mesh.c revision dca7e9430cb3e492437a5ce891b8b3e315c147ca
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" 152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 163491707a070c1183c709516b2f876f798c7a9a84Rui Paulo#define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01 173491707a070c1183c709516b2f876f798c7a9a84Rui Paulo#define MESHCONF_CAPAB_FORWARDING 0x08 182e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 195bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#define TMR_RUNNING_HK 0 205bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#define TMR_RUNNING_MP 1 21e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo#define TMR_RUNNING_MPR 2 225bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Coboint mesh_allocated; 242e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic struct kmem_cache *rm_cache; 252e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2625d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#ifdef CONFIG_MAC80211_MESH 2725d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersenbool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt) 2825d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen{ 2925d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen return (mgmt->u.action.u.mesh_action.action_code == 3025d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen WLAN_MESH_ACTION_HWMP_PATH_SELECTION); 3125d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen} 3225d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#else 3325d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersenbool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt) 3425d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen{ return false; } 3525d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#endif 3625d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen 372e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_init(void) 382e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 392e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_pathtbl_init(); 402e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_allocated = 1; 412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry), 422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 0, 0, NULL); 432e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 442e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_stop(void) 462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 472e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo mesh_pathtbl_unregister(); 482e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_destroy(rm_cache); 492e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 502e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 51472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_housekeeping_timer(unsigned long data) 52472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 53472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_sub_if_data *sdata = (void *) data; 54472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_local *local = sdata->local; 55472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 56472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 576b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags); 585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 595bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 605bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg set_bit(TMR_RUNNING_HK, &ifmsh->timers_running); 615bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 6464592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 65472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 66472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 672e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 682e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_matches_local - check if the config of a mesh point matches ours 692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @ie: information elements of a management frame from the mesh peer 71f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene * @sdata: local mesh subif 722e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 732e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * This function checks if the mesh configuration of a mesh point matches the 742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * local mesh configuration, i.e. if both nodes belong to the same mesh network. 752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 76f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenebool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata) 772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 78472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 79739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen struct ieee80211_local *local = sdata->local; 802e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 812e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* 822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * As support for each feature is added, check for matching 832e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - On mesh config capabilities 842e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Power Save Support En 852e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support enabled 862e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support active 872e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Sync support required from peer 882e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - MDA enabled 892e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * - Power management control on fc 902e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 91739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen if (!(ifmsh->mesh_id_len == ie->mesh_id_len && 92739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 && 93739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) && 94739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) && 95739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) && 96739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) && 97739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))) 98739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen goto mismatch; 99739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen 100739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen /* disallow peering with mismatched channel types for now */ 101739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen if (ie->ht_info_elem && 102739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen (local->_oper_channel_type != 103739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen ieee80211_ht_info_to_channel_type(ie->ht_info_elem))) 104739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen goto mismatch; 1052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 106739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersen return true; 107739522baa1d6804a3ff33e8c135db0e6b2165f75Thomas Pedersenmismatch: 1082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return false; 1092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1112e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 1122e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links 1132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 1142e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @ie: information elements of a management frame from the mesh peer 1152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 116f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenebool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie) 1172e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 118136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo return (ie->mesh_config->meshconf_cap & 1193491707a070c1183c709516b2f876f798c7a9a84Rui Paulo MESHCONF_CAPAB_ACCEPT_PLINKS) != 0; 1202e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1212e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1222e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 1232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_accept_plinks_update: update accepting_plink in local mesh beacons 