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>
6 * Copyright (c) 2014, 2016 Marcelo Araujo <araujo@FreeBSD.org>
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.
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.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
25 #include "opt_inet6.h"
26 #include "opt_ratelimit.h"
28 #include <sys/param.h>
29 #include <sys/kernel.h>
30 #include <sys/malloc.h>
32 #include <sys/queue.h>
33 #include <sys/socket.h>
34 #include <sys/sockio.h>
35 #include <sys/sysctl.h>
36 #include <sys/module.h>
38 #include <sys/systm.h>
41 #include <sys/rmlock.h>
43 #include <sys/taskqueue.h>
44 #include <sys/eventhandler.h>
46 #include <net/ethernet.h>
48 #include <net/if_clone.h>
49 #include <net/if_arp.h>
50 #include <net/if_dl.h>
51 #include <net/if_media.h>
52 #include <net/if_types.h>
53 #include <net/if_var.h>
57 #if defined(INET) || defined(INET6)
58 #include <netinet/in.h>
59 #include <netinet/ip.h>
62 #include <netinet/in_systm.h>
63 #include <netinet/if_ether.h>
67 #include <netinet/ip6.h>
68 #include <netinet6/in6_var.h>
69 #include <netinet6/in6_ifattach.h>
72 #include <net/if_vlan_var.h>
73 #include <net/if_lagg.h>
74 #include <net/ieee8023ad_lacp.h>
76 #define LAGG_RLOCK() struct epoch_tracker lagg_et; epoch_enter_preempt(net_epoch_preempt, &lagg_et)
77 #define LAGG_RUNLOCK() epoch_exit_preempt(net_epoch_preempt, &lagg_et)
78 #define LAGG_RLOCK_ASSERT() MPASS(in_epoch(net_epoch_preempt))
79 #define LAGG_UNLOCK_ASSERT() MPASS(!in_epoch(net_epoch_preempt))
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_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED)
86 #define LAGG_XLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_XLOCKED)
88 /* Special flags we should propagate to the lagg ports. */
91 int (*func)(struct ifnet *, int);
93 {IFF_PROMISC, ifpromisc},
94 {IFF_ALLMULTI, if_allmulti},
98 VNET_DEFINE(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */
99 #define V_lagg_list VNET(lagg_list)
100 VNET_DEFINE_STATIC(struct mtx, lagg_list_mtx);
101 #define V_lagg_list_mtx VNET(lagg_list_mtx)
102 #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \
103 "if_lagg list", NULL, MTX_DEF)
104 #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx)
105 #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx)
106 #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_lagg_list_mtx)
107 eventhandler_tag lagg_detach_cookie = NULL;
109 static int lagg_clone_create(struct if_clone *, int, caddr_t);
110 static void lagg_clone_destroy(struct ifnet *);
111 VNET_DEFINE_STATIC(struct if_clone *, lagg_cloner);
112 #define V_lagg_cloner VNET(lagg_cloner)
113 static const char laggname[] = "lagg";
115 static void lagg_capabilities(struct lagg_softc *);
116 static int lagg_port_create(struct lagg_softc *, struct ifnet *);
117 static int lagg_port_destroy(struct lagg_port *, int);
118 static struct mbuf *lagg_input(struct ifnet *, struct mbuf *);
119 static void lagg_linkstate(struct lagg_softc *);
120 static void lagg_port_state(struct ifnet *, int);
121 static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t);
122 static int lagg_port_output(struct ifnet *, struct mbuf *,
123 const struct sockaddr *, struct route *);
124 static void lagg_port_ifdetach(void *arg __unused, struct ifnet *);
125 #ifdef LAGG_PORT_STACKING
126 static int lagg_port_checkstacking(struct lagg_softc *);
128 static void lagg_port2req(struct lagg_port *, struct lagg_reqport *);
129 static void lagg_init(void *);
130 static void lagg_stop(struct lagg_softc *);
131 static int lagg_ioctl(struct ifnet *, u_long, caddr_t);
133 static int lagg_snd_tag_alloc(struct ifnet *,
134 union if_snd_tag_alloc_params *,
135 struct m_snd_tag **);
137 static int lagg_setmulti(struct lagg_port *);
138 static int lagg_clrmulti(struct lagg_port *);
139 static int lagg_setcaps(struct lagg_port *, int cap);
140 static int lagg_setflag(struct lagg_port *, int, int,
141 int (*func)(struct ifnet *, int));
142 static int lagg_setflags(struct lagg_port *, int status);
143 static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt);
144 static int lagg_transmit(struct ifnet *, struct mbuf *);
145 static void lagg_qflush(struct ifnet *);
146 static int lagg_media_change(struct ifnet *);
147 static void lagg_media_status(struct ifnet *, struct ifmediareq *);
148 static struct lagg_port *lagg_link_active(struct lagg_softc *,
151 /* Simple round robin */
152 static void lagg_rr_attach(struct lagg_softc *);
153 static int lagg_rr_start(struct lagg_softc *, struct mbuf *);
154 static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *,
157 /* Active failover */
158 static int lagg_fail_start(struct lagg_softc *, struct mbuf *);
159 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *,
163 static void lagg_lb_attach(struct lagg_softc *);
164 static void lagg_lb_detach(struct lagg_softc *);
165 static int lagg_lb_port_create(struct lagg_port *);
166 static void lagg_lb_port_destroy(struct lagg_port *);
167 static int lagg_lb_start(struct lagg_softc *, struct mbuf *);
168 static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *,
170 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *);
173 static int lagg_bcast_start(struct lagg_softc *, struct mbuf *);
174 static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *,
178 static void lagg_lacp_attach(struct lagg_softc *);
179 static void lagg_lacp_detach(struct lagg_softc *);
180 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *);
181 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *,
183 static void lagg_lacp_lladdr(struct lagg_softc *);
185 /* lagg protocol table */
186 static const struct lagg_proto {
188 void (*pr_attach)(struct lagg_softc *);
189 void (*pr_detach)(struct lagg_softc *);
190 int (*pr_start)(struct lagg_softc *, struct mbuf *);
191 struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *,
193 int (*pr_addport)(struct lagg_port *);
194 void (*pr_delport)(struct lagg_port *);
195 void (*pr_linkstate)(struct lagg_port *);
196 void (*pr_init)(struct lagg_softc *);
197 void (*pr_stop)(struct lagg_softc *);
198 void (*pr_lladdr)(struct lagg_softc *);
199 void (*pr_request)(struct lagg_softc *, void *);
200 void (*pr_portreq)(struct lagg_port *, void *);
203 .pr_num = LAGG_PROTO_NONE
206 .pr_num = LAGG_PROTO_ROUNDROBIN,
207 .pr_attach = lagg_rr_attach,
208 .pr_start = lagg_rr_start,
209 .pr_input = lagg_rr_input,
212 .pr_num = LAGG_PROTO_FAILOVER,
213 .pr_start = lagg_fail_start,
214 .pr_input = lagg_fail_input,
217 .pr_num = LAGG_PROTO_LOADBALANCE,
218 .pr_attach = lagg_lb_attach,
