diff options
Diffstat (limited to 'sys/net80211/ieee80211_mesh.c')
| -rw-r--r-- | sys/net80211/ieee80211_mesh.c | 2538 |
1 files changed, 2538 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211_mesh.c b/sys/net80211/ieee80211_mesh.c new file mode 100644 index 0000000..6e7fa8d --- /dev/null +++ b/sys/net80211/ieee80211_mesh.c @@ -0,0 +1,2538 @@ +/*- + * Copyright (c) 2009 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Rui Paulo under sponsorship from the + * FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#include <sys/cdefs.h> +#ifdef __FreeBSD__ +__FBSDID("$FreeBSD$"); +#endif + +/* + * IEEE 802.11s Mesh Point (MBSS) support. + * + * Based on March 2009, D3.0 802.11s draft spec. + */ +#include "opt_inet.h" +#include "opt_wlan.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> + +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/endian.h> +#include <sys/errno.h> +#include <sys/proc.h> +#include <sys/sysctl.h> + +#include <net/if.h> +#include <net/if_media.h> +#include <net/if_llc.h> +#include <net/ethernet.h> + +#include <net80211/ieee80211_var.h> +#include <net80211/ieee80211_action.h> +#include <net80211/ieee80211_input.h> +#include <net80211/ieee80211_mesh.h> + +static int mesh_select_proto_path(struct ieee80211vap *, const char *); +static int mesh_select_proto_metric(struct ieee80211vap *, const char *); +static void mesh_vattach(struct ieee80211vap *); +static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); +static __inline void + mesh_linkchange(struct ieee80211_node *, + enum ieee80211_mesh_mlstate); +static void mesh_checkid(void *, struct ieee80211_node *); +static uint32_t mesh_generateid(struct ieee80211vap *); +static int mesh_checkpseq(struct ieee80211vap *, + const uint8_t [IEEE80211_ADDR_LEN], uint32_t); +static struct ieee80211_node * + mesh_find_txnode(struct ieee80211vap *, + const uint8_t [IEEE80211_ADDR_LEN]); +static void mesh_forward(struct ieee80211vap *, struct mbuf *, + const struct ieee80211_meshcntl *); +static int mesh_input(struct ieee80211_node *, struct mbuf *, int, int); +static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, + int, int); +static void mesh_peer_timeout_setup(struct ieee80211_node *); +static void mesh_peer_timeout_backoff(struct ieee80211_node *); +static void mesh_peer_timeout_cb(void *); +static __inline void + mesh_peer_timeout_stop(struct ieee80211_node *); +static int mesh_verify_meshpeerver(struct ieee80211vap *, const uint8_t *); +static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); +static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); +static int mesh_verify_meshpeer(struct ieee80211vap *, const uint8_t *); +uint32_t mesh_airtime_calc(struct ieee80211_node *); + +/* + * Timeout values come from the specification and are in milliseconds. + */ +SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD, 0, + "IEEE 802.11s parameters"); +static int ieee80211_mesh_retrytimeout = -1; +SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW, + &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", + "Retry timeout (msec)"); +static int ieee80211_mesh_holdingtimeout = -1; +SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW, + &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", + "Holding state timeout (msec)"); +static int ieee80211_mesh_confirmtimeout = -1; +SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW, + &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", + "Confirm state timeout (msec)"); +static int ieee80211_mesh_maxretries = 2; +SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLTYPE_INT | CTLFLAG_RW, + &ieee80211_mesh_maxretries, 0, + "Maximum retries during peer link establishment"); + +static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = + { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; + +static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; +static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; +static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; +static ieee80211_recv_action_func mesh_recv_action_meshlmetric_req; +static ieee80211_recv_action_func mesh_recv_action_meshlmetric_rep; + +static