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 /* Special flags we should propagate to the lagg ports. */
79 int (*func)(struct ifnet *, int);
81 {IFF_PROMISC, ifpromisc},
82 {IFF_ALLMULTI, if_allmulti},
86 VNET_DEFINE(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */
87 #define V_lagg_list VNET(lagg_list)
88 static VNET_DEFINE(struct mtx, lagg_list_mtx);
89 #define V_lagg_list_mtx VNET(lagg_list_mtx)
90 #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \
91 "if_lagg list", NULL, MTX_DEF)
92 #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx)
93 #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx)
94 #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_lagg_list_mtx)
95 eventhandler_tag lagg_detach_cookie = NULL;
97 static int lagg_clone_create(struct if_clone *, int, caddr_t);
98 static void lagg_clone_destroy(struct ifnet *);
99 static VNET_DEFINE(struct if_clone *, lagg_cloner);
100 #define V_lagg_cloner VNET(lagg_cloner)
101 static const char laggname[] = "lagg";
103 static void lagg_capabilities(struct lagg_softc *);
104 static int lagg_port_create(struct lagg_softc *, struct ifnet *);
105 static int lagg_port_destroy(struct lagg_port *, int);
106 static struct mbuf *lagg_input(struct ifnet *, struct mbuf *);
107 static void lagg_linkstate(struct lagg_softc *);
108 static void lagg_port_state(struct ifnet *, int);
109 static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t);
110 static int lagg_port_output(struct ifnet *, struct mbuf *,
111 const struct sockaddr *, struct route *);
112 static void lagg_port_ifdetach(void *arg __unused, struct ifnet *);
113 #ifdef LAGG_PORT_STACKING
114 static int lagg_port_checkstacking(struct lagg_softc *);
116 static void lagg_port2req(struct lagg_port *, struct lagg_reqport *);
117 static void lagg_init(void *);
118 static void lagg_stop(struct lagg_softc *);
119 static int lagg_ioctl(struct ifnet *, u_long, caddr_t);
121 static int lagg_snd_tag_alloc(struct ifnet *,
122 union if_snd_tag_alloc_params *,
123 struct m_snd_tag **);
125 static int lagg_setmulti(struct lagg_port *);
126 static int lagg_clrmulti(struct lagg_port *);
127 static int lagg_setcaps(struct lagg_port *, int cap);
128 static int lagg_setflag(struct lagg_port *, int, int,
129 int (*func)(struct ifnet *, int));
130 static int lagg_setflags(struct lagg_port *, int status);
131 static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt);
132 static int lagg_transmit(struct ifnet *, struct mbuf *);
133 static void lagg_qflush(struct ifnet *);
134 static int lagg_media_change(struct ifnet *);
135 static void lagg_media_status(struct ifnet *, struct ifmediareq *);
136 static struct lagg_port *lagg_link_active(struct lagg_softc *,
139 /* Simple round robin */
140 static void lagg_rr_attach(struct lagg_softc *);
141 static int lagg_rr_start(struct lagg_softc *, struct mbuf *);
142 static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *,
145 /* Active failover */
146 static int lagg_fail_start(struct lagg_softc *, struct mbuf *);
147 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *,
151 static void lagg_lb_attach(struct lagg_softc *);
152 static void lagg_lb_detach(struct lagg_softc *);
153 static int lagg_lb_port_create(struct lagg_port *);
154 static void lagg_lb_port_destroy(struct lagg_port *);
155 static int lagg_lb_start(struct lagg_softc *, struct mbuf *);
156 static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *,
158 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *);
161 static int lagg_bcast_start(struct lagg_softc *, struct mbuf *);
162 static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *,
166 static void lagg_lacp_attach(struct lagg_softc *);
167 static void lagg_lacp_detach(struct lagg_softc *);
168 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *);
169 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *,
171 static void lagg_lacp_lladdr(struct lagg_softc *);
173 /* lagg protocol table */
174 static const struct lagg_proto {
176 void (*pr_attach)(struct lagg_softc *);
177 void (*pr_detach)(struct lagg_softc *);
178 int (*pr_start)(struct lagg_softc *, struct mbuf *);
179 struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *,
181 int (*pr_addport)(struct lagg_port *);
182 void (*pr_delport)(struct lagg_port *);
183 void (*pr_linkstate)(struct lagg_port *);
184 void (*pr_init)(struct lagg_softc *);
185 void (*pr_stop)(struct lagg_softc *);
186 void (*pr_lladdr)(struct lagg_softc *);
187 void (*pr_request)(struct lagg_softc *, void *);
188 void (*pr_portreq)(struct lagg_port *, void *);
191 .pr_num = LAGG_PROTO_NONE
194 .pr_num = LAGG_PROTO_ROUNDROBIN,
195 .pr_attach = lagg_rr_attach,
196 .pr_start = lagg_rr_start,
197 .pr_input = lagg_rr_input,
200 .pr_num = LAGG_PROTO_FAILOVER,
201 .pr_start = lagg_fail_start,
202 .pr_input = lagg_fail_input,
205 .pr_num = LAGG_PROTO_LOADBALANCE,
206 .pr_attach = lagg_lb_attach,
207 .pr_detach = lagg_lb_detach,
208 .pr_start = lagg_lb_start,
209 .pr_input = lagg_lb_input,
210 .pr_addport = lagg_lb_port_create,
211 .pr_delport = lagg_lb_port_destroy,
214 .pr_num = LAGG_PROTO_LACP,
215 .pr_attach = lagg_lacp_attach,
216 .pr_detach = lagg_lacp_detach,
217 .pr_start = lagg_lacp_start,
218 .pr_input = lagg_lacp_input,
219 .pr_addport = lacp_port_create,
220 .pr_delport = lacp_port_destroy,
221 .pr_linkstate = lacp_linkstate,
222 .pr_init = lacp_init,
223 .pr_stop = lacp_stop,
224 .pr_lladdr = lagg_lacp_lladdr,
225 .pr_request = lacp_req,
226 .pr_portreq = lacp_portreq,
229 .pr_num = LAGG_PROTO_BROADCAST,
230 .pr_start = lagg_bcast_start,
231 .pr_input = lagg_bcast_input,
235 SYSCTL_DECL(_net_link);
236 SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW, 0,
239 /* Allow input on any failover links */
240 static VNET_DEFINE(int, lagg_failover_rx_all);
