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tailscale/wgengine
Josh Bleecher Snyder b3ceca1dd7 wgengine/...: split into multiple receive functions
Upstream wireguard-go has changed its receive model.
NewDevice now accepts a conn.Bind interface.

The conn.Bind is stateless; magicsock.Conns are stateful.
To work around this, we add a connBind type that supports
cheap teardown and bring-up, backed by a Conn.

The new conn.Bind allows us to specify a set of receive functions,
rather than having to shoehorn everything into ReceiveIPv4 and ReceiveIPv6.
This lets us plumbing DERP messages directly into wireguard-go,
instead of having to mux them via ReceiveIPv4.

One consequence of the new conn.Bind layer is that
closing the wireguard-go device is now indistinguishable
from the routine bring-up and tear-down normally experienced
by a conn.Bind. We thus have to explicitly close the magicsock.Conn
when the close the wireguard-go device.

One downside of this change is that we are reliant on wireguard-go
to call receiveDERP to process DERP messages. This is fine for now,
but is perhaps something we should fix in the future.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
..
filter net/packet, wgengine/{filter,tstun}: add TSMP ping 4 years ago
magicsock wgengine/...: split into multiple receive functions 4 years ago
monitor wgengine/monitor: Linux fall back to polling 4 years ago
netstack wgengine/netstack: stop re-adding IPs registered by active TCP connections (#1629) 4 years ago
router wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig. 4 years ago
wgcfg wgengine/...: split into multiple receive functions 4 years ago
wglog wgengine/wglog: drop 1/s "interface is up" messages. 4 years ago
winnet wgengine/winnet: don't build on non-windows 4 years ago
pendopen.go net/tstun: rename TUN to Wrapper. 4 years ago
userspace.go wgengine/...: split into multiple receive functions 4 years ago
userspace_test.go wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig. 4 years ago
watchdog.go wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig. 4 years ago
watchdog_test.go wgengine: extend TestWatchdog timeout on macOS 4 years ago
wgengine.go wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig. 4 years ago