From patchwork Tue Oct 19 16:23:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: You-Sheng Yang X-Patchwork-Id: 1543484 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4HYfH82ZRSz9sRR for ; Wed, 20 Oct 2021 03:25:24 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1mcrvO-0005gl-R2; Tue, 19 Oct 2021 16:25:14 +0000 Received: from mail-pj1-f53.google.com ([209.85.216.53]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1mcrv4-0005HI-WC for kernel-team@lists.ubuntu.com; Tue, 19 Oct 2021 16:24:55 +0000 Received: by mail-pj1-f53.google.com with SMTP id pf6-20020a17090b1d8600b0019fa884ab85so247283pjb.5 for ; Tue, 19 Oct 2021 09:24:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Uz/CH/D4yoViY4kAgiENDWo1UNxQhN4FynC3lhZcKPk=; b=eqM2M9l/tmzorSJYoX6MZZ/GQ5Axkd1zqZkWyWP+Yk1U89mLaqqW/FUItekCf1Ubdd mgU7W5YIHUZa6ob4sM5zgY9vFRrgJH2ESyYBvKVGi5U6ImafKDMdx0KgZ1S4av4TzL8j dXC8qBhoE4l1gXHv7SWzd8G76e5bTZRHa+Y0QAZu3bYB4hYmbNT1rpYXD8XAVwPieGG/ 6VHFkbKZxGrC8ei8n7RwzXphntXSHKv2MDNnETgIwg51dIn4DfHQtnBBe6r0t1prOFo6 g93SgTbnLdvtg7O1yBDUTrz/hiuFbmsONQkNeRh9xWYIudz8PSRScCI8rJYW8fnaNJCP /AHA== X-Gm-Message-State: AOAM533G1dbVBMNC0kTtHqcxUlkpMy4BYFTasQFvUF4oMn2ayC0pzFHS 2FiUKFjPAa5wapitoYpTm6CFkvDw0eE= X-Google-Smtp-Source: ABdhPJx5B2Ne/F3msWy83qgZJcA6Da1UXiJA3VwPw8ne5RLl/e0ocb/okM5mVyKdtASHY7183OKq9Q== X-Received: by 2002:a17:90b:4d84:: with SMTP id oj4mr892340pjb.58.1634660678854; Tue, 19 Oct 2021 09:24:38 -0700 (PDT) Received: from localhost (220-142-196-159.dynamic-ip.hinet.net. [220.142.196.159]) by smtp.gmail.com with ESMTPSA id o127sm16866196pfb.216.2021.10.19.09.24.38 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Oct 2021 09:24:38 -0700 (PDT) From: You-Sheng Yang To: kernel-team@lists.ubuntu.com Subject: [PATCH 16/25][SRU][OEM-5.14] mac80211: mlme: find auth challenge directly Date: Wed, 20 Oct 2021 00:23:59 +0800 Message-Id: <20211019162408.1407525-17-vicamo.yang@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211019162408.1407525-1-vicamo.yang@canonical.com> References: <20211019162408.1407525-1-vicamo.yang@canonical.com> MIME-Version: 1.0 Received-SPF: pass client-ip=209.85.216.53; envelope-from=vicamo@gmail.com; helo=mail-pj1-f53.google.com X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Johannes Berg BugLink: https://bugs.launchpad.net/bugs/1939528 There's no need to parse all elements etc. just to find the authentication challenge - use cfg80211_find_elem() instead. This also allows us to remove WLAN_EID_CHALLENGE handling from the element parsing entirely. Link: https://lore.kernel.org/r/20210920154009.45f9b3a15722.Ice3159ffad03a007d6154cbf1fb3a8c48489e86f@changeid Signed-off-by: Johannes Berg (cherry picked from commit 49a765d6785e99157ff5091cc37485732496864e) Signed-off-by: You-Sheng Yang --- net/mac80211/ieee80211_i.h | 2 -- net/mac80211/mlme.c | 11 ++++++----- net/mac80211/util.c | 4 ---- 3 files changed, 6 insertions(+), 11 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 399b9e90274f0..328ef50d52414 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1507,7 +1507,6 @@ struct ieee802_11_elems { const u8 *supp_rates; const u8 *ds_params; const struct ieee80211_tim_ie *tim; - const u8 *challenge; const u8 *rsn; const u8 *rsnx; const u8 *erp_info; @@ -1561,7 +1560,6 @@ struct ieee802_11_elems { u8 ssid_len; u8 supp_rates_len; u8 tim_len; - u8 challenge_len; u8 rsn_len; u8 rsnx_len; u8 ext_supp_rates_len; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 39b3ed89e0dab..e18bd07f6822a 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2870,17 +2870,17 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; + const struct element *challenge; u8 *pos; - struct ieee802_11_elems elems; u32 tx_flags = 0; struct ieee80211_prep_tx_info info = { .subtype = IEEE80211_STYPE_AUTH, }; pos = mgmt->u.auth.variable; - ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems, - mgmt->bssid, auth_data->bss->bssid); - if (!elems.challenge) + challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos, + len - (pos - (u8 *)mgmt)); + if (!challenge) return; auth_data->expected_transaction = 4; drv_mgd_prepare_tx(sdata->local, sdata, &info); @@ -2888,7 +2888,8 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | IEEE80211_TX_INTFL_MLME_CONN_TX; ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, - elems.challenge - 2, elems.challenge_len + 2, + (void *)challenge, + challenge->datalen + sizeof(*challenge), auth_data->bss->bssid, auth_data->bss->bssid, auth_data->key, auth_data->key_len, auth_data->key_idx, tx_flags); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 43ccad8b24c78..dce8412282973 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1112,10 +1112,6 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, } else elem_parse_failed = true; break; - case WLAN_EID_CHALLENGE: - elems->challenge = pos; - elems->challenge_len = elen; - break; case WLAN_EID_VENDOR_SPECIFIC: if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && pos[2] == 0xf2) {