1242e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 125d0709a65181beb787ef3f58cfe45536a2bb254c8Johannes Berg * @sdata: mesh interface in which mesh beacons are going to be updated 1262e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 127d0709a65181beb787ef3f58cfe45536a2bb254c8Johannes Bergvoid mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata) 1282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 1292e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo bool free_plinks; 1302e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1312e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0, 1322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * the mesh interface might be able to establish plinks with peers that 133b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * are already on the table but are not on PLINK_ESTAB state. However, 134b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * in general the mesh interface is not accepting peer link requests 135b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo * from new peers, and that must be reflected in the beacon 1362e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 1372e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo free_plinks = mesh_plink_availables(sdata); 1382e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 139472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (free_plinks != sdata->u.mesh.accepting_plinks) 140472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_housekeeping_timer((unsigned long) sdata); 1412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 143f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greeneint mesh_rmc_init(struct ieee80211_sub_if_data *sdata) 1442e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 1452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int i; 1462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 147472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL); 148472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!sdata->u.mesh.rmc) 1492e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return -ENOMEM; 150472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1; 1512e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo for (i = 0; i < RMC_BUCKETS; i++) 152472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list); 1532e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 1542e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1552e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 156f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenevoid mesh_rmc_free(struct ieee80211_sub_if_data *sdata) 1572e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 158472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct mesh_rmc *rmc = sdata->u.mesh.rmc; 1592e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct rmc_entry *p, *n; 1602e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int i; 1612e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 162472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!sdata->u.mesh.rmc) 1632e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return; 1642e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1652e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo for (i = 0; i < RMC_BUCKETS; i++) 1662e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) { 1672e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_del(&p->list); 1682e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_free(rm_cache, p); 1692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo } 1702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1712e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kfree(rmc); 172472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.rmc = NULL; 1732e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 1742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/** 1762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_rmc_check - Check frame in recent multicast cache and add if absent. 1772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 1782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @sa: source address 1792e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @mesh_hdr: mesh_header 1802e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 1812e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Returns: 0 if the frame is not in the cache, nonzero otherwise. 1822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 1832e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Checks using the source address and the mesh sequence number if we have 1842e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * received this frame lately. If the frame is not in the cache, it is added to 1852e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * it. 1862e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */ 1872e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Coboint mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr, 188f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene struct ieee80211_sub_if_data *sdata) 1892e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 190472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct mesh_rmc *rmc = sdata->u.mesh.rmc; 1912e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo u32 seqnum = 0; 1922e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo int entries = 0; 1932e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo u8 idx; 1942e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct rmc_entry *p, *n; 1952e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 1962e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo /* Don't care about endianness since only match matters */ 19751ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum)); 19851ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask; 1992e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) { 2002e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo ++entries; 2012e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo if (time_after(jiffies, p->exp_time) || 2022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo (entries == RMC_QUEUE_MAX_LEN)) { 2032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_del(&p->list); 2042e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo kmem_cache_free(rm_cache, p); 2052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo --entries; 206f64f9e719261a87818dd192a3a2352e5b20fbd0fJoe Perches } else if ((seqnum == p->seqnum) && 207f64f9e719261a87818dd192a3a2352e5b20fbd0fJoe Perches (memcmp(sa, p->sa, ETH_ALEN) == 0)) 2082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return -1; 2092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo } 2102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 2112e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p = kmem_cache_alloc(rm_cache, GFP_ATOMIC); 212d15b84590a1d2ec021ada00a0e67ee5851a0ea2bJoe Perches if (!p) 2132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 214d15b84590a1d2ec021ada00a0e67ee5851a0ea2bJoe Perches 2152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p->seqnum = seqnum; 2162e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo p->exp_time = jiffies + RMC_TIMEOUT; 2172e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo memcpy(p->sa, sa, ETH_ALEN); 2182e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo list_add(&p->list, &rmc->bucket[idx].list); 2192e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo return 0; 2202e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 2212e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 222082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint 223082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) 224082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 225082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 226082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos, neighbors; 227082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie); 228082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 229082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 2 + meshconf_len) 230082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 