wgengine/magicsock: finish TODO to speed up peerMap.forEachEndpointWithDiscoKey

Now that peerMap tracks the set of nodes for a DiscoKey.

Updates #3088

Change-Id: I927bf2bdfd2b8126475f6b6acc44bc799fcb489f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-10-18 14:38:03 -07:00 committed by Brad Fitzpatrick
parent c6ea282b3f
commit 7a243ae5b1

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@ -153,12 +153,17 @@ func (m *peerMap) forEachEndpoint(f func(ep *endpoint)) {
// forEachEndpointWithDiscoKey invokes f on every endpoint in m // forEachEndpointWithDiscoKey invokes f on every endpoint in m
// that has the provided DiscoKey. // that has the provided DiscoKey.
func (m *peerMap) forEachEndpointWithDiscoKey(dk tailcfg.DiscoKey, f func(ep *endpoint)) { func (m *peerMap) forEachEndpointWithDiscoKey(dk tailcfg.DiscoKey, f func(ep *endpoint)) {
// TODO(bradfitz): once byDiscoKey is a set of endpoints, then range for nk := range m.nodesOfDisco[dk] {
// over that instead. pi, ok := m.byNodeKey[nk]
for _, pi := range m.byNodeKey { if !ok {
if pi.ep.discoKey == dk { // Unexpected. Data structures would have to
f(pi.ep) // be out of sync. But we don't have a logger
// here to log [unexpected], so just skip.
// Maybe log later once peerMap is merged back
// into Conn.
continue
} }
f(pi.ep)
} }
} }