1 /* $OpenBSD: if_trunk.c,v 1.30 2007/01/31 06:20:19 reyk Exp $ */
4 * Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org>
5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/cdefs.h>
21 __FBSDID("$FreeBSD$");
24 #include "opt_inet6.h"
26 #include <sys/param.h>
27 #include <sys/kernel.h>
28 #include <sys/malloc.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>
36 #include <sys/systm.h>
40 #include <sys/rwlock.h>
41 #include <sys/taskqueue.h>
42 #include <sys/eventhandler.h>
44 #include <net/ethernet.h>
46 #include <net/if_clone.h>
47 #include <net/if_arp.h>
48 #include <net/if_dl.h>
49 #include <net/if_llc.h>
50 #include <net/if_media.h>
51 #include <net/if_types.h>
52 #include <net/if_var.h>
55 #if defined(INET) || defined(INET6)
56 #include <netinet/in.h>
59 #include <netinet/in_systm.h>
60 #include <netinet/if_ether.h>
61 #include <netinet/ip.h>
65 #include <netinet/ip6.h>
68 #include <net/if_vlan_var.h>
69 #include <net/if_lagg.h>
70 #include <net/ieee8023ad_lacp.h>
72 /* Special flags we should propagate to the lagg ports. */
75 int (*func)(struct ifnet *, int);
77 {IFF_PROMISC, ifpromisc},
78 {IFF_ALLMULTI, if_allmulti},
82 SLIST_HEAD(__trhead, lagg_softc) lagg_list; /* list of laggs */
83 static struct mtx lagg_list_mtx;
84 eventhandler_tag lagg_detach_cookie = NULL;
86 static int lagg_clone_create(struct if_clone *, int, caddr_t);
87 static void lagg_clone_destroy(struct ifnet *);
88 static struct if_clone *lagg_cloner;
89 static const char laggname[] = "lagg";
91 static void lagg_lladdr(struct lagg_softc *, uint8_t *);
92 static void lagg_capabilities(struct lagg_softc *);
93 static void lagg_port_lladdr(struct lagg_port *, uint8_t *);
94 static void lagg_port_setlladdr(void *, int);
95 static int lagg_port_create(struct lagg_softc *, struct ifnet *);
96 static int lagg_port_destroy(struct lagg_port *, int);
97 static struct mbuf *lagg_input(struct ifnet *, struct mbuf *);
98 static void lagg_linkstate(struct lagg_softc *);
99 static void lagg_port_state(struct ifnet *, int);
100 static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t);
101 static int lagg_port_output(struct ifnet *, struct mbuf *,
102 struct sockaddr *, struct route *);
103 static void lagg_port_ifdetach(void *arg __unused, struct ifnet *);
104 #ifdef LAGG_PORT_STACKING
105 static int lagg_port_checkstacking(struct lagg_softc *);
107 static void lagg_port2req(struct lagg_port *, struct lagg_reqport *);
108 static void lagg_init(void *);
109 static void lagg_stop(struct lagg_softc *);
110 static int lagg_ioctl(struct ifnet *, u_long, caddr_t);
111 static int lagg_ether_setmulti(struct lagg_softc *);
112 static int lagg_ether_cmdmulti(struct lagg_port *, int);
113 static int lagg_setflag(struct lagg_port *, int, int,
114 int (*func)(struct ifnet *, int));
115 static int lagg_setflags(struct lagg_port *, int status);
116 static int lagg_transmit(struct ifnet *, struct mbuf *);
117 static void lagg_qflush(struct ifnet *);
118 static int lagg_media_change(struct ifnet *);
119 static void lagg_media_status(struct ifnet *, struct ifmediareq *);
120 static struct lagg_port *lagg_link_active(struct lagg_softc *,
122 static const void *lagg_gethdr(struct mbuf *, u_int, u_int, void *);
124 /* Simple round robin */
125 static int lagg_rr_attach(struct lagg_softc *);
126 static int lagg_rr_detach(struct lagg_softc *);
127 static int lagg_rr_start(struct lagg_softc *, struct mbuf *);
128 static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *,
131 /* Active failover */
132 static int lagg_fail_attach(struct lagg_softc *);
133 static int lagg_fail_detach(struct lagg_softc *);
134 static int lagg_fail_start(struct lagg_softc *, struct mbuf *);
135 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *,
139 static int lagg_lb_attach(struct lagg_softc *);
140 static int lagg_lb_detach(struct lagg_softc *);
141 static int lagg_lb_port_create(struct lagg_port *);
142 static void lagg_lb_port_destroy(struct lagg_port *);
143 static int lagg_lb_start(struct lagg_softc *, struct mbuf *);
144 static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *,
146 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *);
149 static int lagg_lacp_attach(struct lagg_softc *);
150 static int lagg_lacp_detach(struct lagg_softc *);
151 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *);
152 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *,
154 static void lagg_lacp_lladdr(struct lagg_softc *);
156 /* lagg protocol table */
157 static const struct {
159 int (*ti_attach)(struct lagg_softc *);
161 { LAGG_PROTO_ROUNDROBIN, lagg_rr_attach },
162 { LAGG_PROTO_FAILOVER, lagg_fail_attach },
163 { LAGG_PROTO_LOADBALANCE, lagg_lb_attach },
164 { LAGG_PROTO_ETHERCHANNEL, lagg_lb_attach },
165 { LAGG_PROTO_LACP, lagg_lacp_attach },
166 { LAGG_PROTO_NONE, NULL }
169 SYSCTL_DECL(_net_link);
170 static SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW, 0,
173 static int lagg_failover_rx_all = 0; /* Allow input on any failover links */
174 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW,
175 &lagg_failover_rx_all, 0,
176 "Accept input from any interface in a failover lagg");
177 static int def_use_flowid = 1; /* Default value for using M_FLOWID */
178 TUNABLE_INT("net.link.lagg.default_use_flowid", &def_use_flowid);
