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Hello, I work with the UNH-IOL to test conformance of 11n MAC, we have been trying to implement our test suite over an atheros 11n card. We have most of the test suite working except for two issues that are preventing us finishing the implementation: 1. turning off retries 2. setting a hard rate on transmit We tried to use iwconfig to set retry and rates but it seems to ignore those settings, we then tried to use the radiotap header to no success, we then tried to start modifying the atheros drivers and still did not meet with much success. We are using lorcon over the mac80211 driver for injection, with the ath9k driver. Right now we have been modifying the driver in the 3.5 kernel, but we can use any version that you recommend. An example of something that we have already tried to not transmit retries is below, from xmit.c, line 316: hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_RETRY); to hdr->frame_control |= cpu_to_le16(0x0000); To try and force it not to set the retry bit, but this did not seem to do anything. Do you have any pointers on what we might try next? Thanks! --
Mikkel Hagen Research and Development Data Center Bridging/FC/Wireless/SAS/SATA/OFA/iWARP Consortiums Phone:1-603-862-0701 Fax:1-603-862-4181 UNH-IOL 121 Technology Drive, Suite 2 Durham, NH 03824   |
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