diff options
author | John W. Linville <linville@tuxdriver.com> | 2013-11-05 15:49:02 -0500 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2013-11-05 15:49:02 -0500 |
commit | 353c78152c10027b8da5de446bad3472f977fcdc (patch) | |
tree | 8663ca32b912e8b3df428f570b7fd376aa3aa0cb /net | |
parent | 01925efdf7e03b4b803b5c9f985163d687f7f017 (diff) | |
parent | d0a361a5b3f5aa28778a0c336de5a911fc0cd678 (diff) |
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Conflicts:
net/wireless/reg.c
Diffstat (limited to 'net')
32 files changed, 1205 insertions, 446 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig index 62535fe9f570..97b5dcad5025 100644 --- a/net/mac80211/Kconfig +++ b/net/mac80211/Kconfig @@ -4,6 +4,7 @@ config MAC80211 select CRYPTO select CRYPTO_ARC4 select CRYPTO_AES + select CRYPTO_CCM select CRC32 select AVERAGE ---help--- @@ -258,6 +259,17 @@ config MAC80211_MESH_SYNC_DEBUG Do not select this option. +config MAC80211_MESH_CSA_DEBUG + bool "Verbose mesh channel switch debugging" + depends on MAC80211_DEBUG_MENU + depends on MAC80211_MESH + ---help--- + Selecting this option causes mac80211 to print out very verbose mesh + channel switch debugging messages (when mac80211 is taking part in a + mesh network). + + Do not select this option. + config MAC80211_MESH_PS_DEBUG bool "Verbose mesh powersave debugging" depends on MAC80211_DEBUG_MENU diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c index be7614b9ed27..7c7df475a401 100644 --- a/net/mac80211/aes_ccm.c +++ b/net/mac80211/aes_ccm.c @@ -2,6 +2,8 @@ * Copyright 2003-2004, Instant802 Networks, Inc. * Copyright 2005-2006, Devicescape Software, Inc. * + * Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. @@ -17,134 +19,75 @@ #include "key.h" #include "aes_ccm.h" -static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *scratch, u8 *a) +void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, + u8 *data, size_t data_len, u8 *mic) { - int i; - u8 *b_0, *aad, *b, *s_0; - - b_0 = scratch + 3 * AES_BLOCK_SIZE; - aad = scratch + 4 * AES_BLOCK_SIZE; - b = scratch; - s_0 = scratch + AES_BLOCK_SIZE; - - crypto_cipher_encrypt_one(tfm, b, b_0); + struct scatterlist assoc, pt, ct[2]; + struct { + struct aead_request req; + u8 priv[crypto_aead_reqsize(tfm)]; + } aead_req; - /* Extra Authenticate-only data (always two AES blocks) */ - for (i = 0; i < AES_BLOCK_SIZE; i++) - aad[i] ^= b[i]; - crypto_cipher_encrypt_one(tfm, b, aad); + memset(&aead_req, 0, sizeof(aead_req)); - aad += AES_BLOCK_SIZE; + sg_init_one(&pt, data, data_len); + sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad)); + sg_init_table(ct, 2); + sg_set_buf(&ct[0], data, data_len); + sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN); - for (i = 0; i < AES_BLOCK_SIZE; i++) - aad[i] ^= b[i]; - crypto_cipher_encrypt_one(tfm, a, aad); + aead_request_set_tfm(&aead_req.req, tfm); + aead_request_set_assoc(&aead_req.req, &assoc, assoc.length); + aead_request_set_crypt(&aead_req.req, &pt, ct, data_len, b_0); - /* Mask out bits from auth-only-b_0 */ - b_0[0] &= 0x07; - - /* S_0 is used to encrypt T (= MIC) */ - b_0[14] = 0; - b_0[15] = 0; - crypto_cipher_encrypt_one(tfm, s_0, b_0); + crypto_aead_encrypt(&aead_req.req); } - -void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *data, size_t data_len, - u8 *cdata, u8 *mic) +int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, + u8 *data, size_t data_len, u8 *mic) { - int i, j, last_len, num_blocks; - u8 *pos, *cpos, *b, *s_0, *e, *b_0; - - b = scratch; - s_0 = scratch + AES_BLOCK_SIZE; - e = scratch + 2 * AES_BLOCK_SIZE; - b_0 = scratch + 3 * AES_BLOCK_SIZE; - - num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE); - last_len = data_len % AES_BLOCK_SIZE; - aes_ccm_prepare(tfm, scratch, b); - - /* Process payload blocks */ - pos = data; - cpos = cdata; - for (j = 1; j <= num_blocks; j++) { - int blen = (j == num_blocks && last_len) ? - last_len : AES_BLOCK_SIZE; - - /* Authentication followed by encryption */ - for (i = 0; i < blen; i++) - b[i] ^= pos[i]; - crypto_cipher_encrypt_one(tfm, b, b); - - b_0[14] = (j >> 8) & 0xff; - b_0[15] = j & 0xff; - crypto_cipher_encrypt_one(tfm, e, b_0); - for (i = 0; i < blen; i++) - *cpos++ = *pos++ ^ e[i]; - } - - for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) - mic[i] = b[i] ^ s_0[i]; + struct scatterlist assoc, pt, ct[2]; + struct { + struct aead_request req; + u8 priv[crypto_aead_reqsize(tfm)]; + } aead_req; + + memset(&aead_req, 0, sizeof(aead_req)); + + sg_init_one(&pt, data, data_len); + sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad)); + sg_init_table(ct, 2); + sg_set_buf(&ct[0], data, data_len); + sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN); + + aead_request_set_tfm(&aead_req.req, tfm); + aead_request_set_assoc(&aead_req.req, &assoc, assoc.length); + aead_request_set_crypt(&aead_req.req, ct, &pt, + data_len + IEEE80211_CCMP_MIC_LEN, b_0); + + return crypto_aead_decrypt(&aead_req.req); } - -int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *cdata, size_t data_len, u8 *mic, u8 *data) +struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[]) { - int i, j, last_len, num_blocks; - u8 *pos, *cpos, *b, *s_0, *a, *b_0; - - b = scratch; - s_0 = scratch + AES_BLOCK_SIZE; - a = scratch + 2 * AES_BLOCK_SIZE; - b_0 = scratch + 3 * AES_BLOCK_SIZE; - - num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE); - last_len = data_len % AES_BLOCK_SIZE; - aes_ccm_prepare(tfm, scratch, a); - - /* Process payload blocks */ - cpos = cdata; - pos = data; - for (j = 1; j <= num_blocks; j++) { - int blen = (j == num_blocks && last_len) ? - last_len : AES_BLOCK_SIZE; - - /* Decryption followed by authentication */ - b_0[14] = (j >> 8) & 0xff; - b_0[15] = j & 0xff; - crypto_cipher_encrypt_one(tfm, b, b_0); - for (i = 0; i < blen; i++) { - *pos = *cpos++ ^ b[i]; - a[i] ^= *pos++; - } - crypto_cipher_encrypt_one(tfm, a, a); - } - - for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) { - if ((mic[i] ^ s_0[i]) != a[i]) - return -1; - } - - return 0; -} + struct crypto_aead *tfm; + int err; + tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(tfm)) + return tfm; -struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]) -{ - struct crypto_cipher *tfm; + err = crypto_aead_setkey(tfm, key, WLAN_KEY_LEN_CCMP); + if (!err) + err = crypto_aead_setauthsize(tfm, IEEE80211_CCMP_MIC_LEN); + if (!err) + return tfm; - tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC); - if (!IS_ERR(tfm)) - crypto_cipher_setkey(tfm, key, WLAN_KEY_LEN_CCMP); - - return tfm; + crypto_free_aead(tfm); + return ERR_PTR(err); } - -void ieee80211_aes_key_free(struct crypto_cipher *tfm) +void ieee80211_aes_key_free(struct crypto_aead *tfm) { - crypto_free_cipher(tfm); + crypto_free_aead(tfm); } diff --git a/net/mac80211/aes_ccm.h b/net/mac80211/aes_ccm.h index 5b7d744e2370..2c7ab1948a2e 100644 --- a/net/mac80211/aes_ccm.h +++ b/net/mac80211/aes_ccm.h @@ -12,13 +12,11 @@ #include <linux/crypto.h> -struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]); -void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *data, size_t data_len, - u8 *cdata, u8 *mic); -int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *cdata, size_t data_len, - u8 *mic, u8 *data); -void ieee80211_aes_key_free(struct crypto_cipher *tfm); +struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[]); +void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, + u8 *data, size_t data_len, u8 *mic); +int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad, + u8 *data, size_t data_len, u8 *mic); +void ieee80211_aes_key_free(struct crypto_aead *tfm); #endif /* AES_CCM_H */ diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index b0a651cc389f..95667b088c5b 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1059,6 +1059,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) /* abort any running channel switch */ sdata->vif.csa_active = false; cancel_work_sync(&sdata->csa_finalize_work); + cancel_work_sync(&sdata->u.ap.request_smps_work); /* turn off carrier for this interface and dependent VLANs */ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) @@ -1342,8 +1343,8 @@ static int sta_apply_parameters(struct ieee80211_local *local, sta->plink_state = params->plink_state; ieee80211_mps_sta_status_update(sta); - changed |= - ieee80211_mps_local_status_update(sdata); + changed |= ieee80211_mps_set_sta_local_pm(sta, + NL80211_MESH_POWER_UNKNOWN); break; default: /* nothing */ @@ -1553,6 +1554,20 @@ static int ieee80211_change_station(struct wiphy *wiphy, mutex_unlock(&local->sta_mtx); + if ((sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && + sta->known_smps_mode != sta->sdata->bss->req_smps && + test_sta_flag(sta, WLAN_STA_AUTHORIZED) && + sta_info_tx_streams(sta) != 1) { + ht_dbg(sta->sdata, + "%pM just authorized and MIMO capable - update SMPS\n", + sta->sta.addr); + ieee80211_send_smps_action(sta->sdata, + sta->sdata->bss->req_smps, + sta->sta.addr, + sta->sdata->vif.bss_conf.bssid); + } + if (sdata->vif.type == NL80211_IFTYPE_STATION && params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { ieee80211_recalc_ps(local, -1); @@ -2337,8 +2352,92 @@ static int ieee80211_testmode_dump(struct wiphy *wiphy, } #endif -int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, - enum ieee80211_smps_mode smps_mode) +int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, + enum ieee80211_smps_mode smps_mode) +{ + struct sta_info *sta; + enum ieee80211_smps_mode old_req; + int i; + + if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) + return -EINVAL; + + if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) + return 0; + + old_req = sdata->u.ap.req_smps; + sdata->u.ap.req_smps = smps_mode; + + /* AUTOMATIC doesn't mean much for AP - don't allow it */ + if (old_req == smps_mode || + smps_mode == IEEE80211_SMPS_AUTOMATIC) + return 0; + + /* If no associated stations, there's no need to do anything */ + if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { + sdata->smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); + return 0; + } + + ht_dbg(sdata, + "SMSP %d requested in AP mode, sending Action frame to %d stations\n", + smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); + + mutex_lock(&sdata->local->sta_mtx); + for (i = 0; i < STA_HASH_SIZE; i++) { + for (sta = rcu_dereference_protected(sdata->local->sta_hash[i], + lockdep_is_held(&sdata->local->sta_mtx)); + sta; + sta = rcu_dereference_protected(sta->hnext, + lockdep_is_held(&sdata->local->sta_mtx))) { + /* + * Only stations associated to our AP and + * associated VLANs + */ + if (sta->sdata->bss != &sdata->u.ap) + continue; + + /* This station doesn't support MIMO - skip it */ + if (sta_info_tx_streams(sta) == 1) + continue; + + /* + * Don't wake up a STA just to send the action frame + * unless we are getting more restrictive. + */ + if (test_sta_flag(sta, WLAN_STA_PS_STA) && + !ieee80211_smps_is_restrictive(sta->known_smps_mode, + smps_mode)) { + ht_dbg(sdata, + "Won't send SMPS to sleeping STA %pM\n", + sta->sta.addr); + continue; + } + + /* + * If the STA is not authorized, wait until it gets + * authorized and the action frame will be sent then. + */ + if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) + continue; + + ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); + ieee80211_send_smps_action(sdata, smps_mode, + sta->sta.addr, + sdata->vif.bss_conf.bssid); + } + } + mutex_unlock(&sdata->local->sta_mtx); + + sdata->smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); + + return 0; +} + +int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, + enum ieee80211_smps_mode smps_mode) { const u8 *ap; enum ieee80211_smps_mode old_req; @@ -2346,6 +2445,9 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, lockdep_assert_held(&sdata->wdev.mtx); + if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) + return -EINVAL; + old_req = sdata->u.mgd.req_smps; sdata->u.mgd.req_smps = smps_mode; @@ -2402,7 +2504,7 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, /* no change, but if automatic follow powersave */ sdata_lock(sdata); - __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); + __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); sdata_unlock(sdata); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) @@ -2860,7 +2962,7 @@ void ieee80211_csa_finalize_work(struct work_struct *work) container_of(work, struct ieee80211_sub_if_data, csa_finalize_work); struct ieee80211_local *local = sdata->local; - int err, changed; + int err, changed = 0; if (!ieee80211_sdata_running(sdata)) return; @@ -2892,6 +2994,13 @@ void ieee80211_csa_finalize_work(struct work_struct *work) case NL80211_IFTYPE_ADHOC: ieee80211_ibss_finish_csa(sdata); break; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + err = ieee80211_mesh_finish_csa(sdata); + if (err < 0) + return; + break; +#endif default: WARN_ON(1); return; @@ -2912,6 +3021,7 @@ static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_chanctx *chanctx; + struct ieee80211_if_mesh __maybe_unused *ifmsh; int err, num_chanctx; if (!list_empty(&local->roc_list) || local->scanning) @@ -2995,6 +3105,26 @@ static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, if (err < 0) return err; break; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + ifmsh = &sdata->u.mesh; + + if (!ifmsh->mesh_id) + return -EINVAL; + + if (params->chandef.width != sdata->vif.bss_conf.chandef.width) + return -EINVAL; + + /* changes into another band are not supported */ + if (sdata->vif.bss_conf.chandef.chan->band != + params->chandef.chan->band) + return -EINVAL; + + err = ieee80211_mesh_csa_beacon(sdata, params, true); + if (err < 0) + return err; + break; +#endif default: return -EOPNOTSUPP; } diff --git a/net/mac80211/debug.h b/net/mac80211/debug.h index 4ccc5ed6237d..493d68061f0c 100644 --- a/net/mac80211/debug.h +++ b/net/mac80211/debug.h @@ -44,6 +44,12 @@ #define MAC80211_MESH_SYNC_DEBUG 0 #endif +#ifdef CONFIG_MAC80211_MESH_CSA_DEBUG +#define MAC80211_MESH_CSA_DEBUG 1 +#else +#define MAC80211_MESH_CSA_DEBUG 0 +#endif + #ifdef CONFIG_MAC80211_MESH_PS_DEBUG #define MAC80211_MESH_PS_DEBUG 1 #else @@ -157,6 +163,10 @@ do { \ _sdata_dbg(MAC80211_MESH_SYNC_DEBUG, \ sdata, fmt, ##__VA_ARGS__) +#define mcsa_dbg(sdata, fmt, ...) \ + _sdata_dbg(MAC80211_MESH_CSA_DEBUG, \ + sdata, fmt, ##__VA_ARGS__) + #define mps_dbg(sdata, fmt, ...) \ _sdata_dbg(MAC80211_MESH_PS_DEBUG, \ sdata, fmt, ##__VA_ARGS__) diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index cafe614ef93d..04b5a14c8a05 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -224,12 +224,15 @@ static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata, smps_mode == IEEE80211_SMPS_AUTOMATIC)) return -EINVAL; - /* supported only on managed interfaces for now */ - if (sdata->vif.type != NL80211_IFTYPE_STATION) + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_AP) return -EOPNOTSUPP; sdata_lock(sdata); - err = __ieee80211_request_smps(sdata, smps_mode); + if (sdata->vif.type == NL80211_IFTYPE_STATION) + err = __ieee80211_request_smps_mgd(sdata, smps_mode); + else + err = __ieee80211_request_smps_ap(sdata, smps_mode); sdata_unlock(sdata); return err; @@ -245,12 +248,15 @@ static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { - if (sdata->vif.type != NL80211_IFTYPE_STATION) - return -EOPNOTSUPP; - - return snprintf(buf, buflen, "request: %s\nused: %s\n", - smps_modes[sdata->u.mgd.req_smps], - smps_modes[sdata->smps_mode]); + if (sdata->vif.type == NL80211_IFTYPE_STATION) + return snprintf(buf, buflen, "request: %s\nused: %s\n", + smps_modes[sdata->u.mgd.req_smps], + smps_modes[sdata->smps_mode]); + if (sdata->vif.type == NL80211_IFTYPE_AP) + return snprintf(buf, buflen, "request: %s\nused: %s\n", + smps_modes[sdata->u.ap.req_smps], + smps_modes[sdata->smps_mode]); + return -EINVAL; } static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata, @@ -563,6 +569,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata) static void add_ap_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(num_mcast_sta); + DEBUGFS_ADD_MODE(smps, 0600); DEBUGFS_ADD(num_sta_ps); DEBUGFS_ADD(dtim_count); DEBUGFS_ADD(num_buffered_multicast); diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 529bf58bc145..9a8be8f69224 