219 .pr_detach = lagg_lb_detach,
220 .pr_start = lagg_lb_start,
221 .pr_input = lagg_lb_input,
222 .pr_addport = lagg_lb_port_create,
223 .pr_delport = lagg_lb_port_destroy,
226 .pr_num = LAGG_PROTO_LACP,
227 .pr_attach = lagg_lacp_attach,
228 .pr_detach = lagg_lacp_detach,
229 .pr_start = lagg_lacp_start,
230 .pr_input = lagg_lacp_input,
231 .pr_addport = lacp_port_create,
232 .pr_delport = lacp_port_destroy,
233 .pr_linkstate = lacp_linkstate,
234 .pr_init = lacp_init,
235 .pr_stop = lacp_stop,
236 .pr_lladdr = lagg_lacp_lladdr,
237 .pr_request = lacp_req,
238 .pr_portreq = lacp_portreq,
241 .pr_num = LAGG_PROTO_BROADCAST,
242 .pr_start = lagg_bcast_start,
243 .pr_input = lagg_bcast_input,
247 SYSCTL_DECL(_net_link);
248 SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW, 0,
251 /* Allow input on any failover links */
252 VNET_DEFINE_STATIC(int, lagg_failover_rx_all);
253 #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all)
254 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET,
255 &VNET_NAME(lagg_failover_rx_all), 0,
256 "Accept input from any interface in a failover lagg");
258 /* Default value for using flowid */
259 VNET_DEFINE_STATIC(int, def_use_flowid) = 0;
260 #define V_def_use_flowid VNET(def_use_flowid)
261 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN,
262 &VNET_NAME(def_use_flowid), 0,
263 "Default setting for using flow id for load sharing");
265 /* Default value for flowid shift */
266 VNET_DEFINE_STATIC(int, def_flowid_shift) = 16;
267 #define V_def_flowid_shift VNET(def_flowid_shift)
268 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN,
269 &VNET_NAME(def_flowid_shift), 0,
270 "Default setting for flowid shift for load sharing");
273 vnet_lagg_init(const void *unused __unused)
276 LAGG_LIST_LOCK_INIT();
277 SLIST_INIT(&V_lagg_list);
278 V_lagg_cloner = if_clone_simple(laggname, lagg_clone_create,
279 lagg_clone_destroy, 0);
281 VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
282 vnet_lagg_init, NULL);
285 vnet_lagg_uninit(const void *unused __unused)
288 if_clone_detach(V_lagg_cloner);
289 LAGG_LIST_LOCK_DESTROY();
291 VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY,
292 vnet_lagg_uninit, NULL);
295 lagg_modevent(module_t mod, int type, void *data)
300 lagg_input_p = lagg_input;
301 lagg_linkstate_p = lagg_port_state;
302 lagg_detach_cookie = EVENTHANDLER_REGISTER(
303 ifnet_departure_event, lagg_port_ifdetach, NULL,
304 EVENTHANDLER_PRI_ANY);
307 EVENTHANDLER_DEREGISTER(ifnet_departure_event,
310 lagg_linkstate_p = NULL;
318 static moduledata_t lagg_mod = {
324 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
325 MODULE_VERSION(if_lagg, 1);
328 lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr)
331 LAGG_XLOCK_ASSERT(sc);
332 KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto",
335 if (sc->sc_ifflags & IFF_DEBUG)
336 if_printf(sc->sc_ifp, "using proto %u\n", pr);
338 if (lagg_protos[pr].pr_attach != NULL)
339 lagg_protos[pr].pr_attach(sc);
344 lagg_proto_detach(struct lagg_softc *sc)
348 LAGG_XLOCK_ASSERT(sc);
350 sc->sc_proto = LAGG_PROTO_NONE;
352 if (lagg_protos[pr].pr_detach != NULL)
353 lagg_protos[pr].pr_detach(sc);
357 lagg_proto_start(struct lagg_softc *sc, struct mbuf *m)
360 return (lagg_protos[sc->sc_proto].pr_start(sc, m));
364 lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
367 return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m));
371 lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp)
374 if (lagg_protos[sc->sc_proto].pr_addport == NULL)
377 return (lagg_protos[sc->sc_proto].pr_addport(lp));
381 lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp)
384 if (lagg_protos[sc->sc_proto].pr_delport != NULL)
385 lagg_protos[sc->sc_proto].pr_delport(lp);
389 lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp)
392 if (lagg_protos[sc->sc_proto].pr_linkstate != NULL)
393 lagg_protos[sc->sc_proto].pr_linkstate(lp);
397 lagg_proto_init(struct lagg_softc *sc)
400 if (lagg_protos[sc->sc_proto].pr_init != NULL)
401 lagg_protos[sc->sc_proto].pr_init(sc);
405 lagg_proto_stop(struct lagg_softc *sc)
408 if (lagg_protos[sc->sc_proto].pr_stop != NULL)
409 lagg_protos[sc->sc_proto].pr_stop(sc);
413 lagg_proto_lladdr(struct lagg_softc *sc)
416 if (lagg_protos[sc->sc_proto].pr_lladdr != NULL)
417 lagg_protos[sc->sc_proto].pr_lladdr(sc);
421 lagg_proto_request(struct lagg_softc *sc, void *v)
424 if (lagg_protos[sc->sc_proto].pr_request != NULL)
425 lagg_protos[sc->sc_proto].pr_request(sc, v);
429 lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v)
432 if (lagg_protos[sc->sc_proto].pr_portreq != NULL)
433 lagg_protos[sc->sc_proto].pr_portreq(lp, v);
437 * This routine is run via an vlan
441 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
443 struct lagg_softc *sc = ifp->if_softc;
444 struct lagg_port *lp;
446 if (ifp->if_softc != arg) /* Not our event */
450 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
451 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
456 * This routine is run via an vlan
460 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
462 struct lagg_softc *sc = ifp->if_softc;
463 struct lagg_port *lp;
465 if (ifp->if_softc != arg) /* Not our event */
469 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
470 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
475 lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
477 struct lagg_softc *sc;
479 static const u_char eaddr[6]; /* 00:00:00:00:00:00 */
481 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
482 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
490 if (V_def_use_flowid)
491 sc->sc_opts |= LAGG_OPT_USE_FLOWID;
492 sc->flowid_shift = V_def_flowid_shift;
494 /* Hash all layers by default */
495 sc->sc_flags = MBUF_HASHFLAG_L2|MBUF_HASHFLAG_L3|MBUF_HASHFLAG_L4;
497 lagg_proto_attach(sc, LAGG_PROTO_DEFAULT);
499 CK_SLIST_INIT(&sc->sc_ports);
501 /* Initialise pseudo media types */
502 ifmedia_init(&sc->sc_media, 0, lagg_media_change,
504 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
505 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
507 if_initname(ifp, laggname, unit);
509 ifp->if_transmit = lagg_transmit;
510 ifp->if_qflush = lagg_qflush;
511 ifp->if_init = lagg_init;
512 ifp->if_ioctl = lagg_ioctl;
513 ifp->if_get_counter = lagg_get_counter;
514 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
516 ifp->if_snd_tag_alloc = lagg_snd_tag_alloc;
518 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS;
521 * Attach as an ordinary ethernet device, children will be attached
522 * as special device IFT_IEEE8023ADLAG.
