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- /* $OpenBSD: if_trunk.c,v 1.30 2007/01/31 06:20:19 reyk Exp $ */
- /*
- * Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org>
- * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
- * Copyright (c) 2014, 2016 Marcelo Araujo <araujo@FreeBSD.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- #include <sys/cdefs.h>
- #include "opt_inet.h"
- #include "opt_inet6.h"
- #include "opt_kern_tls.h"
- #include "opt_ratelimit.h"
- #include <sys/param.h>
- #include <sys/kernel.h>
- #include <sys/malloc.h>
- #include <sys/mbuf.h>
- #include <sys/queue.h>
- #include <sys/socket.h>
- #include <sys/sockio.h>
- #include <sys/sysctl.h>
- #include <sys/module.h>
- #include <sys/priv.h>
- #include <sys/systm.h>
- #include <sys/proc.h>
- #include <sys/lock.h>
- #include <sys/rmlock.h>
- #include <sys/sx.h>
- #include <sys/taskqueue.h>
- #include <sys/eventhandler.h>
- #include <net/ethernet.h>
- #include <net/if.h>
- #include <net/if_clone.h>
- #include <net/if_arp.h>
- #include <net/if_dl.h>
- #include <net/if_media.h>
- #include <net/if_types.h>
- #include <net/if_var.h>
- #include <net/if_private.h>
- #include <net/bpf.h>
- #include <net/route.h>
- #include <net/vnet.h>
- #include <net/infiniband.h>
- #if defined(INET) || defined(INET6)
- #include <netinet/in.h>
- #include <netinet/ip.h>
- #endif
- #ifdef INET
- #include <netinet/in_systm.h>
- #include <netinet/if_ether.h>
- #endif
- #ifdef INET6
- #include <netinet/ip6.h>
- #include <netinet6/in6_var.h>
- #include <netinet6/in6_ifattach.h>
- #endif
- #include <net/if_vlan_var.h>
- #include <net/if_lagg.h>
- #include <net/ieee8023ad_lacp.h>
- #ifdef DEV_NETMAP
- MODULE_DEPEND(if_lagg, netmap, 1, 1, 1);
- #endif
- #define LAGG_SX_INIT(_sc) sx_init(&(_sc)->sc_sx, "if_lagg sx")
- #define LAGG_SX_DESTROY(_sc) sx_destroy(&(_sc)->sc_sx)
- #define LAGG_XLOCK(_sc) sx_xlock(&(_sc)->sc_sx)
- #define LAGG_XUNLOCK(_sc) sx_xunlock(&(_sc)->sc_sx)
- #define LAGG_XLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_XLOCKED)
- #define LAGG_SLOCK(_sc) sx_slock(&(_sc)->sc_sx)
- #define LAGG_SUNLOCK(_sc) sx_sunlock(&(_sc)->sc_sx)
- #define LAGG_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED)
- /* Special flags we should propagate to the lagg ports. */
- static struct {
- int flag;
- int (*func)(struct ifnet *, int);
- } lagg_pflags[] = {
- {IFF_PROMISC, ifpromisc},
- {IFF_ALLMULTI, if_allmulti},
- {0, NULL}
- };
- struct lagg_snd_tag {
- struct m_snd_tag com;
- struct m_snd_tag *tag;
- };
- VNET_DEFINE_STATIC(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */
- #define V_lagg_list VNET(lagg_list)
- VNET_DEFINE_STATIC(struct mtx, lagg_list_mtx);
- #define V_lagg_list_mtx VNET(lagg_list_mtx)
- #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \
- "if_lagg list", NULL, MTX_DEF)
- #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx)
- #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx)
- #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_lagg_list_mtx)
- static eventhandler_tag lagg_detach_cookie = NULL;
- static int lagg_clone_create(struct if_clone *, char *, size_t,
- struct ifc_data *, struct ifnet **);
- static int lagg_clone_destroy(struct if_clone *, struct ifnet *, uint32_t);
- VNET_DEFINE_STATIC(struct if_clone *, lagg_cloner);
- #define V_lagg_cloner VNET(lagg_cloner)
- static const char laggname[] = "lagg";
- static MALLOC_DEFINE(M_LAGG, laggname, "802.3AD Link Aggregation Interface");
- static void lagg_capabilities(struct lagg_softc *);
- static int lagg_port_create(struct lagg_softc *, struct ifnet *);
- static int lagg_port_destroy(struct lagg_port *, int);
- static struct mbuf *lagg_input_ethernet(struct ifnet *, struct mbuf *);
- static struct mbuf *lagg_input_infiniband(struct ifnet *, struct mbuf *);
- static void lagg_linkstate(struct lagg_softc *);
- static void lagg_port_state(struct ifnet *, int);
- static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t);
- static int lagg_port_output(struct ifnet *, struct mbuf *,
- const struct sockaddr *, struct route *);
- static void lagg_port_ifdetach(void *arg __unused, struct ifnet *);
- #ifdef LAGG_PORT_STACKING
- static int lagg_port_checkstacking(struct lagg_softc *);
- #endif
- static void lagg_port2req(struct lagg_port *, struct lagg_reqport *);
- static void lagg_if_updown(struct lagg_softc *, bool);
- static void lagg_init(void *);
- static void lagg_stop(struct lagg_softc *);
- static int lagg_ioctl(struct ifnet *, u_long, caddr_t);
- #if defined(KERN_TLS) || defined(RATELIMIT)
- static int lagg_snd_tag_alloc(struct ifnet *,
- union if_snd_tag_alloc_params *,
- struct m_snd_tag **);
- static int lagg_snd_tag_modify(struct m_snd_tag *,
- union if_snd_tag_modify_params *);
- static int lagg_snd_tag_query(struct m_snd_tag *,
- union if_snd_tag_query_params *);
- static void lagg_snd_tag_free(struct m_snd_tag *);
- static struct m_snd_tag *lagg_next_snd_tag(struct m_snd_tag *);
- static void lagg_ratelimit_query(struct ifnet *,
- struct if_ratelimit_query_results *);
- #endif
- static int lagg_setmulti(struct lagg_port *);
- static int lagg_clrmulti(struct lagg_port *);
- static void lagg_setcaps(struct lagg_port *, int cap, int cap2);
- static int lagg_setflag(struct lagg_port *, int, int,
- int (*func)(struct ifnet *, int));
- static int lagg_setflags(struct lagg_port *, int status);
- static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt);
- static int lagg_transmit_ethernet(struct ifnet *, struct mbuf *);
- static int lagg_transmit_infiniband(struct ifnet *, struct mbuf *);
- static void lagg_qflush(struct ifnet *);
- static int lagg_media_change(struct ifnet *);
- static void lagg_media_status(struct ifnet *, struct ifmediareq *);
- static struct lagg_port *lagg_link_active(struct lagg_softc *,
- struct lagg_port *);
- /* Simple round robin */
- static void lagg_rr_attach(struct lagg_softc *);
- static int lagg_rr_start(struct lagg_softc *, struct mbuf *);
- /* Active failover */
- static int lagg_fail_start(struct lagg_softc *, struct mbuf *);
- static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *,
- struct mbuf *);
- /* Loadbalancing */
- static void lagg_lb_attach(struct lagg_softc *);
- static void lagg_lb_detach(struct lagg_softc *);
- static int lagg_lb_port_create(struct lagg_port *);
- static void lagg_lb_port_destroy(struct lagg_port *);
- static int lagg_lb_start(struct lagg_softc *, struct mbuf *);
- static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *);
- /* Broadcast */
- static int lagg_bcast_start(struct lagg_softc *, struct mbuf *);
- /* 802.3ad LACP */
- static void lagg_lacp_attach(struct lagg_softc *);
- static void lagg_lacp_detach(struct lagg_softc *);
- static int lagg_lacp_start(struct lagg_softc *, struct mbuf *);
- static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *,
- struct mbuf *);
- static void lagg_lacp_lladdr(struct lagg_softc *);
- /* Default input */
- static struct mbuf *lagg_default_input(struct lagg_softc *, struct lagg_port *,
- struct mbuf *);
- /* lagg protocol table */
- static const struct lagg_proto {
- lagg_proto pr_num;
- void (*pr_attach)(struct lagg_softc *);
- void (*pr_detach)(struct lagg_softc *);
- int (*pr_start)(struct lagg_softc *, struct mbuf *);
- struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *,
- struct mbuf *);
- int (*pr_addport)(struct lagg_port *);
- void (*pr_delport)(struct lagg_port *);
- void (*pr_linkstate)(struct lagg_port *);
- void (*pr_init)(struct lagg_softc *);
- void (*pr_stop)(struct lagg_softc *);
- void (*pr_lladdr)(struct lagg_softc *);
- void (*pr_request)(struct lagg_softc *, void *);
- void (*pr_portreq)(struct lagg_port *, void *);
- } lagg_protos[] = {
- {
- .pr_num = LAGG_PROTO_NONE
- },
- {
- .pr_num = LAGG_PROTO_ROUNDROBIN,
- .pr_attach = lagg_rr_attach,
- .pr_start = lagg_rr_start,
- .pr_input = lagg_default_input,
- },
- {
- .pr_num = LAGG_PROTO_FAILOVER,
- .pr_start = lagg_fail_start,
- .pr_input = lagg_fail_input,
- },
- {
- .pr_num = LAGG_PROTO_LOADBALANCE,
- .pr_attach = lagg_lb_attach,
- .pr_detach = lagg_lb_detach,
- .pr_start = lagg_lb_start,
- .pr_input = lagg_default_input,
- .pr_addport = lagg_lb_port_create,
- .pr_delport = lagg_lb_port_destroy,
- },
- {
- .pr_num = LAGG_PROTO_LACP,
- .pr_attach = lagg_lacp_attach,
- .pr_detach = lagg_lacp_detach,
- .pr_start = lagg_lacp_start,
- .pr_input = lagg_lacp_input,
