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Re: Question about ieee802_1d_to_ac

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On 10/16/2012 10:04 AM, David Shwatrz wrote:
Hello,

I see in net/mac80211/wme.c:
...
const int ieee802_1d_to_ac[8] = {
	IEEE80211_AC_BE,
	IEEE80211_AC_BK,
	IEEE80211_AC_BK,
	IEEE80211_AC_BE,
	IEEE80211_AC_VI,
	IEEE80211_AC_VI,
	IEEE80211_AC_VO,
	IEEE80211_AC_VO
};
...

This is the correct mapping if you want to trust the IEEE802.11e standard (Table 20i).

Gr. AvS

As I understand, this values stand for queues for different types of traffic:
IEEE80211_AC_BE is  best-effort traffic ,
IEEE80211_AC_BK is background traffic ,
IEEE80211_AC_VI is video traffic,
IEEE80211_AC_VO is voice traffic.

We see that entries 6,7 are  voice and entries 4,5 are video.
Is it not an error that entries 2,3 differ ? and also 0,1 ?

shouldn't it be:
const int ieee802_1d_to_ac[8] = {
	IEEE80211_AC_BE,
	IEEE80211_AC_BE,
	IEEE80211_AC_BK,
	IEEE80211_AC_BK,


Regards,
D Shwartz
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