524 ether_ifattach(ifp, eaddr);
526 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
527 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
528 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
529 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
531 /* Insert into the global list of laggs */
533 SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries);
541 lagg_clone_destroy(struct ifnet *ifp)
543 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
544 struct lagg_port *lp;
547 sc->sc_destroying = 1;
549 ifp->if_flags &= ~IFF_UP;
551 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
552 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
554 /* Shutdown and remove lagg ports */
555 while ((lp = CK_SLIST_FIRST(&sc->sc_ports)) != NULL)
556 lagg_port_destroy(lp, 1);
558 /* Unhook the aggregation protocol */
559 lagg_proto_detach(sc);
562 ifmedia_removeall(&sc->sc_media);
567 SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries);
575 lagg_capabilities(struct lagg_softc *sc)
577 struct lagg_port *lp;
580 struct ifnet_hw_tsomax hw_tsomax;
582 LAGG_XLOCK_ASSERT(sc);
584 /* Get common enabled capabilities for the lagg ports */
586 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
587 ena &= lp->lp_ifp->if_capenable;
588 ena = (ena == ~0 ? 0 : ena);
591 * Apply common enabled capabilities back to the lagg ports.
592 * May require several iterations if they are dependent.
596 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
597 lagg_setcaps(lp, ena);
598 ena &= lp->lp_ifp->if_capenable;
600 } while (pena != ena);
602 /* Get other capabilities from the lagg ports */
605 memset(&hw_tsomax, 0, sizeof(hw_tsomax));
606 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
607 cap &= lp->lp_ifp->if_capabilities;
608 hwa &= lp->lp_ifp->if_hwassist;
609 if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax);
611 cap = (cap == ~0 ? 0 : cap);
612 hwa = (hwa == ~(uint64_t)0 ? 0 : hwa);
614 if (sc->sc_ifp->if_capabilities != cap ||
615 sc->sc_ifp->if_capenable != ena ||
616 sc->sc_ifp->if_hwassist != hwa ||
617 if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) {
618 sc->sc_ifp->if_capabilities = cap;
619 sc->sc_ifp->if_capenable = ena;
620 sc->sc_ifp->if_hwassist = hwa;
621 getmicrotime(&sc->sc_ifp->if_lastchange);
623 if (sc->sc_ifflags & IFF_DEBUG)
624 if_printf(sc->sc_ifp,
625 "capabilities 0x%08x enabled 0x%08x\n", cap, ena);
630 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp)
632 struct lagg_softc *sc_ptr;
633 struct lagg_port *lp, *tlp;
635 int error, i, oldmtu;
638 LAGG_XLOCK_ASSERT(sc);
640 if (sc->sc_ifp == ifp) {
641 if_printf(sc->sc_ifp,
642 "cannot add a lagg to itself as a port\n");
646 /* Limit the maximal number of lagg ports */
647 if (sc->sc_count >= LAGG_MAX_PORTS)
650 /* Check if port has already been associated to a lagg */
651 if (ifp->if_lagg != NULL) {
652 /* Port is already in the current lagg? */
653 lp = (struct lagg_port *)ifp->if_lagg;
654 if (lp->lp_softc == sc)
659 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */
660 if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN)
661 return (EPROTONOSUPPORT);
663 /* Allow the first Ethernet member to define the MTU */
665 if (CK_SLIST_EMPTY(&sc->sc_ports)) {
666 sc->sc_ifp->if_mtu = ifp->if_mtu;
667 } else if (sc->sc_ifp->if_mtu != ifp->if_mtu) {
668 if (ifp->if_ioctl == NULL) {
669 if_printf(sc->sc_ifp, "cannot change MTU for %s\n",
673 oldmtu = ifp->if_mtu;
674 strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name));
675 ifr.ifr_mtu = sc->sc_ifp->if_mtu;
676 error = (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
678 if_printf(sc->sc_ifp, "invalid MTU for %s\n",
682 ifr.ifr_mtu = oldmtu;
685 lp = malloc(sizeof(struct lagg_port), M_DEVBUF, M_WAITOK|M_ZERO);
688 /* Check if port is a stacked lagg */
690 SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) {
691 if (ifp == sc_ptr->sc_ifp) {
695 (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
698 /* XXX disable stacking for the moment, its untested */
699 #ifdef LAGG_PORT_STACKING
700 lp->lp_flags |= LAGG_PORT_STACK;
701 if (lagg_port_checkstacking(sc_ptr) >=
706 (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
718 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ETHER_ADDR_LEN);
719 lp->lp_ifcapenable = ifp->if_capenable;
720 if (CK_SLIST_EMPTY(&sc->sc_ports)) {
721 bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
722 lagg_proto_lladdr(sc);
723 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
725 if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
727 lagg_setflags(lp, 1);
729 if (CK_SLIST_EMPTY(&sc->sc_ports))
732 /* Change the interface type */
733 lp->lp_iftype = ifp->if_type;
734 ifp->if_type = IFT_IEEE8023ADLAG;
736 lp->lp_ioctl = ifp->if_ioctl;
737 ifp->if_ioctl = lagg_port_ioctl;
738 lp->lp_output = ifp->if_output;
739 ifp->if_output = lagg_port_output;
741 /* Read port counters */
742 pval = lp->port_counters.val;
743 for (i = 0; i < IFCOUNTERS; i++, pval++)
744 *pval = ifp->if_get_counter(ifp, i);
747 * Insert into the list of ports.
