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Zoltan Papp
5c9c64e3e0
* [client] Reuse one wgctrl client in the kernel configurer The kernel configurer opened a new wgctrl client for every request, paying a socket open, a generic netlink family lookup and a close on each peer update. With 10000 peers a single update dropped from about 37us to 10us per call once the client is kept open. The configurer now opens the client lazily on the first request and keeps it. A failed request drops the client so the next one opens a fresh socket: a reply cut short mid-dump leaves stale messages in the netlink buffer, and reusing that socket would fail every later request on a sequence mismatch. The failed request is not retried. Close releases the client and rejects later requests instead of reopening a socket nobody would close. The kernel device never closed its configurer, so it now keeps it and closes it on teardown.