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_kern_tls.h"
27 #include "opt_ratelimit.h"
29 #include <sys/param.h>
30 #include <sys/kernel.h>
31 #include <sys/malloc.h>
33 #include <sys/queue.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/sysctl.h>
37 #include <sys/module.h>
39 #include <sys/systm.h>
42 #include <sys/rmlock.h>
44 #include <sys/taskqueue.h>
45 #include <sys/eventhandler.h>
47 #include <net/ethernet.h>
49 #include <net/if_clone.h>
50 #include <net/if_arp.h>
51 #include <net/if_dl.h>
52 #include <net/if_media.h>
53 #include <net/if_types.h>
54 #include <net/if_var.h>
56 #include <net/route.h>
59 #if defined(INET) || defined(INET6)
60 #include <netinet/in.h>
61 #include <netinet/ip.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/if_ether.h>
69 #include <netinet/ip6.h>
70 #include <netinet6/in6_var.h>
71 #include <netinet6/in6_ifattach.h>
74 #include <net/if_vlan_var.h>
75 #include <net/if_lagg.h>
76 #include <net/ieee8023ad_lacp.h>
80 * XXX: declare here to avoid to include many inet6 related files..
81 * should be more generalized?
83 extern void nd6_setmtu(struct ifnet *);
86 #define LAGG_RLOCK() struct epoch_tracker lagg_et; epoch_enter_preempt(net_epoch_preempt, &lagg_et)
87 #define LAGG_RUNLOCK() epoch_exit_preempt(net_epoch_preempt, &lagg_et)
88 #define LAGG_RLOCK_ASSERT() NET_EPOCH_ASSERT()
89 #define LAGG_UNLOCK_ASSERT() MPASS(!in_epoch(net_epoch_preempt))
91 #define LAGG_SX_INIT(_sc) sx_init(&(_sc)->sc_sx, "if_lagg sx")
92 #define LAGG_SX_DESTROY(_sc) sx_destroy(&(_sc)->sc_sx)
93 #define LAGG_XLOCK(_sc) sx_xlock(&(_sc)->sc_sx)
94 #define LAGG_XUNLOCK(_sc) sx_xunlock(&(_sc)->sc_sx)
95 #define LAGG_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED)
96 #define LAGG_XLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_XLOCKED)
98 /* Special flags we should propagate to the lagg ports. */
101 int (*func)(struct ifnet *, int);
103 {IFF_PROMISC, ifpromisc},
104 {IFF_ALLMULTI, if_allmulti},
108 struct lagg_snd_tag {
109 struct m_snd_tag com;
110 struct m_snd_tag *tag;
113 VNET_DEFINE(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */
114 #define V_lagg_list VNET(lagg_list)
115 VNET_DEFINE_STATIC(struct mtx, lagg_list_mtx);
116 #define V_lagg_list_mtx VNET(lagg_list_mtx)
117 #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \
118 "if_lagg list", NULL, MTX_DEF)
119 #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx)
120 #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx)
121 #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_lagg_list_mtx)
122 eventhandler_tag lagg_detach_cookie = NULL;
124 static int lagg_clone_create(struct if_clone *, int, caddr_t);
125 static void lagg_clone_destroy(struct ifnet *);
126 VNET_DEFINE_STATIC(struct if_clone *, lagg_cloner);
127 #define V_lagg_cloner VNET(lagg_cloner)
128 static const char laggname[] = "lagg";
129 static MALLOC_DEFINE(M_LAGG, laggname, "802.3AD Link Aggregation Interface");
131 static void lagg_capabilities(struct lagg_softc *);
132 static int lagg_port_create(struct lagg_softc *, struct ifnet *);
133 static int lagg_port_destroy(struct lagg_port *, int);
134 static struct mbuf *lagg_input(struct ifnet *, struct mbuf *);
135 static void lagg_linkstate(struct lagg_softc *);
136 static void lagg_port_state(struct ifnet *, int);
137 static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t);
138 static int lagg_port_output(struct ifnet *, struct mbuf *,
139 const struct sockaddr *, struct route *);
140 static void lagg_port_ifdetach(void *arg __unused, struct ifnet *);
141 #ifdef LAGG_PORT_STACKING
142 static int lagg_port_checkstacking(struct lagg_softc *);
144 static void lagg_port2req(struct lagg_port *, struct lagg_reqport *);
145 static void lagg_init(void *);
146 static void lagg_stop(struct lagg_softc *);
147 static int lagg_ioctl(struct ifnet *, u_long, caddr_t);
148 #if defined(KERN_TLS) || defined(RATELIMIT)
149 static int lagg_snd_tag_alloc(struct ifnet *,
150 union if_snd_tag_alloc_params *,
151 struct m_snd_tag **);
152 static int lagg_snd_tag_modify(struct m_snd_tag *,
153 union if_snd_tag_modify_params *);
154 static int lagg_snd_tag_query(struct m_snd_tag *,
155 union if_snd_tag_query_params *);
156 static void lagg_snd_tag_free(struct m_snd_tag *);
157 static void lagg_ratelimit_query(struct ifnet *,
158 struct if_ratelimit_query_results *);
160 static int lagg_setmulti(struct lagg_port *);
161 static int lagg_clrmulti(struct lagg_port *);
162 static int lagg_setcaps(struct lagg_port *, int cap);
163 static int lagg_setflag(struct lagg_port *, int, int,
164 int (*func)(struct ifnet *, int));
165 static int lagg_setflags(struct lagg_port *, int status);
166 static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt);
167 static int lagg_transmit(struct ifnet *, struct mbuf *);
168 static void lagg_qflush(struct ifnet *);
169 static int lagg_media_change(struct ifnet *);
170 static void lagg_media_status(struct ifnet *, struct ifmediareq *);
171 static struct lagg_port *lagg_link_active(struct lagg_softc *,
174 /* Simple round robin */
175 static void lagg_rr_attach(struct lagg_softc *);
176 static int lagg_rr_start(struct lagg_softc *, struct mbuf *);
177 static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *,
180 /* Active failover */
181 static int lagg_fail_start(struct lagg_softc *, struct mbuf *);
182 static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *,
186 static void lagg_lb_attach(struct lagg_softc *);
187 static void lagg_lb_detach(struct lagg_softc *);
188 static int lagg_lb_port_create(struct lagg_port *);
189 static void lagg_lb_port_destroy(struct lagg_port *);
190 static int lagg_lb_start(struct lagg_softc *, struct mbuf *);
191 static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *,
193 static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *);
196 static int lagg_bcast_start(struct lagg_softc *, struct mbuf *);
197 static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *,
201 static void lagg_lacp_attach(struct lagg_softc *);
202 static void lagg_lacp_detach(struct lagg_softc *);
203 static int lagg_lacp_start(struct lagg_softc *, struct mbuf *);
204 static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *,
206 static void lagg_lacp_lladdr(struct lagg_softc *);
208 /* lagg protocol table */
209 static const struct lagg_proto {
211 void (*pr_attach)(struct lagg_softc *);
212 void (*pr_detach)(struct lagg_softc *);
213 int (*pr_start)(struct lagg_softc *, struct mbuf *);
214 struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *,
216 int (*pr_addport)(struct lagg_port *);
217 void (*pr_delport)(struct lagg_port *);
218 void (*pr_linkstate)(struct lagg_port *);
219 void (*pr_init)(struct lagg_softc *);
220 void (*pr_stop)(struct lagg_softc *);
221 void (*pr_lladdr)(struct lagg_softc *);
222 void (*pr_request)(struct lagg_softc *, void *);
223 void (*pr_portreq)(struct lagg_port *, void *);
226 .pr_num = LAGG_PROTO_NONE
229 .pr_num = LAGG_PROTO_ROUNDROBIN,
230 .pr_attach = lagg_rr_attach,
231 .pr_start = lagg_rr_start,
232 .pr_input = lagg_rr_input,
235 .pr_num = LAGG_PROTO_FAILOVER,
236 .pr_start = lagg_fail_start,
237 .pr_input = lagg_fail_input,
