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wgengine/magicsock: start removing endpointForDiscoKey

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It's not valid to assume that a discokey is globally unique.

This removes the first two of the four callers.

Updates #3088

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-10-15 14:40:49 -07:00 committed by Brad Fitzpatrick
parent 7817ab6b20
commit 82fa15fa3b
2 changed files with 12 additions and 5 deletions
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15
wgengine/magicsock/magicsock.go
View File

@ -109,6 +109,13 @@ func (m *peerMap) nodeCount() int {
return len(m.byNodeKey)
}
// anyEndpointForDiscoKey reports whether there exists any
// peers in the netmap with dk as their DiscoKey.
func (m *peerMap) anyEndpointForDiscoKey(dk tailcfg.DiscoKey) bool {
_, ok := m.byDiscoKey[dk]
return ok
}
// endpointForDiscoKey returns the endpoint for dk, or nil
// if dk is not known to us.
func (m *peerMap) endpointForDiscoKey(dk tailcfg.DiscoKey) (ep *endpoint, ok bool) {
@ -831,12 +838,12 @@ func (c *Conn) SetNetInfoCallback(fn func(*tailcfg.NetInfo)) {
}
}
// LastRecvActivityOfDisco describes the time we last got traffic from
// LastRecvActivityOfNodeKey describes the time we last got traffic from
// this endpoint (updated every ~10 seconds).
func (c *Conn) LastRecvActivityOfDisco(dk tailcfg.DiscoKey) string {
func (c *Conn) LastRecvActivityOfNodeKey(nk tailcfg.NodeKey) string {
c.mu.Lock()
defer c.mu.Unlock()
de, ok := c.peerMap.endpointForDiscoKey(dk)
de, ok := c.peerMap.endpointForNodeKey(nk)
if !ok {
return "never"
}
@ -2171,7 +2178,7 @@ func (c *Conn) SetNetworkMap(nm *netmap.NetworkMap) {
// discokeys might have changed in the above. Discard unused cached keys.
for discoKey := range c.sharedDiscoKey {
if _, ok := c.peerMap.endpointForDiscoKey(discoKey); !ok {
if !c.peerMap.anyEndpointForDiscoKey(discoKey) {
delete(c.sharedDiscoKey, discoKey)
}
}

2
wgengine/pendopen.go
View File

@ -231,7 +231,7 @@ func (e *userspaceEngine) onOpenTimeout(flow flowtrack.Tuple) {
e.logf("open-conn-track: timeout opening %v to node %v; online=%v, lastRecv=%v",
flow, n.Key.ShortString(),
online,
e.magicConn.LastRecvActivityOfDisco(n.DiscoKey))
e.magicConn.LastRecvActivityOfNodeKey(n.Key))
}
func durFmt(t time.Time) string {