748 * Keep ports sorted by if_index. It is handy, when configuration
749 * is predictable and `ifconfig laggN create ...` command
750 * will lead to the same result each time.
753 CK_SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) {
754 if (tlp->lp_ifp->if_index < ifp->if_index && (
755 CK_SLIST_NEXT(tlp, lp_entries) == NULL ||
756 ((struct lagg_port*)CK_SLIST_NEXT(tlp, lp_entries))->lp_ifp->if_index >
762 CK_SLIST_INSERT_AFTER(tlp, lp, lp_entries);
764 CK_SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries);
770 if ((error = lagg_proto_addport(sc, lp)) != 0) {
771 /* Remove the port, without calling pr_delport. */
772 lagg_port_destroy(lp, 0);
774 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
778 /* Update lagg capabilities */
779 lagg_capabilities(sc);
785 #ifdef LAGG_PORT_STACKING
787 lagg_port_checkstacking(struct lagg_softc *sc)
789 struct lagg_softc *sc_ptr;
790 struct lagg_port *lp;
793 LAGG_SXLOCK_ASSERT(sc);
794 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
795 if (lp->lp_flags & LAGG_PORT_STACK) {
796 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc;
797 m = MAX(m, lagg_port_checkstacking(sc_ptr));
806 lagg_port_destroy_cb(epoch_context_t ec)
808 struct lagg_port *lp;
811 lp = __containerof(ec, struct lagg_port, lp_epoch_ctx);
819 lagg_port_destroy(struct lagg_port *lp, int rundelport)
821 struct lagg_softc *sc = lp->lp_softc;
822 struct lagg_port *lp_ptr, *lp0;
823 struct ifnet *ifp = lp->lp_ifp;
824 uint64_t *pval, vdiff;
827 LAGG_XLOCK_ASSERT(sc);
830 lagg_proto_delport(sc, lp);
832 if (lp->lp_detaching == 0)
835 /* Restore interface */
836 ifp->if_type = lp->lp_iftype;
837 ifp->if_ioctl = lp->lp_ioctl;
838 ifp->if_output = lp->lp_output;
841 /* Update detached port counters */
842 pval = lp->port_counters.val;
843 for (i = 0; i < IFCOUNTERS; i++, pval++) {
844 vdiff = ifp->if_get_counter(ifp, i) - *pval;
845 sc->detached_counters.val[i] += vdiff;
848 /* Finally, remove the port from the lagg */
849 CK_SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries);
852 /* Update the primary interface */
853 if (lp == sc->sc_primary) {
854 uint8_t lladdr[ETHER_ADDR_LEN];
856 if ((lp0 = CK_SLIST_FIRST(&sc->sc_ports)) == NULL)
857 bzero(&lladdr, ETHER_ADDR_LEN);
859 bcopy(lp0->lp_lladdr, lladdr, ETHER_ADDR_LEN);
860 sc->sc_primary = lp0;
861 if (sc->sc_destroying == 0) {
862 bcopy(lladdr, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
863 lagg_proto_lladdr(sc);
864 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
868 * Update lladdr for each port (new primary needs update
869 * as well, to switch from old lladdr to its 'real' one)
871 CK_SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries)
872 if_setlladdr(lp_ptr->lp_ifp, lladdr, ETHER_ADDR_LEN);
876 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__);
878 if (lp->lp_detaching == 0) {
879 lagg_setflags(lp, 0);
880 lagg_setcaps(lp, lp->lp_ifcapenable);
881 if_setlladdr(ifp, lp->lp_lladdr, ETHER_ADDR_LEN);
885 * free port and release it's ifnet reference after a grace period has
888 epoch_call(net_epoch_preempt, &lp->lp_epoch_ctx, lagg_port_destroy_cb);
889 /* Update lagg capabilities */
890 lagg_capabilities(sc);
897 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
899 struct lagg_reqport *rp = (struct lagg_reqport *)data;
900 struct lagg_softc *sc;
901 struct lagg_port *lp = NULL;
904 /* Should be checked by the caller */
905 if (ifp->if_type != IFT_IEEE8023ADLAG ||
906 (lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL)
911 if (rp->rp_portname[0] == '\0' ||
912 ifunit(rp->rp_portname) != ifp) {
918 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) {
924 lagg_port2req(lp, rp);
929 if (lp->lp_ioctl == NULL) {
933 error = (*lp->lp_ioctl)(ifp, cmd, data);
937 /* Update lagg interface capabilities */
939 lagg_capabilities(sc);
941 VLAN_CAPABILITIES(sc->sc_ifp);
945 /* Do not allow the MTU to be changed once joined */
956 if (lp != NULL && lp->lp_ioctl != NULL)
957 return ((*lp->lp_ioctl)(ifp, cmd, data));
963 * Requests counter @cnt data.
965 * Counter value is calculated the following way:
966 * 1) for each port, sum difference between current and "initial" measurements.
967 * 2) add lagg logical interface counters.
968 * 3) add data from detached_counters array.
970 * We also do the following things on ports attach/detach:
971 * 1) On port attach we store all counters it has into port_counter array.
972 * 2) On port detach we add the different between "initial" and
973 * current counters data to detached_counters array.
976 lagg_get_counter(struct ifnet *ifp, ift_counter cnt)
978 struct lagg_softc *sc;
979 struct lagg_port *lp;
981 uint64_t newval, oldval, vsum;
983 /* Revise this when we've got non-generic counters. */
984 KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt));
986 sc = (struct lagg_softc *)ifp->if_softc;
990 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
991 /* Saved attached value */
992 oldval = lp->port_counters.val[cnt];
995 newval = lpifp->if_get_counter(lpifp, cnt);
996 /* Calculate diff and save new */
997 vsum += newval - oldval;
1002 * Add counter data which might be added by upper
1003 * layer protocols operating on logical interface.
1005 vsum += if_get_counter_default(ifp, cnt);
1008 * Add counter data from detached ports counters
1010 vsum += sc->detached_counters.val[cnt];
1017 * For direct output to child ports.
