From patchwork Wed Jan 17 07:18:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tamizh chelvam X-Patchwork-Id: 10168671 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 84CDC601E7 for ; Wed, 17 Jan 2018 07:21:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6CD15281E1 for ; Wed, 17 Jan 2018 07:21:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 61341281F9; Wed, 17 Jan 2018 07:21:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3701628210 for ; Wed, 17 Jan 2018 07:21:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752164AbeAQHVp (ORCPT ); Wed, 17 Jan 2018 02:21:45 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:57392 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752041AbeAQHVo (ORCPT ); Wed, 17 Jan 2018 02:21:44 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id DCF9660A00; Wed, 17 Jan 2018 07:21:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1516173703; bh=YmfmXSGbSNJ7fPCUrZiSIfBQjYtc0uajkYSXqTb7WCE=; h=From:To:Cc:Subject:Date:From; b=ToBcdp75IzSjeBUqzm7HsmnmoerPB81nX6TgLJSCGlGFj68up5nSNuM0kqYIxKsCF SKOjdKbWwECvGcwJfaUFcS7UyruuDmDx+dL1scNpCcE+g1jfg4lghd+6zTeKaEctM7 gQ79+KstaanOltDedDOmmvvIWcfsn8g/RFTScg6U= Received: from cheath10p342229-lin.qca.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tamizhr@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id D4D49605A4; Wed, 17 Jan 2018 07:21:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1516173703; bh=YmfmXSGbSNJ7fPCUrZiSIfBQjYtc0uajkYSXqTb7WCE=; h=From:To:Cc:Subject:Date:From; b=ToBcdp75IzSjeBUqzm7HsmnmoerPB81nX6TgLJSCGlGFj68up5nSNuM0kqYIxKsCF SKOjdKbWwECvGcwJfaUFcS7UyruuDmDx+dL1scNpCcE+g1jfg4lghd+6zTeKaEctM7 gQ79+KstaanOltDedDOmmvvIWcfsn8g/RFTScg6U= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D4D49605A4 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=tamizhr@codeaurora.org From: tamizhr@codeaurora.org To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, tamizhr@qti.qualcomm.com, Tamizh chelvam Subject: [PATCH 1/2] cfg80211: Add support to notify station's opmode change to userspace Date: Wed, 17 Jan 2018 12:48:27 +0530 Message-Id: <1516173508-16528-1-git-send-email-tamizhr@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tamizh chelvam ht/vht action frames will be sent to AP from station to notify change of its ht/vht opmode(max bandwidth, smps mode or nss) modified values. Currently these valuse used by driver/firmware for rate control algorithm. This patch introduces NL80211_CMD_STA_OPMODE_CHANGED command to notify those modified/current supported values(max bandwidth, smps mode, max nss) to userspace application. This will be useful for the application like steering, which closely monitoring station's capability changes. Since the application has taken these values during station association. Signed-off-by: Tamizh chelvam --- include/net/cfg80211.h | 32 +++++++++++++++++++++++++ include/uapi/linux/nl80211.h | 12 ++++++++++ net/wireless/nl80211.c | 56 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 81174f9..d796160 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3517,6 +3517,20 @@ enum wiphy_vendor_command_flags { }; /** + * enum wiphy_opmode_info_flag - opmode information flags + * + * @MAX_BW_CHANGED: Max Bandwidth changed + * @SMPS_MODE_CHANGED: SMPS mode changed + * @N_SS_CHANGED: max N_SS (number of spatial streams) changed + * + */ +enum wiphy_opmode_info_flag { + MAX_BW_CHANGED = BIT(0), + SMPS_MODE_CHANGED = BIT(1), + N_SS_CHANGED = BIT(2), +}; + +/** * struct wiphy_vendor_command - vendor command definition * @info: vendor command identifying information, as used in nl80211 * @flags: flags, see &enum wiphy_vendor_command_flags @@ -5685,6 +5699,24 @@ void cfg80211_radar_event(struct wiphy *wiphy, struct cfg80211_chan_def *chandef, gfp_t gfp); /** + * cfg80211_sta_opmode_change_notify - Station's SMPS mode, rx_nss and + * max bandwidth change event + * @dev: network device + * @mac: MAC address of a station which opmode got modified + * @changed: contains value from &enum wiphy_opmode_info_flag + * @smps_mode: New SMPS mode of a station + * @bw: new max bandwidth value of a station + * @rx_nss: new rx_nss value of a station + * @gfp: context flags + * + * This function is called when station's opmode modified via action frame. + */ +void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, + enum wiphy_opmode_info_flag changed, + u8 smps_mode, u8 bw, u8 rx_nss, + gfp_t gfp); + +/** * cfg80211_cac_event - Channel availability check (CAC) event * @netdev: network device * @chandef: chandef for the current channel diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index c587a61..5d69717 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -992,6 +992,11 @@ * * @NL80211_CMD_RELOAD_REGDB: Request that the regdb firmware file is reloaded. * + * @NL80211_CMD_STA_OPMODE_CHANGED: An event that notify station's + * ht opmode or vht opmode changes. This will use &NL80211_ATTR_SMPS_MODE, + * &NL80211_ATTR_CHANNEL_WIDTH, &NL80211_ATTR_NSS to send the event to + * userspace. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -1198,6 +1203,8 @@ enum nl80211_commands { NL80211_CMD_RELOAD_REGDB, + NL80211_CMD_STA_OPMODE_CHANGED, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -2153,6 +2160,9 @@ enum nl80211_commands { * @NL80211_ATTR_PMKR0_NAME: PMK-R0 Name for offloaded FT. * @NL80211_ATTR_PORT_AUTHORIZED: (reserved) * + * @NL80211_ATTR_NSS: Station's New/updated RX_NSS value notified using this + * u8 attribute. This is used with %NL80211_CMD_STA_OPMODE_CHANGED. + * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -2579,6 +2589,8 @@ enum nl80211_attrs { NL80211_ATTR_PMKR0_NAME, NL80211_ATTR_PORT_AUTHORIZED, + NL80211_ATTR_NSS, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b48eb6d..330a9ad 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -14887,6 +14887,62 @@ void cfg80211_ch_switch_started_notify(struct net_device *dev, nlmsg_free(msg); } +void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, + enum wiphy_opmode_info_flag changed, + u8 smps, u8 bw, u8 rx_nss, gfp_t gfp) +{ + struct sk_buff *msg; + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + void *hdr; + + if (!mac) + return; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED); + if (!hdr) { + nlmsg_free(msg); + return; + } + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) + goto nla_put_failure; + + if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) + goto nla_put_failure; + + if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) + goto nla_put_failure; + + if ((changed & SMPS_MODE_CHANGED) && + nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, smps)) + goto nla_put_failure; + + if ((changed & MAX_BW_CHANGED) && + nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, bw)) + goto nla_put_failure; + + if ((changed & N_SS_CHANGED) && + nla_put_u8(msg, NL80211_ATTR_NSS, rx_nss)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + + genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, + NL80211_MCGRP_MLME, gfp); + + return; + +nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} +EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify); + void cfg80211_probe_status(struct net_device *dev, const u8 *addr, u64 cookie, bool acked, gfp_t gfp) {