Josh Bleecher Snyder
334c09ab19
comment more
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
3e6e5a2eee
incorporate recvOut into recvReqs
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
6ec3378f7b
remove more dead code
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
385f86e85f
document, cull dead code
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
52ccff8835
WIP: clean shutdown for UDP conn
...
this appears to work, most of the time.
there's lots of documentation work remaining,
thinking through the structure remaining,
testing remaining,
porting to file remaining (if appropriate).
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
2118b821cd
remove dead code
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
1e3e5fd8e7
overhaul error handling of peek/waitcompletion
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
e0d8dcf3eb
refactor
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
c1bc58defc
set sin_family (oops)
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
7cb1369b19
remove some TODOs, make ip address extraction equally awful
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
f274a0cfab
simplify change point
...
at the cost of some very, very naughty unsafe
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
f71ff18c11
convert manual tests into automated tests
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
f27a61502d
start cleaning up code
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
a98ed81f2e
ipv6 support, UNTESTED, super hacky
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
275cb37031
comments
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
9559752cb5
fix io_uring tun device reads
...
Well that's an interesting one!
Apparently if you issue multiple concurrent preadv calls on
a TUN device using io_uring, the TUN device falls over.
Possibly corrupting memory along the way.
Which might be why the kernel hung on shutdown...
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
b05f305eaf
simpler init
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
e337ed2033
stick closer to upstream tun reading code
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
0fb656794c
make cgo pointer rules happy
...
well that was a mess
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
283614d5e9
use io_uring for sendmsg
...
and clean up some dead code and unify some things
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
11036e23a1
disable polling for now
...
we'll maybe bring it back with a token bucket or something.
and/or do multi-sqe submission.
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
522fa9306e
they work with extra junk
...
thanks, dave
no thanks, kernel devs
write no work
use writev
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
7fd5e31070
tun writes...not working yet (but why not??)
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
a03ee93e21
use polling instead of syscall
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
56ba714e10
smush together two return values from C
...
avoids a per-packet alloc
i will atone for my sins later
if only C let you return multiple values.
or Go let you pass in a pointer w/o it being on the heap.
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
bb78cf81b6
keep 8 requests in the queue at all times
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
38a872d2c1
remove all allocs
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
6ef301e787
remove all allocations
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
48e338130e
mve sockaddr_in to Go
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
56ece41326
move iovec to go
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
f75d32151b
move msghdr to Go
2021-07-13 15:15:16 -07:00
Josh Bleecher Snyder
fcdc9086a2
use io_uring
2021-07-13 15:15:16 -07:00