179 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RW,
181 "Default setting for using flow id for load sharing");
184 lagg_modevent(module_t mod, int type, void *data)
189 mtx_init(&lagg_list_mtx, "if_lagg list", NULL, MTX_DEF);
190 SLIST_INIT(&lagg_list);
191 lagg_cloner = if_clone_simple(laggname, lagg_clone_create,
192 lagg_clone_destroy, 0);
193 lagg_input_p = lagg_input;
194 lagg_linkstate_p = lagg_port_state;
195 lagg_detach_cookie = EVENTHANDLER_REGISTER(
196 ifnet_departure_event, lagg_port_ifdetach, NULL,
197 EVENTHANDLER_PRI_ANY);
200 EVENTHANDLER_DEREGISTER(ifnet_departure_event,
202 if_clone_detach(lagg_cloner);
204 lagg_linkstate_p = NULL;
205 mtx_destroy(&lagg_list_mtx);
213 static moduledata_t lagg_mod = {
219 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
220 MODULE_VERSION(if_lagg, 1);
222 #if __FreeBSD_version >= 800000
224 * This routine is run via an vlan
228 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
230 struct lagg_softc *sc = ifp->if_softc;
231 struct lagg_port *lp;
233 if (ifp->if_softc != arg) /* Not our event */
237 if (!SLIST_EMPTY(&sc->sc_ports)) {
238 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
239 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
245 * This routine is run via an vlan
249 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
251 struct lagg_softc *sc = ifp->if_softc;
252 struct lagg_port *lp;
254 if (ifp->if_softc != arg) /* Not our event */
258 if (!SLIST_EMPTY(&sc->sc_ports)) {
259 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
260 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
267 lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
269 struct lagg_softc *sc;
272 static const u_char eaddr[6]; /* 00:00:00:00:00:00 */
273 struct sysctl_oid *oid;
274 char num[14]; /* sufficient for 32 bits */
276 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
277 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
283 sysctl_ctx_init(&sc->ctx);
284 snprintf(num, sizeof(num), "%u", unit);
285 sc->use_flowid = def_use_flowid;
286 oid = SYSCTL_ADD_NODE(&sc->ctx, &SYSCTL_NODE_CHILDREN(_net_link, lagg),
287 OID_AUTO, num, CTLFLAG_RD, NULL, "");
288 SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
289 "use_flowid", CTLTYPE_INT|CTLFLAG_RW, &sc->use_flowid, sc->use_flowid,
290 "Use flow id for load sharing");
291 SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
292 "count", CTLTYPE_INT|CTLFLAG_RD, &sc->sc_count, sc->sc_count,
293 "Total number of ports");
294 /* Hash all layers by default */
295 sc->sc_flags = LAGG_F_HASHL2|LAGG_F_HASHL3|LAGG_F_HASHL4;
297 sc->sc_proto = LAGG_PROTO_NONE;
298 for (i = 0; lagg_protos[i].ti_proto != LAGG_PROTO_NONE; i++) {
299 if (lagg_protos[i].ti_proto == LAGG_PROTO_DEFAULT) {
300 sc->sc_proto = lagg_protos[i].ti_proto;
301 if ((error = lagg_protos[i].ti_attach(sc)) != 0) {
310 SLIST_INIT(&sc->sc_ports);
311 TASK_INIT(&sc->sc_lladdr_task, 0, lagg_port_setlladdr, sc);
313 /* Initialise pseudo media types */
314 ifmedia_init(&sc->sc_media, 0, lagg_media_change,
316 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
317 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
319 if_initname(ifp, laggname, unit);
321 ifp->if_transmit = lagg_transmit;
322 ifp->if_qflush = lagg_qflush;
323 ifp->if_init = lagg_init;
324 ifp->if_ioctl = lagg_ioctl;
325 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
328 * Attach as an ordinary ethernet device, children will be attached
329 * as special device IFT_IEEE8023ADLAG.
331 ether_ifattach(ifp, eaddr);
333 #if __FreeBSD_version >= 800000
334 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
335 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
336 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
337 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
340 /* Insert into the global list of laggs */
341 mtx_lock(&lagg_list_mtx);
342 SLIST_INSERT_HEAD(&lagg_list, sc, sc_entries);
343 mtx_unlock(&lagg_list_mtx);
349 lagg_clone_destroy(struct ifnet *ifp)
351 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
352 struct lagg_port *lp;
357 ifp->if_flags &= ~IFF_UP;
359 #if __FreeBSD_version >= 800000
360 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
361 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
364 /* Shutdown and remove lagg ports */
365 while ((lp = SLIST_FIRST(&sc->sc_ports)) != NULL)
366 lagg_port_destroy(lp, 1);
367 /* Unhook the aggregation protocol */
368 if (sc->sc_detach != NULL)
369 (*sc->sc_detach)(sc);
373 sysctl_ctx_free(&sc->ctx);
374 ifmedia_removeall(&sc->sc_media);
378 mtx_lock(&lagg_list_mtx);
379 SLIST_REMOVE(&lagg_list, sc, lagg_softc, sc_entries);
380 mtx_unlock(&lagg_list_mtx);
382 taskqueue_drain(taskqueue_swi, &sc->sc_lladdr_task);
383 LAGG_LOCK_DESTROY(sc);
388 lagg_lladdr(struct lagg_softc *sc, uint8_t *lladdr)
390 struct ifnet *ifp = sc->sc_ifp;
392 if (memcmp(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN) == 0)
395 bcopy(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN);
396 /* Let the protocol know the MAC has changed */
397 if (sc->sc_lladdr != NULL)
398 (*sc->sc_lladdr)(sc);
399 EVENTHANDLER_INVOKE(iflladdr_event, ifp);
403 lagg_capabilities(struct lagg_softc *sc)
405 struct lagg_port *lp;
406 int cap = ~0, ena = ~0;
409 LAGG_WLOCK_ASSERT(sc);
411 /* Get capabilities from the lagg ports */
