From patchwork Fri Nov 18 10:37:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prameela Rani Garnepudi X-Patchwork-Id: 9436189 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 44F6D60238 for ; Fri, 18 Nov 2016 10:40:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 61D9D293D6 for ; Fri, 18 Nov 2016 10:40:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 55B1E293D3; Fri, 18 Nov 2016 10:40:20 +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=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, 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 B30E2293D3 for ; Fri, 18 Nov 2016 10:40:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752018AbcKRKkR (ORCPT ); Fri, 18 Nov 2016 05:40:17 -0500 Received: from mail-pg0-f67.google.com ([74.125.83.67]:34244 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751495AbcKRKkQ (ORCPT ); Fri, 18 Nov 2016 05:40:16 -0500 Received: by mail-pg0-f67.google.com with SMTP id e9so19988500pgc.1 for ; Fri, 18 Nov 2016 02:40:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=K5cWGs7rD5lHIuYQK8JFSm+XSgDL6g+LTW49vN9di70=; b=WUktdio9qMihgPHWRQtSLgMWfFviLJP/RYRR9MkiX6Z4d0OgGXr3ri5CrWDPPk97b4 dS4njzfLZ/5aWFTn0eFO2PQaGoLxhgbbIZd4p9Bwp/b2Q05xzb4Jm6pb+yYNCfaTxjje /avpSUzaKywLi86KZVw5jJdyYkbndSOVOJ20Ct/2Wwp9fKAqLXBHvqNQfmYaPcdbh1mT JiQFzFEqwyzfB3njgt2FKAUf2+DhV+XtRskoBgk86sGeT8BUbs7UWawmpb62aloPirK1 vsTKR2uEEe9xmL3tokrDcpcK3yiM9UvTzelO6wvfFZWuxyxmqtShRO6ZL7EWSNKs08D2 OpVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=K5cWGs7rD5lHIuYQK8JFSm+XSgDL6g+LTW49vN9di70=; b=FOp/RRJf6iwC6LSuQKuzB+aV6TIoqruurpbbUixCXcr4MkXCgY4XN2PvzHWby4U85x rLp1z8oBvFpjpnKbStzN9BIqIWJzxmjVSyHAgsR2pk9X6DDfoTM5KDqUwnJCTIwC8Zve nyoErjMtdhFmAzAR3PJf8MaUgVb+7cP60bCVVJQOlorpNigx8rwvPVLXrJ9P4ihu1ECy o5Z6GQKnibJl4jUUY/WuwvHoidKu0K0ernA+yggixijZ9wAAvsTd4hIMUAXKXhE0/Ppf PgNtDK5SMJh8Gdk+2XnOA6pGA4jhU26a4QyWMOdeLLVqPyAQyO9p/VfbvJIEeMs8ujEL OtMw== X-Gm-Message-State: ABUngvdoZvvvmm1mGC0w4KbEBMcf+Ir4LUo/jrCHoVm8tMyrDnQgS29Wqeq/aCUwhQsBSA== X-Received: by 10.99.171.65 with SMTP id k1mr17745950pgp.87.1479465615920; Fri, 18 Nov 2016 02:40:15 -0800 (PST) Received: from lapt225.localdomain ([203.196.161.90]) by smtp.gmail.com with ESMTPSA id q12sm16534074pfj.18.2016.11.18.02.40.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 18 Nov 2016 02:40:15 -0800 (PST) From: Prameela Rani Garnepudi To: linux-wireless@vger.kernel.org Cc: kvalo@codeaurora.org, johannes.berg@intel.com, hofrat@osadl.org, xypron.glpk@gmx.de, prameela.garnepudi@redpinesignals.com, Prameela Rani Garnepudi Subject: [PATCH 1/4] rsi: Add support to filter rx frames Date: Fri, 18 Nov 2016 16:07:09 +0530 Message-Id: <1479465429-2412-1-git-send-email-prameela.j04cs@gmail.com> X-Mailer: git-send-email 2.4.11 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 Filtering rx frames after connection in station mode avoids the overhead of processing un-necessary frames. Hence rx filter frame is added which can be configured to device at suitable times. Signed-off-by: Prameela Rani Garnepudi --- drivers/net/wireless/rsi/rsi_91x_mac80211.c | 16 +++++++++++++- drivers/net/wireless/rsi/rsi_91x_mgmt.c | 33 +++++++++++++++++++++++++++++ drivers/net/wireless/rsi/rsi_mgmt.h | 11 ++++++++++ 3 files changed, 59 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c index dbb2389..fdd31df 100644 --- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c +++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c @@ -264,6 +264,8 @@ static int rsi_mac80211_start(struct ieee80211_hw *hw) common->iface_down = false; mutex_unlock(&common->mutex); + rsi_send_rx_filter_frame(common, 