5fd3c1bea4
big-endian bug on verify_meshconf()
2759 lines
78 KiB
C
2759 lines
78 KiB
C
/*-
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* Copyright (c) 2009 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Rui Paulo under sponsorship from the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifdef __FreeBSD__
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__FBSDID("$FreeBSD$");
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#endif
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/*
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* IEEE 802.11s Mesh Point (MBSS) support.
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*
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* Based on March 2009, D3.0 802.11s draft spec.
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*/
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_llc.h>
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#include <net/ethernet.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_action.h>
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#include <net80211/ieee80211_input.h>
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#include <net80211/ieee80211_mesh.h>
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static void mesh_rt_flush_invalid(struct ieee80211vap *);
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static int mesh_select_proto_path(struct ieee80211vap *, const char *);
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static int mesh_select_proto_metric(struct ieee80211vap *, const char *);
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static void mesh_vattach(struct ieee80211vap *);
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static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int);
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static void mesh_rt_cleanup_cb(void *);
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static void mesh_linkchange(struct ieee80211_node *,
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enum ieee80211_mesh_mlstate);
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static void mesh_checkid(void *, struct ieee80211_node *);
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static uint32_t mesh_generateid(struct ieee80211vap *);
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static int mesh_checkpseq(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN], uint32_t);
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static struct ieee80211_node *
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mesh_find_txnode(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN]);
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static void mesh_forward(struct ieee80211vap *, struct mbuf *,
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const struct ieee80211_meshcntl *);
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static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int);
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static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int,
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int, int);
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static void mesh_peer_timeout_setup(struct ieee80211_node *);
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static void mesh_peer_timeout_backoff(struct ieee80211_node *);
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static void mesh_peer_timeout_cb(void *);
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static __inline void
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mesh_peer_timeout_stop(struct ieee80211_node *);
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static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *);
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static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *);
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static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t,
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const uint8_t *);
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uint32_t mesh_airtime_calc(struct ieee80211_node *);
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/*
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* Timeout values come from the specification and are in milliseconds.
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*/
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SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0,
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"IEEE 802.11s parameters");
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static int ieee80211_mesh_retrytimeout = -1;
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SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
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"Retry timeout (msec)");
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static int ieee80211_mesh_holdingtimeout = -1;
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SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
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"Holding state timeout (msec)");
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static int ieee80211_mesh_confirmtimeout = -1;
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SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I",
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"Confirm state timeout (msec)");
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static int ieee80211_mesh_maxretries = 2;
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SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW,
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&ieee80211_mesh_maxretries, 0,
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"Maximum retries during peer link establishment");
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static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] =
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{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
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static ieee80211_recv_action_func mesh_recv_action_meshpeering_open;
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static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm;
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static ieee80211_recv_action_func mesh_recv_action_meshpeering_close;
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static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req;
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static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep;
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static ieee80211_send_action_func mesh_send_action_meshpeering_open;
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static ieee80211_send_action_func mesh_send_action_meshpeering_confirm;
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static ieee80211_send_action_func mesh_send_action_meshpeering_close;
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static ieee80211_send_action_func mesh_send_action_meshlink_request;
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static ieee80211_send_action_func mesh_send_action_meshlink_reply;
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static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = {
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.mpm_descr = "AIRTIME",
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.mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME,
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.mpm_metric = mesh_airtime_calc,
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};
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static struct ieee80211_mesh_proto_path mesh_proto_paths[4];
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static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4];
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#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock)
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#define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED)
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#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock)
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MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table");
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/*
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* Helper functions to manipulate the Mesh routing table.
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*/
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static struct ieee80211_mesh_route *
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mesh_rt_find_locked(struct ieee80211_mesh_state *ms,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_route *rt;
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MESH_RT_LOCK_ASSERT(ms);
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TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
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if (IEEE80211_ADDR_EQ(dest, rt->rt_dest))
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return rt;
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}
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return NULL;
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}
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static struct ieee80211_mesh_route *
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mesh_rt_add_locked(struct ieee80211_mesh_state *ms,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_route *rt;
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KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest),
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("%s: adding broadcast to the routing table", __func__));
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MESH_RT_LOCK_ASSERT(ms);
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rt = malloc(ALIGN(sizeof(struct ieee80211_mesh_route)) +
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ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, M_NOWAIT | M_ZERO);
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if (rt != NULL) {
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IEEE80211_ADDR_COPY(rt->rt_dest, dest);
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rt->rt_priv = (void *)ALIGN(&rt[1]);
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rt->rt_crtime = ticks;
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TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next);
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}
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return rt;
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}
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struct ieee80211_mesh_route *
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ieee80211_mesh_rt_find(struct ieee80211vap *vap,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt;
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MESH_RT_LOCK(ms);
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rt = mesh_rt_find_locked(ms, dest);
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MESH_RT_UNLOCK(ms);
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return rt;
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}
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struct ieee80211_mesh_route *
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ieee80211_mesh_rt_add(struct ieee80211vap *vap,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt;
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KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL,
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("%s: duplicate entry in the routing table", __func__));
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KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest),
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("%s: adding self to the routing table", __func__));
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MESH_RT_LOCK(ms);
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rt = mesh_rt_add_locked(ms, dest);
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MESH_RT_UNLOCK(ms);
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return rt;
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}
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/*
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* Add a proxy route (as needed) for the specified destination.
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*/
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void
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ieee80211_mesh_proxy_check(struct ieee80211vap *vap,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt;
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MESH_RT_LOCK(ms);
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rt = mesh_rt_find_locked(ms, dest);
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if (rt == NULL) {
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rt = mesh_rt_add_locked(ms, dest);
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if (rt == NULL) {
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IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
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"%s", "unable to add proxy entry");
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vap->iv_stats.is_mesh_rtaddfailed++;
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} else {
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IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
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"%s", "add proxy entry");
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IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
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rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
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| IEEE80211_MESHRT_FLAGS_PROXY;
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}
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/* XXX assert PROXY? */
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} else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) {
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struct ieee80211com *ic = vap->iv_ic;
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/*
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* Fix existing entry created by received frames from
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* stations that have some memory of dest. We also
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* flush any frames held on the staging queue; delivering
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* them is too much trouble right now.
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*/
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IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
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"%s", "fix proxy entry");
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IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr);
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rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID
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| IEEE80211_MESHRT_FLAGS_PROXY;
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/* XXX belongs in hwmp */
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ieee80211_ageq_drain_node(&ic->ic_stageq,
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(void *)(uintptr_t) ieee80211_mac_hash(ic, dest));
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/* XXX stat? */
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}
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MESH_RT_UNLOCK(ms);
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}
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static __inline void
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mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt)
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{
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TAILQ_REMOVE(&ms->ms_routes, rt, rt_next);
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free(rt, M_80211_MESH_RT);
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}
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void
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ieee80211_mesh_rt_del(struct ieee80211vap *vap,
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const uint8_t dest[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt, *next;
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MESH_RT_LOCK(ms);
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TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
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if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) {
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mesh_rt_del(ms, rt);
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MESH_RT_UNLOCK(ms);
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return;
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}
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}
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MESH_RT_UNLOCK(ms);
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}
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void
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ieee80211_mesh_rt_flush(struct ieee80211vap *vap)
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt, *next;
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if (ms == NULL)
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return;
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MESH_RT_LOCK(ms);
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TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next)
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mesh_rt_del(ms, rt);
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MESH_RT_UNLOCK(ms);
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}
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void
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ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap,
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const uint8_t peer[IEEE80211_ADDR_LEN])
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt, *next;
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MESH_RT_LOCK(ms);
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TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
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if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer))
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mesh_rt_del(ms, rt);
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}
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MESH_RT_UNLOCK(ms);
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}
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/*
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* Flush expired routing entries, i.e. those in invalid state for
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* some time.
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*/
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static void
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mesh_rt_flush_invalid(struct ieee80211vap *vap)
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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struct ieee80211_mesh_route *rt, *next;
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if (ms == NULL)
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return;
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MESH_RT_LOCK(ms);
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TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) {
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if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 &&
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ticks - rt->rt_crtime >= ms->ms_ppath->mpp_inact)
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mesh_rt_del(ms, rt);
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}
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MESH_RT_UNLOCK(ms);
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}
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#define N(a) (sizeof(a) / sizeof(a[0]))
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int
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ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp)
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{
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int i, firstempty = -1;
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for (i = 0; i < N(mesh_proto_paths); i++) {
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if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr,
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IEEE80211_MESH_PROTO_DSZ) == 0)
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return EEXIST;
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if (!mesh_proto_paths[i].mpp_active && firstempty == -1)
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firstempty = i;
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}
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if (firstempty < 0)
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return ENOSPC;
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memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp));
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mesh_proto_paths[firstempty].mpp_active = 1;
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return 0;
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}
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int
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ieee80211_mesh_register_proto_metric(const struct
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ieee80211_mesh_proto_metric *mpm)
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{
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int i, firstempty = -1;
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for (i = 0; i < N(mesh_proto_metrics); i++) {
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if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr,
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IEEE80211_MESH_PROTO_DSZ) == 0)
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return EEXIST;
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if (!mesh_proto_metrics[i].mpm_active && firstempty == -1)
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firstempty = i;
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}
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if (firstempty < 0)
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return ENOSPC;
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memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm));
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mesh_proto_metrics[firstempty].mpm_active = 1;
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return 0;
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}
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static int
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mesh_select_proto_path(struct ieee80211vap *vap, const char *name)
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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int i;
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for (i = 0; i < N(mesh_proto_paths); i++) {
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if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) {
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ms->ms_ppath = &mesh_proto_paths[i];
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return 0;
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}
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}
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return ENOENT;
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}
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static int
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mesh_select_proto_metric(struct ieee80211vap *vap, const char *name)
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{
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struct ieee80211_mesh_state *ms = vap->iv_mesh;
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int i;
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for (i = 0; i < N(mesh_proto_metrics); i++) {
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if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) {
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ms->ms_pmetric = &mesh_proto_metrics[i];
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return 0;
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}
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}
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return ENOENT;
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}
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#undef N
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static void
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ieee80211_mesh_init(void)
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{
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memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths));
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memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics));
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/*
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* Setup mesh parameters that depends on the clock frequency.