241 #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all)
242 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET,
243 &VNET_NAME(lagg_failover_rx_all), 0,
244 "Accept input from any interface in a failover lagg");
246 /* Default value for using flowid */
247 static VNET_DEFINE(int, def_use_flowid) = 1;
248 #define V_def_use_flowid VNET(def_use_flowid)
249 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN,
250 &VNET_NAME(def_use_flowid), 0,
251 "Default setting for using flow id for load sharing");
253 /* Default value for flowid shift */
254 static VNET_DEFINE(int, def_flowid_shift) = 16;
255 #define V_def_flowid_shift VNET(def_flowid_shift)
256 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN,
257 &VNET_NAME(def_flowid_shift), 0,
258 "Default setting for flowid shift for load sharing");
261 vnet_lagg_init(const void *unused __unused)
264 LAGG_LIST_LOCK_INIT();
265 SLIST_INIT(&V_lagg_list);
266 V_lagg_cloner = if_clone_simple(laggname, lagg_clone_create,
267 lagg_clone_destroy, 0);
269 VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
270 vnet_lagg_init, NULL);
273 vnet_lagg_uninit(const void *unused __unused)
276 if_clone_detach(V_lagg_cloner);
277 LAGG_LIST_LOCK_DESTROY();
279 VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY,
280 vnet_lagg_uninit, NULL);
283 lagg_modevent(module_t mod, int type, void *data)
288 lagg_input_p = lagg_input;
289 lagg_linkstate_p = lagg_port_state;
290 lagg_detach_cookie = EVENTHANDLER_REGISTER(
291 ifnet_departure_event, lagg_port_ifdetach, NULL,
292 EVENTHANDLER_PRI_ANY);
295 EVENTHANDLER_DEREGISTER(ifnet_departure_event,
298 lagg_linkstate_p = NULL;
306 static moduledata_t lagg_mod = {
312 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
313 MODULE_VERSION(if_lagg, 1);
316 lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr)
319 LAGG_XLOCK_ASSERT(sc);
320 KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto",
323 if (sc->sc_ifflags & IFF_DEBUG)
324 if_printf(sc->sc_ifp, "using proto %u\n", pr);
326 if (lagg_protos[pr].pr_attach != NULL)
327 lagg_protos[pr].pr_attach(sc);
332 lagg_proto_detach(struct lagg_softc *sc)
336 LAGG_XLOCK_ASSERT(sc);
337 LAGG_WLOCK_ASSERT(sc);
339 sc->sc_proto = LAGG_PROTO_NONE;
341 if (lagg_protos[pr].pr_detach != NULL)
342 lagg_protos[pr].pr_detach(sc);
348 lagg_proto_start(struct lagg_softc *sc, struct mbuf *m)
351 return (lagg_protos[sc->sc_proto].pr_start(sc, m));
355 lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
358 return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m));
362 lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp)
365 if (lagg_protos[sc->sc_proto].pr_addport == NULL)
368 return (lagg_protos[sc->sc_proto].pr_addport(lp));
372 lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp)
375 if (lagg_protos[sc->sc_proto].pr_delport != NULL)
376 lagg_protos[sc->sc_proto].pr_delport(lp);
380 lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp)
383 if (lagg_protos[sc->sc_proto].pr_linkstate != NULL)
384 lagg_protos[sc->sc_proto].pr_linkstate(lp);
388 lagg_proto_init(struct lagg_softc *sc)
391 if (lagg_protos[sc->sc_proto].pr_init != NULL)
392 lagg_protos[sc->sc_proto].pr_init(sc);
396 lagg_proto_stop(struct lagg_softc *sc)
399 if (lagg_protos[sc->sc_proto].pr_stop != NULL)
400 lagg_protos[sc->sc_proto].pr_stop(sc);
404 lagg_proto_lladdr(struct lagg_softc *sc)
407 if (lagg_protos[sc->sc_proto].pr_lladdr != NULL)
408 lagg_protos[sc->sc_proto].pr_lladdr(sc);
412 lagg_proto_request(struct lagg_softc *sc, void *v)
415 if (lagg_protos[sc->sc_proto].pr_request != NULL)
416 lagg_protos[sc->sc_proto].pr_request(sc, v);
420 lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v)
423 if (lagg_protos[sc->sc_proto].pr_portreq != NULL)
424 lagg_protos[sc->sc_proto].pr_portreq(lp, v);
428 * This routine is run via an vlan
432 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
434 struct lagg_softc *sc = ifp->if_softc;
435 struct lagg_port *lp;
437 if (ifp->if_softc != arg) /* Not our event */
441 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
442 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
447 * This routine is run via an vlan
451 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
453 struct lagg_softc *sc = ifp->if_softc;
454 struct lagg_port *lp;
456 if (ifp->if_softc != arg) /* Not our event */
460 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
461 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
466 lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
468 struct lagg_softc *sc;
470 static const u_char eaddr[6]; /* 00:00:00:00:00:00 */
472 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
473 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
482 if (V_def_use_flowid)
483 sc->sc_opts |= LAGG_OPT_USE_FLOWID;
484 sc->flowid_shift = V_def_flowid_shift;
486 /* Hash all layers by default */
487 sc->sc_flags = MBUF_HASHFLAG_L2|MBUF_HASHFLAG_L3|MBUF_HASHFLAG_L4;
489 lagg_proto_attach(sc, LAGG_PROTO_DEFAULT);
491 SLIST_INIT(&sc->sc_ports);
493 /* Initialise pseudo media types */
494 ifmedia_init(&sc->sc_media, 0, lagg_media_change,
496 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
497 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
499 if_initname(ifp, laggname, unit);
501 ifp->if_transmit = lagg_transmit;
502 ifp->if_qflush = lagg_qflush;
503 ifp->if_init = lagg_init;
504 ifp->if_ioctl = lagg_ioctl;
505 ifp->if_get_counter = lagg_get_counter;
506 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
508 ifp->if_snd_tag_alloc = lagg_snd_tag_alloc;
509 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS | IFCAP_TXRTLMT;
511 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS;
515 * Attach as an ordinary ethernet device, children will be attached
516 * as special device IFT_IEEE8023ADLAG.
