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Reduce heap allocations (#42)

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* pcap: reuse Frame memory

* slog: reduce heap allocations of addresses; also prevent heap alloc of dhcp options in pcap

* dns: heapless improvement; add StackAsync buffer for more heapless operation; start thinking of errors

* reuse function for reclaiming frames among all protocols for lower memory usage

* remove extraneous code
This commit is contained in:
Pat Whittingslow
2026-02-27 16:38:33 +01:00
committed by GitHub
parent 92b54487df
commit f9748da94f
11 changed files with 198 additions and 130 deletions
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internet/stack-ip.go
+1 -1
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@@ -104,7 +104,7 @@ func (sb *StackIP) Demux(carrierData []byte, offset int) error {
// nodeIdx := getNodeByProto(sb.handlers, uint16(proto))
if node == nil {
// Drop packet.
sb.handlers.info("ip:demux.drop", slog.String("dstaddr", netip.AddrFrom4(*ifrm.DestinationAddr()).String()), slog.String("proto", ifrm.Protocol().String()))
sb.handlers.info("ip:demux.drop", internal.SlogAddr4("dstaddr", ifrm.DestinationAddr()), slog.String("proto", ifrm.Protocol().String()))
return lneto.ErrPacketDrop
}
// Incoming CRC Validation of common IP Protocols.