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*/
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ieee80211_mesh_retrytimeout = msecs_to_ticks(40);
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ieee80211_mesh_holdingtimeout = msecs_to_ticks(40);
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ieee80211_mesh_confirmtimeout = msecs_to_ticks(40);
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/*
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* Register action frame handlers.
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*/
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
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IEEE80211_ACTION_MESHPEERING_OPEN,
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mesh_recv_action_meshpeering_open);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
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IEEE80211_ACTION_MESHPEERING_CONFIRM,
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mesh_recv_action_meshpeering_confirm);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
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IEEE80211_ACTION_MESHPEERING_CLOSE,
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mesh_recv_action_meshpeering_close);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
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IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req);
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ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
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IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep);
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|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_OPEN,
|
|
mesh_send_action_meshpeering_open);
|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
mesh_send_action_meshpeering_confirm);
|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
mesh_send_action_meshpeering_close);
|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
|
|
IEEE80211_ACTION_MESHLMETRIC_REQ,
|
|
mesh_send_action_meshlink_request);
|
|
ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC,
|
|
IEEE80211_ACTION_MESHLMETRIC_REP,
|
|
mesh_send_action_meshlink_reply);
|
|
|
|
/*
|
|
* Register Airtime Link Metric.
|
|
*/
|
|
ieee80211_mesh_register_proto_metric(&mesh_metric_airtime);
|
|
|
|
}
|
|
SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL);
|
|
|
|
void
|
|
ieee80211_mesh_attach(struct ieee80211com *ic)
|
|
{
|
|
ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach;
|
|
}
|
|
|
|
void
|
|
ieee80211_mesh_detach(struct ieee80211com *ic)
|
|
{
|
|
}
|
|
|
|
static void
|
|
mesh_vdetach_peers(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t args[3];
|
|
|
|
if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) {
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
}
|
|
callout_drain(&ni->ni_mltimer);
|
|
/* XXX belongs in hwmp */
|
|
ieee80211_ageq_drain_node(&ic->ic_stageq,
|
|
(void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr));
|
|
}
|
|
|
|
static void
|
|
mesh_vdetach(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
|
|
callout_drain(&ms->ms_cleantimer);
|
|
ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers,
|
|
NULL);
|
|
ieee80211_mesh_rt_flush(vap);
|
|
mtx_destroy(&ms->ms_rt_lock);
|
|
ms->ms_ppath->mpp_vdetach(vap);
|
|
free(vap->iv_mesh, M_80211_VAP);
|
|
vap->iv_mesh = NULL;
|
|
}
|
|
|
|
static void
|
|
mesh_vattach(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211_mesh_state *ms;
|
|
vap->iv_newstate = mesh_newstate;
|
|
vap->iv_input = mesh_input;
|
|
vap->iv_opdetach = mesh_vdetach;
|
|
vap->iv_recv_mgmt = mesh_recv_mgmt;
|
|
ms = malloc(sizeof(struct ieee80211_mesh_state), M_80211_VAP,
|
|
M_NOWAIT | M_ZERO);
|
|
if (ms == NULL) {
|
|
printf("%s: couldn't alloc MBSS state\n", __func__);
|
|
return;
|
|
}
|
|
vap->iv_mesh = ms;
|
|
ms->ms_seq = 0;
|
|
ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD);
|
|
ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL;
|
|
TAILQ_INIT(&ms->ms_routes);
|
|
mtx_init(&ms->ms_rt_lock, "MBSS", "802.11s routing table", MTX_DEF);
|
|
callout_init(&ms->ms_cleantimer, CALLOUT_MPSAFE);
|
|
mesh_select_proto_metric(vap, "AIRTIME");
|
|
KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL"));
|
|
mesh_select_proto_path(vap, "HWMP");
|
|
KASSERT(ms->ms_ppath, ("ms_ppath == NULL"));
|
|
ms->ms_ppath->mpp_vattach(vap);
|
|
}
|
|
|
|
/*
|
|
* IEEE80211_M_MBSS vap state machine handler.
|
|
*/
|
|
static int
|
|
mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_node *ni;
|
|
enum ieee80211_state ostate;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
ostate = vap->iv_state;
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
|
|
__func__, ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate], arg);
|
|
vap->iv_state = nstate; /* state transition */
|
|
if (ostate != IEEE80211_S_SCAN)
|
|
ieee80211_cancel_scan(vap); /* background scan */
|
|
ni = vap->iv_bss; /* NB: no reference held */
|
|
if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN)
|
|
callout_drain(&ms->ms_cleantimer);
|
|
switch (nstate) {
|
|
case IEEE80211_S_INIT:
|
|
switch (ostate) {
|
|
case IEEE80211_S_SCAN:
|
|
ieee80211_cancel_scan(vap);
|
|
break;
|
|
case IEEE80211_S_CAC:
|
|
ieee80211_dfs_cac_stop(vap);
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
mesh_vdetach_peers, NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (ostate != IEEE80211_S_INIT) {
|
|
/* NB: optimize INIT -> INIT case */
|
|
ieee80211_reset_bss(vap);
|
|
ieee80211_mesh_rt_flush(vap);
|
|
}
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
|
|
!IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) &&
|
|
ms->ms_idlen != 0) {
|
|
/*
|
|
* Already have a channel and a mesh ID; bypass
|
|
* the scan and startup immediately.
|
|
*/
|
|
ieee80211_create_ibss(vap, vap->iv_des_chan);
|
|
break;
|
|
}
|
|
/*
|
|
* Initiate a scan. We can come here as a result
|
|
* of an IEEE80211_IOC_SCAN_REQ too in which case
|
|
* the vap will be marked with IEEE80211_FEXT_SCANREQ
|
|
* and the scan request parameters will be present
|
|
* in iv_scanreq. Otherwise we do the default.
|
|
*/
|
|
if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
|
|
ieee80211_check_scan(vap,
|
|
vap->iv_scanreq_flags,
|
|
vap->iv_scanreq_duration,
|
|
vap->iv_scanreq_mindwell,
|
|
vap->iv_scanreq_maxdwell,
|
|
vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
|
|
} else
|
|
ieee80211_check_scan_current(vap);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_CAC:
|
|
/*
|
|
* Start CAC on a DFS channel. We come here when starting
|
|
* a bss on a DFS channel (see ieee80211_create_ibss).
|
|
*/
|
|
ieee80211_dfs_cac_start(vap);
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
/*
|
|
* Already have a channel; bypass the
|
|
* scan and startup immediately.
|
|
* Note that ieee80211_create_ibss will call
|
|
* back to do a RUN->RUN state change.
|
|
*/
|
|
ieee80211_create_ibss(vap,
|
|
ieee80211_ht_adjust_channel(ic,
|
|
ic->ic_curchan, vap->iv_flags_ht));
|
|
/* NB: iv_bss is changed on return */
|
|
break;
|
|
case IEEE80211_S_CAC:
|
|
/*
|
|
* NB: This is the normal state change when CAC
|
|
* expires and no radar was detected; no need to
|
|
* clear the CAC timer as it's already expired.
|
|
*/
|
|
/* fall thru... */
|
|
case IEEE80211_S_CSA:
|
|
#if 0
|
|
/*
|
|
* Shorten inactivity timer of associated stations
|
|
* to weed out sta's that don't follow a CSA.
|
|
*/
|
|
ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap);
|
|
#endif
|
|
/*
|
|
* Update bss node channel to reflect where
|
|
* we landed after CSA.
|
|
*/
|
|
ieee80211_node_set_chan(vap->iv_bss,
|
|
ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
|
|
ieee80211_htchanflags(vap->iv_bss->ni_chan)));
|
|
/* XXX bypass debug msgs */
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
case IEEE80211_S_RUN:
|
|
#ifdef IEEE80211_DEBUG
|
|
if (ieee80211_msg_debug(vap)) {
|
|
struct ieee80211_node *ni = vap->iv_bss;
|
|
ieee80211_note(vap,
|
|
"synchronized with %s meshid ",
|
|
ether_sprintf(ni->ni_meshid));
|
|
ieee80211_print_essid(ni->ni_meshid,
|
|
ni->ni_meshidlen);
|
|
/* XXX MCS/HT */
|
|
printf(" channel %d\n",
|
|
ieee80211_chan2ieee(ic, ic->ic_curchan));
|
|
}
|
|
#endif
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
ieee80211_node_authorize(vap->iv_bss);
|
|
callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
|
|
mesh_rt_cleanup_cb, vap);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/* NB: ostate not nstate */
|
|
ms->ms_ppath->mpp_newstate(vap, ostate, arg);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
mesh_rt_cleanup_cb(void *arg)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
|
|
mesh_rt_flush_invalid(vap);
|
|
callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact,
|
|
mesh_rt_cleanup_cb, vap);
|
|
}
|
|
|
|
|
|
/*
|
|
* Helper function to note the Mesh Peer Link FSM change.
|
|
*/
|
|
static void
|
|
mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
#ifdef IEEE80211_DEBUG
|
|
static const char *meshlinkstates[] = {
|
|
[IEEE80211_NODE_MESH_IDLE] = "IDLE",
|
|
[IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT",
|
|
[IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED",
|
|
[IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED",
|
|
[IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED",
|
|
[IEEE80211_NODE_MESH_HOLDING] = "HOLDING"
|
|
};
|
|
#endif
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_MESH,
|
|
ni, "peer link: %s -> %s",
|
|
meshlinkstates[ni->ni_mlstate], meshlinkstates[state]);
|
|
|
|
/* track neighbor count */
|
|
if (state == IEEE80211_NODE_MESH_ESTABLISHED &&
|
|
ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
|
|
KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow"));
|
|
ms->ms_neighbors++;
|
|
ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF);
|
|
} else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED &&
|
|
state != IEEE80211_NODE_MESH_ESTABLISHED) {
|
|
KASSERT(ms->ms_neighbors > 0, ("neighbor count 0"));
|
|
ms->ms_neighbors--;
|
|
ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF);
|
|
}
|
|
ni->ni_mlstate = state;
|
|
switch (state) {
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
ms->ms_ppath->mpp_peerdown(ni);
|
|
break;
|
|
case IEEE80211_NODE_MESH_ESTABLISHED:
|
|
ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Helper function to generate a unique local ID required for mesh
|
|
* peer establishment.
