From patchwork Fri Feb 26 19:03:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Oh X-Patchwork-Id: 8441391 Return-Path: X-Original-To: patchwork-ath10k@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BDB76C0553 for ; Fri, 26 Feb 2016 19:05:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C19DA2037C for ; Fri, 26 Feb 2016 19:05:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3868820361 for ; Fri, 26 Feb 2016 19:05:53 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZNhp-0005UZ-5O; Fri, 26 Feb 2016 19:05:37 +0000 Received: from wolverine01.qualcomm.com ([199.106.114.254]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZNhm-0005OM-Ut for ath10k@lists.infradead.org; Fri, 26 Feb 2016 19:05:36 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1456513534; x=1488049534; h=from:to:cc:subject:date:message-id:mime-version; bh=4oLLl4nIZjk6YhKiFznao0/ifoeyb5ivsaSYAhO/Exk=; b=h7DEsSq1UOrxDivqHInuqPCMfKNgpRdTqA+l3AcjSh146fZ4ClH09gts pEA6EUrWGCcV9qp+zgB9mQdQxWcJz3LxircnKRg07V3MXaarHX4B3tvp/ RdoVAIgwEUnZVAJdt/JPVGrBllgHt8tqvGkQUTGU9BF/gJbJYcWsWh+g5 Y=; X-IronPort-AV: E=Sophos;i="5.22,504,1449561600"; d="scan'208";a="172142683" Received: from ironmsg03-r-new.qualcomm.com (HELO Ironmsg03-R.qualcomm.com) ([10.53.140.107]) by wolverine01.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 26 Feb 2016 11:05:13 -0800 X-IronPort-AV: E=McAfee;i="5700,7163,8087"; a="1092584274" Received: from nasanexm01b.na.qualcomm.com ([10.85.0.82]) by Ironmsg03-R.qualcomm.com with ESMTP/TLS/RC4-SHA; 26 Feb 2016 11:05:13 -0800 Received: from linux-poh.qualcomm.com (10.80.80.8) by NASANEXM01B.na.qualcomm.com (10.85.0.82) with Microsoft SMTP Server (TLS) id 15.0.1130.7; Fri, 26 Feb 2016 11:05:12 -0800 From: Peter Oh To: Subject: [PATCH v5] ath10k: set MAC timestamp in management Rx frame Date: Fri, 26 Feb 2016 11:03:38 -0800 Message-ID: <5bc6ba3b4d5743dc641b85c2c4233631f5b3319a.1456513260.git.poh@qca.qualcomm.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01C.na.qualcomm.com (10.85.0.83) To NASANEXM01B.na.qualcomm.com (10.85.0.82) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160226_110535_125075_DA1341B3 X-CRM114-Status: GOOD ( 10.40 ) X-Spam-Score: -7.0 (-------) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable 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 Check and set Rx MAC timestamp when firmware indicates it. Firmware adds it in Rx beacon frame only at this moment. Driver and mac80211 may utilize it to detect such clockdrift or beacon collision and use the result for beacon collision avoidance. Signed-off-by: Peter Oh --- v2: - fix kbuild test robot warning, left shift count >= width of type, at __le32_to_cpu(arg.ext_info.rx_mac_timestamp_u32) << 32 v3: - correct ext_info to start 4-byte aligned - make struct wmi_mgmt_rx_ext_info 4-byte aligned to comply FW's intention v4: - fix endianness warnings, restricted __le32 degrades to integer v5: - use ALIGN for better read drivers/net/wireless/ath/ath10k/wmi.c | 15 +++++++++++++++ drivers/net/wireless/ath/ath10k/wmi.h | 8 ++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 1ce6742..a343e74 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -2167,8 +2167,10 @@ static int ath10k_wmi_op_pull_mgmt_rx_ev(struct ath10k *ar, struct sk_buff *skb, struct wmi_mgmt_rx_event_v1 *ev_v1; struct wmi_mgmt_rx_event_v2 *ev_v2; struct wmi_mgmt_rx_hdr_v1 *ev_hdr; + struct wmi_mgmt_rx_ext_info *ext_info; size_t pull_len; u32 msdu_len; + u32 len; if (test_bit(ATH10K_FW_FEATURE_EXT_WMI_MGMT_RX, ar->fw_features)) { ev_v2 = (struct wmi_mgmt_rx_event_v2 *)skb->data; @@ -2195,6 +2197,12 @@ static int ath10k_wmi_op_pull_mgmt_rx_ev(struct ath10k *ar, struct sk_buff *skb, if (skb->len < msdu_len) return -EPROTO; + if (le32_to_cpu(arg->status) & WMI_RX_STATUS_EXT_INFO) { + len = ALIGN(le32_to_cpu(arg->buf_len), 4); + ext_info = (struct wmi_mgmt_rx_ext_info *)(skb->data + len); + memcpy(&arg->ext_info, ext_info, + sizeof(struct wmi_mgmt_rx_ext_info)); + } /* the WMI buffer might've ended up being padded to 4 bytes due to HTC * trailer with credit update. Trim the excess garbage. */ @@ -2281,6 +2289,13 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb) if (rx_status & WMI_RX_STATUS_ERR_MIC) status->flag |= RX_FLAG_MMIC_ERROR; + if (rx_status & WMI_RX_STATUS_EXT_INFO) { + status->mactime = + __le32_to_cpu(arg.ext_info.rx_mac_timestamp_l32) | + (u64)__le32_to_cpu(arg.ext_info.rx_mac_timestamp_u32) + << 32; + status->flag |= RX_FLAG_MACTIME_END; + } /* Hardware can Rx CCK rates on 5GHz. In that case phy_mode is set to * MODE_11B. This means phy_mode is not a reliable source for the band * of mgmt rx. diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index 4d3cbc4..f209d51 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -3037,11 +3037,18 @@ struct wmi_10_4_mgmt_rx_event { u8 buf[0]; } __packed; +struct wmi_mgmt_rx_ext_info { + __le32 rx_mac_timestamp_l32; + __le32 rx_mac_timestamp_u32; +} __packed __aligned(4); + #define WMI_RX_STATUS_OK 0x00 #define WMI_RX_STATUS_ERR_CRC 0x01 #define WMI_RX_STATUS_ERR_DECRYPT 0x08 #define WMI_RX_STATUS_ERR_MIC 0x10 #define WMI_RX_STATUS_ERR_KEY_CACHE_MISS 0x20 +/* Extension data at the end of mgmt frame */ +#define WMI_RX_STATUS_EXT_INFO 0x40 #define PHY_ERROR_GEN_SPECTRAL_SCAN 0x26 #define PHY_ERROR_GEN_FALSE_RADAR_EXT 0x24 @@ -6116,6 +6123,7 @@ struct wmi_mgmt_rx_ev_arg { __le32 phy_mode; __le32 buf_len; __le32 status; /* %WMI_RX_STATUS_ */ + struct wmi_mgmt_rx_ext_info ext_info; }; struct wmi_ch_info_ev_arg {