[src/trunk]: src/sys/dev/pci/ixgbe Wait longer for link after fiber MAC setup.

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b913cc142436
branches:  trunk
changeset: 1027640:b913cc142436
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Tue Dec 14 05:35:46 2021 +0000

description:
Wait longer for link after fiber MAC setup.

  - FreeBSD:
        aaa3af802f90d93fdffb99100fe56f0bc3dda119
        96ef6eb3ae9d622906fb838c82ede3074f864cdc

    DPDK:
        64f1c8539c8ce99214b9eb1fb728a2c6745f3300
        73247f1ced303c16987bb366d38a2d8a0fc40db4

    After setting up the link on a fiber port, the maximum wait time for
    the link to come up is 500 ms in ixgbe_setup_mac_link_multispeed_fiber().
    On an x550 SFP+ port, this is often not sufficiently long for the link
    to come up. This can result in never being able to retrieve accurate
    link status for the port using rte_eth_link_get_nowait().

    Increase the maximum wait time in ixgbe_setup_mac_link_multispeed_fiber()
    to 1 s.

diffstat:

 sys/dev/pci/ixgbe/ixgbe_common.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r 20d45c60fa29 -r b913cc142436 sys/dev/pci/ixgbe/ixgbe_common.c
--- a/sys/dev/pci/ixgbe/ixgbe_common.c  Tue Dec 14 05:33:08 2021 +0000
+++ b/sys/dev/pci/ixgbe/ixgbe_common.c  Tue Dec 14 05:35:46 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ixgbe_common.c,v 1.40 2021/12/14 05:33:08 msaitoh Exp $ */
+/* $NetBSD: ixgbe_common.c,v 1.41 2021/12/14 05:35:46 msaitoh Exp $ */
 
 /******************************************************************************
   SPDX-License-Identifier: BSD-3-Clause
@@ -36,7 +36,7 @@
 /*$FreeBSD: head/sys/dev/ixgbe/ixgbe_common.c 331224 2018-03-19 20:55:05Z erj $*/
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ixgbe_common.c,v 1.40 2021/12/14 05:33:08 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ixgbe_common.c,v 1.41 2021/12/14 05:35:46 msaitoh Exp $");
 
 #include "ixgbe_common.h"
 #include "ixgbe_phy.h"
@@ -5433,10 +5433,10 @@
                ixgbe_flap_tx_laser(hw);
 
                /* Wait for the controller to acquire link.  Per IEEE 802.3ap,
-                * Section 73.10.2, we may have to wait up to 500ms if KR is
+                * Section 73.10.2, we may have to wait up to 1000ms if KR is
                 * attempted.  82599 uses the same timing for 10g SFI.
                 */
-               for (i = 0; i < 5; i++) {
+               for (i = 0; i < 10; i++) {
                        /* Wait for the link partner to also set speed */
                        msec_delay(100);