linux-wireless.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
	Luca Coelho <luciano.coelho@intel.com>,
	Kalle Valo <kvalo@codeaurora.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.5 519/542] iwlwifi: mvm: fix TDLS discovery with the new firmware API
Date: Fri, 14 Feb 2020 10:48:31 -0500	[thread overview]
Message-ID: <20200214154854.6746-519-sashal@kernel.org> (raw)
In-Reply-To: <20200214154854.6746-1-sashal@kernel.org>

From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

[ Upstream commit b5b878e36c1836c0195575132cc7c199e5a34a7b ]

I changed the API for asking for a session protection but
I omitted the TDLS flows. Fix that now.
Note that for the TDLS flow, we need to block until the
session protection actually starts, so add this option
to iwl_mvm_schedule_session_protection.
This patch fixes a firmware assert in the TDLS flow since
the old TIME_EVENT_CMD is not supported anymore by newer
firwmare versions.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fixes: fe959c7b2049 ("iwlwifi: mvm: use the new session protection command")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/intel/iwlwifi/mvm/mac80211.c |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/tdls.c | 10 ++-
 .../wireless/intel/iwlwifi/mvm/time-event.c   | 71 ++++++++++++++++---
 .../wireless/intel/iwlwifi/mvm/time-event.h   |  4 +-
 4 files changed, 72 insertions(+), 15 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 8ecd1f6875deb..02df603b64000 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -3291,7 +3291,7 @@ static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
 	if (fw_has_capa(&mvm->fw->ucode_capa,
 			IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
 		iwl_mvm_schedule_session_protection(mvm, vif, 900,
-						    min_duration);
+						    min_duration, false);
 	else
 		iwl_mvm_protect_session(mvm, vif, duration,
 					min_duration, 500, false);
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
index 1851719e9f4b4..d781777b6b965 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c
@@ -205,9 +205,15 @@ void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 	u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
 
-	mutex_lock(&mvm->mutex);
 	/* Protect the session to hear the TDLS setup response on the channel */
-	iwl_mvm_protect_session(mvm, vif, duration, duration, 100, true);
+	mutex_lock(&mvm->mutex);
+	if (fw_has_capa(&mvm->fw->ucode_capa,
+			IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
+		iwl_mvm_schedule_session_protection(mvm, vif, duration,
+						    duration, true);
+	else
+		iwl_mvm_protect_session(mvm, vif, duration,
+					duration, 100, true);
 	mutex_unlock(&mvm->mutex);
 }
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
index 51b138673ddbc..c0b420fe5e48f 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
@@ -1056,13 +1056,42 @@ int iwl_mvm_schedule_csa_period(struct iwl_mvm *mvm,
 	return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd);
 }
 
+static bool iwl_mvm_session_prot_notif(struct iwl_notif_wait_data *notif_wait,
+				       struct iwl_rx_packet *pkt, void *data)
+{
+	struct iwl_mvm *mvm =
+		container_of(notif_wait, struct iwl_mvm, notif_wait);
+	struct iwl_mvm_session_prot_notif *resp;
+	int resp_len = iwl_rx_packet_payload_len(pkt);
+
+	if (WARN_ON(pkt->hdr.cmd != SESSION_PROTECTION_NOTIF ||
+		    pkt->hdr.group_id != MAC_CONF_GROUP))
+		return true;
+
+	if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
+		IWL_ERR(mvm, "Invalid SESSION_PROTECTION_NOTIF response\n");
+		return true;
+	}
+
+	resp = (void *)pkt->data;
+
+	if (!resp->status)
+		IWL_ERR(mvm,
+			"TIME_EVENT_NOTIFICATION received but not executed\n");
+
+	return true;
+}
+
 void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm,
 					 struct ieee80211_vif *vif,
-					 u32 duration, u32 min_duration)
+					 u32 duration, u32 min_duration,
+					 bool wait_for_notif)
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
-
+	const u16 notif[] = { iwl_cmd_id(SESSION_PROTECTION_NOTIF,
+					 MAC_CONF_GROUP, 0) };
+	struct iwl_notification_wait wait_notif;
 	struct iwl_mvm_session_prot_cmd cmd = {
 		.id_and_color =
 			cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
@@ -1071,7 +1100,6 @@ void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm,
 		.conf_id = cpu_to_le32(SESSION_PROTECT_CONF_ASSOC),
 		.duration_tu = cpu_to_le32(MSEC_TO_TU(duration)),
 	};
-	int ret;
 
 	lockdep_assert_held(&mvm->mutex);
 
@@ -1092,14 +1120,35 @@ void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm,
 	IWL_DEBUG_TE(mvm, "Add new session protection, duration %d TU\n",
 		     le32_to_cpu(cmd.duration_tu));
 