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -448,14 +448,25 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, return 0; } -void ieee80211_request_smps_work(struct work_struct *work) +void ieee80211_request_smps_mgd_work(struct work_struct *work) { struct ieee80211_sub_if_data *sdata = container_of(work, struct ieee80211_sub_if_data, u.mgd.request_smps_work); sdata_lock(sdata); - __ieee80211_request_smps(sdata, sdata->u.mgd.driver_smps_mode); + __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.driver_smps_mode); + sdata_unlock(sdata); +} + +void ieee80211_request_smps_ap_work(struct work_struct *work) +{ + struct ieee80211_sub_if_data *sdata = + container_of(work, struct ieee80211_sub_if_data, + u.ap.request_smps_work); + + sdata_lock(sdata); + __ieee80211_request_smps_ap(sdata, sdata->u.ap.driver_smps_mode); sdata_unlock(sdata); } @@ -464,19 +475,29 @@ void ieee80211_request_smps(struct ieee80211_vif *vif, { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); - if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) + if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION && + vif->type != NL80211_IFTYPE_AP)) return; if (WARN_ON(smps_mode == IEEE80211_SMPS_OFF)) smps_mode = IEEE80211_SMPS_AUTOMATIC; - if (sdata->u.mgd.driver_smps_mode == smps_mode) - return; - - sdata->u.mgd.driver_smps_mode = smps_mode; - - ieee80211_queue_work(&sdata->local->hw, - &sdata->u.mgd.request_smps_work); + if (vif->type == NL80211_IFTYPE_STATION) { + if (sdata->u.mgd.driver_smps_mode == smps_mode) + return; + sdata->u.mgd.driver_smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, + &sdata->u.mgd.request_smps_work); + } else { + /* AUTOMATIC is meaningless in AP mode */ + if (WARN_ON_ONCE(smps_mode == IEEE80211_SMPS_AUTOMATIC)) + return; + if (sdata->u.ap.driver_smps_mode == smps_mode) + return; + sdata->u.ap.driver_smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, + &sdata->u.ap.request_smps_work); + } } /* this might change ... don't want non-open drivers using it */ EXPORT_SYMBOL_GPL(ieee80211_request_smps); diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 21a0b8835cb3..531be040b9ae 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -229,6 +229,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, struct beacon_data *presp; enum nl80211_bss_scan_width scan_width; bool have_higher_than_11mbit; + bool radar_required = false; int err; sdata_assert_lock(sdata); @@ -273,6 +274,23 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, } chandef.width = NL80211_CHAN_WIDTH_20; chandef.center_freq1 = chan->center_freq; + /* check again for downgraded chandef */ + if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) { + sdata_info(sdata, + "Failed to join IBSS, beacons forbidden\n"); + return; + } + } + + err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy, + &chandef); + if (err > 0) { + if (!ifibss->userspace_handles_dfs) { + sdata_info(sdata, + "Failed to join IBSS, DFS channel without control program\n"); + return; + } + radar_required = true; } ieee80211_vif_release_channel(sdata); @@ -297,6 +315,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, rcu_assign_pointer(ifibss->presp, presp); mgmt = (void *)presp->head; + sdata->radar_required = radar_required; sdata->vif.bss_conf.enable_beacon = true; sdata->vif.bss_conf.beacon_int = beacon_int; sdata->vif.bss_conf.basic_rates = basic_rates; @@ -445,60 +464,6 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, tsf, false); } -static int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, - struct cfg80211_csa_settings *csa_settings) -{ - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - struct ieee80211_local *local = sdata->local; - int freq; - int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) + - sizeof(mgmt->u.action.u.chan_switch); - u8 *pos; - - skb = dev_alloc_skb(local->tx_headroom + hdr_len + - 5 + /* channel switch announcement element */ - 3); /* secondary channel offset element */ - if (!skb) - return -1; - - skb_reserve(skb, local->tx_headroom); - mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len); - memset(mgmt, 