- .pr_addport = lacp_port_create,
- .pr_delport = lacp_port_destroy,
- .pr_linkstate = lacp_linkstate,
- .pr_init = lacp_init,
- .pr_stop = lacp_stop,
- .pr_lladdr = lagg_lacp_lladdr,
- .pr_request = lacp_req,
- .pr_portreq = lacp_portreq,
- },
- {
- .pr_num = LAGG_PROTO_BROADCAST,
- .pr_start = lagg_bcast_start,
- .pr_input = lagg_default_input,
- },
- };
- SYSCTL_DECL(_net_link);
- SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
- "Link Aggregation");
- /* Allow input on any failover links */
- VNET_DEFINE_STATIC(int, lagg_failover_rx_all);
- #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all)
- SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET,
- &VNET_NAME(lagg_failover_rx_all), 0,
- "Accept input from any interface in a failover lagg");
- /* Default value for using flowid */
- VNET_DEFINE_STATIC(int, def_use_flowid) = 0;
- #define V_def_use_flowid VNET(def_use_flowid)
- SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid,
- CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_use_flowid), 0,
- "Default setting for using flow id for load sharing");
- /* Default value for using numa */
- VNET_DEFINE_STATIC(int, def_use_numa) = 1;
- #define V_def_use_numa VNET(def_use_numa)
- SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_numa,
- CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_use_numa), 0,
- "Use numa to steer flows");
- /* Default value for flowid shift */
- VNET_DEFINE_STATIC(int, def_flowid_shift) = 16;
- #define V_def_flowid_shift VNET(def_flowid_shift)
- SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift,
- CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(def_flowid_shift), 0,
- "Default setting for flowid shift for load sharing");
- static void
- vnet_lagg_init(const void *unused __unused)
- {
- LAGG_LIST_LOCK_INIT();
- SLIST_INIT(&V_lagg_list);
- struct if_clone_addreq req = {
- .create_f = lagg_clone_create,
- .destroy_f = lagg_clone_destroy,
- .flags = IFC_F_AUTOUNIT,
- };
- V_lagg_cloner = ifc_attach_cloner(laggname, &req);
- }
- VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY,
- vnet_lagg_init, NULL);
- static void
- vnet_lagg_uninit(const void *unused __unused)
- {
- ifc_detach_cloner(V_lagg_cloner);
- LAGG_LIST_LOCK_DESTROY();
- }
- VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_INIT_IF, SI_ORDER_ANY,
- vnet_lagg_uninit, NULL);
- static int
- lagg_modevent(module_t mod, int type, void *data)
- {
- switch (type) {
- case MOD_LOAD:
- lagg_input_ethernet_p = lagg_input_ethernet;
- lagg_input_infiniband_p = lagg_input_infiniband;
- lagg_linkstate_p = lagg_port_state;
- lagg_detach_cookie = EVENTHANDLER_REGISTER(
- ifnet_departure_event, lagg_port_ifdetach, NULL,
- EVENTHANDLER_PRI_ANY);
- break;
- case MOD_UNLOAD:
- EVENTHANDLER_DEREGISTER(ifnet_departure_event,
- lagg_detach_cookie);
- lagg_input_ethernet_p = NULL;
- lagg_input_infiniband_p = NULL;
- lagg_linkstate_p = NULL;
- break;
- default:
- return (EOPNOTSUPP);
- }
- return (0);
- }
- static moduledata_t lagg_mod = {
- "if_lagg",
- lagg_modevent,
- 0
- };
- DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
- MODULE_VERSION(if_lagg, 1);
- MODULE_DEPEND(if_lagg, if_infiniband, 1, 1, 1);
- static void
- lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr)
- {
- LAGG_XLOCK_ASSERT(sc);
- KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto",
- __func__, sc));
- if (sc->sc_ifflags & IFF_DEBUG)
- if_printf(sc->sc_ifp, "using proto %u\n", pr);
- if (lagg_protos[pr].pr_attach != NULL)
- lagg_protos[pr].pr_attach(sc);
- sc->sc_proto = pr;
- }
- static void
- lagg_proto_detach(struct lagg_softc *sc)
- {
- lagg_proto pr;
- LAGG_XLOCK_ASSERT(sc);
- pr = sc->sc_proto;
- sc->sc_proto = LAGG_PROTO_NONE;
- if (lagg_protos[pr].pr_detach != NULL)
- lagg_protos[pr].pr_detach(sc);
- }
- static inline int
- lagg_proto_start(struct lagg_softc *sc, struct mbuf *m)
- {
- return (lagg_protos[sc->sc_proto].pr_start(sc, m));
- }
- static inline struct mbuf *
- lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
- {
- return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m));
- }
- static int
- lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp)
- {
- if (lagg_protos[sc->sc_proto].pr_addport == NULL)
- return (0);
- else
- return (lagg_protos[sc->sc_proto].pr_addport(lp));
- }
- static void
- lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp)
- {
- if (lagg_protos[sc->sc_proto].pr_delport != NULL)
- lagg_protos[sc->sc_proto].pr_delport(lp);
- }
- static void
- lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp)
- {
- if (lagg_protos[sc->sc_proto].pr_linkstate != NULL)
- lagg_protos[sc->sc_proto].pr_linkstate(lp);
- }
- static void
- lagg_proto_init(struct lagg_softc *sc)
- {
- if (lagg_protos[sc->sc_proto].pr_init != NULL)
- lagg_protos[sc->sc_proto].pr_init(sc);
- }
- static void
- lagg_proto_stop(struct lagg_softc *sc)
- {
- if (lagg_protos[sc->sc_proto].pr_stop != NULL)
- lagg_protos[sc->sc_proto].pr_stop(sc);
- }
- static void
- lagg_proto_lladdr(struct lagg_softc *sc)
- {
- if (lagg_protos[sc->sc_proto].pr_lladdr != NULL)
- lagg_protos[sc->sc_proto].pr_lladdr(sc);
- }
- static void
- lagg_proto_request(struct lagg_softc *sc, void *v)
- {
- if (lagg_protos[sc->sc_proto].pr_request != NULL)
- lagg_protos[sc->sc_proto].pr_request(sc, v);
- }
- static void
- lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v)
- {
- if (lagg_protos[sc->sc_proto].pr_portreq != NULL)
- lagg_protos[sc->sc_proto].pr_portreq(lp, v);
- }
- /*
- * This routine is run via an vlan
- * config EVENT
- */
- static void
- lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
- {
- struct lagg_softc *sc = ifp->if_softc;
- struct lagg_port *lp;
- if (ifp->if_softc != arg) /* Not our event */
- return;
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
- LAGG_XUNLOCK(sc);
- }
- /*
- * This routine is run via an vlan
- * unconfig EVENT
- */
- static void
- lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
- {
- struct lagg_softc *sc = ifp->if_softc;
- struct lagg_port *lp;
- if (ifp->if_softc != arg) /* Not our event */
- return;
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
- LAGG_XUNLOCK(sc);
- }
- static int
- lagg_clone_create(struct if_clone *ifc, char *name, size_t len,
- struct ifc_data *ifd, struct ifnet **ifpp)
- {
- struct iflaggparam iflp;
- struct lagg_softc *sc;
- struct ifnet *ifp;
- int if_type;
- int error;
- static const uint8_t eaddr[LAGG_ADDR_LEN];
- if (ifd->params != NULL) {
- error = ifc_copyin(ifd, &iflp, sizeof(iflp));
- if (error)
- return (error);
- switch (iflp.lagg_type) {
- case LAGG_TYPE_ETHERNET:
- if_type = IFT_ETHER;
- break;
- case LAGG_TYPE_INFINIBAND:
- if_type = IFT_INFINIBAND;
- break;
- default:
- return (EINVAL);
- }
- } else {
- if_type = IFT_ETHER;
- }
- sc = malloc(sizeof(*sc), M_LAGG, M_WAITOK | M_ZERO);
- ifp = sc->sc_ifp = if_alloc(if_type);
- LAGG_SX_INIT(sc);
- mtx_init(&sc->sc_mtx, "lagg-mtx", NULL, MTX_DEF);
- callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0);
- LAGG_XLOCK(sc);
- if (V_def_use_flowid)
- sc->sc_opts |= LAGG_OPT_USE_FLOWID;
- if (V_def_use_numa)
- sc->sc_opts |= LAGG_OPT_USE_NUMA;
- sc->flowid_shift = V_def_flowid_shift;
- /* Hash all layers by default */
- sc->sc_flags = MBUF_HASHFLAG_L2 | MBUF_HASHFLAG_L3 | MBUF_HASHFLAG_L4;
- lagg_proto_attach(sc, LAGG_PROTO_DEFAULT);
- CK_SLIST_INIT(&sc->sc_ports);
- switch (if_type) {
- case IFT_ETHER:
- /* Initialise pseudo media types */
- ifmedia_init(&sc->sc_media, 0, lagg_media_change,
- lagg_media_status);
- ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
- ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
- if_initname(ifp, laggname, ifd->unit);
- ifp->if_transmit = lagg_transmit_ethernet;
- break;
- case IFT_INFINIBAND:
- if_initname(ifp, laggname, ifd->unit);
- ifp->if_transmit = lagg_transmit_infiniband;
- break;
- default:
- break;
- }
- ifp->if_softc = sc;
- ifp->if_qflush = lagg_qflush;
- ifp->if_init = lagg_init;
- ifp->if_ioctl = lagg_ioctl;
- ifp->if_get_counter = lagg_get_counter;
- ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST;
- #if defined(KERN_TLS) || defined(RATELIMIT)
- ifp->if_snd_tag_alloc = lagg_snd_tag_alloc;
- ifp->if_ratelimit_query = lagg_ratelimit_query;
- #endif
- ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS;
- /*
- * Attach as an ordinary ethernet device, children will be attached
- * as special device IFT_IEEE8023ADLAG or IFT_INFINIBANDLAG.