1020 lagg_port_output(struct ifnet *ifp, struct mbuf *m,
1021 const struct sockaddr *dst, struct route *ro)
1023 struct lagg_port *lp = ifp->if_lagg;
1025 switch (dst->sa_family) {
1026 case pseudo_AF_HDRCMPLT:
1028 return ((*lp->lp_output)(ifp, m, dst, ro));
1031 /* drop any other frames */
1037 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp)
1039 struct lagg_port *lp;
1040 struct lagg_softc *sc;
1042 if ((lp = ifp->if_lagg) == NULL)
1044 /* If the ifnet is just being renamed, don't do anything. */
1045 if (ifp->if_flags & IFF_RENAMING)
1051 lp->lp_detaching = 1;
1052 lagg_port_destroy(lp, 1);
1054 VLAN_CAPABILITIES(sc->sc_ifp);
1058 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp)
1060 struct lagg_softc *sc = lp->lp_softc;
1062 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname));
1063 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname));
1064 rp->rp_prio = lp->lp_prio;
1065 rp->rp_flags = lp->lp_flags;
1066 lagg_proto_portreq(sc, lp, &rp->rp_psc);
1068 /* Add protocol specific flags */
1069 switch (sc->sc_proto) {
1070 case LAGG_PROTO_FAILOVER:
1071 if (lp == sc->sc_primary)
1072 rp->rp_flags |= LAGG_PORT_MASTER;
1073 if (lp == lagg_link_active(sc, sc->sc_primary))
1074 rp->rp_flags |= LAGG_PORT_ACTIVE;
1077 case LAGG_PROTO_ROUNDROBIN:
1078 case LAGG_PROTO_LOADBALANCE:
1079 case LAGG_PROTO_BROADCAST:
1080 if (LAGG_PORTACTIVE(lp))
1081 rp->rp_flags |= LAGG_PORT_ACTIVE;
1084 case LAGG_PROTO_LACP:
1085 /* LACP has a different definition of active */
1086 if (lacp_isactive(lp))
1087 rp->rp_flags |= LAGG_PORT_ACTIVE;
1088 if (lacp_iscollecting(lp))
1089 rp->rp_flags |= LAGG_PORT_COLLECTING;
1090 if (lacp_isdistributing(lp))
1091 rp->rp_flags |= LAGG_PORT_DISTRIBUTING;
1098 lagg_init(void *xsc)
1100 struct lagg_softc *sc = (struct lagg_softc *)xsc;
1101 struct ifnet *ifp = sc->sc_ifp;
1102 struct lagg_port *lp;
1105 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1110 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1113 * Update the port lladdrs if needed.
1114 * This might be if_setlladdr() notification
1115 * that lladdr has been changed.
1117 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1118 if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp),
1119 ETHER_ADDR_LEN) != 0)
1120 if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ETHER_ADDR_LEN);
1123 lagg_proto_init(sc);
1129 lagg_stop(struct lagg_softc *sc)
1131 struct ifnet *ifp = sc->sc_ifp;
1133 LAGG_XLOCK_ASSERT(sc);
1135 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1138 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1140 lagg_proto_stop(sc);
1144 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1146 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1147 struct lagg_reqall *ra = (struct lagg_reqall *)data;
1148 struct lagg_reqopts *ro = (struct lagg_reqopts *)data;
1149 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf;
1150 struct lagg_reqflags *rf = (struct lagg_reqflags *)data;
1151 struct ifreq *ifr = (struct ifreq *)data;
1152 struct lagg_port *lp;
1154 struct thread *td = curthread;
1156 int count, buflen, len, error = 0;
1158 bzero(&rpbuf, sizeof(rpbuf));
1163 buflen = sc->sc_count * sizeof(struct lagg_reqport);
1164 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO);
1165 ra->ra_proto = sc->sc_proto;
1166 lagg_proto_request(sc, &ra->ra_psc);
1169 len = min(ra->ra_size, buflen);
1170 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1171 if (len < sizeof(rpbuf))
1174 lagg_port2req(lp, &rpbuf);
1175 memcpy(buf, &rpbuf, sizeof(rpbuf));
1177 buf += sizeof(rpbuf);
1178 len -= sizeof(rpbuf);
1181 ra->ra_ports = count;
1182 ra->ra_size = count * sizeof(rpbuf);
1183 error = copyout(outbuf, ra->ra_port, ra->ra_size);
1184 free(outbuf, M_TEMP);
1187 error = priv_check(td, PRIV_NET_LAGG);
1190 if (ra->ra_proto >= LAGG_PROTO_MAX) {
1191 error = EPROTONOSUPPORT;
1196 lagg_proto_detach(sc);
1197 LAGG_UNLOCK_ASSERT();
1198 lagg_proto_attach(sc, ra->ra_proto);
1203 ro->ro_opts = sc->sc_opts;
1204 if (sc->sc_proto == LAGG_PROTO_LACP) {
1205 struct lacp_softc *lsc;
1207 lsc = (struct lacp_softc *)sc->sc_psc;
1208 if (lsc->lsc_debug.lsc_tx_test != 0)
1209 ro->ro_opts |= LAGG_OPT_LACP_TXTEST;
1210 if (lsc->lsc_debug.lsc_rx_test != 0)
1211 ro->ro_opts |= LAGG_OPT_LACP_RXTEST;
1212 if (lsc->lsc_strict_mode != 0)
1213 ro->ro_opts |= LAGG_OPT_LACP_STRICT;
1214 if (lsc->lsc_fast_timeout != 0)
1215 ro->ro_opts |= LAGG_OPT_LACP_TIMEOUT;
1217 ro->ro_active = sc->sc_active;
1220 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1221 ro->ro_active += LAGG_PORTACTIVE(lp);
1223 ro->ro_bkt = sc->sc_bkt;
1224 ro->ro_flapping = sc->sc_flapping;
1225 ro->ro_flowid_shift = sc->flowid_shift;
1229 if (sc->sc_proto == LAGG_PROTO_ROUNDROBIN) {
1230 if (ro->ro_bkt == 0)
1231 sc->sc_bkt = 1; // Minimum 1 packet per iface.
1233 sc->sc_bkt = ro->ro_bkt;
1235 error = priv_check(td, PRIV_NET_LAGG);
1238 if (ro->ro_opts == 0)
1241 * Set options. LACP options are stored in sc->sc_psc,
1246 switch (ro->ro_opts) {
1247 case LAGG_OPT_USE_FLOWID:
1248 case -LAGG_OPT_USE_FLOWID:
1249 case LAGG_OPT_FLOWIDSHIFT:
1253 case LAGG_OPT_LACP_TXTEST:
1254 case -LAGG_OPT_LACP_TXTEST:
1255 case LAGG_OPT_LACP_RXTEST:
1256 case -LAGG_OPT_LACP_RXTEST:
1257 case LAGG_OPT_LACP_STRICT:
1258 case -LAGG_OPT_LACP_STRICT:
1259 case LAGG_OPT_LACP_TIMEOUT:
1260 case -LAGG_OPT_LACP_TIMEOUT:
1271 (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) {
1272 /* Invalid combination of options specified. */
1275 break; /* Return from SIOCSLAGGOPTS. */
1278 * Store new options into sc->sc_opts except for
1279 * FLOWIDSHIFT and LACP options.