|
|
*/
|
|
static void
|
|
mesh_checkid(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
uint16_t *r = arg;
|
|
|
|
if (*r == ni->ni_mllid)
|
|
*(uint16_t *)arg = 0;
|
|
}
|
|
|
|
static uint32_t
|
|
mesh_generateid(struct ieee80211vap *vap)
|
|
{
|
|
int maxiter = 4;
|
|
uint16_t r;
|
|
|
|
do {
|
|
get_random_bytes(&r, 2);
|
|
ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r);
|
|
maxiter--;
|
|
} while (r == 0 && maxiter > 0);
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Verifies if we already received this packet by checking its
|
|
* sequence number.
|
|
* Returns 0 if the frame is to be accepted, 1 otherwise.
|
|
*/
|
|
static int
|
|
mesh_checkpseq(struct ieee80211vap *vap,
|
|
const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq)
|
|
{
|
|
struct ieee80211_mesh_route *rt;
|
|
|
|
rt = ieee80211_mesh_rt_find(vap, source);
|
|
if (rt == NULL) {
|
|
rt = ieee80211_mesh_rt_add(vap, source);
|
|
if (rt == NULL) {
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
|
|
"%s", "add mcast route failed");
|
|
vap->iv_stats.is_mesh_rtaddfailed++;
|
|
return 1;
|
|
}
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source,
|
|
"add mcast route, mesh seqno %d", seq);
|
|
rt->rt_lastmseq = seq;
|
|
return 0;
|
|
}
|
|
if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) {
|
|
return 1;
|
|
} else {
|
|
rt->rt_lastmseq = seq;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Iterate the routing table and locate the next hop.
|
|
*/
|
|
static struct ieee80211_node *
|
|
mesh_find_txnode(struct ieee80211vap *vap,
|
|
const uint8_t dest[IEEE80211_ADDR_LEN])
|
|
{
|
|
struct ieee80211_mesh_route *rt;
|
|
|
|
rt = ieee80211_mesh_rt_find(vap, dest);
|
|
if (rt == NULL)
|
|
return NULL;
|
|
if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0 ||
|
|
(rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)) {
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest,
|
|
"%s: !valid or proxy, flags 0x%x", __func__, rt->rt_flags);
|
|
/* XXX stat */
|
|
return NULL;
|
|
}
|
|
return ieee80211_find_txnode(vap, rt->rt_nexthop);
|
|
}
|
|
|
|
/*
|
|
* Forward the specified frame.
|
|
* Decrement the TTL and set TA to our MAC address.
|
|
*/
|
|
static void
|
|
mesh_forward(struct ieee80211vap *vap, struct mbuf *m,
|
|
const struct ieee80211_meshcntl *mc)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
struct ifnet *parent = ic->ic_ifp;
|
|
const struct ieee80211_frame *wh =
|
|
mtod(m, const struct ieee80211_frame *);
|
|
struct mbuf *mcopy;
|
|
struct ieee80211_meshcntl *mccopy;
|
|
struct ieee80211_frame *whcopy;
|
|
struct ieee80211_node *ni;
|
|
int err;
|
|
|
|
if (mc->mc_ttl == 0) {
|
|
IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
|
|
"%s", "frame not fwd'd, ttl 0");
|
|
vap->iv_stats.is_mesh_fwd_ttl++;
|
|
return;
|
|
}
|
|
if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) {
|
|
IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
|
|
"%s", "frame not fwd'd, fwding disabled");
|
|
vap->iv_stats.is_mesh_fwd_disabled++;
|
|
return;
|
|
}
|
|
mcopy = m_dup(m, M_DONTWAIT);
|
|
if (mcopy == NULL) {
|
|
IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
|
|
"%s", "frame not fwd'd, cannot dup");
|
|
vap->iv_stats.is_mesh_fwd_nobuf++;
|
|
ifp->if_oerrors++;
|
|
return;
|
|
}
|
|
mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) +
|
|
sizeof(struct ieee80211_meshcntl));
|
|
if (mcopy == NULL) {
|
|
IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
|
|
"%s", "frame not fwd'd, too short");
|
|
vap->iv_stats.is_mesh_fwd_tooshort++;
|
|
ifp->if_oerrors++;
|
|
m_freem(mcopy);
|
|
return;
|
|
}
|
|
whcopy = mtod(mcopy, struct ieee80211_frame *);
|
|
mccopy = (struct ieee80211_meshcntl *)
|
|
(mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh));
|
|
/* XXX clear other bits? */
|
|
whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY;
|
|
IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr);
|
|
if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
|
|
ni = ieee80211_ref_node(vap->iv_bss);
|
|
mcopy->m_flags |= M_MCAST;
|
|
} else {
|
|
ni = mesh_find_txnode(vap, whcopy->i_addr3);
|
|
if (ni == NULL) {
|
|
IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh,
|
|
"%s", "frame not fwd'd, no path");
|
|
vap->iv_stats.is_mesh_fwd_nopath++;
|
|
m_freem(mcopy);
|
|
return;
|
|
}
|
|
IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr);
|
|
}
|
|
KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__));
|
|
mccopy->mc_ttl--;
|
|
|
|
/* XXX calculate priority so drivers can find the tx queue */
|
|
M_WME_SETAC(mcopy, WME_AC_BE);
|
|
|
|
/* XXX do we know m_nextpkt is NULL? */
|
|
mcopy->m_pkthdr.rcvif = (void *) ni;
|
|
err = parent->if_transmit(parent, mcopy);
|
|
if (err != 0) {
|
|
/* NB: IFQ_HANDOFF reclaims mbuf */
|
|
ieee80211_free_node(ni);
|
|
} else {
|
|
ifp->if_opackets++;
|
|
}
|
|
}
|
|
|
|
static struct mbuf *
|
|
mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen)
|
|
{
|
|
#define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK)
|
|
uint8_t b[sizeof(struct ieee80211_qosframe_addr4) +
|
|
sizeof(struct ieee80211_meshcntl_ae11)];
|
|
const struct ieee80211_qosframe_addr4 *wh;
|
|
const struct ieee80211_meshcntl_ae10 *mc;
|
|
struct ether_header *eh;
|
|
struct llc *llc;
|
|
int ae;
|
|
|
|
if (m->m_len < hdrlen + sizeof(*llc) &&
|
|
(m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY,
|
|
"discard data frame: %s", "m_pullup failed");
|
|
vap->iv_stats.is_rx_tooshort++;
|
|
return NULL;
|
|
}
|
|
memcpy(b, mtod(m, caddr_t), hdrlen);
|
|
wh = (const struct ieee80211_qosframe_addr4 *)&b[0];
|
|
mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen];
|
|
KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS ||
|
|
WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS,
|
|
("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
|
|
|
|
llc = (struct llc *)(mtod(m, caddr_t) + hdrlen);
|
|
if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
|
|
llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
|
|
llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 &&
|
|
/* NB: preserve AppleTalk frames that have a native SNAP hdr */
|
|
!(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) ||
|
|
llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) {
|
|
m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
|
|
llc = NULL;
|
|
} else {
|
|
m_adj(m, hdrlen - sizeof(*eh));
|
|
}
|
|
eh = mtod(m, struct ether_header *);
|
|
ae = mc->mc_flags & 3;
|
|
if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) {
|
|
IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1);
|
|
if (ae == 0) {
|
|
IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3);
|
|
} else if (ae == 1) {
|
|
IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr4);
|
|
} else {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
(const struct ieee80211_frame *)wh, NULL,
|
|
"bad AE %d", ae);
|
|
vap->iv_stats.is_mesh_badae++;
|
|
m_freem(m);
|
|
return NULL;
|
|
}
|
|
} else {
|
|
if (ae == 0) {
|
|
IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3);
|
|
IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4);
|
|
} else if (ae == 2) {
|
|
IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr4);
|
|
IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr5);
|
|
} else {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
(const struct ieee80211_frame *)wh, NULL,
|
|
"bad AE %d", ae);
|
|
vap->iv_stats.is_mesh_badae++;
|
|
m_freem(m);
|
|
return NULL;
|
|
}
|
|
}
|
|
#ifdef ALIGNED_POINTER
|
|
if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) {
|
|
m = ieee80211_realign(vap, m, sizeof(*eh));
|
|
if (m == NULL)
|
|
return NULL;
|
|
}
|
|
#endif /* ALIGNED_POINTER */
|
|
if (llc != NULL) {
|
|
eh = mtod(m, struct ether_header *);
|
|
eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh));
|
|
}
|
|
return m;
|
|
#undef WDIR
|
|
}
|
|
|
|
/*
|
|
* Return non-zero if the unicast mesh data frame should be processed
|
|
* locally. Frames that are not proxy'd have our address, otherwise
|
|
* we need to consult the routing table to look for a proxy entry.
|
|
*/
|
|
static __inline int
|
|
mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh,
|
|
const struct ieee80211_meshcntl *mc)
|
|
{
|
|
int ae = mc->mc_flags & 3;
|
|
|
|
KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS,
|
|
("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1]));
|
|
KASSERT(ae == 0 || ae == 2, ("bad AE %d", ae));
|
|
if (ae == 2) { /* ucast w/ proxy */
|
|
const struct ieee80211_meshcntl_ae10 *mc10 =
|
|
(const struct ieee80211_meshcntl_ae10 *) mc;
|
|
struct ieee80211_mesh_route *rt =
|
|
ieee80211_mesh_rt_find(vap, mc10->mc_addr4);
|
|
/* check for proxy route to ourself */
|
|
return (rt != NULL &&
|
|
(rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY));
|
|
} else /* ucast w/o proxy */
|
|
return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr);
|
|
}
|
|
|
|
static int
|
|
mesh_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
|
|
{
|
|
#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
|
|
#define HAS_SEQ(type) ((type & 0x4) == 0)
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
struct ieee80211_frame *wh;
|
|
const struct ieee80211_meshcntl *mc;
|
|
int hdrspace, meshdrlen, need_tap;
|
|
uint8_t dir, type, subtype, qos;
|
|
uint32_t seq;
|
|
uint8_t *addr;
|
|
ieee80211_seq rxseq;
|
|
|
|
KASSERT(ni != NULL, ("null node"));
|
|
ni->ni_inact = ni->ni_inact_reload;
|
|
|
|
need_tap = 1; /* mbuf need to be tapped. */
|
|
type = -1; /* undefined */
|
|
|
|
if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, NULL,
|
|
"too short (1): len %u", m->m_pkthdr.len);
|
|
vap->iv_stats.is_rx_tooshort++;
|
|
goto out;
|
|
}
|
|
/*
|
|
* Bit of a cheat here, we use a pointer for a 3-address
|
|
* frame format but don't reference fields past outside
|
|
* ieee80211_frame_min w/o first validating the data is
|
|
* present.
