From 64badcb6d6459cc6f7b46f7d45e44c95ab874337 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Thu, 18 Sep 2014 11:18:02 +0300 Subject: ath10k: workaround fw beaconing bug Some firmware revisions don't wait for beacon tx completion before sending another SWBA event. This could lead to hardware using old (freed) beacon data in some cases, e.g. tx credit starvation combined with missed TBTT. This is very very rare. On non-IOMMU-enabled hosts this could be a possible security issue because hw could beacon some random data on the air. On IOMMU-enabled hosts DMAR faults would occur in most cases and target device would crash. Since there are no beacon tx completions (implicit nor explicit) propagated to host the only workaround for this is to allocate a DMA-coherent buffer for a lifetime of a vif and use it for all beacon tx commands. Worst case for this approach is some beacons may become corrupted, e.g. garbled IEs or out-of-date TIM bitmap. Keep the original beacon-related code as-is in case future firmware revisions solve this problem so that the old path can be easily re-enabled with a fw_feature flag. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 106 ++++++++++++++++++++++++---------- 1 file changed, 77 insertions(+), 29 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index c708c10..fe00a71 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -479,6 +479,40 @@ static void ath10k_peer_cleanup_all(struct ath10k *ar) /* Interface management */ /************************/ +void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + + lockdep_assert_held(&ar->data_lock); + + if (!arvif->beacon) + return; + + if (!arvif->beacon_buf) + dma_unmap_single(ar->dev, ATH10K_SKB_CB(arvif->beacon)->paddr, + arvif->beacon->len, DMA_TO_DEVICE); + + dev_kfree_skb_any(arvif->beacon); + + arvif->beacon = NULL; + arvif->beacon_sent = false; +} + +static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + + lockdep_assert_held(&ar->data_lock); + + ath10k_mac_vif_beacon_free(arvif); + + if (arvif->beacon_buf) { + dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN, + arvif->beacon_buf, arvif->beacon_paddr); + arvif->beacon_buf = NULL; + } +} + static inline int ath10k_vdev_setup_sync(struct ath10k *ar) { int ret; @@ -909,15 +943,7 @@ static void ath10k_control_beaconing(struct ath10k_vif *arvif, arvif->is_up = false; spin_lock_bh(&arvif->ar->data_lock); - if (arvif->beacon) { - dma_unmap_single(arvif->ar->dev, - ATH10K_SKB_CB(arvif->beacon)->paddr, - arvif->beacon->len, DMA_TO_DEVICE); - dev_kfree_skb_any(arvif->beacon); - - arvif->beacon = NULL; - arvif->beacon_sent = false; - } + ath10k_mac_vif_beacon_free(arvif); spin_unlock_bh(&arvif->ar->data_lock); return; @@ -2376,16 +2402,8 @@ void ath10k_halt(struct ath10k *ar) ath10k_hif_power_down(ar); spin_lock_bh(&ar->data_lock); - list_for_each_entry(arvif, &ar->arvifs, list) { - if (!arvif->beacon) - continue; - - dma_unmap_single(arvif->ar->dev, - ATH10K_SKB_CB(arvif->beacon)->paddr, - arvif->beacon->len, DMA_TO_DEVICE); - dev_kfree_skb_any(arvif->beacon); - arvif->beacon = NULL; - } + list_for_each_entry(arvif, &ar->arvifs, list) + ath10k_mac_vif_beacon_cleanup(arvif); spin_unlock_bh(&ar->data_lock); } @@ -2804,8 +2822,39 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, break; } - ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d\n", - arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype); + /* Some firmware revisions don't wait for beacon tx completion before + * sending another SWBA event. This could lead to hardware using old + * (freed) beacon data in some cases, e.g. tx credit starvation + * combined with missed TBTT. This is very very rare. + * + * On non-IOMMU-enabled hosts this could be a possible security issue + * because hw could beacon some random data on the air. On + * IOMMU-enabled hosts DMAR faults would occur in most cases and target + * device would crash. + * + * Since there are no beacon tx completions (implicit nor explicit) + * propagated to host the only workaround for this is to allocate a + * DMA-coherent buffer for a lifetime of a vif and use