From 500ff9f9389dcf4836e2f3b0cd355d16b7860e74 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Tue, 31 Mar 2015 10:26:21 +0000 Subject: [PATCH] ath10k: implement chanctx API The chanctx API will allow ath10k to support multi-channel operation. Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.h | 10 + drivers/net/wireless/ath/ath10k/htt_rx.c | 100 +++- drivers/net/wireless/ath/ath10k/mac.c | 699 +++++++++++++++++++---- drivers/net/wireless/ath/ath10k/mac.h | 2 + drivers/net/wireless/ath/ath10k/wmi.c | 13 +- 5 files changed, 699 insertions(+), 125 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 8055b8f56369..9bf652b70c40 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -284,6 +284,15 @@ struct ath10k_sta { #endif }; +struct ath10k_chanctx { + /* Used to story copy of chanctx_conf to avoid inconsistencies. Ideally + * mac80211 should allow some sort of explicit locking to guarantee + * that the publicly available chanctx_conf can be accessed safely at + * all times. + */ + struct ieee80211_chanctx_conf conf; +}; + #define ATH10K_VDEV_SETUP_TIMEOUT_HZ (5*HZ) enum ath10k_beacon_state { @@ -607,6 +616,7 @@ struct ath10k { struct cfg80211_chan_def chandef; unsigned long long free_vdev_map; + struct ath10k_vif *monitor_arvif; bool monitor; int monitor_vdev_id; bool monitor_started; diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 157dc8dd2ee0..d5395bc7dec7 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -723,8 +723,87 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar, } } +static struct ieee80211_channel * +ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd) +{ + struct ath10k_peer *peer; + struct ath10k_vif *arvif; + struct cfg80211_chan_def def; + u16 peer_id; + + lockdep_assert_held(&ar->data_lock); + + if (!rxd) + return NULL; + + if (rxd->attention.flags & + __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID)) + return NULL; + + if (!(rxd->msdu_end.info0 & + __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU))) + return NULL; + + peer_id = MS(__le32_to_cpu(rxd->mpdu_start.info0), + RX_MPDU_START_INFO0_PEER_IDX); + + peer = ath10k_peer_find_by_id(ar, peer_id); + if (!peer) + return NULL; + + arvif = ath10k_get_arvif(ar, peer->vdev_id); + if (WARN_ON_ONCE(!arvif)) + return NULL; + + if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def))) + return NULL; + + return def.chan; +} + +static struct ieee80211_channel * +ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id) +{ + struct ath10k_vif *arvif; + struct cfg80211_chan_def def; + + lockdep_assert_held(&ar->data_lock); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_id == vdev_id && + ath10k_mac_vif_chan(arvif->vif, &def) == 0) + return def.chan; + } + + return NULL; +} + +static void +ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, + void *data) +{ + struct cfg80211_chan_def *def = data; + + *def = conf->def; +} + +static struct ieee80211_channel * +ath10k_htt_rx_h_any_channel(struct ath10k *ar) +{ + struct cfg80211_chan_def def = {}; + + ieee80211_iter_chan_contexts_atomic(ar->hw, + ath10k_htt_rx_h_any_chan_iter, + &def); + + return def.chan; +} + static bool ath10k_htt_rx_h_channel(struct ath10k *ar, - struct ieee80211_rx_status *status) + struct ieee80211_rx_status *status, + struct htt_rx_desc *rxd, + u32 vdev_id) { struct ieee80211_channel *ch; @@ -732,6 +811,12 @@ static bool ath10k_htt_rx_h_channel(struct ath10k *ar, ch = ar->scan_channel; if (!ch) ch = ar->rx_channel; + if (!ch) + ch = ath10k_htt_rx_h_peer_channel(ar, rxd); + if (!ch) + ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id); + if (!ch) + ch = ath10k_htt_rx_h_any_channel(ar); spin_unlock_bh(&ar->data_lock); if (!ch) @@ -769,7 +854,8 @@ static void ath10k_htt_rx_h_mactime(struct ath10k *ar, static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, struct sk_buff_head *amsdu, - struct ieee80211_rx_status *status) + struct ieee80211_rx_status *status, + u32 vdev_id) { struct sk_buff *first; struct htt_rx_desc *rxd; @@ -801,7 +887,7 @@ static void ath10k_htt_rx_h_ppdu(struct ath10k *ar, status->flag |= RX_FLAG_NO_SIGNAL_VAL; ath10k_htt_rx_h_signal(ar, status, rxd); - ath10k_htt_rx_h_channel(ar, status); + ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id); ath10k_htt_rx_h_rates(ar, status, rxd); } @@ -1472,7 +1558,7 @@ static void ath10k_htt_rx_handler(struct ath10k_htt *htt, break; } - ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status); + ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); ath10k_htt_rx_h_unchain(ar, &amsdu, ret > 0); ath10k_htt_rx_h_filter(ar, &amsdu, rx_status); ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status); @@ -1519,7 +1605,7 @@ static void ath10k_htt_rx_frag_handler(struct ath10k_htt *htt, return; } - ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status); + ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff); ath10k_htt_rx_h_filter(ar, &amsdu, rx_status); ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status); ath10k_htt_rx_h_deliver(ar, &amsdu, rx_status); @@ -1746,7 +1832,7 @@ static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar, status->flag |= RX_FLAG_NO_SIGNAL_VAL; ath10k_htt_rx_h_rx_offload_prot(status, msdu); - ath10k_htt_rx_h_channel(ar, status); + ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id); ath10k_process_rx(ar, status, msdu); } } @@ -1819,7 +1905,7 @@ static void ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) * better to report something than nothing though. This * should still give an idea about rx rate to the user. */ - ath10k_htt_rx_h_ppdu(ar, &amsdu, status); + ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); ath10k_htt_rx_h_filter(ar, &amsdu, status); ath10k_htt_rx_h_mpdu(ar, &amsdu, status); ath10k_htt_rx_h_deliver(ar, &amsdu, status); diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 8df20e9c1cec..200752750181 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -518,6 +518,54 @@ static u8 ath10k_parse_mpdudensity(u8 mpdudensity) } } +int ath10k_mac_vif_chan(struct ieee80211_vif *vif, + struct cfg80211_chan_def *def) +{ + struct ieee80211_chanctx_conf *conf; + + rcu_read_lock(); + conf = rcu_dereference(vif->chanctx_conf); + if (!conf) { + rcu_read_unlock(); + return -ENOENT; + } + + *def = conf->def; + rcu_read_unlock(); + + return 0; +} + +static void ath10k_mac_num_chanctxs_iter(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, + void *data) +{ + int *num = data; + + (*num)++; +} + +static int ath10k_mac_num_chanctxs(struct ath10k *ar) +{ + int num = 0; + + ieee80211_iter_chan_contexts_atomic(ar->hw, + ath10k_mac_num_chanctxs_iter, + &num); + + return num; +} + +static void +ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, + void *data) +{ + struct cfg80211_chan_def **def = data; + + *def = &conf->def; +} + static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr, enum wmi_peer_type peer_type) { @@ -765,13 +813,21 @@ static inline int ath10k_vdev_setup_sync(struct ath10k *ar) static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id) { - struct cfg80211_chan_def *chandef = &ar->chandef; + struct cfg80211_chan_def *chandef = NULL; struct ieee80211_channel *channel = chandef->chan; struct wmi_vdev_start_request_arg arg = {}; int ret = 0; lockdep_assert_held(&ar->conf_mutex); + ieee80211_iter_chan_contexts_atomic(ar->hw, + ath10k_mac_get_any_chandef_iter, + &chandef); + if (WARN_ON_ONCE(!chandef)) + return -ENOENT; + + channel = chandef->chan; + arg.vdev_id = vdev_id; arg.channel.freq = channel->center_freq; arg.channel.band_center_freq1 = chandef->center_freq1; @@ -972,27 +1028,79 @@ static bool ath10k_mac_should_disable_promisc(struct ath10k *ar) return true; } +static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar) +{ + int num_ctx; + + /* At least one chanctx is required to derive a channel to start + * monitor vdev on. + */ + num_ctx = ath10k_mac_num_chanctxs(ar); + if (num_ctx == 0) + return false; + + /* If there's already an existing special monitor interface then don't + * bother creating another monitor vdev. + */ + if (ar->monitor_arvif) + return false; + + return ar->monitor || + !ath10k_mac_should_disable_promisc(ar) || + test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags); +} + +static bool ath10k_mac_monitor_vdev_is_allowed(struct ath10k *ar) +{ + int num_ctx; + + num_ctx = ath10k_mac_num_chanctxs(ar); + + /* FIXME: Current interface combinations and cfg80211/mac80211 code + * shouldn't allow this but make sure to prevent handling the following + * case anyway since multi-channel DFS hasn't been tested at all. + */ + if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags) && num_ctx > 1) + return false; + + return true; +} + static int ath10k_monitor_recalc(struct ath10k *ar) { - bool should_start; + bool needed; + bool allowed; + int ret; lockdep_assert_held(&ar->conf_mutex); - should_start = ar->monitor || - !ath10k_mac_should_disable_promisc(ar) || - test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags); + needed = ath10k_mac_monitor_vdev_is_needed(ar); + allowed = ath10k_mac_monitor_vdev_is_allowed(ar); ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac monitor recalc started? %d should? %d\n", - ar->monitor_started, should_start); + "mac monitor recalc started? %d needed? %d allowed? %d\n", + ar->monitor_started, needed, allowed); + + if (WARN_ON(needed && !allowed)) { + if (ar->monitor_started) { + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopping disallowed monitor\n"); + + ret = ath10k_monitor_stop(ar); + if (ret) + ath10k_warn(ar, "failed to stop disallowed monitor: %d\n", ret); + /* not serious */ + } - if (should_start == ar->monitor_started) + return -EPERM; + } + + if (needed == ar->monitor_started) return 0; - if (should_start) + if (needed) return ath10k_monitor_start(ar); - - return ath10k_monitor_stop(ar); + else + return ath10k_monitor_stop(ar); } static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif) @@ -1054,6 +1162,27 @@ static int ath10k_stop_cac(struct ath10k *ar) return 0; } +static void ath10k_mac_has_radar_iter(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *conf, + void *data) +{ + bool *ret = data; + + if (!*ret && conf->radar_enabled) + *ret = true; +} + +static bool ath10k_mac_has_radar_enabled(struct ath10k *ar) +{ + bool has_radar = false; + + ieee80211_iter_chan_contexts_atomic(ar->hw, + ath10k_mac_has_radar_iter, + &has_radar); + + return has_radar; +} + static void ath10k_recalc_radar_detection(struct ath10k *ar) { int ret; @@ -1062,7 +1191,7 @@ static void ath10k_recalc_radar_detection(struct ath10k *ar) ath10k_stop_cac(ar); - if (!ar->radar_enabled) + if (!ath10k_mac_has_radar_enabled(ar)) return; if (ar->num_started_vdevs > 0) @@ -1113,10 +1242,11 @@ static int ath10k_vdev_stop(struct ath10k_vif *arvif) return ret; } -static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart) +static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, + const struct cfg80211_chan_def *chandef, + bool restart) { struct ath10k *ar = arvif->ar; - struct cfg80211_chan_def *chandef = &ar->chandef; struct wmi_vdev_start_request_arg arg = {}; int ret = 0, ret2; @@ -1190,14 +1320,16 @@ static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart) return ret; } -static int ath10k_vdev_start(struct ath10k_vif *arvif) +static int ath10k_vdev_start(struct ath10k_vif *arvif, + const struct cfg80211_chan_def *def) { - return ath10k_vdev_start_restart(arvif, false); + return ath10k_vdev_start_restart(arvif, def, false); } -static int ath10k_vdev_restart(struct ath10k_vif *arvif) +static int ath10k_vdev_restart(struct ath10k_vif *arvif, + const struct cfg80211_chan_def *def) { - return ath10k_vdev_start_restart(arvif, true); + return ath10k_vdev_start_restart(arvif, def, true); } static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif, @@ -1344,6 +1476,80 @@ static int ath10k_mac_setup_prb_tmpl(struct ath10k_vif *arvif) return 0; } +static int ath10k_mac_vif_fix_hidden_ssid(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + struct cfg80211_chan_def def; + int ret; + + /* When originally vdev is started during assign_vif_chanctx() some + * information is missing, notably SSID. Firmware revisions with beacon + * offloading require the SSID to be provided