|
|
*/
|
|
wh = mtod(m, struct ieee80211_frame *);
|
|
|
|
if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
|
|
IEEE80211_FC0_VERSION_0) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]);
|
|
vap->iv_stats.is_rx_badversion++;
|
|
goto err;
|
|
}
|
|
dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
|
|
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
|
|
subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
|
|
if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
|
|
IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
|
|
ni->ni_noise = nf;
|
|
if (HAS_SEQ(type)) {
|
|
uint8_t tid = ieee80211_gettid(wh);
|
|
|
|
if (IEEE80211_QOS_HAS_SEQ(wh) &&
|
|
TID_TO_WME_AC(tid) >= WME_AC_VI)
|
|
ic->ic_wme.wme_hipri_traffic++;
|
|
rxseq = le16toh(*(uint16_t *)wh->i_seq);
|
|
if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 &&
|
|
(wh->i_fc[1] & IEEE80211_FC1_RETRY) &&
|
|
SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) {
|
|
/* duplicate, discard */
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
|
|
wh->i_addr1, "duplicate",
|
|
"seqno <%u,%u> fragno <%u,%u> tid %u",
|
|
rxseq >> IEEE80211_SEQ_SEQ_SHIFT,
|
|
ni->ni_rxseqs[tid] >>
|
|
IEEE80211_SEQ_SEQ_SHIFT,
|
|
rxseq & IEEE80211_SEQ_FRAG_MASK,
|
|
ni->ni_rxseqs[tid] &
|
|
IEEE80211_SEQ_FRAG_MASK,
|
|
tid);
|
|
vap->iv_stats.is_rx_dup++;
|
|
IEEE80211_NODE_STAT(ni, rx_dup);
|
|
goto out;
|
|
}
|
|
ni->ni_rxseqs[tid] = rxseq;
|
|
}
|
|
}
|
|
#ifdef IEEE80211_DEBUG
|
|
/*
|
|
* It's easier, but too expensive, to simulate different mesh
|
|
* topologies by consulting the ACL policy very early, so do this
|
|
* only under DEBUG.
|
|
*
|
|
* NB: this check is also done upon peering link initiation.
|
|
*/
|
|
if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
|
|
wh, NULL, "%s", "disallowed by ACL");
|
|
vap->iv_stats.is_rx_acl++;
|
|
goto out;
|
|
}
|
|
#endif
|
|
switch (type) {
|
|
case IEEE80211_FC0_TYPE_DATA:
|
|
if (ni == vap->iv_bss)
|
|
goto out;
|
|
if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
|
|
ni->ni_macaddr, NULL,
|
|
"peer link not yet established (%d)",
|
|
ni->ni_mlstate);
|
|
vap->iv_stats.is_mesh_nolink++;
|
|
goto out;
|
|
}
|
|
if (dir != IEEE80211_FC1_DIR_FROMDS &&
|
|
dir != IEEE80211_FC1_DIR_DSTODS) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "data", "incorrect dir 0x%x", dir);
|
|
vap->iv_stats.is_rx_wrongdir++;
|
|
goto err;
|
|
}
|
|
/* pull up enough to get to the mesh control */
|
|
hdrspace = ieee80211_hdrspace(ic, wh);
|
|
if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) &&
|
|
(m = m_pullup(m, hdrspace +
|
|
sizeof(struct ieee80211_meshcntl))) == NULL) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, NULL,
|
|
"data too short: expecting %u", hdrspace);
|
|
vap->iv_stats.is_rx_tooshort++;
|
|
goto out; /* XXX */
|
|
}
|
|
/*
|
|
* Now calculate the full extent of the headers. Note
|
|
* mesh_decap will pull up anything we didn't get
|
|
* above when it strips the 802.11 headers.
|
|
*/
|
|
mc = (const struct ieee80211_meshcntl *)
|
|
(mtod(m, const uint8_t *) + hdrspace);
|
|
meshdrlen = sizeof(struct ieee80211_meshcntl) +
|
|
(mc->mc_flags & 3) * IEEE80211_ADDR_LEN;
|
|
hdrspace += meshdrlen;
|
|
seq = LE_READ_4(mc->mc_seq);
|
|
if (IEEE80211_IS_MULTICAST(wh->i_addr1))
|
|
addr = wh->i_addr3;
|
|
else
|
|
addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4;
|
|
if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
|
|
addr, "data", "%s", "not to me");
|
|
vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */
|
|
goto out;
|
|
}
|
|
if (mesh_checkpseq(vap, addr, seq) != 0) {
|
|
vap->iv_stats.is_rx_dup++;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Potentially forward packet. See table s36 (p140)
|
|
* for the rules. XXX tap fwd'd packets not for us?
|
|
*/
|
|
if (dir == IEEE80211_FC1_DIR_FROMDS ||
|
|
!mesh_isucastforme(vap, wh, mc)) {
|
|
mesh_forward(vap, m, mc);
|
|
if (dir == IEEE80211_FC1_DIR_DSTODS)
|
|
goto out;
|
|
/* NB: fall thru to deliver mcast frames locally */
|
|
}
|
|
|
|
/*
|
|
* Save QoS bits for use below--before we strip the header.
|
|
*/
|
|
if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
|
|
qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
|
|
((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
|
|
((struct ieee80211_qosframe *)wh)->i_qos[0];
|
|
} else
|
|
qos = 0;
|
|
/*
|
|
* Next up, any fragmentation.
|
|
*/
|
|
if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
|
|
m = ieee80211_defrag(ni, m, hdrspace);
|
|
if (m == NULL) {
|
|
/* Fragment dropped or frame not complete yet */
|
|
goto out;
|
|
}
|
|
}
|
|
wh = NULL; /* no longer valid, catch any uses */
|
|
|
|
if (ieee80211_radiotap_active_vap(vap))
|
|
ieee80211_radiotap_rx(vap, m);
|
|
need_tap = 0;
|
|
|
|
/*
|
|
* Finally, strip the 802.11 header.
|
|
*/
|
|
m = mesh_decap(vap, m, hdrspace, meshdrlen);
|
|
if (m == NULL) {
|
|
/* XXX mask bit to check for both */
|
|
/* don't count Null data frames as errors */
|
|
if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
|
|
subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
|
|
goto out;
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
|
|
ni->ni_macaddr, "data", "%s", "decap error");
|
|
vap->iv_stats.is_rx_decap++;
|
|
IEEE80211_NODE_STAT(ni, rx_decap);
|
|
goto err;
|
|
}
|
|
if (qos & IEEE80211_QOS_AMSDU) {
|
|
m = ieee80211_decap_amsdu(ni, m);
|
|
if (m == NULL)
|
|
return IEEE80211_FC0_TYPE_DATA;
|
|
}
|
|
ieee80211_deliver_data(vap, ni, m);
|
|
return type;
|
|
case IEEE80211_FC0_TYPE_MGT:
|
|
vap->iv_stats.is_rx_mgmt++;
|
|
IEEE80211_NODE_STAT(ni, rx_mgmt);
|
|
if (dir != IEEE80211_FC1_DIR_NODS) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "mgt", "incorrect dir 0x%x", dir);
|
|
vap->iv_stats.is_rx_wrongdir++;
|
|
goto err;
|
|
}
|
|
if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
|
|
ni->ni_macaddr, "mgt", "too short: len %u",
|
|
m->m_pkthdr.len);
|
|
vap->iv_stats.is_rx_tooshort++;
|
|
goto out;
|
|
}
|
|
#ifdef IEEE80211_DEBUG
|
|
if ((ieee80211_msg_debug(vap) &&
|
|
(vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) ||
|
|
ieee80211_msg_dumppkts(vap)) {
|
|
if_printf(ifp, "received %s from %s rssi %d\n",
|
|
ieee80211_mgt_subtype_name[subtype >>
|
|
IEEE80211_FC0_SUBTYPE_SHIFT],
|
|
ether_sprintf(wh->i_addr2), rssi);
|
|
}
|
|
#endif
|
|
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "WEP set but not permitted");
|
|
vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
|
|
goto out;
|
|
}
|
|
vap->iv_recv_mgmt(ni, m, subtype, rssi, nf);
|
|
goto out;
|
|
case IEEE80211_FC0_TYPE_CTL:
|
|
vap->iv_stats.is_rx_ctl++;
|
|
IEEE80211_NODE_STAT(ni, rx_ctrl);
|
|
goto out;
|
|
default:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
wh, "bad", "frame type 0x%x", type);
|
|
/* should not come here */
|
|
break;
|
|
}
|
|
err:
|
|
ifp->if_ierrors++;
|
|
out:
|
|
if (m != NULL) {
|
|
if (need_tap && ieee80211_radiotap_active_vap(vap))
|
|
ieee80211_radiotap_rx(vap, m);
|
|
m_freem(m);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
static void
|
|
mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
|
|
int rssi, int nf)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211_frame *wh;
|
|
uint8_t *frm, *efrm;
|
|
|
|
wh = mtod(m0, struct ieee80211_frame *);
|
|
frm = (uint8_t *)&wh[1];
|
|
efrm = mtod(m0, uint8_t *) + m0->m_len;
|
|
switch (subtype) {
|
|
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_BEACON:
|
|
{
|
|
struct ieee80211_scanparams scan;
|
|
/*
|
|
* We process beacon/probe response
|
|
* frames to discover neighbors.
|
|
*/
|
|
if (ieee80211_parse_beacon(ni, m0, &scan) != 0)
|
|
return;
|
|
/*
|
|
* Count frame now that we know it's to be processed.
|
|
*/
|
|
if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
|
|
vap->iv_stats.is_rx_beacon++; /* XXX remove */
|
|
IEEE80211_NODE_STAT(ni, rx_beacons);
|
|
} else
|
|
IEEE80211_NODE_STAT(ni, rx_proberesp);
|
|
/*
|
|
* If scanning, just pass information to the scan module.
|
|
*/
|
|
if (ic->ic_flags & IEEE80211_F_SCAN) {
|
|
if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) {
|
|
/*
|
|
* Actively scanning a channel marked passive;
|
|
* send a probe request now that we know there
|
|
* is 802.11 traffic present.
|
|
*
|
|
* XXX check if the beacon we recv'd gives
|
|
* us what we need and suppress the probe req
|
|
*/
|
|
ieee80211_probe_curchan(vap, 1);
|
|
ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN;
|
|
}
|
|
ieee80211_add_scan(vap, &scan, wh,
|
|
subtype, rssi, nf);
|
|
return;
|
|
}
|
|
|
|
/* The rest of this code assumes we are running */
|
|
if (vap->iv_state != IEEE80211_S_RUN)
|
|
return;
|
|
/*
|
|
* Ignore non-mesh STAs.
|
|
*/
|
|
if ((scan.capinfo &
|
|
(IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) ||
|
|
scan.meshid == NULL || scan.meshconf == NULL) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "beacon", "%s", "not a mesh sta");
|
|
vap->iv_stats.is_mesh_wrongmesh++;
|
|
return;
|
|
}
|
|
/*
|
|
* Ignore STAs for other mesh networks.
|
|
*/
|
|
if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 ||
|
|
mesh_verify_meshconf(vap, scan.meshconf)) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "beacon", "%s", "not for our mesh");
|
|
vap->iv_stats.is_mesh_wrongmesh++;
|
|
return;
|
|
}
|
|
/*
|
|
* Peer only based on the current ACL policy.
|
|
*/
|
|
if (vap->iv_acl != NULL &&
|
|
!vap->iv_acl->iac_check(vap, wh->i_addr2)) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
|
|
wh, NULL, "%s", "disallowed by ACL");
|
|
vap->iv_stats.is_rx_acl++;
|
|
return;
|
|
}
|
|
/*
|
|
* Do neighbor discovery.
|
|
*/
|
|
if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) {
|
|
/*
|
|
* Create a new entry in the neighbor table.
|
|
*/
|
|
ni = ieee80211_add_neighbor(vap, wh, &scan);
|
|
}
|
|
/*
|
|
* Automatically peer with discovered nodes if possible.
|
|
* XXX backoff on repeated failure
|
|
*/
|
|
if (ni != vap->iv_bss &&
|
|
(ms->ms_flags & IEEE80211_MESHFLAGS_AP) &&
|
|
ni->ni_mlstate == IEEE80211_NODE_MESH_IDLE) {
|
|
uint16_t args[1];
|
|
|
|
ni->ni_mlpid = mesh_generateid(vap);
|
|
if (ni->ni_mlpid == 0)
|
|
return;
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT);
|
|
args[0] = ni->ni_mlpid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_OPEN, args);
|
|
ni->ni_mlrcnt = 0;
|
|
mesh_peer_timeout_setup(ni);
|
|
}
|
|
break;
|
|
}
|
|
case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
|
|
{
|
|
uint8_t *ssid, *meshid, *rates, *xrates;
|
|
uint8_t *sfrm;
|
|
|
|
if (vap->iv_state != IEEE80211_S_RUN) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "wrong state %s",
|
|
ieee80211_state_name[vap->iv_state]);
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
return;
|
|
}
|
|
if (IEEE80211_IS_MULTICAST(wh->i_addr2)) {
|
|
/* frame must be directed */
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "not unicast");
|
|
vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */
|
|
return;
|
|
}
|
|
/*
|
|
* prreq frame format
|
|
* [tlv] ssid
|
|
* [tlv] supported rates
|
|
* [tlv] extended supported rates
|
|
* [tlv] mesh id
|
|
*/
|
|
ssid = meshid = rates = xrates = NULL;
|
|
sfrm = frm;
|
|
while (efrm - frm > 1) {
|
|
IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
|
|
switch (*frm) {
|
|
case IEEE80211_ELEMID_SSID:
|
|
ssid = frm;
|
|
break;
|
|
case IEEE80211_ELEMID_RATES:
|
|
rates = frm;
|
|
break;
|
|
case IEEE80211_ELEMID_XRATES:
|
|
xrates = frm;
|
|
break;
|
|
case IEEE80211_ELEMID_MESHID:
|
|
meshid = frm;
|
|
break;
|
|
}
|
|
frm += frm[2] + 2;
|
|
}
|
|
IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
|
|
IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
|
|
if (xrates != NULL)
|
|
IEEE80211_VERIFY_ELEMENT(xrates,
|
|
IEEE80211_RATE_MAXSIZE - rates[1], return);
|
|
if (meshid != NULL)
|
|
IEEE80211_VERIFY_ELEMENT(meshid,
|
|
IEEE80211_MESHID_LEN, return);
|
|
/* NB: meshid, not ssid */
|
|
IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return);
|
|
|
|
/* XXX find a better class or define it's own */
|
|
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2,
|
|
"%s", "recv probe req");
|
|
/*
|
|
* Some legacy 11b clients cannot hack a complete
|
|
* probe response frame. When the request includes
|
|
* only a bare-bones rate set, communicate this to
|
|
* the transmit side.
|
|
*/
|
|
ieee80211_send_proberesp(vap, wh->i_addr2, 0);
|
|
break;
|
|
}
|
|
case IEEE80211_FC0_SUBTYPE_ACTION:
|
|
if (vap->iv_state != IEEE80211_S_RUN) {
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
break;
|
|
}
|
|
/*
|
|
* We received an action for an unknown neighbor.
|
|
* XXX: wait for it to beacon or create ieee80211_node?
|
|
*/
|
|
if (ni == vap->iv_bss) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
|
|
wh, NULL, "%s", "unknown node");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
break;
|
|
}
|
|
/*
|
|
* Discard if not for us.
|
|
*/
|
|
if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) &&
|
|
!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_MESH,
|
|
wh, NULL, "%s", "not for me");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
break;
|
|
}
|
|
/* XXX parse_action is a bit useless now */
|
|
if (ieee80211_parse_action(ni, m0) == 0)
|
|
ic->ic_recv_action(ni, wh, frm, efrm);
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
|
|
case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
|
|
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
case IEEE80211_FC0_SUBTYPE_DISASSOC:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "not handled");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
return;
|
|
default:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
wh, "mgt", "subtype 0x%x not handled", subtype);
|
|
vap->iv_stats.is_rx_badsubtype++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse meshpeering action ie's for open+confirm frames; the
|
|
* important bits are returned in the supplied structure.
|
|
*/
|
|
static const struct ieee80211_meshpeer_ie *
|
|
mesh_parse_meshpeering_action(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */
|
|
const uint8_t *frm, const uint8_t *efrm,
|
|
struct ieee80211_meshpeer_ie *mp, uint8_t subtype)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
const struct ieee80211_meshpeer_ie *mpie;
|
|
const uint8_t *meshid, *meshconf, *meshpeer;
|
|
|
|
meshid = meshconf = meshpeer = NULL;
|
|
while (efrm - frm > 1) {
|
|
IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL);
|
|
switch (*frm) {
|
|
case IEEE80211_ELEMID_MESHID:
|
|
meshid = frm;
|
|
break;
|
|
case IEEE80211_ELEMID_MESHCONF:
|
|
meshconf = frm;
|
|
break;
|
|
case IEEE80211_ELEMID_MESHPEER:
|
|
meshpeer = frm;
|
|
mpie = (const struct ieee80211_meshpeer_ie *) frm;
|
|
memset(mp, 0, sizeof(*mp));
|
|
mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid);
|
|
/* NB: peer link ID is optional on these frames */
|
|
if (subtype == IEEE80211_MESH_PEER_LINK_CLOSE &&
|
|
mpie->peer_len == 8) {
|
|
mp->peer_linkid = 0;
|
|
mp->peer_rcode = LE_READ_2(&mpie->peer_linkid);
|
|
} else {
|
|
mp->peer_linkid = LE_READ_2(&mpie->peer_linkid);
|
|
mp->peer_rcode = LE_READ_2(&mpie->peer_rcode);
|
|
}
|
|
break;
|
|
}
|
|
frm += frm[1] + 2;
|
|
}
|
|
|
|
/*
|
|
* Verify the contents of the frame. Action frames with
|
|
* close subtype don't have a Mesh Configuration IE.
|
|
* If if fails validation, close the peer link.
|
|
*/
|
|
KASSERT(meshpeer != NULL &&
|
|
subtype != IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
("parsing close action"));
|
|
|
|
if (mesh_verify_meshid(vap, meshid) ||
|
|
mesh_verify_meshpeer(vap, subtype, meshpeer) ||
|
|
mesh_verify_meshconf(vap, meshconf)) {
|
|
uint16_t args[3];
|
|
|
|
IEEE80211_DISCARD(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
|
|
wh, NULL, "%s", "not for our mesh");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_IDLE:
|
|
case IEEE80211_NODE_MESH_ESTABLISHED:
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
/* ignore */
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENSNT:
|
|
case IEEE80211_NODE_MESH_OPENRCV:
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
return (const struct ieee80211_meshpeer_ie *) mp;
|
|
}
|
|
|
|
static int
|
|
mesh_recv_action_meshpeering_open(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_meshpeer_ie ie;
|
|
const struct ieee80211_meshpeer_ie *meshpeer;
|
|
uint16_t args[3];
|
|
|
|
/* +2+2 for action + code + capabilites */
|
|
meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie,
|
|
IEEE80211_ACTION_MESHPEERING_OPEN);
|
|
if (meshpeer == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
/* XXX move up */
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid);
|
|
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_IDLE:
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
|
|
ni->ni_mllid = meshpeer->peer_llinkid;
|
|
ni->ni_mlpid = mesh_generateid(vap);
|
|
if (ni->ni_mlpid == 0)
|
|
return 0; /* XXX */
|
|
args[0] = ni->ni_mlpid;
|
|
/* Announce we're open too... */
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_OPEN, args);
|
|
/* ...and confirm the link. */
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
args);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENRCV:
|
|
/* Wrong Link ID */
|
|
if (ni->ni_mllid != meshpeer->peer_llinkid) {
|
|
args[0] = ni->ni_mllid;
|
|
args[1] = ni->ni_mlpid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
}
|
|
/* Duplicate open, confirm again. */
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
args);
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENSNT:
|
|
ni->ni_mllid = meshpeer->peer_llinkid;
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV);
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
args);
|
|
/* NB: don't setup/clear any timeout */
|
|
break;
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
if (ni->ni_mlpid != meshpeer->peer_linkid ||
|
|
ni->ni_mllid != meshpeer->peer_llinkid) {
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni,
|
|
IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
}
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
|
|
ni->ni_mllid = meshpeer->peer_llinkid;
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
args);
|
|
mesh_peer_timeout_stop(ni);
|
|
break;
|
|
case IEEE80211_NODE_MESH_ESTABLISHED:
|
|
if (ni->ni_mllid != meshpeer->peer_llinkid) {
|
|
args[0] = ni->ni_mllid;
|
|
args[1] = ni->ni_mlpid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
}
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM,
|
|
args);
|
|
break;
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = meshpeer->peer_llinkid;
|
|
args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_meshpeer_ie ie;
|
|
const struct ieee80211_meshpeer_ie *meshpeer;
|
|
uint16_t args[3];
|
|
|
|
/* +2+2+2+2 for action + code + capabilites + status code + AID */
|
|
meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie,
|
|
IEEE80211_ACTION_MESHPEERING_CONFIRM);
|
|
if (meshpeer == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"recv PEER CONFIRM, local id 0x%x, peer id 0x%x",
|
|
meshpeer->peer_llinkid, meshpeer->peer_linkid);
|
|
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_OPENRCV:
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED);
|
|
mesh_peer_timeout_stop(ni);
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENSNT:
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV);
|
|
break;
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = meshpeer->peer_llinkid;
|
|
args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
break;
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
if (ni->ni_mllid != meshpeer->peer_llinkid) {
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
args[2] = IEEE80211_REASON_PEER_LINK_CANCELED;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
}
|
|
break;
|
|
default:
|
|
IEEE80211_DISCARD(vap,
|
|
IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
|
|
wh, NULL, "received confirm in invalid state %d",
|
|
ni->ni_mlstate);
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
mesh_recv_action_meshpeering_close(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
uint16_t args[3];
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH,
|
|
ni, "%s", "recv PEER CLOSE");
|
|
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_IDLE:
|
|
/* ignore */
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENRCV:
|
|
case IEEE80211_NODE_MESH_OPENSNT:
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
case IEEE80211_NODE_MESH_ESTABLISHED:
|
|
args[0] = ni->ni_mlpid;
|
|
args[1] = ni->ni_mllid;
|
|
args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE,
|
|
args);
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
|
|
mesh_peer_timeout_setup(ni);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Link Metric handling.