- */
- switch (if_type) {
- case IFT_ETHER:
- ether_ifattach(ifp, eaddr);
- break;
- case IFT_INFINIBAND:
- infiniband_ifattach(ifp, eaddr, sc->sc_bcast_addr);
- break;
- default:
- break;
- }
- sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
- lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
- sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
- lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
- /* Insert into the global list of laggs */
- LAGG_LIST_LOCK();
- SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries);
- LAGG_LIST_UNLOCK();
- LAGG_XUNLOCK(sc);
- *ifpp = ifp;
- return (0);
- }
- static int
- lagg_clone_destroy(struct if_clone *ifc, struct ifnet *ifp, uint32_t flags)
- {
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- struct lagg_port *lp;
- LAGG_XLOCK(sc);
- sc->sc_destroying = 1;
- lagg_stop(sc);
- ifp->if_flags &= ~IFF_UP;
- EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
- EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
- /* Shutdown and remove lagg ports */
- while ((lp = CK_SLIST_FIRST(&sc->sc_ports)) != NULL)
- lagg_port_destroy(lp, 1);
- /* Unhook the aggregation protocol */
- lagg_proto_detach(sc);
- LAGG_XUNLOCK(sc);
- switch (ifp->if_type) {
- case IFT_ETHER:
- ether_ifdetach(ifp);
- ifmedia_removeall(&sc->sc_media);
- break;
- case IFT_INFINIBAND:
- infiniband_ifdetach(ifp);
- break;
- default:
- break;
- }
- if_free(ifp);
- LAGG_LIST_LOCK();
- SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries);
- LAGG_LIST_UNLOCK();
- mtx_destroy(&sc->sc_mtx);
- LAGG_SX_DESTROY(sc);
- free(sc, M_LAGG);
- return (0);
- }
- static void
- lagg_capabilities(struct lagg_softc *sc)
- {
- struct lagg_port *lp;
- int cap, cap2, ena, ena2, pena, pena2;
- uint64_t hwa;
- struct ifnet_hw_tsomax hw_tsomax;
- LAGG_XLOCK_ASSERT(sc);
- /* Get common enabled capabilities for the lagg ports */
- ena = ena2 = ~0;
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- ena &= lp->lp_ifp->if_capenable;
- ena2 &= lp->lp_ifp->if_capenable2;
- }
- if (CK_SLIST_FIRST(&sc->sc_ports) == NULL)
- ena = ena2 = 0;
- /*
- * Apply common enabled capabilities back to the lagg ports.
- * May require several iterations if they are dependent.
- */
- do {
- pena = ena;
- pena2 = ena2;
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- lagg_setcaps(lp, ena, ena2);
- ena &= lp->lp_ifp->if_capenable;
- ena2 &= lp->lp_ifp->if_capenable2;
- }
- } while (pena != ena || pena2 != ena2);
- /* Get other capabilities from the lagg ports */
- cap = cap2 = ~0;
- hwa = ~(uint64_t)0;
- memset(&hw_tsomax, 0, sizeof(hw_tsomax));
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- cap &= lp->lp_ifp->if_capabilities;
- cap2 &= lp->lp_ifp->if_capabilities2;
- hwa &= lp->lp_ifp->if_hwassist;
- if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax);
- }
- if (CK_SLIST_FIRST(&sc->sc_ports) == NULL)
- cap = cap2 = hwa = 0;
- if (sc->sc_ifp->if_capabilities != cap ||
- sc->sc_ifp->if_capenable != ena ||
- sc->sc_ifp->if_capenable2 != ena2 ||
- sc->sc_ifp->if_hwassist != hwa ||
- if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) {
- sc->sc_ifp->if_capabilities = cap;
- sc->sc_ifp->if_capabilities2 = cap2;
- sc->sc_ifp->if_capenable = ena;
- sc->sc_ifp->if_capenable2 = ena2;
- sc->sc_ifp->if_hwassist = hwa;
- getmicrotime(&sc->sc_ifp->if_lastchange);
- if (sc->sc_ifflags & IFF_DEBUG)
- if_printf(sc->sc_ifp,
- "capabilities 0x%08x enabled 0x%08x\n", cap, ena);
- }
- }
- static int
- lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp)
- {
- struct lagg_softc *sc_ptr;
- struct lagg_port *lp, *tlp;
- struct ifreq ifr;
- int error, i, oldmtu;
- int if_type;
- uint64_t *pval;
- LAGG_XLOCK_ASSERT(sc);
- if (sc->sc_ifp == ifp) {
- if_printf(sc->sc_ifp,
- "cannot add a lagg to itself as a port\n");
- return (EINVAL);
- }
- if (sc->sc_destroying == 1)
- return (ENXIO);
- /* Limit the maximal number of lagg ports */
- if (sc->sc_count >= LAGG_MAX_PORTS)
- return (ENOSPC);
- /* Check if port has already been associated to a lagg */
- if (ifp->if_lagg != NULL) {
- /* Port is already in the current lagg? */
- lp = (struct lagg_port *)ifp->if_lagg;
- if (lp->lp_softc == sc)
- return (EEXIST);
- return (EBUSY);
- }
- switch (sc->sc_ifp->if_type) {
- case IFT_ETHER:
- /* XXX Disallow non-ethernet interfaces (this should be any of 802) */
- if (ifp->if_type != IFT_ETHER && ifp->if_type != IFT_L2VLAN)
- return (EPROTONOSUPPORT);
- if_type = IFT_IEEE8023ADLAG;
- break;
- case IFT_INFINIBAND:
- /* XXX Disallow non-infiniband interfaces */
- if (ifp->if_type != IFT_INFINIBAND)
- return (EPROTONOSUPPORT);
- if_type = IFT_INFINIBANDLAG;
- break;
- default:
- break;
- }
- /* Allow the first Ethernet member to define the MTU */
- oldmtu = -1;
- if (CK_SLIST_EMPTY(&sc->sc_ports)) {
- sc->sc_ifp->if_mtu = ifp->if_mtu;
- } else if (sc->sc_ifp->if_mtu != ifp->if_mtu) {
- if (ifp->if_ioctl == NULL) {
- if_printf(sc->sc_ifp, "cannot change MTU for %s\n",
- ifp->if_xname);
- return (EINVAL);
- }
- oldmtu = ifp->if_mtu;
- strlcpy(ifr.ifr_name, ifp->if_xname, sizeof(ifr.ifr_name));
- ifr.ifr_mtu = sc->sc_ifp->if_mtu;
- error = (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
- if (error != 0) {
- if_printf(sc->sc_ifp, "invalid MTU for %s\n",
- ifp->if_xname);
- return (error);
- }
- ifr.ifr_mtu = oldmtu;
- }
- lp = malloc(sizeof(struct lagg_port), M_LAGG, M_WAITOK | M_ZERO);
- lp->lp_softc = sc;
- /* Check if port is a stacked lagg */
- LAGG_LIST_LOCK();
- SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) {
- if (ifp == sc_ptr->sc_ifp) {
- LAGG_LIST_UNLOCK();
- free(lp, M_LAGG);
- if (oldmtu != -1)
- (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
- (caddr_t)&ifr);
- return (EINVAL);
- /* XXX disable stacking for the moment, its untested */
- #ifdef LAGG_PORT_STACKING
- lp->lp_flags |= LAGG_PORT_STACK;
- if (lagg_port_checkstacking(sc_ptr) >=
- LAGG_MAX_STACKING) {
- LAGG_LIST_UNLOCK();
- free(lp, M_LAGG);
- if (oldmtu != -1)
- (*ifp->if_ioctl)(ifp, SIOCSIFMTU,
- (caddr_t)&ifr);
- return (E2BIG);
- }
- #endif
- }
- }
- LAGG_LIST_UNLOCK();
- if_ref(ifp);
- lp->lp_ifp = ifp;
- bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ifp->if_addrlen);
- lp->lp_ifcapenable = ifp->if_capenable;
- if (CK_SLIST_EMPTY(&sc->sc_ports)) {
- bcopy(IF_LLADDR(ifp), IF_LLADDR(sc->sc_ifp), ifp->if_addrlen);
- lagg_proto_lladdr(sc);
- EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
- } else {
- if_setlladdr(ifp, IF_LLADDR(sc->sc_ifp), ifp->if_addrlen);
- }
- lagg_setflags(lp, 1);
- if (CK_SLIST_EMPTY(&sc->sc_ports))
- sc->sc_primary = lp;
- /* Change the interface type */
- lp->lp_iftype = ifp->if_type;
- ifp->if_type = if_type;
- ifp->if_lagg = lp;
- lp->lp_ioctl = ifp->if_ioctl;
- ifp->if_ioctl = lagg_port_ioctl;
- lp->lp_output = ifp->if_output;
- ifp->if_output = lagg_port_output;
- /* Read port counters */
- pval = lp->port_counters.val;
- for (i = 0; i < IFCOUNTERS; i++, pval++)
- *pval = ifp->if_get_counter(ifp, i);
- /*
- * Insert into the list of ports.
- * Keep ports sorted by if_index. It is handy, when configuration
- * is predictable and `ifconfig laggN create ...` command
- * will lead to the same result each time.
- */
- CK_SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) {
- if (tlp->lp_ifp->if_index < ifp->if_index && (
- CK_SLIST_NEXT(tlp, lp_entries) == NULL ||
- ((struct lagg_port*)CK_SLIST_NEXT(tlp, lp_entries))->lp_ifp->if_index >
- ifp->if_index))
- break;
- }
- if (tlp != NULL)
- CK_SLIST_INSERT_AFTER(tlp, lp, lp_entries);
- else
- CK_SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries);
- sc->sc_count++;
- lagg_setmulti(lp);
- if ((error = lagg_proto_addport(sc, lp)) != 0) {
- /* Remove the port, without calling pr_delport. */
- lagg_port_destroy(lp, 0);
- if (oldmtu != -1)
- (*ifp->if_ioctl)(ifp, SIOCSIFMTU, (caddr_t)&ifr);
- return (error);
- }
- /* Update lagg capabilities */
- lagg_capabilities(sc);
- lagg_linkstate(sc);
- return (0);
- }
- #ifdef LAGG_PORT_STACKING
- static int
- lagg_port_checkstacking(struct lagg_softc *sc)
- {
- struct lagg_softc *sc_ptr;
- struct lagg_port *lp;
- int m = 0;
- LAGG_SXLOCK_ASSERT(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (lp->lp_flags & LAGG_PORT_STACK) {
- sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc;
- m = MAX(m, lagg_port_checkstacking(sc_ptr));
- }
- }
- return (m + 1);
- }
- #endif
- static void
- lagg_port_destroy_cb(epoch_context_t ec)
- {
- struct lagg_port *lp;
- struct ifnet *ifp;
- lp = __containerof(ec, struct lagg_port, lp_epoch_ctx);
- ifp = lp->lp_ifp;
- if_rele(ifp);
- free(lp, M_LAGG);
- }
- static int
- lagg_port_destroy(struct lagg_port *lp, int rundelport)
- {
- struct lagg_softc *sc = lp->lp_softc;
- struct lagg_port *lp_ptr, *lp0;
- struct ifnet *ifp = lp->lp_ifp;
- uint64_t *pval, vdiff;
- int i;
- LAGG_XLOCK_ASSERT(sc);
- if (rundelport)
- lagg_proto_delport(sc, lp);
- if (lp->lp_detaching == 0)
- lagg_clrmulti(lp);
- /* Restore interface */
- ifp->if_type = lp->lp_iftype;
- ifp->if_ioctl = lp->lp_ioctl;
- ifp->if_output = lp->lp_output;
- ifp->if_lagg = NULL;
- /* Update detached port counters */
- pval = lp->port_counters.val;
- for (i = 0; i < IFCOUNTERS; i++, pval++) {
- vdiff = ifp->if_get_counter(ifp, i) - *pval;
- sc->detached_counters.val[i] += vdiff;
- }
- /* Finally, remove the port from the lagg */
- CK_SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries);
- sc->sc_count--;
- /* Update the primary interface */
- if (lp == sc->sc_primary) {
- uint8_t lladdr[LAGG_ADDR_LEN];
- if ((lp0 = CK_SLIST_FIRST(&sc->sc_ports)) == NULL)
- bzero(&lladdr, LAGG_ADDR_LEN);
- else
- bcopy(lp0->lp_lladdr, lladdr, LAGG_ADDR_LEN);
- sc->sc_primary = lp0;
- if (sc->sc_destroying == 0) {
- bcopy(lladdr, IF_LLADDR(sc->sc_ifp), sc->sc_ifp->if_addrlen);
- lagg_proto_lladdr(sc);
- EVENTHANDLER_INVOKE(iflladdr_event, sc->sc_ifp);
- /*
- * Update lladdr for each port (new primary needs update
- * as well, to switch from old lladdr to its 'real' one).
