From patchwork Wed May 25 13:22:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Gong X-Patchwork-Id: 12861178 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A34E5C433F5 for ; Wed, 25 May 2022 13:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233335AbiEYNXG (ORCPT ); Wed, 25 May 2022 09:23:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240673AbiEYNXE (ORCPT ); Wed, 25 May 2022 09:23:04 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97F702B1B4 for ; Wed, 25 May 2022 06:23:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653484983; x=1685020983; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=XWjhDOVuoJ9nsRwSOUPqJvdiZiXJR4CBQSV0s3/KqWk=; b=SrAv+8WE52TVs2KPxxXN5LMKOg4ZFvdf2VgmJEZ+lBXLRE2JXjfw8jeB ec5Y4+qrgBasxQBkBSG6t8Z5but8nKGOil3pZarqhgENig+IFrEbHseoO TV3/iyD7tsCl0e+0Luih6c61UV9ZgOxsLJIkiP6Xopdb+cnMRgoGGBSOF c=; Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 25 May 2022 06:23:03 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2022 06:23:02 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 25 May 2022 06:23:02 -0700 Received: from wgong-HP3-Z230-SFF-Workstation.qca.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 25 May 2022 06:23:01 -0700 From: Wen Gong To: CC: , Subject: [PATCH] ath10k: fix regdomain info of iw reg set/get Date: Wed, 25 May 2022 09:22:47 -0400 Message-ID: <20220525132247.23459-1-quic_wgong@quicinc.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org When wlan load, firmware report the reg code with 0x6C for QCA6174, it is world reg which checked by ath_is_world_regd(), then the reg will be save into reg_world_copy of ath_common in ath_regd_init(). Later the regulatory of ath_common is updated to another country code such as "US" in ath_reg_notifier_apply() by below call stack. After that, regulatory_hint() is called in ath10k_mac_register() and it lead "iw reg get" show two regdomain info as below. global country US: DFS-FCC (2400 - 2472 @ 40), (N/A, 30), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5350 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW (5470 - 5730 @ 160), (N/A, 23), (0 ms), DFS (5730 - 5850 @ 80), (N/A, 30), (N/A) (57240 - 71000 @ 2160), (N/A, 40), (N/A) phy#0 country US: DFS-FCC (2400 - 2472 @ 40), (N/A, 30), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5350 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW (5470 - 5730 @ 160), (N/A, 23), (0 ms), DFS (5730 - 5850 @ 80), (N/A, 30), (N/A) (57240 - 71000 @ 2160), (N/A, 40), (N/A) [ 4255.704975] Call Trace: [ 4255.704983] ath_reg_notifier_apply+0xa6/0xc5 [ath] [ 4255.704991] ath10k_reg_notifier+0x2f/0xd2 [ath10k_core] [ 4255.705010] wiphy_regulatory_register+0x5f/0x69 [cfg80211] [ 4255.705020] wiphy_register+0x459/0x8f0 [cfg80211] [ 4255.705042] ? ieee80211_register_hw+0x3a6/0x7d1 [mac80211] [ 4255.705049] ? __kmalloc+0xf4/0x218 [ 4255.705058] ? ieee80211_register_hw+0x3a6/0x7d1 [mac80211] [ 4255.705066] ? ath10k_mac_register+0x70/0xaab [ath10k_core] [ 4255.705075] ieee80211_register_hw+0x51a/0x7d1 [mac80211] [ 4255.705084] ath10k_mac_register+0x8b4/0xaab [ath10k_core] [ 4255.705094] ath10k_core_register_work+0xa5e/0xb45 [ath10k_core] [ 4255.705100] ? __schedule+0x61f/0x7d3 [ 4255.705105] process_one_work+0x1b7/0x392 [ 4255.705109] worker_thread+0x271/0x35d [ 4255.705112] ? pr_cont_work+0x58/0x58 [ 4255.705116] kthread+0x13f/0x147 [ 4255.705119] ? pr_cont_work+0x58/0x58 [ 4255.705123] ? kthread_destroy_worker+0x62/0x62 [ 4255.705126] ret_from_fork+0x22/0x40 At this moment, the two regdomain info is same, when run "iw reg set KR", the global regdomain info changed to KR, but the regdomain of phy#0 does not change again. It leads inconsistent values between global and phy#0 as below. global country KR: DFS-JP (2402 - 2482 @ 40), (N/A, 13), (N/A) (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW (5490 - 5710 @ 160), (N/A, 30), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A) (57000 - 66000 @ 2160), (N/A, 43), (N/A) phy#0 country US: DFS-FCC (2400 - 2472 @ 40), (N/A, 30), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5350 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW (5470 - 5730 @ 160), (N/A, 23), (0 ms), DFS (5730 - 5850 @ 80), (N/A, 30), (N/A) (57240 - 71000 @ 2160), (N/A, 40), (N/A) The initial reg code is 0x6C which saved in reg_world_copy of ath_common, and the code US is updated from cfg80211 later, so ath10k should also check the initial reg code before regulatory_hint(). After this fix, regdomain info is same between "iw reg get" and "iw reg set xx", it does not have the regdomain info of phy#0 again. global country KR: DFS-JP (2402 - 2482 @ 40), (N/A, 13), (N/A) (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW (5490 - 5710 @ 160), (N/A, 30), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A) (57000 - 66000 @ 2160), (N/A, 43), (N/A) This does not effect the channel list and power which ath10k used. When the country code for regulatory_hint() in ath10k_mac_register() is same with the global country code, then reg_set_rd_driver() of cfg80211 called from crda which return -EALREADY to set_regdom() and then update_all_wiphy_regulatory() will not be called while wlan load. When run "iw reg set xx", reg_get_regdomain() which used by function handle_channel() in net/wirelss/reg.c always use the regdomain returned by get_cfg80211_regdom() because the initiator of last regulatory_request is NL80211_REGDOM_SET_BY_USER, get_cfg80211_regdom() is the global regdomain, then all the ieee80211_channel info is updated in handle_channel() with the global regdomain. Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 Tested-on: QCA9984 hw1.0 PCI 10.4-3.6-00104 Signed-off-by: Wen Gong --- drivers/net/wireless/ath/ath10k/mac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) base-commit: 3637b73b8e805d011202e2bf10947f2d206695d4 diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index c460f6f8d4bb..57537de2e790 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -10208,7 +10208,8 @@ int ath10k_mac_register(struct ath10k *ar) ar->hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); } - if (!ath_is_world_regd(&ar->ath_common.regulatory)) { + if (!ath_is_world_regd(&ar->ath_common.reg_world_copy) && + !ath_is_world_regd(&ar->ath_common.regulatory)) { ret = regulatory_hint(ar->hw->wiphy, ar->ath_common.regulatory.alpha2); if (ret)