Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:37125 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750956AbcGMLm1 (ORCPT ); Wed, 13 Jul 2016 07:42:27 -0400 From: Yaniv Machani To: CC: Yaniv Machani , Meirav Kama , Johannes Berg , "David S. Miller" , , Subject: [PATCH 3/3] mac80211: mesh: fixed HT ies in beacon template Date: Wed, 13 Jul 2016 14:45:40 +0300 Message-ID: <20160713114542.24937-1-yanivma@ti.com> (sfid-20160713_134301_570441_D22B86B1) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: The HT capab info field inside the HT capab IE of the mesh beacon is incorrect (in the case of 20MHz channel width). To fix this driver will check configuration from cfg and will build it accordingly. Signed-off-by: Meirav Kama Signed-off-by: Yaniv Machani --- V3 - Updated comment - Removed CFG changes, as they are not correct. net/mac80211/mesh.c | 33 ++++++++++++++++++++++++++++++++- net/mac80211/util.c | 3 --- 2 files changed, 32 insertions(+), 4 deletions(-) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 9214bc1..275131d 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -422,6 +422,8 @@ int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata, enum nl80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_supported_band *sband; u8 *pos; + u16 cap; + sband = local->hw.wiphy->bands[band]; if (!sband->ht_cap.ht_supported || @@ -430,11 +432,40 @@ int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10) return 0; + /* determine capability flags */ + cap = sband->ht_cap.cap; + + /* if channel width is 20MHz - configure HT capab accordingly*/ + if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_DSSSCCK40; + } + + /* set SM PS mode properly */ + cap &= ~IEEE80211_HT_CAP_SM_PS; + switch (sdata->smps_mode) { + case IEEE80211_SMPS_AUTOMATIC: + case IEEE80211_SMPS_NUM_MODES: + WARN_ON(1); + case IEEE80211_SMPS_OFF: + cap |= WLAN_HT_CAP_SM_PS_DISABLED << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_STATIC: + cap |= WLAN_HT_CAP_SM_PS_STATIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_DYNAMIC: + cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + } + if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) return -ENOMEM; pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); - ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap); + ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, cap); return 0; } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 42bf0b6..5375a82 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2349,10 +2349,7 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, ht_oper->operation_mode = cpu_to_le16(prot_mode); ht_oper->stbc_param = 0x0000; - /* It seems that Basic MCS set and Supported MCS set - are identical for the first 10 bytes */ memset(&ht_oper->basic_set, 0, 16); - memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); return pos + sizeof(struct ieee80211_ht_operation); } -- 2.9.0