- * We can skip this if the lagg is being destroyed.
- */
- CK_SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries)
- if_setlladdr(lp_ptr->lp_ifp, lladdr,
- lp_ptr->lp_ifp->if_addrlen);
- }
- }
- if (lp->lp_ifflags)
- if_printf(ifp, "%s: lp_ifflags unclean\n", __func__);
- if (lp->lp_detaching == 0) {
- lagg_setflags(lp, 0);
- lagg_setcaps(lp, lp->lp_ifcapenable, lp->lp_ifcapenable2);
- if_setlladdr(ifp, lp->lp_lladdr, ifp->if_addrlen);
- }
- /*
- * free port and release it's ifnet reference after a grace period has
- * elapsed.
- */
- NET_EPOCH_CALL(lagg_port_destroy_cb, &lp->lp_epoch_ctx);
- /* Update lagg capabilities */
- lagg_capabilities(sc);
- lagg_linkstate(sc);
- return (0);
- }
- static int
- lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
- {
- struct lagg_reqport *rp = (struct lagg_reqport *)data;
- struct lagg_softc *sc;
- struct lagg_port *lp = NULL;
- int error = 0;
- /* Should be checked by the caller */
- switch (ifp->if_type) {
- case IFT_IEEE8023ADLAG:
- case IFT_INFINIBANDLAG:
- if ((lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL)
- goto fallback;
- break;
- default:
- goto fallback;
- }
- switch (cmd) {
- case SIOCGLAGGPORT:
- if (rp->rp_portname[0] == '\0' ||
- ifunit(rp->rp_portname) != ifp) {
- error = EINVAL;
- break;
- }
- LAGG_SLOCK(sc);
- if (__predict_true((lp = ifp->if_lagg) != NULL &&
- lp->lp_softc == sc))
- lagg_port2req(lp, rp);
- else
- error = ENOENT; /* XXXGL: can happen? */
- LAGG_SUNLOCK(sc);
- break;
- case SIOCSIFCAP:
- case SIOCSIFCAPNV:
- if (lp->lp_ioctl == NULL) {
- error = EINVAL;
- break;
- }
- error = (*lp->lp_ioctl)(ifp, cmd, data);
- if (error)
- break;
- /* Update lagg interface capabilities */
- LAGG_XLOCK(sc);
- lagg_capabilities(sc);
- LAGG_XUNLOCK(sc);
- VLAN_CAPABILITIES(sc->sc_ifp);
- break;
- case SIOCSIFMTU:
- /* Do not allow the MTU to be changed once joined */
- error = EINVAL;
- break;
- default:
- goto fallback;
- }
- return (error);
- fallback:
- if (lp != NULL && lp->lp_ioctl != NULL)
- return ((*lp->lp_ioctl)(ifp, cmd, data));
- return (EINVAL);
- }
- /*
- * Requests counter @cnt data.
- *
- * Counter value is calculated the following way:
- * 1) for each port, sum difference between current and "initial" measurements.
- * 2) add lagg logical interface counters.
- * 3) add data from detached_counters array.
- *
- * We also do the following things on ports attach/detach:
- * 1) On port attach we store all counters it has into port_counter array.
- * 2) On port detach we add the different between "initial" and
- * current counters data to detached_counters array.
- */
- static uint64_t
- lagg_get_counter(struct ifnet *ifp, ift_counter cnt)
- {
- struct epoch_tracker et;
- struct lagg_softc *sc;
- struct lagg_port *lp;
- struct ifnet *lpifp;
- uint64_t newval, oldval, vsum;
- /* Revise this when we've got non-generic counters. */
- KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt));
- sc = (struct lagg_softc *)ifp->if_softc;
- vsum = 0;
- NET_EPOCH_ENTER(et);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- /* Saved attached value */
- oldval = lp->port_counters.val[cnt];
- /* current value */
- lpifp = lp->lp_ifp;
- newval = lpifp->if_get_counter(lpifp, cnt);
- /* Calculate diff and save new */
- vsum += newval - oldval;
- }
- NET_EPOCH_EXIT(et);
- /*
- * Add counter data which might be added by upper
- * layer protocols operating on logical interface.
- */
- vsum += if_get_counter_default(ifp, cnt);
- /*
- * Add counter data from detached ports counters
- */
- vsum += sc->detached_counters.val[cnt];
- return (vsum);
- }
- /*
- * For direct output to child ports.
- */
- static int
- lagg_port_output(struct ifnet *ifp, struct mbuf *m,
- const struct sockaddr *dst, struct route *ro)
- {
- struct lagg_port *lp = ifp->if_lagg;
- switch (dst->sa_family) {
- case pseudo_AF_HDRCMPLT:
- case AF_UNSPEC:
- if (lp != NULL)
- return ((*lp->lp_output)(ifp, m, dst, ro));
- }
- /* drop any other frames */
- m_freem(m);
- return (ENETDOWN);
- }
- static void
- lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp)
- {
- struct lagg_port *lp;
- struct lagg_softc *sc;
- if ((lp = ifp->if_lagg) == NULL)
- return;
- /* If the ifnet is just being renamed, don't do anything. */
- if (ifp->if_flags & IFF_RENAMING)
- return;
- sc = lp->lp_softc;
- LAGG_XLOCK(sc);
- lp->lp_detaching = 1;
- lagg_port_destroy(lp, 1);
- LAGG_XUNLOCK(sc);
- VLAN_CAPABILITIES(sc->sc_ifp);
- }
- static void
- lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp)
- {
- struct lagg_softc *sc = lp->lp_softc;
- strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname));
- strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname));
- rp->rp_prio = lp->lp_prio;
- rp->rp_flags = lp->lp_flags;
- lagg_proto_portreq(sc, lp, &rp->rp_psc);
- /* Add protocol specific flags */
- switch (sc->sc_proto) {
- case LAGG_PROTO_FAILOVER:
- if (lp == sc->sc_primary)
- rp->rp_flags |= LAGG_PORT_MASTER;
- if (lp == lagg_link_active(sc, sc->sc_primary))
- rp->rp_flags |= LAGG_PORT_ACTIVE;
- break;
- case LAGG_PROTO_ROUNDROBIN:
- case LAGG_PROTO_LOADBALANCE:
- case LAGG_PROTO_BROADCAST:
- if (LAGG_PORTACTIVE(lp))
- rp->rp_flags |= LAGG_PORT_ACTIVE;
- break;
- case LAGG_PROTO_LACP:
- /* LACP has a different definition of active */
- if (lacp_isactive(lp))
- rp->rp_flags |= LAGG_PORT_ACTIVE;
- if (lacp_iscollecting(lp))
- rp->rp_flags |= LAGG_PORT_COLLECTING;
- if (lacp_isdistributing(lp))
- rp->rp_flags |= LAGG_PORT_DISTRIBUTING;
- break;
- }
- }
- static void
- lagg_watchdog_infiniband(void *arg)
- {
- struct epoch_tracker et;
- struct lagg_softc *sc;
- struct lagg_port *lp;
- struct ifnet *ifp;
- struct ifnet *lp_ifp;
- sc = arg;
- /*
- * Because infiniband nodes have a fixed MAC address, which is
- * generated by the so-called GID, we need to regularly update
- * the link level address of the parent lagg<N> device when
- * the active port changes. Possibly we could piggy-back on
- * link up/down events aswell, but using a timer also provides
- * a guarantee against too frequent events. This operation
- * does not have to be atomic.
- */
- NET_EPOCH_ENTER(et);
- lp = lagg_link_active(sc, sc->sc_primary);
- if (lp != NULL) {
- ifp = sc->sc_ifp;
- lp_ifp = lp->lp_ifp;
- if (ifp != NULL && lp_ifp != NULL &&
- (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen) != 0 ||
- memcmp(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen) != 0)) {
- memcpy(IF_LLADDR(ifp), IF_LLADDR(lp_ifp), ifp->if_addrlen);
- memcpy(sc->sc_bcast_addr, lp_ifp->if_broadcastaddr, ifp->if_addrlen);
- CURVNET_SET(ifp->if_vnet);
- EVENTHANDLER_INVOKE(iflladdr_event, ifp);
- CURVNET_RESTORE();
- }
- }
- NET_EPOCH_EXIT(et);
- callout_reset(&sc->sc_watchdog, hz, &lagg_watchdog_infiniband, arg);
- }
- static void
- lagg_if_updown(struct lagg_softc *sc, bool up)
- {
- struct ifreq ifr = {};
- struct lagg_port *lp;
- LAGG_XLOCK_ASSERT(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (up)
- if_up(lp->lp_ifp);
- else
- if_down(lp->lp_ifp);
- if (lp->lp_ioctl != NULL)
- lp->lp_ioctl(lp->lp_ifp, SIOCSIFFLAGS, (caddr_t)&ifr);
- }
- }
- static void
- lagg_init(void *xsc)
- {
- struct lagg_softc *sc = (struct lagg_softc *)xsc;
- struct ifnet *ifp = sc->sc_ifp;
- struct lagg_port *lp;
- LAGG_XLOCK(sc);
- if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
- LAGG_XUNLOCK(sc);
- return;
- }
- ifp->if_drv_flags |= IFF_DRV_RUNNING;
- /*
- * Update the port lladdrs if needed.
