From 636ccdae4e17398fea4d55c7224fbac897e519df Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 30 Nov 2021 13:16:59 +0200 Subject: [PATCH] mac80211: add more HT/VHT/HE state logging Add more logging in places that affect HT/VHT/HE state, so things get easier to debug. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20211130131608.ac51d574458c.If197b45c5b31d2fbd254fa12c2d7c736f304d4ae@changeid Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 45 +++++++++++++++++++++++++++++++++------------ 1 file changed, 33 insertions(+), 12 deletions(-) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 4dbed50..0a854ca 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -164,12 +164,15 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, chandef->freq1_offset = channel->freq_offset; if (channel->band == NL80211_BAND_6GHZ) { - if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef)) + if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef)) { + mlme_dbg(sdata, + "bad 6 GHz operation, disabling HT/VHT/HE\n"); ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT | IEEE80211_STA_DISABLE_HE; - else + } else { ret = 0; + } vht_chandef = *chandef; goto out; } else if (sband->band == NL80211_BAND_S1GHZ) { @@ -190,6 +193,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); if (!ht_oper || !sta_ht_cap.ht_supported) { + mlme_dbg(sdata, "HT operation missing / HT not supported\n"); ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT | IEEE80211_STA_DISABLE_HE; @@ -223,6 +227,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { ieee80211_chandef_ht_oper(ht_oper, chandef); } else { + mlme_dbg(sdata, "40 MHz not supported\n"); /* 40 MHz (and 80 MHz) must be supported for VHT */ ret = IEEE80211_STA_DISABLE_VHT; /* also mark 40 MHz disabled */ @@ -231,6 +236,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, } if (!vht_oper || !sband->vht_cap.vht_supported) { + mlme_dbg(sdata, "VHT operation missing / VHT not supported\n"); ret = IEEE80211_STA_DISABLE_VHT; goto out; } @@ -253,7 +259,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, &vht_chandef)) { if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) sdata_info(sdata, - "HE AP VHT information is invalid, disable HE\n"); + "HE AP VHT information is invalid, disabling HE\n"); ret = IEEE80211_STA_DISABLE_HE; goto out; } @@ -263,7 +269,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, &vht_chandef)) { if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) sdata_info(sdata, - "AP VHT information is invalid, disable VHT\n"); + "AP VHT information is invalid, disabling VHT\n"); ret = IEEE80211_STA_DISABLE_VHT; goto out; } @@ -271,7 +277,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, if (!cfg80211_chandef_valid(&vht_chandef)) { if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) sdata_info(sdata, - "AP VHT information is invalid, disable VHT\n"); + "AP VHT information is invalid, disabling VHT\n"); ret = IEEE80211_STA_DISABLE_VHT; goto out; } @@ -284,7 +290,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) sdata_info(sdata, - "AP VHT information doesn't match HT, disable VHT\n"); + "AP VHT information doesn't match HT, disabling VHT\n"); ret = IEEE80211_STA_DISABLE_VHT; goto out; } @@ -5036,19 +5042,23 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, /* disable HT/VHT/HE if we don't support them */ if (!sband->ht_cap.ht_supported && !is_6ghz) { + mlme_dbg(sdata, "HT not supported, disabling HT/VHT/HE\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_HT; ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; ifmgd->flags |= IEEE80211_STA_DISABLE_HE; } if (!sband->vht_cap.vht_supported && is_5ghz) { + mlme_dbg(sdata, "VHT not supported, disabling VHT/HE\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; ifmgd->flags |= IEEE80211_STA_DISABLE_HE; } if (!ieee80211_get_he_iftype_cap(sband, - ieee80211_vif_type_p2p(&sdata->vif))) + ieee80211_vif_type_p2p(&sdata->vif))) { + mlme_dbg(sdata, "HE not supported, disabling it\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_HE; + } if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) { ht_oper = elems->ht_operation; @@ -5072,6 +5082,8 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, } if (!elems->vht_cap_elem) { + sdata_info(sdata, + "bad VHT capabilities, disabling VHT\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; vht_oper = NULL; } @@ -5119,8 +5131,10 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, break; } - if (!have_80mhz) + if (!have_80mhz) { + sdata_info(sdata, "80 MHz not supported, disabling VHT\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; + } if (sband->band == NL80211_BAND_S1GHZ) { s1g_oper = elems->s1g_oper; @@ -5684,12 +5698,14 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, else if (!is_6ghz) ifmgd->flags |= IEEE80211_STA_DISABLE_HT; vht_elem = ieee80211_bss_get_elem(req->bss, WLAN_EID_VHT_CAPABILITY); - if (vht_elem && vht_elem->datalen >= sizeof(struct ieee80211_vht_cap)) + if (vht_elem && vht_elem->datalen >= sizeof(struct ieee80211_vht_cap)) { memcpy(&assoc_data->ap_vht_cap, vht_elem->data, sizeof(struct ieee80211_vht_cap)); - else if (is_5ghz) + } else if (is_5ghz) { + sdata_info(sdata, "VHT capa missing/short, disabling VHT/HE\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_VHT | IEEE80211_STA_DISABLE_HE; + } rcu_read_unlock(); if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && @@ -5763,16 +5779,21 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, } if (req->flags & ASSOC_REQ_DISABLE_HT) { + mlme_dbg(sdata, "HT disabled by flag, disabling HT/VHT/HE\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_HT; ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; ifmgd->flags |= IEEE80211_STA_DISABLE_HE; } - if (req->flags & ASSOC_REQ_DISABLE_VHT) + if (req->flags & ASSOC_REQ_DISABLE_VHT) { + mlme_dbg(sdata, "VHT disabled by flag, disabling VHT\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; + } - if (req->flags & ASSOC_REQ_DISABLE_HE) + if (req->flags & ASSOC_REQ_DISABLE_HE) { + mlme_dbg(sdata, "HE disabled by flag, disabling VHT\n"); ifmgd->flags |= IEEE80211_STA_DISABLE_HE; + } err = ieee80211_prep_connection(sdata, req->bss, true, override); if (err) -- 2.7.4