mesh.c revision 43552be1da3c420931c89727b6115b7fa35368f8
12e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/* 2264d9b7d8a629620c8de84c614910c3164e935f8Rui Paulo * Copyright (c) 2008, 2009 open80211s Ltd. 32e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Authors: Luis Carlos Cobo <luisca@cozybit.com> 42e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Javier Cardona <javier@cozybit.com> 52e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 62e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * This program is free software; you can redistribute it and/or modify 72e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * it under the terms of the GNU General Public License version 2 as 82e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * published by the Free Software Foundation. 92e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 115a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 1251ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo#include <asm/unaligned.h> 132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo#include "ieee80211_i.h" 142e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo#include "mesh.h" 15b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh#include "driver-ops.h" 162e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 17bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergstatic int mesh_allocated; 182e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic struct kmem_cache *rm_cache; 192e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2025d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersenbool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt) 2125d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen{ 2225d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen return (mgmt->u.action.u.mesh_action.action_code == 2325d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen WLAN_MESH_ACTION_HWMP_PATH_SELECTION); 2425d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen} 2525d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen 262e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_init(void) 272e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_pathtbl_init(); 292e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_allocated = 1; 302e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry), 312e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 0, 0, NULL); 322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 332e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 342e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_stop(void) 352e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 36bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg if (!mesh_allocated) 37bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return; 382e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_pathtbl_unregister(); 392e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_destroy(rm_cache); 402e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 42472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_housekeeping_timer(unsigned long data) 43472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 44472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_sub_if_data *sdata = (void *) data; 45472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_local *local = sdata->local; 46472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 47472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 486b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags); 495bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 5064592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 51472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 52472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 532e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 542e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_matches_local - check if the config of a mesh point matches ours 552e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 56f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene * @sdata: local mesh subif 57f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen * @ie: information elements of a management frame from the mesh peer 582e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 592e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * This function checks if the mesh configuration of a mesh point matches the 602e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * local mesh configuration, i.e. if both nodes belong to the same mesh network. 612e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 62f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersenbool mesh_matches_local(struct ieee80211_sub_if_data *sdata, 63f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen struct ieee802_11_elems *ie) 642e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 65472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 66f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen u32 basic_rates = 0; 674bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg struct cfg80211_chan_def sta_chan_def; 682e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* 702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * As support for each feature is added, check for matching 712e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - On mesh config capabilities 722e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Power Save Support En 732e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support enabled 742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support active 752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support required from peer 762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - MDA enabled 772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Power management control on fc 782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 79739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen if (!(ifmsh->mesh_id_len == ie->mesh_id_len && 80739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 && 81739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) && 82739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) && 83739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) && 84739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) && 85739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))) 86bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return false; 87739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen 882103dec14792be2c2194a454630b01120d30e5cbSimon Wunderlich ieee80211_sta_get_rates(sdata, ie, ieee80211_get_sdata_band(sdata), 89f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen &basic_rates); 90f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen 91fe40cb6274988852aa5a84440d8f81c00cea4028Ashok Nagarajan if (sdata->vif.bss_conf.basic_rates != basic_rates) 92bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return false; 93fe40cb6274988852aa5a84440d8f81c00cea4028Ashok Nagarajan 944bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, 954bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ie->ht_operation, &sta_chan_def); 964bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg 974bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef, 984bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &sta_chan_def)) 99bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return false; 1002e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 101739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen return true; 1022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1042e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 1052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links 1062e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 1072e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @ie: information elements of a management frame from the mesh peer 1082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 109f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenebool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie) 1102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 111136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo return (ie->mesh_config->meshconf_cap & 112bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS) != 0; 1132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1142e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 1162c53040f018b6c36a46eec75b9b937aaa5f78e6dBen Hutchings * mesh_accept_plinks_update - update accepting_plink in local mesh beacons 1172e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 118d0709a65181beb787ef3f58cfe45536a2bb254c8Johannes Berg * @sdata: mesh interface in which mesh beacons are going to be updated 119df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch * 120df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch * Returns: beacon changed flag if the beacon content changed. 1212e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 122df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porschu32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata) 1232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 1242e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo bool free_plinks; 125df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch u32 changed = 0; 1262e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1272e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0, 1282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * the mesh interface might be able to establish plinks with peers that 129b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * are already on the table but are not on PLINK_ESTAB state. However, 130b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * in general the mesh interface is not accepting peer link requests 131b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * from new peers, and that must be reflected in the beacon 1322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 1332e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo free_plinks = mesh_plink_availables(sdata); 1342e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 135df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch if (free_plinks != sdata->u.mesh.accepting_plinks) { 136df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch sdata->u.mesh.accepting_plinks = free_plinks; 137df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch changed = BSS_CHANGED_BEACON; 138df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch } 139df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch 140df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch return changed; 1412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 14345b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen/* 14445b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * mesh_sta_cleanup - clean up any mesh sta state 14545b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * 14645b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * @sta: mesh sta to clean up. 14745b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen */ 14845b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersenvoid mesh_sta_cleanup(struct sta_info *sta) 14945b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen{ 15045b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen struct ieee80211_sub_if_data *sdata = sta->sdata; 15145b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen u32 changed; 15245b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen 15345b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen /* 15445b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * maybe userspace handles peer allocation and peering, but in either 15545b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * case the beacon is still generated by the kernel and we might need 15645b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen * an update. 