1282 if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT)
1283 sc->flowid_shift = ro->ro_flowid_shift;
1284 else if (ro->ro_opts > 0)
1285 sc->sc_opts |= ro->ro_opts;
1287 sc->sc_opts &= ~ro->ro_opts;
1289 struct lacp_softc *lsc;
1290 struct lacp_port *lp;
1292 lsc = (struct lacp_softc *)sc->sc_psc;
1294 switch (ro->ro_opts) {
1295 case LAGG_OPT_LACP_TXTEST:
1296 lsc->lsc_debug.lsc_tx_test = 1;
1298 case -LAGG_OPT_LACP_TXTEST:
1299 lsc->lsc_debug.lsc_tx_test = 0;
1301 case LAGG_OPT_LACP_RXTEST:
1302 lsc->lsc_debug.lsc_rx_test = 1;
1304 case -LAGG_OPT_LACP_RXTEST:
1305 lsc->lsc_debug.lsc_rx_test = 0;
1307 case LAGG_OPT_LACP_STRICT:
1308 lsc->lsc_strict_mode = 1;
1310 case -LAGG_OPT_LACP_STRICT:
1311 lsc->lsc_strict_mode = 0;
1313 case LAGG_OPT_LACP_TIMEOUT:
1315 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1316 lp->lp_state |= LACP_STATE_TIMEOUT;
1318 lsc->lsc_fast_timeout = 1;
1320 case -LAGG_OPT_LACP_TIMEOUT:
1322 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1323 lp->lp_state &= ~LACP_STATE_TIMEOUT;
1325 lsc->lsc_fast_timeout = 0;
1331 case SIOCGLAGGFLAGS:
1334 if (sc->sc_flags & MBUF_HASHFLAG_L2)
1335 rf->rf_flags |= LAGG_F_HASHL2;
1336 if (sc->sc_flags & MBUF_HASHFLAG_L3)
1337 rf->rf_flags |= LAGG_F_HASHL3;
1338 if (sc->sc_flags & MBUF_HASHFLAG_L4)
1339 rf->rf_flags |= LAGG_F_HASHL4;
1343 error = priv_check(td, PRIV_NET_LAGG);
1346 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) {
1352 if (rf->rf_flags & LAGG_F_HASHL2)
1353 sc->sc_flags |= MBUF_HASHFLAG_L2;
1354 if (rf->rf_flags & LAGG_F_HASHL3)
1355 sc->sc_flags |= MBUF_HASHFLAG_L3;
1356 if (rf->rf_flags & LAGG_F_HASHL4)
1357 sc->sc_flags |= MBUF_HASHFLAG_L4;
1361 if (rp->rp_portname[0] == '\0' ||
1362 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1368 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1369 lp->lp_softc != sc) {
1376 lagg_port2req(lp, rp);
1381 error = priv_check(td, PRIV_NET_LAGG);
1384 if (rp->rp_portname[0] == '\0' ||
1385 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1391 * A laggport interface should not have inet6 address
1392 * because two interfaces with a valid link-local
1393 * scope zone must not be merged in any form. This
1394 * restriction is needed to prevent violation of
1395 * link-local scope zone. Attempts to add a laggport
1396 * interface which has inet6 addresses triggers
1397 * removal of all inet6 addresses on the member
1400 if (in6ifa_llaonifp(tpif)) {
1402 if_printf(sc->sc_ifp,
1403 "IPv6 addresses on %s have been removed "
1404 "before adding it as a member to prevent "
1405 "IPv6 address scope violation.\n",
1410 error = lagg_port_create(sc, tpif);
1413 VLAN_CAPABILITIES(ifp);
1415 case SIOCSLAGGDELPORT:
1416 error = priv_check(td, PRIV_NET_LAGG);
1419 if (rp->rp_portname[0] == '\0' ||
1420 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1426 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1427 lp->lp_softc != sc) {
1434 error = lagg_port_destroy(lp, 1);
1437 VLAN_CAPABILITIES(ifp);
1440 /* Set flags on ports too */
1442 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1443 lagg_setflags(lp, 1);
1446 if (!(ifp->if_flags & IFF_UP) &&
1447 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1449 * If interface is marked down and it is running,
1450 * then stop and disable it.
1454 } else if ((ifp->if_flags & IFF_UP) &&
1455 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1457 * If interface is marked up and it is stopped, then
1461 (*ifp->if_init)(sc);
1468 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1477 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
1482 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1483 if (lp->lp_ioctl != NULL)
1484 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1486 lagg_capabilities(sc);
1488 VLAN_CAPABILITIES(ifp);
1494 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1495 if (lp->lp_ioctl != NULL)
1496 error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1501 "failed to change MTU to %d on port %s, "
1502 "reverting all ports to original MTU (%d)\n",
1503 ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu);
1508 ifp->if_mtu = ifr->ifr_mtu;
1510 /* set every port back to the original MTU */
1511 ifr->ifr_mtu = ifp->if_mtu;
1512 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1513 if (lp->lp_ioctl != NULL)
1514 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1521 error = ether_ioctl(ifp, cmd, data);
1529 lagg_snd_tag_alloc(struct ifnet *ifp,
1530 union if_snd_tag_alloc_params *params,
1531 struct m_snd_tag **ppmt)
1533 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1534 struct lagg_port *lp;
1538 switch (sc->sc_proto) {
1539 case LAGG_PROTO_FAILOVER:
1540 lp = lagg_link_active(sc, sc->sc_primary);
1542 case LAGG_PROTO_LOADBALANCE:
1543 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1544 params->hdr.flowtype == M_HASHTYPE_NONE)
1545 return (EOPNOTSUPP);
1546 p = params->hdr.flowid >> sc->flowid_shift;
1548 lb = (struct lagg_lb *)sc->sc_psc;
1549 lp = lb->lb_ports[p];
1550 lp = lagg_link_active(sc, lp);
1552 case LAGG_PROTO_LACP:
1553 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1554 params->hdr.flowtype == M_HASHTYPE_NONE)
1555 return (EOPNOTSUPP);
1556 lp = lacp_select_tx_port_by_hash(sc, params->hdr.flowid);
1559 return (EOPNOTSUPP);
1562 return (EOPNOTSUPP);
1564 if (ifp == NULL || ifp->if_snd_tag_alloc == NULL ||
1565 (ifp->if_capenable & IFCAP_TXRTLMT) == 0)
1566 return (EOPNOTSUPP);
1568 /* forward allocation request */
1569 return (ifp->if_snd_tag_alloc(ifp, params, ppmt));
