From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla@dpdk.org
Subject: [Bug 21] Ixgbe driver changes FCTRL without first
 disabling RXCTRL.RXEN
Date: Sun, 01 Apr 2018 12:37:39 +0000
Message-ID: <bug-21-3@http.dpdk.org/tracker/>
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https://dpdk.org/tracker/show_bug.cgi?id=3D21

            Bug ID: 21
           Summary: Ixgbe driver changes FCTRL without first disabling
                    RXCTRL.RXEN
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: CONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: solal.pirelli@gmail.com
  Target Milestone: ---

The Intel 82599 data sheet
(https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/82=
599-10-gbe-controller-datasheet.pdf,
=C2=A78.2.3.7.1) states that "Before receive filters are updated/modified t=
he
RXCTRL.RXEN bit should be set to 0b. After the proper filters have been set=
 the
RXCTRL.RXEN bit can be set to 1b to re-enable the receiver."

However, the ixgbe driver's promiscuous and allmulticast enable/disable
functions edit the FCTRL filters without disabling (or at least checking)
RXCTRL.RXEN. (e.g.
http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/ixgbe_ethdev.c?h=3Dv18.0=
2#n4053)

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