15745b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen */ 15845b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen changed = mesh_accept_plinks_update(sdata); 159a6dad6a26e15f2f9269eea41b756c8cf0971b2bcThomas Pedersen if (!sdata->u.mesh.user_mpm) { 16045b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen changed |= mesh_plink_deactivate(sta); 16145b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen del_timer_sync(&sta->plink_timer); 16245b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen } 16345b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen 164f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen if (changed) 1652b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen ieee80211_mbss_info_change_notify(sdata, changed); 16645b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen} 16745b5028e86292284f4d5794047d5dfd742c22421Thomas Pedersen 168f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greeneint mesh_rmc_init(struct ieee80211_sub_if_data *sdata) 1692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 1702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int i; 1712e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 172472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL); 173472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!sdata->u.mesh.rmc) 1742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return -ENOMEM; 175472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1; 1762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo for (i = 0; i < RMC_BUCKETS; i++) 177b7cfcd113ac2a1e6b02afc7d283295729fc178a9Thomas Pedersen INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i]); 1782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 1792e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1802e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 181f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenevoid mesh_rmc_free(struct ieee80211_sub_if_data *sdata) 1822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 183472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct mesh_rmc *rmc = sdata->u.mesh.rmc; 1842e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct rmc_entry *p, *n; 1852e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int i; 1862e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 187472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!sdata->u.mesh.rmc) 1882e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return; 1892e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 190bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg for (i = 0; i < RMC_BUCKETS; i++) { 191b7cfcd113ac2a1e6b02afc7d283295729fc178a9Thomas Pedersen list_for_each_entry_safe(p, n, &rmc->bucket[i], list) { 1922e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_del(&p->list); 1932e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_free(rm_cache, p); 1942e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo } 195bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg } 1962e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1972e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kfree(rmc); 198472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc = NULL; 1992e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 2002e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2012e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 2022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_rmc_check - Check frame in recent multicast cache and add if absent. 2032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 204bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg * @sdata: interface 2052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @sa: source address 2062e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @mesh_hdr: mesh_header 2072e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 2082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Returns: 0 if the frame is not in the cache, nonzero otherwise. 2092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 2102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Checks using the source address and the mesh sequence number if we have 2112e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * received this frame lately. If the frame is not in the cache, it is added to 2122e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * it. 2132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 214bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_rmc_check(struct ieee80211_sub_if_data *sdata, 215bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg const u8 *sa, struct ieee80211s_hdr *mesh_hdr) 2162e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 217472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct mesh_rmc *rmc = sdata->u.mesh.rmc; 2182e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo u32 seqnum = 0; 2192e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int entries = 0; 2202e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo u8 idx; 2212e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct rmc_entry *p, *n; 2222e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* Don't care about endianness since only match matters */ 22451ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum)); 22551ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask; 226b7cfcd113ac2a1e6b02afc7d283295729fc178a9Thomas Pedersen list_for_each_entry_safe(p, n, &rmc->bucket[idx], list) { 2272e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo ++entries; 2282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo if (time_after(jiffies, p->exp_time) || 229bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg entries == RMC_QUEUE_MAX_LEN) { 2302e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_del(&p->list); 2312e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_free(rm_cache, p); 2322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo --entries; 233bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg } else if ((seqnum == p->seqnum) && ether_addr_equal(sa, p->sa)) 2342e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return -1; 2352e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo } 2362e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2372e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p = kmem_cache_alloc(rm_cache, GFP_ATOMIC); 238d15b84590a1d2ec021ada00a0e67ee5851a0ea2bJoe Perches if (!p) 2392e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 240d15b84590a1d2ec021ada00a0e67ee5851a0ea2bJoe Perches 2412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p->seqnum = seqnum; 2422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p->exp_time = jiffies + RMC_TIMEOUT; 2432e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo memcpy(p->sa, sa, ETH_ALEN); 244b7cfcd113ac2a1e6b02afc7d283295729fc178a9Thomas Pedersen list_add(&p->list, &rmc->bucket[idx]); 2452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 2462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 2472e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 248bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata, 249bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 250082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 251082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 252082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos, neighbors; 253082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie); 254082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 255082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 2 + meshconf_len) 256082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 257082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 258082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen pos = skb_put(skb, 2 + meshconf_len); 259082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = WLAN_EID_MESH_CONFIG; 260082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = meshconf_len; 261082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 26243552be1da3c420931c89727b6115b7fa35368f8Thomas Pedersen /* save a pointer for quick updates in pre-tbtt */ 26343552be1da3c420931c89727b6115b7fa35368f8Thomas Pedersen ifmsh->meshconf_offset = pos - skb->data; 26443552be1da3c420931c89727b6115b7fa35368f8Thomas Pedersen 265082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Active path selection protocol ID */ 266082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_pp_id; 267082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Active path selection metric ID */ 268082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_pm_id; 269082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Congestion control mode identifier */ 270082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_cc_id; 271082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Synchronization protocol identifier */ 272082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_sp_id; 273082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Authentication Protocol identifier */ 274082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_auth_id; 275082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Mesh Formation Info - number of neighbors */ 2761258d97616fdca9abc0c21f2edeb1d5b21dcb128Ashok Nagarajan neighbors = atomic_read(&ifmsh->estab_plinks); 277e05ecccdf752122a439b03c3190458d2c8f0bac6Jacob Minshall neighbors = min_t(int, neighbors, IEEE80211_MAX_MESH_PEERINGS); 278082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = neighbors << 1; 279082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Mesh capability */ 280b60e527a729cbb9c88b49cc10738a13328cd1ed2Chun-Yeow Yeoh *pos = 0x00; 281b60e527a729cbb9c88b49cc10738a13328cd1ed2Chun-Yeow Yeoh *pos |= ifmsh->mshcfg.dot11MeshForwarding ? 282b60e527a729cbb9c88b49cc10738a13328cd1ed2Chun-Yeow Yeoh IEEE80211_MESHCONF_CAPAB_FORWARDING : 0x00; 283dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona *pos |= ifmsh->accepting_plinks ? 284bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00; 2853f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch /* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */ 2863f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch *pos |= ifmsh->ps_peers_deep_sleep ? 287bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00; 288dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona *pos++ |= ifmsh->adjusting_tbtt ? 289bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00; 290082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = 0x00; 291082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 292082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 293082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 294082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 295bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) 296082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 297082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 298082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos; 299082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 300082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len) 301082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 302082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 303082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen pos = skb_put(skb, 2 + ifmsh->mesh_id_len); 304082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = WLAN_EID_MESH_ID; 305082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_id_len; 306082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (ifmsh->mesh_id_len) 307082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len); 308082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 309082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 310082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 311082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 312bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergstatic int mesh_add_awake_window_ie(struct ieee80211_sub_if_data *sdata, 313bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 3143f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch{ 3153f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3163f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch u8 *pos; 3173f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 3183f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch /* see IEEE802.11-2012 13.14.6 */ 3193f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch if (ifmsh->ps_peers_light_sleep == 0 && 3203f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch ifmsh->ps_peers_deep_sleep == 0 && 3213f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch ifmsh->nonpeer_pm == NL80211_MESH_POWER_ACTIVE) 3223f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch return 0; 3233f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 3243f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch if (skb_tailroom(skb) < 4) 3253f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch return -ENOMEM; 3263f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 3273f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch pos = skb_put(skb, 2 + 2); 3283f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch *pos++ = WLAN_EID_MESH_AWAKE_WINDOW; 3293f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch *pos++ = 2; 3303f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch put_unaligned_le16(ifmsh->mshcfg.dot11MeshAwakeWindowDuration, pos); 3313f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 3323f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch return 0; 3333f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch} 3343f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 335bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata, 336bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 337082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 338082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 339082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 offset, len; 340082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen const u8 *data; 341082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 342082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (!ifmsh->ie || !ifmsh->ie_len) 343082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 344082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 345082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* fast-forward to vendor IEs */ 346082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0); 347082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 348082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (offset) { 349082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen len = ifmsh->ie_len - offset; 350082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data = ifmsh->ie + offset; 351082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < len) 352082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 353082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(skb_put(skb, len), data, len); 354082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 355082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 