ieee80211_send_action_func mesh_send_action_meshpeering_open; +static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; +static ieee80211_send_action_func mesh_send_action_meshpeering_close; +static ieee80211_send_action_func mesh_send_action_meshlink_request; +static ieee80211_send_action_func mesh_send_action_meshlink_reply; + +static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { + .mpm_descr = "AIRTIME", + .mpm_ie = IEEE80211_MESHCONF_AIRTIME, + .mpm_metric = mesh_airtime_calc, +}; + +static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; +static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; + +#define MESH_RT_LOCK(ms) mtx_lock(&(ms)->ms_rt_lock) +#define MESH_RT_UNLOCK(ms) mtx_unlock(&(ms)->ms_rt_lock) + +MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh", "802.11s routing table"); + +/* + * Helper functions to manipulate the Mesh routing table. + */ +struct ieee80211_mesh_route * +ieee80211_mesh_rt_find(struct ieee80211vap *vap, + const uint8_t dest[IEEE80211_ADDR_LEN]) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + struct ieee80211_mesh_route *rt; + + MESH_RT_LOCK(ms); + TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { + if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) { + MESH_RT_UNLOCK(ms); + return rt; + } + } + MESH_RT_UNLOCK(ms); + return NULL; +} + +struct ieee80211_mesh_route * +ieee80211_mesh_rt_add(struct ieee80211vap *vap, + const uint8_t dest[IEEE80211_ADDR_LEN]) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + struct ieee80211_mesh_route *rt; + + KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, + ("%s: duplicate entry in the routing table", __func__)); + KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), + ("%s: adding self to the routing table", __func__)); + KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), + ("%s: adding broadcast to the routing table", __func__)); + + rt = malloc(sizeof(struct ieee80211_mesh_route), M_80211_MESH_RT, + M_NOWAIT | M_ZERO); + IEEE80211_ADDR_COPY(rt->rt_dest, dest); + rt->rt_priv = malloc(ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, + M_NOWAIT | M_ZERO); + MESH_RT_LOCK(ms); + TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); + MESH_RT_UNLOCK(ms); + return rt; +} + +void +ieee80211_mesh_rt_del(struct ieee80211vap *vap, + const uint8_t dest[IEEE80211_ADDR_LEN]) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + struct ieee80211_mesh_route *rt, *next; + + MESH_RT_LOCK(ms); + TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { + if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { + TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); + free(rt->rt_priv, M_80211_MESH_RT); + free(rt, M_80211_MESH_RT); + MESH_RT_UNLOCK(ms); + return; + } + } + MESH_RT_UNLOCK(ms); +} + +void +ieee80211_mesh_rt_flush(struct ieee80211vap *vap) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + struct ieee80211_mesh_route *rt, *next; + + if (ms == NULL) + return; + MESH_RT_LOCK(ms); + TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { + TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); + free(rt->rt_priv, M_80211_MESH_RT); + free(rt, M_80211_MESH_RT); + } + MESH_RT_UNLOCK(ms); +} + +#define N(a) (sizeof(a) / sizeof(a[0])) +int +ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) +{ + int i, firstempty = -1; + static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; + + for (i = 0; i < N(mesh_proto_paths); i++) { + if (memcmp(mpp->mpp_ie, mesh_proto_paths[i].mpp_ie, 4) == 0) + return EEXIST; + if (memcmp(mesh_proto_paths[i].mpp_ie, emptyie, 4) == 0 && + firstempty == -1) + firstempty = i; + } + if (firstempty < 0) + return ENOSPC; + memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); + return 0; +} + +int +ieee80211_mesh_register_proto_metric(const struct + ieee80211_mesh_proto_metric *mpm) +{ + int i, firstempty = -1; + static const uint8_t emptyie[4] = { 0, 0, 0, 0 }; + + for (i = 0; i < N(mesh_proto_metrics); i++) { + if (memcmp(mpm->mpm_ie, mesh_proto_metrics[i].mpm_ie, 4) == 0) + return EEXIST; + if (memcmp(mesh_proto_metrics[i].mpm_ie, emptyie, 4) == 0 && + firstempty == -1) + firstempty = i; + } + if (firstempty < 0) + return