231082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 232082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen pos = skb_put(skb, 2 + meshconf_len); 233082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = WLAN_EID_MESH_CONFIG; 234082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = meshconf_len; 235082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 236082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Active path selection protocol ID */ 237082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_pp_id; 238082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Active path selection metric ID */ 239082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_pm_id; 240082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Congestion control mode identifier */ 241082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_cc_id; 242082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Synchronization protocol identifier */ 243082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_sp_id; 244082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Authentication Protocol identifier */ 245082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_auth_id; 246082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Mesh Formation Info - number of neighbors */ 247082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen neighbors = atomic_read(&ifmsh->mshstats.estab_plinks); 248082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Number of neighbor mesh STAs or 15 whichever is smaller */ 249082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen neighbors = (neighbors > 15) ? 15 : neighbors; 250082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = neighbors << 1; 251082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* Mesh capability */ 252082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen ifmsh->accepting_plinks = mesh_plink_availables(sdata); 253082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos = MESHCONF_CAPAB_FORWARDING; 254082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ |= ifmsh->accepting_plinks ? 255082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00; 256082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = 0x00; 257082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 258082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 259082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 260082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 261082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint 262082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) 263082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 264082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 265082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos; 266082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 267082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len) 268082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 269082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 270082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen pos = skb_put(skb, 2 + ifmsh->mesh_id_len); 271082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = WLAN_EID_MESH_ID; 272082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen *pos++ = ifmsh->mesh_id_len; 273082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (ifmsh->mesh_id_len) 274082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len); 275082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 276082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 277082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 278082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 279082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint 280082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) 281082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 282082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 283082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 offset, len; 284082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen const u8 *data; 285082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 286082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (!ifmsh->ie || !ifmsh->ie_len) 287082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 288082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 289082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* fast-forward to vendor IEs */ 290082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0); 291082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 292082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (offset) { 293082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen len = ifmsh->ie_len - offset; 294082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data = ifmsh->ie + offset; 295082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < len) 296082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 297082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(skb_put(skb, len), data, len); 298082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 299082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 300082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 301082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 302082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 303082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint 304082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) 305082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 306082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 307082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 len = 0; 308082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen const u8 *data; 309082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 310082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (!ifmsh->ie || !ifmsh->ie_len) 311082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 312082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 313082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen /* find RSN IE */ 314082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data = ifmsh->ie; 315082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen while (data < ifmsh->ie + ifmsh->ie_len) { 316082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (*data == WLAN_EID_RSN) { 317082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen len = data[1] + 2; 318082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen break; 319082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 320082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen data++; 321082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 322082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 323082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (len) { 324082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < len) 325082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 326082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen memcpy(skb_put(skb, len), data, len); 327082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen } 328082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 329082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 330082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen} 331082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 332082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint mesh_add_ds_params_ie(struct sk_buff *skb, 333082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_sub_if_data *sdata) 334082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{ 335082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_local *local = sdata->local; 336082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen struct ieee80211_supported_band *sband; 337082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen u8 *pos; 3382e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 339082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen if (skb_tailroom(skb) < 3) 340082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return -ENOMEM; 341082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen 342082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 