240 .pr_num = LAGG_PROTO_LOADBALANCE,
241 .pr_attach = lagg_lb_attach,
242 .pr_detach = lagg_lb_detach,
243 .pr_start = lagg_lb_start,
244 .pr_input = lagg_lb_input,
245 .pr_addport = lagg_lb_port_create,
246 .pr_delport = lagg_lb_port_destroy,
249 .pr_num = LAGG_PROTO_LACP,
250 .pr_attach = lagg_lacp_attach,
251 .pr_detach = lagg_lacp_detach,
252 .pr_start = lagg_lacp_start,
253 .pr_input = lagg_lacp_input,
254 .pr_addport = lacp_port_create,
255 .pr_delport = lacp_port_destroy,
256 .pr_linkstate = lacp_linkstate,
257 .pr_init = lacp_init,
258 .pr_stop = lacp_stop,
259 .pr_lladdr = lagg_lacp_lladdr,
260 .pr_request = lacp_req,
261 .pr_portreq = lacp_portreq,
264 .pr_num = LAGG_PROTO_BROADCAST,
265 .pr_start = lagg_bcast_start,
266 .pr_input = lagg_bcast_input,
270 SYSCTL_DECL(_net_link);
271 SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
274 /* Allow input on any failover links */
275 VNET_DEFINE_STATIC(int, lagg_failover_rx_all);
276 #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all)
277 SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET,
278 &VNET_NAME(lagg_failover_rx_all), 0,
279 "Accept input from any interface in a failover lagg");
281 /* Default value for using flowid */
282 VNET_DEFINE_STATIC(int, def_use_flowid) = 0;
283 #define V_def_use_flowid VNET(def_use_flowid)
284 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN,
285 &VNET_NAME(def_use_flowid), 0,
286 "Default setting for using flow id for load sharing");
288 /* Default value for using numa */
289 VNET_DEFINE_STATIC(int, def_use_numa) = 1;
290 #define V_def_use_numa VNET(def_use_numa)
291 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_numa, CTLFLAG_RWTUN,
292 &VNET_NAME(def_use_numa), 0,
293 "Use numa to steer flows");
295 /* Default value for flowid shift */
296 VNET_DEFINE_STATIC(int, def_flowid_shift) = 16;
297 #define V_def_flowid_shift VNET(def_flowid_shift)
298 SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN,
299 &VNET_NAME(def_flowid_shift), 0,
300 "Default setting for flowid shift for load sharing");
303 vnet_lagg_init(const void *unused __unused)
306 LAGG_LIST_LOCK_INIT();
307 SLIST_INIT(&V_lagg_list);
308 V_lagg_cloner = if_clone_simple(laggname, lagg_clone_create,
309 lagg_clone_destroy, 0);
311 VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
312 vnet_lagg_init, NULL);
315 vnet_lagg_uninit(const void *unused __unused)
318 if_clone_detach(V_lagg_cloner);
319 LAGG_LIST_LOCK_DESTROY();
321 VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY,
322 vnet_lagg_uninit, NULL);
325 lagg_modevent(module_t mod, int type, void *data)
330 lagg_input_p = lagg_input;
331 lagg_linkstate_p = lagg_port_state;
332 lagg_detach_cookie = EVENTHANDLER_REGISTER(
333 ifnet_departure_event, lagg_port_ifdetach, NULL,
334 EVENTHANDLER_PRI_ANY);
337 EVENTHANDLER_DEREGISTER(ifnet_departure_event,
340 lagg_linkstate_p = NULL;
348 static moduledata_t lagg_mod = {
354 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
355 MODULE_VERSION(if_lagg, 1);
358 lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr)
361 LAGG_XLOCK_ASSERT(sc);
362 KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto",
365 if (sc->sc_ifflags & IFF_DEBUG)
366 if_printf(sc->sc_ifp, "using proto %u\n", pr);
368 if (lagg_protos[pr].pr_attach != NULL)
369 lagg_protos[pr].pr_attach(sc);
374 lagg_proto_detach(struct lagg_softc *sc)
378 LAGG_XLOCK_ASSERT(sc);
380 sc->sc_proto = LAGG_PROTO_NONE;
382 if (lagg_protos[pr].pr_detach != NULL)
383 lagg_protos[pr].pr_detach(sc);
387 lagg_proto_start(struct lagg_softc *sc, struct mbuf *m)
390 return (lagg_protos[sc->sc_proto].pr_start(sc, m));
394 lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
397 return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m));
401 lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp)
404 if (lagg_protos[sc->sc_proto].pr_addport == NULL)
407 return (lagg_protos[sc->sc_proto].pr_addport(lp));
411 lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp)
414 if (lagg_protos[sc->sc_proto].pr_delport != NULL)
415 lagg_protos[sc->sc_proto].pr_delport(lp);
419 lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp)
422 if (lagg_protos[sc->sc_proto].pr_linkstate != NULL)
423 lagg_protos[sc->sc_proto].pr_linkstate(lp);
427 lagg_proto_init(struct lagg_softc *sc)
430 if (lagg_protos[sc->sc_proto].pr_init != NULL)
431 lagg_protos[sc->sc_proto].pr_init(sc);
435 lagg_proto_stop(struct lagg_softc *sc)
438 if (lagg_protos[sc->sc_proto].pr_stop != NULL)
439 lagg_protos[sc->sc_proto].pr_stop(sc);
443 lagg_proto_lladdr(struct lagg_softc *sc)
446 if (lagg_protos[sc->sc_proto].pr_lladdr != NULL)
447 lagg_protos[sc->sc_proto].pr_lladdr(sc);
451 lagg_proto_request(struct lagg_softc *sc, void *v)
454 if (lagg_protos[sc->sc_proto].pr_request != NULL)
455 lagg_protos[sc->sc_proto].pr_request(sc, v);
459 lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v)
462 if (lagg_protos[sc->sc_proto].pr_portreq != NULL)
463 lagg_protos[sc->sc_proto].pr_portreq(lp, v);
467 * This routine is run via an vlan
471 lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
473 struct lagg_softc *sc = ifp->if_softc;
474 struct lagg_port *lp;
476 if (ifp->if_softc != arg) /* Not our event */
480 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
481 EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
486 * This routine is run via an vlan
490 lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
492 struct lagg_softc *sc = ifp->if_softc;
493 struct lagg_port *lp;
495 if (ifp->if_softc != arg) /* Not our event */
499 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
500 EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
505 lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
507 struct lagg_softc *sc;
509 static const u_char eaddr[6]; /* 00:00:00:00:00:00 */
511 sc = malloc(sizeof(*sc), M_LAGG, M_WAITOK|M_ZERO);
512 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
520 if (V_def_use_flowid)
521 sc->sc_opts |= LAGG_OPT_USE_FLOWID;
523 sc->sc_opts |= LAGG_OPT_USE_NUMA;
524 sc->flowid_shift = V_def_flowid_shift;
526 /* Hash all layers by default */
527 sc->sc_flags = MBUF_HASHFLAG_L2|MBUF_HASHFLAG_L3|MBUF_HASHFLAG_L4;
529 lagg_proto_attach(sc, LAGG_PROTO_DEFAULT);
531 CK_SLIST_INIT(&sc->sc_ports);
533 /* Initialise pseudo media types */
534 ifmedia_init(&sc->sc_media, 0, lagg_media_change,
536 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
537 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
539 if_initname(ifp, laggname, unit);
541 ifp->if_transmit = lagg_transmit;
542 ifp->if_qflush = lagg_qflush;
543 ifp->if_init = lagg_init;
544 ifp->if_ioctl = lagg_ioctl;
545 ifp->if_get_counter = lagg_get_counter;
546 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
547 #if defined(KERN_TLS) || defined(RATELIMIT)
548 ifp->if_snd_tag_alloc = lagg_snd_tag_alloc;
549 ifp->if_snd_tag_modify = lagg_snd_tag_modify;
550 ifp->if_snd_tag_query = lagg_snd_tag_query;
551 ifp->if_snd_tag_free = lagg_snd_tag_free;
552 ifp->if_ratelimit_query = lagg_ratelimit_query;
554 ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS;
557 * Attach as an ordinary ethernet device, children will be attached
558 * as special device IFT_IEEE8023ADLAG.
