Dmitriy Matrenichev 6bb1e99aa3

chore: optimize pcap dump ...

Reimplement `gopacket.PacketSource.PacketsCtx` as `forEachPacket`.

- Use `ZeroCopyPacketDataSource` instead of `PacketDataSource`. I didn't find any specific reason why `PacketDataSource` exists at all, since `NewPacket` is doing copy inside if you don't explicitly tell it not to.
- Use `WillPool` to pool packet buffers. It doesn't fully remove allocations, but it's a safe start.
  Send packets back into the pool after we are done with them.
- Pass `Packet` directly to the closure instead of waiting for it on the channel. We don't store this packet anywhere so there is no reason to async this part.
- Drop `time.Sleep` code in `forEachPacket` body.
- Drop `SnapLen` support in client and server since it didn't work anyway (details in the PR).

Closes #7994

Signed-off-by: Dmitriy Matrenichev <dmitry.matrenichev@siderolabs.com>

2023-12-11 15:44:42 +03:00

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