1574 lagg_setmulti(struct lagg_port *lp)
1576 struct lagg_softc *sc = lp->lp_softc;
1577 struct ifnet *ifp = lp->lp_ifp;
1578 struct ifnet *scifp = sc->sc_ifp;
1580 struct ifmultiaddr *ifma;
1583 IF_ADDR_WLOCK(scifp);
1584 CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) {
1585 if (ifma->ifma_addr->sa_family != AF_LINK)
1587 mc = malloc(sizeof(struct lagg_mc), M_DEVBUF, M_NOWAIT);
1589 IF_ADDR_WUNLOCK(scifp);
1592 bcopy(ifma->ifma_addr, &mc->mc_addr,
1593 ifma->ifma_addr->sa_len);
1594 mc->mc_addr.sdl_index = ifp->if_index;
1596 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries);
1598 IF_ADDR_WUNLOCK(scifp);
1599 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) {
1600 error = if_addmulti(ifp,
1601 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma);
1609 lagg_clrmulti(struct lagg_port *lp)
1613 LAGG_XLOCK_ASSERT(lp->lp_softc);
1614 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) {
1615 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries);
1616 if (mc->mc_ifma && lp->lp_detaching == 0)
1617 if_delmulti_ifma(mc->mc_ifma);
1624 lagg_setcaps(struct lagg_port *lp, int cap)
1628 if (lp->lp_ifp->if_capenable == cap)
1630 if (lp->lp_ioctl == NULL)
1632 ifr.ifr_reqcap = cap;
1633 return ((*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr));
1636 /* Handle a ref counted flag that should be set on the lagg port as well */
1638 lagg_setflag(struct lagg_port *lp, int flag, int status,
1639 int (*func)(struct ifnet *, int))
1641 struct lagg_softc *sc = lp->lp_softc;
1642 struct ifnet *scifp = sc->sc_ifp;
1643 struct ifnet *ifp = lp->lp_ifp;
1646 LAGG_XLOCK_ASSERT(sc);
1648 status = status ? (scifp->if_flags & flag) : 0;
1649 /* Now "status" contains the flag value or 0 */
1652 * See if recorded ports status is different from what
1653 * we want it to be. If it is, flip it. We record ports
1654 * status in lp_ifflags so that we won't clear ports flag
1655 * we haven't set. In fact, we don't clear or set ports
1656 * flags directly, but get or release references to them.
1657 * That's why we can be sure that recorded flags still are
1658 * in accord with actual ports flags.
1660 if (status != (lp->lp_ifflags & flag)) {
1661 error = (*func)(ifp, status);
1664 lp->lp_ifflags &= ~flag;
1665 lp->lp_ifflags |= status;
1671 * Handle IFF_* flags that require certain changes on the lagg port
1672 * if "status" is true, update ports flags respective to the lagg
1673 * if "status" is false, forcedly clear the flags set on port.
1676 lagg_setflags(struct lagg_port *lp, int status)
1680 for (i = 0; lagg_pflags[i].flag; i++) {
1681 error = lagg_setflag(lp, lagg_pflags[i].flag,
1682 status, lagg_pflags[i].func);
1690 lagg_transmit(struct ifnet *ifp, struct mbuf *m)
1692 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1696 /* We need a Tx algorithm and at least one port */
1697 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
1700 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1704 ETHER_BPF_MTAP(ifp, m);
1706 error = lagg_proto_start(sc, m);
1710 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1716 * The ifp->if_qflush entry point for lagg(4) is no-op.
1719 lagg_qflush(struct ifnet *ifp __unused)
1723 static struct mbuf *
1724 lagg_input(struct ifnet *ifp, struct mbuf *m)
1726 struct lagg_port *lp = ifp->if_lagg;
1727 struct lagg_softc *sc = lp->lp_softc;
1728 struct ifnet *scifp = sc->sc_ifp;
1731 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1732 lp->lp_detaching != 0 ||
1733 sc->sc_proto == LAGG_PROTO_NONE) {
1739 ETHER_BPF_MTAP(scifp, m);
1741 m = lagg_proto_input(sc, lp, m);
1742 if (m != NULL && (scifp->if_flags & IFF_MONITOR) != 0) {
1752 lagg_media_change(struct ifnet *ifp)
1754 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1756 if (sc->sc_ifflags & IFF_DEBUG)
1757 printf("%s\n", __func__);
1764 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1766 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1767 struct lagg_port *lp;
1769 imr->ifm_status = IFM_AVALID;
1770 imr->ifm_active = IFM_ETHER | IFM_AUTO;
1773 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1774 if (LAGG_PORTACTIVE(lp))
1775 imr->ifm_status |= IFM_ACTIVE;
1781 lagg_linkstate(struct lagg_softc *sc)
1783 struct lagg_port *lp;
1784 int new_link = LINK_STATE_DOWN;
1787 LAGG_XLOCK_ASSERT(sc);
1789 /* LACP handles link state itself */
1790 if (sc->sc_proto == LAGG_PROTO_LACP)
1793 /* Our link is considered up if at least one of our ports is active */
1795 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1796 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) {
1797 new_link = LINK_STATE_UP;
1802 if_link_state_change(sc->sc_ifp, new_link);
1804 /* Update if_baudrate to reflect the max possible speed */
1805 switch (sc->sc_proto) {
1806 case LAGG_PROTO_FAILOVER:
1807 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ?
1808 sc->sc_primary->lp_ifp->if_baudrate : 0;
1810 case LAGG_PROTO_ROUNDROBIN:
1811 case LAGG_PROTO_LOADBALANCE:
1812 case LAGG_PROTO_BROADCAST:
1815 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1816 speed += lp->lp_ifp->if_baudrate;
1818 sc->sc_ifp->if_baudrate = speed;
1820 case LAGG_PROTO_LACP:
1821 /* LACP updates if_baudrate itself */
1827 lagg_port_state(struct ifnet *ifp, int state)
1829 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg;
1830 struct lagg_softc *sc = NULL;
1839 lagg_proto_linkstate(sc, lp);
1844 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp)
1846 struct lagg_port *lp_next, *rval = NULL;
1847 struct epoch_tracker net_et;
1850 * Search a port which reports an active link state.