560 ether_ifattach(ifp, eaddr);
562 sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
563 lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
564 sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
565 lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
567 /* Insert into the global list of laggs */
569 SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries);
577 lagg_clone_destroy(struct ifnet *ifp)
579 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
580 struct lagg_port *lp;
583 sc->sc_destroying = 1;
585 ifp->if_flags &= ~IFF_UP;
587 EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
588 EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
590 /* Shutdown and remove lagg ports */
591 while ((lp = CK_SLIST_FIRST(&sc->sc_ports)) != NULL)
592 lagg_port_destroy(lp, 1);
594 /* Unhook the aggregation protocol */
595 lagg_proto_detach(sc);
598 ifmedia_removeall(&sc->sc_media);
603 SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries);
611 lagg_capabilities(struct lagg_softc *sc)
613 struct lagg_port *lp;
616 struct ifnet_hw_tsomax hw_tsomax;
618 LAGG_XLOCK_ASSERT(sc);
620 /* Get common enabled capabilities for the lagg ports */
622 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
623 ena &= lp->lp_ifp->if_capenable;
624 ena = (ena == ~0 ? 0 : ena);
627 * Apply common enabled capabilities back to the lagg ports.
628 * May require several iterations if they are dependent.
632 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
633 lagg_setcaps(lp, ena);
634 ena &= lp->lp_ifp->if_capenable;
636 } while (pena != ena);
638 /* Get other capabilities from the lagg ports */
641 memset(&hw_tsomax, 0, sizeof(hw_tsomax));
642 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
643 cap &= lp->lp_ifp->if_capabilities;
644 hwa &= lp->lp_ifp->if_hwassist;
645 if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax);
647 cap = (cap == ~0 ? 0 : cap);
648 hwa = (hwa == ~(uint64_t)0 ? 0 : hwa);
650 if (sc->sc_ifp->if_capabilities != cap ||
651 sc->sc_ifp->if_capenable != ena ||
652 sc->sc_ifp->if_hwassist != hwa ||
653 if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) {
654 sc->sc_ifp->if_capabilities = cap;
655 sc->sc_ifp->if_capenable = ena;
656 sc->sc_ifp->if_hwassist = hwa;
657 getmicrotime(&sc->sc_ifp->if_lastchange);
659 if (sc->sc_ifflags & IFF_DEBUG)
660 if_printf(sc->sc_ifp,
661 "capabilities 0x%08x enabled 0x%08x\n", cap, ena);
666 lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp)
668 struct lagg_softc *sc_ptr;
669 struct lagg_port *lp, *tlp;
671 int error, i, oldmtu;
674 LAGG_XLOCK_ASSERT(sc);
676 if (sc->sc_ifp == ifp) {
677 if_printf(sc->sc_ifp,
678 "cannot add a lagg to itself as a port\n");
682 if (sc->sc_destroying == 1)
685 /* Limit the maximal number of lagg ports */
686 if (sc->sc_count >= LAGG_MAX_PORTS)
689 /* Check if port has already been associated to a lagg */
690 if (ifp->if_lagg != NULL) {
691 /* Port is already in the current lagg? */
692 lp = (struct lagg_port *)ifp->if_lagg;
693 if (lp->lp_softc == sc)
698 /* XXX Disallow non-ethernet interfaces (this should be any of 802) */
699 if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN)
700 return (EPROTONOSUPPORT);
702 /* Allow the first Ethernet member to define the MTU */
704 if (CK_SLIST_EMPTY(&sc->sc_ports)) {
705 sc->sc_ifp->if_mtu = ifp->if_mtu;
706 } else if (sc->sc_ifp->if_mtu != ifp->if_mtu) {
707 if (ifp->if_ioctl == NULL) {
708 if_printf(sc->sc_ifp, "cannot change MTU for %s\n",
712 oldmtu = ifp->if_mtu;
713 strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name));
714 ifr.ifr_mtu = sc->sc_ifp->if_mtu;
715 error = (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
717 if_printf(sc->sc_ifp, "invalid MTU for %s\n",
721 ifr.ifr_mtu = oldmtu;
724 lp = malloc(sizeof(struct lagg_port), M_LAGG, M_WAITOK|M_ZERO);
727 /* Check if port is a stacked lagg */
729 SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) {
730 if (ifp == sc_ptr->sc_ifp) {
734 (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
737 /* XXX disable stacking for the moment, its untested */
738 #ifdef LAGG_PORT_STACKING
739 lp->lp_flags |= LAGG_PORT_STACK;
740 if (lagg_port_checkstacking(sc_ptr) >=
745 (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
757 bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ETHER_ADDR_LEN);
758 lp->lp_ifcapenable = ifp->if_capenable;
759 if (CK_SLIST_EMPTY(&sc->sc_ports)) {
760 bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
761 lagg_proto_lladdr(sc);
762 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
764 if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
766 lagg_setflags(lp, 1);
768 if (CK_SLIST_EMPTY(&sc->sc_ports))
771 /* Change the interface type */
772 lp->lp_iftype = ifp->if_type;
773 ifp->if_type = IFT_IEEE8023ADLAG;
775 lp->lp_ioctl = ifp->if_ioctl;
776 ifp->if_ioctl = lagg_port_ioctl;
777 lp->lp_output = ifp->if_output;
778 ifp->if_output = lagg_port_output;
780 /* Read port counters */
781 pval = lp->port_counters.val;
782 for (i = 0; i < IFCOUNTERS; i++, pval++)
783 *pval = ifp->if_get_counter(ifp, i);
786 * Insert into the list of ports.
787 * Keep ports sorted by if_index. It is handy, when configuration
788 * is predictable and `ifconfig laggN create ...` command
789 * will lead to the same result each time.