412 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
413 cap &= lp->lp_ifp->if_capabilities;
414 ena &= lp->lp_ifp->if_capenable;
415 hwa &= lp->lp_ifp->if_hwassist;
417 cap = (cap == ~0 ? 0 : cap);
418 ena = (ena == ~0 ? 0 : ena);
419 hwa = (hwa == ~0 ? 0 : hwa);
421 if (sc->sc_ifp->if_capabilities != cap ||
422 sc->sc_ifp->if_capenable != ena ||
423 sc->sc_ifp->if_hwassist != hwa) {
424 sc->sc_ifp->if_capabilities = cap;
425 sc->sc_ifp->if_capenable = ena;
426 sc->sc_ifp->if_hwassist = hwa;
427 getmicrotime(&sc->sc_ifp->if_lastchange);
429 if (sc->sc_ifflags & IFF_DEBUG)
430 if_printf(sc->sc_ifp,
431 "capabilities 0x%08x enabled 0x%08x\n", cap, ena);
436 lagg_port_lladdr(struct lagg_port *lp, uint8_t *lladdr)
438 struct lagg_softc *sc = lp->lp_softc;
439 struct ifnet *ifp = lp->lp_ifp;
440 struct lagg_llq *llq;
443 LAGG_WLOCK_ASSERT(sc);
445 if (lp->lp_detaching ||
446 memcmp(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN) == 0)
449 /* Check to make sure its not already queued to be changed */
450 SLIST_FOREACH(llq, &sc->sc_llq_head, llq_entries) {
451 if (llq->llq_ifp == ifp) {
458 llq = malloc(sizeof(struct lagg_llq), M_DEVBUF, M_NOWAIT);
459 if (llq == NULL) /* XXX what to do */
463 /* Update the lladdr even if pending, it may have changed */
465 bcopy(lladdr, llq->llq_lladdr, ETHER_ADDR_LEN);
468 SLIST_INSERT_HEAD(&sc->sc_llq_head, llq, llq_entries);
470 taskqueue_enqueue(taskqueue_swi, &sc->sc_lladdr_task);
474 * Set the interface MAC address from a taskqueue to avoid a LOR.
477 lagg_port_setlladdr(void *arg, int pending)
479 struct lagg_softc *sc = (struct lagg_softc *)arg;
480 struct lagg_llq *llq, *head;
484 /* Grab a local reference of the queue and remove it from the softc */
486 head = SLIST_FIRST(&sc->sc_llq_head);
487 SLIST_FIRST(&sc->sc_llq_head) = NULL;
491 * Traverse the queue and set the lladdr on each ifp. It is safe to do
492 * unlocked as we have the only reference to it.
494 for (llq = head; llq != NULL; llq = head) {
497 /* Set the link layer address */
498 error = if_setlladdr(ifp, llq->llq_lladdr, ETHER_ADDR_LEN);
500 printf("%s: setlladdr failed on %s\n", __func__,
503 head = SLIST_NEXT(llq, llq_entries);
509 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp)
511 struct lagg_softc *sc_ptr;
512 struct lagg_port *lp;
515 LAGG_WLOCK_ASSERT(sc);
517 /* Limit the maximal number of lagg ports */
518 if (sc->sc_count >= LAGG_MAX_PORTS)
521 /* Check if port has already been associated to a lagg */
522 if (ifp->if_lagg != NULL) {
523 /* Port is already in the current lagg? */
524 lp = (struct lagg_port *)ifp->if_lagg;
525 if (lp->lp_softc == sc)
530 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */
531 if (ifp->if_type != IFT_ETHER)
532 return (EPROTONOSUPPORT);
534 /* Allow the first Ethernet member to define the MTU */
535 if (SLIST_EMPTY(&sc->sc_ports))
536 sc->sc_ifp->if_mtu = ifp->if_mtu;
537 else if (sc->sc_ifp->if_mtu != ifp->if_mtu) {
538 if_printf(sc->sc_ifp, "invalid MTU for %s\n",
543 if ((lp = malloc(sizeof(struct lagg_port),
544 M_DEVBUF, M_NOWAIT|M_ZERO)) == NULL)
547 /* Check if port is a stacked lagg */
548 mtx_lock(&lagg_list_mtx);
549 SLIST_FOREACH(sc_ptr, &lagg_list, sc_entries) {
550 if (ifp == sc_ptr->sc_ifp) {
551 mtx_unlock(&lagg_list_mtx);
554 /* XXX disable stacking for the moment, its untested */
555 #ifdef LAGG_PORT_STACKING
556 lp->lp_flags |= LAGG_PORT_STACK;
557 if (lagg_port_checkstacking(sc_ptr) >=
559 mtx_unlock(&lagg_list_mtx);
566 mtx_unlock(&lagg_list_mtx);
568 /* Change the interface type */
569 lp->lp_iftype = ifp->if_type;
570 ifp->if_type = IFT_IEEE8023ADLAG;
572 lp->lp_ioctl = ifp->if_ioctl;
573 ifp->if_ioctl = lagg_port_ioctl;
574 lp->lp_output = ifp->if_output;
575 ifp->if_output = lagg_port_output;
580 /* Save port link layer address */
581 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ETHER_ADDR_LEN);
583 if (SLIST_EMPTY(&sc->sc_ports)) {
585 lagg_lladdr(sc, IF_LLADDR(ifp));
587 /* Update link layer address for this port */
588 lagg_port_lladdr(lp, IF_LLADDR(sc->sc_ifp));
591 /* Insert into the list of ports */
592 SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries);
595 /* Update lagg capabilities */
596 lagg_capabilities(sc);
599 /* Add multicast addresses and interface flags to this port */
600 lagg_ether_cmdmulti(lp, 1);
601 lagg_setflags(lp, 1);
603 if (sc->sc_port_create != NULL)
604 error = (*sc->sc_port_create)(lp);
606 /* remove the port again, without calling sc_port_destroy */
607 lagg_port_destroy(lp, 0);
614 #ifdef LAGG_PORT_STACKING
616 lagg_port_checkstacking(struct lagg_softc *sc)
618 struct lagg_softc *sc_ptr;
619 struct lagg_port *lp;
622 LAGG_WLOCK_ASSERT(sc);
624 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
625 if (lp->lp_flags & LAGG_PORT_STACK) {
626 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc;
627 m = MAX(m, lagg_port_checkstacking(sc_ptr));
636 lagg_port_destroy(struct lagg_port *lp, int runpd)
638 struct lagg_softc *sc = lp->lp_softc;
639 struct lagg_port *lp_ptr;
640 struct lagg_llq *llq;
641 struct ifnet *ifp = lp->lp_ifp;
643 LAGG_WLOCK_ASSERT(sc);
645 if (runpd && sc->sc_port_destroy != NULL)
646 (*sc->sc_port_destroy)(lp);
649 * Remove multicast addresses and interface flags from this port and
650 * reset the MAC address, skip if the interface is being detached.
