From patchwork Thu Mar 2 08:05:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aditya Kumar Singh X-Patchwork-Id: 658416 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 816BBC6FA8E for ; Thu, 2 Mar 2023 08:06:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229703AbjCBIG4 (ORCPT ); Thu, 2 Mar 2023 03:06:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229691AbjCBIGs (ORCPT ); Thu, 2 Mar 2023 03:06:48 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 519C635257 for ; Thu, 2 Mar 2023 00:06:44 -0800 (PST) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3223o1CO013236; Thu, 2 Mar 2023 08:05:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=Sl6KxGwrZJemZWRCCn+4UuNkQoagAmhfnxpi5X4QqFY=; b=nJzxyBUGTmmP/xejKtMxlp1EnMlrOTVQlz9pCMZ5vsjaFXzyyCdLr6k23bI7fLhhivF8 74e+lb6GOwkUSGhZdnjS7gQaQ6FsUvDpd/8doP8byl+hpIIgyqOvxz8gY39F7Tvc14WI QUX6I6RCXsUrnUxpJIVNukgVQxNVeFTMU6NU/wyz+3O7YKFueDbXcXa0+PB76L/dd5dY s/5mVKbIb8iFrDmMH/8VopDiJAq8ZDw+5/pN/wxUaDn0RTxqGHl+QDZzznY8lRfrfOdN Qr8UTo46rl2imJdqZptZl7G5Wk1zVDrRP2tzopgCU5GM6u57jS/ar39K3RwdIbKyxC+x IQ== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3p288r2ebb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 Mar 2023 08:05:57 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 32285uNu029234 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 Mar 2023 08:05:56 GMT Received: from adisi-linux.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 15.2.986.41; Thu, 2 Mar 2023 00:05:54 -0800 From: Aditya Kumar Singh To: CC: , Wen Gong , Aditya Kumar Singh Subject: [PATCH v2 2/7] wifi: cfg80211: save Power Spectral Density (PSD) of the regulatory rule Date: Thu, 2 Mar 2023 13:35:29 +0530 Message-ID: <20230302080534.22821-3-quic_adisi@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230302080534.22821-1-quic_adisi@quicinc.com> References: <20230302080534.22821-1-quic_adisi@quicinc.com> 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) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: sO5KFripwCGKXffXVmXWls3NMmdmXw24 X-Proofpoint-ORIG-GUID: sO5KFripwCGKXffXVmXWls3NMmdmXw24 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-02_03,2023-03-01_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 impostorscore=0 mlxlogscore=999 malwarescore=0 clxscore=1015 mlxscore=0 priorityscore=1501 suspectscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303020069 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Wen Gong 6 GHz regulatory domains introduces Power Spectral Density (PSD). The PSD value of the regulatory rule should be taken into effect for the ieee80211_channels falling into that particular regulatory rule. Save the values in the channel which has PSD value and add nl80211 attributes accordingly to handle it. Signed-off-by: Wen Gong Co-developed-by: Aditya Kumar Singh Signed-off-by: Aditya Kumar Singh --- include/net/cfg80211.h | 5 +++++ include/net/regulatory.h | 1 + include/uapi/linux/nl80211.h | 9 +++++++++ net/wireless/nl80211.c | 18 ++++++++++++++++++ net/wireless/reg.c | 17 +++++++++++++++++ 5 files changed, 50 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f115b2550309..5728ad923d8d 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -115,6 +115,8 @@ struct wiphy; * This may be due to the driver or due to regulatory bandwidth * restrictions. * @IEEE80211_CHAN_NO_EHT: EHT operation is not permitted on this channel. + * @IEEE80211_CHAN_PSD: power spectral density (in dBm) + * on this channel */ enum ieee80211_channel_flags { IEEE80211_CHAN_DISABLED = 1<<0, @@ -138,6 +140,7 @@ enum ieee80211_channel_flags { IEEE80211_CHAN_16MHZ = 1<<18, IEEE80211_CHAN_NO_320MHZ = 1<<19, IEEE80211_CHAN_NO_EHT = 1<<20, + IEEE80211_CHAN_PSD = 1<<21, }; #define IEEE80211_CHAN_NO_HT40 \ @@ -171,6 +174,7 @@ enum ieee80211_channel_flags { * on this channel. * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels. + * @psd: power spectral density (in dBm) */ struct ieee80211_channel { enum nl80211_band band; @@ -187,6 +191,7 @@ struct ieee80211_channel { enum nl80211_dfs_state dfs_state; unsigned long dfs_state_entered; unsigned int dfs_cac_ms; + s8 psd; }; /** diff --git a/include/net/regulatory.h b/include/net/regulatory.h index 896191f420d5..c2bf0b39fd1e 100644 --- a/include/net/regulatory.h +++ b/include/net/regulatory.h @@ -224,6 +224,7 @@ struct ieee80211_reg_rule { u32 flags; u32 dfs_cac_ms; bool has_wmm; + s8 psd; }; struct ieee80211_regdomain { diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index f14621a954e1..6e85af3fa8d7 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -4145,6 +4145,8 @@ enum nl80211_wmm_rule { * as the primary or any of the secondary channels isn't possible * @NL80211_FREQUENCY_ATTR_NO_EHT: EHT operation is not allowed on this channel * in current regulatory domain. + * @NL80211_FREQUENCY_ATTR_PSD: power spectral density (in dBm) + * is allowed on this channel in current regulatory domain. * @NL80211_FREQUENCY_ATTR_MAX: highest frequency attribute number * currently defined * @__NL80211_FREQUENCY_ATTR_AFTER_LAST: internal use @@ -4183,6 +4185,7 @@ enum nl80211_frequency_attr { NL80211_FREQUENCY_ATTR_16MHZ, NL80211_FREQUENCY_ATTR_NO_320MHZ, NL80211_FREQUENCY_ATTR_NO_EHT, + NL80211_FREQUENCY_ATTR_PSD, /* keep last */ __NL80211_FREQUENCY_ATTR_AFTER_LAST, @@ -4283,6 +4286,8 @@ enum nl80211_reg_type { * a given frequency range. The value is in mBm (100 * dBm). * @NL80211_ATTR_DFS_CAC_TIME: DFS CAC time in milliseconds. * If not present or 0 default CAC time will be used. + * @NL80211_ATTR_POWER_RULE_PSD: power spectral density (in dBm). + * This could be negative. * @NL80211_REG_RULE_ATTR_MAX: highest regulatory rule attribute number * currently defined * @__NL80211_REG_RULE_ATTR_AFTER_LAST: internal use @@ -4300,6 +4305,8 @@ enum nl80211_reg_rule_attr { NL80211_ATTR_DFS_CAC_TIME, + NL80211_ATTR_POWER_RULE_PSD, + /* keep last */ __NL80211_REG_RULE_ATTR_AFTER_LAST, NL80211_REG_RULE_ATTR_MAX = __NL80211_REG_RULE_ATTR_AFTER_LAST - 1 @@ -4382,6 +4389,7 @@ enum nl80211_sched_scan_match_attr { * @NL80211_RRF_NO_160MHZ: 160MHz operation not allowed * @NL80211_RRF_NO_HE: HE operation not allowed * @NL80211_RRF_NO_320MHZ: 320MHz operation not allowed + * @NL80211_RRF_PSD: channels has power spectral density value */ enum nl80211_reg_rule_flags { NL80211_RRF_NO_OFDM = 1<<0, @@ -4401,6 +4409,7 @@ enum nl80211_reg_rule_flags { NL80211_RRF_NO_160MHZ = 1<<16, NL80211_RRF_NO_HE = 1<<17, NL80211_RRF_NO_320MHZ = 1<<18, + NL80211_RRF_PSD = 1<<19, }; #define NL80211_RRF_PASSIVE_SCAN NL80211_RRF_NO_IR diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 112b4bb009c8..ca40fab0d3ad 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1103,6 +1103,10 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset)) goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_PSD) && + nla_put_s8(msg, NL80211_FREQUENCY_ATTR_PSD, chan->psd)) + goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_DISABLED) && nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) goto nla_put_failure; @@ -8448,6 +8452,11 @@ static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, reg_rule->dfs_cac_ms)) goto nla_put_failure; + if ((reg_rule->flags & NL80211_RRF_PSD) && + nla_put_s8(msg, NL80211_ATTR_POWER_RULE_PSD, + reg_rule->psd)) + goto nla_put_failure; + nla_nest_end(msg, nl_reg_rule); } @@ -8621,6 +8630,7 @@ static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, + [NL80211_ATTR_POWER_RULE_PSD] = { .type = NLA_S8 }, }; static int parse_reg_rule(struct nlattr *tb[], @@ -8642,6 +8652,14 @@ static int parse_reg_rule(struct nlattr *tb[], reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); + if (reg_rule->flags & NL80211_RRF_PSD) { + if (!tb[NL80211_ATTR_POWER_RULE_PSD]) + return -EINVAL; + + reg_rule->psd = + nla_get_s8(tb[NL80211_ATTR_POWER_RULE_PSD]); + } + freq_range->start_freq_khz = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); freq_range->end_freq_khz = diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 0d40d6af7e10..452e0085ed2c 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1587,6 +1587,8 @@ static u32 map_regdom_flags(u32 rd_flags) channel_flags |= IEEE80211_CHAN_NO_HE; if (rd_flags & NL80211_RRF_NO_320MHZ) channel_flags |= IEEE80211_CHAN_NO_320MHZ; + if (rd_flags & NL80211_RRF_PSD) + channel_flags |= IEEE80211_CHAN_PSD; return channel_flags; } @@ -1793,6 +1795,9 @@ static void handle_channel_single_rule(struct wiphy *wiphy, chan->dfs_cac_ms = reg_rule->dfs_cac_ms; } + if (chan->flags & IEEE80211_CHAN_PSD) + chan->psd = reg_rule->psd; + return; } @@ -1813,6 +1818,9 @@ static void handle_channel_single_rule(struct wiphy *wiphy, chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; } + if (chan->flags & IEEE80211_CHAN_PSD) + chan->psd = reg_rule->psd; + if (chan->orig_mpwr) { /* * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER @@ -1882,6 +1890,12 @@ static void handle_channel_adjacent_rules(struct wiphy *wiphy, rrule2->dfs_cac_ms); } + if ((rrule1->flags & NL80211_RRF_PSD) && + (rrule2->flags & NL80211_RRF_PSD)) + chan->psd = min_t(s8, rrule1->psd, rrule2->psd); + else + chan->flags &= ~NL80211_RRF_PSD; + return; } @@ -2572,6 +2586,9 @@ static void handle_channel_custom(struct wiphy *wiphy, chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; } + if (chan->flags & IEEE80211_CHAN_PSD) + chan->psd = reg_rule->psd; + chan->max_power = chan->max_reg_power; }