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From: Michael Buesch <mb-fseUSCV1ubazQB+pC5nmwQ@public.gmane.org>
To: radiotap-rN9S6JXhQ+WXmMXjJBpWqg@public.gmane.org
Cc: Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
Subject: Adding "no-ack" flag to the radiotap flags
Date: Fri, 21 Mar 2008 21:32:55 +0100	[thread overview]
Message-ID: <200803212132.55970.mb@bu3sch.de> (raw)

Hi.

Currently, there's no way to define whether the hardware
should wait for an ACK for an injected frame or not.
This can be a performance bottleneck, as the hardware will
try to retransmit until it receives an ACK.

I suggest adding
#define IEEE80211_RADIOTAP_F_NOACK	0x40
so an application can define that it is not interested in
an ACK for the frame and the card should not bother retrying until
it received one.
When this flag is not set, the standard rules apply.

I don't see a use-case for overriding these rules to always
_expect_ an ACK, so I think a one-bit flag is OK.

-- 
Greetings Michael.

             reply	other threads:[~2008-03-21 20:32 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-21 20:32 Michael Buesch [this message]
     [not found] ` <200803212132.55970.mb-fseUSCV1ubazQB+pC5nmwQ@public.gmane.org>
2008-06-19 19:21   ` Adding "no-ack" flag to the radiotap flags Johannes Berg

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