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greearb / ath10k-ct

Stand-alone ath10k driver based on Candela Technologies Linux kernel.
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Set tx-antenna pattern on a per-peer basis #179

Closed francescamen closed 3 years ago

francescamen commented 3 years ago

I'm trying to use the functionality to set tx-antenna pattern on a per-peer basis. My hardware has 4 antennas and I want to assign two of them to one specific peer with id 1. As stated in the instructions, if I want to set peer-id 0x1 to use antenna pattern 0xc I have to do the following: # echo 0x130001000c > ct_special However, when I check if the set has been executed correctly, looking at the dmesg output, I see the following: ath10k_pci 0000:01:00.0: Setting ct-andmask for peer: 1 to 0x4. I don't know if the problem is related to hardware constraints or it is only a problem with the print. In that respect, I'm wondering why, in the file debug.c, the value to be printed is masked with 0x16. I would mask it with 0x1F instead. ath10k_warn(ar, "Setting ct-andmask for peer: %d to 0x%x.\n", val >> 16, val & 0x16); Is this the problem? Thank you.

Hardware: Netgear R7800 NIC chipset: QCA9984 Firmware version 10.4b-ct

greearb commented 3 years ago

Thank for debugging this, I think you are right and this is just a printing error. Were you able to see any actual change in behaviour when you set the peer antenna mask like this?

greearb commented 3 years ago

I added the fix to my 5.10 and higher drivers, easy enough to add to older ones if someone cares to. It is cosmetic issue anyway.