518 ether_ifattach(ifp, eaddr);
520 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
521 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
522 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
523 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
525 /* Insert into the global list of laggs */
527 SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries);
535 lagg_clone_destroy(struct ifnet *ifp)
537 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
538 struct lagg_port *lp;
541 sc->sc_destroying = 1;
543 ifp->if_flags &= ~IFF_UP;
545 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
546 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
548 /* Shutdown and remove lagg ports */
549 while ((lp = SLIST_FIRST(&sc->sc_ports)) != NULL)
550 lagg_port_destroy(lp, 1);
552 /* Unhook the aggregation protocol */
554 lagg_proto_detach(sc);
555 LAGG_UNLOCK_ASSERT(sc);
558 ifmedia_removeall(&sc->sc_media);
563 SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries);
567 LAGG_LOCK_DESTROY(sc);
572 lagg_capabilities(struct lagg_softc *sc)
574 struct lagg_port *lp;
575 int cap = ~0, ena = ~0;
577 struct ifnet_hw_tsomax hw_tsomax;
579 LAGG_XLOCK_ASSERT(sc);
581 memset(&hw_tsomax, 0, sizeof(hw_tsomax));
583 /* Get capabilities from the lagg ports */
584 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
585 cap &= lp->lp_ifp->if_capabilities;
586 ena &= lp->lp_ifp->if_capenable;
587 hwa &= lp->lp_ifp->if_hwassist;
588 if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax);
590 cap = (cap == ~0 ? 0 : cap);
591 ena = (ena == ~0 ? 0 : ena);
592 hwa = (hwa == ~0 ? 0 : hwa);
594 if (sc->sc_ifp->if_capabilities != cap ||
595 sc->sc_ifp->if_capenable != ena ||
596 sc->sc_ifp->if_hwassist != hwa ||
597 if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) {
598 sc->sc_ifp->if_capabilities = cap;
599 sc->sc_ifp->if_capenable = ena;
600 sc->sc_ifp->if_hwassist = hwa;
601 getmicrotime(&sc->sc_ifp->if_lastchange);
603 if (sc->sc_ifflags & IFF_DEBUG)
604 if_printf(sc->sc_ifp,
605 "capabilities 0x%08x enabled 0x%08x\n", cap, ena);
608 /* Apply unified capabilities back to the lagg ports. */
609 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
610 lagg_setcaps(lp, ena);
614 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp)
616 struct lagg_softc *sc_ptr;
617 struct lagg_port *lp, *tlp;
621 LAGG_XLOCK_ASSERT(sc);
623 /* Limit the maximal number of lagg ports */
624 if (sc->sc_count >= LAGG_MAX_PORTS)
627 /* Check if port has already been associated to a lagg */
628 if (ifp->if_lagg != NULL) {
629 /* Port is already in the current lagg? */
630 lp = (struct lagg_port *)ifp->if_lagg;
631 if (lp->lp_softc == sc)
636 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */
637 if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN)
638 return (EPROTONOSUPPORT);
640 /* Allow the first Ethernet member to define the MTU */
641 if (SLIST_EMPTY(&sc->sc_ports))
642 sc->sc_ifp->if_mtu = ifp->if_mtu;
643 else if (sc->sc_ifp->if_mtu != ifp->if_mtu) {
644 if_printf(sc->sc_ifp, "invalid MTU for %s\n",
649 lp = malloc(sizeof(struct lagg_port), M_DEVBUF, M_WAITOK|M_ZERO);
652 /* Check if port is a stacked lagg */
654 SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) {
655 if (ifp == sc_ptr->sc_ifp) {
659 /* XXX disable stacking for the moment, its untested */
660 #ifdef LAGG_PORT_STACKING
661 lp->lp_flags |= LAGG_PORT_STACK;
662 if (lagg_port_checkstacking(sc_ptr) >=
676 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ETHER_ADDR_LEN);
677 lp->lp_ifcapenable = ifp->if_capenable;
678 if (SLIST_EMPTY(&sc->sc_ports)) {
680 bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
681 lagg_proto_lladdr(sc);
683 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
685 if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
687 lagg_setflags(lp, 1);
690 if (SLIST_EMPTY(&sc->sc_ports))
693 /* Change the interface type */
694 lp->lp_iftype = ifp->if_type;
695 ifp->if_type = IFT_IEEE8023ADLAG;
697 lp->lp_ioctl = ifp->if_ioctl;
698 ifp->if_ioctl = lagg_port_ioctl;
699 lp->lp_output = ifp->if_output;
700 ifp->if_output = lagg_port_output;
702 /* Read port counters */
703 pval = lp->port_counters.val;
704 for (i = 0; i < IFCOUNTERS; i++, pval++)
705 *pval = ifp->if_get_counter(ifp, i);
708 * Insert into the list of ports.
709 * Keep ports sorted by if_index. It is handy, when configuration
710 * is predictable and `ifconfig laggN create ...` command
711 * will lead to the same result each time.
