Re: Bestcomm trouble with NAPI for MPC5200 FEC

Wolfram Sang wrote:

Hello Wolfgang,

quoted

I'm currently trying to implement NAPI for the FEC on the MPC5200 to
solve the well known problem, that network packet storms can cause
interrupt flooding, which may totally block the system. The NAPI

Just bombard the FEC with network packets. I use pktgen on the host and
I could send you a script if you like.

That's great news. Do you happen to have a scenario which reliably triggers the
problem? Then I could do some testing as well. I haven't seen this on our
boards for quite a while, but I'd like to verify.

quoted

- With 2.6.31-rc2, the RFIFO error occurs quickly which does reset the
  FEC and Bestcomm (unfortunately, this does trigger an oops because
  it's called from the interrupt context, but that's another issue).

+1 for "error handling resets too much"

Yes, and furthermore it's leaking skb's :-(.

Wolfgang.