652 if (!lp->lp_detaching) {
653 lagg_ether_cmdmulti(lp, 0);
654 lagg_setflags(lp, 0);
655 lagg_port_lladdr(lp, lp->lp_lladdr);
658 /* Restore interface */
659 ifp->if_type = lp->lp_iftype;
660 ifp->if_ioctl = lp->lp_ioctl;
661 ifp->if_output = lp->lp_output;
664 /* Finally, remove the port from the lagg */
665 SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries);
668 /* Update the primary interface */
669 if (lp == sc->sc_primary) {
670 uint8_t lladdr[ETHER_ADDR_LEN];
672 if ((lp_ptr = SLIST_FIRST(&sc->sc_ports)) == NULL) {
673 bzero(&lladdr, ETHER_ADDR_LEN);
675 bcopy(lp_ptr->lp_lladdr,
676 lladdr, ETHER_ADDR_LEN);
678 lagg_lladdr(sc, lladdr);
679 sc->sc_primary = lp_ptr;
681 /* Update link layer address for each port */
682 SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries)
683 lagg_port_lladdr(lp_ptr, lladdr);
686 /* Remove any pending lladdr changes from the queue */
687 if (lp->lp_detaching) {
688 SLIST_FOREACH(llq, &sc->sc_llq_head, llq_entries) {
689 if (llq->llq_ifp == ifp) {
690 SLIST_REMOVE(&sc->sc_llq_head, llq, lagg_llq,
693 break; /* Only appears once */
699 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__);
703 /* Update lagg capabilities */
704 lagg_capabilities(sc);
711 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
713 struct lagg_reqport *rp = (struct lagg_reqport *)data;
714 struct lagg_softc *sc;
715 struct lagg_port *lp = NULL;
718 /* Should be checked by the caller */
719 if (ifp->if_type != IFT_IEEE8023ADLAG ||
720 (lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL)
725 if (rp->rp_portname[0] == '\0' ||
726 ifunit(rp->rp_portname) != ifp) {
732 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) {
738 lagg_port2req(lp, rp);
743 if (lp->lp_ioctl == NULL) {
747 error = (*lp->lp_ioctl)(ifp, cmd, data);
751 /* Update lagg interface capabilities */
753 lagg_capabilities(sc);
758 /* Do not allow the MTU to be changed once joined */
769 if (lp->lp_ioctl != NULL)
770 return ((*lp->lp_ioctl)(ifp, cmd, data));
776 * For direct output to child ports.
779 lagg_port_output(struct ifnet *ifp, struct mbuf *m,
780 struct sockaddr *dst, struct route *ro)
782 struct lagg_port *lp = ifp->if_lagg;
784 switch (dst->sa_family) {
785 case pseudo_AF_HDRCMPLT:
787 return ((*lp->lp_output)(ifp, m, dst, ro));
790 /* drop any other frames */
796 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp)
798 struct lagg_port *lp;
799 struct lagg_softc *sc;
801 if ((lp = ifp->if_lagg) == NULL)
803 /* If the ifnet is just being renamed, don't do anything. */
804 if (ifp->if_flags & IFF_RENAMING)
810 lp->lp_detaching = 1;
811 lagg_port_destroy(lp, 1);
816 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp)
818 struct lagg_softc *sc = lp->lp_softc;
820 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname));
821 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname));
822 rp->rp_prio = lp->lp_prio;
823 rp->rp_flags = lp->lp_flags;
824 if (sc->sc_portreq != NULL)
825 (*sc->sc_portreq)(lp, (caddr_t)&rp->rp_psc);
827 /* Add protocol specific flags */
828 switch (sc->sc_proto) {
829 case LAGG_PROTO_FAILOVER:
830 if (lp == sc->sc_primary)
831 rp->rp_flags |= LAGG_PORT_MASTER;
832 if (lp == lagg_link_active(sc, sc->sc_primary))
833 rp->rp_flags |= LAGG_PORT_ACTIVE;
836 case LAGG_PROTO_ROUNDROBIN:
837 case LAGG_PROTO_LOADBALANCE:
838 case LAGG_PROTO_ETHERCHANNEL:
839 if (LAGG_PORTACTIVE(lp))
840 rp->rp_flags |= LAGG_PORT_ACTIVE;
843 case LAGG_PROTO_LACP:
844 /* LACP has a different definition of active */
845 if (lacp_isactive(lp))
846 rp->rp_flags |= LAGG_PORT_ACTIVE;
847 if (lacp_iscollecting(lp))
848 rp->rp_flags |= LAGG_PORT_COLLECTING;
849 if (lacp_isdistributing(lp))
850 rp->rp_flags |= LAGG_PORT_DISTRIBUTING;
859 struct lagg_softc *sc = (struct lagg_softc *)xsc;
860 struct lagg_port *lp;