356082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 357082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 358082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 359bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) 360082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 361082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 362082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 len = 0; 363082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen const u8 *data; 364082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 365082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (!ifmsh->ie || !ifmsh->ie_len) 366082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 367082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 368082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* find RSN IE */ 369082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data = ifmsh->ie; 370082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen while (data < ifmsh->ie + ifmsh->ie_len) { 371082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (*data == WLAN_EID_RSN) { 372082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen len = data[1] + 2; 373082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen break; 374082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 375082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data++; 376082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 377082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 378082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (len) { 379082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < len) 380082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 381082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(skb_put(skb, len), data, len); 382082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 383082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 384082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 385082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 386082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 387bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergstatic int mesh_add_ds_params_ie(struct ieee80211_sub_if_data *sdata, 388bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 389082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 39055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 39155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_channel *chan; 392082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos; 3932e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 394082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 3) 395082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 396082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 39755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 39855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 39955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON(!chanctx_conf)) { 40055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 40155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return -EINVAL; 40255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg } 4034bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg chan = chanctx_conf->def.chan; 40455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 40555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 406601513aa208f27ea87400a410d42c978421530ecEmanuel Taube pos = skb_put(skb, 2 + 1); 407601513aa208f27ea87400a410d42c978421530ecEmanuel Taube *pos++ = WLAN_EID_DS_PARAMS; 408601513aa208f27ea87400a410d42c978421530ecEmanuel Taube *pos++ = 1; 409601513aa208f27ea87400a410d42c978421530ecEmanuel Taube *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 410be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo 411082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 4122e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 4132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 414bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata, 415bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 416176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen{ 417176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_local *local = sdata->local; 41855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 419176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_supported_band *sband; 420176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen u8 *pos; 421176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 42255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg sband = local->hw.wiphy->bands[band]; 423176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (!sband->ht_cap.ht_supported || 4240418a445838749c51cf1e31a9c7ace6685ae87cdSimon Wunderlich sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT || 4250418a445838749c51cf1e31a9c7ace6685ae87cdSimon Wunderlich sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 || 4260418a445838749c51cf1e31a9c7ace6685ae87cdSimon Wunderlich sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10) 427176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 428176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 429176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 430176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return -ENOMEM; 431176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 432176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 433ef96a84202ccfb48a4569256ffba45e32308f7eeBen Greear ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap); 434176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 435176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 436176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen} 437176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 438bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata, 439bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct sk_buff *skb) 440176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen{ 441176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_local *local = sdata->local; 44255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 44355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_channel *channel; 444466f310d100ff54f346c1be481af9935c42467b3Johannes Berg enum nl80211_channel_type channel_type = 4454bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg cfg80211_get_chandef_type(&sdata->vif.bss_conf.chandef); 44655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_supported_band *sband; 44755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_sta_ht_cap *ht_cap; 448176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen u8 *pos; 449176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 45055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 45155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 45255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON(!chanctx_conf)) { 45355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 45455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return -EINVAL; 45555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg } 4564bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg channel = chanctx_conf->def.chan; 45755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 45855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 45955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg sband = local->hw.wiphy->bands[channel->band]; 46055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ht_cap = &sband->ht_cap; 46155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 462176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT) 463176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 464176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 465074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation)) 466176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return -ENOMEM; 467176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 468074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation)); 4694bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ieee80211_ie_build_ht_oper(pos, ht_cap, &sdata->vif.bss_conf.chandef, 470431e31542383b71bc5f2642572a1e6ef07f1bb87Ashok Nagarajan sdata->vif.bss_conf.ht_operation_mode); 471176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 472176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 473176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen} 474bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 4752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic void ieee80211_mesh_path_timer(unsigned long data) 4762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 4772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct ieee80211_sub_if_data *sdata = 4782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo (struct ieee80211_sub_if_data *) data; 4795bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 480690205f18fd069898c70d743f498ba42798e5c4eStanislaw Gruszka ieee80211_queue_work(&sdata->local->hw, &sdata->work); 4812e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 4822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 483e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_path_root_timer(unsigned long data) 484e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{ 485e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_sub_if_data *sdata = 486e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo (struct ieee80211_sub_if_data *) data; 487e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 488e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 489e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 490e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 491690205f18fd069898c70d743f498ba42798e5c4eStanislaw Gruszka ieee80211_queue_work(&sdata->local->hw, &sdata->work); 492e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo} 493e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 49463c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulovoid ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh) 49563c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo{ 496dbb912cd4ce64e763c5610b49a85529d2634e9d8Chun-Yeow Yeoh if (ifmsh->mshcfg.dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT) 49763c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 49863c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo else { 49963c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 50063c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo /* stop running timer */ 50163c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo del_timer_sync(&ifmsh->mesh_path_root_timer); 50263c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo } 50363c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo} 50463c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo 505902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg/** 5063c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame 507bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg * @hdr: 802.11 frame header 5083c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @fc: frame control field 5093c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshda: destination address in the mesh 5103c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshsa: source address address in the mesh. Same as TA, as frame is 5113c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * locally originated. 5123c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * 5133c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * Return the length of the 802.11 (does not include a mesh control header) 5143c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona */ 51515ff63653e507ec928a4a4386405a82446e096b1Johannes Bergint ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc, 51615ff63653e507ec928a4a4386405a82446e096b1Johannes Berg const u8 *meshda, const u8 *meshsa) 51715ff63653e507ec928a4a4386405a82446e096b1Johannes Berg{ 5183c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona if (is_multicast_ether_addr(meshda)) { 5193c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 5203c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona /* DA TA SA */ 5213c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr1, meshda, ETH_ALEN); 5223c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr2, meshsa, ETH_ALEN); 5233c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr3, meshsa, ETH_ALEN); 5243c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona return 24; 5253c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } else { 5262154c81c32fa44364f83218a10d8dbec4e76d4f5Javier Cardona *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); 5273c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona /* RA TA DA SA */ 5283c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */ 5293c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr2, meshsa, ETH_ALEN); 5303c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr3, meshda, ETH_ALEN); 5313c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr4, meshsa, ETH_ALEN); 5323c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona return 30; 5333c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } 5343c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona} 5353c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona 5363c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona/** 537902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * ieee80211_new_mesh_header - create a new mesh header 538902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * @sdata: mesh interface to be used 539bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg * @meshhdr: uninitialized mesh header 54061ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr4or5: 1st address in the ae header, which may correspond to address 4 54161ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * (if addr6 is NULL) or address 5 (if addr6 is present). It may 54261ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * be NULL. 54361ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr6: 2nd address in the ae header, which corresponds to addr6 of the 54461ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * mesh frame 545902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * 546902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * Return the header length. 