713 SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) {
714 if (tlp->lp_ifp->if_index < ifp->if_index && (
715 SLIST_NEXT(tlp, lp_entries) == NULL ||
716 SLIST_NEXT(tlp, lp_entries)->lp_ifp->if_index >
721 SLIST_INSERT_AFTER(tlp, lp, lp_entries);
723 SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries);
728 if ((error = lagg_proto_addport(sc, lp)) != 0) {
729 /* Remove the port, without calling pr_delport. */
730 lagg_port_destroy(lp, 0);
731 LAGG_UNLOCK_ASSERT(sc);
737 /* Update lagg capabilities */
738 lagg_capabilities(sc);
744 #ifdef LAGG_PORT_STACKING
746 lagg_port_checkstacking(struct lagg_softc *sc)
748 struct lagg_softc *sc_ptr;
749 struct lagg_port *lp;
752 LAGG_SXLOCK_ASSERT(sc);
753 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
754 if (lp->lp_flags & LAGG_PORT_STACK) {
755 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc;
756 m = MAX(m, lagg_port_checkstacking(sc_ptr));
765 lagg_port_destroy(struct lagg_port *lp, int rundelport)
767 struct lagg_softc *sc = lp->lp_softc;
768 struct lagg_port *lp_ptr, *lp0;
769 struct ifnet *ifp = lp->lp_ifp;
770 uint64_t *pval, vdiff;
773 LAGG_XLOCK_ASSERT(sc);
777 lagg_proto_delport(sc, lp);
779 LAGG_WLOCK_ASSERT(sc);
781 if (lp->lp_detaching == 0)
784 /* Restore interface */
785 ifp->if_type = lp->lp_iftype;
786 ifp->if_ioctl = lp->lp_ioctl;
787 ifp->if_output = lp->lp_output;
790 /* Update detached port counters */
791 pval = lp->port_counters.val;
792 for (i = 0; i < IFCOUNTERS; i++, pval++) {
793 vdiff = ifp->if_get_counter(ifp, i) - *pval;
794 sc->detached_counters.val[i] += vdiff;
797 /* Finally, remove the port from the lagg */
798 SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries);
801 /* Update the primary interface */
802 if (lp == sc->sc_primary) {
803 uint8_t lladdr[ETHER_ADDR_LEN];
805 if ((lp0 = SLIST_FIRST(&sc->sc_ports)) == NULL)
806 bzero(&lladdr, ETHER_ADDR_LEN);
808 bcopy(lp0->lp_lladdr, lladdr, ETHER_ADDR_LEN);
809 sc->sc_primary = lp0;
810 if (sc->sc_destroying == 0) {
811 bcopy(lladdr, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
812 lagg_proto_lladdr(sc);
814 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
819 * Update lladdr for each port (new primary needs update
820 * as well, to switch from old lladdr to its 'real' one)
822 SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries)
823 if_setlladdr(lp_ptr->lp_ifp, lladdr, ETHER_ADDR_LEN);
828 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__);
830 if (lp->lp_detaching == 0) {
831 lagg_setflags(lp, 0);
832 lagg_setcaps(lp, lp->lp_ifcapenable);
833 if_setlladdr(ifp, lp->lp_lladdr, ETHER_ADDR_LEN);
839 /* Update lagg capabilities */
840 lagg_capabilities(sc);
847 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
849 struct lagg_reqport *rp = (struct lagg_reqport *)data;
850 struct lagg_softc *sc;
851 struct lagg_port *lp = NULL;
854 /* Should be checked by the caller */
855 if (ifp->if_type != IFT_IEEE8023ADLAG ||
856 (lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL)
861 if (rp->rp_portname[0] == '\0' ||
862 ifunit(rp->rp_portname) != ifp) {
868 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) {
874 lagg_port2req(lp, rp);
879 if (lp->lp_ioctl == NULL) {
883 error = (*lp->lp_ioctl)(ifp, cmd, data);
887 /* Update lagg interface capabilities */
889 lagg_capabilities(sc);
894 /* Do not allow the MTU to be changed once joined */
905 if (lp != NULL && lp->lp_ioctl != NULL)
906 return ((*lp->lp_ioctl)(ifp, cmd, data));
912 * Requests counter @cnt data.
914 * Counter value is calculated the following way:
915 * 1) for each port, sum difference between current and "initial" measurements.
916 * 2) add lagg logical interface counters.
917 * 3) add data from detached_counters array.
919 * We also do the following things on ports attach/detach:
920 * 1) On port attach we store all counters it has into port_counter array.
921 * 2) On port detach we add the different between "initial" and
922 * current counters data to detached_counters array.
925 lagg_get_counter(struct ifnet *ifp, ift_counter cnt)
927 struct lagg_softc *sc;
928 struct lagg_port *lp;
930 struct rm_priotracker tracker;
931 uint64_t newval, oldval, vsum;
933 /* Revise this when we've got non-generic counters. */
934 KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt));
936 sc = (struct lagg_softc *)ifp->if_softc;
937 LAGG_RLOCK(sc, &tracker);
940 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
941 /* Saved attached value */
942 oldval = lp->port_counters.val[cnt];
945 newval = lpifp->if_get_counter(lpifp, cnt);
946 /* Calculate diff and save new */
947 vsum += newval - oldval;
951 * Add counter data which might be added by upper
952 * layer protocols operating on logical interface.
954 vsum += if_get_counter_default(ifp, cnt);
957 * Add counter data from detached ports counters
959 vsum += sc->detached_counters.val[cnt];
961 LAGG_RUNLOCK(sc, &tracker);
967 * For direct output to child ports.
970 lagg_port_output(struct ifnet *ifp, struct mbuf *m,
971 const struct sockaddr *dst, struct route *ro)
973 struct lagg_port *lp = ifp->if_lagg;
975 switch (dst->sa_family) {
976 case pseudo_AF_HDRCMPLT:
978 return ((*lp->lp_output)(ifp, m, dst, ro));
981 /* drop any other frames */
987 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp)
989 struct lagg_port *lp;
990 struct lagg_softc *sc;
992 if ((lp = ifp->if_lagg) == NULL)
994 /* If the ifnet is just being renamed, don't do anything. */
995 if (ifp->if_flags & IFF_RENAMING)
1001 lp->lp_detaching = 1;
1002 lagg_port_destroy(lp, 1);
1007 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp)
1009 struct lagg_softc *sc = lp->lp_softc;
1011 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname));
1012 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname));
1013 rp->rp_prio = lp->lp_prio;
1014 rp->rp_flags = lp->lp_flags;
1015 lagg_proto_portreq(sc, lp, &rp->rp_psc);
1017 /* Add protocol specific flags */
1018 switch (sc->sc_proto) {
1019 case LAGG_PROTO_FAILOVER:
1020 if (lp == sc->sc_primary)
1021 rp->rp_flags |= LAGG_PORT_MASTER;
1022 if (lp == lagg_link_active(sc, sc->sc_primary))
1023 rp->rp_flags |= LAGG_PORT_ACTIVE;
1026 case LAGG_PROTO_ROUNDROBIN:
1027 case LAGG_PROTO_LOADBALANCE:
1028 case LAGG_PROTO_BROADCAST:
1029 if (LAGG_PORTACTIVE(lp))
1030 rp->rp_flags |= LAGG_PORT_ACTIVE;
1033 case LAGG_PROTO_LACP:
1034 /* LACP has a different definition of active */
1035 if (lacp_isactive(lp))
1036 rp->rp_flags |= LAGG_PORT_ACTIVE;
1037 if (lacp_iscollecting(lp))
1038 rp->rp_flags |= LAGG_PORT_COLLECTING;
1039 if (lacp_isdistributing(lp))
1040 rp->rp_flags |= LAGG_PORT_DISTRIBUTING;
1047 lagg_init(void *xsc)
1049 struct lagg_softc *sc = (struct lagg_softc *)xsc;
1050 struct ifnet *ifp = sc->sc_ifp;
1051 struct lagg_port *lp;
1054 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1059 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1062 * Update the port lladdrs if needed.