-	ret = iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(SESSION_PROTECTION_CMD,
-						   MAC_CONF_GROUP, 0),
-				   0, sizeof(cmd), &cmd);
-	if (ret) {
+	if (!wait_for_notif) {
+		if (iwl_mvm_send_cmd_pdu(mvm,
+					 iwl_cmd_id(SESSION_PROTECTION_CMD,
+						    MAC_CONF_GROUP, 0),
+					 0, sizeof(cmd), &cmd)) {
+			IWL_ERR(mvm,
+				"Couldn't send the SESSION_PROTECTION_CMD\n");
+			spin_lock_bh(&mvm->time_event_lock);
+			iwl_mvm_te_clear_data(mvm, te_data);
+			spin_unlock_bh(&mvm->time_event_lock);
+		}
+
+		return;
+	}
+
+	iwl_init_notification_wait(&mvm->notif_wait, &wait_notif,
+				   notif, ARRAY_SIZE(notif),
+				   iwl_mvm_session_prot_notif, NULL);
+
+	if (iwl_mvm_send_cmd_pdu(mvm,
+				 iwl_cmd_id(SESSION_PROTECTION_CMD,
+					    MAC_CONF_GROUP, 0),
+				 0, sizeof(cmd), &cmd)) {
 		IWL_ERR(mvm,
-			"Couldn't send the SESSION_PROTECTION_CMD: %d\n", ret);
-		spin_lock_bh(&mvm->time_event_lock);
-		iwl_mvm_te_clear_data(mvm, te_data);
-		spin_unlock_bh(&mvm->time_event_lock);
+			"Couldn't send the SESSION_PROTECTION_CMD\n");
+		iwl_remove_notification(&mvm->notif_wait, &wait_notif);
+	} else if (iwl_wait_notification(&mvm->notif_wait, &wait_notif,
+					 TU_TO_JIFFIES(100))) {
+		IWL_ERR(mvm,
+			"Failed to protect session until session protection\n");
 	}
 }
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h
index df6832b796666..3186d7e40567c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h
@@ -250,10 +250,12 @@ iwl_mvm_te_scheduled(struct iwl_mvm_time_event_data *te_data)
  * @mvm: the mvm component
  * @vif: the virtual interface for which the protection issued
  * @duration: the duration of the protection
+ * @wait_for_notif: if true, will block until the start of the protection
  */
 void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm,
 					 struct ieee80211_vif *vif,
-					 u32 duration, u32 min_duration);
+					 u32 duration, u32 min_duration,
+					 bool wait_for_notif);
 
 /**
  * iwl_mvm_rx_session_protect_notif - handles %SESSION_PROTECTION_NOTIF
-- 
2.20.1


      parent reply	other threads:[~2020-02-14 17:47 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:39 ` [PATCH AUTOSEL 5.5 004/542] ath10k: Fix qmi init error handling Sasha Levin
2020-02-14 15:39 ` [PATCH AUTOSEL 5.5 005/542] wil6210: fix break that is never reached because of zero'ing of a retry counter Sasha Levin
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 026/542] brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev() Sasha Levin
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 027/542] brcmfmac: Fix use after free in brcmf_sdio_readframes() Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 107/542] ath10k: Correct the DMA direction for management tx buffers Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 109/542] rtw88: fix rate mask for 1SS chip Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 110/542] brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362 Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 111/542] libertas: don't exit from lbs_ibss_join_existing() with RCU read lock held Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 112/542] libertas: make lbs_ibss_join_existing() return error code on rates overflow Sasha Levin
2020-02-14 15:42 ` [PATCH AUTOSEL 5.5 132/542] mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap Sasha Levin
2020-02-14 15:42 ` [PATCH AUTOSEL 5.5 167/542] ath10k: correct the tlv len of ath10k_wmi_tlv_op_gen_config_pno_start Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 226/542] b43legacy: Fix -Wcast-function-type Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 227/542] ipw2x00: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 228/542] iwlegacy: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 229/542] rtlwifi: rtl_pci: " Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 230/542] bcma: remove set but not used variable 'sizel' Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 231/542] orinoco: avoid assertion in case of NULL pointer Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 471/542] ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 472/542] hostap: Adjust indentation in prism2_hostapd_add_sta Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 473/542] rtw88: fix potential NULL skb access in TX ISR Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 474/542] rtlwifi: rtl8821ae: remove unused variables Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 475/542] rtlwifi: rtl8192ee: " Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 476/542] rtlwifi: rtl8723ae: " Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 477/542] iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 484/542] mwifiex: Fix possible buffer overflows in mwifiex_ret_wmm_get_status() Sasha Levin
2020-02-14 15:47 ` [PATCH AUTOSEL 5.5 485/542] mwifiex: Fix possible buffer overflows in mwifiex_cmd_append_vsie_tlv() Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 516/542] iwlwifi: mvm: Fix thermal zone registration Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 517/542] iwlwifi: mvm: avoid use after free for pmsr request Sasha Levin
2020-02-14 15:48 ` [PATCH AUTOSEL 5.5 518/542] iwlwifi: mvm: Check the sta is not NULL in iwl_mvm_cfg_he_sta() Sasha Levin
2020-02-14 15:48 ` Sasha Levin [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200214154854.6746-519-sashal@kernel.org \
    --to=sashal@kernel.org \
    --cc=emmanuel.grumbach@intel.com \
    --cc=kvalo@codeaurora.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-wireless@vger.kernel.org \
    --cc=luciano.coelho@intel.com \
    --cc=netdev@vger.kernel.org \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).