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From: Luca Coelho <luca@coelho.fi>
To: kvalo@codeaurora.org
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH 07/13] iwlwifi: mvm: add notification for missed VAP
Date: Sat, 12 Oct 2019 19:29:18 +0300
Message-ID: <20191012192536.98a269a24f9e.Id7ec5e7b6c31f289b3c6803da3f88fdac09f4b14@changeid> (raw)
In-Reply-To: <20191012162924.19848-1-luca@coelho.fi>

From: Lior Cohen <lior2.cohen@intel.com>

A missed VAP notification will be sent from umac when
the station is out of sync with its associated non-transmitted
BSSID. The notification will be sent only if the transmitted
BSSID is an EMA-AP one.

The driver will consider this notification as connection loss.

Signed-off-by: Lior Cohen <lior2.cohen@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 .../wireless/intel/iwlwifi/fw/api/mac-cfg.h   | 19 +++++++++++++++
 .../net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 23 +++++++++++++++++++
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h  |  2 ++
 3 files changed, 44 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h b/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
index 69786343aff4..e7a1acedbcf1 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
@@ -77,6 +77,10 @@ enum iwl_mac_conf_subcmd_ids {
 	 * @CHANNEL_SWITCH_TIME_EVENT_CMD: &struct iwl_chan_switch_te_cmd
 	 */
 	CHANNEL_SWITCH_TIME_EVENT_CMD = 0x4,
+	/**
+	 * @MISSED_VAP_NOTIF: &struct iwl_missed_vap_notif
+	 */
+	MISSED_VAP_NOTIF = 0xFA,
 	/**
 	 * @SESSION_PROTECTION_CMD: &struct iwl_mvm_session_prot_cmd
 	 */
@@ -140,6 +144,21 @@ struct iwl_probe_resp_data_notif {
 	u8 reserved[3];
 } __packed; /* PROBE_RESPONSE_DATA_NTFY_API_S_VER_1 */
 
+/**
+ * struct iwl_missed_vap_notif - notification of missing vap detection
+ *
+ * @mac_id: the mac for which the ucode sends the notification for
+ * @num_beacon_intervals_elapsed: beacons elpased with no vap profile inside
+ * @profile_periodicity: beacons period to have our profile inside
+ * @reserved: reserved for alignment purposes
+ */
+struct iwl_missed_vap_notif {
+	__le32 mac_id;
+	u8 num_beacon_intervals_elapsed;
+	u8 profile_periodicity;
+	u8 reserved[2];
+} __packed; /* MISSED_VAP_NTFY_API_S_VER_1 */
+
 /**
  * struct iwl_channel_switch_noa_notif - Channel switch NOA notification
  *
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index 70bb150ee0ca..d9c23cd96336 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1610,3 +1610,26 @@ void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
 out_unlock:
 	rcu_read_unlock();
 }
+
+void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
+				 struct iwl_rx_cmd_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_missed_vap_notif *mb = (void *)pkt->data;
+	struct ieee80211_vif *vif;
+	u32 id = le32_to_cpu(mb->mac_id);
+
+	IWL_DEBUG_INFO(mvm,
+		       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
+		       le32_to_cpu(mb->mac_id),
+		       mb->num_beacon_intervals_elapsed,
+		       mb->profile_periodicity);
+
+	rcu_read_lock();
+
+	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
+	if (vif)
+		iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
+
+	rcu_read_unlock();
+}
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 43257579ab48..f0246969dca0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1680,6 +1680,8 @@ void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
 				    struct ieee80211_vif *vif);
 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
 				   struct iwl_rx_cmd_buffer *rxb);
+void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
+				 struct iwl_rx_cmd_buffer *rxb);
 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
 				      struct iwl_rx_cmd_buffer *rxb);
 /* Bindings */
-- 
2.23.0


  parent reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-12 16:29 [PATCH 00/13] iwlwifi: updates intended for v5.5 2019-10-12-2 Luca Coelho
2019-10-12 16:29 ` [PATCH 01/13] iwlwifi: mvm: consider ieee80211 station max amsdu value Luca Coelho
2019-10-12 16:29 ` [PATCH 02/13] iwlwifi: mvm: add support for new version for D0I3_END_CMD Luca Coelho
2019-10-12 16:29 ` [PATCH 03/13] iwlwifi: mvm: remove leftover rs_remove_sta_debugfs() prototype Luca Coelho
2019-10-12 16:29 ` [PATCH 04/13] iwlwifi: mvm: use the new session protection command Luca Coelho
2019-10-12 16:29 ` [PATCH 05/13] iwlwifi: dbg: prefer struct copy to memcpy() Luca Coelho
2019-10-16  7:11   ` Kalle Valo
2019-10-18  8:19     ` Luca Coelho
2019-10-12 16:29 ` [PATCH 06/13] iwlwifi: mvm: fix old-style declaration Luca Coelho
2019-10-12 16:29 ` Luca Coelho [this message]
2019-10-12 16:29 ` [PATCH 08/13] iwlwifi: dbg_ini: add user trigger support Luca Coelho
2019-10-12 16:29 ` [PATCH 09/13] iwlwifi: dbg_ini: use vzalloc to allocate dumping memory regions Luca Coelho
2019-10-12 16:29 ` [PATCH 10/13] iwlwifi: mvm: create function to convert nl80211 band to phy band Luca Coelho
2019-10-12 16:29 ` [PATCH 11/13] iwlwifi: mvm: Invert the condition for OFDM rate Luca Coelho
2019-10-12 16:29 ` [PATCH 12/13] iwlwifi: nvm: create function to convert channel index to nl80211_band Luca Coelho
2019-10-12 16:29 ` [PATCH 13/13] iwlwifi: rx: use new api to get band from rx mpdu Luca Coelho

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