From patchwork Sun Jun 18 18:49:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 693968 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 01557EB64D8 for ; Sun, 18 Jun 2023 18:50:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229655AbjFRSup (ORCPT ); Sun, 18 Jun 2023 14:50:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229630AbjFRSuo (ORCPT ); Sun, 18 Jun 2023 14:50:44 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA5F8E5C for ; Sun, 18 Jun 2023 11:50:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687114235; x=1718650235; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=rPUUjuNmGFYMUaZAOCPOdgedt1YPZR92tDkSggIHN7E=; b=mIeg/fcQbx70tYJriTiEU0zfywbRmLUloAES3WU/l5iKV5os6RcwT4up 3qHsR2R61IS3p2e9fZNn8XKvHU/whDYt8RhO4XczzOXRuZracZZkLkV3Y xxxFZwS5RqG6mluN9eVXR7MrG+VXpMNFxpJBhA+cBePHwWNDWW8lYuiNV uB+mYwCx5m/ZKXOBtNrK8/dkue9eGv4W1SDIk6d1SDg63wtRzLjEP5+Fz vvGhZISJGSef2Y0CMuIfRn+GxrguMJl1XOLyf6FCT4MgcOZAmznNA5ATJ hDiLEXXjBFcx01dthiQebIQofiJ92WtwKmgVLYlw7SU4rVyDDkaLksqBP Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10745"; a="339116644" X-IronPort-AV: E=Sophos;i="6.00,253,1681196400"; d="scan'208";a="339116644" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2023 11:50:35 -0700 X-IronPort-AV: E=McAfee;i="6600,9927,10745"; a="747233922" X-IronPort-AV: E=Sophos;i="6.00,253,1681196400"; d="scan'208";a="747233922" Received: from aflumen-mobl2.ger.corp.intel.com (HELO ggreenma-mobl2.intel.com) ([10.251.178.161]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jun 2023 11:50:33 -0700 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Benjamin Berg , Gregory Greenman Subject: [PATCH 08/20] wifi: cfg80211: use a struct for inform_single_bss data Date: Sun, 18 Jun 2023 21:49:50 +0300 Message-Id: <20230618214436.831ab8a87b6f.I3bcc83d90f41d6f8a47b39528575dad0a9ec3564@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230618185002.817236-1-gregory.greenman@intel.com> References: <20230618185002.817236-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Benjamin Berg The argument is getting quite large, so use a struct internally to pass around the information. Signed-off-by: Benjamin Berg Signed-off-by: Gregory Greenman --- net/wireless/scan.c | 209 ++++++++++++++++++++++++-------------------- 1 file changed, 112 insertions(+), 97 deletions(-) diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 095dc9db8750..974a6a8240dd 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1644,12 +1644,6 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *rdev, return true; } -struct cfg80211_non_tx_bss { - struct cfg80211_bss *tx_bss; - u8 max_bssid_indicator; - u8 bssid_index; -}; - static void cfg80211_update_hidden_bsses(struct cfg80211_internal_bss *known, const struct cfg80211_bss_ies *new_ies, const struct cfg80211_bss_ies *old_ies) @@ -1977,17 +1971,30 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen, return alt_channel; } +struct cfg80211_inform_single_bss_data { + struct cfg80211_inform_bss *drv_data; + enum cfg80211_bss_frame_type ftype; + u8 bssid[ETH_ALEN]; + u64 tsf; + u16 capability; + u16 beacon_interval; + const u8 *ie; + size_t ielen; + + /* Set for nontransmitted BSSIDs */ + struct cfg80211_bss *source_bss; + u8 max_bssid_indicator; + u8 bssid_index; +}; + /* Returned bss is reference counted and must be cleaned up