|
|
*/
|
|
static int
|
|
mesh_recv_action_meshlmetric_req(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
uint32_t metric;
|
|
|
|
metric = mesh_airtime_calc(ni);
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHLMETRIC,
|
|
IEEE80211_ACTION_MESHLMETRIC_REP,
|
|
&metric);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
mesh_recv_action_meshlmetric_rep(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const uint8_t *frm, const uint8_t *efrm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
mesh_send_action(struct ieee80211_node *ni, struct mbuf *m)
|
|
{
|
|
struct ieee80211_bpf_params params;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.ibp_pri = WME_AC_VO;
|
|
params.ibp_rate0 = ni->ni_txparms->mgmtrate;
|
|
/* XXX ucast/mcast */
|
|
params.ibp_try0 = ni->ni_txparms->maxretry;
|
|
params.ibp_power = ni->ni_txpower;
|
|
return ieee80211_mgmt_output(ni, m, IEEE80211_FC0_SUBTYPE_ACTION,
|
|
¶ms);
|
|
}
|
|
|
|
#define ADDSHORT(frm, v) do { \
|
|
frm[0] = (v) & 0xff; \
|
|
frm[1] = (v) >> 8; \
|
|
frm += 2; \
|
|
} while (0)
|
|
#define ADDWORD(frm, v) do { \
|
|
frm[0] = (v) & 0xff; \
|
|
frm[1] = ((v) >> 8) & 0xff; \
|
|
frm[2] = ((v) >> 16) & 0xff; \
|
|
frm[3] = ((v) >> 24) & 0xff; \
|
|
frm += 4; \
|
|
} while (0)
|
|
|
|
static int
|
|
mesh_send_action_meshpeering_open(struct ieee80211_node *ni,
|
|
int category, int action, void *args0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t *args = args0;
|
|
const struct ieee80211_rateset *rs;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"send PEER OPEN action: localid 0x%x", args[0]);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
+ sizeof(uint16_t) /* capabilites */
|
|
+ 2 + IEEE80211_RATE_SIZE
|
|
+ 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
|
|
+ 2 + IEEE80211_MESHID_LEN
|
|
+ sizeof(struct ieee80211_meshconf_ie)
|
|
+ sizeof(struct ieee80211_meshpeer_ie)
|
|
);
|
|
if (m != NULL) {
|
|
/*
|
|
* mesh peer open action frame format:
|
|
* [1] category
|
|
* [1] action
|
|
* [2] capabilities
|
|
* [tlv] rates
|
|
* [tlv] xrates
|
|
* [tlv] mesh id
|
|
* [tlv] mesh conf
|
|
* [tlv] mesh peer link mgmt
|
|
*/
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
|
|
rs = ieee80211_get_suprates(ic, ic->ic_curchan);
|
|
frm = ieee80211_add_rates(frm, rs);
|
|
frm = ieee80211_add_xrates(frm, rs);
|
|
frm = ieee80211_add_meshid(frm, vap);
|
|
frm = ieee80211_add_meshconf(frm, vap);
|
|
frm = ieee80211_add_meshpeer(frm, IEEE80211_MESH_PEER_LINK_OPEN,
|
|
args[0], 0, 0);
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return mesh_send_action(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni,
|
|
int category, int action, void *args0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t *args = args0;
|
|
const struct ieee80211_rateset *rs;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"send PEER CONFIRM action: localid 0x%x, peerid 0x%x",
|
|
args[0], args[1]);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
+ sizeof(uint16_t) /* capabilites */
|
|
+ sizeof(uint16_t) /* status code */
|
|
+ sizeof(uint16_t) /* AID */
|
|
+ 2 + IEEE80211_RATE_SIZE
|
|
+ 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE)
|
|
+ 2 + IEEE80211_MESHID_LEN
|
|
+ sizeof(struct ieee80211_meshconf_ie)
|
|
+ sizeof(struct ieee80211_meshpeer_ie)
|
|
);
|
|
if (m != NULL) {
|
|
/*
|
|
* mesh peer confirm action frame format:
|
|
* [1] category
|
|
* [1] action
|
|
* [2] capabilities
|
|
* [2] status code
|
|
* [2] association id (peer ID)
|
|
* [tlv] rates
|
|
* [tlv] xrates
|
|
* [tlv] mesh id
|
|
* [tlv] mesh conf
|
|
* [tlv] mesh peer link mgmt
|
|
*/
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan));
|
|
ADDSHORT(frm, 0); /* status code */
|
|
ADDSHORT(frm, args[1]); /* AID */
|
|
rs = ieee80211_get_suprates(ic, ic->ic_curchan);
|
|
frm = ieee80211_add_rates(frm, rs);
|
|
frm = ieee80211_add_xrates(frm, rs);
|
|
frm = ieee80211_add_meshid(frm, vap);
|
|
frm = ieee80211_add_meshconf(frm, vap);
|
|
frm = ieee80211_add_meshpeer(frm,
|
|
IEEE80211_MESH_PEER_LINK_CONFIRM,
|
|
args[0], args[1], 0);
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return mesh_send_action(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_send_action_meshpeering_close(struct ieee80211_node *ni,
|
|
int category, int action, void *args0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint16_t *args = args0;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d",
|
|
args[0], args[1], args[2]);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
+ sizeof(uint16_t) /* reason code */
|
|
+ 2 + IEEE80211_MESHID_LEN
|
|
+ sizeof(struct ieee80211_meshpeer_ie)
|
|
);
|
|
if (m != NULL) {
|
|
/*
|
|
* mesh peer close action frame format:
|
|
* [1] category
|
|
* [1] action
|
|
* [2] reason code
|
|
* [tlv] mesh id
|
|
* [tlv] mesh peer link mgmt
|
|
*/
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
ADDSHORT(frm, args[2]); /* reason code */
|
|
frm = ieee80211_add_meshid(frm, vap);
|
|
frm = ieee80211_add_meshpeer(frm,
|
|
IEEE80211_MESH_PEER_LINK_CLOSE,
|
|
args[0], args[1], args[2]);
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return mesh_send_action(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_send_action_meshlink_request(struct ieee80211_node *ni,
|
|
int category, int action, void *arg0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"%s", "send LINK METRIC REQUEST action");
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
);
|
|
if (m != NULL) {
|
|
/*
|
|
* mesh link metric request
|
|
* [1] category
|
|
* [1] action
|
|
*/
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return mesh_send_action(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_send_action_meshlink_reply(struct ieee80211_node *ni,
|
|
int category, int action, void *args0)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
uint32_t *metric = args0;
|
|
struct mbuf *m;
|
|
uint8_t *frm;
|
|
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni,
|
|
"send LINK METRIC REPLY action: metric 0x%x", *metric);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
|
|
"ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__,
|
|
ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1);
|
|
ieee80211_ref_node(ni);
|
|
|
|
m = ieee80211_getmgtframe(&frm,
|
|
ic->ic_headroom + sizeof(struct ieee80211_frame),
|
|
sizeof(uint16_t) /* action+category */
|
|
+ sizeof(struct ieee80211_meshlmetric_ie)
|
|
);
|
|
if (m != NULL) {
|
|
/*
|
|
* mesh link metric reply
|
|
* [1] category
|
|
* [1] action
|
|
* [tlv] mesh link metric
|
|
*/
|
|
*frm++ = category;
|
|
*frm++ = action;
|
|
frm = ieee80211_add_meshlmetric(frm, *metric);
|
|
m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *);
|
|
return mesh_send_action(ni, m);
|
|
} else {
|
|
vap->iv_stats.is_tx_nobuf++;
|
|
ieee80211_free_node(ni);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
|
|
static void
|
|
mesh_peer_timeout_setup(struct ieee80211_node *ni)
|
|
{
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
ni->ni_mltval = ieee80211_mesh_holdingtimeout;
|
|
break;
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
ni->ni_mltval = ieee80211_mesh_confirmtimeout;
|
|
break;
|
|
case IEEE80211_NODE_MESH_IDLE:
|
|
ni->ni_mltval = 0;
|
|
break;
|
|
default:
|
|
ni->ni_mltval = ieee80211_mesh_retrytimeout;
|
|
break;
|
|
}
|
|
if (ni->ni_mltval)
|
|
callout_reset(&ni->ni_mltimer, ni->ni_mltval,
|
|
mesh_peer_timeout_cb, ni);
|
|
}
|
|
|
|
/*
|
|
* Same as above but backoffs timer statisically 50%.
