Differential D50096 Diff 154746 sys/net80211/ieee80211_vht.c

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sys/net80211/ieee80211_vht.c

Show First 20 Lines • Show All 986 Lines • ▼ Show 20 Lines	ieee80211_vht_check_tx_vht80(const struct ieee80211_node *ni)
struct ieee80211_channel *bss_chan;		struct ieee80211_channel *bss_chan;

if (!ieee80211_vht_check_tx_vht(ni))		if (!ieee80211_vht_check_tx_vht(ni))
return (false);		return (false);

vap = ni->ni_vap;		vap = ni->ni_vap;
bss_chan = vap->iv_bss->ni_chan;		bss_chan = vap->iv_bss->ni_chan;

		/*
		* ni_chw represents 20MHz or 40MHz from the HT
		* TX width action frame / HT channel negotiation.
		* If a HT TX width action frame sets it to 20MHz
		* then reject doing 80MHz.
		*/
return (IEEE80211_IS_CHAN_VHT80(bss_chan) &&		return (IEEE80211_IS_CHAN_VHT80(bss_chan) &&
IEEE80211_IS_CHAN_VHT80(ni->ni_chan) &&		IEEE80211_IS_CHAN_VHT80(ni->ni_chan) &&
(ni->ni_chw == IEEE80211_STA_RX_BW_80));		(ni->ni_chw != IEEE80211_STA_RX_BW_20));
}		}

/*		/*
* Return true if VHT 160 rates can be transmitted to the given node.		* Return true if VHT 160 rates can be transmitted to the given node.
*		*
* This verifies that the BSS is VHT80+80 or VHT160 capable and the current		* This verifies that the BSS is VHT80+80 or VHT160 capable and the current
* node channel width is 80+80MHz or 160MHz.		* node channel width is 80+80MHz or 160MHz.
*/		*/
static bool		static bool
ieee80211_vht_check_tx_vht160(const struct ieee80211_node *ni)		ieee80211_vht_check_tx_vht160(const struct ieee80211_node *ni)
{		{
struct ieee80211vap *vap;		struct ieee80211vap *vap;
struct ieee80211_channel *bss_chan;		struct ieee80211_channel *bss_chan;

if (!ieee80211_vht_check_tx_vht(ni))		if (!ieee80211_vht_check_tx_vht(ni))
return (false);		return (false);

vap = ni->ni_vap;		vap = ni->ni_vap;
bss_chan = vap->iv_bss->ni_chan;		bss_chan = vap->iv_bss->ni_chan;

if (ni->ni_chw != IEEE80211_STA_RX_BW_160)		/*
		* ni_chw represents 20MHz or 40MHz from the HT
		* TX width action frame / HT channel negotiation.
		* If a HT TX width action frame sets it to 20MHz
		* then reject doing 160MHz.
		*/
		if (ni->ni_chw == IEEE80211_STA_RX_BW_20)
return (false);		return (false);

if (IEEE80211_IS_CHAN_VHT160(bss_chan) &&		if (IEEE80211_IS_CHAN_VHT160(bss_chan) &&
IEEE80211_IS_CHAN_VHT160(ni->ni_chan))		IEEE80211_IS_CHAN_VHT160(ni->ni_chan))
return (true);		return (true);

if (IEEE80211_IS_CHAN_VHT80P80(bss_chan) &&		if (IEEE80211_IS_CHAN_VHT80P80(bss_chan) &&
IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan))		IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan))
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