ENOSPC; + memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); + return 0; +} + +static int +mesh_select_proto_path(struct ieee80211vap *vap, const char *name) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + int i; + + for (i = 0; i < N(mesh_proto_paths); i++) { + if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { + ms->ms_ppath = &mesh_proto_paths[i]; + if (vap->iv_state == IEEE80211_S_RUN) + vap->iv_newstate(vap, IEEE80211_S_INIT, 0); + return 0; + } + } + return ENOENT; +} + +static int +mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) +{ + struct ieee80211_mesh_state *ms = vap->iv_mesh; + int i; + + for (i = 0; i < N(mesh_proto_metrics); i++) { + if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { + ms->ms_pmetric = &mesh_proto_metrics[i]; + if (vap->iv_state == IEEE80211_S_RUN) + vap->iv_newstate(vap, IEEE80211_S_INIT, 0); + return 0; + } + } + return ENOENT; +} +#undef N + +static void +ieee80211_mesh_init(void) +{ + + memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); + memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); + + /* + * Setup mesh parameters that depends on the clock frequency. + */ + ieee80211_mesh_retrytimeout = msecs_to_ticks(40); + ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); + ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); + + /* + * Register action frame handlers. + */ + ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, + IEEE80211_ACTION_MESHPEERING_OPEN, + mesh_recv_action_meshpeering_open); + ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, + IEEE80211_ACTION_MESHPEERING_CONFIRM, + mesh_recv_action_meshpeering_confirm); + ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHPEERING, + IEEE80211_ACTION_MESHPEERING_CLOSE, + mesh_recv_action_meshpeering_close); + ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, + IEEE80211_ACTION_MESHLMETRIC_REQ, mesh_recv_action_meshlmetric_req); + ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESHLMETRIC, + IEEE80211_ACTION_MESHLMETRIC_REP, mesh_recv_action_meshlmetric_rep); + + 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_stop(&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; + + 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); + 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 */ + /* Flush the routing table */ + if (nstate != IEEE80211_S_INIT && ostate == IEEE80211_S_INIT) + ieee80211_mesh_rt_flush(vap); + 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); + } + 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); + break; + default: + break; + } + + /* NB: ostate not nstate */ + ms->ms_ppath->mpp_newstate(vap, ostate, arg); + + return 0; +} + +/* + * 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++; + } 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--; + } + ni->ni_mlstate = state; + if (state == IEEE80211_NODE_MESH_HOLDING) + ms->ms_ppath->mpp_peerdown(ni); +} + +/* + * 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. + */ +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); + 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; + 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); + } + IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, ni, + "fwd %s frame from %s ttl %d", + IEEE80211_IS_MULTICAST(wh->i_addr1) ? "mcast" : "ucast", + ether_sprintf(wh->i_addr3), mccopy->mc_ttl); + + 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 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, 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 + * ieee80211_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); + hdrspace += sizeof(struct ieee80211_meshcntl) + + (mc->mc_flags & 3) * IEEE80211_ADDR_LEN; + 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) { + IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, + addr, "data", "duplicate mesh seqno %u ttl %u", + seq, mc->mc_ttl); + 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 || + !IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr)) { + 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 = ieee80211_decap(vap, m, hdrspace); + 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; + } else { +#ifdef IEEE80211_SUPPORT_SUPERG + m = ieee80211_decap_fastframe(vap, ni, m); + if (m == NULL) + return IEEE80211_FC0_TYPE_DATA; +#endif + } + 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) +{ + struct ieee80211vap *vap = ni->ni_vap; + const struct ieee80211_meshpeer_ie *mpie; + const uint8_t *meshid, *meshconf, *meshpeerver, *meshpeer; + + meshid = meshconf = meshpeerver = meshpeer = NULL; + while (efrm - frm > 1) { + IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); + switch (*frm) { + case IEEE80211_ELEMID_MESHPEERVER: + meshpeerver = frm; + break; + 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_subtype = mpie->peer_subtype; + mp->peer_llinkid = LE_READ_2(&mpie->peer_llinkid); + /* NB: peer link ID is optional on these frames */ + if (mpie->peer_subtype == + IEEE80211_MESH_PEER_LINK_CLOSE && + mpie->peer_len == 5) { + 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 && mp->peer_subtype != + IEEE80211_ACTION_MESHPEERING_CLOSE, ("parsing close action")); + + if (mesh_verify_meshpeerver(vap, meshpeerver) || + mesh_verify_meshid(vap, meshid) || + mesh_verify_meshpeer(vap, 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); + 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); + 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 */ + + sizeof(struct ieee80211_meshpeerver_ie) + + 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] mesh peer protocol version + * [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)); + frm = ieee80211_add_meshpeerver(frm, vap); + 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 */ + + sizeof(struct ieee80211_meshpeerver_ie) + + 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] mesh peer protocol version + * [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 */ + frm = ieee80211_add_meshpeerver(frm, vap); + 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 */ + + sizeof(struct ieee80211_meshpeerver_ie) + + 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 peer protocol version + * [tlv] mesh id + * [tlv] mesh peer link mgmt + */ + *frm++ = category; + *frm++ = action; + ADDSHORT(frm, args[2]); /* reason code */ + frm = ieee80211_add_meshpeerver(frm, vap); + 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_stop(&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 __inline int +mesh_verify_meshpeerver(struct ieee80211vap *vap, const uint8_t *ie) +{ + static const uint8_t peer[4] = IEEE80211_MESHPEERVER_PEER; + const struct ieee80211_meshpeerver_ie *meshpeerver = + (const struct ieee80211_meshpeerver_ie *) ie; + + if (meshpeerver->peerver_len != + sizeof(struct ieee80211_meshpeerver_ie) - 2) + return 1; + return memcmp(meshpeerver->peerver_proto, peer, 4); +} + +static __inline 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) +{ + static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; + const struct ieee80211_meshconf_ie *meshconf = + (const struct ieee80211_meshconf_ie *) ie; + const struct ieee80211_mesh_state *ms = vap->iv_mesh; + + if (meshconf == NULL) + return 1; + if (meshconf->conf_ver != IEEE80211_MESHCONF_VERSION) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "wrong mesh conf version: %d\n", meshconf->conf_ver); + return 1; + } + if (memcmp(meshconf->conf_pselid, ms->ms_ppath->mpp_ie, 4) != 0) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "unknown path selection algorithm: 0x%x%x%x%x\n", + meshconf->conf_pselid[0], meshconf->conf_pselid[1], + meshconf->conf_pselid[2], meshconf->conf_pselid[3]); + return 1; + } + if (memcmp(meshconf->conf_pmetid, ms->ms_pmetric->mpm_ie, 4) != 0) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "unknown path metric algorithm: 0x%x%x%x%x\n", + meshconf->conf_pmetid[0], meshconf->conf_pmetid[1], + meshconf->conf_pmetid[2], meshconf->conf_pmetid[3]); + return 1; + } + if (memcmp(meshconf->conf_ccid, null, 4) != 0) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "unknown congestion sig algorithm: 0x%x%x%x%x\n", + meshconf->conf_ccid[0], meshconf->conf_ccid[1], + meshconf->conf_ccid[2], meshconf->conf_ccid[3]); + return 1; + } + if (memcmp(meshconf->conf_syncid, null, 4) != 0) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "unknown sync algorithm: 0x%x%x%x%x\n", + meshconf->conf_syncid[0], meshconf->conf_syncid[1], + meshconf->conf_syncid[2], meshconf->conf_syncid[3]); + return 1; + } + if (memcmp(meshconf->conf_authid, null, 4) != 0) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, + "unknown auth auth algorithm: 0x%x%x%x%x\n", + meshconf->conf_pselid[0], meshconf->conf_pselid[1], + meshconf->conf_pselid[2], meshconf->conf_pselid[3]); + return 1; + } + /* Not accepting peers */ + if (!