|
|
*/
|
|
static void
|
|
mesh_peer_timeout_backoff(struct ieee80211_node *ni)
|
|
{
|
|
uint32_t r;
|
|
|
|
r = arc4random();
|
|
ni->ni_mltval += r % ni->ni_mltval;
|
|
callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb,
|
|
ni);
|
|
}
|
|
|
|
static __inline void
|
|
mesh_peer_timeout_stop(struct ieee80211_node *ni)
|
|
{
|
|
callout_drain(&ni->ni_mltimer);
|
|
}
|
|
|
|
/*
|
|
* Mesh Peer Link Management FSM timeout handling.
|
|
*/
|
|
static void
|
|
mesh_peer_timeout_cb(void *arg)
|
|
{
|
|
struct ieee80211_node *ni = (struct ieee80211_node *)arg;
|
|
uint16_t args[3];
|
|
|
|
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH,
|
|
ni, "mesh link timeout, state %d, retry counter %d",
|
|
ni->ni_mlstate, ni->ni_mlrcnt);
|
|
|
|
switch (ni->ni_mlstate) {
|
|
case IEEE80211_NODE_MESH_IDLE:
|
|
case IEEE80211_NODE_MESH_ESTABLISHED:
|
|
break;
|
|
case IEEE80211_NODE_MESH_OPENSNT:
|
|
case IEEE80211_NODE_MESH_OPENRCV:
|
|
if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
|
|
args[0] = ni->ni_mlpid;
|
|
args[2] = IEEE80211_REASON_MESH_MAX_RETRIES;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE, args);
|
|
ni->ni_mlrcnt = 0;
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
} else {
|
|
args[0] = ni->ni_mlpid;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_OPEN, args);
|
|
ni->ni_mlrcnt++;
|
|
mesh_peer_timeout_backoff(ni);
|
|
}
|
|
break;
|
|
case IEEE80211_NODE_MESH_CONFIRMRCV:
|
|
if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) {
|
|
args[0] = ni->ni_mlpid;
|
|
args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT;
|
|
ieee80211_send_action(ni,
|
|
IEEE80211_ACTION_CAT_MESHPEERING,
|
|
IEEE80211_ACTION_MESHPEERING_CLOSE, args);
|
|
ni->ni_mlrcnt = 0;
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING);
|
|
mesh_peer_timeout_setup(ni);
|
|
} else {
|
|
ni->ni_mlrcnt++;
|
|
mesh_peer_timeout_setup(ni);
|
|
}
|
|
break;
|
|
case IEEE80211_NODE_MESH_HOLDING:
|
|
mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
|
|
if (ie == NULL || ie[1] != ms->ms_idlen)
|
|
return 1;
|
|
return memcmp(ms->ms_id, ie + 2, ms->ms_idlen);
|
|
}
|
|
|
|
/*
|
|
* Check if we are using the same algorithms for this mesh.
|
|
*/
|
|
static int
|
|
mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie)
|
|
{
|
|
const struct ieee80211_meshconf_ie *meshconf =
|
|
(const struct ieee80211_meshconf_ie *) ie;
|
|
const struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
uint16_t cap;
|
|
|
|
if (meshconf == NULL)
|
|
return 1;
|
|
if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"unknown path selection algorithm: 0x%x\n",
|
|
meshconf->conf_pselid);
|
|
return 1;
|
|
}
|
|
if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"unknown path metric algorithm: 0x%x\n",
|
|
meshconf->conf_pmetid);
|
|
return 1;
|
|
}
|
|
if (meshconf->conf_ccid != 0) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"unknown congestion control algorithm: 0x%x\n",
|
|
meshconf->conf_ccid);
|
|
return 1;
|
|
}
|
|
if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"unknown sync algorithm: 0x%x\n",
|
|
meshconf->conf_syncid);
|
|
return 1;
|
|
}
|
|
if (meshconf->conf_authid != 0) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"unknown auth auth algorithm: 0x%x\n",
|
|
meshconf->conf_pselid);
|
|
return 1;
|
|
}
|
|
/* NB: conf_cap is only read correctly here */
|
|
cap = LE_READ_2(&meshconf->conf_cap);
|
|
/* Not accepting peers */
|
|
if (!(cap & IEEE80211_MESHCONF_CAP_AP)) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH,
|
|
"not accepting peers: 0x%x\n", meshconf->conf_cap);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype,
|
|
const uint8_t *ie)
|
|
{
|
|
const struct ieee80211_meshpeer_ie *meshpeer =
|
|
(const struct ieee80211_meshpeer_ie *) ie;
|
|
|
|
if (meshpeer == NULL || meshpeer->peer_len < 6 ||
|
|
meshpeer->peer_len > 10)
|
|
return 1;
|
|
switch (subtype) {
|
|
case IEEE80211_MESH_PEER_LINK_OPEN:
|
|
if (meshpeer->peer_len != 6)
|
|
return 1;
|
|
break;
|
|
case IEEE80211_MESH_PEER_LINK_CONFIRM:
|
|
if (meshpeer->peer_len != 8)
|
|
return 1;
|
|
break;
|
|
case IEEE80211_MESH_PEER_LINK_CLOSE:
|
|
if (meshpeer->peer_len < 8)
|
|
return 1;
|
|
if (meshpeer->peer_len == 8 && meshpeer->peer_linkid != 0)
|
|
return 1;
|
|
if (meshpeer->peer_rcode == 0)
|
|
return 1;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Add a Mesh ID IE to a frame.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
|
|
KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap"));
|
|
|
|
*frm++ = IEEE80211_ELEMID_MESHID;
|
|
*frm++ = ms->ms_idlen;
|
|
memcpy(frm, ms->ms_id, ms->ms_idlen);
|
|
return frm + ms->ms_idlen;
|
|
}
|
|
|
|
/*
|
|
* Add a Mesh Configuration IE to a frame.
|
|
* For now just use HWMP routing, Airtime link metric, Null Congestion
|
|
* Signaling, Null Sync Protocol and Null Authentication.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap)
|
|
{
|
|
const struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
uint16_t caps;
|
|
|
|
KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
|
|
|
|
*frm++ = IEEE80211_ELEMID_MESHCONF;
|
|
*frm++ = sizeof(struct ieee80211_meshconf_ie) - 2;
|
|
*frm++ = ms->ms_ppath->mpp_ie; /* path selection */
|
|
*frm++ = ms->ms_pmetric->mpm_ie; /* link metric */
|
|
*frm++ = IEEE80211_MESHCONF_CC_DISABLED;
|
|
*frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF;
|
|
*frm++ = IEEE80211_MESHCONF_AUTH_DISABLED;
|
|
/* NB: set the number of neighbors before the rest */
|
|
*frm = (ms->ms_neighbors > 15 ? 15 : ms->ms_neighbors) << 1;
|
|
if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL)
|
|
*frm |= IEEE80211_MESHCONF_FORM_MP;
|
|
frm += 1;
|
|
caps = 0;
|
|
if (ms->ms_flags & IEEE80211_MESHFLAGS_AP)
|
|
caps |= IEEE80211_MESHCONF_CAP_AP;
|
|
if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD)
|
|
caps |= IEEE80211_MESHCONF_CAP_FWRD;
|
|
ADDSHORT(frm, caps);
|
|
return frm;
|
|
}
|
|
|
|
/*
|
|
* Add a Mesh Peer Management IE to a frame.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid,
|
|
uint16_t peerid, uint16_t reason)
|
|
{
|
|
/* XXX change for AH */
|
|
static const uint8_t meshpeerproto[4] = IEEE80211_MESH_PEER_PROTO;
|
|
|
|
KASSERT(localid != 0, ("localid == 0"));
|
|
|
|
*frm++ = IEEE80211_ELEMID_MESHPEER;
|
|
switch (subtype) {
|
|
case IEEE80211_MESH_PEER_LINK_OPEN:
|
|
*frm++ = 6; /* length */
|
|
memcpy(frm, meshpeerproto, 4);
|
|
frm += 4;
|
|
ADDSHORT(frm, localid); /* local ID */
|
|
break;
|
|
case IEEE80211_MESH_PEER_LINK_CONFIRM:
|
|
KASSERT(peerid != 0, ("sending peer confirm without peer id"));
|
|
*frm++ = 8; /* length */
|
|
memcpy(frm, meshpeerproto, 4);
|
|
frm += 4;
|
|
ADDSHORT(frm, localid); /* local ID */
|
|
ADDSHORT(frm, peerid); /* peer ID */
|
|
break;
|
|
case IEEE80211_MESH_PEER_LINK_CLOSE:
|
|
if (peerid)
|
|
*frm++ = 10; /* length */
|
|
else
|
|
*frm++ = 8; /* length */
|
|
memcpy(frm, meshpeerproto, 4);
|
|
frm += 4;
|
|
ADDSHORT(frm, localid); /* local ID */
|
|
if (peerid)
|
|
ADDSHORT(frm, peerid); /* peer ID */
|
|
ADDSHORT(frm, reason);
|
|
break;
|
|
}
|
|
return frm;
|
|
}
|
|
|
|
/*
|
|
* Compute an Airtime Link Metric for the link with this node.
|
|
*
|
|
* Based on Draft 3.0 spec (11B.10, p.149).
|
|
*/
|
|
/*
|
|
* Max 802.11s overhead.
|
|
*/
|
|
#define IEEE80211_MESH_MAXOVERHEAD \
|
|
(sizeof(struct ieee80211_qosframe_addr4) \
|
|
+ sizeof(struct ieee80211_meshcntl_ae11) \
|
|
+ sizeof(struct llc) \
|
|
+ IEEE80211_ADDR_LEN \
|
|
+ IEEE80211_WEP_IVLEN \
|
|
+ IEEE80211_WEP_KIDLEN \
|
|
+ IEEE80211_WEP_CRCLEN \
|
|
+ IEEE80211_WEP_MICLEN \
|
|
+ IEEE80211_CRC_LEN)
|
|
uint32_t
|
|
mesh_airtime_calc(struct ieee80211_node *ni)
|
|
{
|
|
#define M_BITS 8
|
|
#define S_FACTOR (2 * M_BITS)
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ifnet *ifp = ni->ni_vap->iv_ifp;
|
|
const static int nbits = 8192 << M_BITS;
|
|
uint32_t overhead, rate, errrate;
|
|
uint64_t res;
|
|
|
|
/* Time to transmit a frame */
|
|
rate = ni->ni_txrate;
|
|
overhead = ieee80211_compute_duration(ic->ic_rt,
|
|
ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS;
|
|
/* Error rate in percentage */
|
|
/* XXX assuming small failures are ok */
|
|
errrate = (((ifp->if_oerrors +
|
|
ifp->if_ierrors) / 100) << M_BITS) / 100;
|
|
res = (overhead + (nbits / rate)) *
|
|
((1 << S_FACTOR) / ((1 << M_BITS) - errrate));
|
|
|
|
return (uint32_t)(res >> S_FACTOR);
|
|
#undef M_BITS
|
|
#undef S_FACTOR
|
|
}
|
|
|
|
/*
|
|
* Add a Mesh Link Metric report IE to a frame.
