From patchwork Tue Jun 14 17:46:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ashok Raj Nagarajan X-Patchwork-Id: 9176365 X-Patchwork-Delegate: kvalo@adurom.com 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 1B4836021C for ; Tue, 14 Jun 2016 17:47:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10BF328047 for ; Tue, 14 Jun 2016 17:47:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0591D2823D; Tue, 14 Jun 2016 17:47:06 +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=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A6F1128047 for ; Tue, 14 Jun 2016 17:47:05 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1bCsQX-0004V2-8W; Tue, 14 Jun 2016 17:47:01 +0000 Received: from wolverine01.qualcomm.com ([199.106.114.254]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1bCsQV-0004NT-Tu for ath10k@lists.infradead.org; Tue, 14 Jun 2016 17:47:00 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qti.qualcomm.com; i=@qti.qualcomm.com; q=dns/txt; s=qcdkim; t=1465926419; x=1497462419; h=from:to:cc:subject:date:message-id:mime-version; bh=RHryKwlwCKMmzGm8w2KE7g9gY1rDe01bwoQbCeRrQcQ=; b=ybBYiWJ3LvyXngmyvuDdJD2rSF1zWXgl/hJMXnGdgcpBYmN8jWzVhwFX WHPgUOOrpf+OeuVlZ44stcq/HsAtuBQXlCnrFwJIrYrgQ5dS1w89TusZI od3XLVj/V5oygzSI1GR1mWHtpdegYaVQwmdB0wJxct3lmwfngLfCELRNy I=; X-IronPort-AV: E=Sophos;i="5.26,471,1459839600"; d="scan'208";a="200481701" Received: from unknown (HELO Ironmsg03-L.qualcomm.com) ([10.53.140.110]) by wolverine01.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 14 Jun 2016 10:46:39 -0700 X-IronPort-AV: E=McAfee;i="5700,7163,8196"; a="1166566729" Received: from nasanexm02d.na.qualcomm.com ([10.85.0.44]) by Ironmsg03-L.qualcomm.com with ESMTP/TLS/RC4-SHA; 14 Jun 2016 10:46:39 -0700 Received: from aphydexm01f.ap.qualcomm.com (10.252.127.15) by NASANEXM02D.na.qualcomm.com (10.85.0.44) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Tue, 14 Jun 2016 10:46:38 -0700 Received: from qcmail1.qualcomm.com (10.80.80.8) by aphydexm01f.ap.qualcomm.com (10.252.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Tue, 14 Jun 2016 23:16:29 +0530 Received: by qcmail1.qualcomm.com (sSMTP sendmail emulation); Tue, 14 Jun 2016 23:16:04 +0530 From: Ashok Raj Nagarajan To: Subject: [PATCH] iw: Add support for controlling tx power for per station Date: Tue, 14 Jun 2016 23:16:00 +0530 Message-ID: <1465926360-6561-1-git-send-email-arnagara@qti.qualcomm.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01C.na.qualcomm.com (10.85.0.83) To aphydexm01f.ap.qualcomm.com (10.252.127.15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160614_104700_011576_0964A1CA X-CRM114-Status: GOOD ( 10.45 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ashok Raj Nagarajan , arnagara@codeaurora.org, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch allows userspace to set transmit power, in mBm units, to a station associated to the AP. To set a limit tx power of 2000 mBm: iw wlan0 station set txpwr limit 2000 To revert the user defined tx power for a station: iw wlan0 station set txpwr auto Signed-off-by: Ashok Raj Nagarajan --- station.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/station.c b/station.c index f3e3da8..8364593 100644 --- a/station.c +++ b/station.c @@ -569,6 +569,7 @@ COMMAND(station, del, " [subtype ] [reason-code ]", static const struct cmd *station_set_plink; static const struct cmd *station_set_vlan; static const struct cmd *station_set_mesh_power_mode; +static const struct cmd *station_set_txpwr; static const struct cmd *select_station_cmd(int argc, char **argv) { @@ -580,6 +581,8 @@ static const struct cmd *select_station_cmd(int argc, char **argv) return station_set_vlan; if (strcmp(argv[1], "mesh_power_mode") == 0) return station_set_mesh_power_mode; + if (strcmp(argv[1], "txpwr") == 0) + return station_set_txpwr; return NULL; } @@ -731,6 +734,72 @@ COMMAND_ALIAS(station, set, " mesh_power_mode " "Set link-specific mesh power mode for this station", select_station_cmd, station_set_mesh_power_mode); +static int handle_station_set_txpwr(struct nl80211_state *state, + struct nl_msg *msg, + int argc, char **argv, + enum id_input id) +{ + enum nl80211_tx_power_setting type; + unsigned char mac_addr[ETH_ALEN]; + unsigned int sta_txpwr = 0; + char *err = NULL; + + if (argc != 3 && argc != 4) + return 1; + + if (mac_addr_a2n(mac_addr, argv[0])) { + fprintf(stderr, "invalid mac address\n"); + return 2; + } + + NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); + argc--; + argv++; + + if (strcmp("txpwr", argv[0]) != 0) + return 1; + argc--; + argv++; + + if (!strcmp(argv[0], "auto")) + type = NL80211_TX_POWER_AUTOMATIC; + else if (!strcmp(argv[0], "limit")) + type = NL80211_TX_POWER_LIMITED; + else { + printf("Invalid parameter: %s\n", argv[0]); + return 2; + } + + NLA_PUT_U32(msg, NL80211_ATTR_STA_TX_POWER_SETTING, type); + + if (type != NL80211_TX_POWER_AUTOMATIC) { + if (argc != 2) { + printf("Missing TX power level argument.\n"); + return 2; + } + + argc--; + argv++; + + sta_txpwr = strtoul(argv[0], &err, 0); + NLA_PUT_U32(msg, NL80211_ATTR_STA_TX_POWER, sta_txpwr); + } + + argc--; + argv++; + + if (argc) + return 1; + + return 0; + nla_put_failure: + return -ENOBUFS; +} +COMMAND_ALIAS(station, set, " txpwr []", + NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_txpwr, + "Set Tx power for this station.", + select_station_cmd, station_set_txpwr); + static int handle_station_dump(struct nl80211_state *state, struct nl_msg *msg, int argc, char **argv,