- * This might be if_setlladdr() notification
- * that lladdr has been changed.
- */
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (memcmp(IF_LLADDR(ifp), IF_LLADDR(lp->lp_ifp),
- ifp->if_addrlen) != 0)
- if_setlladdr(lp->lp_ifp, IF_LLADDR(ifp), ifp->if_addrlen);
- }
- lagg_if_updown(sc, true);
- lagg_proto_init(sc);
- if (ifp->if_type == IFT_INFINIBAND) {
- mtx_lock(&sc->sc_mtx);
- lagg_watchdog_infiniband(sc);
- mtx_unlock(&sc->sc_mtx);
- }
- LAGG_XUNLOCK(sc);
- }
- static void
- lagg_stop(struct lagg_softc *sc)
- {
- struct ifnet *ifp = sc->sc_ifp;
- LAGG_XLOCK_ASSERT(sc);
- if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
- return;
- ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
- lagg_proto_stop(sc);
- mtx_lock(&sc->sc_mtx);
- callout_stop(&sc->sc_watchdog);
- mtx_unlock(&sc->sc_mtx);
- lagg_if_updown(sc, false);
- callout_drain(&sc->sc_watchdog);
- }
- static int
- lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
- {
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- struct lagg_reqall *ra = (struct lagg_reqall *)data;
- struct lagg_reqopts *ro = (struct lagg_reqopts *)data;
- struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf;
- struct lagg_reqflags *rf = (struct lagg_reqflags *)data;
- struct ifreq *ifr = (struct ifreq *)data;
- struct lagg_port *lp;
- struct ifnet *tpif;
- struct thread *td = curthread;
- char *buf, *outbuf;
- int count, buflen, len, error = 0, oldmtu;
- bzero(&rpbuf, sizeof(rpbuf));
- /* XXX: This can race with lagg_clone_destroy. */
- switch (cmd) {
- case SIOCGLAGG:
- LAGG_XLOCK(sc);
- buflen = sc->sc_count * sizeof(struct lagg_reqport);
- outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO);
- ra->ra_proto = sc->sc_proto;
- lagg_proto_request(sc, &ra->ra_psc);
- count = 0;
- buf = outbuf;
- len = min(ra->ra_size, buflen);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (len < sizeof(rpbuf))
- break;
- lagg_port2req(lp, &rpbuf);
- memcpy(buf, &rpbuf, sizeof(rpbuf));
- count++;
- buf += sizeof(rpbuf);
- len -= sizeof(rpbuf);
- }
- LAGG_XUNLOCK(sc);
- ra->ra_ports = count;
- ra->ra_size = count * sizeof(rpbuf);
- error = copyout(outbuf, ra->ra_port, ra->ra_size);
- free(outbuf, M_TEMP);
- break;
- case SIOCSLAGG:
- error = priv_check(td, PRIV_NET_LAGG);
- if (error)
- break;
- if (ra->ra_proto >= LAGG_PROTO_MAX) {
- error = EPROTONOSUPPORT;
- break;
- }
- /* Infiniband only supports the failover protocol. */
- if (ra->ra_proto != LAGG_PROTO_FAILOVER &&
- ifp->if_type == IFT_INFINIBAND) {
- error = EPROTONOSUPPORT;
- break;
- }
- LAGG_XLOCK(sc);
- lagg_proto_detach(sc);
- lagg_proto_attach(sc, ra->ra_proto);
- LAGG_XUNLOCK(sc);
- break;
- case SIOCGLAGGOPTS:
- LAGG_XLOCK(sc);
- ro->ro_opts = sc->sc_opts;
- if (sc->sc_proto == LAGG_PROTO_LACP) {
- struct lacp_softc *lsc;
- lsc = (struct lacp_softc *)sc->sc_psc;
- if (lsc->lsc_debug.lsc_tx_test != 0)
- ro->ro_opts |= LAGG_OPT_LACP_TXTEST;
- if (lsc->lsc_debug.lsc_rx_test != 0)
- ro->ro_opts |= LAGG_OPT_LACP_RXTEST;
- if (lsc->lsc_strict_mode != 0)
- ro->ro_opts |= LAGG_OPT_LACP_STRICT;
- if (lsc->lsc_fast_timeout != 0)
- ro->ro_opts |= LAGG_OPT_LACP_FAST_TIMO;
- ro->ro_active = sc->sc_active;
- } else {
- ro->ro_active = 0;
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- ro->ro_active += LAGG_PORTACTIVE(lp);
- }
- ro->ro_bkt = sc->sc_stride;
- ro->ro_flapping = sc->sc_flapping;
- ro->ro_flowid_shift = sc->flowid_shift;
- LAGG_XUNLOCK(sc);
- break;
- case SIOCSLAGGOPTS:
- error = priv_check(td, PRIV_NET_LAGG);
- if (error)
- break;
- /*
- * The stride option was added without defining a corresponding
- * LAGG_OPT flag, so handle a non-zero value before checking
- * anything else to preserve compatibility.
- */
- LAGG_XLOCK(sc);
- if (ro->ro_opts == 0 && ro->ro_bkt != 0) {
- if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN) {
- LAGG_XUNLOCK(sc);
- error = EINVAL;
- break;
- }
- sc->sc_stride = ro->ro_bkt;
- }
- if (ro->ro_opts == 0) {
- LAGG_XUNLOCK(sc);
- break;
- }
- /*
- * Set options. LACP options are stored in sc->sc_psc,
- * not in sc_opts.
- */
- int valid, lacp;
- switch (ro->ro_opts) {
- case LAGG_OPT_USE_FLOWID:
- case -LAGG_OPT_USE_FLOWID:
- case LAGG_OPT_USE_NUMA:
- case -LAGG_OPT_USE_NUMA:
- case LAGG_OPT_FLOWIDSHIFT:
- case LAGG_OPT_RR_LIMIT:
- valid = 1;
- lacp = 0;
- break;
- case LAGG_OPT_LACP_TXTEST:
- case -LAGG_OPT_LACP_TXTEST:
- case LAGG_OPT_LACP_RXTEST:
- case -LAGG_OPT_LACP_RXTEST:
- case LAGG_OPT_LACP_STRICT:
- case -LAGG_OPT_LACP_STRICT:
- case LAGG_OPT_LACP_FAST_TIMO:
- case -LAGG_OPT_LACP_FAST_TIMO:
- valid = lacp = 1;
- break;
- default:
- valid = lacp = 0;
- break;
- }
- if (valid == 0 ||
- (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) {
- /* Invalid combination of options specified. */
- error = EINVAL;
- LAGG_XUNLOCK(sc);
- break; /* Return from SIOCSLAGGOPTS. */
- }
- /*
- * Store new options into sc->sc_opts except for
- * FLOWIDSHIFT, RR and LACP options.
- */
- if (lacp == 0) {
- if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT)
- sc->flowid_shift = ro->ro_flowid_shift;
- else if (ro->ro_opts == LAGG_OPT_RR_LIMIT) {
- if (sc->sc_proto != LAGG_PROTO_ROUNDROBIN ||
- ro->ro_bkt == 0) {
- error = EINVAL;
- LAGG_XUNLOCK(sc);
- break;
- }
- sc->sc_stride = ro->ro_bkt;
- } else if (ro->ro_opts > 0)
- sc->sc_opts |= ro->ro_opts;
- else
- sc->sc_opts &= ~ro->ro_opts;
- } else {
- struct lacp_softc *lsc;
- struct lacp_port *lp;
- lsc = (struct lacp_softc *)sc->sc_psc;
- switch (ro->ro_opts) {
- case LAGG_OPT_LACP_TXTEST:
- lsc->lsc_debug.lsc_tx_test = 1;
- break;
- case -LAGG_OPT_LACP_TXTEST:
- lsc->lsc_debug.lsc_tx_test = 0;
- break;
- case LAGG_OPT_LACP_RXTEST:
- lsc->lsc_debug.lsc_rx_test = 1;
- break;
- case -LAGG_OPT_LACP_RXTEST:
- lsc->lsc_debug.lsc_rx_test = 0;
- break;
- case LAGG_OPT_LACP_STRICT:
- lsc->lsc_strict_mode = 1;
- break;
- case -LAGG_OPT_LACP_STRICT:
- lsc->lsc_strict_mode = 0;
- break;
- case LAGG_OPT_LACP_FAST_TIMO:
- LACP_LOCK(lsc);
- LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
- lp->lp_state |= LACP_STATE_TIMEOUT;
- LACP_UNLOCK(lsc);
- lsc->lsc_fast_timeout = 1;
- break;
- case -LAGG_OPT_LACP_FAST_TIMO:
- LACP_LOCK(lsc);
- LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
- lp->lp_state &= ~LACP_STATE_TIMEOUT;
- LACP_UNLOCK(lsc);
- lsc->lsc_fast_timeout = 0;
- break;
- }
- }
- LAGG_XUNLOCK(sc);
- break;
- case SIOCGLAGGFLAGS:
- rf->rf_flags = 0;
- LAGG_XLOCK(sc);
- if (sc->sc_flags & MBUF_HASHFLAG_L2)
- rf->rf_flags |= LAGG_F_HASHL2;
- if (sc->sc_flags & MBUF_HASHFLAG_L3)
- rf->rf_flags |= LAGG_F_HASHL3;
- if (sc->sc_flags & MBUF_HASHFLAG_L4)
- rf->rf_flags |= LAGG_F_HASHL4;
- LAGG_XUNLOCK(sc);
- break;
- case SIOCSLAGGHASH:
- error = priv_check(td, PRIV_NET_LAGG);
- if (error)
- break;
- if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) {
- error = EINVAL;
- break;
- }
- LAGG_XLOCK(sc);
- sc->sc_flags = 0;
- if (rf->rf_flags & LAGG_F_HASHL2)
- sc->sc_flags |= MBUF_HASHFLAG_L2;
- if (rf->rf_flags & LAGG_F_HASHL3)
- sc->sc_flags |= MBUF_HASHFLAG_L3;
- if (rf->rf_flags & LAGG_F_HASHL4)
- sc->sc_flags |= MBUF_HASHFLAG_L4;
- LAGG_XUNLOCK(sc);
- break;
- case SIOCGLAGGPORT:
- if (rp->rp_portname[0] == '\0' ||
- (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
- error = EINVAL;
- break;
- }
- LAGG_SLOCK(sc);
- if (__predict_true((lp = tpif->if_lagg) != NULL &&
- lp->lp_softc == sc))
- lagg_port2req(lp, rp);
- else
- error = ENOENT; /* XXXGL: can happen? */
- LAGG_SUNLOCK(sc);
- if_rele(tpif);
- break;
- case SIOCSLAGGPORT:
- error = priv_check(td, PRIV_NET_LAGG);
- if (error)
- break;
- if (rp->rp_portname[0] == '\0' ||
- (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
- error = EINVAL;
- break;
- }
- #ifdef INET6
- /*
- * A laggport interface should not have inet6 address
- * because two interfaces with a valid link-local
- * scope zone must not be merged in any form. This
- * restriction is needed to prevent violation of
- * link-local scope zone. Attempts to add a laggport
- * interface which has inet6 addresses triggers
- * removal of all inet6 addresses on the member
- * interface.
