From patchwork Thu Sep 21 08:58:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 725210 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 BB17AE7D0A5 for ; Thu, 21 Sep 2023 19:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231254AbjIUTEa (ORCPT ); Thu, 21 Sep 2023 15:04:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229532AbjIUTEG (ORCPT ); Thu, 21 Sep 2023 15:04:06 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76A24325CA for ; Thu, 21 Sep 2023 10:50:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695318633; x=1726854633; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vmoprl1oKJOloO5ZP5YHnozZWXz3ptS69tuc1kG9yC0=; b=LZpciN4HBVXC4pNvJPD/Vaw/NdHvZf9HqAdD8CsCUiUguRcP+NSGSb1L H6q/PO+nJSVzszvoKgz55X81AGW8xhUUt++r17+tPnTTAtstcl4aajkrZ WOvzhygBW1mWo0RB59S140BWLwKEmcrqtfPJv1Vax2WRkYGluWUzGNBG4 6rZWhzSGYABYmc0+ej52AdOcJZNG576sT3z+ClUopkNxPoln2Ml1DBp2p qAdjgVPdTOxvaadSb2A404ZCECeQjXVYJXYUnImdDUQhUESN15/4uzZdu nK9RNVW+UO6dnnDwxm+zSdzsdAqZkuQjeSbdEqhhAwamFnGZI1vKHJ/F5 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="384305407" X-IronPort-AV: E=Sophos;i="6.03,165,1694761200"; d="scan'208";a="384305407" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2023 01:59:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="740545614" X-IronPort-AV: E=Sophos;i="6.03,165,1694761200"; d="scan'208";a="740545614" Received: from rchuwer-mobl.ger.corp.intel.com (HELO ggreenma-mobl2.lan) ([10.214.229.163]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2023 01:59:02 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg , Gregory Greenman Subject: [PATCH 09/12] wifi: iwlwifi: mvm: refactor TX rate handling Date: Thu, 21 Sep 2023 11:58:07 +0300 Message-Id: <20230921110727.dc920357bad0.I5ee8512fb63f0423c1da35b59fea8811d60c1ad3@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230921085810.693048-1-gregory.greenman@intel.com> References: <20230921085810.693048-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Refactor the injection and other frame TX rate handling to always return the injection rate directly, by factoring the legay rate portion out into a new function called in the two relevant places (injection and non-injection). Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman --- drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 78 ++++++++++++--------- 1 file changed, 45 insertions(+), 33 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index 6e2e52936761..c398e04b597c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -262,6 +262,38 @@ static u32 iwl_mvm_get_tx_ant(struct iwl_mvm *mvm, return BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; } +static u32 iwl_mvm_convert_rate_idx(struct iwl_mvm *mvm, + struct ieee80211_tx_info *info, + int rate_idx) +{ + u32 rate_flags = 0; + u8 rate_plcp; + bool is_cck; + + /* if the rate isn't a well known legacy rate, take the lowest one */ + if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) + rate_idx = iwl_mvm_mac_ctxt_get_lowest_rate(mvm, + info, + info->control.vif); + + /* Get PLCP rate for tx_cmd->rate_n_flags */ + rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx); + is_cck = (rate_idx >= IWL_FIRST_CCK_RATE) && + (rate_idx <= IWL_LAST_CCK_RATE); + + /* Set CCK or OFDM flag */ + if (iwl_fw_lookup_cmd_ver(mvm->fw, TX_CMD, 0) > 8) { + if (!is_cck) + rate_flags |= RATE_MCS_LEGACY_OFDM_MSK; + else + rate_flags |= RATE_MCS_CCK_MSK; + } else if (is_cck) { + rate_flags |= RATE_MCS_CCK_MSK_V1; + } + + return (u32)rate_plcp | rate_flags; +} + static u32 iwl_mvm_get_inject_tx_rate(struct iwl_mvm *mvm, struct ieee80211_tx_info *info) { @@ -288,6 +320,9 @@ static u32 iwl_mvm_get_inject_tx_rate(struct iwl_mvm *mvm, result |= u32_encode_bits(2, RATE_MCS_CHAN_WIDTH_MSK_V1); else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) result |= u32_encode_bits(3, RATE_MCS_CHAN_WIDTH_MSK_V1); + + if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 6) + result = iwl_new_rate_from_v1(result); } else if (rate->flags & IEEE80211_TX_RC_MCS) { result = RATE_MCS_HT_MSK_V1; result |= u32_encode_bits(rate->idx, @@ -301,12 +336,15 @@ static u32 iwl_mvm_get_inject_tx_rate(struct iwl_mvm *mvm, result |= RATE_MCS_LDPC_MSK_V1; if (u32_get_bits(info->flags, IEEE80211_TX_CTL_STBC)) result |= RATE_MCS_STBC_MSK; + + if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 6) + result = iwl_new_rate_from_v1(result); } else { - return 0; + int rate_idx = info->control.rates[0].idx; + + result = iwl_mvm_convert_rate_idx(mvm, info, rate_idx); } - if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 6) - return iwl_new_rate_from_v1(result); return result; } @@ -315,17 +353,11 @@ static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, struct ieee80211_sta *sta, __le16 fc) { int rate_idx = -1; - u8 rate_plcp; - u32 rate_flags = 0; - bool is_cck; - if (unlikely(info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT)) { - u32 result = iwl_mvm_get_inject_tx_rate(mvm, info); + if (unlikely(info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT)) + return iwl_mvm_get_inject_tx_rate(mvm, info); - if (result) - return result; - rate_idx = info->control.rates[0].idx; - } else if (!ieee80211_hw_check(mvm->hw, HAS_RATE_CONTROL)) { + if (!ieee80211_hw_check(mvm->hw, HAS_RATE_CONTROL)) { /* info->control is only relevant for non HW rate control */ /* HT rate doesn't make sense for a non data frame */ @@ -350,27 +382,7 @@ static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); } - /* if the rate isn't a well known legacy rate, take the lowest one */ - if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) - rate_idx = iwl_mvm_mac_ctxt_get_lowest_rate(mvm, - info, - info->control.vif); - - /* Get PLCP rate for tx_cmd->rate_n_flags */ - rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx); - is_cck = (rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE); - - /* Set CCK or OFDM flag */ - if (iwl_fw_lookup_cmd_ver(mvm->fw, TX_CMD, 0) > 8) { - if (!is_cck) - rate_flags |= RATE_MCS_LEGACY_OFDM_MSK; - else - rate_flags |= RATE_MCS_CCK_MSK; - } else if (is_cck) { - rate_flags |= RATE_MCS_CCK_MSK_V1; - } - - return (u32)rate_plcp | rate_flags; + return iwl_mvm_convert_rate_idx(mvm, info, rate_idx); } static u32 iwl_mvm_get_tx_rate_n_flags(struct iwl_mvm *mvm,