Provide direct access to IPLayer

Question

Provide direct access to IPLayer

Closed this issue a year ago · 1 comments

Instead of having to retrieve a full packet, then call IPLayer() it would be beneficial to provide direct access to the IPLayer without additional overhead / complexity.

Answer 1 · 2023-03-15T14:54:23.000Z

Using the IPLayer directly via the newly provided interface method NextIPLayer() improves capture speed on goProbe by about 14% (simply by reducing the additional call overhead for constructing / deconstructing the IP layer from the overall packet). Stack / zero-heap allocations are maintained.

BEFORE: Packets processed after 10s: 274923717 (36ns/pkt)
 AFTER: Packets processed after 10s: 315290255 (31ns/pkt)