- */
- if (in6ifa_llaonifp(tpif)) {
- in6_ifdetach(tpif);
- if_printf(sc->sc_ifp,
- "IPv6 addresses on %s have been removed "
- "before adding it as a member to prevent "
- "IPv6 address scope violation.\n",
- tpif->if_xname);
- }
- #endif
- oldmtu = ifp->if_mtu;
- LAGG_XLOCK(sc);
- error = lagg_port_create(sc, tpif);
- LAGG_XUNLOCK(sc);
- if_rele(tpif);
- /*
- * LAGG MTU may change during addition of the first port.
- * If it did, do network layer specific procedure.
- */
- if (ifp->if_mtu != oldmtu)
- if_notifymtu(ifp);
- VLAN_CAPABILITIES(ifp);
- break;
- case SIOCSLAGGDELPORT:
- error = priv_check(td, PRIV_NET_LAGG);
- if (error)
- break;
- if (rp->rp_portname[0] == '\0' ||
- (tpif = ifunit_ref(rp->rp_portname)) == NULL) {
- error = EINVAL;
- break;
- }
- LAGG_XLOCK(sc);
- if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL ||
- lp->lp_softc != sc) {
- error = ENOENT;
- LAGG_XUNLOCK(sc);
- if_rele(tpif);
- break;
- }
- error = lagg_port_destroy(lp, 1);
- LAGG_XUNLOCK(sc);
- if_rele(tpif);
- VLAN_CAPABILITIES(ifp);
- break;
- case SIOCSIFFLAGS:
- /* Set flags on ports too */
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- lagg_setflags(lp, 1);
- }
- if (!(ifp->if_flags & IFF_UP) &&
- (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
- /*
- * If interface is marked down and it is running,
- * then stop and disable it.
- */
- lagg_stop(sc);
- LAGG_XUNLOCK(sc);
- } else if ((ifp->if_flags & IFF_UP) &&
- !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
- /*
- * If interface is marked up and it is stopped, then
- * start it.
- */
- LAGG_XUNLOCK(sc);
- (*ifp->if_init)(sc);
- } else
- LAGG_XUNLOCK(sc);
- break;
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- lagg_clrmulti(lp);
- lagg_setmulti(lp);
- }
- LAGG_XUNLOCK(sc);
- error = 0;
- break;
- case SIOCSIFMEDIA:
- case SIOCGIFMEDIA:
- if (ifp->if_type == IFT_INFINIBAND)
- error = EINVAL;
- else
- error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
- break;
- case SIOCSIFCAP:
- case SIOCSIFCAPNV:
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (lp->lp_ioctl != NULL)
- (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
- }
- lagg_capabilities(sc);
- LAGG_XUNLOCK(sc);
- VLAN_CAPABILITIES(ifp);
- error = 0;
- break;
- case SIOCGIFCAPNV:
- error = 0;
- break;
- case SIOCSIFMTU:
- LAGG_XLOCK(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (lp->lp_ioctl != NULL)
- error = (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
- else
- error = EINVAL;
- if (error != 0) {
- if_printf(ifp,
- "failed to change MTU to %d on port %s, "
- "reverting all ports to original MTU (%d)\n",
- ifr->ifr_mtu, lp->lp_ifp->if_xname, ifp->if_mtu);
- break;
- }
- }
- if (error == 0) {
- ifp->if_mtu = ifr->ifr_mtu;
- } else {
- /* set every port back to the original MTU */
- ifr->ifr_mtu = ifp->if_mtu;
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (lp->lp_ioctl != NULL)
- (*lp->lp_ioctl)(lp->lp_ifp, cmd, data);
- }
- }
- lagg_capabilities(sc);
- LAGG_XUNLOCK(sc);
- VLAN_CAPABILITIES(ifp);
- break;
- default:
- error = ether_ioctl(ifp, cmd, data);
- break;
- }
- return (error);
- }
- #if defined(KERN_TLS) || defined(RATELIMIT)
- #ifdef RATELIMIT
- static const struct if_snd_tag_sw lagg_snd_tag_ul_sw = {
- .snd_tag_modify = lagg_snd_tag_modify,
- .snd_tag_query = lagg_snd_tag_query,
- .snd_tag_free = lagg_snd_tag_free,
- .next_snd_tag = lagg_next_snd_tag,
- .type = IF_SND_TAG_TYPE_UNLIMITED
- };
- static const struct if_snd_tag_sw lagg_snd_tag_rl_sw = {
- .snd_tag_modify = lagg_snd_tag_modify,
- .snd_tag_query = lagg_snd_tag_query,
- .snd_tag_free = lagg_snd_tag_free,
- .next_snd_tag = lagg_next_snd_tag,
- .type = IF_SND_TAG_TYPE_RATE_LIMIT
- };
- #endif
- #ifdef KERN_TLS
- static const struct if_snd_tag_sw lagg_snd_tag_tls_sw = {
- .snd_tag_modify = lagg_snd_tag_modify,
- .snd_tag_query = lagg_snd_tag_query,
- .snd_tag_free = lagg_snd_tag_free,
- .next_snd_tag = lagg_next_snd_tag,
- .type = IF_SND_TAG_TYPE_TLS
- };
- #ifdef RATELIMIT
- static const struct if_snd_tag_sw lagg_snd_tag_tls_rl_sw = {
- .snd_tag_modify = lagg_snd_tag_modify,
- .snd_tag_query = lagg_snd_tag_query,
- .snd_tag_free = lagg_snd_tag_free,
- .next_snd_tag = lagg_next_snd_tag,
- .type = IF_SND_TAG_TYPE_TLS_RATE_LIMIT
- };
- #endif
- #endif
- static inline struct lagg_snd_tag *
- mst_to_lst(struct m_snd_tag *mst)
- {
- return (__containerof(mst, struct lagg_snd_tag, com));
- }
- /*
- * Look up the port used by a specific flow. This only works for lagg
- * protocols with deterministic port mappings (e.g. not roundrobin).
- * In addition protocols which use a hash to map flows to ports must
- * be configured to use the mbuf flowid rather than hashing packet
- * contents.
- */
- static struct lagg_port *
- lookup_snd_tag_port(struct ifnet *ifp, uint32_t flowid, uint32_t flowtype,
- uint8_t numa_domain)
- {
- struct lagg_softc *sc;
- struct lagg_port *lp;
- struct lagg_lb *lb;
- uint32_t hash, p;
- int err;
- sc = ifp->if_softc;
- switch (sc->sc_proto) {
- case LAGG_PROTO_FAILOVER:
- return (lagg_link_active(sc, sc->sc_primary));
- case LAGG_PROTO_LOADBALANCE:
- if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
- flowtype == M_HASHTYPE_NONE)
- return (NULL);
- p = flowid >> sc->flowid_shift;
- p %= sc->sc_count;
- lb = (struct lagg_lb *)sc->sc_psc;
- lp = lb->lb_ports[p];
- return (lagg_link_active(sc, lp));
- case LAGG_PROTO_LACP:
- if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) == 0 ||
- flowtype == M_HASHTYPE_NONE)
- return (NULL);
- hash = flowid >> sc->flowid_shift;
- return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, &err));
- default:
- return (NULL);
- }
- }
- static int
- lagg_snd_tag_alloc(struct ifnet *ifp,
- union if_snd_tag_alloc_params *params,
- struct m_snd_tag **ppmt)
- {
- struct epoch_tracker et;
- const struct if_snd_tag_sw *sw;
- struct lagg_snd_tag *lst;
- struct lagg_port *lp;
- struct ifnet *lp_ifp;
- struct m_snd_tag *mst;
- int error;
- switch (params->hdr.type) {
- #ifdef RATELIMIT
- case IF_SND_TAG_TYPE_UNLIMITED:
- sw = &lagg_snd_tag_ul_sw;
- break;
- case IF_SND_TAG_TYPE_RATE_LIMIT:
- sw = &lagg_snd_tag_rl_sw;
- break;
- #endif
- #ifdef KERN_TLS
- case IF_SND_TAG_TYPE_TLS:
- sw = &lagg_snd_tag_tls_sw;
- break;
- case IF_SND_TAG_TYPE_TLS_RX:
- /* Return tag from port interface directly. */
- sw = NULL;
- break;
- #ifdef RATELIMIT
- case IF_SND_TAG_TYPE_TLS_RATE_LIMIT:
- sw = &lagg_snd_tag_tls_rl_sw;
- break;
- #endif
- #endif
- default:
- return (EOPNOTSUPP);
- }
- NET_EPOCH_ENTER(et);
- lp = lookup_snd_tag_port(ifp, params->hdr.flowid,
- params->hdr.flowtype, params->hdr.numa_domain);
- if (lp == NULL) {
- NET_EPOCH_EXIT(et);
- return (EOPNOTSUPP);
- }
- if (lp->lp_ifp == NULL) {
- NET_EPOCH_EXIT(et);
- return (EOPNOTSUPP);
- }
- lp_ifp = lp->lp_ifp;
- if_ref(lp_ifp);
- NET_EPOCH_EXIT(et);
- if (sw != NULL) {
- lst = malloc(sizeof(*lst), M_LAGG, M_NOWAIT);
- if (lst == NULL) {
- if_rele(lp_ifp);
- return (ENOMEM);
- }
- } else
- lst = NULL;
- error = m_snd_tag_alloc(lp_ifp, params, &mst);
- if_rele(lp_ifp);
- if (error) {
- free(lst, M_LAGG);
- return (error);
- }
- if (sw != NULL) {
- m_snd_tag_init(&lst->com, ifp, sw);
- lst->tag = mst;
- *ppmt = &lst->com;
- } else
- *ppmt = mst;
- return (0);
- }
- static struct m_snd_tag *
- lagg_next_snd_tag(struct m_snd_tag *mst)
- {
- struct lagg_snd_tag *lst;
- lst = mst_to_lst(mst);
- return (lst->tag);
- }
- static int
- lagg_snd_tag_modify(struct m_snd_tag *mst,
- union if_snd_tag_modify_params *params)
- {
- struct lagg_snd_tag *lst;
- lst = mst_to_lst(mst);
- return (lst->tag->sw->snd_tag_modify(lst->tag, params));
- }
- static int
- lagg_snd_tag_query(struct m_snd_tag *mst,
- union if_snd_tag_query_params *params)
- {
- struct lagg_snd_tag *lst;
- lst = mst_to_lst(mst);
- return (lst->tag->sw->snd_tag_query(lst->tag, params));
- }
- static void
- lagg_snd_tag_free(struct m_snd_tag *mst)
- {
- struct lagg_snd_tag *lst;
- lst = mst_to_lst(mst);
- m_snd_tag_rele(lst->tag);
- free(lst, M_LAGG);
- }
- static void
- lagg_ratelimit_query(struct ifnet *ifp __unused, struct if_ratelimit_query_results *q)
- {
- /*
- * For lagg, we have an indirect
- * interface. The caller needs to
- * get a ratelimit tag on the actual
- * interface the flow will go on.