it for all + * beacon tx commands. Worst case for this approach is some beacons may + * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap. + */ + if (vif->type == NL80211_IFTYPE_ADHOC || + vif->type == NL80211_IFTYPE_AP) { + arvif->beacon_buf = dma_zalloc_coherent(ar->dev, + IEEE80211_MAX_FRAME_LEN, + &arvif->beacon_paddr, + GFP_KERNEL); + if (!arvif->beacon_buf) { + ret = -ENOMEM; + ath10k_warn(ar, "failed to allocate beacon buffer: %d\n", + ret); + goto err; + } + } + + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n", + arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype, + arvif->beacon_buf ? "single-buf" : "per-skb"); ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype, vif->addr); @@ -2912,6 +2961,12 @@ err_vdev_delete: list_del(&arvif->list); err: + if (arvif->beacon_buf) { + dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN, + arvif->beacon_buf, arvif->beacon_paddr); + arvif->beacon_buf = NULL; + } + mutex_unlock(&ar->conf_mutex); return ret; @@ -2929,14 +2984,7 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw, cancel_work_sync(&arvif->wep_key_work); spin_lock_bh(&ar->data_lock); - if (arvif->beacon) { - dma_unmap_single(arvif->ar->dev, - ATH10K_SKB_CB(arvif->beacon)->paddr, - arvif->beacon->len, DMA_TO_DEVICE); - dev_kfree_skb_any(arvif->beacon); - arvif->beacon = NULL; - } - + ath10k_mac_vif_beacon_cleanup(arvif); spin_unlock_bh(&ar->data_lock); ret = ath10k_spectral_vif_stop(arvif); -- cgit v1.1 From fdb959c7e408b6b435c999e2fc7d8133fa95863d Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Thu, 18 Sep 2014 15:21:19 +0200 Subject: ath10k: fix tx/rx chainmask init Firmware reports the number of RF chains so use that for initialization of supp_{tx,rx}_chainmask instead of using a macro for 3x3 chips. This should make tx/rx chainmask reports correct for chips other than 3x3. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index fe00a71..d3e4502 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -4848,15 +4848,6 @@ int ath10k_mac_register(struct ath10k *ar) BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); - if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) { - /* TODO: Have to deal with 2x2 chips if/when the come out. */ - ar->supp_tx_chainmask = TARGET_10X_TX_CHAIN_MASK; - ar->supp_rx_chainmask = TARGET_10X_RX_CHAIN_MASK; - } else { - ar->supp_tx_chainmask = TARGET_TX_CHAIN_MASK; - ar->supp_rx_chainmask = TARGET_RX_CHAIN_MASK; - } - ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask; ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask; -- cgit v1.1 From 2d66721c7bb1a6888eb17dd29758daf642df0b82 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Thu, 18 Sep 2014 15:21:21 +0200 Subject: ath10k: deduplicate wmi_channel code The structure is being set up in 2 places. Deduplicate the code by creating a helper. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index d3e4502..51b16e1 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1755,6 +1755,7 @@ static int ath10k_update_channel_list(struct ath10k *ar) ch->passive = passive; ch->freq = channel->center_freq; + ch->band_center_freq1 = channel->center_freq; ch->min_power = 0; ch->max_power = channel->max_power * 2; ch->max_reg_power = channel->max_reg_power * 2; -- cgit v1.1 From 6cddcc7ac215a3e988ec2cbf303fb0a39220dc3b Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Mon, 29 Sep 2014 14:41:46 +0300 Subject: ath10k: support ethtool stats Add support for reading firmware stats through the ethtool API. This may be easier for applications to manipulate compared to parsing a text based debugfs file. kvalo: remove unneeded ifdefs, call ath10k_debug_fw_stats_request() and added simple error handling Signed-off-by: Ben Greear Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 51b16e1..a65572c 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -4505,6 +4505,9 @@ static const struct ieee80211_ops ath10k_ops = { .sta_rc_update = ath10k_sta_rc_update, .get_tsf = ath10k_get_tsf, .ampdu_action = ath10k_ampdu_action, + .get_et_sset_count = ath10k_debug_get_et_sset_count, + .get_et_stats = ath10k_debug_get_et_stats, + .get_et_strings = ath10k_debug_get_et_strings, CFG80211_TESTMODE_CMD(ath10k_tm_cmd) -- cgit v1.1 From 16c1117675e20108612e1579362fdd75fa48a375 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Tue, 23 Sep 2014 14:17:16 -0700 Subject: ath10k: use 64-bit vdev map This can allow more than 32 stations to be supported without over-running the bitmap. Signed-off-by: Ben Greear Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index a65572c..4a061a7 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -624,9 +624,9 @@ static int ath10k_monitor_vdev_create(struct ath10k *ar) return -ENOMEM; } - bit = ffs(ar->free_vdev_map); + bit = __ffs64(ar->free_vdev_map); - ar->monitor_vdev_id = bit - 1; + ar->monitor_vdev_id = bit; ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id, WMI_VDEV_TYPE_MONITOR, @@ -637,7 +637,7 @@ static int ath10k_monitor_vdev_create(struct ath10k *ar) return ret; } - ar->free_vdev_map &= ~(1 << ar->monitor_vdev_id); + ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id); ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n", ar->monitor_vdev_id); @@ -657,7 +657,7 @@ static int ath10k_monitor_vdev_delete(struct ath10k *ar) return ret; } - ar->free_vdev_map |= 1 << ar->monitor_vdev_id; + ar->free_vdev_map |= 1LL << ar->monitor_vdev_id; ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n", ar->monitor_vdev_id); @@ -2791,9 +2791,12 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, ret = -EBUSY; goto err; } - bit = ffs(ar->free_vdev_map); + bit = __ffs64(ar->free_vdev_map); - arvif->vdev_id = bit - 1; + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n", + bit, ar->free_vdev_map); + + arvif->vdev_id = bit; arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE; if (ar->p2p) @@ -2865,7 +2868,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, goto err; } - ar->free_vdev_map &= ~(1 << arvif->vdev_id); + ar->free_vdev_map &= ~(1LL << arvif->vdev_id); list_add(&arvif->list, &ar->arvifs); vdev_param = ar->wmi.vdev_param->def_keyid; @@ -2958,7 +2961,7 @@ err_peer_delete: err_vdev_delete: ath10k_wmi_vdev_delete(ar, arvif->vdev_id); - ar->free_vdev_map |= 1 << arvif->vdev_id; + ar->free_vdev_map |= 1LL << arvif->vdev_id; list_del(&arvif->list); err: @@ -2993,7 +2996,7 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw, ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n", arvif->vdev_id, ret); - ar->free_vdev_map |= 1 << arvif->vdev_id; + ar->free_vdev_map |= 1LL << arvif->vdev_id; list_del(&arvif->list); if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { -- cgit v1.1 From 3c7984e97f32d39d6cfee1b3e57d5b3ab70665dc Mon Sep 17 00:00:00 2001 From: Janusz Dziedzic Date: Thu, 2 Oct 2014 13:56:40 +0200 Subject: ath10k: don't create bssid peer for ibss It's not really necessary to create bssid peer for bssid. Self-address peer is sufficient. This prevents some firmware revisions from crashing. Signed-off-by: Janusz Dziedzic Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 4a061a7..1191857 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -992,14 +992,6 @@ static void ath10k_control_ibss(struct ath10k_vif *arvif, if (is_zero_ether_addr(arvif->bssid)) return; - ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, - arvif->bssid); - if (ret) { - ath10k_warn(ar, "failed to delete IBSS BSSID peer %pM for vdev %d: %d\n", - arvif->bssid, arvif->vdev_id, ret); - return; - } - memset(arvif->bssid, 0, ETH_ALEN); return; @@ -3127,17 +3119,17 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw, if (changed & BSS_CHANGED_BSSID && vif->type != NL80211_IFTYPE_AP) { if (!is_zero_ether_addr(info->bssid)) { - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac vdev %d create peer %pM\n", - arvif->vdev_id, info->bssid); - - ret = ath10k_peer_create(ar, arvif->vdev_id, - info->bssid); - if (ret) - ath10k_warn(ar, "failed to add peer %pM for vdev %d when changing bssid: %i\n", - info->bssid, arvif->vdev_id, ret); - if (vif->type == NL80211_IFTYPE_STATION) { + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac vdev %d create peer %pM\n", + arvif->vdev_id, info->bssid); + + ret = ath10k_peer_create(ar, arvif->vdev_id, + info->bssid); + if (ret) + ath10k_warn(ar, "failed to add peer %pM for vdev %d when changing bssid: %i\n", + info->bssid, arvif->vdev_id, + ret); /* * this is never erased as we it for crypto key * clearing; this is FW requirement -- cgit v1.1 From 82d7aba71541a308bc19e869f7cf7423672dee37 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Fri, 10 Oct 2014 17:38:27 +0530 Subject: ath10k: fix kernel panic while shutting down AP Based on GFP flag given to DMA coherent allocation, the behaviour of dma_free_coherent is changed. This behavioural diffrence is noticeable in ARM platform. If DMA memory is allocated with GFP_KERNEL, free coherent can not be called inside spin lock. This is causing kernel crash in ARM platforms. Fix this by changing GFP flag to atomic. This is most likely a regression from commit 64badcb6d645 ("ath10k: workaround fw beaconing bug"). Cc: Michal Kazior Signed-off-by: Rajkumar Manoharan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 1191857..b2bd80c 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -2839,7 +2839,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, arvif->beacon_buf = dma_zalloc_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN, &arvif->beacon_paddr, - GFP_KERNEL); + GFP_ATOMIC); if (!arvif->beacon_buf) { ret = -ENOMEM; ath10k_warn(ar, "failed to allocate beacon buffer: %d\n", -- cgit v1.1 From 590922a824cd9c16b3f43c59e4defd411a3be5dc Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Tue, 21 Oct 2014 10:10:29 +0300 Subject: ath10k: clean up assoc code There's no need to pass bss_conf explicitly as it is accessible via vif pointer. This requires slight changes in function prototypes. While at it clean up listen interval workaround/command. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 94 +++++++++++++++++------------------ 1 file changed, 46 insertions(+), 48 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index b2bd80c..39c4029 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1060,51 +1060,45 @@ static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif) /* Station management */ /**********************/ +static u32 ath10k_peer_assoc_h_listen_intval(struct ath10k *ar, + struct ieee80211_vif *vif) +{ + /* Some firmware revisions have unstable STA powersave when listen + * interval is set too high (e.g. 5). The symptoms are firmware doesn't + * generate NullFunc frames properly even if buffered frames have been + * indicated in Beacon TIM. Firmware would seldom wake up to pull + * buffered frames. Often pinging the device from AP would simply fail. + * + * As a workaround set it to 1. + */ + if (vif->type == NL80211_IFTYPE_STATION) + return 1; + + return ar->hw->conf.listen_interval; +} + static void ath10k_peer_assoc_h_basic(struct ath10k *ar, - struct ath10k_vif *arvif, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_bss_conf *bss_conf, struct wmi_peer_assoc_complete_arg *arg) { + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + lockdep_assert_held(&ar->conf_mutex); ether_addr_copy(arg->addr, sta->addr); arg->vdev_id = arvif->vdev_id; arg->peer_aid = sta->aid; arg->peer_flags |= WMI_PEER_AUTH; - - if (arvif->vdev_type == WMI_VDEV_TYPE_STA) - /* - * Seems FW have problems with Power Save in STA - * mode when we setup this parameter to high (eg. 5). - * Often we see that FW don't send NULL (with clean P flags) - * frame even there is info about buffered frames in beacons. - * Sometimes we have to wait more than 10 seconds before FW - * will wakeup. Often sending one ping from AP to our device - * just fail (more than 50%). - * - * Seems setting this FW parameter to 1 couse FW - * will check every beacon and will wakup immediately - * after detection buffered data. - */ - arg->peer_listen_intval = 1; - else - arg->peer_listen_intval = ar->hw->conf.listen_interval; - + arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif); arg->peer_num_spatial_streams = 1; - - /* - * The assoc capabilities are available only in managed mode. - */ - if (arvif->vdev_type == WMI_VDEV_TYPE_STA && bss_conf) - arg->peer_caps = bss_conf->assoc_capability; + arg->peer_caps = vif->bss_conf.assoc_capability; } static void ath10k_peer_assoc_h_crypto(struct ath10k *ar, - struct ath10k_vif *arvif, + struct ieee80211_vif *vif, struct wmi_peer_assoc_complete_arg *arg) { - struct ieee80211_vif *vif = arvif->vif; struct ieee80211_bss_conf *info = &vif->bss_conf; struct cfg80211_bss *bss; const u8 *rsnie = NULL; @@ -1361,11 +1355,12 @@ static void ath10k_peer_assoc_h_vht(struct ath10k *ar, } static void ath10k_peer_assoc_h_qos(struct ath10k *ar, - struct ath10k_vif *arvif, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_bss_conf *bss_conf, struct wmi_peer_assoc_complete_arg *arg) { + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + switch (arvif->vdev_type) { case WMI_VDEV_TYPE_AP: if (sta->wme) @@ -1377,7 +1372,7 @@ static void ath10k_peer_assoc_h_qos(struct ath10k *ar, } break; case WMI_VDEV_TYPE_STA: - if (bss_conf->qos) + if (vif->bss_conf.qos) arg->peer_flags |= WMI_PEER_QOS; break; default: @@ -1386,7 +1381,7 @@ static void ath10k_peer_assoc_h_qos(struct ath10k *ar, } static void ath10k_peer_assoc_h_phymode(struct ath10k *ar, - struct ath10k_vif *arvif, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct wmi_peer_assoc_complete_arg *arg) { @@ -1437,22 +1432,21 @@ static void ath10k_peer_assoc_h_phymode(struct ath10k *ar, } static int ath10k_peer_assoc_prepare(struct ath10k *ar, - struct ath10k_vif *arvif, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_bss_conf *bss_conf, struct wmi_peer_assoc_complete_arg *arg) { lockdep_assert_held(&ar->conf_mutex); memset(arg, 0, sizeof(*arg)); - ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, arg); - ath10k_peer_assoc_h_crypto(ar, arvif, arg); + ath10k_peer_assoc_h_basic(ar, vif, sta, arg); + ath10k_peer_assoc_h_crypto(ar, vif, arg); ath10k_peer_assoc_h_rates(ar, sta, arg); ath10k_peer_assoc_h_ht(ar, sta, arg); ath10k_peer_assoc_h_vht(ar, sta, arg); - ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, arg); - ath10k_peer_assoc_h_phymode(ar, arvif, sta, arg); + ath10k_peer_assoc_h_qos(ar, vif, sta, arg); + ath10k_peer_assoc_h_phymode(ar, vif, sta, arg); return 0; } @@ -1512,8 +1506,7 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw, * before calling ath10k_setup_peer_smps() which might sleep. */ ht_cap = ap_sta->ht_cap; - ret = ath10k_peer_assoc_prepare(ar, arvif, ap_sta, - bss_conf, &peer_arg); + ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg); if (ret) { ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n", bss_conf->bssid, arvif->vdev_id, ret); @@ -1596,15 +1589,18 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw, arvif->is_up = false; } -static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif, - struct ieee80211_sta *sta, bool reassoc) +static int ath10k_station_assoc(struct ath10k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + bool reassoc) { + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); struct wmi_peer_assoc_complete_arg peer_arg; int ret = 0; lockdep_assert_held(&ar->conf_mutex); - ret = ath10k_peer_assoc_prepare(ar, arvif, sta, NULL, &peer_arg); + ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg); if (ret) { ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n", sta->addr, arvif->vdev_id, ret); @@ -1653,9 +1649,11 @@ static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif, return ret; } -static int ath10k_station_disassoc(struct ath10k *ar, struct ath10k_vif *arvif, +static int ath10k_station_disassoc(struct ath10k *ar, + struct ieee80211_vif *vif, struct ieee80211_sta *sta) { + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); int ret = 0; lockdep_assert_held(&ar->conf_mutex); @@ -3497,7 +3495,7 @@ static void ath10k_sta_rc_update_wk(struct work_struct *wk) ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates\n", sta->addr); - err = ath10k_station_assoc(ar, arvif, sta, true); + err = ath10k_station_assoc(ar, arvif->vif, sta, true); if (err) ath10k_warn(ar, "failed to reassociate station: %pM\n", sta->addr); @@ -3583,7 +3581,7 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n", sta->addr); - ret = ath10k_station_assoc(ar, arvif, sta, false); + ret = ath10k_station_assoc(ar, vif, sta, false); if (ret) ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n", sta->addr, arvif->vdev_id, ret); @@ -3597,7 +3595,7 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n", sta->addr); - ret = ath10k_station_disassoc(ar, arvif, sta); + ret = ath10k_station_disassoc(ar, vif, sta); if (ret) ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n", sta->addr, arvif->vdev_id, ret); -- cgit v1.1 From b1ecde36adb0c488dd048aa267602803b65ccc9b Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Tue, 21 Oct 2014 10:10:29 +0300 Subject: ath10k: skip some commands on reassoc It doesn't make much sense to reconfigure peer completely upon reassociation. This will make it easier to have a more uniform association code across different modes. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 52 +++++++++++++++++++---------------- 1 file changed, 29 insertions(+), 23 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 39c4029..d7a2d6f 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1615,35 +1615,41 @@ static int ath10k_station_assoc(struct ath10k *ar, return ret; } - ret = ath10k_setup_peer_smps(ar, arvif, sta->addr, &sta->ht_cap); - if (ret) { - ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n", - arvif->vdev_id, ret); - return ret; - } - - if (!sta->wme && !reassoc) { - arvif->num_legacy_stations++; - ret = ath10k_recalc_rtscts_prot(arvif); + /* Re-assoc is run only to update supported rates for given station. It + * doesn't make much sense to reconfigure the peer completely. + */ + if (!reassoc) { + ret = ath10k_setup_peer_smps(ar, arvif, sta->addr, + &sta->ht_cap); if (ret) { - ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n", + ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n", arvif->vdev_id, ret); return ret; } - } - ret = ath10k_install_peer_wep_keys(arvif, sta->addr); - if (ret) { - ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n", - arvif->vdev_id, ret); - return ret; - } + ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta); + if (ret) { + ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n", + sta->addr, arvif->vdev_id, ret); + return ret; + } - ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta); - if (ret) { - ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n", - sta->addr, arvif->vdev_id, ret); - return ret; + if (!sta->wme) { + arvif->num_legacy_stations++; + ret = ath10k_recalc_rtscts_prot(arvif); + if (ret) { + ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + ret = ath10k_install_peer_wep_keys(arvif, sta->addr); + if (ret) { + ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } } return ret; -- cgit v1.1 From 077efc8c42e8c35870946fc8d2452b70e9a13fba Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Tue, 21 Oct 2014 10:10:29 +0300 Subject: ath10k: clean up sta auth/assoc code The code can be symmetrical so make it so. This makes it easier to understand and work with. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 121 ++++++++++++---------------------- 1 file changed, 42 insertions(+), 79 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index d7a2d6f..78726a9 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1492,6 +1492,9 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw, lockdep_assert_held(&ar->conf_mutex); + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n", + arvif->vdev_id, arvif->bssid, arvif->aid); + rcu_read_lock(); ap_sta = ieee80211_find_sta(vif, bss_conf->bssid); @@ -1534,6 +1537,8 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw, "mac vdev %d up (associated) bssid %pM aid %d\n", arvif->vdev_id, bss_conf->bssid, bss_conf->aid); + WARN_ON(arvif->is_up); + arvif->aid = bss_conf->aid; ether_addr_copy(arvif->bssid, bss_conf->bssid); @@ -1547,9 +1552,6 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw, arvif->is_up = true; } -/* - * FIXME: flush TIDs - */ static void ath10k_bss_disassoc(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { @@ -1559,33 +1561,15 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw, lockdep_assert_held(&ar->conf_mutex); - /* - * For some