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