Hi -
The vnet is up and running. Check it out. You'll need to do a world
rebuild, thanks to a header change (increased the size of struct ceq,
which helps us watch FD taps for all possible kernel FDs).
Highlights include:
- The guest and host can both use the network
- Port forwarding from the host to the guest
- Guest and host can contact one another
- Protocol 'bypass' command in the kernel
- You can run snoopy on #srv/snoop-PID to see all the VM's traffic.
There's a bunch of other bug fixes, library helpers, and minor
enhancements. Check out the commits.
To test it, you'll need to rebuild the world (at least glibc and
probably most apps). Pass -n VNET_OPTS_FILE to set up things like port
forwarding. (see kern/kfs/vnet_opts_example for details).
Example, from my workstation:
$ ssh linux-guest
( '>')
/) TC (\ Core is distributed with ABSOLUTELY NO WARRANTY.
(/-_--_-\) www.tinycorelinux.net
tc@box:~$ ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:01:02:03:04:0B
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::201:2ff:fe03:40b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:255 errors:0 dropped:0 overruns:0 frame:0
TX packets:190 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:31197 (30.4 KiB) TX bytes:27483 (26.8 KiB)
tc@box:~$ wget www.akaros.org/files/test.html
Connecting to www.akaros.org (146.148.59.222:80)
test.html 100% |**********************| 24 0:00:00 ETA
tc@box:~$ cat test.html
Nanwan says, "Ship it!"
tc@box:~$ ssh host
Warning: Permanently added '10.0.2.2' (RSA) to the list of known hosts.
-sh: can't access tty; job control turned off
/ $ draw_nanwan
.-. .-.
| \/ |
/, ,_ `'-.
.-|\ /`\ '.
.' 0/ | 0\ \_ `".
.-' _,/ '--'.'|#''---'
`--' | / \#
| / \#
\ ;|\ .\#
|' ' // \ ::\#
\ /` \ ':\#
`"` \.. \#
\::. \#
\:: \#
\' .:\#
\ :::\#
\ '::\#
\ \#
\:. \#
\:: \#
\' .\#
jgs \ ::\#
\
/ $ Connection to 10.0.2.2 closed.
tc@box:~$ Connection to 127.0.0.1 closed.
>From akaros, let's see the NAT mappings:
bash-4.3$ notify 278 9
The VMM prints (to its stderr):
VNET NAT maps:
---------------
proto 17, host 27865, guest 48723, FD 22, stale 0, static 0, ref 1
proto 6, host 23, guest 22, FD 14, stale 0, static 1, ref 1
proto 6, host 6401, guest 53622, FD 23, stale 0, static 0, ref 1
proto 6, host 6402, guest 37956, FD 24, stale 0, static 0, ref 1
Wait a little while, print them again. Unused maps are eventually reaped:
VNET NAT maps:
---------------
proto 6, host 23, guest 22, FD 14, stale 0, static 1, ref 1
I have a few more fixups to do (like track down a VMCS unload bug and
do other vmm cleanup), but for now I think the vnet/NAT stuff is fine.
Barret
----------------------------------------------------------------
The following changes since commit 1ec18f3e0435a20843162a9e1cb32d3aec8a093a:
mmu64: for completeness sake, define PML4_REACH (XCC) (2017-01-09 12:07:15
-0500)
are available in the git repository at:
[email protected]:brho/akaros.git net
for you to fetch changes up to 4b2d04931bc9b8e941de0b99c06c60688b8b4a4f:
vmm: Add a virtual networking layer (2017-01-09 15:24:15 -0500)
----------------------------------------------------------------
View this online at:
https://github.com/brho/akaros/compare/1ec18f3e0435...4b2d04931bc9
----------------------------------------------------------------
Barret Rhoden (39):
fdtap: Check for bad event queues
qio: Live with Qmsg
net: Remove unused qlock from UDP and ICMP6
net: Remove the newconv() function pointer
net: Don't pretend the proto qlock is thread safe
net: Add a protocol 'bypass' command for convs
net: Pull up the header to determine IP version
net: Checksum loopback packets
iplib: Clang-format iplib C files
iplib: Refactor announce9(), add clone9()
iplib: Add helpers for bypass
iplib: Add a helper for IP checksums
iplib: Fix thread-unsafeness in myipaddr
iplib: Add get_first_noloop_iplifc() helper
