Correct net80211 channel flag.

[Adrian Chadd]

hm!

On Mon, 29 Mar 2021 at 08:02, qcwap <1051244836 at qq.com> wrote:
>
> This patch corrects ieee80211_vht_get_vhtcap_ie for 160/80P80 channel width recognition.
>
> diff --git a/sys/net80211/ieee80211.h b/sys/net80211/ieee80211.h
> index 86ab1459cca..76c43629b33 100644
> --- a/sys/net80211/ieee80211.h
> +++ b/sys/net80211/ieee80211.h
> @@ -811,9 +811,9 @@ struct ieee80211_ie_vht_operation {
>  #define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK   0x0000000C
>  #define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK_S 2
>  #define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_NONE           0
> -#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160MHZ         1
> -#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160_80P80MHZ   2
> -#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_RESERVED       3
> +#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160MHZ         4
> +#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160_80P80MHZ   8
> +#define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_RESERVED       16
>
>  #define        IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ(_vhtcaps)            \
>      (_IEEE80211_MASKSHIFT(_vhtcaps, IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK) >= \


This is the flag change from the draft 11ac spec to the released 11ac
spec, right?

I remember they needed to change the flags because existing draft
implementations got the 80+80/160MHz negotiation really badly wrong in
some interop places...



-adrian

>
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