changesets:10875:7365362b1198

dev: replace pollevent in ethertap
This patch removes PollEvent from ethertap for receiving incoming Ethernet

packets from real world. Instead of PollEvent, it make ethertap socket

non-blocking and checks for incoming packets every "poll_rate" ticks.
The problem with pollevent is that it does not capture incoming packets

immediately and causes late packet reception when we use ethertap in pd-gem5