git: 20b823a59bc7 - main - ixgbe.4: Add flow director CAVEAT

The branch main has been updated by kbowling:

URL: https://cgit.FreeBSD.org/src/commit/?id=20b823a59bc7419a6f93ec5097bd5ee524c20981

commit 20b823a59bc7419a6f93ec5097bd5ee524c20981
Author:     Diego Casati <diego.casati@gmail.com>
AuthorDate: 2024-10-26 20:34:16 +0000
Commit:     Kevin Bowling <kbowling@FreeBSD.org>
CommitDate: 2024-10-26 20:37:06 +0000

    ixgbe.4: Add flow director CAVEAT
    
    Flow-director support is not fully implemented and will cause
    errors if enabled. Mention this in the ixgbe(4) manual.
    
    PR:             202663
    MFC after:      3 days
    Co-authored-by: Alexander Ziaee <concussious@runbox.com>
    Pull Request:   https://github.com/freebsd/freebsd-src/pull/1493
---
 share/man/man4/ixgbe.4 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/share/man/man4/ixgbe.4 b/share/man/man4/ixgbe.4
index b151d3466392..ccdf50cf9674 100644
--- a/share/man/man4/ixgbe.4
+++ b/share/man/man4/ixgbe.4
@@ -124,3 +124,11 @@ The
 .Nm
 driver was written by
 .An Intel Corporation Aq Mt freebsd@intel.com .
+.Sh CAVEATS
+Intel (R) Flow director support is not fully implemented in
+.Fx
+at this time and additional work is required
+before those features can be supported.
+.Pp
+Enabling flow director may route traffic to the wrong RX queue of the NIC,
+resulting in sub-optimal performance on the receive side.