Commit Graph

13 Commits

Author SHA1 Message Date
David Scott
b72e8de310 tap-vsockd: if the client closes, be prepared to reconnect
In `connect` mode the client looping calling `connect` and `close` on a timer.
This could result in the server accepting the connection and the client accidentally
closing it immediately. This patch makes `tap-vsockd` keep trying to (re-)establish
the connection. Note that daemonization is delayed until after the first successful
negotiation, so attempts to send a packet afterwards should succeed.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:51:32 +01:00
David Scott
67bc700af3 tap-vsockd: use stderr rather than syslog if service guid is wrong
Our convention is to print command-line parse failures to the terminal
to allow easier interactive debugging, rather than sending them to
the syslog.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:51:32 +01:00
David Scott
1142bbb611 tap-vsockd: remove the Windows compatibility shim
Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:51:32 +01:00
David Scott
a493947c9c tap-vsockd: support daemonization via a --daemon arg
We daemonize after checking the command-line and binding/connecting
the socket and creating the tap device. Only the ethernet frame
processing happens afterwards.

This patch also includes a new well-known service GUID for the
VPN-proxy ethernet service.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:50:52 +01:00
David Scott
54001a1d06 tap-vsockd: support both connect() and accept()
Older versions of the Linux AF_HVSOCK can only accept() as they
don't allow connections to the parent partition. Support both
modes for now.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
6ad649b77b tap-vsockd: add a --pidfile <pidfile> argument
Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
f498bf69e1 tap-vsockd: exit non-zero if the server cannot start
Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
1103dc40e9 tap-vsockd: add basic logging support
By default we write to syslog. If the `--debug` argument is provided
then we also write to stderr.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
3fcf9b7e9b tap-vsockd: set the MAC address on the TAP device
The vmnet protocol expects to tell the client what the MAC address is.
This patch sets it on the TAP device.

Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
4fa693777f tap-vsockd: proxy between the hyper-v socket and the tap device
Signed-off-by: David Scott <dave.scott@docker.com>
2016-05-21 14:49:55 +01:00
David Scott
20a92cfc3b tap-vsockd: open the tap device, connect the hvsock and negotiate
Signed-off-by: David Scott <dave@recoil.org>
2016-05-21 14:49:55 +01:00
David Scott
8669c643cf tap-vsockd: add a function to open a TAP device
Signed-off-by: David Scott <dave@recoil.org>
2016-05-21 14:49:55 +01:00
David Scott
292b94a1f4 tap-vsockd: add skeleton with hyper-v sockets
Signed-off-by: David Scott <dave@recoil.org>
2016-05-21 14:49:50 +01:00