1063 * This might be if_setlladdr() notification
1064 * that lladdr has been changed.
1066 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1067 if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp),
1068 ETHER_ADDR_LEN) != 0)
1069 if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ETHER_ADDR_LEN);
1072 lagg_proto_init(sc);
1078 lagg_stop(struct lagg_softc *sc)
1080 struct ifnet *ifp = sc->sc_ifp;
1082 LAGG_XLOCK_ASSERT(sc);
1084 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1087 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1089 lagg_proto_stop(sc);
1093 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1095 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1096 struct lagg_reqall *ra = (struct lagg_reqall *)data;
1097 struct lagg_reqopts *ro = (struct lagg_reqopts *)data;
1098 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf;
1099 struct lagg_reqflags *rf = (struct lagg_reqflags *)data;
1100 struct ifreq *ifr = (struct ifreq *)data;
1101 struct lagg_port *lp;
1103 struct thread *td = curthread;
1105 int count, buflen, len, error = 0;
1107 bzero(&rpbuf, sizeof(rpbuf));
1112 buflen = sc->sc_count * sizeof(struct lagg_reqport);
1113 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO);
1114 ra->ra_proto = sc->sc_proto;
1115 lagg_proto_request(sc, &ra->ra_psc);
1118 len = min(ra->ra_size, buflen);
1119 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1120 if (len < sizeof(rpbuf))
1123 lagg_port2req(lp, &rpbuf);
1124 memcpy(buf, &rpbuf, sizeof(rpbuf));
1126 buf += sizeof(rpbuf);
1127 len -= sizeof(rpbuf);
1130 ra->ra_ports = count;
1131 ra->ra_size = count * sizeof(rpbuf);
1132 error = copyout(outbuf, ra->ra_port, ra->ra_size);
1133 free(outbuf, M_TEMP);
1136 error = priv_check(td, PRIV_NET_LAGG);
1139 if (ra->ra_proto >= LAGG_PROTO_MAX) {
1140 error = EPROTONOSUPPORT;
1146 lagg_proto_detach(sc);
1147 LAGG_UNLOCK_ASSERT(sc);
1148 lagg_proto_attach(sc, ra->ra_proto);
1153 ro->ro_opts = sc->sc_opts;
1154 if (sc->sc_proto == LAGG_PROTO_LACP) {
1155 struct lacp_softc *lsc;
1157 lsc = (struct lacp_softc *)sc->sc_psc;
1158 if (lsc->lsc_debug.lsc_tx_test != 0)
1159 ro->ro_opts |= LAGG_OPT_LACP_TXTEST;
1160 if (lsc->lsc_debug.lsc_rx_test != 0)
1161 ro->ro_opts |= LAGG_OPT_LACP_RXTEST;
1162 if (lsc->lsc_strict_mode != 0)
1163 ro->ro_opts |= LAGG_OPT_LACP_STRICT;
1164 if (lsc->lsc_fast_timeout != 0)
1165 ro->ro_opts |= LAGG_OPT_LACP_TIMEOUT;
1167 ro->ro_active = sc->sc_active;
1170 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1171 ro->ro_active += LAGG_PORTACTIVE(lp);
1173 ro->ro_bkt = sc->sc_bkt;
1174 ro->ro_flapping = sc->sc_flapping;
1175 ro->ro_flowid_shift = sc->flowid_shift;
1179 if (sc->sc_proto == LAGG_PROTO_ROUNDROBIN) {
1180 if (ro->ro_bkt == 0)
1181 sc->sc_bkt = 1; // Minimum 1 packet per iface.
1183 sc->sc_bkt = ro->ro_bkt;
1185 error = priv_check(td, PRIV_NET_LAGG);
1188 if (ro->ro_opts == 0)
1191 * Set options. LACP options are stored in sc->sc_psc,
1196 switch (ro->ro_opts) {
1197 case LAGG_OPT_USE_FLOWID:
1198 case -LAGG_OPT_USE_FLOWID:
1199 case LAGG_OPT_FLOWIDSHIFT:
1203 case LAGG_OPT_LACP_TXTEST:
1204 case -LAGG_OPT_LACP_TXTEST:
1205 case LAGG_OPT_LACP_RXTEST:
1206 case -LAGG_OPT_LACP_RXTEST:
1207 case LAGG_OPT_LACP_STRICT:
1208 case -LAGG_OPT_LACP_STRICT:
1209 case LAGG_OPT_LACP_TIMEOUT:
1210 case -LAGG_OPT_LACP_TIMEOUT:
1221 (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) {
1222 /* Invalid combination of options specified. */
1225 break; /* Return from SIOCSLAGGOPTS. */
1228 * Store new options into sc->sc_opts except for
1229 * FLOWIDSHIFT and LACP options.