861 struct ifnet *ifp = sc->sc_ifp;
863 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
868 ifp->if_drv_flags |= IFF_DRV_RUNNING;
869 /* Update the port lladdrs */
870 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
871 lagg_port_lladdr(lp, IF_LLADDR(ifp));
873 if (sc->sc_init != NULL)
880 lagg_stop(struct lagg_softc *sc)
882 struct ifnet *ifp = sc->sc_ifp;
884 LAGG_WLOCK_ASSERT(sc);
886 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
889 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
891 if (sc->sc_stop != NULL)
896 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
898 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
899 struct lagg_reqall *ra = (struct lagg_reqall *)data;
900 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf;
901 struct lagg_reqflags *rf = (struct lagg_reqflags *)data;
902 struct ifreq *ifr = (struct ifreq *)data;
903 struct lagg_port *lp;
905 struct thread *td = curthread;
907 int count, buflen, len, error = 0;
909 bzero(&rpbuf, sizeof(rpbuf));
915 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
917 buflen = count * sizeof(struct lagg_reqport);
920 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO);
923 ra->ra_proto = sc->sc_proto;
924 if (sc->sc_req != NULL)
925 (*sc->sc_req)(sc, (caddr_t)&ra->ra_psc);
929 len = min(ra->ra_size, buflen);
930 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
931 if (len < sizeof(rpbuf))
934 lagg_port2req(lp, &rpbuf);
935 memcpy(buf, &rpbuf, sizeof(rpbuf));
937 buf += sizeof(rpbuf);
938 len -= sizeof(rpbuf);
941 ra->ra_ports = count;
942 ra->ra_size = count * sizeof(rpbuf);
943 error = copyout(outbuf, ra->ra_port, ra->ra_size);
944 free(outbuf, M_TEMP);
947 error = priv_check(td, PRIV_NET_LAGG);
950 if (ra->ra_proto >= LAGG_PROTO_MAX) {
951 error = EPROTONOSUPPORT;
955 if (sc->sc_proto != LAGG_PROTO_NONE) {
956 /* Reset protocol first in case detach unlocks */
957 sc->sc_proto = LAGG_PROTO_NONE;
958 error = sc->sc_detach(sc);
959 sc->sc_detach = NULL;
962 sc->sc_port_create = NULL;
963 sc->sc_port_destroy = NULL;
964 sc->sc_linkstate = NULL;
967 sc->sc_lladdr = NULL;
969 sc->sc_portreq = NULL;
970 } else if (sc->sc_input != NULL) {
971 /* Still detaching */
978 for (int i = 0; i < (sizeof(lagg_protos) /
979 sizeof(lagg_protos[0])); i++) {
980 if (lagg_protos[i].ti_proto == ra->ra_proto) {
981 if (sc->sc_ifflags & IFF_DEBUG)
982 printf("%s: using proto %u\n",
984 lagg_protos[i].ti_proto);
985 sc->sc_proto = lagg_protos[i].ti_proto;
986 if (sc->sc_proto != LAGG_PROTO_NONE)
987 error = lagg_protos[i].ti_attach(sc);
993 error = EPROTONOSUPPORT;
996 rf->rf_flags = sc->sc_flags;
999 error = priv_check(td, PRIV_NET_LAGG);
1002 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) {
1007 sc->sc_flags &= ~LAGG_F_HASHMASK;
1008 sc->sc_flags |= rf->rf_flags & LAGG_F_HASHMASK;
1012 if (rp->rp_portname[0] == '\0' ||
1013 (tpif = ifunit(rp->rp_portname)) == NULL) {
1019 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1020 lp->lp_softc != sc) {
1026 lagg_port2req(lp, rp);
1030 error = priv_check(td, PRIV_NET_LAGG);
1033 if (rp->rp_portname[0] == '\0' ||
1034 (tpif = ifunit(rp->rp_portname)) == NULL) {
1039 error = lagg_port_create(sc, tpif);
1042 case SIOCSLAGGDELPORT:
1043 error = priv_check(td, PRIV_NET_LAGG);
1046 if (rp->rp_portname[0] == '\0' ||
1047 (tpif = ifunit(rp->rp_portname)) == NULL) {
1053 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1054 lp->lp_softc != sc) {
1060 error = lagg_port_destroy(lp, 1);
1064 /* Set flags on ports too */
1066 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1067 lagg_setflags(lp, 1);
1071 if (!(ifp->if_flags & IFF_UP) &&
1072 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1074 * If interface is marked down and it is running,
1075 * then stop and disable it.
