From patchwork Thu Jun 4 07:09:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Crispin X-Patchwork-Id: 11587009 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0B02D913 for ; Thu, 4 Jun 2020 07:10:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F07AC2074B for ; Thu, 4 Jun 2020 07:10:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727895AbgFDHKE (ORCPT ); Thu, 4 Jun 2020 03:10:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727878AbgFDHKC (ORCPT ); Thu, 4 Jun 2020 03:10:02 -0400 Received: from nbd.name (nbd.name [IPv6:2a01:4f8:221:3d45::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62B6FC08C5C1 for ; Thu, 4 Jun 2020 00:10:02 -0700 (PDT) Received: from [46.59.202.224] (helo=localhost.localdomain) by ds12 with esmtpa (Exim 4.89) (envelope-from ) id 1jgk0k-0001P3-Ep; Thu, 04 Jun 2020 09:09:58 +0200 From: John Crispin To: Johannes Berg Cc: linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, John Crispin Subject: [PATCH 01/12] nl80211: add basic multiple bssid support Date: Thu, 4 Jun 2020 09:09:41 +0200 Message-Id: <20200604070952.15481-2-john@phrozen.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200604070952.15481-1-john@phrozen.org> References: <20200604070952.15481-1-john@phrozen.org> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org This patch adds support for passing the multiple bssid config to the kernel when adding an interface. A bss can be legacy, transmitting or non-transmitting. A non-transmitting BSSID will have a parent interface, which needs to be transmitting. Signed-off-by: John Crispin --- include/net/cfg80211.h | 8 ++++++++ include/uapi/linux/nl80211.h | 25 +++++++++++++++++++++++++ net/wireless/nl80211.c | 14 ++++++++++++++ 3 files changed, 47 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index deaa3668d47a..f0fc65f900b4 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -601,6 +601,8 @@ struct vif_params { u8 macaddr[ETH_ALEN]; const u8 *vht_mumimo_groups; const u8 *vht_mumimo_follow_addr; + enum nl80211_multi_bssid_mode multi_bssid_mode; + u32 multi_bssid_parent; }; /** @@ -5060,6 +5062,9 @@ struct cfg80211_cqm_config; * @pmsr_list: (private) peer measurement requests * @pmsr_lock: (private) peer measurements requests/results lock * @pmsr_free_wk: (private) peer measurements cleanup work + * @multi_bssid_mode: Is this a legacy, transmitted or non-transmitted bssid + * @multi_bssid_parent: a non-transmitted bssid has a transmitted parent + * @multi_bssid_list: linked list for tracking parent - child relations. */ struct wireless_dev { struct wiphy *wiphy; @@ -5136,6 +5141,9 @@ struct wireless_dev { struct list_head pmsr_list; spinlock_t pmsr_lock; struct work_struct pmsr_free_wk; + enum nl80211_multi_bssid_mode multi_bssid_mode; + struct wireless_dev *multi_bssid_parent; + struct list_head multi_bssid_list; }; static inline u8 *wdev_address(struct wireless_dev *wdev) diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 966887bd654c..a586567f18ea 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -2470,6 +2470,12 @@ enum nl80211_commands { * no roaming occurs between the reauth threshold and PMK expiration, * disassociation is still forced. * + * @NL80211_ATTR_MULTI_BSSID_MODE: Set the (Non-)Transmitted flag for this + * BSSIDs beacon. + * + * @NL80211_ATTR_MULTI_BSSID_PARENT: If this is a Non-Transmitted BSSID, define + * the parent interface. + * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -2945,6 +2951,9 @@ enum nl80211_attrs { NL80211_ATTR_PMK_LIFETIME, NL80211_ATTR_PMK_REAUTH_THRESHOLD, + NL80211_ATTR_MULTI_BSSID_MODE, + NL80211_ATTR_MULTI_BSSID_PARENT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -6700,6 +6709,22 @@ enum nl80211_peer_measurement_ftm_failure_reasons { NL80211_PMSR_FTM_FAILURE_BAD_CHANGED_PARAMS, }; +/** + * enum nl80211_multi_bssid_mode - Multiple BSSID beacon type + * + * Used by cfg80211_ap_settings + * + * @MULTIPLE_BSSID_LEGACY: This BSS is not part of a multiple BSSID group + * @MULTIPLE_BSSID_TRANSMITTED: This BSS is broadcasting a multiple BSSID + * beacon + * @MULTIPLE_BSSID_NON_TRANSMITTED: This BSS is not broadcasting a beacon + */ +enum nl80211_multi_bssid_mode { + NL80211_MULTIPLE_BSSID_LEGACY = 0, + NL80211_MULTIPLE_BSSID_TRANSMITTED, + NL80211_MULTIPLE_BSSID_NON_TRANSMITTED, +}; + /** * enum nl80211_peer_measurement_ftm_resp - FTM response attributes * @__NL80211_PMSR_FTM_RESP_ATTR_INVALID: invalid diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ed545b2a958d..3b502514944c 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -663,6 +663,10 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG }, [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1), [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100), + [NL80211_ATTR_MULTI_BSSID_MODE] = NLA_POLICY_RANGE(NLA_U8, + NL80211_MULTIPLE_BSSID_LEGACY, + NL80211_MULTIPLE_BSSID_NON_TRANSMITTED), + [NL80211_ATTR_MULTI_BSSID_PARENT] = { .type = NLA_U32 }, }; /* policy for the key attributes */ @@ -3756,6 +3760,16 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) if (err < 0) return err; + if (info->attrs[NL80211_ATTR_MULTI_BSSID_MODE]) + params.multi_bssid_mode = + nla_get_u8(info->attrs[NL80211_ATTR_MULTI_BSSID_MODE]); + if (info->attrs[NL80211_ATTR_MULTI_BSSID_PARENT]) + params.multi_bssid_parent = + nla_get_u8(info->attrs[NL80211_ATTR_MULTI_BSSID_PARENT]); + if (params.multi_bssid_mode == NL80211_MULTIPLE_BSSID_NON_TRANSMITTED && + !params.multi_bssid_parent) + return -EOPNOTSUPP; + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM;