65 lines
2.6 KiB
Diff
65 lines
2.6 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Martyna Szapar <martyna.szapar@intel.com>
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Date: Tue, 7 Aug 2018 17:11:23 -0700
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Subject: [PATCH] i40e: Fix for Tx timeouts when interface is brought up if DCB
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is enabled
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If interface is connected to switch port configured for DCB there are
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TX timeouts when bringing up interface. Problem started appearing after
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adding in i40e driver code mqprio hardware offload mode. In function
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i40e_vsi_configure_bw_alloc was added resetting BW rate which should
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be executing when mqprio qdisc is removed but was also when there was
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no mqprio qdisc added and DCB was enabled. In this patch was added
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additional check for DCB flag so now when DCB is enabled the correct
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DCB configs from before mqprio patch are restored.
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Signed-off-by: Martyna Szapar <martyna.szapar@intel.com>
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Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
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Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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---
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drivers/net/ethernet/intel/i40e/i40e_main.c | 15 ++++++++-------
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1 file changed, 8 insertions(+), 7 deletions(-)
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diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
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index 08f7bd9001bc..7895a0af37e6 100644
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--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
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+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
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@@ -5219,15 +5219,17 @@ static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
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u8 *bw_share)
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{
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struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
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+ struct i40e_pf *pf = vsi->back;
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i40e_status ret;
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int i;
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- if (vsi->back->flags & I40E_FLAG_TC_MQPRIO)
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+ /* There is no need to reset BW when mqprio mode is on. */
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+ if (pf->flags & I40E_FLAG_TC_MQPRIO)
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return 0;
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- if (!vsi->mqprio_qopt.qopt.hw) {
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+ if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
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ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
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if (ret)
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- dev_info(&vsi->back->pdev->dev,
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+ dev_info(&pf->pdev->dev,
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"Failed to reset tx rate for vsi->seid %u\n",
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vsi->seid);
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return ret;
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@@ -5236,12 +5238,11 @@ static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
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for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
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bw_data.tc_bw_credits[i] = bw_share[i];
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- ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
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- NULL);
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+ ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
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if (ret) {
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- dev_info(&vsi->back->pdev->dev,
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+ dev_info(&pf->pdev->dev,
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"AQ command Config VSI BW allocation per TC failed = %d\n",
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- vsi->back->hw.aq.asq_last_status);
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+ pf->hw.aq.asq_last_status);
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return -EINVAL;
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}
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