iplib: Allow v4parsecidr() to take longer masks
iplib: Add a helper for finding the IP router
iplib: Add protocol constants to iplib.h
iplib: Make netmkaddr() threadsafe
Swap library dependencies for tests
Build all user libraries with -Werror
Use make -jX by default
parlib: Add parlib_assert_perror()
parlib: Include event type headers in event.h
parlib: Add krefs
parlib: Have all processes listen for diagnostics
parlib: Add IOVEC helpers
vmm: Use a helper for stripping the iovec
pipe: Add a ctl and "oneblock" command
Don't attempt namec_from from non-O_PATH FDs
Add a synth_buf to chan
ip: Use a synthetic buffer for iproute
Allow larger CEQs (XCC)
epoll: Support very large CEQ sets
Make chan->flag 32 bits
Set CEXTERNAL_FLAGS early on create()
Do not allow setting O_REMCLO with fcntl()
srv: Support remove on close
parlib: Add option file parsing helper
vmm: Add a virtual networking layer
Makefile | 11 +-
Makelocal.template | 3 +
kern/drivers/dev/mem.c | 12 +-
kern/drivers/dev/pipe.c | 43 +-
kern/drivers/dev/srv.c | 30 +-
kern/include/ip.h | 7 +-
kern/include/ns.h | 7 +-
kern/include/ros/ceq.h | 1 +
kern/src/ceq.c | 14 +-
kern/src/fdtap.c | 8 +-
kern/src/net/devip.c | 155 +++-
kern/src/net/icmp6.c | 10 -
kern/src/net/ip.c | 1 +
kern/src/net/loopbackmedium.c | 1 +
kern/src/net/tcp.c | 39 +-
kern/src/net/udp.c | 35 +-
kern/src/ns/chan.c | 10 +-
kern/src/ns/qio.c | 5 +-
kern/src/ns/sysfile.c | 4 +
tests/Makefile | 2 +-
tests/ping.c | 4 +-
tests/ttcp.c | 4 +-
tests/vmm/vmrunkernel.c | 89 ++-
tools/apps/ipconfig/ipconfig.h | 4 -
user/iplib/announce.c | 240 ++++--
user/iplib/bo.c | 68 +-
user/iplib/classmask.c | 28 +-
user/iplib/dial.c | 65 +-
user/iplib/epoll.c | 27 +-
user/iplib/equivip.c | 22 +-
user/iplib/getfields.c | 22 +-
user/iplib/include/iplib/iplib.h | 70 +-
user/iplib/ipaux.c | 19 +-
user/iplib/myetheraddr.c | 23 +-
user/iplib/myipaddr.c | 105 ++-
user/iplib/netmkaddr.c | 63 +-
user/iplib/parseether.c | 19 +-
user/iplib/parseip.c | 140 ++--
user/iplib/poll.c | 4 +-
user/iplib/ptclbsum.c | 63 +-
user/iplib/readipifc.c | 142 ++--
user/iplib/select.c | 38 +-
user/iplib/tokenize.c | 46 +-
user/parlib/ceq.c | 25 +-
user/parlib/include/parlib/assert.h | 10 +
user/parlib/include/parlib/event.h | 3 +
user/parlib/include/parlib/iovec.h | 31 +
user/parlib/include/parlib/kref.h | 57 ++
user/parlib/include/parlib/opts.h | 12 +
user/parlib/iovec.c | 202 +++++
user/parlib/opts.c | 63 ++
user/parlib/uthread.c | 4 +
user/vmm/include/vmm/net.h | 45 ++
user/vmm/include/vmm/virtio_net.h | 2 +-
user/vmm/nat.c | 1441 +++++++++++++++++++++++++++++++++++
user/vmm/virtio_net.c | 92 +--
56 files changed, 2999 insertions(+), 691 deletions(-)
mode change 100755 => 100644 user/iplib/announce.c
mode change 100755 => 100644 user/iplib/bo.c
mode change 100755 => 100644 user/iplib/classmask.c
mode change 100755 => 100644 user/iplib/dial.c
mode change 100755 => 100644 user/iplib/equivip.c
mode change 100755 => 100644 user/iplib/getfields.c
mode change 100755 => 100644 user/iplib/ipaux.c
mode change 100755 => 100644 user/iplib/myetheraddr.c
mode change 100755 => 100644 user/iplib/myipaddr.c
mode change 100755 => 100644 user/iplib/netmkaddr.c
mode change 100755 => 100644 user/iplib/parseether.c
mode change 100755 => 100644 user/iplib/parseip.c
mode change 100755 => 100644 user/iplib/ptclbsum.c
mode change 100755 => 100644 user/iplib/readipifc.c
mode change 100755 => 100644 user/iplib/tokenize.c
create mode 100644 user/parlib/include/parlib/iovec.h
create mode 100644 user/parlib/include/parlib/kref.h
create mode 100644 user/parlib/include/parlib/opts.h
create mode 100644 user/parlib/iovec.c
create mode 100644 user/parlib/opts.c
create mode 100644 user/vmm/include/vmm/net.h
create mode 100644 user/vmm/nat.c
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