0, hdr_len); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_ACTION); - - eth_broadcast_addr(mgmt->da); - memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); - memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); - mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; - mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; - pos = skb_put(skb, 5); - *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ - *pos++ = 3; /* IE length */ - *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ - freq = csa_settings->chandef.chan->center_freq; - *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ - *pos++ = csa_settings->count; /* count */ - - if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { - enum nl80211_channel_type ch_type; - - skb_put(skb, 3); - *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ - *pos++ = 1; /* IE length */ - ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); - if (ch_type == NL80211_CHAN_HT40PLUS) - *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; - else - *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; - } - - ieee80211_tx_skb(sdata, skb); - return 0; -} - int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, struct cfg80211_csa_settings *csa_settings) { @@ -796,19 +761,34 @@ static void ieee80211_csa_connection_drop_work(struct work_struct *work) ieee80211_queue_work(&sdata->local->hw, &sdata->work); } +static void ieee80211_ibss_csa_mark_radar(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; + int err; + + /* if the current channel is a DFS channel, mark the channel as + * unavailable. + */ + err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy, + &ifibss->chandef); + if (err > 0) + cfg80211_radar_event(sdata->local->hw.wiphy, &ifibss->chandef, + GFP_ATOMIC); +} + static bool ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee802_11_elems *elems, bool beacon) { struct cfg80211_csa_settings params; + struct ieee80211_csa_ie csa_ie; struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_chanctx *chanctx; enum nl80211_channel_type ch_type; int err, num_chanctx; u32 sta_flags; - u8 mode; if (sdata->vif.csa_active) return true; @@ -831,12 +811,10 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, } memset(¶ms, 0, sizeof(params)); + memset(&csa_ie, 0, sizeof(csa_ie)); err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, ifibss->chandef.chan->band, - sta_flags, ifibss->bssid, - ¶ms.count, &mode, - ¶ms.chandef); - + sta_flags, ifibss->bssid, &csa_ie); /* can't switch to destination channel, fail */ if (err < 0) goto disconnect; @@ -845,6 +823,9 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, if (err) return false; + params.count = csa_ie.count; + params.chandef = csa_ie.chandef; + if (ifibss->chandef.chan->band != params.chandef.chan->band) goto disconnect; @@ -880,8 +861,7 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, goto disconnect; } - if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, ¶ms.chandef, - IEEE80211_CHAN_DISABLED)) { + if (!cfg80211_reg_can_beacon(sdata->local->hw.wiphy, ¶ms.chandef)) { sdata_info(sdata, "IBSS %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", ifibss->bssid, @@ -897,10 +877,11 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, if (err < 0) goto disconnect; if (err) { - params.radar_required = true; + /* IBSS-DFS only allowed with a control program */ + if (!ifibss->userspace_handles_dfs) + goto disconnect; - /* TODO: IBSS-DFS not (yet) supported, disconnect. */ - goto disconnect; + params.radar_required = true; } rcu_read_lock(); @@ -931,7 +912,7 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, "received channel switch announcement to go to channel %d MHz\n", params.chandef.chan->center_freq); - params.block_tx = !!mode; + params.block_tx = !!csa_ie.mode; ieee80211_ibss_csa_beacon(sdata, ¶ms); sdata->csa_radar_required = params.radar_required; @@ -947,12 +928,16 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, ieee80211_bss_info_change_notify(sdata, err); drv_channel_switch_beacon(sdata, ¶ms.chandef); |