during vdev (re)start to + * handle hidden SSID properly. + * + * Vdev restart must be done after vdev has been both started and + * upped. Otherwise some firmware revisions (at least 10.2) fail to + * deliver vdev restart response event causing timeouts during vdev + * syncing in ath10k. + * + * Note: The vdev down/up and template reinstallation could be skipped + * since only wmi-tlv firmware are known to have beacon offload and + * wmi-tlv doesn't seem to misbehave like 10.2 wrt vdev restart + * response delivery. It's probably more robust to keep it as is. + */ + if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) + return 0; + + if (WARN_ON(!arvif->is_started)) + return -EINVAL; + + if (WARN_ON(!arvif->is_up)) + return -EINVAL; + + if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def))) + return -EINVAL; + + ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) { + ath10k_warn(ar, "failed to bring down ap vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + /* Vdev down reset beacon & presp templates. Reinstall them. Otherwise + * firmware will crash upon vdev up. + */ + + ret = ath10k_mac_setup_bcn_tmpl(arvif); + if (ret) { + ath10k_warn(ar, "failed to update beacon template: %d\n", ret); + return ret; + } + + ret = ath10k_mac_setup_prb_tmpl(arvif); + if (ret) { + ath10k_warn(ar, "failed to update presp template: %d\n", ret); + return ret; + } + + ret = ath10k_vdev_restart(arvif, &def); + if (ret) { + ath10k_warn(ar, "failed to restart ap vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid, + arvif->bssid); + if (ret) { + ath10k_warn(ar, "failed to bring up ap vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + return 0; +} + static void ath10k_control_beaconing(struct ath10k_vif *arvif, struct ieee80211_bss_conf *info) { @@ -1353,9 +1559,11 @@ static void ath10k_control_beaconing(struct ath10k_vif *arvif, lockdep_assert_held(&arvif->ar->conf_mutex); if (!info->enable_beacon) { - ath10k_vdev_stop(arvif); + ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath10k_warn(ar, "failed to down vdev_id %i: %d\n", + arvif->vdev_id, ret); - arvif->is_started = false; arvif->is_up = false; spin_lock_bh(&arvif->ar->data_lock); @@ -1367,10 +1575,6 @@ static void ath10k_control_beaconing(struct ath10k_vif *arvif, arvif->tx_seq_no = 0x1000; - ret = ath10k_vdev_start(arvif); - if (ret) - return; - arvif->aid = 0; ether_addr_copy(arvif->bssid, info->bssid); @@ -1379,13 +1583,18 @@ static void ath10k_control_beaconing(struct ath10k_vif *arvif, if (ret) { ath10k_warn(ar, "failed to bring up vdev %d: %i\n", arvif->vdev_id, ret); - ath10k_vdev_stop(arvif); return; } - arvif->is_started = true; arvif->is_up = true; + ret = ath10k_mac_vif_fix_hidden_ssid(arvif); + if (ret) { + ath10k_warn(ar, "failed to fix hidden ssid for vdev %i, expect trouble: %d\n", + arvif->vdev_id, ret); + return; + } + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id); } @@ -1754,15 +1963,18 @@ static void ath10k_peer_assoc_h_crypto(struct ath10k *ar, struct wmi_peer_assoc_complete_arg *arg) { struct ieee80211_bss_conf *info = &vif->bss_conf; + struct cfg80211_chan_def def; struct cfg80211_bss *bss; const u8 *rsnie = NULL; const u8 *wpaie = NULL; lockdep_assert_held(&ar->conf_mutex); - bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan, - info->bssid, NULL, 0, IEEE80211_BSS_TYPE_ANY, - IEEE80211_PRIVACY_ANY); + if (WARN_ON(ath10k_mac_vif_chan(vif, &def))) + return; + + bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0, + IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); if (bss) { const struct cfg80211_bss_ies *ies; @@ -1792,10 +2004,12 @@ static void ath10k_peer_assoc_h_crypto(struct ath10k *ar, } static void ath10k_peer_assoc_h_rates(struct ath10k *ar, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct wmi_peer_assoc_complete_arg *arg) { struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates; + struct cfg80211_chan_def def; const struct ieee80211_supported_band *sband; const struct ieee80211_rate *rates; u32 ratemask; @@ -1804,8 +2018,11 @@ static void ath10k_peer_assoc_h_rates(struct