From patchwork Sun Aug 27 11:05:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 13366933 X-Patchwork-Delegate: johannes@sipsolutions.net 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 63A9EC83F14 for ; Sun, 27 Aug 2023 11:06:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229682AbjH0LGA (ORCPT ); Sun, 27 Aug 2023 07:06:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229787AbjH0LF5 (ORCPT ); Sun, 27 Aug 2023 07:05:57 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 32EC5186 for ; Sun, 27 Aug 2023 04:05:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1693134355; x=1724670355; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vU5b38Ck1WimHSHzTYUARZfN97FpOsGIAEVzfJxjuBs=; b=FQgBn9J7v8e4lPb4la/UG69WsAX+rPBOTQjLOw12hDHZvK5ak+rCvMHC w4u4rIGYcJo/DWHgyrxREflzvneVlS0nzlaQ6YHty4zLKZXYGhyaJI+TQ Lbg9A7WxsAfZ9NKCdWws1izxZ9zTgBq6o9SmVO4756tO92uwk4MNea+15 02R03ecWMsxH7lBnEfTih2gLilLEu+qAbBfo8hDJheB/1mVDI9C2EwK4n BKtWFVPlihlujBLB3cUwJbEGFwtDgwWsEF6xb+qa9CN7G534LrNtBrosn 623ZhF3yj+JVO25gOu5ispfE3PPv1rxgiPuGF7TJubqHQHTOaFlpHq1PX Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10814"; a="461301543" X-IronPort-AV: E=Sophos;i="6.02,205,1688454000"; d="scan'208";a="461301543" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2023 04:05:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="881632966" Received: from ishamsi-mobl1.ger.corp.intel.com (HELO ggreenma-mobl2.intel.com) ([10.251.186.7]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2023 04:05:58 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg , Gregory Greenman Subject: [PATCH 04/15] wifi: mac80211: add an element parsing unit test Date: Sun, 27 Aug 2023 14:05:21 +0300 Message-Id: <20230827135854.333bc75df13f.I0ddfeb6a88a4d89e7c7850e8ef45a4b19b5a061a@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230827110532.348304-1-gregory.greenman@intel.com> References: <20230827110532.348304-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Add a unit test for the parsing of a fragmented sta profile sub-element inside a fragmented multi-link element. Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman --- net/mac80211/Kconfig | 11 ++++ net/mac80211/Makefile | 2 + net/mac80211/tests/Makefile | 3 ++ net/mac80211/tests/elems.c | 101 ++++++++++++++++++++++++++++++++++++ net/mac80211/tests/module.c | 10 ++++ net/mac80211/util.c | 3 ++ 6 files changed, 130 insertions(+) create mode 100644 net/mac80211/tests/Makefile create mode 100644 net/mac80211/tests/elems.c create mode 100644 net/mac80211/tests/module.c diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig index 51ec8256b7fa..037ab74f5ade 100644 --- a/net/mac80211/Kconfig +++ b/net/mac80211/Kconfig @@ -57,6 +57,17 @@ endif comment "Some wireless drivers require a rate control algorithm" depends on MAC80211 && MAC80211_HAS_RC=n +config MAC80211_KUNIT_TEST + tristate "KUnit tests for mac80211" if !KUNIT_ALL_TESTS + depends on KUNIT + depends on MAC80211 + default KUNIT_ALL_TESTS + depends on !KERNEL_6_2 + help + Enable this option to test mac80211 internals with kunit. + + If unsure, say N. + config MAC80211_MESH bool "Enable mac80211 mesh networking support" depends on MAC80211 diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile index b8de44da1fb8..c9eb52768133 100644 --- a/net/mac80211/Makefile +++ b/net/mac80211/Makefile @@ -65,4 +65,6 @@ rc80211_minstrel-$(CONFIG_MAC80211_DEBUGFS) += \ mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y) +obj-y += tests/ + ccflags-y += -DDEBUG diff --git a/net/mac80211/tests/Makefile b/net/mac80211/tests/Makefile new file mode 100644 index 000000000000..4814584f8a14 --- /dev/null +++ b/net/mac80211/tests/Makefile @@ -0,0 +1,3 @@ +mac80211-tests-y += module.o elems.o + +obj-$(CONFIG_MAC80211_KUNIT_TEST) += mac80211-tests.o diff --git a/net/mac80211/tests/elems.c b/net/mac80211/tests/elems.c new file mode 100644 index 000000000000..997d0cd27b2d --- /dev/null +++ b/net/mac80211/tests/elems.