Hi Josef, We looked at the problem and could you give this commit [1] a try (it is > still WIP and not finalized). It might be helpful to add a diagnostic > message to 'alloc' in 'usb/packet_handler.h' to see when the situation > occurs. > > [1] https://github.com/cnuke/genode/commit/8b4896e7 >
I think I understand the logic of this commit, and in general it seems to me a better way of handling the scheduling. I used cherry-pick to add it to my branch [1], and it seemed to work the same as before. That said, I am unable to trigger the signal handler issue with my hardware, even using 'sudo ping -f'. > 1. Adapt your current version (that is based on the PC platform) by > using the PC wifi driver as a template to the way the other drivers > are by now implemented. That could involve making additions to the > wireless stack but that's fine as merging your changes eventually > would be the preferred way. > Ok, I think there won't need to be many changes to the wireless stack, but the USB emulation code needs to be somewhere. So I suppose I should add a lx_emul_usb.c to the dde_linux/lib/wifi directory, and besides that it will require the code from wlan_usb.cc and wlan_usb.h to be copied somewhere. As a most convenient option that can be in the same directory. Alternatively such code could live somewhere in lx_kit/lx_emul independent of wifi, if someone wanted to use it for porting another type of USB device driver, but for now that might be too optimistic. -CP [1] https://github.com/cvparker/genode/tree/usb_wifi-2023-06-18
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