From patchwork Wed Feb 28 08:55:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 13575063 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BFD2A2D61B for ; Wed, 28 Feb 2024 08:57:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.38.16 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709110646; cv=none; b=J9HZLDjs6gVJd7KOuctf2BnKW4oPMcr6+Te2DJ7G7gn93cMFMTgAzqi2EwHWbal3f+yyEa9aoZQr5bxny4XCSqRKK7flab0AxEPyb5jLmXp8VaHpyads+NCJiEgAfU0+W9GcO0g1pK0RYaGcBlpdHJ1ff67Vrfo7+FgHMzbNcHM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709110646; c=relaxed/simple; bh=unoY2XgpOx2haF1FpOwYK6BEYX9KfplgFeWzcJ8Ji9s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HivW1uNZYe4QCeqBgDvFnc8bAs0hEb4AwHbjA0xs/Z5n4MwjwTuBL0GmHAgdqt8LcTqUDUmQJojrAtZAURe/4Bd862lAZb6sChWZVBwruzmnw+WQZvjitUTdCpa3jeFdc/b8n8ZH1TsMrQIgQ+/zzuHgEQdTYA16j3DMHvnPntc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net; spf=pass smtp.mailfrom=sipsolutions.net; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b=lBmcRLfd; arc=none smtp.client-ip=168.119.38.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="lBmcRLfd" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Content-Type:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=xvQFWgR58WdetjbmpxFYW/BL/w6Ue2IZ1kqCG/z9/ZM=; t=1709110644; x=1710320244; b=lBmcRLfd4VaHYjfZ/xIw5uNx06sIro2u5B9ppufdZEvd+mV G538fJTR9OWZKTQEVcMd/1bDPErJNe+hIdJwbu6wtog0PYwkG/uLGlUdg9EBJIAEclUmq3N/DmoPj VU3BnlldjXKdLxwqIOZ9YpgvP8BUXWFlDqA387Sbck0+6JZdtJlTmOlJR+kESNF8AM2AIGGGvaurA E0yPX1moHda1UxOsNO45RVwhNF3Du4IHdnmjLPq7iEap9hGOptlZ86V6ZocUKJXONIz+lFy46ajCS 1M4+Bly4L/LBM/Xig54pQY5hdjmPk38U7JkQWpIk6pCKuiUrlhM8Wj7P05w8yUWQ==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.97) (envelope-from ) id 1rfFkf-0000000C0hJ-3svJ; Wed, 28 Feb 2024 09:57:22 +0100 From: Johannes Berg To: linux-wireless@vger.kernel.org Cc: Johannes Berg , Miriam Rachel Korenblit Subject: [PATCH 1/8] wifi: cfg80211: expose cfg80211_iter_rnr() to drivers Date: Wed, 28 Feb 2024 09:55:41 +0100 Message-ID: <20240228095718.0954809964ef.I53e95c017aa71f14e8d1057afbbc75982ddb43df@changeid> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240228085718.21171-10-johannes@sipsolutions.net> References: <20240228085718.21171-10-johannes@sipsolutions.net> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Johannes Berg In mac80211 we'll need to look at reduced neighbor report entries for channel switch purposes, so export the iteration function to make that simpler. Reviewed-by: Miriam Rachel Korenblit Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 32 ++++++++++++++++++++++++++++++++ net/wireless/scan.c | 20 +++++++------------- 2 files changed, 39 insertions(+), 13 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f9eada2a26ec..53653d234d39 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -6870,6 +6870,38 @@ cfg80211_find_vendor_ie(unsigned int oui, int oui_type, return (const void *)cfg80211_find_vendor_elem(oui, oui_type, ies, len); } +/** + * enum cfg80211_rnr_iter_ret - reduced neighbor report iteration state + * @RNR_ITER_CONTINUE: continue iterating with the next entry + * @RNR_ITER_BREAK: break iteration and return success + * @RNR_ITER_ERROR: break iteration and return error + */ +enum cfg80211_rnr_iter_ret { + RNR_ITER_CONTINUE, + RNR_ITER_BREAK, + RNR_ITER_ERROR, +}; + +/** + * cfg80211_iter_rnr - iterate reduced neighbor report entries + * @elems: the frame elements to iterate RNR elements and then + * their entries in + * @elems_len: length of the elements + * @iter: iteration function, see also &enum cfg80211_rnr_iter_ret + * for the return value + * @iter_data: additional data passed to the iteration function + * Return: %true on success (after successfully iterating all entries + * or if the iteration function returned %RNR_ITER_BREAK), + * %false on error (iteration function returned %RNR_ITER_ERROR + * or elements were malformed.) + */ +bool cfg80211_iter_rnr(const u8 *elems, size_t elems_len, + enum cfg80211_rnr_iter_ret + (*iter)(void *data, u8 type, + const struct ieee80211_neighbor_ap_info *info, + const u8 *tbtt_info, u8 tbtt_info_len), + void *iter_data); + /** * cfg80211_defragment_element - Defrag the given element data into a buffer * diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 7cf36b8d3ae7..9377a43aa5f7 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -611,19 +611,12 @@ static int cfg80211_parse_ap_info(struct cfg80211_colocated_ap *entry, return 0; } -enum cfg80211_rnr_iter_ret { - RNR_ITER_CONTINUE, - RNR_ITER_BREAK, - RNR_ITER_ERROR, -}; - -static bool -cfg80211_iter_rnr(const u8 *elems, size_t elems_len, - enum cfg80211_rnr_iter_ret - (*iter)(void *data, u8 type, - const struct ieee80211_neighbor_ap_info *info, - const u8 *tbtt_info, u8 tbtt_info_len), - void *iter_data) +bool cfg80211_iter_rnr(const u8 *elems, size_t elems_len, + enum cfg80211_rnr_iter_ret + (*iter)(void *data, u8 type, + const struct ieee80211_neighbor_ap_info *info, + const u8 *tbtt_info, u8 tbtt_info_len), + void *iter_data) { const struct element *rnr; const u8 *pos, *end; @@ -675,6 +668,7 @@ cfg80211_iter_rnr(const u8 *elems, size_t elems_len, return true; } +EXPORT_SYMBOL_GPL(cfg80211_iter_rnr); struct colocated_ap_data { const struct element *ssid_elem;