Date: Wed, 22 Aug 2012 17:37:45 -0700 From: Adrian Chadd <adrian@freebsd.org> To: "Wright, Brett" <Brett.Wright@cooperindustries.com> Cc: freebsd-wireless@freebsd.org, Kim Culhan <w8hdkim@gmail.com> Subject: Re: Atheros DFS radar detection Message-ID: <CAJ-VmokJWfsJCNDKfG0nnzGZ4fAwBOtTPC1Wb-K9fjXKsEyY4g@mail.gmail.com> In-Reply-To: <CAJ-VmomJZD_NBM8=N1oD1a0XCFLoXoezStXHKLKCSGLBFrKT2Q@mail.gmail.com> References: <CAKZxVQU-%2BW9AP4a9W0PGyLmBOa1GVOrGcLC8bp5zW_=K%2Bv3tHA@mail.gmail.com> <475A4E02EFF4724A9E58F55A56AC13160641D618@APEVS1.ap.ci.root> <CAKZxVQWeOnw_kZWzuXfHSS-ssQfGVG=ybYK%2B%2B8EaqnFVe-rLpg@mail.gmail.com> <CAJ-Vmon=NfyZW9vJRSNxTLZvJhobeCP-S1O3TxopNzArWunCCQ@mail.gmail.com> <475A4E02EFF4724A9E58F55A56AC13160661E6AC@APEVS1.ap.ci.root> <CAJ-VmomJZD_NBM8=N1oD1a0XCFLoXoezStXHKLKCSGLBFrKT2Q@mail.gmail.com>
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hi, would you mind filing a couple of PRs, just so I remember to get this stuff done: * please add a HAL method to fetch the default radar parameters; * please modify the AR5212 HAL to disable some of the fast diversity stuff if radar is enabled; * please modify dfs_null to fetch the default radar parameters and disable the appropriate fast diversity stuff; * please modify the AR5212 HAL to disable 5GHz ANI operation if radar reporting is enabled. I've whacked an AR5212 reference cardbus NIC into a laptop and added the AR5212 parameters to dfs_null.c. I get around 40 false detects a second when doing around 25mbit/sec TCP iperf test. So there may be something specific about your NIC(s) and antenna setup. I'll try to setup some other 11a NICs (AR5213, AR5312, AR5413, etc) and see what the story is. I know the AR5212 parameters I have are working, but I also know the AR5413 Adrian
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