547902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg */ 548bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergint ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata, 549bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct ieee80211s_hdr *meshhdr, 550bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg const char *addr4or5, const char *addr6) 551902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{ 552bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg if (WARN_ON(!addr4or5 && addr6)) 553bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return 0; 554bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 5550c3cee72a403e3b4992a5478c9c33d668c246c22Julia Lawall memset(meshhdr, 0, sizeof(*meshhdr)); 556bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 557472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL; 558bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 559bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg /* FIXME: racy -- TX on multiple queues can be concurrent */ 560472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum); 561472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.mesh_seqnum++; 562bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 56361ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona if (addr4or5 && !addr6) { 5643c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona meshhdr->flags |= MESH_FLAGS_AE_A4; 56561ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN); 566bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return 2 * ETH_ALEN; 56761ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona } else if (addr4or5 && addr6) { 5683c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona meshhdr->flags |= MESH_FLAGS_AE_A5_A6; 56961ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN); 57061ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr2, addr6, ETH_ALEN); 571bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return 3 * ETH_ALEN; 5723c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } 573bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg 574bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg return ETH_ALEN; 575902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg} 576902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg 577bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Bergstatic void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata) 578472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 579bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 580df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch u32 changed; 581472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 58266de671374f003467b5ef7c65ecbe1930480c8c9Colleen Twitty ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ); 583472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mesh_path_expire(sdata); 584472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 585df32381896f5f0c78a371df2e49ab7c776b1a5baMarco Porsch changed = mesh_accept_plinks_update(sdata); 5862b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen ieee80211_mbss_info_change_notify(sdata, changed); 587472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 588472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mod_timer(&ifmsh->housekeeping_timer, 589bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg round_jiffies(jiffies + 590bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg IEEE80211_MESH_HOUSEKEEPING_INTERVAL)); 591472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 592472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 593e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata) 594e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{ 595e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 596a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh u32 interval; 597e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 598e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo mesh_path_tx_root_frame(sdata); 599a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh 600a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh if (ifmsh->mshcfg.dot11MeshHWMPRootMode == IEEE80211_PROACTIVE_RANN) 601a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval; 602a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh else 603a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh interval = ifmsh->mshcfg.dot11MeshHWMProotInterval; 604a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh 605e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo mod_timer(&ifmsh->mesh_path_root_timer, 606a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647bChun-Yeow Yeoh round_jiffies(TU_TO_EXP_TIME(interval))); 607e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo} 608e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 6092b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenstatic int 6102b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) 6112b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen{ 6122b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct beacon_data *bcn; 6132b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen int head_len, tail_len; 6142b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct sk_buff *skb; 6152b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct ieee80211_mgmt *mgmt; 6162b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct ieee80211_chanctx_conf *chanctx_conf; 617b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct mesh_csa_settings *csa; 6182b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen enum ieee80211_band band; 6192b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen u8 *pos; 6202b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct ieee80211_sub_if_data *sdata; 6212b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen int hdr_len = offsetof(struct ieee80211_mgmt, u.beacon) + 6222b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen sizeof(mgmt->u.beacon); 6232b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6242b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh); 6252b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen rcu_read_lock(); 6262b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 6272b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen band = chanctx_conf->def.chan->band; 6282b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen rcu_read_unlock(); 6292b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6302b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen head_len = hdr_len + 6312b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + /* NULL SSID */ 632b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh /* Channel Switch Announcement */ 633b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 2 + sizeof(struct ieee80211_channel_sw_ie) + 634b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh /* Mesh Channel Swith Parameters */ 635b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 2 + sizeof(struct ieee80211_mesh_chansw_params_ie) + 6362b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + 8 + /* supported rates */ 6372b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + 3; /* DS params */ 6382b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen tail_len = 2 + (IEEE80211_MAX_SUPP_RATES - 8) + 6392b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + sizeof(struct ieee80211_ht_cap) + 6402b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + sizeof(struct ieee80211_ht_operation) + 6412b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + ifmsh->mesh_id_len + 6422b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + sizeof(struct ieee80211_meshconf_ie) + 6432b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 2 + sizeof(__le16) + /* awake window */ 6442b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen ifmsh->ie_len; 6452b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6462b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn = kzalloc(sizeof(*bcn) + head_len + tail_len, GFP_KERNEL); 6472b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen /* need an skb for IE builders to operate on */ 6482b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen skb = dev_alloc_skb(max(head_len, tail_len)); 6492b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6502b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (!bcn || !skb) 6512b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen goto out_free; 6522b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6532b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen /* 6542b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen * pointers go into the block we allocated, 6552b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen * memory is | beacon_data | head | tail | 6562b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen */ 6572b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn->head = ((u8 *) bcn) + sizeof(*bcn); 6582b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6592b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen /* fill in the head */ 6602b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); 6612b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen memset(mgmt, 0, hdr_len); 6622b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 6632b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen IEEE80211_STYPE_BEACON); 6642b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen eth_broadcast_addr(mgmt->da); 6652b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 6662b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 6672b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen ieee80211_mps_set_frame_flags(sdata, NULL, (void *) mgmt); 6682b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen mgmt->u.beacon.beacon_int = 6692b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen cpu_to_le16(sdata->vif.bss_conf.beacon_int); 6702b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen mgmt->u.beacon.capab_info |= cpu_to_le16( 6712b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen sdata->u.mesh.security ? WLAN_CAPABILITY_PRIVACY : 0); 6722b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 6732b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen pos = skb_put(skb, 2); 6742b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen *pos++ = WLAN_EID_SSID; 6752b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen *pos++ = 0x0; 6762b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 677b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh rcu_read_lock(); 678b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh csa = rcu_dereference(ifmsh->csa); 679b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (csa) { 680b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh pos = skb_put(skb, 13); 681b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh memset(pos, 0, 13); 682b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = WLAN_EID_CHANNEL_SWITCH; 683b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = 3; 684b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = 0x0; 685b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = ieee80211_frequency_to_channel( 686b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh csa->settings.chandef.chan->center_freq); 687b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh sdata->csa_counter_offset_beacon = hdr_len + 6; 688b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = csa->settings.count; 689b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; 690b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = 6; 691b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (ifmsh->chsw_init) { 692b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = ifmsh->mshcfg.dot11MeshTTL; 693b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 694b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh } else { 695b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ = ifmsh->chsw_ttl; 696b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh } 697b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh *pos++ |= csa->settings.block_tx ? 