1855 if (LAGG_PORTACTIVE(lp)) {
1859 if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL &&
1860 LAGG_PORTACTIVE(lp_next)) {
1866 epoch_enter_preempt(net_epoch_preempt, &net_et);
1867 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
1868 if (LAGG_PORTACTIVE(lp_next)) {
1869 epoch_exit_preempt(net_epoch_preempt, &net_et);
1873 epoch_exit_preempt(net_epoch_preempt, &net_et);
1879 lagg_enqueue(struct ifnet *ifp, struct mbuf *m)
1882 return (ifp->if_transmit)(ifp, m);
1886 * Simple round robin aggregation
1889 lagg_rr_attach(struct lagg_softc *sc)
1892 sc->sc_bkt_count = sc->sc_bkt;
1896 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m)
1898 struct lagg_port *lp;
1901 if (sc->sc_bkt_count == 0 && sc->sc_bkt > 0)
1902 sc->sc_bkt_count = sc->sc_bkt;
1904 if (sc->sc_bkt > 0) {
1905 atomic_subtract_int(&sc->sc_bkt_count, 1);
1906 if (atomic_cmpset_int(&sc->sc_bkt_count, 0, sc->sc_bkt))
1907 p = atomic_fetchadd_32(&sc->sc_seq, 1);
1911 p = atomic_fetchadd_32(&sc->sc_seq, 1);
1914 lp = CK_SLIST_FIRST(&sc->sc_ports);
1917 lp = CK_SLIST_NEXT(lp, lp_entries);
1920 * Check the port's link state. This will return the next active
1921 * port if the link is down or the port is NULL.
1923 if ((lp = lagg_link_active(sc, lp)) == NULL) {
1929 return (lagg_enqueue(lp->lp_ifp, m));
1932 static struct mbuf *
1933 lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1935 struct ifnet *ifp = sc->sc_ifp;
1937 /* Just pass in the packet to our lagg device */
1938 m->m_pkthdr.rcvif = ifp;
1947 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m)
1949 int active_ports = 0;
1952 struct lagg_port *lp, *last = NULL;
1956 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1957 if (!LAGG_PORTACTIVE(lp))
1963 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
1970 ret = lagg_enqueue(last->lp_ifp, m0);
1982 if ((last = lagg_link_active(sc, last)) == NULL) {
1987 ret = lagg_enqueue(last->lp_ifp, m);
1998 lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2000 struct ifnet *ifp = sc->sc_ifp;
2002 /* Just pass in the packet to our lagg device */
2003 m->m_pkthdr.rcvif = ifp;
2011 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m)
2013 struct lagg_port *lp;
2015 /* Use the master port if active or the next available port */
2016 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) {
2022 return (lagg_enqueue(lp->lp_ifp, m));
2025 static struct mbuf *
2026 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2028 struct ifnet *ifp = sc->sc_ifp;
2029 struct lagg_port *tmp_tp;
2031 if (lp == sc->sc_primary || V_lagg_failover_rx_all) {
2032 m->m_pkthdr.rcvif = ifp;
2036 if (!LAGG_PORTACTIVE(sc->sc_primary)) {
2037 tmp_tp = lagg_link_active(sc, sc->sc_primary);
2039 * If tmp_tp is null, we've received a packet when all
2040 * our links are down. Weird, but process it anyways.
2042 if ((tmp_tp == NULL || tmp_tp == lp)) {
2043 m->m_pkthdr.rcvif = ifp;
2056 lagg_lb_attach(struct lagg_softc *sc)
2058 struct lagg_port *lp;
2061 LAGG_XLOCK_ASSERT(sc);
2062 lb = malloc(sizeof(struct lagg_lb), M_DEVBUF, M_WAITOK | M_ZERO);
2063 lb->lb_key = m_ether_tcpip_hash_init();
2066 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2067 lagg_lb_port_create(lp);
2071 lagg_lb_detach(struct lagg_softc *sc)
2075 lb = (struct lagg_lb *)sc->sc_psc;
2081 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp)
2083 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2084 struct lagg_port *lp_next;
2088 bzero(&lb->lb_ports, sizeof(lb->lb_ports));
2090 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
2093 if (i >= LAGG_MAX_PORTS) {
2097 if (sc->sc_ifflags & IFF_DEBUG)
2098 printf("%s: port %s at index %d\n",
2099 sc->sc_ifname, lp_next->lp_ifp->if_xname, i);
2100 lb->lb_ports[i++] = lp_next;
2108 lagg_lb_port_create(struct lagg_port *lp)
2110 struct lagg_softc *sc = lp->lp_softc;
2111 return (lagg_lb_porttable(sc, NULL));
2115 lagg_lb_port_destroy(struct lagg_port *lp)
2117 struct lagg_softc *sc = lp->lp_softc;
2118 lagg_lb_porttable(sc, lp);
2122 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m)
2124 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2125 struct lagg_port *lp = NULL;
2128 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) &&
2129 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE)
2130 p = m->m_pkthdr.flowid >> sc->flowid_shift;
2132 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key);
2134 lp = lb->lb_ports[p];
2137 * Check the port's link state. This will return the next active
2138 * port if the link is down or the port is NULL.
2140 if ((lp = lagg_link_active(sc, lp)) == NULL) {
2146 return (lagg_enqueue(lp->lp_ifp, m));
2149 static struct mbuf *
2150 lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2152 struct ifnet *ifp = sc->sc_ifp;
2154 /* Just pass in the packet to our lagg device */
2155 m->m_pkthdr.rcvif = ifp;
2164 lagg_lacp_attach(struct lagg_softc *sc)
2166 struct lagg_port *lp;
2169 LAGG_XLOCK_ASSERT(sc);
2170 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2171 lacp_port_create(lp);
2175 lagg_lacp_detach(struct lagg_softc *sc)
2177 struct lagg_port *lp;
2180 LAGG_XLOCK_ASSERT(sc);
2181 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2182 lacp_port_destroy(lp);
2190 lagg_lacp_lladdr(struct lagg_softc *sc)
2192 struct lagg_port *lp;
2194 LAGG_SXLOCK_ASSERT(sc);
2196 /* purge all the lacp ports */
2197 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2198 lacp_port_destroy(lp);
2200 /* add them back in */
2201 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2202 lacp_port_create(lp);
2206 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
2208 struct lagg_port *lp;
2210 lp = lacp_select_tx_port(sc, m);
2217 return (lagg_enqueue(lp->lp_ifp, m));
2220 static struct mbuf *
2221 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2223 struct ifnet *ifp = sc->sc_ifp;
2224 struct ether_header *eh;
2227 eh = mtod(m, struct ether_header *);
2228 etype = ntohs(eh->ether_type);
2230 /* Tap off LACP control messages */
2231 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
2232 m = lacp_input(lp, m);
2238 * If the port is not collecting or not in the active aggregator then
2241 if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) {
2246 m->m_pkthdr.rcvif = ifp;