791 CK_SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) {
792 if (tlp->lp_ifp->if_index < ifp->if_index && (
793 CK_SLIST_NEXT(tlp, lp_entries) == NULL ||
794 ((struct lagg_port*)CK_SLIST_NEXT(tlp, lp_entries))->lp_ifp->if_index >
799 CK_SLIST_INSERT_AFTER(tlp, lp, lp_entries);
801 CK_SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries);
807 if ((error = lagg_proto_addport(sc, lp)) != 0) {
808 /* Remove the port, without calling pr_delport. */
809 lagg_port_destroy(lp, 0);
811 (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
815 /* Update lagg capabilities */
816 lagg_capabilities(sc);
822 #ifdef LAGG_PORT_STACKING
824 lagg_port_checkstacking(struct lagg_softc *sc)
826 struct lagg_softc *sc_ptr;
827 struct lagg_port *lp;
830 LAGG_SXLOCK_ASSERT(sc);
831 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
832 if (lp->lp_flags & LAGG_PORT_STACK) {
833 sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc;
834 m = MAX(m, lagg_port_checkstacking(sc_ptr));
843 lagg_port_destroy_cb(epoch_context_t ec)
845 struct lagg_port *lp;
848 lp = __containerof(ec, struct lagg_port, lp_epoch_ctx);
856 lagg_port_destroy(struct lagg_port *lp, int rundelport)
858 struct lagg_softc *sc = lp->lp_softc;
859 struct lagg_port *lp_ptr, *lp0;
860 struct ifnet *ifp = lp->lp_ifp;
861 uint64_t *pval, vdiff;
864 LAGG_XLOCK_ASSERT(sc);
867 lagg_proto_delport(sc, lp);
869 if (lp->lp_detaching == 0)
872 /* Restore interface */
873 ifp->if_type = lp->lp_iftype;
874 ifp->if_ioctl = lp->lp_ioctl;
875 ifp->if_output = lp->lp_output;
878 /* Update detached port counters */
879 pval = lp->port_counters.val;
880 for (i = 0; i < IFCOUNTERS; i++, pval++) {
881 vdiff = ifp->if_get_counter(ifp, i) - *pval;
882 sc->detached_counters.val[i] += vdiff;
885 /* Finally, remove the port from the lagg */
886 CK_SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries);
889 /* Update the primary interface */
890 if (lp == sc->sc_primary) {
891 uint8_t lladdr[ETHER_ADDR_LEN];
893 if ((lp0 = CK_SLIST_FIRST(&sc->sc_ports)) == NULL)
894 bzero(&lladdr, ETHER_ADDR_LEN);
896 bcopy(lp0->lp_lladdr, lladdr, ETHER_ADDR_LEN);
897 sc->sc_primary = lp0;
898 if (sc->sc_destroying == 0) {
899 bcopy(lladdr, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN);
900 lagg_proto_lladdr(sc);
901 EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
905 * Update lladdr for each port (new primary needs update
906 * as well, to switch from old lladdr to its 'real' one)
908 CK_SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries)
909 if_setlladdr(lp_ptr->lp_ifp, lladdr, ETHER_ADDR_LEN);
913 if_printf(ifp, "%s: lp_ifflags unclean\n", __func__);
915 if (lp->lp_detaching == 0) {
916 lagg_setflags(lp, 0);
917 lagg_setcaps(lp, lp->lp_ifcapenable);
918 if_setlladdr(ifp, lp->lp_lladdr, ETHER_ADDR_LEN);
922 * free port and release it's ifnet reference after a grace period has
925 NET_EPOCH_CALL(lagg_port_destroy_cb, &lp->lp_epoch_ctx);
926 /* Update lagg capabilities */
927 lagg_capabilities(sc);
934 lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
936 struct lagg_reqport *rp = (struct lagg_reqport *)data;
937 struct lagg_softc *sc;
938 struct lagg_port *lp = NULL;
941 /* Should be checked by the caller */
942 if (ifp->if_type != IFT_IEEE8023ADLAG ||
943 (lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL)
948 if (rp->rp_portname[0] == '\0' ||
949 ifunit(rp->rp_portname) != ifp) {
955 if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) {
961 lagg_port2req(lp, rp);
966 if (lp->lp_ioctl == NULL) {
970 error = (*lp->lp_ioctl)(ifp, cmd, data);
974 /* Update lagg interface capabilities */
976 lagg_capabilities(sc);
978 VLAN_CAPABILITIES(sc->sc_ifp);
982 /* Do not allow the MTU to be changed once joined */
993 if (lp != NULL && lp->lp_ioctl != NULL)
994 return ((*lp->lp_ioctl)(ifp, cmd, data));
1000 * Requests counter @cnt data.
1002 * Counter value is calculated the following way:
1003 * 1) for each port, sum difference between current and "initial" measurements.
1004 * 2) add lagg logical interface counters.
1005 * 3) add data from detached_counters array.
1007 * We also do the following things on ports attach/detach:
1008 * 1) On port attach we store all counters it has into port_counter array.
1009 * 2) On port detach we add the different between "initial" and
1010 * current counters data to detached_counters array.
1013 lagg_get_counter(struct ifnet *ifp, ift_counter cnt)
1015 struct lagg_softc *sc;
1016 struct lagg_port *lp;
1017 struct ifnet *lpifp;
1018 uint64_t newval, oldval, vsum;
1020 /* Revise this when we've got non-generic counters. */
1021 KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt));
1023 sc = (struct lagg_softc *)ifp->if_softc;
1027 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1028 /* Saved attached value */
1029 oldval = lp->port_counters.val[cnt];
1032 newval = lpifp->if_get_counter(lpifp, cnt);
1033 /* Calculate diff and save new */
1034 vsum += newval - oldval;
1039 * Add counter data which might be added by upper
1040 * layer protocols operating on logical interface.
1042 vsum += if_get_counter_default(ifp, cnt);
1045 * Add counter data from detached ports counters
1047 vsum += sc->detached_counters.val[cnt];
1054 * For direct output to child ports.