698b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 699b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); 700b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh pos += 2; 701ca91dc97b8a0ffd05721806654eaff2cf13ba5cbChun-Yeow Yeoh put_unaligned_le16(ifmsh->pre_value, pos); 702b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh pos += 2; 703b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh } 704b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh rcu_read_unlock(); 705b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 7062b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (ieee80211_add_srates_ie(sdata, skb, true, band) || 707bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_ds_params_ie(sdata, skb)) 7082b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen goto out_free; 7092b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7102b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn->head_len = skb->len; 7112b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen memcpy(bcn->head, skb->data, bcn->head_len); 7122b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7132b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen /* now the tail */ 7142b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen skb_trim(skb, 0); 7152b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn->tail = bcn->head + bcn->head_len; 7162b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7172b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (ieee80211_add_ext_srates_ie(sdata, skb, true, band) || 718bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_rsn_ie(sdata, skb) || 719bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_ht_cap_ie(sdata, skb) || 720bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_ht_oper_ie(sdata, skb) || 721bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_meshid_ie(sdata, skb) || 722bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_meshconf_ie(sdata, skb) || 723bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_awake_window_ie(sdata, skb) || 724bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg mesh_add_vendor_ies(sdata, skb)) 7252b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen goto out_free; 7262b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7272b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn->tail_len = skb->len; 7282b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen memcpy(bcn->tail, skb->data, bcn->tail_len); 72943552be1da3c420931c89727b6115b7fa35368f8Thomas Pedersen bcn->meshconf = (struct ieee80211_meshconf_ie *) 73043552be1da3c420931c89727b6115b7fa35368f8Thomas Pedersen (bcn->tail + ifmsh->meshconf_offset); 7312b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7322b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen dev_kfree_skb(skb); 7332b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen rcu_assign_pointer(ifmsh->beacon, bcn); 7342b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen return 0; 7352b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenout_free: 7362b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen kfree(bcn); 7372b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen dev_kfree_skb(skb); 7382b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen return -ENOMEM; 7392b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen} 7402b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7412b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenstatic int 7428d61ffa5e01c5f676431d12caba17db164a48a86Johannes Bergieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata) 7432b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen{ 7442b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct beacon_data *old_bcn; 7452b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen int ret; 7462b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7478d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg old_bcn = rcu_dereference_protected(sdata->u.mesh.beacon, 7488d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 7498d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg ret = ieee80211_mesh_build_beacon(&sdata->u.mesh); 7502b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (ret) 7512b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen /* just reuse old beacon */ 7528d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg return ret; 7532b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7542b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (old_bcn) 7552b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen kfree_rcu(old_bcn, rcu_head); 7568d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg return 0; 7572b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen} 7582b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7592b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenvoid ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata, 7602b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen u32 changed) 7612b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen{ 762f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 763f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen unsigned long bits = changed; 764f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen u32 bit; 765f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 766f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen if (!bits) 767f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen return; 768f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 769f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen /* if we race with running work, worst case this work becomes a noop */ 770f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen for_each_set_bit(bit, &bits, sizeof(changed) * BITS_PER_BYTE) 771f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen set_bit(bit, &ifmsh->mbss_changed); 772f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen set_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags); 773f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen ieee80211_queue_work(&sdata->local->hw, &sdata->work); 7742b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen} 7752b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 7762b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersenint ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) 777472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 778472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 779472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_local *local = sdata->local; 780f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh u32 changed = BSS_CHANGED_BEACON | 781f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh BSS_CHANGED_BEACON_ENABLED | 782f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh BSS_CHANGED_HT | 783f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh BSS_CHANGED_BASIC_RATES | 784f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh BSS_CHANGED_BEACON_INT; 785472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 78609b174702601079c3a04806754be30ffbd70db4dJohannes Berg local->fif_other_bss++; 78709b174702601079c3a04806754be30ffbd70db4dJohannes Berg /* mesh ifaces must set allmulti to forward mcast traffic */ 78809b174702601079c3a04806754be30ffbd70db4dJohannes Berg atomic_inc(&local->iff_allmultis); 78909b174702601079c3a04806754be30ffbd70db4dJohannes Berg ieee80211_configure_filter(local); 79009b174702601079c3a04806754be30ffbd70db4dJohannes Berg 791c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona ifmsh->mesh_cc_id = 0; /* Disabled */ 792dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona /* register sync ops from extensible synchronization framework */ 793dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id); 794dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona ifmsh->adjusting_tbtt = false; 795dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona ifmsh->sync_offset_clockdrift_max = 0; 7966b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags); 79763c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo ieee80211_mesh_root_setup(ifmsh); 79864592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 79970c33eaae79e53f9e48324736c0cb85534d3f093Ashok Nagarajan sdata->vif.bss_conf.ht_operation_mode = 80070c33eaae79e53f9e48324736c0cb85534d3f093Ashok Nagarajan ifmsh->mshcfg.ht_opmode; 801d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = true; 802f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh 80339886b618aba3c39e650c191d601e26ec581ce0fThomas Pedersen changed |= ieee80211_mps_local_status_update(sdata); 8043f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 8052b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen if (ieee80211_mesh_build_beacon(ifmsh)) { 8062b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen ieee80211_stop_mesh(sdata); 8072b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen return -ENOMEM; 8082b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen } 8092b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen 810f4eabc918c3b88763bc20dd9e2b248aa6c757005Chun-Yeow Yeoh ieee80211_bss_info_change_notify(sdata, changed); 811c405c6298eacd423098afacf6020ddbda1b0378bJohannes Berg 812c405c6298eacd423098afacf6020ddbda1b0378bJohannes Berg netif_carrier_on(sdata->dev); 8132b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen return 0; 814472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 815472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 816472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata) 817472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 81809b174702601079c3a04806754be30ffbd70db4dJohannes Berg struct ieee80211_local *local = sdata->local; 81929cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 8202b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen struct beacon_data *bcn; 82129cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg 822c405c6298eacd423098afacf6020ddbda1b0378bJohannes Berg netif_carrier_off(sdata->dev); 823c405c6298eacd423098afacf6020ddbda1b0378bJohannes Berg 8240d466b9c6798d431141ab15ae6d5ea413b4d09b2Thomas Pedersen /* stop the beacon */ 82529cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg ifmsh->mesh_id_len = 0; 826d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = false; 827d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 82829cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 8292b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen bcn = rcu_dereference_protected(ifmsh->beacon, 8308d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 8312b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen rcu_assign_pointer(ifmsh->beacon, NULL); 8322b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen kfree_rcu(bcn, rcu_head); 8330d466b9c6798d431141ab15ae6d5ea413b4d09b2Thomas Pedersen 8340d466b9c6798d431141ab15ae6d5ea413b4d09b2Thomas Pedersen /* flush STAs and mpaths on this iface */ 835b998e8bb3e1c6eeae5eab9d6a434563270286c3bJohannes Berg sta_info_flush(sdata); 8360d466b9c6798d431141ab15ae6d5ea413b4d09b2Thomas Pedersen mesh_path_flush_by_iface(sdata); 83709b174702601079c3a04806754be30ffbd70db4dJohannes Berg 8383f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch /* free all potentially still buffered group-addressed frames */ 8393f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch local->total_ps_buffered -= skb_queue_len(&ifmsh->ps.bc_buf); 8403f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch skb_queue_purge(&ifmsh->ps.bc_buf); 8413f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch 842472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg del_timer_sync(&sdata->u.mesh.housekeeping_timer); 843e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo del_timer_sync(&sdata->u.mesh.mesh_path_root_timer); 844dd4c9260e7f23f2e951cbfb2726e468c6d30306cJohannes Berg del_timer_sync(&sdata->u.mesh.mesh_path_timer); 84509b174702601079c3a04806754be30ffbd70db4dJohannes Berg 846f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen /* clear any mesh work (for next join) we may have accrued */ 847f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen ifmsh->wrkq_flags = 0; 848f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen ifmsh->mbss_changed = 0; 849f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 85009b174702601079c3a04806754be30ffbd70db4dJohannes Berg local->fif_other_bss--; 85109b174702601079c3a04806754be30ffbd70db4dJohannes Berg atomic_dec(&local->iff_allmultis); 85209b174702601079c3a04806754be30ffbd70db4dJohannes Berg ieee80211_configure_filter(local); 853472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 854472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 85533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeohstatic bool 85633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeohieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata, 85733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct ieee802_11_elems *elems, bool beacon) 85833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh{ 85933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct cfg80211_csa_settings params; 86033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct ieee80211_csa_ie csa_ie; 86133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct ieee80211_chanctx_conf *chanctx_conf; 86233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct ieee80211_chanctx *chanctx; 86333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 86433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 86533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh int err, num_chanctx; 86633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh u32 sta_flags; 86733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 86833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (sdata->vif.csa_active) 86933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return true; 87033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 87133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (!ifmsh->mesh_id) 87233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 87333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 87433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sta_flags = IEEE80211_STA_DISABLE_VHT; 