From patchwork Thu Jul 11 14:09:06 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Wunderlich X-Patchwork-Id: 2826363 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9F0409F756 for ; Thu, 11 Jul 2013 14:09:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6E4F8201F4 for ; Thu, 11 Jul 2013 14:09:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD03A201E4 for ; Thu, 11 Jul 2013 14:09:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755049Ab3GKOJV (ORCPT ); Thu, 11 Jul 2013 10:09:21 -0400 Received: from nick.hrz.tu-chemnitz.de ([134.109.228.11]:58581 "EHLO nick.hrz.tu-chemnitz.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754774Ab3GKOJS (ORCPT ); Thu, 11 Jul 2013 10:09:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tu-chemnitz.de; s=dkim2010; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=SDGlo1Xm44jFf9c3aJrRey00kutr9sZM1mGX4Jx9ooQ=; b=lxn93EEF0AwgXxUZ4zsCQ4S81DH+VSTqLnQpku2HhX7dnAOfRsrO36tVkAGlt0KNABTB9kbfSY2h7ypCqPoDwJxNROA3EkmHnz1sLByme6Hcwihff8ciL8xuZKg/RCVwc7UAPFR5MnrChZ+InGUSWviBLqFsTUQzjBT8wZCQnM8=; Received: from p4ffe579c.dip0.t-ipconnect.de ([79.254.87.156] helo=pandem0nium) by nick.hrz.tu-chemnitz.de with esmtpsa (TLSv1:DHE-RSA-AES128-SHA:128) (Exim 4.80.1) (envelope-from ) id 1UxHYb-0005BE-1d; Thu, 11 Jul 2013 16:09:17 +0200 Received: from dotslash by pandem0nium with local (Exim 4.80) (envelope-from ) id 1UxHYZ-0001L0-Sf; Thu, 11 Jul 2013 16:09:15 +0200 From: Simon Wunderlich To: Johannes Berg Cc: linux-wireless@vger.kernel.org, Mathias Kretschmer , Simon Wunderlich Subject: [PATCHv5 2/4] mac80211: add functions to duplicate a cfg80211_beacon Date: Thu, 11 Jul 2013 16:09:06 +0200 Message-Id: <1373551749-5107-3-git-send-email-siwu@hrz.tu-chemnitz.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1373551749-5107-1-git-send-email-siwu@hrz.tu-chemnitz.de> References: <1373551749-5107-1-git-send-email-siwu@hrz.tu-chemnitz.de> X-purgate: clean X-purgate-type: clean X-purgate-ID: 154106::1373551757-000004FE-F2CC806E/0-0/0-0 X-Scan-AV: nick.hrz.tu-chemnitz.de; 2013-07-11 16:09:17; f729696d4a0b950a926f2e9a77935eb9 X-Scan-SA: nick.hrz.tu-chemnitz.de; 2013-07-11 16:09:17; c645622c1eb57867bc270f8b5ff39787 X-Spam-Score: -1.0 (-) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For the channel switch announcement, it is required to set a new beacon after the driver arrived on the new channel. The new beacon will be set by nl80211, but is required to duplicate the beacon as the original memory within the netlink message will be gone. Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer --- Changes to PATCHv2: * allocate only one memory chunk --- net/mac80211/cfg.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index b82fff6..8e6c935 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2775,6 +2775,62 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy, return 0; } +static struct cfg80211_beacon_data * +cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) +{ + struct cfg80211_beacon_data *new_beacon; + u8 *pos; + int len; + + len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + + beacon->proberesp_ies_len + beacon->assocresp_ies_len + + beacon->probe_resp_len; + + new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); + if (!new_beacon) + return NULL; + + pos = (u8 *)(new_beacon + 1); + if (beacon->head_len) { + new_beacon->head_len = beacon->head_len; + new_beacon->head = pos; + memcpy(pos, beacon->head, beacon->head_len); + pos += beacon->head_len; + } + if (beacon->tail_len) { + new_beacon->tail_len = beacon->tail_len; + new_beacon->tail = pos; + memcpy(pos, beacon->tail, beacon->tail_len); + pos += beacon->tail_len; + } + if (beacon->beacon_ies_len) { + new_beacon->beacon_ies_len = beacon->beacon_ies_len; + new_beacon->beacon_ies = pos; + memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); + pos += beacon->beacon_ies_len; + } + if (beacon->proberesp_ies_len) { + new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; + new_beacon->proberesp_ies = pos; + memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); + pos += beacon->proberesp_ies_len; + } + if (beacon->assocresp_ies_len) { + new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; + new_beacon->assocresp_ies = pos; + memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); + pos += beacon->assocresp_ies_len; + } + if (beacon->probe_resp_len) { + new_beacon->probe_resp_len = beacon->probe_resp_len; + beacon->probe_resp = pos; + memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); + pos += beacon->probe_resp_len; + } + + return new_beacon; +} + static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, struct ieee80211_channel *chan, bool offchan, unsigned int wait, const u8 *buf, size_t len,