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[31.1.134.151]) by mx.google.com with ESMTPSA id hz9sm22687008wjb.17.2015.02.16.04.35.57 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 16 Feb 2015 04:35:57 -0800 (PST) From: Michal Kazior To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, Michal Kazior Subject: [PATCH v2] ath10k: fix AP/IBSS CSA with template based fw Date: Mon, 16 Feb 2015 13:34:54 +0100 Message-Id: <1424090094-28164-1-git-send-email-michal.kazior@tieto.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1423749198-11346-1-git-send-email-michal.kazior@tieto.com> References: <1423749198-11346-1-git-send-email-michal.kazior@tieto.com> X-DomainID: tieto.com Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP qca6174 with wmi-tlv firmware uses offloaded beaconing scheme (i.e. templates). This requires a little different approach when implementing CSA. Add missing code to update CS count and report CSA completion to mac80211. Without it channel switch was never finished. Signed-off-by: Michal Kazior --- Notes: v2: * rebased * remove data_lock usage (it wasn't necessary after all) * add lockdep * add sanity WARN_ON * check for csa_active before queueing ap csa work too drivers/net/wireless/ath/ath10k/core.h | 1 + drivers/net/wireless/ath/ath10k/mac.c | 68 +++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/wmi-tlv.c | 6 +++ 3 files changed, 75 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 7cba781..726c6e5 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -340,6 +340,7 @@ struct ath10k_vif { int num_legacy_stations; int txpower; struct wmi_wmm_params_all_arg wmm_params; + struct work_struct ap_csa_work; }; struct ath10k_vif_iter { diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 0f39af7..5440596 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -1056,6 +1056,10 @@ static int ath10k_mac_setup_bcn_tmpl(struct ath10k_vif *arvif) if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) return 0; + if (arvif->vdev_type != WMI_VDEV_TYPE_AP && + arvif->vdev_type != WMI_VDEV_TYPE_IBSS) + return 0; + bcn = ieee80211_beacon_get_template(hw, vif, &offs); if (!bcn) { ath10k_warn(ar, "failed to get beacon template from mac80211\n"); @@ -1101,6 +1105,9 @@ static int ath10k_mac_setup_prb_tmpl(struct ath10k_vif *arvif) if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) return 0; + if (arvif->vdev_type != WMI_VDEV_TYPE_AP) + return 0; + prb = ieee80211_proberesp_get(hw, vif); if (!prb) { ath10k_warn(ar, "failed to get probe resp template from mac80211\n"); @@ -1336,6 +1343,54 @@ static int ath10k_mac_vif_disable_keepalive(struct ath10k_vif *arvif) return 0; } +static void ath10k_mac_vif_ap_csa_count_down(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + struct ieee80211_vif *vif = arvif->vif; + int ret; + + lockdep_assert_held(&arvif->ar->conf_mutex); + + if (WARN_ON(!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))) + return; + + if (arvif->vdev_type != WMI_VDEV_TYPE_AP) + return; + + if (!vif->csa_active) + return; + + if (!arvif->is_up) + return; + + if (!ieee80211_csa_is_complete(vif)) { + ieee80211_csa_update_counter(vif); + + ret = ath10k_mac_setup_bcn_tmpl(arvif); + if (ret) + ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n", + ret); + + ret = ath10k_mac_setup_prb_tmpl(arvif); + if (ret) + ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n", + ret); + } else { + ieee80211_csa_finish(vif); + } +} + +static void ath10k_mac_vif_ap_csa_work(struct work_struct *work) +{ + struct ath10k_vif *arvif = container_of(work, struct ath10k_vif, + ap_csa_work); + struct ath10k *ar = arvif->ar; + + mutex_lock(&ar->conf_mutex); + ath10k_mac_vif_ap_csa_count_down(arvif); + mutex_unlock(&ar->conf_mutex); +} + /**********************/ /* Station management */ /**********************/ @@ -3022,6 +3077,16 @@ static void ath10k_config_chan(struct ath10k *ar) if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) continue; + ret = ath10k_mac_setup_bcn_tmpl(arvif); + if (ret) + ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n", + ret); + + ret = ath10k_mac_setup_prb_tmpl(arvif); + if (ret) + ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n", + ret); + ret = ath10k_vdev_restart(arvif); if (ret) { ath10k_warn(ar, "failed to restart vdev %d: %d\n", @@ -3182,6 +3247,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, arvif->vif = vif; INIT_LIST_HEAD(&arvif->list); + INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work); if (ar->free_vdev_map == 0) { ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n"); @@ -3399,6 +3465,8 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw, struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); int ret; + cancel_work_sync(&arvif->ap_csa_work); + mutex_lock(&ar->conf_mutex); spin_lock_bh(&ar->data_lock); diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index f34baa0..94c4425 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -17,6 +17,7 @@ #include "core.h" #include "debug.h" #include "hw.h" +#include "mac.h" #include "wmi.h" #include "wmi-ops.h" #include "wmi-tlv.h" @@ -168,6 +169,7 @@ static int ath10k_wmi_tlv_event_bcn_tx_status(struct ath10k *ar, { const void **tb; const struct wmi_tlv_bcn_tx_status_ev *ev; + struct ath10k_vif *arvif; u32 vdev_id, tx_status; int ret; @@ -201,6 +203,10 @@ static int ath10k_wmi_tlv_event_bcn_tx_status(struct ath10k *ar, break; } + arvif = ath10k_get_arvif(ar, vdev_id); + if (arvif && arvif->is_up && arvif->vif->csa_active) + ieee80211_queue_work(ar->hw, &arvif->ap_csa_work); + kfree(tb); return 0; }