1080 } else if ((ifp->if_flags & IFF_UP) &&
1081 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1083 * If interface is marked up and it is stopped, then
1086 (*ifp->if_init)(sc);
1092 error = lagg_ether_setmulti(sc);
1097 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
1102 /* Do not allow the MTU or caps to be directly changed */
1107 error = ether_ioctl(ifp, cmd, data);
1114 lagg_ether_setmulti(struct lagg_softc *sc)
1116 struct lagg_port *lp;
1118 LAGG_WLOCK_ASSERT(sc);
1120 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1121 /* First, remove any existing filter entries. */
1122 lagg_ether_cmdmulti(lp, 0);
1123 /* copy all addresses from the lagg interface to the port */
1124 lagg_ether_cmdmulti(lp, 1);
1130 lagg_ether_cmdmulti(struct lagg_port *lp, int set)
1132 struct lagg_softc *sc = lp->lp_softc;
1133 struct ifnet *ifp = lp->lp_ifp;
1134 struct ifnet *scifp = sc->sc_ifp;
1136 struct ifmultiaddr *ifma, *rifma = NULL;
1137 struct sockaddr_dl sdl;
1140 LAGG_WLOCK_ASSERT(sc);
1142 bzero((char *)&sdl, sizeof(sdl));
1143 sdl.sdl_len = sizeof(sdl);
1144 sdl.sdl_family = AF_LINK;
1145 sdl.sdl_type = IFT_ETHER;
1146 sdl.sdl_alen = ETHER_ADDR_LEN;
1147 sdl.sdl_index = ifp->if_index;
1150 TAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) {
1151 if (ifma->ifma_addr->sa_family != AF_LINK)
1153 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1154 LLADDR(&sdl), ETHER_ADDR_LEN);
1156 error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma);
1159 mc = malloc(sizeof(struct lagg_mc), M_DEVBUF, M_NOWAIT);
1162 mc->mc_ifma = rifma;
1163 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries);
1166 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) {
1167 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries);
1168 if_delmulti_ifma(mc->mc_ifma);
1175 /* Handle a ref counted flag that should be set on the lagg port as well */
1177 lagg_setflag(struct lagg_port *lp, int flag, int status,
1178 int (*func)(struct ifnet *, int))
1180 struct lagg_softc *sc = lp->lp_softc;
1181 struct ifnet *scifp = sc->sc_ifp;
1182 struct ifnet *ifp = lp->lp_ifp;
1185 LAGG_WLOCK_ASSERT(sc);
1187 status = status ? (scifp->if_flags & flag) : 0;
1188 /* Now "status" contains the flag value or 0 */
1191 * See if recorded ports status is different from what
1192 * we want it to be. If it is, flip it. We record ports
1193 * status in lp_ifflags so that we won't clear ports flag
1194 * we haven't set. In fact, we don't clear or set ports
1195 * flags directly, but get or release references to them.
1196 * That's why we can be sure that recorded flags still are
1197 * in accord with actual ports flags.
1199 if (status != (lp->lp_ifflags & flag)) {
1200 error = (*func)(ifp, status);
1203 lp->lp_ifflags &= ~flag;
1204 lp->lp_ifflags |= status;
1210 * Handle IFF_* flags that require certain changes on the lagg port
1211 * if "status" is true, update ports flags respective to the lagg
1212 * if "status" is false, forcedly clear the flags set on port.
1215 lagg_setflags(struct lagg_port *lp, int status)
1219 for (i = 0; lagg_pflags[i].flag; i++) {
1220 error = lagg_setflag(lp, lagg_pflags[i].flag,
1221 status, lagg_pflags[i].func);
1229 lagg_transmit(struct ifnet *ifp, struct mbuf *m)
1231 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1232 int error, len, mcast;
1234 len = m->m_pkthdr.len;
1235 mcast = (m->m_flags & (M_MCAST | M_BCAST)) ? 1 : 0;
1238 /* We need a Tx algorithm and at least one port */
1239 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
1246 ETHER_BPF_MTAP(ifp, m);
1248 error = (*sc->sc_start)(sc, m);
1253 ifp->if_omcasts += mcast;
1254 ifp->if_obytes += len;
1262 * The ifp->if_qflush entry point for lagg(4) is no-op.
1265 lagg_qflush(struct ifnet *ifp __unused)
1269 static struct mbuf *
1270 lagg_input(struct ifnet *ifp, struct mbuf *m)
1272 struct lagg_port *lp = ifp->if_lagg;
1273 struct lagg_softc *sc = lp->lp_softc;
1274 struct ifnet *scifp = sc->sc_ifp;
1277 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1278 (lp->lp_flags & LAGG_PORT_DISABLED) ||
1279 sc->sc_proto == LAGG_PROTO_NONE) {
1285 ETHER_BPF_MTAP(scifp, m);
1287 m = (*sc->sc_input)(sc, lp, m);
1290 scifp->if_ipackets++;
1291 scifp->if_ibytes += m->m_pkthdr.len;
1293 if (scifp->if_flags & IFF_MONITOR) {
1304 lagg_media_change(struct ifnet *ifp)
1306 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1308 if (sc->sc_ifflags & IFF_DEBUG)
1309 printf("%s\n", __func__);
1316 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1318 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1319 struct lagg_port *lp;
1321 imr->ifm_status = IFM_AVALID;
1322 imr->ifm_active = IFM_ETHER | IFM_AUTO;
1325 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1326 if (LAGG_PORTACTIVE(lp))
1327 imr->ifm_status |= IFM_ACTIVE;
1333 lagg_linkstate(struct lagg_softc *sc)
1335 struct lagg_port *lp;
1336 int new_link = LINK_STATE_DOWN;
1339 /* Our link is considered up if at least one of our ports is active */
1340 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1341 if (lp->lp_link_state == LINK_STATE_UP) {
1342 new_link = LINK_STATE_UP;
1346 if_link_state_change(sc->sc_ifp, new_link);
1348 /* Update if_baudrate to reflect the max possible speed */
1349 switch (sc->sc_proto) {
1350 case LAGG_PROTO_FAILOVER:
1351 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ?