1232 if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT)
1233 sc->flowid_shift = ro->ro_flowid_shift;
1234 else if (ro->ro_opts > 0)
1235 sc->sc_opts |= ro->ro_opts;
1237 sc->sc_opts &= ~ro->ro_opts;
1239 struct lacp_softc *lsc;
1240 struct lacp_port *lp;
1242 lsc = (struct lacp_softc *)sc->sc_psc;
1244 switch (ro->ro_opts) {
1245 case LAGG_OPT_LACP_TXTEST:
1246 lsc->lsc_debug.lsc_tx_test = 1;
1248 case -LAGG_OPT_LACP_TXTEST:
1249 lsc->lsc_debug.lsc_tx_test = 0;
1251 case LAGG_OPT_LACP_RXTEST:
1252 lsc->lsc_debug.lsc_rx_test = 1;
1254 case -LAGG_OPT_LACP_RXTEST:
1255 lsc->lsc_debug.lsc_rx_test = 0;
1257 case LAGG_OPT_LACP_STRICT:
1258 lsc->lsc_strict_mode = 1;
1260 case -LAGG_OPT_LACP_STRICT:
1261 lsc->lsc_strict_mode = 0;
1263 case LAGG_OPT_LACP_TIMEOUT:
1265 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1266 lp->lp_state |= LACP_STATE_TIMEOUT;
1268 lsc->lsc_fast_timeout = 1;
1270 case -LAGG_OPT_LACP_TIMEOUT:
1272 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1273 lp->lp_state &= ~LACP_STATE_TIMEOUT;
1275 lsc->lsc_fast_timeout = 0;
1281 case SIOCGLAGGFLAGS:
1284 if (sc->sc_flags & MBUF_HASHFLAG_L2)
1285 rf->rf_flags |= LAGG_F_HASHL2;
1286 if (sc->sc_flags & MBUF_HASHFLAG_L3)
1287 rf->rf_flags |= LAGG_F_HASHL3;
1288 if (sc->sc_flags & MBUF_HASHFLAG_L4)
1289 rf->rf_flags |= LAGG_F_HASHL4;
1293 error = priv_check(td, PRIV_NET_LAGG);
1296 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) {
1302 if (rf->rf_flags & LAGG_F_HASHL2)
1303 sc->sc_flags |= MBUF_HASHFLAG_L2;
1304 if (rf->rf_flags & LAGG_F_HASHL3)
1305 sc->sc_flags |= MBUF_HASHFLAG_L3;
1306 if (rf->rf_flags & LAGG_F_HASHL4)
1307 sc->sc_flags |= MBUF_HASHFLAG_L4;
1311 if (rp->rp_portname[0] == '\0' ||
1312 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1318 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1319 lp->lp_softc != sc) {
1326 lagg_port2req(lp, rp);
1331 error = priv_check(td, PRIV_NET_LAGG);
1334 if (rp->rp_portname[0] == '\0' ||
1335 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1341 * A laggport interface should not have inet6 address
1342 * because two interfaces with a valid link-local
1343 * scope zone must not be merged in any form. This
1344 * restriction is needed to prevent violation of
1345 * link-local scope zone. Attempts to add a laggport
1346 * interface which has inet6 addresses triggers
1347 * removal of all inet6 addresses on the member
1350 if (in6ifa_llaonifp(tpif)) {
1352 if_printf(sc->sc_ifp,
1353 "IPv6 addresses on %s have been removed "
1354 "before adding it as a member to prevent "
1355 "IPv6 address scope violation.\n",
1360 error = lagg_port_create(sc, tpif);
1364 case SIOCSLAGGDELPORT:
1365 error = priv_check(td, PRIV_NET_LAGG);
1368 if (rp->rp_portname[0] == '\0' ||
1369 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1375 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1376 lp->lp_softc != sc) {
1383 error = lagg_port_destroy(lp, 1);
1388 /* Set flags on ports too */
1390 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1391 lagg_setflags(lp, 1);
1394 if (!(ifp->if_flags & IFF_UP) &&
1395 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1397 * If interface is marked down and it is running,
1398 * then stop and disable it.
1402 } else if ((ifp->if_flags & IFF_UP) &&
1403 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1405 * If interface is marked up and it is stopped, then
1409 (*ifp->if_init)(sc);
1416 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1425 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
1430 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1431 if (lp->lp_ioctl != NULL)
1432 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1434 lagg_capabilities(sc);
1440 /* Do not allow the MTU to be directly changed */
1445 error = ether_ioctl(ifp, cmd, data);
1453 lagg_snd_tag_alloc(struct ifnet *ifp,
1454 union if_snd_tag_alloc_params *params,
1455 struct m_snd_tag **ppmt)
1457 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1458 struct lagg_port *lp;
1462 switch (sc->sc_proto) {
1463 case LAGG_PROTO_FAILOVER:
1464 lp = lagg_link_active(sc, sc->sc_primary);
1466 case LAGG_PROTO_LOADBALANCE:
1467 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1468 params->hdr.flowtype == M_HASHTYPE_NONE)
1469 return (EOPNOTSUPP);
1470 p = params->hdr.flowid >> sc->flowid_shift;
1472 lb = (struct lagg_lb *)sc->sc_psc;
1473 lp = lb->lb_ports[p];
1474 lp = lagg_link_active(sc, lp);
1476 case LAGG_PROTO_LACP:
1477 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1478 params->hdr.flowtype == M_HASHTYPE_NONE)
1479 return (EOPNOTSUPP);
1480 lp = lacp_select_tx_port_by_hash(sc, params->hdr.flowid);
1483 return (EOPNOTSUPP);
1486 return (EOPNOTSUPP);
1488 if (ifp == NULL || ifp->if_snd_tag_alloc == NULL ||
1489 (ifp->if_capenable & IFCAP_TXRTLMT) == 0)
1490 return (EOPNOTSUPP);
1492 /* forward allocation request */
1493 return (ifp->if_snd_tag_alloc(ifp, params, ppmt));
1498 lagg_setmulti(struct lagg_port *lp)
1500 struct lagg_softc *sc = lp->lp_softc;
1501 struct ifnet *ifp = lp->lp_ifp;
1502 struct ifnet *scifp = sc->sc_ifp;
1504 struct ifmultiaddr *ifma;
1507 LAGG_WLOCK_ASSERT(sc);
1508 IF_ADDR_WLOCK(scifp);
1509 TAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) {
1510 if (ifma->ifma_addr->sa_family != AF_LINK)
1512 mc = malloc(sizeof(struct lagg_mc), M_DEVBUF, M_NOWAIT);
1514 IF_ADDR_WUNLOCK(scifp);
1517 bcopy(ifma->ifma_addr, &mc->mc_addr,
1518 ifma->ifma_addr->sa_len);
1519 mc->mc_addr.sdl_index = ifp->if_index;
1521 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries);
1523 IF_ADDR_WUNLOCK(scifp);
1524 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) {
1525 error = if_addmulti(ifp,
1526 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma);
1534 lagg_clrmulti(struct lagg_port *lp)
1538 LAGG_WLOCK_ASSERT(lp->lp_softc);
1539 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) {
1540 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries);
1541 if (mc->mc_ifma && lp->lp_detaching == 0)
1542 if_delmulti_ifma(mc->mc_ifma);
1549 lagg_setcaps(struct lagg_port *lp, int cap)
1553 if (lp->lp_ifp->if_capenable == cap)
1555 if (lp->lp_ioctl == NULL)
1557 ifr.ifr_reqcap = cap;
1558 return ((*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr));
1561 /* Handle a ref counted flag that should be set on the lagg port as well */
1563 lagg_setflag(struct lagg_port *lp, int flag, int status,
1564 int (*func)(struct ifnet *, int))
1566 struct lagg_softc *sc = lp->lp_softc;
1567 struct ifnet *scifp = sc->sc_ifp;
1568 struct ifnet *ifp = lp->lp_ifp;
1571 LAGG_XLOCK_ASSERT(sc);
1573 status = status ? (scifp->if_flags & flag) : 0;
1574 /* Now "status" contains the flag value or 0 */
1577 * See if recorded ports status is different from what
1578 * we want it to be. If it is, flip it. We record ports
1579 * status in lp_ifflags so that we won't clear ports flag
1580 * we haven't set. In fact, we don't clear or set ports
1581 * flags directly, but get or release references to them.