reason, calling VDEV-DOWN before VDEV-STOP - * makes the FW to send frames via HTT after disassociation. - * No idea why this happens, even though VDEV-DOWN is supposed - * to be analogous to link down, so just stop the VDEV. - */ - ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d stop (disassociated\n", - arvif->vdev_id); - - /* FIXME: check return value */ - ret = ath10k_vdev_stop(arvif); - - /* - * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and - * report beacons from previously associated network through HTT. - * This in turn would spam mac80211 WARN_ON if we bring down all - * interfaces as it expects there is no rx when no interface is - * running. - */ - ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d down\n", arvif->vdev_id); + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n", + arvif->vdev_id, arvif->bssid); - /* FIXME: why don't we print error if wmi call fails? */ ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath10k_warn(ar, "faield to down vdev %i: %d\n", + arvif->vdev_id, ret); arvif->def_wep_key_idx = 0; - - arvif->is_started = false; arvif->is_up = false; } @@ -3116,54 +3100,8 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw, arvif->u.ap.hidden_ssid = info->hidden_ssid; } - /* - * Firmware manages AP self-peer internally so make sure to not create - * it in driver. Otherwise AP self-peer deletion may timeout later. - */ - if (changed & BSS_CHANGED_BSSID && - vif->type != NL80211_IFTYPE_AP) { - if (!is_zero_ether_addr(info->bssid)) { - if (vif->type == NL80211_IFTYPE_STATION) { - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac vdev %d create peer %pM\n", - arvif->vdev_id, info->bssid); - - ret = ath10k_peer_create(ar, arvif->vdev_id, - info->bssid); - if (ret) - ath10k_warn(ar, "failed to add peer %pM for vdev %d when changing bssid: %i\n", - info->bssid, arvif->vdev_id, - ret); - /* - * this is never erased as we it for crypto key - * clearing; this is FW requirement - */ - ether_addr_copy(arvif->bssid, info->bssid); - - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac vdev %d start %pM\n", - arvif->vdev_id, info->bssid); - - ret = ath10k_vdev_start(arvif); - if (ret) { - ath10k_warn(ar, "failed to start vdev %i: %d\n", - arvif->vdev_id, ret); - goto exit; - } - - arvif->is_started = true; - } - - /* - * Mac80211 does not keep IBSS bssid when leaving IBSS, - * so driver need to store it. It is needed when leaving - * IBSS in order to remove BSSID peer. - */ - if (vif->type == NL80211_IFTYPE_ADHOC) - memcpy(arvif->bssid, info->bssid, - ETH_ALEN); - } - } + if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid)) + ether_addr_copy(arvif->bssid, info->bssid); if (changed & BSS_CHANGED_BEACON_ENABLED) ath10k_control_beaconing(arvif, info); @@ -3225,10 +3163,11 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw, ath10k_monitor_stop(ar); ath10k_bss_assoc(hw, vif, info); ath10k_monitor_recalc(ar); + } else { + ath10k_bss_disassoc(hw, vif); } } -exit: mutex_unlock(&ar->conf_mutex); } @@ -3537,8 +3476,7 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, mutex_lock(&ar->conf_mutex); if (old_state == IEEE80211_STA_NOTEXIST && - new_state == IEEE80211_STA_NONE && - vif->type != NL80211_IFTYPE_STATION) { + new_state == IEEE80211_STA_NONE) { /* * New station addition. */ @@ -3562,6 +3500,21 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, if (ret) ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n", sta->addr, arvif->vdev_id, ret); + + if (vif->type == NL80211_IFTYPE_STATION) { + WARN_ON(arvif->is_started); + + ret = ath10k_vdev_start(arvif); + if (ret) { + ath10k_warn(ar, "failed to start vdev %i: %d\n", + arvif->vdev_id, ret); + WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id, + sta->addr)); + goto exit; + } + + arvif->is_started = true; + } } else if ((old_state == IEEE80211_STA_NONE && new_state == IEEE80211_STA_NOTEXIST)) { /* @@ -3570,13 +3523,23 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d peer delete %pM (sta gone)\n", arvif->vdev_id, sta->addr); + + if (vif->type == NL80211_IFTYPE_STATION) { + WARN_ON(!arvif->is_started); + + ret = ath10k_vdev_stop(arvif); + if (ret) + ath10k_warn(ar, "failed to stop vdev %i: %d\n", + arvif->vdev_id, ret); + + arvif->is_started = false; + } + ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr); if (ret) ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n", sta->addr, arvif->vdev_id, ret); - if (vif->type == NL80211_IFTYPE_STATION) - ath10k_bss_disassoc(hw, vif); } else if (old_state == IEEE80211_STA_AUTH && new_state == IEEE80211_STA_ASSOC && (vif->type == NL80211_IFTYPE_AP || -- cgit v1.1 From 7d9d5587c2e385b7a6c86547618e8adb87171e42 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Tue, 21 Oct 2014 10:40:15 +0300 Subject: ath10k: use bss_info as txpower source This simply changes the source for txpower setup. It does not make ath10k use different txpower values for different vifs. This will make it easier to implement chanctx in ath10k in the future. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 94 +++++++++++++++++++++++++++-------- 1 file changed, 74 insertions(+), 20 deletions(-) (limited to 'drivers/net/wireless/ath/ath10k/mac.c') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 78726a9..caaa369 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -2676,12 +2676,68 @@ static void ath10k_config_chan(struct ath10k *ar) ath10k_monitor_recalc(ar); } +static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower) +{ + int ret; + u32 param; + + lockdep_assert_held(&ar->conf_mutex); + + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower); + + param = ar->wmi.pdev_param->txpower_limit2g; + ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2); + if (ret) { + ath10k_warn(ar, "failed to set 2g txpower %d: %d\n", + txpower, ret); + return ret; + } + + param = ar->wmi.pdev_param->txpower_limit5g; + ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2); + if (ret) { + ath10k_warn(ar, "failed to set 5g txpower %d: %d\n", + txpower, ret); + return ret; + } + + return 0; +} + +static int ath10k_mac_txpower_recalc(struct ath10k *ar) +{ + struct ath10k_vif *arvif; + int ret, txpower = -1; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + WARN_ON(arvif->txpower < 0); + + if (txpower == -1) + txpower = arvif->txpower; + else + txpower = min(txpower, arvif->txpower); + } + + if (WARN_ON(txpower == -1)) + return -EINVAL; + + ret = ath10k_mac_txpower_setup(ar, txpower); + if (ret) { + ath10k_warn(ar, "failed to setup tx power %d: %d\n", + txpower, ret); + return ret; + } + + return 0; +} + static int ath10k_config(struct ieee80211_hw *hw, u32 changed) { struct ath10k *ar = hw->priv; struct ieee80211_conf *conf = &hw->conf; int ret = 0; - u32 param; mutex_lock(&ar->conf_mutex); @@ -2705,25 +2761,6 @@ static int ath10k_config(struct ieee80211_hw *hw, u32 changed) } } - if (changed & IEEE80211_CONF_CHANGE_POWER) { - ath10k_dbg(ar, ATH10K_DBG_MAC, "mac config power %d\n", - hw->conf.power_level); - - param = ar->wmi.pdev_param->txpower_limit2g; - ret = ath10k_wmi_pdev_set_param(ar, param, - hw->conf.power_level * 2); - if (ret) - ath10k_warn(ar, "failed to set 2g txpower %d: %d\n", - hw->conf.power_level, ret); - - param = ar->wmi.pdev_param->txpower_limit5g; - ret = ath10k_wmi_pdev_set_param(ar, param, - hw->conf.power_level * 2); - if (ret) - ath10k_warn(ar, "failed to set 5g txpower %d: %d\n", - hw->conf.power_level, ret); - } - if (changed & IEEE80211_CONF_CHANGE_PS) ath10k_config_ps(ar); @@ -2932,6 +2969,13 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, goto err_peer_delete; } + arvif->txpower = vif->bss_conf.txpower; + ret = ath10k_mac_txpower_recalc(ar); + if (ret) { + ath10k_warn(ar, "failed to recalc tx power: %d\n", ret); + goto err_peer_delete; + } + mutex_unlock(&ar->conf_mutex); return 0; @@ -3168,6 +3212,16 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw, } } + if (changed & BSS_CHANGED_TXPOWER) { + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n", + arvif->vdev_id, info->txpower); + + arvif->txpower = info->txpower; + ret = ath10k_mac_txpower_recalc(ar); + if (ret) + ath10k_warn(ar, "failed to recalc tx power: %d\n", ret); + } + mutex_unlock(&ar->conf_mutex); } -- cgit v1.1