516 struct lagg_lb *lb; 2517 2518 LAGG_XLOCK_ASSERT(sc); 2519 lb = malloc(sizeof(struct lagg_lb), M_LAGG, M_WAITOK | M_ZERO); 2520 lb->lb_key = m_ether_tcpip_hash_init(); 2521 sc->sc_psc = lb; 2522 2523 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2524 lagg_lb_port_create(lp); 2525 } 2526 2527 static void 2528 lagg_lb_detach(struct lagg_softc *sc) 2529 { 2530 struct lagg_lb *lb; 2531 2532 lb = (struct lagg_lb *)sc->sc_psc; 2533 if (lb != NULL) 2534 free(lb, M_LAGG); 2535 } 2536 2537 static int 2538 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp) 2539 { 2540 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2541 struct lagg_port *lp_next; 2542 int i = 0, rv; 2543 2544 rv = 0; 2545 bzero(&lb->lb_ports, sizeof(lb->lb_ports)); 2546 LAGG_XLOCK_ASSERT(sc); 2547 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { 2548 if (lp_next == lp) 2549 continue; 2550 if (i >= LAGG_MAX_PORTS) { 2551 rv = EINVAL; 2552 break; 2553 } 2554 if (sc->sc_ifflags & IFF_DEBUG) 2555 printf("%s: port %s at index %d\n", 2556 sc->sc_ifname, lp_next->lp_ifp->if_xname, i); 2557 lb->lb_ports[i++] = lp_next; 2558 } 2559 2560 return (rv); 2561 } 2562 2563 static int 2564 lagg_lb_port_create(struct lagg_port *lp) 2565 { 2566 struct lagg_softc *sc = lp->lp_softc; 2567 return (lagg_lb_porttable(sc, NULL)); 2568 } 2569 2570 static void 2571 lagg_lb_port_destroy(struct lagg_port *lp) 2572 { 2573 struct lagg_softc *sc = lp->lp_softc; 2574 lagg_lb_porttable(sc, lp); 2575 } 2576 2577 static int 2578 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m) 2579 { 2580 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; 2581 struct lagg_port *lp = NULL; 2582 uint32_t p = 0; 2583 2584 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) && 2585 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) 2586 p = m->m_pkthdr.flowid >> sc->flowid_shift; 2587 else 2588 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key); 2589 p %= sc->sc_count; 2590 lp = lb->lb_ports[p]; 2591 2592 /* 2593 * Check the port's link state. This will return the next active 2594 * port if the link is down or the port is NULL. 2595 */ 2596 if ((lp = lagg_link_active(sc, lp)) == NULL) { 2597 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2598 m_freem(m); 2599 return (ENETDOWN); 2600 } 2601 2602 /* Send mbuf */ 2603 return (lagg_enqueue(lp->lp_ifp, m)); 2604 } 2605 2606 /* 2607 * 802.3ad LACP 2608 */ 2609 static void 2610 lagg_lacp_attach(struct lagg_softc *sc) 2611 { 2612 struct lagg_port *lp; 2613 2614 lacp_attach(sc); 2615 LAGG_XLOCK_ASSERT(sc); 2616 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2617 lacp_port_create(lp); 2618 } 2619 2620 static void 2621 lagg_lacp_detach(struct lagg_softc *sc) 2622 { 2623 struct lagg_port *lp; 2624 void *psc; 2625 2626 LAGG_XLOCK_ASSERT(sc); 2627 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2628 lacp_port_destroy(lp); 2629 2630 psc = sc->sc_psc; 2631 sc->sc_psc = NULL; 2632 lacp_detach(psc); 2633 } 2634 2635 static void 2636 lagg_lacp_lladdr(struct lagg_softc *sc) 2637 { 2638 struct lagg_port *lp; 2639 2640 LAGG_SXLOCK_ASSERT(sc); 2641 2642 /* purge all the lacp ports */ 2643 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2644 lacp_port_destroy(lp); 2645 2646 /* add them back in */ 2647 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) 2648 lacp_port_create(lp); 2649 } 2650 2651 static int 2652 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m) 2653 { 2654 struct lagg_port *lp; 2655 int err; 2656 2657 lp = lacp_select_tx_port(sc, m, &err); 2658 if (lp == NULL) { 2659 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1); 2660 m_freem(m); 2661 return (err); 2662 } 2663 2664 /* Send mbuf */ 2665 return (lagg_enqueue(lp->lp_ifp, m)); 2666 } 2667 2668 static struct mbuf * 2669 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2670 { 2671 struct ifnet *ifp = sc->sc_ifp; 2672 struct ether_header *eh; 2673 u_short etype; 2674 2675 eh = mtod(m, struct ether_header *); 2676 etype = ntohs(eh->ether_type); 2677 2678 /* Tap off LACP control messages */ 2679 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) { 2680 m = lacp_input(lp, m); 2681 if (m == NULL) 2682 return (NULL); 2683 } 2684 2685 /* 2686 * If the port is not collecting or not in the active aggregator then 2687 * free and return. 2688 */ 2689 if (!lacp_iscollecting(lp) || !lacp_isactive(lp)) { 2690 m_freem(m); 2691 return (NULL); 2692 } 2693 2694 m->m_pkthdr.rcvif = ifp; 2695 return (m); 2696 } 2697 2698 /* Default input */ 2699 static struct mbuf * 2700 lagg_default_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) 2701 { 2702 struct ifnet *ifp = sc->sc_ifp; 2703 2704 /* Just pass in the packet to our lagg device */ 2705 m->m_pkthdr.rcvif = ifp; 2706 2707 return (m); 2708 } 2709