- */
- q->rate_table = NULL;
- q->flags = RT_IS_INDIRECT;
- q->max_flows = 0;
- q->number_of_rates = 0;
- }
- #endif
- static int
- lagg_setmulti(struct lagg_port *lp)
- {
- struct lagg_softc *sc = lp->lp_softc;
- struct ifnet *ifp = lp->lp_ifp;
- struct ifnet *scifp = sc->sc_ifp;
- struct lagg_mc *mc;
- struct ifmultiaddr *ifma;
- int error;
- IF_ADDR_WLOCK(scifp);
- CK_STAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) {
- if (ifma->ifma_addr->sa_family != AF_LINK)
- continue;
- mc = malloc(sizeof(struct lagg_mc), M_LAGG, M_NOWAIT);
- if (mc == NULL) {
- IF_ADDR_WUNLOCK(scifp);
- return (ENOMEM);
- }
- bcopy(ifma->ifma_addr, &mc->mc_addr, ifma->ifma_addr->sa_len);
- mc->mc_addr.sdl_index = ifp->if_index;
- mc->mc_ifma = NULL;
- SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries);
- }
- IF_ADDR_WUNLOCK(scifp);
- SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) {
- error = if_addmulti(ifp,
- (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma);
- if (error)
- return (error);
- }
- return (0);
- }
- static int
- lagg_clrmulti(struct lagg_port *lp)
- {
- struct lagg_mc *mc;
- LAGG_XLOCK_ASSERT(lp->lp_softc);
- while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) {
- SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries);
- if (mc->mc_ifma && lp->lp_detaching == 0)
- if_delmulti_ifma(mc->mc_ifma);
- free(mc, M_LAGG);
- }
- return (0);
- }
- static void
- lagg_setcaps(struct lagg_port *lp, int cap, int cap2)
- {
- struct ifreq ifr;
- struct siocsifcapnv_driver_data drv_ioctl_data;
- if (lp->lp_ifp->if_capenable == cap &&
- lp->lp_ifp->if_capenable2 == cap2)
- return;
- if (lp->lp_ioctl == NULL)
- return;
- /* XXX */
- if ((lp->lp_ifp->if_capabilities & IFCAP_NV) != 0) {
- drv_ioctl_data.reqcap = cap;
- drv_ioctl_data.reqcap2 = cap2;
- drv_ioctl_data.nvcap = NULL;
- (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAPNV,
- (caddr_t)&drv_ioctl_data);
- } else {
- ifr.ifr_reqcap = cap;
- (*lp->lp_ioctl)(lp->lp_ifp, SIOCSIFCAP, (caddr_t)&ifr);
- }
- }
- /* Handle a ref counted flag that should be set on the lagg port as well */
- static int
- lagg_setflag(struct lagg_port *lp, int flag, int status,
- int (*func)(struct ifnet *, int))
- {
- struct lagg_softc *sc = lp->lp_softc;
- struct ifnet *scifp = sc->sc_ifp;
- struct ifnet *ifp = lp->lp_ifp;
- int error;
- LAGG_XLOCK_ASSERT(sc);
- status = status ? (scifp->if_flags & flag) : 0;
- /* Now "status" contains the flag value or 0 */
- /*
- * See if recorded ports status is different from what
- * we want it to be. If it is, flip it. We record ports
- * status in lp_ifflags so that we won't clear ports flag
- * we haven't set. In fact, we don't clear or set ports
- * flags directly, but get or release references to them.
- * That's why we can be sure that recorded flags still are
- * in accord with actual ports flags.
- */
- if (status != (lp->lp_ifflags & flag)) {
- error = (*func)(ifp, status);
- if (error)
- return (error);
- lp->lp_ifflags &= ~flag;
- lp->lp_ifflags |= status;
- }
- return (0);
- }
- /*
- * Handle IFF_* flags that require certain changes on the lagg port
- * if "status" is true, update ports flags respective to the lagg
- * if "status" is false, forcedly clear the flags set on port.
- */
- static int
- lagg_setflags(struct lagg_port *lp, int status)
- {
- int error, i;
- for (i = 0; lagg_pflags[i].flag; i++) {
- error = lagg_setflag(lp, lagg_pflags[i].flag,
- status, lagg_pflags[i].func);
- if (error)
- return (error);
- }
- return (0);
- }
- static int
- lagg_transmit_ethernet(struct ifnet *ifp, struct mbuf *m)
- {
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- NET_EPOCH_ASSERT();
- #if defined(KERN_TLS) || defined(RATELIMIT)
- if (m->m_pkthdr.csum_flags & CSUM_SND_TAG)
- MPASS(m->m_pkthdr.snd_tag->ifp == ifp);
- #endif
- /* We need a Tx algorithm and at least one port */
- if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
- m_freem(m);
- if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
- return (ENXIO);
- }
- ETHER_BPF_MTAP(ifp, m);
- return (lagg_proto_start(sc, m));
- }
- static int
- lagg_transmit_infiniband(struct ifnet *ifp, struct mbuf *m)
- {
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- NET_EPOCH_ASSERT();
- #if defined(KERN_TLS) || defined(RATELIMIT)
- if (m->m_pkthdr.csum_flags & CSUM_SND_TAG)
- MPASS(m->m_pkthdr.snd_tag->ifp == ifp);
- #endif
- /* We need a Tx algorithm and at least one port */
- if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) {
- m_freem(m);
- if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
- return (ENXIO);
- }
- infiniband_bpf_mtap(ifp, m);
- return (lagg_proto_start(sc, m));
- }
- /*
- * The ifp->if_qflush entry point for lagg(4) is no-op.
- */
- static void
- lagg_qflush(struct ifnet *ifp __unused)
- {
- }
- static struct mbuf *
- lagg_input_ethernet(struct ifnet *ifp, struct mbuf *m)
- {
- struct lagg_port *lp = ifp->if_lagg;
- struct lagg_softc *sc = lp->lp_softc;
- struct ifnet *scifp = sc->sc_ifp;
- NET_EPOCH_ASSERT();
- if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
- lp->lp_detaching != 0 ||
- sc->sc_proto == LAGG_PROTO_NONE) {
- m_freem(m);
- return (NULL);
- }
- m = lagg_proto_input(sc, lp, m);
- if (m != NULL) {
- ETHER_BPF_MTAP(scifp, m);
- if ((scifp->if_flags & IFF_MONITOR) != 0) {
- m_freem(m);
- m = NULL;
- }
- }
- #ifdef DEV_NETMAP
- if (m != NULL && scifp->if_capenable & IFCAP_NETMAP) {
- scifp->if_input(scifp, m);
- m = NULL;
- }
- #endif /* DEV_NETMAP */
- return (m);
- }
- static struct mbuf *
- lagg_input_infiniband(struct ifnet *ifp, struct mbuf *m)
- {
- struct lagg_port *lp = ifp->if_lagg;
- struct lagg_softc *sc = lp->lp_softc;
- struct ifnet *scifp = sc->sc_ifp;
- NET_EPOCH_ASSERT();
- if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
- lp->lp_detaching != 0 ||
- sc->sc_proto == LAGG_PROTO_NONE) {
- m_freem(m);
- return (NULL);
- }
- m = lagg_proto_input(sc, lp, m);
- if (m != NULL) {
- infiniband_bpf_mtap(scifp, m);
- if ((scifp->if_flags & IFF_MONITOR) != 0) {
- m_freem(m);
- m = NULL;
- }
- }
- return (m);
- }
- static int
- lagg_media_change(struct ifnet *ifp)
- {
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- if (sc->sc_ifflags & IFF_DEBUG)
- printf("%s\n", __func__);
- /* Ignore */
- return (0);
- }
- static void
- lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr)
- {
- struct epoch_tracker et;
- struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc;
- struct lagg_port *lp;
- imr->ifm_status = IFM_AVALID;
- imr->ifm_active = IFM_ETHER | IFM_AUTO;
- NET_EPOCH_ENTER(et);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (LAGG_PORTACTIVE(lp))
- imr->ifm_status |= IFM_ACTIVE;
- }
- NET_EPOCH_EXIT(et);
- }
- static void
- lagg_linkstate(struct lagg_softc *sc)
- {
- struct epoch_tracker et;
- struct lagg_port *lp;
- int new_link = LINK_STATE_DOWN;
- uint64_t speed;
- LAGG_XLOCK_ASSERT(sc);
- /* LACP handles link state itself */
- if (sc->sc_proto == LAGG_PROTO_LACP)
- return;
- /* Our link is considered up if at least one of our ports is active */
- NET_EPOCH_ENTER(et);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (lp->lp_ifp->if_link_state == LINK_STATE_UP) {
- new_link = LINK_STATE_UP;
- break;
- }
- }
- NET_EPOCH_EXIT(et);
- if_link_state_change(sc->sc_ifp, new_link);
- /* Update if_baudrate to reflect the max possible speed */
- switch (sc->sc_proto) {
- case LAGG_PROTO_FAILOVER:
- sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ?