1057 lagg_port_output(struct ifnet *ifp, struct mbuf *m,
1058 const struct sockaddr *dst, struct route *ro)
1060 struct lagg_port *lp = ifp->if_lagg;
1062 switch (dst->sa_family) {
1063 case pseudo_AF_HDRCMPLT:
1065 return ((*lp->lp_output)(ifp, m, dst, ro));
1068 /* drop any other frames */
1074 lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp)
1076 struct lagg_port *lp;
1077 struct lagg_softc *sc;
1079 if ((lp = ifp->if_lagg) == NULL)
1081 /* If the ifnet is just being renamed, don't do anything. */
1082 if (ifp->if_flags & IFF_RENAMING)
1088 lp->lp_detaching = 1;
1089 lagg_port_destroy(lp, 1);
1091 VLAN_CAPABILITIES(sc->sc_ifp);
1095 lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp)
1097 struct lagg_softc *sc = lp->lp_softc;
1099 strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname));
1100 strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname));
1101 rp->rp_prio = lp->lp_prio;
1102 rp->rp_flags = lp->lp_flags;
1103 lagg_proto_portreq(sc, lp, &rp->rp_psc);
1105 /* Add protocol specific flags */
1106 switch (sc->sc_proto) {
1107 case LAGG_PROTO_FAILOVER:
1108 if (lp == sc->sc_primary)
1109 rp->rp_flags |= LAGG_PORT_MASTER;
1110 if (lp == lagg_link_active(sc, sc->sc_primary))
1111 rp->rp_flags |= LAGG_PORT_ACTIVE;
1114 case LAGG_PROTO_ROUNDROBIN:
1115 case LAGG_PROTO_LOADBALANCE:
1116 case LAGG_PROTO_BROADCAST:
1117 if (LAGG_PORTACTIVE(lp))
1118 rp->rp_flags |= LAGG_PORT_ACTIVE;
1121 case LAGG_PROTO_LACP:
1122 /* LACP has a different definition of active */
1123 if (lacp_isactive(lp))
1124 rp->rp_flags |= LAGG_PORT_ACTIVE;
1125 if (lacp_iscollecting(lp))
1126 rp->rp_flags |= LAGG_PORT_COLLECTING;
1127 if (lacp_isdistributing(lp))
1128 rp->rp_flags |= LAGG_PORT_DISTRIBUTING;
1135 lagg_init(void *xsc)
1137 struct lagg_softc *sc = (struct lagg_softc *)xsc;
1138 struct ifnet *ifp = sc->sc_ifp;
1139 struct lagg_port *lp;
1142 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1147 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1150 * Update the port lladdrs if needed.
1151 * This might be if_setlladdr() notification
1152 * that lladdr has been changed.
1154 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1155 if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp),
1156 ETHER_ADDR_LEN) != 0)
1157 if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ETHER_ADDR_LEN);
1160 lagg_proto_init(sc);
1166 lagg_stop(struct lagg_softc *sc)
1168 struct ifnet *ifp = sc->sc_ifp;
1170 LAGG_XLOCK_ASSERT(sc);
1172 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1175 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1177 lagg_proto_stop(sc);
1181 lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1183 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1184 struct lagg_reqall *ra = (struct lagg_reqall *)data;
1185 struct lagg_reqopts *ro = (struct lagg_reqopts *)data;
1186 struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf;
1187 struct lagg_reqflags *rf = (struct lagg_reqflags *)data;
1188 struct ifreq *ifr = (struct ifreq *)data;
1189 struct lagg_port *lp;
1191 struct thread *td = curthread;
1193 int count, buflen, len, error = 0, oldmtu;
1195 bzero(&rpbuf, sizeof(rpbuf));
1197 /* XXX: This can race with lagg_clone_destroy. */
1202 buflen = sc->sc_count * sizeof(struct lagg_reqport);
1203 outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO);
1204 ra->ra_proto = sc->sc_proto;
1205 lagg_proto_request(sc, &ra->ra_psc);
1208 len = min(ra->ra_size, buflen);
1209 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1210 if (len < sizeof(rpbuf))
1213 lagg_port2req(lp, &rpbuf);
1214 memcpy(buf, &rpbuf, sizeof(rpbuf));
1216 buf += sizeof(rpbuf);
1217 len -= sizeof(rpbuf);
1220 ra->ra_ports = count;
1221 ra->ra_size = count * sizeof(rpbuf);
1222 error = copyout(outbuf, ra->ra_port, ra->ra_size);
1223 free(outbuf, M_TEMP);
1226 error = priv_check(td, PRIV_NET_LAGG);
1229 if (ra->ra_proto >= LAGG_PROTO_MAX) {
1230 error = EPROTONOSUPPORT;
1235 lagg_proto_detach(sc);
1236 LAGG_UNLOCK_ASSERT();
1237 lagg_proto_attach(sc, ra->ra_proto);
1242 ro->ro_opts = sc->sc_opts;
1243 if (sc->sc_proto == LAGG_PROTO_LACP) {
1244 struct lacp_softc *lsc;
1246 lsc = (struct lacp_softc *)sc->sc_psc;
1247 if (lsc->lsc_debug.lsc_tx_test != 0)
1248 ro->ro_opts |= LAGG_OPT_LACP_TXTEST;
1249 if (lsc->lsc_debug.lsc_rx_test != 0)
1250 ro->ro_opts |= LAGG_OPT_LACP_RXTEST;
1251 if (lsc->lsc_strict_mode != 0)
1252 ro->ro_opts |= LAGG_OPT_LACP_STRICT;
1253 if (lsc->lsc_fast_timeout != 0)
1254 ro->ro_opts |= LAGG_OPT_LACP_FAST_TIMO;
1256 ro->ro_active = sc->sc_active;
1259 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1260 ro->ro_active += LAGG_PORTACTIVE(lp);
1262 ro->ro_bkt = sc->sc_stride;
1263 ro->ro_flapping = sc->sc_flapping;
1264 ro->ro_flowid_shift = sc->flowid_shift;
1268 error = priv_check(td, PRIV_NET_LAGG);
1273 * The stride option was added without defining a corresponding
1274 * LAGG_OPT flag, so handle a non-zero value before checking
1275 * anything else to preserve compatibility.
1278 if (ro->ro_opts == 0 && ro->ro_bkt != 0) {
1279 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN) {
1284 sc->sc_stride = ro->ro_bkt;
1286 if (ro->ro_opts == 0) {
1292 * Set options. LACP options are stored in sc->sc_psc,
1297 switch (ro->ro_opts) {
1298 case LAGG_OPT_USE_FLOWID:
1299 case -LAGG_OPT_USE_FLOWID:
1300 case LAGG_OPT_USE_NUMA:
1301 case -LAGG_OPT_USE_NUMA:
1302 case LAGG_OPT_FLOWIDSHIFT:
1303 case LAGG_OPT_RR_LIMIT:
1307 case LAGG_OPT_LACP_TXTEST:
1308 case -LAGG_OPT_LACP_TXTEST:
1309 case LAGG_OPT_LACP_RXTEST:
1310 case -LAGG_OPT_LACP_RXTEST:
1311 case LAGG_OPT_LACP_STRICT:
1312 case -LAGG_OPT_LACP_STRICT:
1313 case LAGG_OPT_LACP_FAST_TIMO:
1314 case -LAGG_OPT_LACP_FAST_TIMO:
1323 (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) {
1324 /* Invalid combination of options specified. */
1327 break; /* Return from SIOCSLAGGOPTS. */
1331 * Store new options into sc->sc_opts except for
1332 * FLOWIDSHIFT, RR and LACP options.
