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Date:      Mon, 11 May 2020 17:42:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 241785] [vlan][lagg] creating vlan over lagg causes flapping
Message-ID:  <bug-241785-7501-FSNXHr5Fln@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-241785-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-241785-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241785

--- Comment #3 from commit-hook@freebsd.org ---
A commit references this bug:

Author: erj
Date: Mon May 11 17:42:06 UTC 2020
New revision: 360902
URL: https://svnweb.freebsd.org/changeset/base/360902

Log:
  em/ix/ixv/ixl/iavf: Implement ifdi_needs_restart iflib method

  Pursuant to r360398, implement driver-specific versions of the
  ifdi_needs_restart iflib device method.

  Some (if not most?) Intel network cards don't need reinitializing when a
  VLAN is added or removed from the device hardware, so these implement
  ifdi_needs_restart in a way that tell iflib not to bring the interface
  up or down when a VLAN is added or removed, regardless of whether the
  VLAN_HWFILTER interface capability flag is set or not.

  This could potentially solve several PRs relating to link flaps that
  occur when VLANs are added/removed to devices.

  Signed-off-by: Eric Joyner <erj@freebsd.org>

  PR:           240818, 241785
  Reviewed by:  gallatin@, olivier@
  MFC after:    3 days
  MFC with:     r360398
  Sponsored by: Intel Corporation
  Differential Revision:        https://reviews.freebsd.org/D24659

Changes:
  head/sys/dev/e1000/if_em.c
  head/sys/dev/ixgbe/if_ix.c
  head/sys/dev/ixgbe/if_ixv.c
  head/sys/dev/ixl/if_iavf.c
  head/sys/dev/ixl/if_ixl.c

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