- sc->sc_primary->lp_ifp->if_baudrate : 0;
- break;
- case LAGG_PROTO_ROUNDROBIN:
- case LAGG_PROTO_LOADBALANCE:
- case LAGG_PROTO_BROADCAST:
- speed = 0;
- NET_EPOCH_ENTER(et);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- speed += lp->lp_ifp->if_baudrate;
- NET_EPOCH_EXIT(et);
- sc->sc_ifp->if_baudrate = speed;
- break;
- case LAGG_PROTO_LACP:
- /* LACP updates if_baudrate itself */
- break;
- }
- }
- static void
- lagg_port_state(struct ifnet *ifp, int state)
- {
- struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg;
- struct lagg_softc *sc = NULL;
- if (lp != NULL)
- sc = lp->lp_softc;
- if (sc == NULL)
- return;
- LAGG_XLOCK(sc);
- lagg_linkstate(sc);
- lagg_proto_linkstate(sc, lp);
- LAGG_XUNLOCK(sc);
- }
- struct lagg_port *
- lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp)
- {
- struct lagg_port *lp_next, *rval = NULL;
- /*
- * Search a port which reports an active link state.
- */
- #ifdef INVARIANTS
- /*
- * This is called with either in the network epoch
- * or with LAGG_XLOCK(sc) held.
- */
- if (!in_epoch(net_epoch_preempt))
- LAGG_XLOCK_ASSERT(sc);
- #endif
- if (lp == NULL)
- goto search;
- if (LAGG_PORTACTIVE(lp)) {
- rval = lp;
- goto found;
- }
- if ((lp_next = CK_SLIST_NEXT(lp, lp_entries)) != NULL &&
- LAGG_PORTACTIVE(lp_next)) {
- rval = lp_next;
- goto found;
- }
- search:
- CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
- if (LAGG_PORTACTIVE(lp_next)) {
- return (lp_next);
- }
- }
- found:
- return (rval);
- }
- int
- lagg_enqueue(struct ifnet *ifp, struct mbuf *m)
- {
- #if defined(KERN_TLS) || defined(RATELIMIT)
- if (m->m_pkthdr.csum_flags & CSUM_SND_TAG) {
- struct lagg_snd_tag *lst;
- struct m_snd_tag *mst;
- mst = m->m_pkthdr.snd_tag;
- lst = mst_to_lst(mst);
- if (lst->tag->ifp != ifp) {
- m_freem(m);
- return (EAGAIN);
- }
- m->m_pkthdr.snd_tag = m_snd_tag_ref(lst->tag);
- m_snd_tag_rele(mst);
- }
- #endif
- return (ifp->if_transmit)(ifp, m);
- }
- /*
- * Simple round robin aggregation
- */
- static void
- lagg_rr_attach(struct lagg_softc *sc)
- {
- sc->sc_seq = 0;
- sc->sc_stride = 1;
- }
- static int
- lagg_rr_start(struct lagg_softc *sc, struct mbuf *m)
- {
- struct lagg_port *lp;
- uint32_t p;
- p = atomic_fetchadd_32(&sc->sc_seq, 1);
- p /= sc->sc_stride;
- p %= sc->sc_count;
- lp = CK_SLIST_FIRST(&sc->sc_ports);
- while (p--)
- lp = CK_SLIST_NEXT(lp, lp_entries);
- /*
- * Check the port's link state. This will return the next active
- * port if the link is down or the port is NULL.
- */
- if ((lp = lagg_link_active(sc, lp)) == NULL) {
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
- m_freem(m);
- return (ENETDOWN);
- }
- /* Send mbuf */
- return (lagg_enqueue(lp->lp_ifp, m));
- }
- /*
- * Broadcast mode
- */
- static int
- lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m)
- {
- int errors = 0;
- int ret;
- struct lagg_port *lp, *last = NULL;
- struct mbuf *m0;
- NET_EPOCH_ASSERT();
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) {
- if (!LAGG_PORTACTIVE(lp))
- continue;
- if (last != NULL) {
- m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
- if (m0 == NULL) {
- ret = ENOBUFS;
- errors++;
- break;
- }
- lagg_enqueue(last->lp_ifp, m0);
- }
- last = lp;
- }
- if (last == NULL) {
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
- m_freem(m);
- return (ENOENT);
- }
- if ((last = lagg_link_active(sc, last)) == NULL) {
- errors++;
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors);
- m_freem(m);
- return (ENETDOWN);
- }
- ret = lagg_enqueue(last->lp_ifp, m);
- if (errors != 0)
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, errors);
- return (ret);
- }
- /*
- * Active failover
- */
- static int
- lagg_fail_start(struct lagg_softc *sc, struct mbuf *m)
- {
- struct lagg_port *lp;
- /* Use the master port if active or the next available port */
- if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) {
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
- m_freem(m);
- return (ENETDOWN);
- }
- /* Send mbuf */
- return (lagg_enqueue(lp->lp_ifp, m));
- }
- static struct mbuf *
- lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
- {
- struct ifnet *ifp = sc->sc_ifp;
- struct lagg_port *tmp_tp;
- if (lp == sc->sc_primary || V_lagg_failover_rx_all) {
- m->m_pkthdr.rcvif = ifp;
- return (m);
- }
- if (!LAGG_PORTACTIVE(sc->sc_primary)) {
- tmp_tp = lagg_link_active(sc, sc->sc_primary);
- /*
- * If tmp_tp is null, we've received a packet when all
- * our links are down. Weird, but process it anyways.
- */
- if (tmp_tp == NULL || tmp_tp == lp) {
- m->m_pkthdr.rcvif = ifp;
- return (m);
- }
- }
- m_freem(m);
- return (NULL);
- }
- /*
- * Loadbalancing
- */
- static void
- lagg_lb_attach(struct lagg_softc *sc)
- {
- struct lagg_port *lp;
- struct lagg_lb *lb;
- LAGG_XLOCK_ASSERT(sc);
- lb = malloc(sizeof(struct lagg_lb), M_LAGG, M_WAITOK | M_ZERO);
- lb->lb_key = m_ether_tcpip_hash_init();
- sc->sc_psc = lb;
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- lagg_lb_port_create(lp);
- }
- static void
- lagg_lb_detach(struct lagg_softc *sc)
- {
- struct lagg_lb *lb;
- lb = (struct lagg_lb *)sc->sc_psc;
- if (lb != NULL)
- free(lb, M_LAGG);
- }
- static int
- lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp)
- {
- struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
- struct lagg_port *lp_next;
- int i = 0, rv;
- rv = 0;
- bzero(&lb->lb_ports, sizeof(lb->lb_ports));
- LAGG_XLOCK_ASSERT(sc);
- CK_SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) {
- if (lp_next == lp)
- continue;
- if (i >= LAGG_MAX_PORTS) {
- rv = EINVAL;
- break;
- }
- if (sc->sc_ifflags & IFF_DEBUG)
- printf("%s: port %s at index %d\n",
- sc->sc_ifname, lp_next->lp_ifp->if_xname, i);
- lb->lb_ports[i++] = lp_next;
- }
- return (rv);
- }
- static int
- lagg_lb_port_create(struct lagg_port *lp)
- {
- struct lagg_softc *sc = lp->lp_softc;
- return (lagg_lb_porttable(sc, NULL));
- }
- static void
- lagg_lb_port_destroy(struct lagg_port *lp)
- {
- struct lagg_softc *sc = lp->lp_softc;
- lagg_lb_porttable(sc, lp);
- }
- static int
- lagg_lb_start(struct lagg_softc *sc, struct mbuf *m)
- {
- struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc;
- struct lagg_port *lp = NULL;
- uint32_t p = 0;
- if ((sc->sc_opts & LAGG_OPT_USE_FLOWID) &&
- M_HASHTYPE_GET(m) != M_HASHTYPE_NONE)
- p = m->m_pkthdr.flowid >> sc->flowid_shift;
- else
- p = m_ether_tcpip_hash(sc->sc_flags, m, lb->lb_key);
- p %= sc->sc_count;
- lp = lb->lb_ports[p];
- /*
- * Check the port's link state. This will return the next active
- * port if the link is down or the port is NULL.
- */
- if ((lp = lagg_link_active(sc, lp)) == NULL) {
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
- m_freem(m);
- return (ENETDOWN);
- }
- /* Send mbuf */
- return (lagg_enqueue(lp->lp_ifp, m));
- }
- /*
- * 802.3ad LACP
- */
- static void
- lagg_lacp_attach(struct lagg_softc *sc)
- {
- struct lagg_port *lp;
- lacp_attach(sc);
- LAGG_XLOCK_ASSERT(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- lacp_port_create(lp);
- }
- static void
- lagg_lacp_detach(struct lagg_softc *sc)
- {
- struct lagg_port *lp;
- void *psc;
- LAGG_XLOCK_ASSERT(sc);
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- lacp_port_destroy(lp);
- psc = sc->sc_psc;
- sc->sc_psc = NULL;
- lacp_detach(psc);
- }
- static void
- lagg_lacp_lladdr(struct lagg_softc *sc)
- {
- struct lagg_port *lp;
- LAGG_SXLOCK_ASSERT(sc);
- /* purge all the lacp ports */
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- lacp_port_destroy(lp);
- /* add them back in */
- CK_SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
- lacp_port_create(lp);
- }
- static int
- lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
- {
- struct lagg_port *lp;
- int err;
- lp = lacp_select_tx_port(sc, m, &err);
- if (lp == NULL) {
- if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
- m_freem(m);
- return (err);
- }
- /* Send mbuf */
- return (lagg_enqueue(lp->lp_ifp, m));
- }
- static struct mbuf *
- lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
- {
- struct ifnet *ifp = sc->sc_ifp;
- struct ether_header *eh;
- u_short etype;
- eh = mtod(m, struct ether_header *);
- etype = ntohs(eh->ether_type);
- /* Tap off LACP control messages */
- if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
- m = lacp_input(lp, m);
- if (m == NULL)
- return (NULL);
- }
- /*
- * If the port is not collecting or not in the active aggregator then
- * free and return.
- */
- if (!lacp_iscollecting(lp) || !lacp_isactive(lp)) {
- m_freem(m);
- return (NULL);
- }
- m->m_pkthdr.rcvif = ifp;
- return (m);
- }
- /* Default input */
- static struct mbuf *
- lagg_default_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
- {
- struct ifnet *ifp = sc->sc_ifp;
- /* Just pass in the packet to our lagg device */
- m->m_pkthdr.rcvif = ifp;
- return (m);
- }
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