343be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo if (sband->band == IEEE80211_BAND_2GHZ) { 344be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo pos = skb_put(skb, 2 + 1); 345be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo *pos++ = WLAN_EID_DS_PARAMS; 346be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo *pos++ = 1; 347be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq); 348be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo } 349be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo 350082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen return 0; 3512e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 3522e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 353176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersenint mesh_add_ht_cap_ie(struct sk_buff *skb, 354176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_sub_if_data *sdata) 355176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen{ 356176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_local *local = sdata->local; 357176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_supported_band *sband; 358176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen u8 *pos; 359176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 360176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen sband = local->hw.wiphy->bands[local->oper_channel->band]; 361176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (!sband->ht_cap.ht_supported || 362176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen local->_oper_channel_type == NL80211_CHAN_NO_HT) 363176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 364176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 365176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 366176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return -ENOMEM; 367176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 368176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 369ef96a84202ccfb48a4569256ffba45e32308f7eeBen Greear ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap); 370176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 371176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 372176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen} 373176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 374176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersenint mesh_add_ht_info_ie(struct sk_buff *skb, 375176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_sub_if_data *sdata) 376176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen{ 377176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_local *local = sdata->local; 378176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_channel *channel = local->oper_channel; 379176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen enum nl80211_channel_type channel_type = local->_oper_channel_type; 380176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_supported_band *sband = 381176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen local->hw.wiphy->bands[channel->band]; 382176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap; 383176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen u8 *pos; 384176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 385176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT) 386176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 387176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 388176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_info)) 389176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return -ENOMEM; 390176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 391176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_info)); 392176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen ieee80211_ie_build_ht_info(pos, ht_cap, channel, channel_type); 393176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen 394176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen return 0; 395176f36086e8a00bdf701dc6e4c5a8784ef6529dfThomas Pedersen} 3962e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic void ieee80211_mesh_path_timer(unsigned long data) 3972e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{ 3982e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo struct ieee80211_sub_if_data *sdata = 3992e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo (struct ieee80211_sub_if_data *) data; 400472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 401133b822638ff01eb1e32e1917b197c40ed095dddJohannes Berg struct ieee80211_local *local = sdata->local; 4022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 4035bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 4045bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg set_bit(TMR_RUNNING_MP, &ifmsh->timers_running); 4055bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 4065bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 4075bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 40864592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 4092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo} 4102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo 411e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_path_root_timer(unsigned long data) 412e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{ 413e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_sub_if_data *sdata = 414e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo (struct ieee80211_sub_if_data *) data; 415e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 416e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_local *local = sdata->local; 417e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 418e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 419e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 420e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo if (local->quiescing) { 421e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running); 422e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo return; 423e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo } 424e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 42564592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 426e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo} 427e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 42863c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulovoid ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh) 42963c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo{ 43063c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo if (ifmsh->mshcfg.dot11MeshHWMPRootMode) 43163c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 43263c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo else { 43363c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags); 43463c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo /* stop running timer */ 43563c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo del_timer_sync(&ifmsh->mesh_path_root_timer); 43663c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo } 43763c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo} 43863c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo 439902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg/** 4403c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame 4413c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @hdr: 802.11 frame header 4423c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @fc: frame control field 4433c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshda: destination address in the mesh 4443c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshsa: source address address in the mesh. Same as TA, as frame is 4453c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * locally originated. 