87533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh switch (sdata->vif.bss_conf.chandef.width) { 87633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh case NL80211_CHAN_WIDTH_20_NOHT: 87733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sta_flags |= IEEE80211_STA_DISABLE_HT; 87833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh case NL80211_CHAN_WIDTH_20: 87933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sta_flags |= IEEE80211_STA_DISABLE_40MHZ; 88033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh break; 88133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh default: 88233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh break; 88333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh } 88433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 88533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh memset(¶ms, 0, sizeof(params)); 88633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh memset(&csa_ie, 0, sizeof(csa_ie)); 88733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, band, 88833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sta_flags, sdata->vif.addr, 88933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh &csa_ie); 89033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (err < 0) 89133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 89233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (err) 89333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 89433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 89533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef = csa_ie.chandef; 89633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.count = csa_ie.count; 89733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 89833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (sdata->vif.bss_conf.chandef.chan->band != 89933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.chan->band) 90033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 90133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 90233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, ¶ms.chandef, 90333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh IEEE80211_CHAN_DISABLED)) { 90433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sdata_info(sdata, 90533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh "mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n", 90633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sdata->vif.addr, 90733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.chan->center_freq, 90833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.width, 90933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.center_freq1, 91033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.center_freq2); 91133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 91233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh } 91333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 91433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy, 91533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh ¶ms.chandef); 91633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (err < 0) 91733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 91833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (err) { 91933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.radar_required = true; 92033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh /* TODO: DFS not (yet) supported */ 92133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 92233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh } 92333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 92433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh rcu_read_lock(); 92533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 92633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (!chanctx_conf) 92733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh goto failed_chswitch; 92833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 92933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh /* don't handle for multi-VIF cases */ 93033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 93133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (chanctx->refcount > 1) 93233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh goto failed_chswitch; 93333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 93433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh num_chanctx = 0; 93533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list) 93633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh num_chanctx++; 93733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 93833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (num_chanctx > 1) 93933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh goto failed_chswitch; 94033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 94133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh rcu_read_unlock(); 94233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 94333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh mcsa_dbg(sdata, 94433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh "received channel switch announcement to go to channel %d MHz\n", 94533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.chandef.chan->center_freq); 94633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 94733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh params.block_tx = csa_ie.mode & WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT; 9483f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh if (beacon) { 94933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh ifmsh->chsw_ttl = csa_ie.ttl - 1; 9503f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh if (ifmsh->pre_value >= csa_ie.pre_value) 9513f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh return false; 9523f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh ifmsh->pre_value = csa_ie.pre_value; 9533f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh } 95433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 9553f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh if (ifmsh->chsw_ttl < ifmsh->mshcfg.dot11MeshTTL) { 95633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (ieee80211_mesh_csa_beacon(sdata, ¶ms, false) < 0) 95733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 9583f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh } else { 9593f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh return false; 9603f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh } 96133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 96233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sdata->csa_radar_required = params.radar_required; 96333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 96433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (params.block_tx) 96533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh ieee80211_stop_queues_by_reason(&sdata->local->hw, 96633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh IEEE80211_MAX_QUEUE_MAP, 96733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh IEEE80211_QUEUE_STOP_REASON_CSA); 96833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 96933787fc4bea0347d78a211d1f38289b73d9ec1a6Luciano Coelho sdata->csa_chandef = params.chandef; 97033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh sdata->vif.csa_active = true; 97133a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 97233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh ieee80211_bss_info_change_notify(sdata, err); 97333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh drv_channel_switch_beacon(sdata, ¶ms.chandef); 97433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 97533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return true; 97633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeohfailed_chswitch: 97733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh rcu_read_unlock(); 97833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return false; 97933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh} 98033a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 9819fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersenstatic void 9829fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersenieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data *sdata, 9839fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct ieee80211_mgmt *mgmt, size_t len) 9849fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen{ 9859fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct ieee80211_local *local = sdata->local; 9869fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 9879fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct sk_buff *presp; 9889fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct beacon_data *bcn; 9899fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct ieee80211_mgmt *hdr; 9909fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen struct ieee802_11_elems elems; 9919fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen size_t baselen; 992511044ea0bfc06614d903263ad094d1071fa172fJohannes Berg u8 *pos; 9939fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 9949fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen pos = mgmt->u.probe_req.variable; 9959fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen baselen = (u8 *) pos - (u8 *) mgmt; 9969fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen if (baselen > len) 9979fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen return; 9989fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 999b2e506bfc4d752b68a0ccaae1e977898263eba4cJohannes Berg ieee802_11_parse_elems(pos, len - baselen, false, &elems); 10009fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 1001a4ef66a915b957416a89a48365aea2ec2dc551f6Chun-Yeow Yeoh if (!elems.mesh_id) 1002a4ef66a915b957416a89a48365aea2ec2dc551f6Chun-Yeow Yeoh return; 1003a4ef66a915b957416a89a48365aea2ec2dc551f6Chun-Yeow Yeoh 10049fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen /* 802.11-2012 10.1.4.3.2 */ 10059fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen if ((!ether_addr_equal(mgmt->da, sdata->vif.addr) && 10069fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen !is_broadcast_ether_addr(mgmt->da)) || 10079fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen elems.ssid_len != 0) 10089fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen return; 10099fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 10109fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen if (elems.mesh_id_len != 0 && 10119fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen (elems.mesh_id_len != ifmsh->mesh_id_len || 10129fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen memcmp(elems.mesh_id, ifmsh->mesh_id, ifmsh->mesh_id_len))) 10139fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen return; 10149fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 10159fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen rcu_read_lock(); 10169fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen bcn = rcu_dereference(ifmsh->beacon); 10179fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 10189fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen if (!bcn) 10199fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen goto out; 10209fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 10219fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen presp = dev_alloc_skb(local->tx_headroom + 10229fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen bcn->head_len + bcn->tail_len); 10239fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen if (!presp) 10249fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen goto out; 10259fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 10269fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen skb_reserve(presp, local->tx_headroom); 10279fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen memcpy(skb_put(presp, bcn->head_len), bcn->head, bcn->head_len); 10289fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen memcpy(skb_put(presp, bcn->tail_len), bcn->tail, bcn->tail_len); 10299fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen hdr = (struct ieee80211_mgmt *) presp->data; 10309fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 10319fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen IEEE80211_STYPE_PROBE_RESP); 10329fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen memcpy(hdr->da, mgmt->sa, ETH_ALEN); 10339fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen IEEE80211_SKB_CB(presp)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 10349fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen ieee80211_tx_skb(sdata, presp); 10359fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersenout: 10369fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen rcu_read_unlock(); 10379fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen} 10389fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen 1039472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata, 1040472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg u16 stype, 1041472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt, 1042472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t len, 1043472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status) 1044472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 1045c6a1fa12d206882757264869f8e32d606b930e2aJohannes Berg struct ieee80211_local *local = sdata->local; 1046dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1047472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee802_11_elems elems; 1048472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_channel *channel; 1049472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t baselen; 1050472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg int freq; 1051472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg enum ieee80211_band band = rx_status->band; 1052472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1053472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg /* ignore ProbeResp to foreign address */ 1054472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (stype == IEEE80211_STYPE_PROBE_RESP && 1055b203ca39126bad99583c908be587df067820a1eaJoe Perches !ether_addr_equal(mgmt->da, sdata->vif.addr)) 1056472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 1057472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1058472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 1059472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (baselen > len) 1060472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 1061472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1062472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 1063b2e506bfc4d752b68a0ccaae1e977898263eba4cJohannes Berg false, &elems); 1064472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 10659a90bc81914ee77edcd6eb7e881639b7f7bf1667Thomas Pedersen /* ignore non-mesh or secure / unsecure mismatch */ 10669a90bc81914ee77edcd6eb7e881639b7f7bf1667Thomas Pedersen if ((!elems.mesh_id || !elems.mesh_config) || 10679a90bc81914ee77edcd6eb7e881639b7f7bf1667Thomas Pedersen (elems.rsn && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) || 10689a90bc81914ee77edcd6eb7e881639b7f7bf1667Thomas Pedersen (!elems.rsn && sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)) 10695cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona return; 10705cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona 10711cd8e88e17729f57a9c7f751103e522596bb5de2Johannes Berg if (elems.ds_params) 107259eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems.ds_params[0], band); 1073472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg else 1074472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg freq = rx_status->freq; 1075472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1076472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 1077472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1078472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 1079472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 1080472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 10819a90bc81914ee77edcd6eb7e881639b7f7bf1667Thomas Pedersen if (mesh_matches_local(sdata, &elems)) 1082f743ff4907fa5bc2b460f48ace831a560806a9fbThomas Pedersen mesh_neighbour_update(sdata, mgmt->sa, &elems); 1083dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona 1084dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona if (ifmsh->sync_ops) 1085dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona ifmsh->sync_ops->rx_bcn_presp(sdata, 1086dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona stype, mgmt, &elems, rx_status); 108733a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 108833a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (!ifmsh->chsw_init) 108933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh ieee80211_mesh_process_chnswitch(sdata, &elems, true); 1090472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1091472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1092b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeohint ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata) 1093b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh{ 1094b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1095b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct mesh_csa_settings *tmp_csa_settings; 1096b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh int ret = 0; 1097b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1098b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh /* Reset the TTL value and Initiator flag */ 1099b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ifmsh->chsw_init = false; 1100b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ifmsh->chsw_ttl = 0; 1101b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1102b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh /* Remove the CSA and MCSP elements from the beacon */ 1103b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh tmp_csa_settings = rcu_dereference(ifmsh->csa); 1104b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh rcu_assign_pointer(ifmsh->csa, NULL); 1105b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh kfree_rcu(tmp_csa_settings, rcu_head); 1106b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ret = ieee80211_mesh_rebuild_beacon(sdata); 1107b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (ret) 1108b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh return -EINVAL; 1109b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1110b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1111b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1112b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh mcsa_dbg(sdata, "complete switching to center freq %d MHz", 1113b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh sdata->vif.bss_conf.chandef.chan->center_freq); 1114b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh return 0; 1115b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh} 1116b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1117b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeohint ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1118b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct cfg80211_csa_settings *csa_settings, 1119b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh bool csa_action) 1120b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh{ 1121b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1122b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh struct mesh_csa_settings *tmp_csa_settings; 1123b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh int ret = 0; 1124b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1125b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh tmp_csa_settings = kmalloc(sizeof(*tmp_csa_settings), 1126b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh GFP_ATOMIC); 1127b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (!tmp_csa_settings) 1128b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh return -ENOMEM; 1129b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1130b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh memcpy(&tmp_csa_settings->settings, csa_settings, 1131b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh sizeof(struct cfg80211_csa_settings)); 1132b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1133b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh rcu_assign_pointer(ifmsh->csa, tmp_csa_settings); 1134b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1135b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ret = ieee80211_mesh_rebuild_beacon(sdata); 1136b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (ret) { 1137b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh tmp_csa_settings = rcu_dereference(ifmsh->csa); 1138b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh rcu_assign_pointer(ifmsh->csa, NULL); 1139b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh kfree_rcu(tmp_csa_settings, rcu_head); 1140b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh return ret; 1141b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh } 1142b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1143b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1144b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1145b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh if (csa_action) 1146b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh ieee80211_send_action_csa(sdata, csa_settings); 1147b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 1148b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh return 0; 1149b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh} 1150b8456a14e9d2770846fcf74de18ff95b676149a3Chun-Yeow Yeoh 11518f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeohstatic int mesh_fwd_csa_frame(struct ieee80211_sub_if_data *sdata, 11528f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee80211_mgmt *mgmt, size_t len) 11538f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh{ 11548f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee80211_mgmt *mgmt_fwd; 11558f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct sk_buff *skb; 11568f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee80211_local *local = sdata->local; 11578f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh u8 *pos = mgmt->u.action.u.chan_switch.variable; 11588f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh size_t offset_ttl; 11598f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11608f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh skb = dev_alloc_skb(local->tx_headroom + len); 11618f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh if (!skb) 11628f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh return -ENOMEM; 11638f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh skb_reserve(skb, local->tx_headroom); 11648f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh mgmt_fwd = (struct ieee80211_mgmt *) skb_put(skb, len); 11658f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11668f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh /* offset_ttl is based on whether the secondary channel 11678f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh * offset is available or not. Substract 1 from the mesh TTL 11688f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh * and disable the initiator flag before forwarding. 11698f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh */ 11708f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh offset_ttl = (len < 42) ? 7 : 10; 11718f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh *(pos + offset_ttl) -= 1; 11728f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh *(pos + offset_ttl + 1) &= ~WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 11738f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11748f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh memcpy(mgmt_fwd, mgmt, len); 11758f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh eth_broadcast_addr(mgmt_fwd->da); 11768f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh memcpy(mgmt_fwd->sa, sdata->vif.addr, ETH_ALEN); 11778f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh memcpy(mgmt_fwd->bssid, sdata->vif.addr, ETH_ALEN); 11788f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11798f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh ieee80211_tx_skb(sdata, skb); 11808f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh return 0; 11818f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh} 11828f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11838f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeohstatic void mesh_rx_csa_frame(struct ieee80211_sub_if_data *sdata, 11848f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee80211_mgmt *mgmt, size_t len) 11858f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh{ 11868f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 11878f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh struct ieee802_11_elems elems; 11888f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh u16 pre_value; 118933a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh bool fwd_csa = true; 11908f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh size_t baselen; 11913f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh u8 *pos; 11928f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11938f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh if (mgmt->u.action.u.measurement.action_code != 11948f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh WLAN_ACTION_SPCT_CHL_SWITCH) 11958f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh return; 11968f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 11978f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh pos = mgmt->u.action.u.chan_switch.variable; 11988f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh baselen = offsetof(struct ieee80211_mgmt, 11998f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh u.action.u.chan_switch.variable); 12008f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh ieee802_11_parse_elems(pos, len - baselen, false, &elems); 12018f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 12023f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh ifmsh->chsw_ttl = elems.mesh_chansw_params_ie->mesh_ttl; 12033f718fd8401d7db86b9efc3ea1cdf5df41354b9fChun-Yeow Yeoh if (!