From patchwork Thu Aug 27 13:00:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bob Copeland X-Patchwork-Id: 7084691 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 1D2069F22E for ; Thu, 27 Aug 2015 13:00:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6D5820761 for ; Thu, 27 Aug 2015 13:00:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5DCCB2073A for ; Thu, 27 Aug 2015 13:00:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754583AbbH0NAp (ORCPT ); Thu, 27 Aug 2015 09:00:45 -0400 Received: from mail-io0-f171.google.com ([209.85.223.171]:33462 "EHLO mail-io0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754560AbbH0NAn (ORCPT ); Thu, 27 Aug 2015 09:00:43 -0400 Received: by iods203 with SMTP id s203so55718638iod.0 for ; Thu, 27 Aug 2015 06:00:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=mOs5fSk68D71nh/A5kQu+AfIgOMRpsLJ2mvIgRIjiqw=; b=e4/vVtN5jaOwcLhJrwM7eIT/VGGwW8EMI8DSpfjYlgrHcvf75IPKCHZp/kJAJVNI3W 7LjkgkgdRiSxTFJrbFR94tddwU5fCpl3By2cHrqLN7iC3rqpLOjECmys9AMRntoJEoHY GRs6gGxVzTEVAPjqSsZqsy49vg0J5IdthnSQOow+WGhbSYvPlnBQl43U+SeyVHGrLxg9 r9st+Wc4dgzKJN0lG+3eBuNnfNfZeMDJy/TA9P2E8cAXqYcaRwLqrbWA53AX3fq1hPj8 t6QJOTo4k9tCJKjzqaktLF9r1LExzPuJt39UQ1DXFOHsZ+MdgAoxqYGeDku4YnraOtNU E3ZQ== X-Gm-Message-State: ALoCoQl1rnU4puQZ3EwmMLe4Q49CbkcCysLCvU/pTB+DwVfIz4OWuI1tTU///pxbHVeTXiUE7VtT X-Received: by 10.107.11.17 with SMTP id v17mr10640340ioi.184.1440680442122; Thu, 27 Aug 2015 06:00:42 -0700 (PDT) Received: from hash ([2001:470:1d:6db:230:48ff:fe9d:9c89]) by smtp.gmail.com with ESMTPSA id p5sm5941174ige.1.2015.08.27.06.00.40 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Aug 2015 06:00:40 -0700 (PDT) Received: from bob by hash with local (Exim 4.84) (envelope-from ) id 1ZUwmz-00058c-9C; Thu, 27 Aug 2015 09:00:21 -0400 From: Bob Copeland To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Bob Copeland Subject: [PATCH 1/4] mac80211: implement VHT support for mesh Date: Thu, 27 Aug 2015 09:00:18 -0400 Message-Id: <1440680418-19714-1-git-send-email-me@bobcopeland.com> X-Mailer: git-send-email 2.1.4 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement the basics required for supporting very high throughput with mesh: include VHT information elements in beacons, probe responses, and peering action frames, and check for compatible VHT configurations when peering. Signed-off-by: Bob Copeland --- [resend with correct linux-wireless address] net/mac80211/mesh.c | 76 +++++++++++++++++++++++++++++++++++++++++++++-- net/mac80211/mesh.h | 4 +++ net/mac80211/mesh_plink.c | 9 +++++- 3 files changed, 85 insertions(+), 4 deletions(-) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index e06a5ca..62b3e29 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -94,6 +94,9 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata, ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, ie->ht_operation, &sta_chan_def); + ieee80211_vht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, + ie->vht_operation, &sta_chan_def); + if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef, &sta_chan_def)) return false; @@ -436,8 +439,6 @@ int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_channel *channel; - enum nl80211_channel_type channel_type = - cfg80211_get_chandef_type(&sdata->vif.bss_conf.chandef); struct ieee80211_supported_band *sband; struct ieee80211_sta_ht_cap *ht_cap; u8 *pos; @@ -454,7 +455,10 @@ int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata, sband = local->hw.wiphy->bands[channel->band]; ht_cap = &sband->ht_cap; - if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT) + if (!ht_cap->ht_supported || + 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 + sizeof(struct ieee80211_ht_operation)) @@ -467,6 +471,68 @@ int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata, return 0; } +int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + struct ieee80211_local *local = sdata->local; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); + struct ieee80211_supported_band *sband; + u8 *pos; + + sband = local->hw.wiphy->bands[band]; + if (!sband->vht_cap.vht_supported || + 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 + sizeof(struct ieee80211_vht_cap)) + return -ENOMEM; + + pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); + ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, sband->vht_cap.cap); + + return 0; +} + +int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *channel; + struct ieee80211_supported_band *sband; + struct ieee80211_sta_vht_cap *vht_cap; + u8 *pos; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return -EINVAL; + } + channel = chanctx_conf->def.chan; + rcu_read_unlock(); + + sband = local->hw.wiphy->bands[channel->band]; + vht_cap = &sband->vht_cap; + + if (!vht_cap->vht_supported || + 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 + sizeof(struct ieee80211_vht_operation)) + return -ENOMEM; + + pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_operation)); + ieee80211_ie_build_vht_oper(pos, vht_cap, + &sdata->vif.bss_conf.chandef); + + return 0; +} + static void ieee80211_mesh_path_timer(unsigned long data) { struct ieee80211_sub_if_data *sdata = @@ -637,6 +703,8 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) 2 + ifmsh->mesh_id_len + 2 + sizeof(struct ieee80211_meshconf_ie) + 2 + sizeof(__le16) + /* awake window */ + 2 + sizeof(struct ieee80211_vht_cap) + + 2 + sizeof(struct ieee80211_vht_operation) + ifmsh->ie_len; bcn = kzalloc(sizeof(*bcn) + head_len + tail_len, GFP_KERNEL); @@ -718,6 +786,8 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) mesh_add_meshid_ie(sdata, skb) || mesh_add_meshconf_ie(sdata, skb) || mesh_add_awake_window_ie(sdata, skb) || + mesh_add_vht_cap_ie(sdata, skb) || + mesh_add_vht_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 50c8473..c60be85 100644 --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h @@ -227,6 +227,10 @@ int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); +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); 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 e12be2e..2222067 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -226,6 +226,8 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, 2 + sizeof(struct ieee80211_meshconf_ie) + 2 + sizeof(struct ieee80211_ht_cap) + 2 + sizeof(struct ieee80211_ht_operation) + + 2 + sizeof(struct ieee80211_vht_cap) + + 2 + sizeof(struct ieee80211_vht_operation) + 2 + 8 + /* peering IE */ sdata->u.mesh.ie_len); if (!skb) @@ -306,7 +308,9 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, if (action != WLAN_SP_MESH_PEERING_CLOSE) { if (mesh_add_ht_cap_ie(sdata, skb) || - mesh_add_ht_oper_ie(sdata, skb)) + mesh_add_ht_oper_ie(sdata, skb) || + mesh_add_vht_cap_ie(sdata, skb) || + mesh_add_vht_oper_ie(sdata, skb)) goto free; } @@ -402,6 +406,9 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, elems->ht_cap_elem, sta)) changed |= IEEE80211_RC_BW_CHANGED; + ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, + elems->vht_cap_elem, sta); + if (bw != sta->sta.bandwidth) changed |= IEEE80211_RC_BW_CHANGED;