1582 * That's why we can be sure that recorded flags still are
1583 * in accord with actual ports flags.
1585 if (status != (lp->lp_ifflags & flag)) {
1586 error = (*func)(ifp, status);
1589 lp->lp_ifflags &= ~flag;
1590 lp->lp_ifflags |= status;
1596 * Handle IFF_* flags that require certain changes on the lagg port
1597 * if "status" is true, update ports flags respective to the lagg
1598 * if "status" is false, forcedly clear the flags set on port.
1601 lagg_setflags(struct lagg_port *lp, int status)
1605 for (i = 0; lagg_pflags[i].flag; i++) {
1606 error = lagg_setflag(lp, lagg_pflags[i].flag,
1607 status, lagg_pflags[i].func);
1615 lagg_transmit(struct ifnet *ifp, struct mbuf *m)
1617 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1618 int error, len, mcast;
1619 struct rm_priotracker tracker;
1621 len = m->m_pkthdr.len;
1622 mcast = (m->m_flags & (M_MCAST | M_BCAST)) ? 1 : 0;
1624 LAGG_RLOCK(sc, &tracker);
1625 /* We need a Tx algorithm and at least one port */
1626 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
1627 LAGG_RUNLOCK(sc, &tracker);
1629 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1633 ETHER_BPF_MTAP(ifp, m);
1635 error = lagg_proto_start(sc, m);
1636 LAGG_RUNLOCK(sc, &tracker);
1639 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1645 * The ifp->if_qflush entry point for lagg(4) is no-op.
1648 lagg_qflush(struct ifnet *ifp __unused)
1652 static struct mbuf *
1653 lagg_input(struct ifnet *ifp, struct mbuf *m)
1655 struct lagg_port *lp = ifp->if_lagg;
1656 struct lagg_softc *sc = lp->lp_softc;
1657 struct ifnet *scifp = sc->sc_ifp;
1658 struct rm_priotracker tracker;
1660 LAGG_RLOCK(sc, &tracker);
1661 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1662 (lp->lp_flags & LAGG_PORT_DISABLED) ||
1663 sc->sc_proto == LAGG_PROTO_NONE) {
1664 LAGG_RUNLOCK(sc, &tracker);
1669 ETHER_BPF_MTAP(scifp, m);
1671 if (lp->lp_detaching != 0) {
1675 m = lagg_proto_input(sc, lp, m);
1678 if (scifp->if_flags & IFF_MONITOR) {
1684 LAGG_RUNLOCK(sc, &tracker);
1689 lagg_media_change(struct ifnet *ifp)
1691 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1693 if (sc->sc_ifflags & IFF_DEBUG)
1694 printf("%s\n", __func__);
1701 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1703 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1704 struct lagg_port *lp;
1706 imr->ifm_status = IFM_AVALID;
1707 imr->ifm_active = IFM_ETHER | IFM_AUTO;
1710 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1711 if (LAGG_PORTACTIVE(lp))
1712 imr->ifm_status |= IFM_ACTIVE;
1718 lagg_linkstate(struct lagg_softc *sc)
1720 struct lagg_port *lp;
1721 int new_link = LINK_STATE_DOWN;
1724 LAGG_XLOCK_ASSERT(sc);
1726 /* Our link is considered up if at least one of our ports is active */
1727 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1728 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) {
1729 new_link = LINK_STATE_UP;
1733 if_link_state_change(sc->sc_ifp, new_link);
1735 /* Update if_baudrate to reflect the max possible speed */
1736 switch (sc->sc_proto) {
1737 case LAGG_PROTO_FAILOVER:
1738 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ?
1739 sc->sc_primary->lp_ifp->if_baudrate : 0;
1741 case LAGG_PROTO_ROUNDROBIN:
1742 case LAGG_PROTO_LOADBALANCE:
1743 case LAGG_PROTO_BROADCAST:
1745 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1746 speed += lp->lp_ifp->if_baudrate;
1747 sc->sc_ifp->if_baudrate = speed;
1749 case LAGG_PROTO_LACP:
1750 /* LACP updates if_baudrate itself */
1756 lagg_port_state(struct ifnet *ifp, int state)
1758 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg;
1759 struct lagg_softc *sc = NULL;
1768 lagg_proto_linkstate(sc, lp);
1773 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp)
1775 struct lagg_port *lp_next, *rval = NULL;
1778 * Search a port which reports an active link state.