appropriately. */ static struct cfg80211_bss * cfg80211_inform_single_bss_data(struct wiphy *wiphy, - struct cfg80211_inform_bss *data, - enum cfg80211_bss_frame_type ftype, - const u8 *bssid, u64 tsf, u16 capability, - u16 beacon_interval, const u8 *ie, size_t ielen, - struct cfg80211_non_tx_bss *non_tx_data, + struct cfg80211_inform_single_bss_data *data, gfp_t gfp) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); + struct cfg80211_inform_bss *drv_data = data->drv_data; struct cfg80211_bss_ies *ies; struct ieee80211_channel *channel; struct cfg80211_internal_bss tmp = {}, *res; @@ -1999,40 +2006,41 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, return NULL; if (WARN_ON(wiphy->signal_type == CFG80211_SIGNAL_TYPE_UNSPEC && - (data->signal < 0 || data->signal > 100))) + (drv_data->signal < 0 || drv_data->signal > 100))) return NULL; - channel = cfg80211_get_bss_channel(wiphy, ie, ielen, data->chan, - data->scan_width); + channel = cfg80211_get_bss_channel(wiphy, data->ie, data->ielen, + drv_data->chan, drv_data->scan_width); if (!channel) return NULL; - memcpy(tmp.pub.bssid, bssid, ETH_ALEN); + memcpy(tmp.pub.bssid, data->bssid, ETH_ALEN); tmp.pub.channel = channel; - tmp.pub.scan_width = data->scan_width; - tmp.pub.signal = data->signal; - tmp.pub.beacon_interval = beacon_interval; - tmp.pub.capability = capability; - tmp.ts_boottime = data->boottime_ns; - tmp.parent_tsf = data->parent_tsf; - ether_addr_copy(tmp.parent_bssid, data->parent_bssid); - - if (non_tx_data) { - tmp.pub.transmitted_bss = non_tx_data->tx_bss; - ts = bss_from_pub(non_tx_data->tx_bss)->ts; - tmp.pub.bssid_index = non_tx_data->bssid_index; - tmp.pub.max_bssid_indicator = non_tx_data->max_bssid_indicator; + tmp.pub.scan_width = drv_data->scan_width; + tmp.pub.signal = drv_data->signal; + tmp.pub.beacon_interval = data->beacon_interval; + tmp.pub.capability = data->capability; + tmp.ts_boottime = drv_data->boottime_ns; + tmp.parent_tsf = drv_data->parent_tsf; + ether_addr_copy(tmp.parent_bssid, drv_data->parent_bssid); + + if (data->source_bss) { + tmp.pub.transmitted_bss = data->source_bss; + ts = bss_from_pub(data->source_bss)->ts; + tmp.pub.bssid_index = data->bssid_index; + tmp.pub.max_bssid_indicator = data->max_bssid_indicator; } else { ts = jiffies; if (channel->band == NL80211_BAND_60GHZ) { - bss_type = capability & WLAN_CAPABILITY_DMG_TYPE_MASK; + bss_type = data->capability & + WLAN_CAPABILITY_DMG_TYPE_MASK; if (bss_type == WLAN_CAPABILITY_DMG_TYPE_AP || bss_type == WLAN_CAPABILITY_DMG_TYPE_PBSS) regulatory_hint_found_beacon(wiphy, channel, gfp); } else { - if (capability & WLAN_CAPABILITY_ESS) + if (data->capability & WLAN_CAPABILITY_ESS) regulatory_hint_found_beacon(wiphy, channel, gfp); } @@ -2046,15 +2054,15 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, * override the IEs pointer should we have received an earlier * indication of Probe Response data. */ - ies = kzalloc(sizeof(*ies) + ielen, gfp); + ies = kzalloc(sizeof(*ies) + data->ielen, gfp); if (!ies) return NULL; - ies->len = ielen; - ies->tsf = tsf; + ies->len = data->ielen; + ies->tsf = data->tsf; ies->from_beacon = false; - memcpy(ies->data, ie, ielen); + memcpy(ies->data, data->ie, data->ielen); - switch (ftype) { + switch (data->ftype) { case CFG80211_BSS_FTYPE_BEACON: ies->from_beacon = true; fallthrough; @@ -2067,7 +2075,7 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, } rcu_assign_pointer(tmp.pub.ies, ies); - signal_valid = data->chan == channel; + signal_valid = drv_data->chan == channel; spin_lock_bh(&rdev->bss_lock); res = __cfg80211_bss_update(rdev, &tmp, signal_valid, ts); if (!res) @@ -2075,12 +2083,11 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, rdev_inform_bss(rdev, &res->pub, ies, data->drv_data); - if (non_tx_data) { + if (data->source_bss) { /* this is a nontransmitting bss, we need to add it to * transmitting bss' list if it is not there */ - if (cfg80211_add_nontrans_list(non_tx_data->tx_bss, - &res->pub)) { + if (cfg80211_add_nontrans_list(data->source_bss, &res->pub)) { if (__cfg80211_unlink_bss(rdev, res)) { rdev->bss_generation++; res = NULL; @@ -2173,43 +2180,47 @@ size_t cfg80211_merge_profile(const u8 *ie, size_t ielen, } EXPORT_SYMBOL(cfg80211_merge_profile); -static void cfg80211_parse_mbssid_data(struct wiphy *wiphy, - struct cfg80211_inform_bss *data, - enum cfg80211_bss_frame_type ftype, - const u8 *bssid, u64 tsf, - u16 beacon_interval, const u8 *ie, - size_t ielen, - struct cfg80211_non_tx_bss *non_tx_data, - gfp_t gfp) -{ +static void +cfg80211_parse_mbssid_data(struct wiphy *wiphy, + struct cfg80211_inform_single_bss_data *tx_data, + struct cfg80211_bss *source_bss, + gfp_t gfp) +{ + struct cfg80211_inform_single_bss_data data = { + .drv_data = tx_data->drv_data, + .ftype = tx_data->ftype, + .tsf = tx_data->tsf, + .beacon_interval = tx_data->beacon_interval, + .source_bss = source_bss, + }; const u8 *mbssid_index_ie; const struct element *elem, *sub; - size_t new_ie_len; - u8 new_bssid[ETH_ALEN]; u8 *new_ie, *profile; u64 seen_indices = 0; - u16 capability; struct cfg80211_bss *bss; - if (!non_tx_data) + if (!source_bss) return; - if (!cfg80211_find_elem(WLAN_EID_MULTIPLE_BSSID, ie, ielen)) + if (!cfg80211_find_elem(WLAN_EID_MULTIPLE_BSSID, + tx_data->ie, tx_data->ielen)) return; if (!wiphy->support_mbssid) return; if (wiphy->support_only_he_mbssid && - !cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ie, ielen)) + !cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, + tx_data->ie, tx_data->ielen)) return; new_ie = kmalloc(IEEE80211_MAX_DATA_LEN, gfp); if (!new_ie) return; - profile = kmalloc(ielen, gfp); + profile = kmalloc(tx_data->ielen, gfp); if (!profile) goto out; - for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, ie, ielen) { + for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, + tx_data->ie, tx_data->ielen) { if (elem->datalen < 4) continue; if (elem->data[0] < 1 || (int)elem->data[0] > 8) @@ -2231,12 +2242,13 @@ static void cfg80211_parse_mbssid_data(struct wiphy *wiphy, continue; } - memset(profile, 0, ielen); - profile_len = cfg80211_merge_profile(ie, ielen, + memset(profile, 0, tx_data->ielen); + profile_len = cfg80211_merge_profile(tx_data->ie, + tx_data->ielen, elem, sub, profile, - ielen); + tx_data->ielen); /* found a Nontransmitted BSSID Profile */ mbssid_index_ie = cfg80211_find_ie @@ -2256,31 +2268,27 @@ static void cfg80211_parse_mbssid_data(struct wiphy *wiphy, seen_indices |= BIT_ULL(mbssid_index_ie[2]); - non_tx_data->bssid_index = mbssid_index_ie[2]; - non_tx_data->max_bssid_indicator = elem->data[0]; + data.bssid_index = mbssid_index_ie[2]; + data.max_bssid_indicator = elem->data[0]; + + cfg80211_gen_new_bssid(tx_data->bssid, + data.max_bssid_indicator, + data.bssid_index, + data.bssid); - cfg80211_gen_new_bssid(bssid, - non_tx_data->max_bssid_indicator, - non_tx_data->bssid_index, - new_bssid); memset(new_ie, 0, IEEE80211_MAX_DATA_LEN); - new_ie_len = cfg80211_gen_new_ie(ie, ielen, + data.ie = new_ie; + data.ielen = cfg80211_gen_new_ie(tx_data->ie, + tx_data->ielen, profile, - profile_len, new_ie, + profile_len, + new_ie, IEEE80211_MAX_DATA_LEN); - if (!new_ie_len) + if (!data.ielen) continue; - capability = get_unaligned_le16(profile + 2); - bss = cfg80211_inform_single_bss_data(wiphy, data, - ftype, - new_bssid, tsf, - capability, - beacon_interval, - new_ie, - new_ie_len, - non_tx_data, - gfp); + data.capability = get_unaligned_le16(profile + 2); + bss = cfg80211_inform_single_bss_data(wiphy, &data, gfp); if (!bss) break; cfg80211_put_bss(wiphy, bss); @@ -2360,18 +2368,24 @@ cfg80211_inform_bss_data(struct wiphy *wiphy, u16 beacon_interval, const u8 *ie, size_t ielen, gfp_t gfp) { + struct cfg80211_inform_single_bss_data inform_data = { + .drv_data = data, + .ftype = ftype, + .tsf = tsf, + .capability = capability, + .beacon_interval = beacon_interval, + .ie = ie, + .ielen = ielen, + }; struct cfg80211_bss *res; - struct cfg80211_non_tx_bss non_tx_data; - res = cfg80211_inform_single_bss_data(wiphy, data, ftype, bssid, tsf, - capability, beacon_interval, ie, - ielen, NULL, gfp); + memcpy(inform_data.bssid, bssid, ETH_ALEN); + + res = cfg80211_inform_single_bss_data(wiphy, &inform_data, gfp); if (!res) return NULL; - non_tx_data.tx_bss = res; - cfg80211_parse_mbssid_data(wiphy, data, ftype, bssid, tsf, - beacon_interval, ie, ielen, &non_tx_data, - gfp); + + cfg80211_parse_mbssid_data(wiphy, &inform_data, res, gfp); return res; } EXPORT_SYMBOL(cfg80211_inform_bss_data); @@ -2517,12 +2531,13 @@ cfg80211_inform_bss_frame_data(struct wiphy *wiphy, struct ieee80211_mgmt *mgmt, size_t len, gfp_t gfp) { + struct cfg80211_inform_single_bss_data inform_data = { + .drv_data = data, + .ie = mgmt->u.probe_resp.variable, + .ielen = len - offsetof(struct ieee80211_mgmt, + u.probe_resp.variable), + }; struct cfg80211_bss *res; - const u8 *ie = mgmt->u.probe_resp.variable; - size_t ielen = len - offsetof(struct ieee80211_mgmt, - u.probe_resp.variable); - enum cfg80211_bss_frame_type ftype; - struct cfg80211_non_tx_bss non_tx_data = {}; res = cfg80211_inform_single_bss_frame_data(wiphy, data, mgmt, len, gfp); @@ -2533,15 +2548,15 @@ cfg80211_inform_bss_frame_data(struct wiphy *wiphy, if (ieee80211_is_s1g_beacon(mgmt->frame_control)) return res; - ftype = ieee80211_is_beacon(mgmt->frame_control) ? + inform_data.ftype = ieee80211_is_beacon(mgmt->frame_control) ? CFG80211_BSS_FTYPE_BEACON : CFG80211_BSS_FTYPE_PRESP; - non_tx_data.tx_bss = res; + memcpy(inform_data.bssid, mgmt->bssid, ETH_ALEN); + inform_data.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); + inform_data.beacon_interval = + le16_to_cpu(mgmt->u.probe_resp.beacon_int); /* process each non-transmitting bss */ - cfg80211_parse_mbssid_data(wiphy, data, ftype, mgmt->bssid, - le64_to_cpu(mgmt->u.probe_resp.timestamp), - le16_to_cpu(mgmt->u.probe_resp.beacon_int), - ie, ielen, &non_tx_data, gfp); + cfg80211_parse_mbssid_data(wiphy, &inform_data, res, gfp); return res; }