4463c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * 4473c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * Return the length of the 802.11 (does not include a mesh control header) 4483c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona */ 44915ff63653e507ec928a4a4386405a82446e096b1Johannes Bergint ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc, 45015ff63653e507ec928a4a4386405a82446e096b1Johannes Berg const u8 *meshda, const u8 *meshsa) 45115ff63653e507ec928a4a4386405a82446e096b1Johannes Berg{ 4523c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona if (is_multicast_ether_addr(meshda)) { 4533c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); 4543c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona /* DA TA SA */ 4553c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr1, meshda, ETH_ALEN); 4563c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr2, meshsa, ETH_ALEN); 4573c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr3, meshsa, ETH_ALEN); 4583c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona return 24; 4593c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } else { 4602154c81c32fa44364f83218a10d8dbec4e76d4f5Javier Cardona *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); 4613c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona /* RA TA DA SA */ 4623c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */ 4633c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr2, meshsa, ETH_ALEN); 4643c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr3, meshda, ETH_ALEN); 4653c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona memcpy(hdr->addr4, meshsa, ETH_ALEN); 4663c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona return 30; 4673c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } 4683c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona} 4693c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona 4703c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona/** 471902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * ieee80211_new_mesh_header - create a new mesh header 472902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * @meshhdr: uninitialized mesh header 473902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * @sdata: mesh interface to be used 47461ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr4or5: 1st address in the ae header, which may correspond to address 4 47561ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * (if addr6 is NULL) or address 5 (if addr6 is present). It may 47661ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * be NULL. 47761ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr6: 2nd address in the ae header, which corresponds to addr6 of the 47861ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * mesh frame 479902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * 480902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * Return the header length. 481902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg */ 482902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Bergint ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr, 48361ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona struct ieee80211_sub_if_data *sdata, char *addr4or5, 48461ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona char *addr6) 485902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{ 4863c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona int aelen = 0; 48761ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona BUG_ON(!addr4or5 && addr6); 4880c3cee72a403e3b4992a5478c9c33d668c246c22Julia Lawall memset(meshhdr, 0, sizeof(*meshhdr)); 489472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL; 490472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum); 491472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg sdata->u.mesh.mesh_seqnum++; 49261ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona if (addr4or5 && !addr6) { 4933c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona meshhdr->flags |= MESH_FLAGS_AE_A4; 4943c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona aelen += ETH_ALEN; 49561ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN); 49661ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona } else if (addr4or5 && addr6) { 4973c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona meshhdr->flags |= MESH_FLAGS_AE_A5_A6; 4983c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona aelen += 2 * ETH_ALEN; 49961ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN); 50061ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona memcpy(meshhdr->eaddr2, addr6, ETH_ALEN); 5013c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona } 5023c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona return 6 + aelen; 503902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg} 504902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg 505472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, 506472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh) 507472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 508472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg bool free_plinks; 509472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 510472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG 511472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg printk(KERN_DEBUG "%s: running mesh housekeeping\n", 51247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name); 513472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg#endif 514472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 515472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); 516472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mesh_path_expire(sdata); 517472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 518472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg free_plinks = mesh_plink_availables(sdata); 519472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (free_plinks != sdata->u.mesh.accepting_plinks) 5202d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); 521472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 522472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mod_timer(&ifmsh->housekeeping_timer, 523472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL)); 524472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 525472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 526e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata) 527e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{ 528e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 529e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 530e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo mesh_path_tx_root_frame(sdata); 531e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo mod_timer(&ifmsh->mesh_path_root_timer, 532c613366113c8956ee869e12558099927586785bbThomas Pedersen round_jiffies(TU_TO_EXP_TIME( 533c613366113c8956ee869e12558099927586785bbThomas Pedersen ifmsh->mshcfg.dot11MeshHWMPRannInterval))); 534e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo} 535e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 5365bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 5375bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata) 5385bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 5395bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 5405bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 5415ee68e5b39de5cefecf147c58711f8ab01c21231Javier Cardona /* use atomic bitops in case all timers fire at the same time */ 5425bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 5435bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifmsh->housekeeping_timer)) 5445bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg set_bit(TMR_RUNNING_HK, &ifmsh->timers_running); 5455bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifmsh->mesh_path_timer)) 5465bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg set_bit(TMR_RUNNING_MP, &ifmsh->timers_running); 547e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo if (del_timer_sync(&ifmsh->mesh_path_root_timer)) 548e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running); 5495bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 5505bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 5515bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata) 5525bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 5535bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 