CVSROOT: /cvs
Module name: src
Changes by: s...@cvs.openbsd.org 2021/09/11 11:28:44
Modified files:
sys/dev/pci : if_iwx.c
Log message:
Zero out iwx(4) Tx descriptors of frames which are done.
This will hopefully prevent the device from ever writing to the former
DMA address of a buffer which has been taken off the Tx ring.
As far as I understand, the Linux driver unmaps (parts of) Tx descriptors
that are done. We use a static DMA mapping for the entire descriptor array,
so unmapping is not an option for us.
Tested by several as part of my Tx aggregation support patch.
