Port Linuxulator to IfAPI

[dchagin]

please, linsysfs, linprocfs and /compat/linux by separate commits.

sys/compat/linux/linux_ioctl.c

2147

can't find its definition

2152

at least this weird API

sys/compat/linux/linux_util.h

45

should be in separate commit

[jhibbits]

In D38349#871120, @dchagin wrote:

please, linsysfs, linprocfs and /compat/linux by separate commits.

Will do. I naively lumped them together, thinking they were interrelated.

sys/compat/linux/linux_ioctl.c

2147

This API is in D38348.

2152

The API, in D38348, will return on non-zero callback return. I chose that because from what I've found, the vast majority of iterations over V_ifnet are to search for something and break out after finding that something, whereas the majority of iterations over the if_maddr and if_addr are to apply some transform over all addresses on an interface, and searching for a specific address is less common.

sys/compat/linux/linux_util.h

45

Oops, this shouldn't have gone in.

[jhibbits]

Address feedback. Break out linprocfs and linsysfs, revert inintended change.

[dchagin]

sys/compat/linux/linux.c

276

[jhibbits]

sys/compat/linux/linux.c

276

Tried changing all uses of struct ifnet * in the Linuxulator, but ran into a problem with linux_util.h. Need to include <net/if.h>, and ifr_name conflicts with a #define in linux32/linux.h, so I'll punt for now and try to address it later.

[dchagin]

sys/compat/linux/linux.c

276

ah, In my local queue I have some changes for linux_util.h, I would prefer to commit in on a next week, before you.
as I plan to mfc it. About ifr_name - we can rename it to lifr_name, etc... for example

[jhibbits]

I'll keep this in my queue and wait for your change to land first, then. Thanks!

[dchagin]

In D38349#873363, @jhibbits wrote:

I'll keep this in my queue and wait for your change to land first, then. Thanks!

ugh, sorry for the delay, covid(( Im finished, thank you!