5545bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 5555bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running)) 5565bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifmsh->housekeeping_timer); 5575bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running)) 5585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifmsh->mesh_path_timer); 559e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running)) 560e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo add_timer(&ifmsh->mesh_path_root_timer); 56163c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo ieee80211_mesh_root_setup(ifmsh); 5625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 5635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 564472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 565472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) 566472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 567472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 568472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_local *local = sdata->local; 569472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 57009b174702601079c3a04806754be30ffbd70db4dJohannes Berg local->fif_other_bss++; 57109b174702601079c3a04806754be30ffbd70db4dJohannes Berg /* mesh ifaces must set allmulti to forward mcast traffic */ 57209b174702601079c3a04806754be30ffbd70db4dJohannes Berg atomic_inc(&local->iff_allmultis); 57309b174702601079c3a04806754be30ffbd70db4dJohannes Berg ieee80211_configure_filter(local); 57409b174702601079c3a04806754be30ffbd70db4dJohannes Berg 575c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona ifmsh->mesh_cc_id = 0; /* Disabled */ 576c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona ifmsh->mesh_sp_id = 0; /* Neighbor Offset */ 577c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona ifmsh->mesh_auth_id = 0; /* Disabled */ 5786b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags); 57963c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo ieee80211_mesh_root_setup(ifmsh); 58064592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 5815b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL; 5822d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON | 5835b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona BSS_CHANGED_BEACON_ENABLED | 5845b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona BSS_CHANGED_BEACON_INT); 585472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 586472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 587472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata) 588472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 58909b174702601079c3a04806754be30ffbd70db4dJohannes Berg struct ieee80211_local *local = sdata->local; 59029cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 59129cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg 59229cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg ifmsh->mesh_id_len = 0; 59329cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 59429cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg sta_info_flush(local, NULL); 59509b174702601079c3a04806754be30ffbd70db4dJohannes Berg 596472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg del_timer_sync(&sdata->u.mesh.housekeeping_timer); 597e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo del_timer_sync(&sdata->u.mesh.mesh_path_root_timer); 598472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg /* 599b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg * If the timer fired while we waited for it, it will have 600b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg * requeued the work. Now the work will be running again 601b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg * but will not rearm the timer again because it checks 602b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg * whether the interface is running, which, at this point, 603b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg * it no longer is. 604b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg */ 60564592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg cancel_work_sync(&sdata->work); 60609b174702601079c3a04806754be30ffbd70db4dJohannes Berg 60709b174702601079c3a04806754be30ffbd70db4dJohannes Berg local->fif_other_bss--; 60809b174702601079c3a04806754be30ffbd70db4dJohannes Berg atomic_dec(&local->iff_allmultis); 60909b174702601079c3a04806754be30ffbd70db4dJohannes Berg ieee80211_configure_filter(local); 610472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 611472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 612472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata, 613472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg u16 stype, 614472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt, 615472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t len, 616472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status) 617472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 618c6a1fa12d206882757264869f8e32d606b930e2aJohannes Berg struct ieee80211_local *local = sdata->local; 619472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee802_11_elems elems; 620472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_channel *channel; 621881d948c23442173a011f1adcfe4c95bf7f27515Johannes Berg u32 supp_rates = 0; 622472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t baselen; 623472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg int freq; 624472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg enum ieee80211_band band = rx_status->band; 625472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 626472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg /* ignore ProbeResp to foreign address */ 627472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (stype == IEEE80211_STYPE_PROBE_RESP && 62847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg compare_ether_addr(mgmt->da, sdata->vif.addr)) 629472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 630472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 631472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 632472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (baselen > len) 633472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 634472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 635472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 636472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg &elems); 637472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 6385cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona /* ignore beacons from secure mesh peers if our security is off */ 639b130e5cec958bae3867cf6ab09a9b24ba8fada01Javier Cardona if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) 6405cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona return; 6415cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona 642472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (elems.ds_params && elems.ds_params_len == 1) 64359eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems.ds_params[0], band); 644472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg else 645472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg freq = rx_status->freq; 646472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 647472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 648472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 649472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 650472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg return; 651472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 652472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (elems.mesh_id && elems.mesh_config && 653472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mesh_matches_local(&elems, sdata)) { 654472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg supp_rates = ieee80211_sta_get_rates(local, &elems, band); 6551570ca59279a74db73b8ff840abdfaf64a9ee2ffJavier Cardona mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems); 656472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg } 657472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 658472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 