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mac80211 overview
Johannes Martin Berg
2009-02-25
Introduction
mac80211
•
is a subsystem to the Linux kernel
•
implements shared code for soft-MAC/half-MAC wireless
devices
•
contains MLME and other code, despite the name
2 / 47 2009-02-25
Introduction – History (non-technical)
January 2006 John Linville starts as wireless maintainer
April 2006 First wireless summit (Beaverton)
May 1, 2006 Devicescape press release
(Advanced Datapath Driver as GPLv2)
May 2006 - May 2007 Lots of work on stack
(initially much by Jiri Benc/SuSE)
including rename from d80211 to mac80211
May 5, 2007 Merged for 2.6.22
Oct 23, 2007 I first ’officially’ take mac80211 responsibility
3 / 47 2009-02-25
Introduction – History (technical)
Some notable additions to mac80211:
HT/aggregation support Intel
802.11s draft support cozybit through o11s.org
802.11w draft support Jouni Malinen (Atheros)
PS (infrastructure mode) Kalle Valo (Nokia)
Vivek Natarajan (Atheros)
beacon processing offload (WIP) Kalle Valo (Nokia)
4 / 47 2009-02-25
Introduction – History (technical)
beacon processing offload
•
beacon processing
•
beacon miss actions
•
signal strength monitoring
•
beacon change monitoring
•
offload
•
don’t use software for above tasks
•
have device (firmware) do this
•
results in much fewer CPU wakeups
5 / 47 2009-02-25
剩余46页未读,继续阅读
资源评论
- zgyangchong2013-08-26谢谢,写的好像还不错,要慢慢看了。。。。。。
- 刷csdn的小男孩2014-06-16不错,本科设计的时候完成的是802.11,现在为了积分,特来评论。
- wanghaihui19912012-12-18很详细,很有用,谢谢
subailong
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