From patchwork Mon May 23 06:49:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aloka Dixit X-Patchwork-Id: 575728 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 84CAEC433EF for ; Mon, 23 May 2022 07:46:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230440AbiEWHqr (ORCPT ); Mon, 23 May 2022 03:46:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231311AbiEWHqg (ORCPT ); Mon, 23 May 2022 03:46:36 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEA5F18388 for ; Mon, 23 May 2022 00:46:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653291995; x=1684827995; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=0DUTQjpzpa7nYC8Uqi/Z3X8keXH8jzfvfBYPWL+TFcQ=; b=ZISjf3T97EAzShNMS2bow9lTlRHNHru21IGXqtQWgqeafaTGHjstvpsk Im5TSq67p8wiE29tATkR2VoZCI1omoqWZh14uI4CHpAZ+ixZPI6ruJ25m QqwZDXCOcmtya7Il1J3grZ8O9W6gdUg6XbhdIPsOKgBf9vOvzqEXJDXJV U=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 22 May 2022 23:49:21 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 May 2022 23:49:20 -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; Sun, 22 May 2022 23:49:20 -0700 Received: from alokad-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 15.2.986.22; Sun, 22 May 2022 23:49:20 -0700 From: Aloka Dixit To: , CC: Aloka Dixit , Vikram Kandukuri , Veerendranath Jakkam Subject: [PATCH v3] nl80211: retrieve EHT related elements in AP mode Date: Sun, 22 May 2022 23:49:04 -0700 Message-ID: <20220523064904.28523-1-quic_alokad@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 Add support to retrieve EHT capabilities and EHT operation elements passed by the userspace in the beacon template and store the pointers in struct cfg80211_ap_settings to be used by the drivers. Co-developed-by: Vikram Kandukuri Signed-off-by: Vikram Kandukuri Co-developed-by: Veerendranath Jakkam Signed-off-by: Veerendranath Jakkam Signed-off-by: Aloka Dixit --- v3: Rolled v2 patch #1 and #2 into a single patch and added checks for element lengths. Dropped patch #3 for now. include/net/cfg80211.h | 4 ++++ net/wireless/nl80211.c | 26 ++++++++++++++++++++++++-- 2 files changed, 28 insertions(+), 2 deletions(-) base-commit: 9335156ac0e174721921c404bd173526c8509124 diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 97a5804ccdcf..a7a68bf26333 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1290,6 +1290,8 @@ struct cfg80211_unsol_bcast_probe_resp { * @ht_cap: HT capabilities (or %NULL if HT isn't enabled) * @vht_cap: VHT capabilities (or %NULL if VHT isn't enabled) * @he_cap: HE capabilities (or %NULL if HE isn't enabled) + * @eht_cap: EHT capabilities (or %NULL if EHT isn't enabled) + * @eht_oper: EHT operation IE (or %NULL if EHT isn't enabled) * @ht_required: stations must support HT * @vht_required: stations must support VHT * @twt_responder: Enable Target Wait Time @@ -1326,6 +1328,8 @@ struct cfg80211_ap_settings { const struct ieee80211_vht_cap *vht_cap; const struct ieee80211_he_cap_elem *he_cap; const struct ieee80211_he_operation *he_oper; + const struct ieee80211_eht_cap_elem *eht_cap; + const struct ieee80211_eht_operation *eht_oper; bool ht_required, vht_required, he_required, sae_h2e_required; bool twt_responder; u32 flags; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 740b29481bc6..3c62969107f0 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5436,7 +5436,7 @@ static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, * HT/VHT requirements/capabilities, we parse them out of the IEs for the * benefit of drivers that rebuild IEs in the firmware. */ -static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) +static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) { const struct cfg80211_beacon_data *bcn = ¶ms->beacon; size_t ies_len = bcn->tail_len; @@ -5462,6 +5462,26 @@ static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len); if (cap && cap->datalen >= sizeof(*params->he_oper) + 1) params->he_oper = (void *)(cap->data + 1); + cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len); + if (cap) { + if (!cap->datalen) + return -EINVAL; + params->eht_cap = (void *)(cap->data + 1); + if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap, + (const u8 *)params->eht_cap, + cap->datalen - 1)) + return -EINVAL; + } + cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len); + if (cap) { + if (!cap->datalen) + return -EINVAL; + params->eht_oper = (void *)(cap->data + 1); + if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper, + cap->datalen - 1)) + return -EINVAL; + } + return 0; } static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, @@ -5770,7 +5790,9 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) goto out; } - nl80211_calculate_ap_params(params); + err = nl80211_calculate_ap_params(params); + if (err) + goto out; if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]) params->flags = nla_get_u32(