(meshconf->conf_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, const uint8_t *ie) +{ + const struct ieee80211_meshpeer_ie *meshpeer = + (const struct ieee80211_meshpeer_ie *) ie; + + if (meshpeer == NULL) + return 1; + switch (meshpeer->peer_subtype) { + case IEEE80211_MESH_PEER_LINK_OPEN: + if (meshpeer->peer_len != 3) + return 1; + break; + case IEEE80211_MESH_PEER_LINK_CONFIRM: + if (meshpeer->peer_len != 5) + return 1; + break; + case IEEE80211_MESH_PEER_LINK_CLOSE: + if (meshpeer->peer_len < 5) + return 1; + if (meshpeer->peer_len == 5 && 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; + static const uint8_t null[4] = IEEE80211_MESHCONF_NULL; + + KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); + + *frm++ = IEEE80211_ELEMID_MESHCONF; + *frm++ = sizeof(struct ieee80211_meshconf_ie) - 2; + *frm++ = IEEE80211_MESHCONF_VERSION; + memcpy(frm, ms->ms_ppath->mpp_ie, 4); /* path selection */ + frm += 4; + memcpy(frm, ms->ms_pmetric->mpm_ie, 4); /* link metric */ + frm += 4; + /* XXX null for now */ + memcpy(frm, null, 4); /* congestion control */ + frm += 4; + memcpy(frm, null, 4); /* sync */ + frm += 4; + memcpy(frm, null, 4); /* auth */ + frm += 4; + /* 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; + if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) + *frm |= IEEE80211_MESHCONF_CAP_AP; + if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) + *frm |= IEEE80211_MESHCONF_CAP_FWRD; + frm += 1; + return frm; +} + +/* + * Add a Mesh Peer Protocol IE to a frame. + * XXX: needs to grow support for Abbreviated Handshake + */ +uint8_t * +ieee80211_add_meshpeerver(uint8_t *frm, struct ieee80211vap *vap) +{ + static struct ieee80211_meshpeerver_ie ie = { + .peerver_ie = IEEE80211_ELEMID_MESHPEERVER, + .peerver_len = 4, + .peerver_proto = IEEE80211_MESHPEERVER_PEER, + }; + + KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); + + memcpy(frm, &ie, sizeof(ie)); + return frm + sizeof(ie); +} + +/* + * 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) +{ + KASSERT(localid != 0, ("localid == 0")); + + *frm++ = IEEE80211_ELEMID_MESHPEER; + switch (subtype) { + case IEEE80211_MESH_PEER_LINK_OPEN: + *frm++ = 3; /* length */ + *frm++ = subtype; + ADDSHORT(frm, localid); /* local ID */ + break; + case IEEE80211_MESH_PEER_LINK_CONFIRM: + KASSERT(peerid != 0, ("sending peer confirm without peer id")); + *frm++ = 5; /* length */ + *frm++ = subtype; + ADDSHORT(frm, localid); /* local ID */ + ADDSHORT(frm, peerid); /* peer ID */ + break; + case IEEE80211_MESH_PEER_LINK_CLOSE: + if (peerid) + *frm++ = 7; /* length */ + else + *frm++ = 5; /* length */ + *frm++ = subtype; + 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); +} + +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; + 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); + 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; + 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) + break; + memset(ms->ms_id, 0, IEEE80211_NWID_LEN); + ms->ms_idlen = ireq->i_len; + memcpy(ms->ms_id, tmpmeshid, ireq->i_len); + break; + case IEEE80211_IOC_MESH_AP: + if (ireq->i_val) + ms->ms_flags |= IEEE80211_MESHFLAGS_AP; + else + ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; + 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) + 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) + return mesh_select_proto_metric(vap, tmpproto); + break; + case IEEE80211_IOC_MESH_PR_PATH: + error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); + if (!error) + return mesh_select_proto_path(vap, tmpproto); + break; + default: + return ENOSYS; + } + return error; +} +IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); |
