From patchwork Fri Nov 18 21:44:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jes Sorensen X-Patchwork-Id: 9437421 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 48F5B60238 for ; Fri, 18 Nov 2016 21:44:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3A9AD299DD for ; Fri, 18 Nov 2016 21:44:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2F98429A22; Fri, 18 Nov 2016 21:44:44 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI 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 BA52E299DD for ; Fri, 18 Nov 2016 21:44:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752847AbcKRVoh (ORCPT ); Fri, 18 Nov 2016 16:44:37 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60242 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752761AbcKRVob (ORCPT ); Fri, 18 Nov 2016 16:44:31 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AA8907A4A2; Fri, 18 Nov 2016 21:44:30 +0000 (UTC) Received: from ultrasam.trained-monkey.org (ovpn-116-132.phx2.redhat.com [10.3.116.132]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id uAILiUFV020169; Fri, 18 Nov 2016 16:44:30 -0500 Received: from carbonite.redhat.com (localhost.localdomain [127.0.0.1]) by ultrasam.trained-monkey.org (Postfix) with ESMTP id 69F9B18133D6D; Fri, 18 Nov 2016 16:44:28 -0500 (EST) From: Jes.Sorensen@redhat.com To: linux-wireless@vger.kernel.org Cc: kvalo@codeaurora.org, Larry.Finger@lwfinger.net, Jes Sorensen Subject: [PATCH 5/7] rtl8xxxu: Obtain RTS rates from mac80211 Date: Fri, 18 Nov 2016 16:44:26 -0500 Message-Id: <1479505468-29383-6-git-send-email-Jes.Sorensen@redhat.com> In-Reply-To: <1479505468-29383-1-git-send-email-Jes.Sorensen@redhat.com> References: <1479505468-29383-1-git-send-email-Jes.Sorensen@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Fri, 18 Nov 2016 21:44:30 +0000 (UTC) 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: Jes Sorensen Use the mac80211 provided rate for RTS rather than the hard coded 24Mbps as suggested by the vendor drivers. Reported-by: Andrea Merello Signed-off-by: Jes Sorensen --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 6 +-- .../net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 46 ++++++++++++++-------- 2 files changed, 32 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h index 08d587a..bc3c990 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h @@ -1340,7 +1340,7 @@ struct rtl8xxxu_fileops { void (*fill_txdesc) (struct ieee80211_hdr *hdr, struct rtl8xxxu_txdesc32 *tx_desc, u32 rate, u16 rate_flag, bool sgi, bool short_preamble, - bool ampdu_enable); + bool ampdu_enable, u32 rts_rate); int writeN_block_size; int rx_agg_buf_size; char tx_desc_size; @@ -1437,11 +1437,11 @@ bool rtl8xxxu_gen2_simularity_compare(struct rtl8xxxu_priv *priv, void rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr, struct rtl8xxxu_txdesc32 *tx_desc, u32 rate, u16 rate_flag, bool sgi, bool short_preamble, - bool ampdu_enable); + bool ampdu_enable, u32 rts_rate); void rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr, struct rtl8xxxu_txdesc32 *tx_desc32, u32 rate, u16 rate_flag, bool sgi, bool short_preamble, - bool ampdu_enable); + bool ampdu_enable, u32 rts_rate); extern struct rtl8xxxu_fileops rtl8192cu_fops; extern struct rtl8xxxu_fileops rtl8192eu_fops; diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index a5e6ec2..a4ac557 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -4762,7 +4762,7 @@ void rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr, struct rtl8xxxu_txdesc32 *tx_desc, u32 rate, u16 rate_flag, bool sgi, bool short_preamble, - bool ampdu_enable) + bool ampdu_enable, u32 rts_rate) { u16 seq_number; @@ -4796,15 +4796,16 @@ rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr, if (sgi) tx_desc->txdw5 |= cpu_to_le32(TXDESC32_SHORT_GI); + /* + * rts_rate is zero if RTS/CTS or CTS to SELF are not enabled + */ + tx_desc->txdw4 |= cpu_to_le32(rts_rate << TXDESC32_RTS_RATE_SHIFT); if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) { - /* - * Use RTS rate 24M - does the mac80211 tell - * us which to use? - */ - tx_desc->txdw4 |= cpu_to_le32(DESC_RATE_24M << - TXDESC32_RTS_RATE_SHIFT); tx_desc->txdw4 |= cpu_to_le32(TXDESC32_RTS_CTS_ENABLE); tx_desc->txdw4 |= cpu_to_le32(TXDESC32_HW_RTS_ENABLE); + } else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) { + tx_desc->txdw4 |= cpu_to_le32(TXDESC32_CTS_SELF_ENABLE); + tx_desc->txdw4 |= cpu_to_le32(TXDESC32_HW_RTS_ENABLE); } } @@ -4816,7 +4817,7 @@ void rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr, struct rtl8xxxu_txdesc32 *tx_desc32, u32 rate, u16 rate_flag, bool sgi, bool short_preamble, - bool ampdu_enable) + bool ampdu_enable, u32 rts_rate) { struct rtl8xxxu_txdesc40 *tx_desc40; u16 seq_number; @@ -4849,15 +4850,19 @@ rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr, if (short_preamble) tx_desc40->txdw5 |= cpu_to_le32(TXDESC40_SHORT_PREAMBLE); + tx_desc40->txdw4 |= cpu_to_le32(rts_rate << TXDESC40_RTS_RATE_SHIFT); + /* + * rts_rate is zero if RTS/CTS or CTS to SELF are not enabled + */ if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) { - /* - * Use RTS rate 24M - does the mac80211 tell - * us which to use? - */ - tx_desc40->txdw4 |= cpu_to_le32(DESC_RATE_24M << - TXDESC40_RTS_RATE_SHIFT); tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_RTS_CTS_ENABLE); tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_HW_RTS_ENABLE); + } else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) { + /* + * For some reason the vendor driver doesn't set + * TXDESC40_HW_RTS_ENABLE for CTS to SELF + */ + tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_CTS_SELF_ENABLE); } } @@ -4874,7 +4879,7 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw, struct ieee80211_sta *sta = NULL; struct ieee80211_vif *vif = tx_info->control.vif; struct device *dev = &priv->udev->dev; - u32 queue, rate; + u32 queue, rate, rts_rate; u16 pktlen = skb->len; u16 seq_number; u16 rate_flag = tx_info->control.rates[0].flags; @@ -4974,10 +4979,17 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw, (sta && vif && vif->bss_conf.use_short_preamble)) short_preamble = true; + if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) + rts_rate = ieee80211_get_rts_cts_rate(hw, tx_info)->hw_value; + else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) + rts_rate = ieee80211_get_rts_cts_rate(hw, tx_info)->hw_value; + else + rts_rate = 0; + seq_number = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); - priv->fops->fill_txdesc(hdr, tx_desc, rate, rate_flag, - sgi, short_preamble, ampdu_enable); + priv->fops->fill_txdesc(hdr, tx_desc, rate, rate_flag, sgi, + short_preamble, ampdu_enable, rts_rate); rtl8xxxu_calc_tx_desc_csum(tx_desc);