From: Ilan Peer Date: Fri, 18 Jun 2021 10:41:41 +0000 (+0300) Subject: cfg80211: Support hidden AP discovery over 6GHz band X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=52bb205213a8169cc40e1eba96483a9e488c17d3;p=linux.git cfg80211: Support hidden AP discovery over 6GHz band To discover a hidden AP on the 6GHz band, the probe request sent to the AP needs to include the AP's SSID, as some APs would not respond with a probe response based only on short SSID match. To support hidden AP discovery over the 6GHz band, when constructing the specific 6GHz band scan also include SSIDs that were part of the original scan request, so these can be used in the probe requests transmitted during scan. Signed-off-by: Ilan Peer Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20210618133832.218df9d3203c.Ice0f7a2f6a65f1f9710b7898591481baeefaf490@changeid Signed-off-by: Johannes Berg --- diff --git a/net/wireless/scan.c b/net/wireless/scan.c index a3941b19b516d..f03c7ac8e184d 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -5,7 +5,7 @@ * Copyright 2008 Johannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright 2016 Intel Deutschland GmbH - * Copyright (C) 2018-2020 Intel Corporation + * Copyright (C) 2018-2021 Intel Corporation */ #include #include @@ -757,7 +757,8 @@ static int cfg80211_scan_6ghz(struct cfg80211_registered_device *rdev) } request = kzalloc(struct_size(request, channels, n_channels) + - sizeof(*request->scan_6ghz_params) * count, + sizeof(*request->scan_6ghz_params) * count + + sizeof(*request->ssids) * rdev_req->n_ssids, GFP_KERNEL); if (!request) { cfg80211_free_coloc_ap_list(&coloc_ap_list); @@ -848,9 +849,18 @@ skip: if (request->n_channels) { struct cfg80211_scan_request *old = rdev->int_scan_req; - rdev->int_scan_req = request; + /* + * Add the ssids from the parent scan request to the new scan + * request, so the driver would be able to use them in its + * probe requests to discover hidden APs on PSC channels. + */ + request->ssids = (void *)&request->channels[request->n_channels]; + request->n_ssids = rdev_req->n_ssids; + memcpy(request->ssids, rdev_req->ssids, sizeof(*request->ssids) * + request->n_ssids); + /* * If this scan follows a previous scan, save the scan start * info from the first part of the scan