From patchwork Mon May 27 13:53:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Eckelmann X-Patchwork-Id: 10963221 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D7723112C for ; Mon, 27 May 2019 13:53:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C3CFD28B04 for ; Mon, 27 May 2019 13:53:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B87A028B1F; Mon, 27 May 2019 13:53:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0086D28B04 for ; Mon, 27 May 2019 13:53:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726545AbfE0Nx4 (ORCPT ); Mon, 27 May 2019 09:53:56 -0400 Received: from narfation.org ([79.140.41.39]:57082 "EHLO v3-1039.vlinux.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726353AbfE0Nx4 (ORCPT ); Mon, 27 May 2019 09:53:56 -0400 Received: from sven-desktop.home.narfation.org (p200300C5970B91EA00000000000002FB.dip0.t-ipconnect.de [IPv6:2003:c5:970b:91ea::2fb]) by v3-1039.vlinux.de (Postfix) with ESMTPSA id EAE1A1100DC; Mon, 27 May 2019 15:53:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=narfation.org; s=20121; t=1558965233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=q+RkFk2fD/MD3doLVuCoZWkHnZEHbUcXxgt3b7zypiw=; b=Lc0xnmIjaQ93/GEceuBLB09q2I7hF8m/rBykBAOfMIyoIlMJzyqoS74U5jvohw0Qu/CZbF Y7MzOVIBRiLbKCsqhBV/hk1fEz8dhKPWapsd/zzqAo0Xm4y7/XibxX5nzw6/XuY5F5S/qS 5F0Zw0ZdyCyDDut5aMofGtkljOk6ibw= From: Sven Eckelmann To: linux-wireless@vger.kernel.org Cc: Sven Eckelmann Subject: [RFC PATCH 2/2] mac80211: implement HE support for mesh Date: Mon, 27 May 2019 15:53:40 +0200 Message-Id: <20190527135340.15600-2-sven@narfation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190527135340.15600-1-sven@narfation.org> References: <20190527135340.15600-1-sven@narfation.org> MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=narfation.org; s=20121; t=1558965233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=q+RkFk2fD/MD3doLVuCoZWkHnZEHbUcXxgt3b7zypiw=; b=N9TEOcEf1kd+dBi2r1TjWGR2eJgFjdinII/TT1s2UGagYBabAiciFe4lFREA7BEeouAbcI cvDcG83thPqwD7yj+H4NQUO2IRJjnanP/F5wYum0qKixSQEE2LjQ+Zxu5sPsQY1OGqBDo2 WF61+I3mudvJLgaRs1dbbRW0O5JpTnM= ARC-Seal: i=1; s=20121; d=narfation.org; t=1558965233; a=rsa-sha256; cv=none; b=RTM/xZMYtPEEsJDIu2F9g2/3HzDii/QDPXfQQ+krgTosTn91rozFgr0VPyjSwJWHh7hA9m VO4M7h0RRcrmzDzCJxDOVVHxiaT0QK+1Mc2OPCaB5P7T/QRcRWXnD6b7KJhoC4sOPV0hqi Pb2N6AZCADaJgm9xZIztqckfJBuD2/k= ARC-Authentication-Results: i=1; ORIGINATING; auth=pass smtp.auth=sven smtp.mailfrom=sven@narfation.org Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sven Eckelmann Implement the basics required for supporting high efficiency with mesh: include HE information elements in beacons, probe responses, and peering action frames, and check for compatible HE configurations when peering. Signed-off-by: Sven Eckelmann --- include/net/cfg80211.h | 19 ++++++++++++ net/mac80211/ieee80211_i.h | 2 ++ net/mac80211/mesh.c | 61 ++++++++++++++++++++++++++++++++++++++ net/mac80211/mesh.h | 4 +++ net/mac80211/mesh_plink.c | 11 ++++++- net/mac80211/util.c | 52 ++++++++++++++++++++++++++++++++ 6 files changed, 148 insertions(+), 1 deletion(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 13bfeb712d36..9caa0ca5020d 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -399,6 +399,25 @@ ieee80211_get_he_sta_cap(const struct ieee80211_supported_band *sband) return NULL; } +/** + * ieee80211_get_he_mesh_cap - return HE capabilities for an sband's mesh STA + * @sband: the sband to search for the mesh STA on + * + * Return: pointer to the struct ieee80211_sta_he_cap, or NULL is none found + */ +static inline const struct ieee80211_sta_he_cap * +ieee80211_get_he_mesh_cap(const struct ieee80211_supported_band *sband) +{ + const struct ieee80211_sband_iftype_data *data = + ieee80211_get_sband_iftype_data(sband, + NL80211_IFTYPE_MESH_POINT); + + if (data && data->he_cap.has_he) + return &data->he_cap; + + return NULL; +} + /** * wiphy_read_of_freq_limits - read frequency limits from device tree * diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index e170f986d226..dea736cdf60b 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -2126,9 +2126,11 @@ u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, u32 cap); u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, const struct cfg80211_chan_def *chandef); +u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata); u8 *ieee80211_ie_build_he_cap(u8 *pos, const struct ieee80211_sta_he_cap *he_cap, u8 *end); +u8 *ieee80211_ie_build_he_oper(u8 *pos); int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, const struct ieee80211_supported_band *sband, const u8 *srates, int srates_len, u32 *rates); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 766e5e5bab8a..47ef885c4060 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -535,6 +535,61 @@ int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata, return 0; } +int mesh_add_he_cap_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, u8 ie_len) +{ + const struct ieee80211_sta_he_cap *he_cap; + struct ieee80211_supported_band *sband; + u8 *pos; + + sband = ieee80211_get_sband(sdata); + if (!sband) + return -EINVAL; + + he_cap = ieee80211_get_he_mesh_cap(sband); + + if (!he_cap || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10) + return 0; + + if (skb_tailroom(skb) < ie_len) + return -ENOMEM; + + pos = skb_put(skb, ie_len); + ieee80211_ie_build_he_cap(pos, he_cap, pos + ie_len); + + return 0; +} + +int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + const struct ieee80211_sta_he_cap *he_cap; + struct ieee80211_supported_band *sband; + u8 *pos; + + sband = ieee80211_get_sband(sdata); + if (!sband) + return -EINVAL; + + he_cap = ieee80211_get_he_mesh_cap(sband); + if (!he_cap || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10) + return 0; + + if (skb_tailroom(skb) < 2 + 1 + sizeof(struct ieee80211_he_operation)) + return -ENOMEM; + + pos = skb_put(skb, 2 + 1 + sizeof(struct ieee80211_he_operation)); + ieee80211_ie_build_he_oper(pos); + + return 0; +} + static void ieee80211_mesh_path_timer(struct timer_list *t) { struct ieee80211_sub_if_data *sdata = @@ -680,6 +735,7 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) struct ieee80211_chanctx_conf *chanctx_conf; struct mesh_csa_settings *csa; enum nl80211_band band; + u8 ie_len_he_cap; u8 *pos; struct ieee80211_sub_if_data *sdata; int hdr_len = offsetofend(struct ieee80211_mgmt, u.beacon); @@ -690,6 +746,7 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) band = chanctx_conf->def.chan->band; rcu_read_unlock(); + ie_len_he_cap = ieee80211_ie_len_he_cap(sdata); head_len = hdr_len + 2 + /* NULL SSID */ /* Channel Switch Announcement */ @@ -709,6 +766,8 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) 2 + sizeof(__le16) + /* awake window */ 2 + sizeof(struct ieee80211_vht_cap) + 2 + sizeof(struct ieee80211_vht_operation) + + ie_len_he_cap + + 2 + 1 + sizeof(struct ieee80211_he_operation) + ifmsh->ie_len; bcn = kzalloc(sizeof(*bcn) + head_len + tail_len, GFP_KERNEL); @@ -826,6 +885,8 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) mesh_add_awake_window_ie(sdata, skb) || mesh_add_vht_cap_ie(sdata, skb) || mesh_add_vht_oper_ie(sdata, skb) || + mesh_add_he_cap_ie(sdata, skb, ie_len_he_cap) || + mesh_add_he_oper_ie(sdata, skb) || mesh_add_vendor_ies(sdata, skb)) goto out_free; diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h index 574c3891c4b2..af1d9154b255 100644 --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h @@ -221,6 +221,10 @@ int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); +int mesh_add_he_cap_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, u8 ie_len); +int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb); void mesh_rmc_free(struct ieee80211_sub_if_data *sdata); int mesh_rmc_init(struct ieee80211_sub_if_data *sdata); void ieee80211s_init(void); diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 8afd0ece94c9..e18e433fde29 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -221,9 +221,11 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, bool include_plid = false; u16 peering_proto = 0; u8 *pos, ie_len = 4; + u8 ie_len_he_cap; int hdr_len = offsetofend(struct ieee80211_mgmt, u.action.u.self_prot); int err = -ENOMEM; + ie_len_he_cap = ieee80211_ie_len_he_cap(sdata); skb = dev_alloc_skb(local->tx_headroom + hdr_len + 2 + /* capability info */ @@ -236,6 +238,8 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, 2 + sizeof(struct ieee80211_ht_operation) + 2 + sizeof(struct ieee80211_vht_cap) + 2 + sizeof(struct ieee80211_vht_operation) + + ie_len_he_cap + + 2 + 1 + sizeof(struct ieee80211_he_operation) + 2 + 8 + /* peering IE */ sdata->u.mesh.ie_len); if (!skb) @@ -324,7 +328,9 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, if (mesh_add_ht_cap_ie(sdata, skb) || mesh_add_ht_oper_ie(sdata, skb) || mesh_add_vht_cap_ie(sdata, skb) || - mesh_add_vht_oper_ie(sdata, skb)) + mesh_add_vht_oper_ie(sdata, skb) || + mesh_add_he_cap_ie(sdata, skb, ie_len_he_cap) || + mesh_add_he_oper_ie(sdata, skb)) goto free; } @@ -436,6 +442,9 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, elems->vht_cap_elem, sta); + ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, elems->he_cap, + elems->he_cap_len, sta); + if (bw != sta->sta.bandwidth) changed |= IEEE80211_RC_BW_CHANGED; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 4c1655972565..d86925438b5f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2663,6 +2663,30 @@ u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, return pos; } +u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) +{ + const struct ieee80211_sta_he_cap *he_cap; + struct ieee80211_supported_band *sband; + u8 ie_len; + u8 n; + + sband = ieee80211_get_sband(sdata); + if (!sband) + return 0; + + he_cap = ieee80211_get_he_mesh_cap(sband); + if (!he_cap) + return 0; + + n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); + ie_len = 2 + 1 + + sizeof(he_cap->he_cap_elem) + n + + ieee80211_he_ppe_size(he_cap->ppe_thres[0], + he_cap->he_cap_elem.phy_cap_info); + + return ie_len; +} + u8 *ieee80211_ie_build_he_cap(u8 *pos, const struct ieee80211_sta_he_cap *he_cap, u8 *end) @@ -2852,6 +2876,34 @@ u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, return pos + sizeof(struct ieee80211_vht_operation); } +u8 *ieee80211_ie_build_he_oper(u8 *pos) +{ + struct ieee80211_he_operation *he_oper; + u32 he_oper_params; + + *pos++ = WLAN_EID_EXTENSION; + *pos++ = 1 + sizeof(struct ieee80211_he_operation); + *pos++ = WLAN_EID_EXT_HE_OPERATION; + + he_oper_params = 0; + he_oper_params |= u32_encode_bits(1023, /* disabled */ + IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); + he_oper_params |= u32_encode_bits(1, + IEEE80211_HE_OPERATION_ER_SU_DISABLE); + he_oper_params |= u32_encode_bits(1, + IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); + + he_oper = (struct ieee80211_he_operation *)pos; + he_oper->he_oper_params = cpu_to_le32(he_oper_params); + + /* don't require special HE peer rates */ + he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); + + /* TODO add VHT operational and 6GHz operational subelement? */ + + return pos + sizeof(struct ieee80211_vht_operation); +} + bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, struct cfg80211_chan_def *chandef) {