1335 if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT)
1336 sc->flowid_shift = ro->ro_flowid_shift;
1337 else if (ro->ro_opts == LAGG_OPT_RR_LIMIT) {
1338 if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN ||
1344 sc->sc_stride = ro->ro_bkt;
1345 } else if (ro->ro_opts > 0)
1346 sc->sc_opts |= ro->ro_opts;
1348 sc->sc_opts &= ~ro->ro_opts;
1350 struct lacp_softc *lsc;
1351 struct lacp_port *lp;
1353 lsc = (struct lacp_softc *)sc->sc_psc;
1355 switch (ro->ro_opts) {
1356 case LAGG_OPT_LACP_TXTEST:
1357 lsc->lsc_debug.lsc_tx_test = 1;
1359 case -LAGG_OPT_LACP_TXTEST:
1360 lsc->lsc_debug.lsc_tx_test = 0;
1362 case LAGG_OPT_LACP_RXTEST:
1363 lsc->lsc_debug.lsc_rx_test = 1;
1365 case -LAGG_OPT_LACP_RXTEST:
1366 lsc->lsc_debug.lsc_rx_test = 0;
1368 case LAGG_OPT_LACP_STRICT:
1369 lsc->lsc_strict_mode = 1;
1371 case -LAGG_OPT_LACP_STRICT:
1372 lsc->lsc_strict_mode = 0;
1374 case LAGG_OPT_LACP_FAST_TIMO:
1376 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1377 lp->lp_state |= LACP_STATE_TIMEOUT;
1379 lsc->lsc_fast_timeout = 1;
1381 case -LAGG_OPT_LACP_FAST_TIMO:
1383 LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
1384 lp->lp_state &= ~LACP_STATE_TIMEOUT;
1386 lsc->lsc_fast_timeout = 0;
1392 case SIOCGLAGGFLAGS:
1395 if (sc->sc_flags & MBUF_HASHFLAG_L2)
1396 rf->rf_flags |= LAGG_F_HASHL2;
1397 if (sc->sc_flags & MBUF_HASHFLAG_L3)
1398 rf->rf_flags |= LAGG_F_HASHL3;
1399 if (sc->sc_flags & MBUF_HASHFLAG_L4)
1400 rf->rf_flags |= LAGG_F_HASHL4;
1404 error = priv_check(td, PRIV_NET_LAGG);
1407 if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) {
1413 if (rf->rf_flags & LAGG_F_HASHL2)
1414 sc->sc_flags |= MBUF_HASHFLAG_L2;
1415 if (rf->rf_flags & LAGG_F_HASHL3)
1416 sc->sc_flags |= MBUF_HASHFLAG_L3;
1417 if (rf->rf_flags & LAGG_F_HASHL4)
1418 sc->sc_flags |= MBUF_HASHFLAG_L4;
1422 if (rp->rp_portname[0] == '\0' ||
1423 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1429 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1430 lp->lp_softc != sc) {
1437 lagg_port2req(lp, rp);
1442 error = priv_check(td, PRIV_NET_LAGG);
1445 if (rp->rp_portname[0] == '\0' ||
1446 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1452 * A laggport interface should not have inet6 address
1453 * because two interfaces with a valid link-local
1454 * scope zone must not be merged in any form. This
1455 * restriction is needed to prevent violation of
1456 * link-local scope zone. Attempts to add a laggport
1457 * interface which has inet6 addresses triggers
1458 * removal of all inet6 addresses on the member
1461 if (in6ifa_llaonifp(tpif)) {
1463 if_printf(sc->sc_ifp,
1464 "IPv6 addresses on %s have been removed "
1465 "before adding it as a member to prevent "
1466 "IPv6 address scope violation.\n",
1470 oldmtu = ifp->if_mtu;
1472 error = lagg_port_create(sc, tpif);
1477 * LAGG MTU may change during addition of the first port.
1478 * If it did, do network layer specific procedure.
1480 if (ifp->if_mtu != oldmtu) {
1487 VLAN_CAPABILITIES(ifp);
1489 case SIOCSLAGGDELPORT:
1490 error = priv_check(td, PRIV_NET_LAGG);
1493 if (rp->rp_portname[0] == '\0' ||
1494 (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
1500 if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
1501 lp->lp_softc != sc) {
1508 error = lagg_port_destroy(lp, 1);
1511 VLAN_CAPABILITIES(ifp);
1514 /* Set flags on ports too */
1516 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1517 lagg_setflags(lp, 1);
1520 if (!(ifp->if_flags & IFF_UP) &&
1521 (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1523 * If interface is marked down and it is running,
1524 * then stop and disable it.
1528 } else if ((ifp->if_flags & IFF_UP) &&
1529 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1531 * If interface is marked up and it is stopped, then
1535 (*ifp->if_init)(sc);
1542 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1551 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
1556 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1557 if (lp->lp_ioctl != NULL)
1558 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1560 lagg_capabilities(sc);
1562 VLAN_CAPABILITIES(ifp);
1568 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1569 if (lp->lp_ioctl != NULL)
1570 error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1575 "failed to change MTU to %d on port %s, "
1576 "reverting all ports to original MTU (%d)\n",
1577 ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu);
1582 ifp->if_mtu = ifr->ifr_mtu;
1584 /* set every port back to the original MTU */
1585 ifr->ifr_mtu = ifp->if_mtu;
1586 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1587 if (lp->lp_ioctl != NULL)
1588 (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
1595 error = ether_ioctl(ifp, cmd, data);
1601 #if defined(KERN_TLS) || defined(RATELIMIT)
1602 static inline struct lagg_snd_tag *
1603 mst_to_lst(struct m_snd_tag *mst)
1606 return (__containerof(mst, struct lagg_snd_tag, com));
1610 * Look up the port used by a specific flow. This only works for lagg
1611 * protocols with deterministic port mappings (e.g. not roundrobin).
1612 * In addition protocols which use a hash to map flows to ports must
1613 * be configured to use the mbuf flowid rather than hashing packet
1616 static struct lagg_port *
1617 lookup_snd_tag_port(struct ifnet *ifp, uint32_t flowid, uint32_t flowtype,
1618 uint8_t numa_domain)
1620 struct lagg_softc *sc;
1621 struct lagg_port *lp;
1627 switch (sc->sc_proto) {
1628 case LAGG_PROTO_FAILOVER:
1629 return (lagg_link_active(sc, sc->sc_primary));
1630 case LAGG_PROTO_LOADBALANCE:
1631 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1632 flowtype == M_HASHTYPE_NONE)
1634 p = flowid >> sc->flowid_shift;
1636 lb = (struct lagg_lb *)sc->sc_psc;
1637 lp = lb->lb_ports[p];
1638 return (lagg_link_active(sc, lp));
1639 case LAGG_PROTO_LACP:
1640 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
1641 flowtype == M_HASHTYPE_NONE)
1643 hash = flowid >> sc->flowid_shift;
1644 return (lacp_select_tx_port_by_hash(sc, hash, numa_domain));
1651 lagg_snd_tag_alloc(struct ifnet *ifp,
1652 union if_snd_tag_alloc_params *params,
1653 struct m_snd_tag **ppmt)
1655 struct lagg_snd_tag *lst;
1656 struct lagg_softc *sc;
1657 struct lagg_port *lp;
1658 struct ifnet *lp_ifp;
1664 lp = lookup_snd_tag_port(ifp, params->hdr.flowid,
1665 params->hdr.flowtype, params->hdr.numa_domain);
1668 return (EOPNOTSUPP);
1670 if (lp->lp_ifp == NULL || lp->lp_ifp->if_snd_tag_alloc == NULL) {
1672 return (EOPNOTSUPP);
1674 lp_ifp = lp->lp_ifp;
1678 lst = malloc(sizeof(*lst), M_LAGG, M_NOWAIT);
1684 error = lp_ifp->if_snd_tag_alloc(lp_ifp, params, &lst->tag);
1691 m_snd_tag_init(&lst->com, ifp);
1698 lagg_snd_tag_modify(struct m_snd_tag *mst,
1699 union if_snd_tag_modify_params *params)
1701 struct lagg_snd_tag *lst;
1703 lst = mst_to_lst(mst);
1704 return (lst->tag->ifp->if_snd_tag_modify(lst->tag, params));
1708 lagg_snd_tag_query(struct m_snd_tag *mst,
1709 union if_snd_tag_query_params *params)
1711 struct lagg_snd_tag *lst;
1713 lst = mst_to_lst(mst);
1714 return (lst->tag->ifp->if_snd_tag_query(lst->tag, params));
1718 lagg_snd_tag_free(struct m_snd_tag *mst)
1720 struct lagg_snd_tag *lst;
1722 lst = mst_to_lst(mst);
1723 m_snd_tag_rele(lst->tag);
1728 lagg_ratelimit_query(struct ifnet *ifp __unused, struct if_ratelimit_query_results *q)
1731 * For lagg, we have an indirect
1732 * interface. The caller needs to
1733 * get a ratelimit tag on the actual
1734 * interface the flow will go on.
1736 q->rate_table = NULL;
1737 q->flags = RT_IS_INDIRECT;
1739 q->number_of_rates = 0;
1744 lagg_setmulti(struct lagg_port *lp)
1746 struct lagg_softc *sc = lp->lp_softc;
1747 struct ifnet *ifp = lp->lp_ifp;
1748 struct ifnet *scifp = sc->sc_ifp;
1750 struct ifmultiaddr *ifma;
1753 IF_ADDR_WLOCK(scifp);
1754 CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) {
1755 if (ifma->ifma_addr->sa_family != AF_LINK)
1757 mc = malloc(sizeof(struct lagg_mc), M_LAGG, M_NOWAIT);
1759 IF_ADDR_WUNLOCK(scifp);
1762 bcopy(ifma->ifma_addr, &mc->mc_addr,
1763 ifma->ifma_addr->sa_len);
1764 mc->mc_addr.sdl_index = ifp->if_index;
1766 SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries);
1768 IF_ADDR_WUNLOCK(scifp);
1769 SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) {
1770 error = if_addmulti(ifp,
1771 (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma);
1779 lagg_clrmulti(struct lagg_port *lp)
1783 LAGG_XLOCK_ASSERT(lp->lp_softc);
1784 while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) {
1785 SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries);
1786 if (mc->mc_ifma && lp->lp_detaching == 0)
1787 if_delmulti_ifma(mc->mc_ifma);
1794 lagg_setcaps(struct lagg_port *lp, int cap)
1798 if (lp->lp_ifp->if_capenable == cap)
1800 if (lp->lp_ioctl == NULL)
1802 ifr.ifr_reqcap = cap;
1803 return ((*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr));
1806 /* Handle a ref counted flag that should be set on the lagg port as well */
1808 lagg_setflag(struct lagg_port *lp, int flag, int status,
1809 int (*func)(struct ifnet *, int))
1811 struct lagg_softc *sc = lp->lp_softc;
1812 struct ifnet *scifp = sc->sc_ifp;
1813 struct ifnet *ifp = lp->lp_ifp;
1816 LAGG_XLOCK_ASSERT(sc);
1818 status = status ? (scifp->if_flags & flag) : 0;
1819 /* Now "status" contains the flag value or 0 */
1822 * See if recorded ports status is different from what
1823 * we want it to be. If it is, flip it. We record ports
1824 * status in lp_ifflags so that we won't clear ports flag
1825 * we haven't set. In fact, we don't clear or set ports
1826 * flags directly, but get or release references to them.
1827 * That's why we can be sure that recorded flags still are
1828 * in accord with actual ports flags.
1830 if (status != (lp->lp_ifflags & flag)) {
1831 error = (*func)(ifp, status);
1834 lp->lp_ifflags &= ~flag;
1835 lp->lp_ifflags |= status;
1841 * Handle IFF_* flags that require certain changes on the lagg port
1842 * if "status" is true, update ports flags respective to the lagg
1843 * if "status" is false, forcedly clear the flags set on port.
1846 lagg_setflags(struct lagg_port *lp, int status)
1850 for (i = 0; lagg_pflags[i].flag; i++) {
1851 error = lagg_setflag(lp, lagg_pflags[i].flag,
1852 status, lagg_pflags[i].func);
1860 lagg_transmit(struct ifnet *ifp, struct mbuf *m)
1862 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1865 #if defined(KERN_TLS) || defined(RATELIMIT)
1866 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG)
1867 MPASS(m->m_pkthdr.snd_tag->ifp == ifp);
1870 /* We need a Tx algorithm and at least one port */
1871 if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
1874 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1878 ETHER_BPF_MTAP(ifp, m);
1880 error = lagg_proto_start(sc, m);
1886 * The ifp->if_qflush entry point for lagg(4) is no-op.
1889 lagg_qflush(struct ifnet *ifp __unused)
1893 static struct mbuf *
1894 lagg_input(struct ifnet *ifp, struct mbuf *m)
1896 struct lagg_port *lp = ifp->if_lagg;
1897 struct lagg_softc *sc = lp->lp_softc;
1898 struct ifnet *scifp = sc->sc_ifp;
1901 if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1902 lp->lp_detaching != 0 ||
1903 sc->sc_proto == LAGG_PROTO_NONE) {
1909 ETHER_BPF_MTAP(scifp, m);
1911 m = lagg_proto_input(sc, lp, m);
1912 if (m != NULL && (scifp->if_flags & IFF_MONITOR) != 0) {
1922 lagg_media_change(struct ifnet *ifp)
1924 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1926 if (sc->sc_ifflags & IFF_DEBUG)
1927 printf("%s\n", __func__);
1934 lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr)
1936 struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
1937 struct lagg_port *lp;
1939 imr->ifm_status = IFM_AVALID;
1940 imr->ifm_active = IFM_ETHER | IFM_AUTO;
1943 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1944 if (LAGG_PORTACTIVE(lp))
1945 imr->ifm_status |= IFM_ACTIVE;
1951 lagg_linkstate(struct lagg_softc *sc)
1953 struct lagg_port *lp;
1954 int new_link = LINK_STATE_DOWN;
1957 LAGG_XLOCK_ASSERT(sc);
1959 /* LACP handles link state itself */
1960 if (sc->sc_proto == LAGG_PROTO_LACP)
1963 /* Our link is considered up if at least one of our ports is active */
1965 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
1966 if (lp->lp_ifp->if_link_state == LINK_STATE_UP) {
1967 new_link = LINK_STATE_UP;
1972 if_link_state_change(sc->sc_ifp, new_link);
1974 /* Update if_baudrate to reflect the max possible speed */
1975 switch (sc->sc_proto) {
1976 case LAGG_PROTO_FAILOVER:
1977 sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ?
1978 sc->sc_primary->lp_ifp->if_baudrate : 0;
1980 case LAGG_PROTO_ROUNDROBIN:
1981 case LAGG_PROTO_LOADBALANCE:
1982 case LAGG_PROTO_BROADCAST:
1985 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
1986 speed += lp->lp_ifp->if_baudrate;
1988 sc->sc_ifp->if_baudrate = speed;
1990 case LAGG_PROTO_LACP:
1991 /* LACP updates if_baudrate itself */
1997 lagg_port_state(struct ifnet *ifp, int state)
1999 struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg;
2000 struct lagg_softc *sc = NULL;
2009 lagg_proto_linkstate(sc, lp);
2014 lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp)
2016 struct lagg_port *lp_next, *rval = NULL;
2019 * Search a port which reports an active link state.
