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Re: [PATCH 1/2] mac80211: do not use low data rates for data frames with no ack flag

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On Tue, May 18, 2021 at 01:19:46PM +0200, Johannes Berg wrote:
> On Tue, 2021-05-18 at 13:17 +0200, Felix Fietkau wrote:
> > 
> > Frames with IEEE80211_TX_CTL_HW_80211_ENCAP set have no 802.11 header,
> > so please change the check something like this:
> > 
> > 	if ((info->flags & IEEE80211_TX_CTL_NO_ACK) &&
> > 	    ((info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) ||
> > 	     ieee80211_is_data(hdr->frame_control)))
> 
> Maybe we should consider some kind of inline helper?
> 
> static inline bool ieee80211_is_tx_data(struct sk_buff *skb)
> {
> 	... *info = ...
> 	... *hdr = (void *)skb->data;
> 
> 	return (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) ||
>                ieee80211_is_data(hdr->frame_control);
> }

A frame with IEEE80211_TX_CTL_HW_80211_ENCAP set is always a data frame?

Should I put the definition of the function into include/net/mac80211.h?



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