1352 sc->sc_primary->lp_ifp->if_baudrate : 0;
1354 case LAGG_PROTO_ROUNDROBIN:
1355 case LAGG_PROTO_LOADBALANCE:
1356 case LAGG_PROTO_ETHERCHANNEL:
1358 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1359 speed += lp->lp_ifp->if_baudrate;
1360 sc->sc_ifp->if_baudrate = speed;
1362 case LAGG_PROTO_LACP:
1363 /* LACP updates if_baudrate itself */
1369 lagg_port_state(struct ifnet *ifp, int state)
1371 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg;
1372 struct lagg_softc *sc = NULL;
1381 if (sc->sc_linkstate != NULL)
1382 (*sc->sc_linkstate)(lp);
1387 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp)
1389 struct lagg_port *lp_next, *rval = NULL;
1390 // int new_link = LINK_STATE_DOWN;
1392 LAGG_RLOCK_ASSERT(sc);
1394 * Search a port which reports an active link state.
1399 if (LAGG_PORTACTIVE(lp)) {
1403 if ((lp_next = SLIST_NEXT(lp, lp_entries)) != NULL &&
1404 LAGG_PORTACTIVE(lp_next)) {
1410 SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
1411 if (LAGG_PORTACTIVE(lp_next)) {
1420 * The IEEE 802.1D standard assumes that a lagg with
1421 * multiple ports is always full duplex. This is valid
1422 * for load sharing laggs and if at least two links
1423 * are active. Unfortunately, checking the latter would
1424 * be too expensive at this point.
1426 if ((sc->sc_capabilities & IFCAP_LAGG_FULLDUPLEX) &&
1428 new_link = LINK_STATE_FULL_DUPLEX;
1430 new_link = rval->lp_link_state;
1438 lagg_gethdr(struct mbuf *m, u_int off, u_int len, void *buf)
1440 if (m->m_pkthdr.len < (off + len)) {
1442 } else if (m->m_len < (off + len)) {
1443 m_copydata(m, off, len, buf);
1446 return (mtod(m, char *) + off);
1450 lagg_hashmbuf(struct lagg_softc *sc, struct mbuf *m, uint32_t key)
1455 struct ether_header *eh;
1456 const struct ether_vlan_header *vlan;
1458 const struct ip *ip;
1459 const uint32_t *ports;
1463 const struct ip6_hdr *ip6;
1473 struct ether_vlan_header vlan;
1481 eh = mtod(m, struct ether_header *);
1482 etype = ntohs(eh->ether_type);
1483 if (sc->sc_flags & LAGG_F_HASHL2) {
1484 p = hash32_buf(&eh->ether_shost, ETHER_ADDR_LEN, p);
1485 p = hash32_buf(&eh->ether_dhost, ETHER_ADDR_LEN, p);
1488 /* Special handling for encapsulating VLAN frames */
1489 if ((m->m_flags & M_VLANTAG) && (sc->sc_flags & LAGG_F_HASHL2)) {
1490 p = hash32_buf(&m->m_pkthdr.ether_vtag,
1491 sizeof(m->m_pkthdr.ether_vtag), p);
1492 } else if (etype == ETHERTYPE_VLAN) {
1493 vlan = lagg_gethdr(m, off, sizeof(*vlan), &buf);
1497 if (sc->sc_flags & LAGG_F_HASHL2)
1498 p = hash32_buf(&vlan->evl_tag, sizeof(vlan->evl_tag), p);
1499 etype = ntohs(vlan->evl_proto);
1500 off += sizeof(*vlan) - sizeof(*eh);
1506 ip = lagg_gethdr(m, off, sizeof(*ip), &buf);
1510 if (sc->sc_flags & LAGG_F_HASHL3) {
1511 p = hash32_buf(&ip->ip_src, sizeof(struct in_addr), p);
1512 p = hash32_buf(&ip->ip_dst, sizeof(struct in_addr), p);
1514 if (!(sc->sc_flags & LAGG_F_HASHL4))
1520 iphlen = ip->ip_hl << 2;
1521 if (iphlen < sizeof(*ip))
1524 ports = lagg_gethdr(m, off, sizeof(*ports), &buf);
1527 p = hash32_buf(ports, sizeof(*ports), p);
1533 case ETHERTYPE_IPV6:
1534 if (!(sc->sc_flags & LAGG_F_HASHL3))
1536 ip6 = lagg_gethdr(m, off, sizeof(*ip6), &buf);
1540 p = hash32_buf(&ip6->ip6_src, sizeof(struct in6_addr), p);
1541 p = hash32_buf(&ip6->ip6_dst, sizeof(struct in6_addr), p);
1542 flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
1543 p = hash32_buf(&flow, sizeof(flow), p); /* IPv6 flow label */
1552 lagg_enqueue(struct ifnet *ifp, struct mbuf *m)
1555 return (ifp->if_transmit)(ifp, m);
1559 * Simple round robin aggregation
1563 lagg_rr_attach(struct lagg_softc *sc)
1565 sc->sc_detach = lagg_rr_detach;
1566 sc->sc_start = lagg_rr_start;
1567 sc->sc_input = lagg_rr_input;
1568 sc->sc_port_create = NULL;
1569 sc->sc_capabilities = IFCAP_LAGG_FULLDUPLEX;
1576 lagg_rr_detach(struct lagg_softc *sc)
1582 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m)
1584 struct lagg_port *lp;
1587 p = atomic_fetchadd_32(&sc->sc_seq, 1);
1589 lp = SLIST_FIRST(&sc->sc_ports);
1591 lp = SLIST_NEXT(lp, lp_entries);
1594 * Check the port's link state. This will return the next active
1595 * port if the link is down or the port is NULL.