0); + return 0; } @@ -456,11 +458,19 @@ static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw, { struct rsi_hw *adapter = hw->priv; struct rsi_common *common = adapter->priv; + u16 rx_filter_word = 0; mutex_lock(&common->mutex); if (changed & BSS_CHANGED_ASSOC) { rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n", __func__, bss_conf->assoc); + if (bss_conf->assoc) { + /* Send the RX filter frame */ + rx_filter_word = (ALLOW_DATA_ASSOC_PEER | + ALLOW_CTRL_ASSOC_PEER | + ALLOW_MGMT_ASSOC_PEER); + rsi_send_rx_filter_frame(common, rx_filter_word); + } rsi_inform_bss_status(common, bss_conf->assoc, bss_conf->bssid, @@ -998,6 +1008,7 @@ static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, struct rsi_common *common = adapter->priv; mutex_lock(&common->mutex); + /* Resetting all the fields to default values */ common->bitrate_mask[NL80211_BAND_2GHZ] = 0; common->bitrate_mask[NL80211_BAND_5GHZ] = 0; @@ -1007,8 +1018,11 @@ static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw, common->vif_info[0].seq_start = 0; common->secinfo.ptk_cipher = 0; common->secinfo.gtk_cipher = 0; - mutex_unlock(&common->mutex); + rsi_send_rx_filter_frame(common, 0); + + mutex_unlock(&common->mutex); + return 0; } diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c index 35c14cc..ef4b05a 100644 --- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c +++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c @@ -1240,6 +1240,39 @@ int rsi_send_block_unblock_frame(struct rsi_common *common, bool block_event) } +/** + * rsi_send_rx_filter_frame() - Sends a frame to filter the RX packets + * + * @common: Pointer to the driver private structure. + * @rx_filter_word: Flags of filter packets + * + * @Return: 0 on success, -1 on failure. + */ +int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word) +{ + struct rsi_mac_frame *cmd_frame; + struct sk_buff *skb; + + rsi_dbg(MGMT_TX_ZONE, "Sending RX filter frame\n"); + + skb = dev_alloc_skb(FRAME_DESC_SZ); + if (!skb) { + rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n", + __func__); + return -ENOMEM; + } + + memset(skb->data, 0, FRAME_DESC_SZ); + cmd_frame = (struct rsi_mac_frame *)skb->data; + + cmd_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12); + cmd_frame->desc_word[1] = cpu_to_le16(SET_RX_FILTER); + cmd_frame->desc_word[4] = cpu_to_le16(rx_filter_word); + + skb_put(skb, FRAME_DESC_SZ); + + return rsi_send_internal_mgmt_frame(common, skb); +} /** * rsi_handle_ta_confirm_type() - This function handles the confirm frames. diff --git a/drivers/net/wireless/rsi/rsi_mgmt.h b/drivers/net/wireless/rsi/rsi_mgmt.h index 3741173..40e8f8e 100644 --- a/drivers/net/wireless/rsi/rsi_mgmt.h +++ b/drivers/net/wireless/rsi/rsi_mgmt.h @@ -140,6 +140,16 @@ #define RSI_SUPP_FILTERS (FIF_ALLMULTI | FIF_PROBE_REQ |\ FIF_BCN_PRBRESP_PROMISC) + +/* Rx filter word definitions */ +#define PROMISCOUS_MODE BIT(0) +#define ALLOW_DATA_ASSOC_PEER BIT(1) +#define ALLOW_MGMT_ASSOC_PEER BIT(2) +#define ALLOW_CTRL_ASSOC_PEER BIT(3) +#define DISALLOW_BEACONS BIT(4) +#define ALLOW_CONN_PEER_MGMT_WHILE_BUF_FULL BIT(5) +#define DISALLOW_BROADCAST_DATA BIT(6) + enum opmode { STA_OPMODE = 1, AP_OPMODE = 2 @@ -306,4 +316,5 @@ void rsi_core_xmit(struct rsi_common *common, struct sk_buff *skb); int rsi_send_mgmt_pkt(struct rsi_common *common, struct sk_buff *skb); int rsi_send_data_pkt(struct rsi_common *common, struct sk_buff *skb); int rsi_band_check(struct rsi_common *common); +int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word); #endif