Intel ixgbe ignored adding FDIR ATR filters messages are appearing in RHEL 6.3

Solution In Progress - Updated -

Environment

  • Red Hat Enterprise Linux 6.3
    • kernel-2.6.32-279.el5
  • Intel NIC with ixgbe driver

Issue

  • We started seeing the following messages in our logs:
kernel: ixgbe 0000:42:00.0: p4p1: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:03:00.1: p3p2: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:42:00.1: p4p2: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:03:00.0: p3p1: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters

Resolution

The message means that the hardware was not able to initialize the Flow Director for some of the flows.

It can occur in a stress test and should not lead to any issues.

Root Cause

Intel Flow Director is described further at:

Diagnostic Steps

Check dmesg or /var/logs/messages for the following messages:

kernel: ixgbe 0000:42:00.0: p4p1: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:03:00.1: p3p2: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:42:00.1: p4p2: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters
kernel: ixgbe 0000:03:00.0: p3p1: failed to finish FDIR re-initialization, ignored adding FDIR ATR filters

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