|
|
*/
|
|
uint8_t *
|
|
ieee80211_add_meshlmetric(uint8_t *frm, uint32_t metric)
|
|
{
|
|
*frm++ = IEEE80211_ELEMID_MESHLINK;
|
|
*frm++ = 4;
|
|
ADDWORD(frm, metric);
|
|
return frm;
|
|
}
|
|
#undef ADDSHORT
|
|
#undef ADDWORD
|
|
|
|
/*
|
|
* Initialize any mesh-specific node state.
|
|
*/
|
|
void
|
|
ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni)
|
|
{
|
|
ni->ni_flags |= IEEE80211_NODE_QOS;
|
|
callout_init(&ni->ni_mltimer, CALLOUT_MPSAFE);
|
|
}
|
|
|
|
/*
|
|
* Cleanup any mesh-specific node state.
|
|
*/
|
|
void
|
|
ieee80211_mesh_node_cleanup(struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
|
|
callout_drain(&ni->ni_mltimer);
|
|
/* NB: short-circuit callbacks after mesh_vdetach */
|
|
if (vap->iv_mesh != NULL)
|
|
ms->ms_ppath->mpp_peerdown(ni);
|
|
}
|
|
|
|
void
|
|
ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie)
|
|
{
|
|
ni->ni_meshidlen = ie[1];
|
|
memcpy(ni->ni_meshid, ie + 2, ie[1]);
|
|
}
|
|
|
|
/*
|
|
* Setup mesh-specific node state on neighbor discovery.
|
|
*/
|
|
void
|
|
ieee80211_mesh_init_neighbor(struct ieee80211_node *ni,
|
|
const struct ieee80211_frame *wh,
|
|
const struct ieee80211_scanparams *sp)
|
|
{
|
|
ieee80211_parse_meshid(ni, sp->meshid);
|
|
}
|
|
|
|
void
|
|
ieee80211_mesh_update_beacon(struct ieee80211vap *vap,
|
|
struct ieee80211_beacon_offsets *bo)
|
|
{
|
|
KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap"));
|
|
|
|
if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) {
|
|
(void)ieee80211_add_meshconf(bo->bo_meshconf, vap);
|
|
clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF);
|
|
}
|
|
}
|
|
|
|
static int
|
|
mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
uint8_t tmpmeshid[IEEE80211_NWID_LEN];
|
|
struct ieee80211_mesh_route *rt;
|
|
struct ieee80211req_mesh_route *imr;
|
|
size_t len, off;
|
|
uint8_t *p;
|
|
int error;
|
|
|
|
if (vap->iv_opmode != IEEE80211_M_MBSS)
|
|
return ENOSYS;
|
|
|
|
error = 0;
|
|
switch (ireq->i_type) {
|
|
case IEEE80211_IOC_MESH_ID:
|
|
ireq->i_len = ms->ms_idlen;
|
|
memcpy(tmpmeshid, ms->ms_id, ireq->i_len);
|
|
error = copyout(tmpmeshid, ireq->i_data, ireq->i_len);
|
|
break;
|
|
case IEEE80211_IOC_MESH_AP:
|
|
ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0;
|
|
break;
|
|
case IEEE80211_IOC_MESH_FWRD:
|
|
ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0;
|
|
break;
|
|
case IEEE80211_IOC_MESH_TTL:
|
|
ireq->i_val = ms->ms_ttl;
|
|
break;
|
|
case IEEE80211_IOC_MESH_RTCMD:
|
|
switch (ireq->i_val) {
|
|
case IEEE80211_MESH_RTCMD_LIST:
|
|
len = 0;
|
|
MESH_RT_LOCK(ms);
|
|
TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
|
|
len += sizeof(*imr);
|
|
}
|
|
MESH_RT_UNLOCK(ms);
|
|
if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) {
|
|
ireq->i_len = len;
|
|
return ENOMEM;
|
|
}
|
|
ireq->i_len = len;
|
|
/* XXX M_WAIT? */
|
|
p = malloc(len, M_TEMP, M_NOWAIT | M_ZERO);
|
|
if (p == NULL)
|
|
return ENOMEM;
|
|
off = 0;
|
|
MESH_RT_LOCK(ms);
|
|
TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) {
|
|
if (off >= len)
|
|
break;
|
|
imr = (struct ieee80211req_mesh_route *)
|
|
(p + off);
|
|
imr->imr_flags = rt->rt_flags;
|
|
IEEE80211_ADDR_COPY(imr->imr_dest,
|
|
rt->rt_dest);
|
|
IEEE80211_ADDR_COPY(imr->imr_nexthop,
|
|
rt->rt_nexthop);
|
|
imr->imr_metric = rt->rt_metric;
|
|
imr->imr_nhops = rt->rt_nhops;
|
|
imr->imr_lifetime = rt->rt_lifetime;
|
|
imr->imr_lastmseq = rt->rt_lastmseq;
|
|
off += sizeof(*imr);
|
|
}
|
|
MESH_RT_UNLOCK(ms);
|
|
error = copyout(p, (uint8_t *)ireq->i_data,
|
|
ireq->i_len);
|
|
free(p, M_TEMP);
|
|
break;
|
|
case IEEE80211_MESH_RTCMD_FLUSH:
|
|
case IEEE80211_MESH_RTCMD_ADD:
|
|
case IEEE80211_MESH_RTCMD_DELETE:
|
|
return EINVAL;
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
break;
|
|
case IEEE80211_IOC_MESH_PR_METRIC:
|
|
len = strlen(ms->ms_pmetric->mpm_descr);
|
|
if (ireq->i_len < len)
|
|
return EINVAL;
|
|
ireq->i_len = len;
|
|
error = copyout(ms->ms_pmetric->mpm_descr,
|
|
(uint8_t *)ireq->i_data, len);
|
|
break;
|
|
case IEEE80211_IOC_MESH_PR_PATH:
|
|
len = strlen(ms->ms_ppath->mpp_descr);
|
|
if (ireq->i_len < len)
|
|
return EINVAL;
|
|
ireq->i_len = len;
|
|
error = copyout(ms->ms_ppath->mpp_descr,
|
|
(uint8_t *)ireq->i_data, len);
|
|
break;
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211);
|
|
|
|
static int
|
|
mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
uint8_t tmpmeshid[IEEE80211_NWID_LEN];
|
|
uint8_t tmpaddr[IEEE80211_ADDR_LEN];
|
|
char tmpproto[IEEE80211_MESH_PROTO_DSZ];
|
|
int error;
|
|
|
|
if (vap->iv_opmode != IEEE80211_M_MBSS)
|
|
return ENOSYS;
|
|
|
|
error = 0;
|
|
switch (ireq->i_type) {
|
|
case IEEE80211_IOC_MESH_ID:
|
|
if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN)
|
|
return EINVAL;
|
|
error = copyin(ireq->i_data, tmpmeshid, ireq->i_len);
|
|
if (error != 0)
|
|
break;
|
|
memset(ms->ms_id, 0, IEEE80211_NWID_LEN);
|
|
ms->ms_idlen = ireq->i_len;
|
|
memcpy(ms->ms_id, tmpmeshid, ireq->i_len);
|
|
error = ENETRESET;
|
|
break;
|
|
case IEEE80211_IOC_MESH_AP:
|
|
if (ireq->i_val)
|
|
ms->ms_flags |= IEEE80211_MESHFLAGS_AP;
|
|
else
|
|
ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP;
|
|
error = ENETRESET;
|
|
break;
|
|
case IEEE80211_IOC_MESH_FWRD:
|
|
if (ireq->i_val)
|
|
ms->ms_flags |= IEEE80211_MESHFLAGS_FWD;
|
|
else
|
|
ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD;
|
|
break;
|
|
case IEEE80211_IOC_MESH_TTL:
|
|
ms->ms_ttl = (uint8_t) ireq->i_val;
|
|
break;
|
|
case IEEE80211_IOC_MESH_RTCMD:
|
|
switch (ireq->i_val) {
|
|
case IEEE80211_MESH_RTCMD_LIST:
|
|
return EINVAL;
|
|
case IEEE80211_MESH_RTCMD_FLUSH:
|
|
ieee80211_mesh_rt_flush(vap);
|
|
break;
|
|
case IEEE80211_MESH_RTCMD_ADD:
|
|
if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ireq->i_data) ||
|
|
IEEE80211_ADDR_EQ(broadcastaddr, ireq->i_data))
|
|
return EINVAL;
|
|
error = copyin(ireq->i_data, &tmpaddr,
|
|
IEEE80211_ADDR_LEN);
|
|
if (error == 0)
|
|
ieee80211_mesh_discover(vap, tmpaddr, NULL);
|
|
break;
|
|
case IEEE80211_MESH_RTCMD_DELETE:
|
|
ieee80211_mesh_rt_del(vap, ireq->i_data);
|
|
break;
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
break;
|
|
case IEEE80211_IOC_MESH_PR_METRIC:
|
|
error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
|
|
if (error == 0) {
|
|
error = mesh_select_proto_metric(vap, tmpproto);
|
|
if (error == 0)
|
|
error = ENETRESET;
|
|
}
|
|
break;
|
|
case IEEE80211_IOC_MESH_PR_PATH:
|
|
error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto));
|
|
if (error == 0) {
|
|
error = mesh_select_proto_path(vap, tmpproto);
|
|
if (error == 0)
|
|
error = ENETRESET;
|
|
}
|
|
break;
|
|
default:
|
|
return ENOSYS;
|
|
}
|
|
return error;
|
|
}
|
|
IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211);
|