1783 if (LAGG_PORTACTIVE(lp)) {
1787 if ((lp_next = SLIST_NEXT(lp, lp_entries)) != NULL &&
1788 LAGG_PORTACTIVE(lp_next)) {
1794 SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
1795 if (LAGG_PORTACTIVE(lp_next)) {
1806 lagg_enqueue(struct ifnet *ifp, struct mbuf *m)
1809 return (ifp->if_transmit)(ifp, m);
1813 * Simple round robin aggregation
1816 lagg_rr_attach(struct lagg_softc *sc)
1819 sc->sc_bkt_count = sc->sc_bkt;
1823 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m)
1825 struct lagg_port *lp;
1828 if (sc->sc_bkt_count == 0 && sc->sc_bkt > 0)
1829 sc->sc_bkt_count = sc->sc_bkt;
1831 if (sc->sc_bkt > 0) {
1832 atomic_subtract_int(&sc->sc_bkt_count, 1);
1833 if (atomic_cmpset_int(&sc->sc_bkt_count, 0, sc->sc_bkt))
1834 p = atomic_fetchadd_32(&sc->sc_seq, 1);
1838 p = atomic_fetchadd_32(&sc->sc_seq, 1);
1841 lp = SLIST_FIRST(&sc->sc_ports);
1844 lp = SLIST_NEXT(lp, lp_entries);
1847 * Check the port's link state. This will return the next active
1848 * port if the link is down or the port is NULL.
1850 if ((lp = lagg_link_active(sc, lp)) == NULL) {
1856 return (lagg_enqueue(lp->lp_ifp, m));
1859 static struct mbuf *
1860 lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1862 struct ifnet *ifp = sc->sc_ifp;
1864 /* Just pass in the packet to our lagg device */
1865 m->m_pkthdr.rcvif = ifp;
1874 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m)
1876 int active_ports = 0;
1879 struct lagg_port *lp, *last = NULL;
1882 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1883 if (!LAGG_PORTACTIVE(lp))
1889 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
1896 ret = lagg_enqueue(last->lp_ifp, m0);
1906 if ((last = lagg_link_active(sc, last)) == NULL) {
1911 ret = lagg_enqueue(last->lp_ifp, m);
1922 lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1924 struct ifnet *ifp = sc->sc_ifp;
1926 /* Just pass in the packet to our lagg device */
1927 m->m_pkthdr.rcvif = ifp;
1935 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m)
1937 struct lagg_port *lp;
1939 /* Use the master port if active or the next available port */
1940 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) {
1946 return (lagg_enqueue(lp->lp_ifp, m));
1949 static struct mbuf *
1950 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
1952 struct ifnet *ifp = sc->sc_ifp;
1953 struct lagg_port *tmp_tp;
1955 if (lp == sc->sc_primary || V_lagg_failover_rx_all) {
1956 m->m_pkthdr.rcvif = ifp;
1960 if (!LAGG_PORTACTIVE(sc->sc_primary)) {
1961 tmp_tp = lagg_link_active(sc, sc->sc_primary);
1963 * If tmp_tp is null, we've received a packet when all
1964 * our links are down. Weird, but process it anyways.
1966 if ((tmp_tp == NULL || tmp_tp == lp)) {
1967 m->m_pkthdr.rcvif = ifp;
1980 lagg_lb_attach(struct lagg_softc *sc)
1982 struct lagg_port *lp;
1985 lb = malloc(sizeof(struct lagg_lb), M_DEVBUF, M_WAITOK | M_ZERO);
1986 lb->lb_key = m_ether_tcpip_hash_init();
1989 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1990 lagg_lb_port_create(lp);
1994 lagg_lb_detach(struct lagg_softc *sc)
1998 lb = (struct lagg_lb *)sc->sc_psc;
2005 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp)
2007 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2008 struct lagg_port *lp_next;
2011 bzero(&lb->lb_ports, sizeof(lb->lb_ports));
2012 SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
2015 if (i >= LAGG_MAX_PORTS)
2017 if (sc->sc_ifflags & IFF_DEBUG)
2018 printf("%s: port %s at index %d\n",
2019 sc->sc_ifname, lp_next->lp_ifp->if_xname, i);
2020 lb->lb_ports[i++] = lp_next;
2027 lagg_lb_port_create(struct lagg_port *lp)
2029 struct lagg_softc *sc = lp->lp_softc;
2030 return (lagg_lb_porttable(sc, NULL));
2034 lagg_lb_port_destroy(struct lagg_port *lp)
2036 struct lagg_softc *sc = lp->lp_softc;
2037 lagg_lb_porttable(sc, lp);
2041 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m)
2043 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2044 struct lagg_port *lp = NULL;
2047 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) &&
2048 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE)
2049 p = m->m_pkthdr.flowid >> sc->flowid_shift;
2051 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key);
2053 lp = lb->lb_ports[p];
2056 * Check the port's link state. This will return the next active
2057 * port if the link is down or the port is NULL.
2059 if ((lp = lagg_link_active(sc, lp)) == NULL) {
2065 return (lagg_enqueue(lp->lp_ifp, m));
2068 static struct mbuf *
2069 lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2071 struct ifnet *ifp = sc->sc_ifp;
2073 /* Just pass in the packet to our lagg device */
2074 m->m_pkthdr.rcvif = ifp;
2083 lagg_lacp_attach(struct lagg_softc *sc)
2085 struct lagg_port *lp;
2088 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2089 lacp_port_create(lp);
2093 lagg_lacp_detach(struct lagg_softc *sc)
2095 struct lagg_port *lp;
2098 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2099 lacp_port_destroy(lp);
2109 lagg_lacp_lladdr(struct lagg_softc *sc)
2111 struct lagg_port *lp;
2113 LAGG_SXLOCK_ASSERT(sc);
2115 /* purge all the lacp ports */
2116 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2117 lacp_port_destroy(lp);
2119 /* add them back in */
2120 SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2121 lacp_port_create(lp);
2125 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
2127 struct lagg_port *lp;
2129 lp = lacp_select_tx_port(sc, m);
2136 return (lagg_enqueue(lp->lp_ifp, m));
2139 static struct mbuf *
2140 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2142 struct ifnet *ifp = sc->sc_ifp;
2143 struct ether_header *eh;
2146 eh = mtod(m, struct ether_header *);
2147 etype = ntohs(eh->ether_type);
2149 /* Tap off LACP control messages */
2150 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
2151 m = lacp_input(lp, m);
2157 * If the port is not collecting or not in the active aggregator then
2160 if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) {
2165 m->m_pkthdr.rcvif = ifp;