ath10k *ar, lockdep_assert_held(&ar->conf_mutex); - sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band]; - ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band]; + if (WARN_ON(ath10k_mac_vif_chan(vif, &def))) + return; + + sband = ar->hw->wiphy->bands[def.chan->band]; + ratemask = sta->supp_rates[def.chan->band]; rates = sband->bitrates; rateset->num_rates = 0; @@ -1971,18 +2188,23 @@ static int ath10k_peer_assoc_qos_ap(struct ath10k *ar, } static void ath10k_peer_assoc_h_vht(struct ath10k *ar, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct wmi_peer_assoc_complete_arg *arg) { const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; + struct cfg80211_chan_def def; u8 ampdu_factor; + if (WARN_ON(ath10k_mac_vif_chan(vif, &def))) + return; + if (!vht_cap->vht_supported) return; arg->peer_flags |= WMI_PEER_VHT; - if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) + if (def.chan->band == IEEE80211_BAND_2GHZ) arg->peer_flags |= WMI_PEER_VHT_2G; arg->peer_vht_caps = vht_cap->cap; @@ -2059,9 +2281,13 @@ static void ath10k_peer_assoc_h_phymode(struct ath10k *ar, struct ieee80211_sta *sta, struct wmi_peer_assoc_complete_arg *arg) { + struct cfg80211_chan_def def; enum wmi_phy_mode phymode = MODE_UNKNOWN; - switch (ar->hw->conf.chandef.chan->band) { + if (WARN_ON(ath10k_mac_vif_chan(vif, &def))) + return; + + switch (def.chan->band) { case IEEE80211_BAND_2GHZ: if (sta->vht_cap.vht_supported) { if (sta->bandwidth == IEEE80211_STA_RX_BW_40) @@ -2123,9 +2349,9 @@ static int ath10k_peer_assoc_prepare(struct ath10k *ar, 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_rates(ar, vif, sta, arg); ath10k_peer_assoc_h_ht(ar, sta, arg); - ath10k_peer_assoc_h_vht(ar, sta, arg); + ath10k_peer_assoc_h_vht(ar, vif, sta, arg); ath10k_peer_assoc_h_qos(ar, vif, sta, arg); ath10k_peer_assoc_h_phymode(ar, vif, sta, arg); @@ -3211,6 +3437,7 @@ void ath10k_halt(struct ath10k *ar) clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags); ar->filter_flags = 0; ar->monitor = false; + ar->monitor_arvif = NULL; if (ar->monitor_started) ath10k_monitor_stop(ar); @@ -3452,42 +3679,15 @@ static int ath10k_config_ps(struct ath10k *ar) return ret; } -static const char *chandef_get_width(enum nl80211_chan_width width) -{ - switch (width) { - case NL80211_CHAN_WIDTH_20_NOHT: - return "20 (noht)"; - case NL80211_CHAN_WIDTH_20: - return "20"; - case NL80211_CHAN_WIDTH_40: - return "40"; - case NL80211_CHAN_WIDTH_80: - return "80"; - case NL80211_CHAN_WIDTH_80P80: - return "80+80"; - case NL80211_CHAN_WIDTH_160: - return "160"; - case NL80211_CHAN_WIDTH_5: - return "5"; - case NL80211_CHAN_WIDTH_10: - return "10"; - } - return "?"; -} - -static void ath10k_config_chan(struct ath10k *ar) +static void ath10k_mac_chan_reconfigure(struct ath10k *ar) { struct ath10k_vif *arvif; + struct cfg80211_chan_def def; int ret; lockdep_assert_held(&ar->conf_mutex); - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac config channel to %dMHz (cf1 %dMHz cf2 %dMHz width %s)\n", - ar->chandef.chan->center_freq, - ar->chandef.center_freq1, - ar->chandef.center_freq2, - chandef_get_width(ar->chandef.width)); + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac chan reconfigure\n"); /* First stop monitor interface. Some FW versions crash if there's a * lone monitor interface. */ @@ -3531,7 +3731,10 @@ static void ath10k_config_chan(struct ath10k *ar) ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n", ret); - ret = ath10k_vdev_restart(arvif); + if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def))) + continue; + + ret = ath10k_vdev_restart(arvif, &def); if (ret) { ath10k_warn(ar, "failed to restart vdev %d: %d\n", arvif->vdev_id, ret); @@ -3618,26 +3821,6 @@ static int ath10k_config(struct ieee80211_hw *hw, u32 changed) mutex_lock(&ar->conf_mutex); - if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac config channel %dMHz flags 0x%x radar %d\n", - conf->chandef.chan->center_freq, - conf->chandef.chan->flags, - conf->radar_enabled); - - spin_lock_bh(&ar->data_lock); - ar->rx_channel = conf->chandef.chan; - spin_unlock_bh(&ar->data_lock); - - ar->radar_enabled = conf->radar_enabled; - ath10k_recalc_radar_detection(ar); - - if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) { - ar->chandef = conf->chandef; - ath10k_config_chan(ar); - } - } - if (changed & IEEE80211_CONF_CHANGE_PS) ath10k_config_ps(ar); @@ -3881,6 +4064,15 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, goto err_peer_delete; } + if (vif->type == NL80211_IFTYPE_MONITOR) { + ar->monitor_arvif = arvif; + ret = ath10k_monitor_recalc(ar); + if (ret) { + ath10k_warn(ar, "failed to recalc monitor: %d\n", ret); + goto err_peer_delete; + } + } + mutex_unlock(&ar->conf_mutex); return 0; @@ -3964,6 +4156,13 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw, ath10k_peer_cleanup(ar, arvif->vdev_id); + if (vif->type == NL80211_IFTYPE_MONITOR) { + ar->monitor_arvif = NULL; + ret = ath10k_monitor_recalc(ar); + if (ret) + ath10k_warn(ar, "failed to recalc monitor: %d\n", ret); + } + mutex_unlock(&ar->conf_mutex); } @@ -4684,23 +4883,6 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, goto exit; } - if (vif->type == NL80211_IFTYPE_STATION && - !sta->tdls) { - 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)); - ath10k_mac_dec_num_stations(arvif, sta); - goto exit; - } - - arvif->is_started = true; - } - if (!sta->tdls) goto exit; @@ -4756,18 +4938,6 @@ static int ath10k_sta_state(struct ieee80211_hw *hw, "mac vdev %d peer delete %pM (sta gone)\n", arvif->vdev_id, sta->addr); - if (vif->type == NL80211_IFTYPE_STATION && - !sta->tdls) { - 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", @@ -5534,15 +5704,21 @@ static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw, const struct cfg80211_bitrate_mask *mask) { struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct cfg80211_chan_def def; struct ath10k *ar = arvif->ar; - enum ieee80211_band band = ar->hw->conf.chandef.chan->band; + enum ieee80211_band band; u8 fixed_rate = WMI_FIXED_RATE_NONE; u8 fixed_nss = ar->num_rf_chains; u8 force_sgi; + if (ath10k_mac_vif_chan(vif, &def)) + return -EPERM; + if (ar->cfg_tx_chainmask) fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask); + band = def.chan->band; + force_sgi = mask->control[band].gi; if (force_sgi == NL80211_TXRATE_FORCE_LGI) return -EINVAL; @@ -5679,6 +5855,286 @@ static int ath10k_ampdu_action(struct ieee80211_hw *hw, return -EINVAL; } +static void +ath10k_mac_update_rx_channel(struct ath10k *ar) +{ + struct cfg80211_chan_def *def = NULL; + + /* Both locks are required because ar->rx_channel is modified. This + * allows readers to hold either lock. + */ + lockdep_assert_held(&ar->conf_mutex); + lockdep_assert_held(&ar->data_lock); + + /* FIXME: Sort of an optimization and a workaround. Peers and vifs are + * on a linked list now. Doing a lookup peer -> vif -> chanctx for each + * ppdu on Rx may reduce performance on low-end systems. It should be + * possible to make tables/hashmaps to speed the lookup up (be vary of + * cpu data cache lines though regarding sizes) but to keep the initial + * implementation simple and less intrusive fallback to the slow lookup + * only for multi-channel cases. Single-channel cases will remain to + * use the old channel derival and thus performance should not be + * affected much. + */ + rcu_read_lock(); + if (ath10k_mac_num_chanctxs(ar) == 1) { + ieee80211_iter_chan_contexts_atomic(ar->hw, + ath10k_mac_get_any_chandef_iter, + &def); + ar->rx_channel = def->chan; + } else { + ar->rx_channel = NULL; + } + rcu_read_unlock(); +} + +static void +ath10k_mac_chan_ctx_init(struct ath10k *ar, + struct ath10k_chanctx *arctx, + struct ieee80211_chanctx_conf *conf) +{ + lockdep_assert_held(&ar->conf_mutex); + lockdep_assert_held(&ar->data_lock); + + memset(arctx, 0, sizeof(*arctx)); + + arctx->conf = *conf; +} + +static int +ath10k_mac_op_add_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx) +{ + struct ath10k *ar = hw->priv; + struct ath10k_chanctx *arctx = (void *)ctx->drv_priv; + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx add freq %hu width %d ptr %p\n", + ctx->def.chan->center_freq, ctx->def.width, ctx); + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + ath10k_mac_chan_ctx_init(ar, arctx, ctx); + ath10k_mac_update_rx_channel(ar); + spin_unlock_bh(&ar->data_lock); + + ath10k_recalc_radar_detection(ar); + ath10k_monitor_recalc(ar); + + mutex_unlock(&ar->conf_mutex); + + return 0; +} + +static void +ath10k_mac_op_remove_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx) +{ + struct ath10k *ar = hw->priv; + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx remove freq %hu width %d ptr %p\n", + ctx->def.chan->center_freq, ctx->def.width, ctx); + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + ath10k_mac_update_rx_channel(ar); + spin_unlock_bh(&ar->data_lock); + + ath10k_recalc_radar_detection(ar); + ath10k_monitor_recalc(ar); + + mutex_unlock(&ar->conf_mutex); +} + +static void +ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx, + u32 changed) +{ + struct ath10k *ar = hw->priv; + struct ath10k_chanctx *arctx = (void *)ctx->drv_priv; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx change freq %hu->%hu width %d->%d ptr %p changed %x\n", + arctx->conf.def.chan->center_freq, + ctx->def.chan->center_freq, + arctx->conf.def.width, ctx->def.width, + ctx, changed); + + /* This shouldn't really happen because channel switching should use + * switch_vif_chanctx(). + */ + if (WARN_ON(changed & IEEE80211_CHANCTX_CHANGE_CHANNEL)) + goto unlock; + + spin_lock_bh(&ar->data_lock); + arctx->conf = *ctx; + spin_unlock_bh(&ar->data_lock); + + ath10k_recalc_radar_detection(ar); + + /* FIXME: How to configure Rx chains properly? */ + + /* No other actions are actually necessary. Firmware maintains channel + * definitions per vdev internally and there's no host-side channel + * context abstraction to configure, e.g. channel width. + */ + +unlock: + mutex_unlock(&ar->conf_mutex); +} + +static int +ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *ctx) +{ + struct ath10k *ar = hw->priv; + struct ath10k_chanctx *arctx = (void *)ctx->drv_priv; + struct ath10k_vif *arvif = (void *)vif->drv_priv; + int ret; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx assign ptr %p vdev_id %i\n", + ctx, arvif->vdev_id); + + if (WARN_ON(arvif->is_started)) { + mutex_unlock(&ar->conf_mutex); + return -EBUSY; + } + + ret = ath10k_vdev_start(arvif, &arctx->conf.def); + if (ret) { + ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n", + arvif->vdev_id, vif->addr, + arctx->conf.def.chan->center_freq, ret); + goto err; + } + + arvif->is_started = true; + + if (vif->type == NL80211_IFTYPE_MONITOR) { + ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, 0, vif->addr); + if (ret) { + ath10k_warn(ar, "failed to up monitor vdev %i: %d\n", + arvif->vdev_id, ret); + goto err_stop; + } + + arvif->is_up = true; + } + + mutex_unlock(&ar->conf_mutex); + return 0; + +err_stop: + ath10k_vdev_stop(arvif); + arvif->is_started = false; + +err: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static void +ath10k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_chanctx_conf *ctx) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = (void *)vif->drv_priv; + int ret; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx unassign ptr %p vdev_id %i\n", + ctx, arvif->vdev_id); + + WARN_ON(!arvif->is_started); + + if (vif->type == NL80211_IFTYPE_MONITOR) { + WARN_ON(!arvif->is_up); + + ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath10k_warn(ar, "failed to down monitor vdev %i: %d\n", + arvif->vdev_id, ret); + + arvif->is_up = false; + } + + 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; + + mutex_unlock(&ar->conf_mutex); +} + +static int +ath10k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif_chanctx_switch *vifs, + int n_vifs, + enum ieee80211_chanctx_switch_mode mode) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif; + struct ath10k_chanctx *arctx_new, *arctx_old; + int i; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx switch n_vifs %d mode %d\n", + n_vifs, mode); + + spin_lock_bh(&ar->data_lock); + for (i = 0; i < n_vifs; i++) { + arvif = ath10k_vif_to_arvif(vifs[i].vif); + arctx_new = (void *)vifs[i].new_ctx->drv_priv; + arctx_old = (void *)vifs[i].old_ctx->drv_priv; + + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac chanctx switch vdev_id %i freq %hu->%hu width %d->%d ptr %p->%p\n", + arvif->vdev_id, + vifs[i].old_ctx->def.chan->center_freq, + vifs[i].new_ctx->def.chan->center_freq, + vifs[i].old_ctx->def.width, + vifs[i].new_ctx->def.width, + arctx_old, arctx_new); + + if (mode == CHANCTX_SWMODE_SWAP_CONTEXTS) { + ath10k_mac_chan_ctx_init(ar, arctx_new, + vifs[i].new_ctx); + } + + arctx_new->conf = *vifs[i].new_ctx; + + /* FIXME: ath10k_mac_chan_reconfigure() uses current, i.e. not + * yet updated chanctx_conf pointer. + */ + arctx_old->conf = *vifs[i].new_ctx; + } + ath10k_mac_update_rx_channel(ar); + spin_unlock_bh(&ar->data_lock); + + /* FIXME: Reconfigure only affected vifs */ + ath10k_mac_chan_reconfigure(ar); + + mutex_unlock(&ar->conf_mutex); + return 0; +} + static const struct ieee80211_ops ath10k_ops = { .tx = ath10k_tx, .start = ath10k_start, @@ -5710,6 +6166,12 @@ static const struct ieee80211_ops ath10k_ops = { .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, + .add_chanctx = ath10k_mac_op_add_chanctx, + .remove_chanctx = ath10k_mac_op_remove_chanctx, + .change_chanctx = ath10k_mac_op_change_chanctx, + .assign_vif_chanctx = ath10k_mac_op_assign_vif_chanctx, + .unassign_vif_chanctx = ath10k_mac_op_unassign_vif_chanctx, + .switch_vif_chanctx = ath10k_mac_op_switch_vif_chanctx, CFG80211_TESTMODE_CMD(ath10k_tm_cmd) @@ -6083,7 +6545,9 @@ int ath10k_mac_register(struct ath10k *ar) IEEE80211_HW_AP_LINK_PS | IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_SW_CRYPTO_CONTROL | - IEEE80211_HW_CONNECTION_MONITOR; + IEEE80211_HW_CONNECTION_MONITOR | + IEEE80211_HW_WANT_MONITOR_VIF | + IEEE80211_HW_CHANCTX_STA_CSA; ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS; @@ -6100,6 +6564,7 @@ int ath10k_mac_register(struct ath10k *ar) ar->hw->vif_data_size = sizeof(struct ath10k_vif); ar->hw->sta_data_size = sizeof(struct ath10k_sta); + ar->hw->chanctx_data_size = sizeof(struct ath10k_chanctx); ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL; diff --git a/drivers/net/wireless/ath/ath10k/mac.h b/drivers/net/wireless/ath/ath10k/mac.h index a381740b8fc8..b1e3653e5e20 100644 --- a/drivers/net/wireless/ath/ath10k/mac.h +++ b/drivers/net/wireless/ath/ath10k/mac.h @@ -53,6 +53,8 @@ void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif); void ath10k_drain_tx(struct ath10k *ar); bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr, u8 keyidx); +int ath10k_mac_vif_chan(struct ieee80211_vif *vif, + struct cfg80211_chan_def *def); void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb); void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id); diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 3ef41105b95c..9694cd0a0249 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -2425,6 +2425,7 @@ static void ath10k_dfs_radar_report(struct ath10k *ar, u64 tsf) { u32 reg0, reg1, tsf32l; + struct ieee80211_channel *ch; struct pulse_event pe; u64 tsf64; u8 rssi, width; @@ -2453,6 +2454,15 @@ static void ath10k_dfs_radar_report(struct ath10k *ar, if (!ar->dfs_detector) return; + spin_lock_bh(&ar->data_lock); + ch = ar->rx_channel; + spin_unlock_bh(&ar->data_lock); + + if (!ch) { + ath10k_warn(ar, "failed to derive channel for radar pulse, treating as radar\n"); + goto radar_detected; + } + /* report event to DFS pattern detector */ tsf32l = __le32_to_cpu(phyerr->tsf_timestamp); tsf64 = tsf & (~0xFFFFFFFFULL); @@ -2468,7 +2478,7 @@ static void ath10k_dfs_radar_report(struct ath10k *ar, rssi = 0; pe.ts = tsf64; - pe.freq = ar->hw->conf.chandef.chan->center_freq; + pe.freq = ch->center_freq; pe.width = width; pe.rssi = rssi; pe.chirp = (MS(reg0, RADAR_REPORT_REG0_PULSE_IS_CHIRP) != 0); @@ -2484,6 +2494,7 @@ static void ath10k_dfs_radar_report(struct ath10k *ar, return; } +radar_detected: ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs radar detected\n"); ATH10K_DFS_STAT_INC(ar, radar_detected); -- 2.20.1