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mac80211: add ability to parse CCFS2

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With newer VHT implementations, it's necessary to look at the
HT operation's CCFS2 field to identify the actual bandwidth
used.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2018-08-31 11:31:18 +03:00
parent 09b4a4faf9
commit 7eb26df297
6 changed files with 50 additions and 22 deletions
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5
net/mac80211/spectmgmt.c
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@@ -144,6 +144,7 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
wide_bw_chansw_ie->new_center_freq_seg1,
/* .basic_mcs_set doesn't matter */
};
struct ieee80211_ht_operation ht_oper = {};
/* default, for the case of IEEE80211_VHT_CHANWIDTH_USE_HT,
* to the previously parsed chandef
@@ -151,7 +152,9 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
new_vht_chandef = csa_ie->chandef;
/* ignore if parsing fails */
if (!ieee80211_chandef_vht_oper(&vht_oper, &new_vht_chandef))
if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
&vht_oper, &ht_oper,
&new_vht_chandef))
new_vht_chandef.chan = NULL;
if (sta_flags & IEEE80211_STA_DISABLE_80P80MHZ &&