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * KUnit tests for element parsing + * + * Copyright (C) 2023 Intel Corporation + */ +#include +#include "../ieee80211_i.h" + +MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING); + +static void mle_defrag(struct kunit *test) +{ + struct ieee80211_elems_parse_params parse_params = { + .link_id = 12, + .from_ap = true, + }; + struct ieee802_11_elems *parsed; + struct sk_buff *skb; + u8 *len_mle, *len_prof; + int i; + + skb = alloc_skb(1024, GFP_KERNEL); + KUNIT_ASSERT_NOT_NULL(test, skb); + + if (skb_pad(skb, skb_tailroom(skb))) { + KUNIT_FAIL(test, "failed to pad skb"); + return; + } + + /* build a multi-link element */ + skb_put_u8(skb, WLAN_EID_EXTENSION); + len_mle = skb_put(skb, 1); + skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK); + + put_unaligned_le16(IEEE80211_ML_CONTROL_TYPE_BASIC, + skb_put(skb, 2)); + /* struct ieee80211_mle_basic_common_info */ + skb_put_u8(skb, 7); /* includes len field */ + skb_put_data(skb, "\x00\x00\x00\x00\x00\x00", ETH_ALEN); /* MLD addr */ + + /* with a STA profile inside */ + skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE); + len_prof = skb_put(skb, 1); + put_unaligned_le16(IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE | + parse_params.link_id, + skb_put(skb, 2)); + skb_put_u8(skb, 1); /* fake sta_info_len - includes itself */ + /* put a bunch of useless elements into it */ + for (i = 0; i < 20; i++) { + skb_put_u8(skb, WLAN_EID_SSID); + skb_put_u8(skb, 20); + skb_put(skb, 20); + } + + /* fragment STA profile */ + ieee80211_fragment_element(skb, len_prof, + IEEE80211_MLE_SUBELEM_FRAGMENT); + /* fragment MLE */ + ieee80211_fragment_element(skb, len_mle, WLAN_EID_FRAGMENT); + + parse_params.start = skb->data; + parse_params.len = skb->len; + parsed = ieee802_11_parse_elems_full(&parse_params); + /* should return ERR_PTR or valid, not NULL */ + KUNIT_EXPECT_NOT_NULL(test, parsed); + + if (IS_ERR_OR_NULL(parsed)) + goto free_skb; + + KUNIT_EXPECT_NOT_NULL(test, parsed->ml_basic_elem); + KUNIT_EXPECT_EQ(test, + parsed->ml_basic_len, + 2 /* control */ + + 7 /* common info */ + + 2 /* sta profile element header */ + + 3 /* sta profile header */ + + 20 * 22 /* sta profile data */ + + 2 /* sta profile fragment element */); + KUNIT_EXPECT_NOT_NULL(test, parsed->prof); + KUNIT_EXPECT_EQ(test, + parsed->sta_prof_len, + 3 /* sta profile header */ + + 20 * 22 /* sta profile data */); + + kfree(parsed); +free_skb: + kfree_skb(skb); +} + +static struct kunit_case element_parsing_test_cases[] = { + KUNIT_CASE(mle_defrag), + {} +}; + +static struct kunit_suite element_parsing = { + .name = "mac80211-element-parsing", + .test_cases = element_parsing_test_cases, +}; + +kunit_test_suite(element_parsing); diff --git a/net/mac80211/tests/module.c b/net/mac80211/tests/module.c new file mode 100644 index 000000000000..9d05f2943935 --- /dev/null +++ b/net/mac80211/tests/module.c @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This is just module boilerplate for the mac80211 kunit module. + * + * Copyright (C) 2023 Intel Corporation + */ +#include + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("tests for mac80211"); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 8a6917cf63cf..d430093d14af 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "ieee80211_i.h" #include "driver-ops.h" @@ -1654,6 +1655,7 @@ ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params) return elems; } +EXPORT_SYMBOL_IF_KUNIT(ieee802_11_parse_elems_full); void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, struct ieee80211_tx_queue_params @@ -5146,3 +5148,4 @@ void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos, u8 frag_id) *len_pos = elem_len; } +EXPORT_SYMBOL_IF_KUNIT(ieee80211_fragment_element);