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From: Johannes Berg <johannes@sipsolutions.net>
To: Felix Fietkau <nbd@openwrt.org>,
	Janusz Dziedzic <janusz.dziedzic@tieto.com>,
	linux-wireless@vger.kernel.org
Subject: Re: [RFC/RFT 1/2] mac80211: Add NEED_ALIGNED4_SKBS hw flag
Date: Thu, 17 Dec 2015 11:45:21 +0100	[thread overview]
Message-ID: <1450349121.8247.26.camel@sipsolutions.net> (raw)
In-Reply-To: <56728FE7.4090006@openwrt.org>

On Thu, 2015-12-17 at 11:35 +0100, Felix Fietkau wrote:
> 
> On many devices that I'm using, the data path is definitely too
> bloated
> for the packet to still be in cache, so I do think this will help.
> Remember, having only 32 KiB Dcache (no L2) is not uncommon on
> devices
> running ath9k.

Hm, ok :)

> > And on status it will be pulled into the cache
> > anyway, and you don't even need the write to happen before you can
> > continue.
> This doesn't make sense to me. The write needs to happen before the
> device can do DMA...
> 

On *status* :)

johannes

      reply	other threads:[~2015-12-17 10:45 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-17  9:20 [RFC/RFT 1/2] mac80211: Add NEED_ALIGNED4_SKBS hw flag Janusz Dziedzic
2015-12-17  9:20 ` [RFC/RFT 2/2] ath9k: request aligned skb Janusz Dziedzic
2015-12-21 18:53   ` Souptick Joarder
2015-12-21 22:48     ` Julian Calaby
2015-12-17  9:39 ` [RFC/RFT 1/2] mac80211: Add NEED_ALIGNED4_SKBS hw flag Felix Fietkau
2015-12-17 10:04 ` Johannes Berg
2015-12-17 10:09   ` Felix Fietkau
2015-12-17 10:12 ` Felix Fietkau
2015-12-18  8:43   ` Janusz Dziedzic
2015-12-17 10:29 ` Johannes Berg
2015-12-17 10:35   ` Felix Fietkau
2015-12-17 10:45     ` Johannes Berg [this message]

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