2024 * This is called with either LAGG_RLOCK() held or
2025 * LAGG_XLOCK(sc) held.
2027 if (!in_epoch(net_epoch_preempt))
2028 LAGG_XLOCK_ASSERT(sc);
2033 if (LAGG_PORTACTIVE(lp)) {
2037 if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL &&
2038 LAGG_PORTACTIVE(lp_next)) {
2044 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
2045 if (LAGG_PORTACTIVE(lp_next)) {
2054 lagg_enqueue(struct ifnet *ifp, struct mbuf *m)
2057 #if defined(KERN_TLS) || defined(RATELIMIT)
2058 if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) {
2059 struct lagg_snd_tag *lst;
2060 struct m_snd_tag *mst;
2062 mst = m->m_pkthdr.snd_tag;
2063 lst = mst_to_lst(mst);
2064 if (lst->tag->ifp != ifp) {
2068 m->m_pkthdr.snd_tag = m_snd_tag_ref(lst->tag);
2069 m_snd_tag_rele(mst);
2072 return (ifp->if_transmit)(ifp, m);
2076 * Simple round robin aggregation
2079 lagg_rr_attach(struct lagg_softc *sc)
2086 lagg_rr_start(struct lagg_softc *sc, struct mbuf *m)
2088 struct lagg_port *lp;
2091 p = atomic_fetchadd_32(&sc->sc_seq, 1);
2094 lp = CK_SLIST_FIRST(&sc->sc_ports);
2097 lp = CK_SLIST_NEXT(lp, lp_entries);
2100 * Check the port's link state. This will return the next active
2101 * port if the link is down or the port is NULL.
2103 if ((lp = lagg_link_active(sc, lp)) == NULL) {
2104 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
2110 return (lagg_enqueue(lp->lp_ifp, m));
2113 static struct mbuf *
2114 lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2116 struct ifnet *ifp = sc->sc_ifp;
2118 /* Just pass in the packet to our lagg device */
2119 m->m_pkthdr.rcvif = ifp;
2128 lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m)
2130 int active_ports = 0;
2133 struct lagg_port *lp, *last = NULL;
2136 LAGG_RLOCK_ASSERT();
2137 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
2138 if (!LAGG_PORTACTIVE(lp))
2144 m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
2150 lagg_enqueue(last->lp_ifp, m0);
2156 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
2160 if ((last = lagg_link_active(sc, last)) == NULL) {
2162 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors);
2167 ret = lagg_enqueue(last->lp_ifp, m);
2169 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors);
2175 lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2177 struct ifnet *ifp = sc->sc_ifp;
2179 /* Just pass in the packet to our lagg device */
2180 m->m_pkthdr.rcvif = ifp;
2188 lagg_fail_start(struct lagg_softc *sc, struct mbuf *m)
2190 struct lagg_port *lp;
2192 /* Use the master port if active or the next available port */
2193 if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) {
2194 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
2200 return (lagg_enqueue(lp->lp_ifp, m));
2203 static struct mbuf *
2204 lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2206 struct ifnet *ifp = sc->sc_ifp;
2207 struct lagg_port *tmp_tp;
2209 if (lp == sc->sc_primary || V_lagg_failover_rx_all) {
2210 m->m_pkthdr.rcvif = ifp;
2214 if (!LAGG_PORTACTIVE(sc->sc_primary)) {
2215 tmp_tp = lagg_link_active(sc, sc->sc_primary);
2217 * If tmp_tp is null, we've received a packet when all
2218 * our links are down. Weird, but process it anyways.
2220 if ((tmp_tp == NULL || tmp_tp == lp)) {
2221 m->m_pkthdr.rcvif = ifp;
2234 lagg_lb_attach(struct lagg_softc *sc)
2236 struct lagg_port *lp;
2239 LAGG_XLOCK_ASSERT(sc);
2240 lb = malloc(sizeof(struct lagg_lb), M_LAGG, M_WAITOK | M_ZERO);
2241 lb->lb_key = m_ether_tcpip_hash_init();
2244 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2245 lagg_lb_port_create(lp);
2249 lagg_lb_detach(struct lagg_softc *sc)
2253 lb = (struct lagg_lb *)sc->sc_psc;
2259 lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp)
2261 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2262 struct lagg_port *lp_next;
2266 bzero(&lb->lb_ports, sizeof(lb->lb_ports));
2267 LAGG_XLOCK_ASSERT(sc);
2268 CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
2271 if (i >= LAGG_MAX_PORTS) {
2275 if (sc->sc_ifflags & IFF_DEBUG)
2276 printf("%s: port %s at index %d\n",
2277 sc->sc_ifname, lp_next->lp_ifp->if_xname, i);
2278 lb->lb_ports[i++] = lp_next;
2285 lagg_lb_port_create(struct lagg_port *lp)
2287 struct lagg_softc *sc = lp->lp_softc;
2288 return (lagg_lb_porttable(sc, NULL));
2292 lagg_lb_port_destroy(struct lagg_port *lp)
2294 struct lagg_softc *sc = lp->lp_softc;
2295 lagg_lb_porttable(sc, lp);
2299 lagg_lb_start(struct lagg_softc *sc, struct mbuf *m)
2301 struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
2302 struct lagg_port *lp = NULL;
2305 if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) &&
2306 M_HASHTYPE_GET(m) != M_HASHTYPE_NONE)
2307 p = m->m_pkthdr.flowid >> sc->flowid_shift;
2309 p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key);
2311 lp = lb->lb_ports[p];
2314 * Check the port's link state. This will return the next active
2315 * port if the link is down or the port is NULL.
2317 if ((lp = lagg_link_active(sc, lp)) == NULL) {
2318 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
2324 return (lagg_enqueue(lp->lp_ifp, m));
2327 static struct mbuf *
2328 lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2330 struct ifnet *ifp = sc->sc_ifp;
2332 /* Just pass in the packet to our lagg device */
2333 m->m_pkthdr.rcvif = ifp;
2342 lagg_lacp_attach(struct lagg_softc *sc)
2344 struct lagg_port *lp;
2347 LAGG_XLOCK_ASSERT(sc);
2348 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2349 lacp_port_create(lp);
2353 lagg_lacp_detach(struct lagg_softc *sc)
2355 struct lagg_port *lp;
2358 LAGG_XLOCK_ASSERT(sc);
2359 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2360 lacp_port_destroy(lp);
2368 lagg_lacp_lladdr(struct lagg_softc *sc)
2370 struct lagg_port *lp;
2372 LAGG_SXLOCK_ASSERT(sc);
2374 /* purge all the lacp ports */
2375 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2376 lacp_port_destroy(lp);
2378 /* add them back in */
2379 CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
2380 lacp_port_create(lp);
2384 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
2386 struct lagg_port *lp;
2388 lp = lacp_select_tx_port(sc, m);
2390 if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
2396 return (lagg_enqueue(lp->lp_ifp, m));
2399 static struct mbuf *
2400 lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
2402 struct ifnet *ifp = sc->sc_ifp;
2403 struct ether_header *eh;
2406 eh = mtod(m, struct ether_header *);
2407 etype = ntohs(eh->ether_type);
2409 /* Tap off LACP control messages */
2410 if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
2411 m = lacp_input(lp, m);
2417 * If the port is not collecting or not in the active aggregator then
2420 if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) {
2425 m->m_pkthdr.rcvif = ifp;