From patchwork Wed Sep 20 18:25:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 726357 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 610BAC04FD0 for ; Wed, 20 Sep 2023 18:27:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229645AbjITS1G (ORCPT ); Wed, 20 Sep 2023 14:27:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229581AbjITS1F (ORCPT ); Wed, 20 Sep 2023 14:27:05 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C16D4123 for ; Wed, 20 Sep 2023 11:26:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695234406; x=1726770406; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9A8ncsHTZr8uFdkqGZbGKrqo31vxEdNqJv6vyPQiGkk=; b=OaLfP/3/jCq1n1OiLFEtNDSpA6owBrso7DOaR+5ShEQdTDy4zlDu66Xp 0nlyO8hZHtebSVV3LqlgeYGNzomyjtje9LQGdykKf4sR2uEZCMyiuQzjX 2elVFIWzNpV31ATCIl6CaBfYgPagprp7TOYbDzFTI1JqyhZPH67ojkPi4 v8a6iSqhkx3HkSwCHkDe9N6kzEtkCeQnL2SMYdsKtnjOu5SYLSvyER6CO fIqXSSbNpgbiwkMMvnLaAQ82lwB90168+CGhFNE/UoL9mr25AX/6kb/sf O7I16usPRMcFFUPAn57Lx71VtsYNqucbUd+j/vbeZ1rwhUY7RFjyzcTih w==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="360556431" X-IronPort-AV: E=Sophos;i="6.03,162,1694761200"; d="scan'208";a="360556431" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 11:26:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="723424264" X-IronPort-AV: E=Sophos;i="6.03,162,1694761200"; d="scan'208";a="723424264" Received: from dmani-mobl1.ger.corp.intel.com (HELO ggreenma-mobl2.lan) ([10.214.217.100]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 11:26:41 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Ayala Beker , Gregory Greenman Subject: [PATCH v2 13/18] wifi: mac80211: add support for parsing TID to Link mapping element Date: Wed, 20 Sep 2023 21:25:24 +0300 Message-Id: <20230920211508.9ea9b0b4412a.I2281ab2c70e8b43a39032dc115db6a80f1f0b3f4@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230920182529.659973-1-gregory.greenman@intel.com> References: <20230920182529.659973-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ayala Beker Add the relevant definitions for TID to Link mapping element according to the P802.11be_D4.0. Signed-off-by: Ayala Beker Signed-off-by: Gregory Greenman --- include/linux/ieee80211.h | 58 ++++++++++++++++++++++++++++++++++++++ net/mac80211/ieee80211_i.h | 3 ++ net/mac80211/util.c | 8 ++++++ 3 files changed, 69 insertions(+) diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index f11b7022d9eb..f2965ff3d7c1 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1246,6 +1246,30 @@ struct ieee80211_twt_setup { u8 params[]; } __packed; +#define IEEE80211_TTLM_MAX_CNT 2 +#define IEEE80211_TTLM_CONTROL_DIRECTION 0x03 +#define IEEE80211_TTLM_CONTROL_DEF_LINK_MAP 0x04 +#define IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT 0x08 +#define IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT 0x10 +#define IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE 0x20 + +#define IEEE80211_TTLM_DIRECTION_DOWN 0 +#define IEEE80211_TTLM_DIRECTION_UP 1 +#define IEEE80211_TTLM_DIRECTION_BOTH 2 + +/** + * struct ieee80211_ttlm_elem - TID-To-Link Mapping element + * + * Defined in section 9.4.2.314 in P802.11be_D4 + * + * @control: the first part of control field + * @optional: the second part of control field + */ +struct ieee80211_ttlm_elem { + u8 control; + u8 optional[]; +} __packed; + struct ieee80211_mgmt { __le16 frame_control; __le16 duration; @@ -3618,6 +3642,7 @@ enum ieee80211_eid_ext { WLAN_EID_EXT_EHT_OPERATION = 106, WLAN_EID_EXT_EHT_MULTI_LINK = 107, WLAN_EID_EXT_EHT_CAPABILITY = 108, + WLAN_EID_EXT_TID_TO_LINK_MAPPING = 109, WLAN_EID_EXT_BANDWIDTH_INDICATION = 135, }; @@ -5155,6 +5180,39 @@ static inline bool ieee80211_mle_reconf_sta_prof_size_ok(const u8 *data, fixed + prof->sta_info_len - 1 <= len; } +static inline bool ieee80211_tid_to_link_map_size_ok(const u8 *data, size_t len) +{ + const struct ieee80211_ttlm_elem *t2l = (const void *)data; + u8 control, fixed = sizeof(*t2l), elem_len = 0; + + if (len < fixed) + return false; + + control = t2l->control; + + if (control & IEEE80211_TTLM_CONTROL_SWITCH_TIME_PRESENT) + elem_len += 2; + if (control & IEEE80211_TTLM_CONTROL_EXPECTED_DUR_PRESENT) + elem_len += 3; + + if (!(control & IEEE80211_TTLM_CONTROL_DEF_LINK_MAP)) { + u8 bm_size; + + elem_len += 1; + if (len < fixed + elem_len) + return false; + + if (control & IEEE80211_TTLM_CONTROL_LINK_MAP_SIZE) + bm_size = 1; + else + bm_size = 2; + + elem_len += hweight8(t2l->optional[0]) * bm_size; + } + + return len >= fixed + elem_len; +} + #define for_each_mle_subelement(_elem, _data, _len) \ if (ieee80211_mle_size_ok(_data, _len)) \ for_each_element(_elem, \ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 6c56ec42dde9..3209c7c11207 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1678,6 +1678,7 @@ struct ieee802_11_elems { const struct ieee80211_multi_link_elem *ml_basic; const struct ieee80211_multi_link_elem *ml_reconf; const struct ieee80211_bandwidth_indication *bandwidth_indication; + const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT]; /* length of them, respectively */ u8 ext_capab_len; @@ -1711,6 +1712,8 @@ struct ieee802_11_elems { /* The reconfiguration Multi-Link element in the original IEs */ const struct element *ml_reconf_elem; + u8 ttlm_num; + /* * store the per station profile pointer and length in case that the * parsing also handled Multi-Link element parsing for a specific link diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 97c5823da0eb..98a3bffc6991 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -995,6 +995,14 @@ ieee80211_parse_extension_element(u32 *crc, elems->bandwidth_indication = data; calc_crc = true; break; + case WLAN_EID_EXT_TID_TO_LINK_MAPPING: + calc_crc = true; + if (ieee80211_tid_to_link_map_size_ok(data, len) && + elems->ttlm_num < ARRAY_SIZE(elems->ttlm)) { + elems->ttlm[elems->ttlm_num] = (void *)data; + elems->ttlm_num++; + } + break; } if (crc && calc_crc)