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all: move network monitoring from wgengine/monitor to net/netmon

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We're using it in more and more places, and it's not really specific to
our use of Wireguard (and does more just link/interface monitoring).

Also removes the separate interface we had for it in sockstats -- it's
a small enough package (we already pull in all of its dependencies
via other paths) that it's not worth the extra complexity.

Updates #7621
Updates #7850

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This commit is contained in:
Mihai Parparita
2023-04-18 14:26:58 -07:00
committed by Mihai Parparita
parent 3ede3aafe4
commit 4722f7e322
51 changed files with 266 additions and 270 deletions
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12
net/dns/resolver/forwarder.go
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@@ -25,6 +25,7 @@ import (
"tailscale.com/net/dns/publicdns"
"tailscale.com/net/dnscache"
"tailscale.com/net/neterror"
"tailscale.com/net/netmon"
"tailscale.com/net/netns"
"tailscale.com/net/sockstats"
"tailscale.com/net/tsdial"
@@ -34,7 +35,6 @@ import (
"tailscale.com/util/cloudenv"
"tailscale.com/util/dnsname"
"tailscale.com/version"
"tailscale.com/wgengine/monitor"
)
// headerBytes is the number of bytes in a DNS message header.
@@ -176,7 +176,7 @@ type resolverAndDelay struct {
// forwarder forwards DNS packets to a number of upstream nameservers.
type forwarder struct {
logf logger.Logf
linkMon *monitor.Mon
netMon *netmon.Monitor
linkSel ForwardLinkSelector // TODO(bradfitz): remove this when tsdial.Dialer absorbs it
dialer *tsdial.Dialer
@@ -206,10 +206,10 @@ func init() {
rand.Seed(time.Now().UnixNano())
}
func newForwarder(logf logger.Logf, linkMon *monitor.Mon, linkSel ForwardLinkSelector, dialer *tsdial.Dialer) *forwarder {
func newForwarder(logf logger.Logf, netMon *netmon.Monitor, linkSel ForwardLinkSelector, dialer *tsdial.Dialer) *forwarder {
f := &forwarder{
logf: logger.WithPrefix(logf, "forward: "),
linkMon: linkMon,
netMon: netMon,
linkSel: linkSel,
dialer: dialer,
}
@@ -355,7 +355,7 @@ func (f *forwarder) packetListener(ip netip.Addr) (nettype.PacketListenerWithNet
return stdNetPacketListener, nil
}
lc := new(net.ListenConfig)
if err := initListenConfig(lc, f.linkMon, linkName); err != nil {
if err := initListenConfig(lc, f.netMon, linkName); err != nil {
return nil, err
}
return nettype.MakePacketListenerWithNetIP(lc), nil
@@ -763,7 +763,7 @@ func (f *forwarder) forwardWithDestChan(ctx context.Context, query packet, respo
}
}
var initListenConfig func(_ *net.ListenConfig, _ *monitor.Mon, tunName string) error
var initListenConfig func(_ *net.ListenConfig, _ *netmon.Monitor, tunName string) error
// nameFromQuery extracts the normalized query name from bs.
func nameFromQuery(bs []byte) (dnsname.FQDN, error) {