1597 if ((lp = lagg_link_active(sc, lp)) == NULL) {
1603 return (lagg_enqueue(lp->lp_ifp, m));
1606 static struct mbuf *
1607 lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1609 struct ifnet *ifp = sc->sc_ifp;
1611 /* Just pass in the packet to our lagg device */
1612 m->m_pkthdr.rcvif = ifp;
1622 lagg_fail_attach(struct lagg_softc *sc)
1624 sc->sc_detach = lagg_fail_detach;
1625 sc->sc_start = lagg_fail_start;
1626 sc->sc_input = lagg_fail_input;
1627 sc->sc_port_create = NULL;
1628 sc->sc_port_destroy = NULL;
1634 lagg_fail_detach(struct lagg_softc *sc)
1640 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m)
1642 struct lagg_port *lp;
1644 /* Use the master port if active or the next available port */
1645 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) {
1651 return (lagg_enqueue(lp->lp_ifp, m));
1654 static struct mbuf *
1655 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1657 struct ifnet *ifp = sc->sc_ifp;
1658 struct lagg_port *tmp_tp;
1660 if (lp == sc->sc_primary || lagg_failover_rx_all) {
1661 m->m_pkthdr.rcvif = ifp;
1665 if (!LAGG_PORTACTIVE(sc->sc_primary)) {
1666 tmp_tp = lagg_link_active(sc, sc->sc_primary);
1668 * If tmp_tp is null, we've recieved a packet when all
1669 * our links are down. Weird, but process it anyways.
1671 if ((tmp_tp == NULL || tmp_tp == lp)) {
1672 m->m_pkthdr.rcvif = ifp;
1686 lagg_lb_attach(struct lagg_softc *sc)
1688 struct lagg_port *lp;
1691 if ((lb = (struct lagg_lb *)malloc(sizeof(struct lagg_lb),
1692 M_DEVBUF, M_NOWAIT|M_ZERO)) == NULL)
1695 sc->sc_detach = lagg_lb_detach;
1696 sc->sc_start = lagg_lb_start;
1697 sc->sc_input = lagg_lb_input;
1698 sc->sc_port_create = lagg_lb_port_create;
1699 sc->sc_port_destroy = lagg_lb_port_destroy;
1700 sc->sc_capabilities = IFCAP_LAGG_FULLDUPLEX;
1702 lb->lb_key = arc4random();
1703 sc->sc_psc = (caddr_t)lb;
1705 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1706 lagg_lb_port_create(lp);
1712 lagg_lb_detach(struct lagg_softc *sc)
1714 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
1721 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp)
1723 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
1724 struct lagg_port *lp_next;
1727 bzero(&lb->lb_ports, sizeof(lb->lb_ports));
1728 SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
1731 if (i >= LAGG_MAX_PORTS)
1733 if (sc->sc_ifflags & IFF_DEBUG)
1734 printf("%s: port %s at index %d\n",
1735 sc->sc_ifname, lp_next->lp_ifname, i);
1736 lb->lb_ports[i++] = lp_next;
1743 lagg_lb_port_create(struct lagg_port *lp)
1745 struct lagg_softc *sc = lp->lp_softc;
1746 return (lagg_lb_porttable(sc, NULL));
1750 lagg_lb_port_destroy(struct lagg_port *lp)
1752 struct lagg_softc *sc = lp->lp_softc;
1753 lagg_lb_porttable(sc, lp);
1757 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m)
1759 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
1760 struct lagg_port *lp = NULL;
1763 if (sc->use_flowid && (m->m_flags & M_FLOWID))
1764 p = m->m_pkthdr.flowid;
1766 p = lagg_hashmbuf(sc, m, lb->lb_key);
1768 lp = lb->lb_ports[p];
1771 * Check the port's link state. This will return the next active
1772 * port if the link is down or the port is NULL.
1774 if ((lp = lagg_link_active(sc, lp)) == NULL) {
1780 return (lagg_enqueue(lp->lp_ifp, m));
1783 static struct mbuf *
1784 lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1786 struct ifnet *ifp = sc->sc_ifp;
1788 /* Just pass in the packet to our lagg device */
1789 m->m_pkthdr.rcvif = ifp;
1799 lagg_lacp_attach(struct lagg_softc *sc)
1801 struct lagg_port *lp;
1804 sc->sc_detach = lagg_lacp_detach;
1805 sc->sc_port_create = lacp_port_create;
1806 sc->sc_port_destroy = lacp_port_destroy;
1807 sc->sc_linkstate = lacp_linkstate;
1808 sc->sc_start = lagg_lacp_start;
1809 sc->sc_input = lagg_lacp_input;
1810 sc->sc_init = lacp_init;
1811 sc->sc_stop = lacp_stop;
1812 sc->sc_lladdr = lagg_lacp_lladdr;
1813 sc->sc_req = lacp_req;
1814 sc->sc_portreq = lacp_portreq;
1816 error = lacp_attach(sc);
1820 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1821 lacp_port_create(lp);
1827 lagg_lacp_detach(struct lagg_softc *sc)
1829 struct lagg_port *lp;
1832 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1833 lacp_port_destroy(lp);
1835 /* unlocking is safe here */
1837 error = lacp_detach(sc);
1844 lagg_lacp_lladdr(struct lagg_softc *sc)
1846 struct lagg_port *lp;
1848 /* purge all the lacp ports */
1849 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1850 lacp_port_destroy(lp);
1852 /* add them back in */
1853 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1854 lacp_port_create(lp);
1858 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
1860 struct lagg_port *lp;
1862 lp = lacp_select_tx_port(sc, m);
1869 return (lagg_enqueue(lp->lp_ifp, m));
1872 static struct mbuf *
1873 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1875 struct ifnet *ifp = sc->sc_ifp;
1876 struct ether_header *eh;
1879 eh = mtod(m, struct ether_header *);
1880 etype = ntohs(eh->ether_type);
1882 /* Tap off LACP control messages */
1883 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
1884 m = lacp_input(lp, m);
1890 * If the port is not collecting or not in the active aggregator then
1893 if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) {
1898 m->m_pkthdr.rcvif = ifp;