--ifmsh->chsw_ttl) 12048f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh fwd_csa = false; 12058f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 12068f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh pre_value = le16_to_cpu(elems.mesh_chansw_params_ie->mesh_pre_value); 12078f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh if (ifmsh->pre_value >= pre_value) 12088f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh return; 12098f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 12108f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh ifmsh->pre_value = pre_value; 12118f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 121233a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh if (!ieee80211_mesh_process_chnswitch(sdata, &elems, false)) { 121333a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh mcsa_dbg(sdata, "Failed to process CSA action frame"); 121433a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh return; 121533a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh } 121633a45867c56074a23d01e286890e3b61f3ff8fffChun-Yeow Yeoh 12178f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh /* forward or re-broadcast the CSA frame */ 12188f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh if (fwd_csa) { 12198f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh if (mesh_fwd_csa_frame(sdata, mgmt, len) < 0) 12208f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh mcsa_dbg(sdata, "Failed to forward the CSA frame"); 12218f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh } 12228f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh} 12238f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh 1224472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, 1225472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt, 1226472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t len, 1227472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status) 1228472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 1229472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg switch (mgmt->u.action.category) { 12308db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_CATEGORY_SELF_PROTECTED: 12318db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen switch (mgmt->u.action.u.self_prot.action_code) { 12328db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_OPEN: 12338db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_CLOSE: 12348db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_CONFIRM: 12358db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen mesh_rx_plink_frame(sdata, mgmt, len, rx_status); 12368db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen break; 12378db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen } 1238472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 123925d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen case WLAN_CATEGORY_MESH_ACTION: 124025d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen if (mesh_action_is_path_sel(mgmt)) 124125d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen mesh_rx_path_sel_frame(sdata, mgmt, len); 1242472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 12438f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh case WLAN_CATEGORY_SPECTRUM_MGMT: 12448f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh mesh_rx_csa_frame(sdata, mgmt, len); 12458f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh break; 1246472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg } 1247472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1248472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 12491fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 12501fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 1251472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 1252472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status; 1253472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt; 1254472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg u16 stype; 1255472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1256ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen sdata_lock(sdata); 1257ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen 1258ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen /* mesh already went down */ 1259ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen if (!sdata->wdev.mesh_id_len) 1260ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen goto out; 1261ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen 1262f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 1263472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 1264472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; 1265472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1266472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg switch (stype) { 1267472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 1268472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_BEACON: 1269472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len, 1270472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rx_status); 1271472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 12729fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen case IEEE80211_STYPE_PROBE_REQ: 12739fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen ieee80211_mesh_rx_probe_req(sdata, mgmt, skb->len); 12749fb04b501a57ad29fa989ab3cd2123482e7eac5fThomas Pedersen break; 1275472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_ACTION: 1276472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status); 1277472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 1278472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg } 1279ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersenout: 1280ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen sdata_unlock(sdata); 1281472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1282472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1283f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersenstatic void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata) 1284f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen{ 1285f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1286f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen u32 bit, changed = 0; 1287f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 1288f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen for_each_set_bit(bit, &ifmsh->mbss_changed, 1289f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen sizeof(changed) * BITS_PER_BYTE) { 1290f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen clear_bit(bit, &ifmsh->mbss_changed); 1291f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen changed |= BIT(bit); 1292f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen } 1293f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 1294f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen if (sdata->vif.bss_conf.enable_beacon && 1295f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen (changed & (BSS_CHANGED_BEACON | 1296f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen BSS_CHANGED_HT | 1297f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen BSS_CHANGED_BASIC_RATES | 1298f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen BSS_CHANGED_BEACON_INT))) 1299f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen if (ieee80211_mesh_rebuild_beacon(sdata)) 1300f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen return; 1301f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 1302f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen ieee80211_bss_info_change_notify(sdata, changed); 1303f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen} 1304f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen 13051fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata) 1306472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 1307472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1308472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1309ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen sdata_lock(sdata); 1310ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen 1311ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen /* mesh already went down */ 1312ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen if (!sdata->wdev.mesh_id_len) 1313ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen goto out; 1314ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen 1315472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (ifmsh->preq_queue_len && 1316472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg time_after(jiffies, 1317472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval))) 1318472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mesh_path_start_discovery(sdata); 1319472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 132018889231e4527dfe23145efe318e74744794a95dJavier Cardona if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags)) 132118889231e4527dfe23145efe318e74744794a95dJavier Cardona mesh_mpath_table_grow(); 132218889231e4527dfe23145efe318e74744794a95dJavier Cardona 1323dcac908babcd8ce21057e476c8df609b28ad2cd8Nick Ledovskikh if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags)) 132418889231e4527dfe23145efe318e74744794a95dJavier Cardona mesh_mpp_table_grow(); 132518889231e4527dfe23145efe318e74744794a95dJavier Cardona 132618889231e4527dfe23145efe318e74744794a95dJavier Cardona if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags)) 1327bf7cd94dcc71682cd6af4a9028f95307b7db41c5Johannes Berg ieee80211_mesh_housekeeping(sdata); 1328e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 1329e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags)) 1330e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo ieee80211_mesh_rootpath(sdata); 1331dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona 1332dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags)) 1333dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona mesh_sync_adjust_tbtt(sdata); 1334ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen 1335f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags)) 1336f81a9dedaff434604c7fc3d9c299d277b76db0a8Thomas Pedersen mesh_bss_info_changed(sdata); 1337ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersenout: 1338ecccd072b07e7fd09c54d0f86f9374e2645cde97Thomas Pedersen sdata_unlock(sdata); 1339472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1340472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1341472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) 1342472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 1343472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_sub_if_data *sdata; 1344472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1345472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rcu_read_lock(); 1346472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) 1347370bd005937c0e00f9104a602f9fe1dd6b21b54bBen Greear if (ieee80211_vif_is_mesh(&sdata->vif) && 1348370bd005937c0e00f9104a602f9fe1dd6b21b54bBen Greear ieee80211_sdata_running(sdata)) 134964592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1350472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rcu_read_unlock(); 1351472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1352472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1353902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Bergvoid ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata) 1354902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{ 1355472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1356ad2d223aa900179031feb40273881e212941573dJohannes Berg static u8 zero_addr[ETH_ALEN] = {}; 1357472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1358472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg setup_timer(&ifmsh->housekeeping_timer, 1359472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_housekeeping_timer, 1360472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg (unsigned long) sdata); 1361472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 1362472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->accepting_plinks = true; 1363472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg atomic_set(&ifmsh->mpaths, 0); 1364f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene mesh_rmc_init(sdata); 1365472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->last_preq = jiffies; 1366dca7e9430cb3e492437a5ce891b8b3e315c147caThomas Pedersen ifmsh->next_perr = jiffies; 13678f2535b92d685c68db4bc699dd78462a646f6ef9Chun-Yeow Yeoh ifmsh->chsw_init = false; 1368902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg /* Allocate all mesh structures when creating the first mesh interface. */ 1369902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg if (!mesh_allocated) 1370902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg ieee80211s_init(); 1371472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg setup_timer(&ifmsh->mesh_path_timer, 1372902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg ieee80211_mesh_path_timer, 1373902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg (unsigned long) sdata); 1374e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo setup_timer(&ifmsh->mesh_path_root_timer, 1375e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo ieee80211_mesh_path_root_timer, 1376e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo (unsigned long) sdata); 1377472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg INIT_LIST_HEAD(&ifmsh->preq_queue.list); 13783f52b7e328c526fa7a592af9bf5772c591ed38a4Marco Porsch skb_queue_head_init(&ifmsh->ps.bc_buf); 1379472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg spin_lock_init(&ifmsh->mesh_preq_queue_lock); 1380dbf498fbafa2c23139d5a990e94ed78bafbbea19Javier Cardona spin_lock_init(&ifmsh->sync_offset_lock); 13812b5e19677592c167d012c2d129407f39d2bdeb8dThomas Pedersen RCU_INIT_POINTER(ifmsh->beacon, NULL); 1382ad2d223aa900179031feb40273881e212941573dJohannes Berg 1383ad2d223aa900179031feb40273881e212941573dJohannes Berg sdata->vif.bss_conf.bssid = zero_addr; 1384472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 1385