659472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, 660472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt, 661472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg size_t len, 662472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status) 663472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 664472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg switch (mgmt->u.action.category) { 6658db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_CATEGORY_SELF_PROTECTED: 6668db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen switch (mgmt->u.action.u.self_prot.action_code) { 6678db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_OPEN: 6688db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_CLOSE: 6698db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen case WLAN_SP_MESH_PEERING_CONFIRM: 6708db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen mesh_rx_plink_frame(sdata, mgmt, len, rx_status); 6718db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen break; 6728db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen } 673472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 67425d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen case WLAN_CATEGORY_MESH_ACTION: 67525d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen if (mesh_action_is_path_sel(mgmt)) 67625d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen mesh_rx_path_sel_frame(sdata, mgmt, len); 677472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 678472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg } 679472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 680472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 6811fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 6821fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 683472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 684472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_rx_status *rx_status; 685472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_mgmt *mgmt; 686472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg u16 stype; 687472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 688f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 689472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 690472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; 691472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 692472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg switch (stype) { 693472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 694472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_BEACON: 695472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len, 696472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rx_status); 697472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 698472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg case IEEE80211_STYPE_ACTION: 699472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status); 700472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg break; 701472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg } 702472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 703472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 7041fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata) 705472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 706472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 707472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 708472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (ifmsh->preq_queue_len && 709472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg time_after(jiffies, 710472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval))) 711472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg mesh_path_start_discovery(sdata); 712472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 71318889231e4527dfe23145efe318e74744794a95dJavier Cardona if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags)) 71418889231e4527dfe23145efe318e74744794a95dJavier Cardona mesh_mpath_table_grow(); 71518889231e4527dfe23145efe318e74744794a95dJavier Cardona 716dcac908babcd8ce21057e476c8df609b28ad2cd8Nick Ledovskikh if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags)) 71718889231e4527dfe23145efe318e74744794a95dJavier Cardona mesh_mpp_table_grow(); 71818889231e4527dfe23145efe318e74744794a95dJavier Cardona 71918889231e4527dfe23145efe318e74744794a95dJavier Cardona if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags)) 720472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_housekeeping(sdata, ifmsh); 721e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo 722e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags)) 723e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo ieee80211_mesh_rootpath(sdata); 724472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 725472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 726472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) 727472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{ 728472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_sub_if_data *sdata; 729472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 730472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rcu_read_lock(); 731472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg list_for_each_entry_rcu(sdata, &local->interfaces, list) 732472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg if (ieee80211_vif_is_mesh(&sdata->vif)) 73364592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 734472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg rcu_read_unlock(); 735472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 736472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 737902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Bergvoid ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata) 738902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{ 739472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 740472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 741472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg setup_timer(&ifmsh->housekeeping_timer, 742472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ieee80211_mesh_housekeeping_timer, 743472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg (unsigned long) sdata); 744472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg 745472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->accepting_plinks = true; 746472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->preq_id = 0; 747d19b3bf6384e66ac6e11a61ee31ed2cfe149f4d8Rui Paulo ifmsh->sn = 0; 7485ee68e5b39de5cefecf147c58711f8ab01c21231Javier Cardona ifmsh->num_gates = 0; 749472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg atomic_set(&ifmsh->mpaths, 0); 750f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene mesh_rmc_init(sdata); 751472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg ifmsh->last_preq = jiffies; 752dca7e9430cb3e492437a5ce891b8b3e315c147caThomas Pedersen ifmsh->next_perr = jiffies; 753902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg /* Allocate all mesh structures when creating the first mesh interface. */ 754902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg if (!mesh_allocated) 755902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg ieee80211s_init(); 756472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg setup_timer(&ifmsh->mesh_path_timer, 757902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg ieee80211_mesh_path_timer, 758902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg (unsigned long) sdata); 759e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo setup_timer(&ifmsh->mesh_path_root_timer, 760e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo ieee80211_mesh_path_root_timer, 761e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo (unsigned long) sdata); 762472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg INIT_LIST_HEAD(&ifmsh->preq_queue.list); 763472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg spin_lock_init(&ifmsh->mesh_preq_queue_lock); 764472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg} 765