i40e ndo_get_vf_config poll for out of vf reset
It can take up to 200 mS for a vf to come out of reset. Poll for it being ready rather than just abandoning the request. Change-Id: I76a93029e155fada3ef8f652a562552031c06a41 Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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@ -25,6 +25,7 @@ Source11: modules-load.conf
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Patch01: i40e-Enable-getting-link-status-from-VF.patch
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Patch01: i40e-Enable-getting-link-status-from-VF.patch
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Patch02: i40e-add-more-debug-info-for-VFs-still-in-reset.patch
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Patch02: i40e-add-more-debug-info-for-VFs-still-in-reset.patch
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Patch03: ndo_get_vf_config-poll-for-out-of-vf-reset.patch
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%define kversion %(rpm -q kernel%{?bt_ext}-devel | sort --version-sort | tail -1 | sed 's/kernel%{?bt_ext}-devel-//')
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%define kversion %(rpm -q kernel%{?bt_ext}-devel | sort --version-sort | tail -1 | sed 's/kernel%{?bt_ext}-devel-//')
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@ -0,0 +1,47 @@
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From 3147c6198571464749af94f0fbf6986a932ed8c7 Mon Sep 17 00:00:00 2001
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Message-Id: <3147c6198571464749af94f0fbf6986a932ed8c7.1522697994.git.Jim.Somerville@windriver.com>
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From: Jim Somerville <Jim.Somerville@windriver.com>
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Date: Mon, 2 Apr 2018 15:35:12 -0400
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Subject: [PATCH 1/1] ndo_get_vf_config poll for out of vf reset
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Same solution as 028daf80117376b22909becd9720daaefdfceff4 from the
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net-next tree as supplied by Intel, but we apply it to
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ndo_get_vf_config instead.
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Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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---
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src/i40e_virtchnl_pf.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/src/i40e_virtchnl_pf.c b/src/i40e_virtchnl_pf.c
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index 83f6f88..6f749b6 100644
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--- a/src/i40e_virtchnl_pf.c
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+++ b/src/i40e_virtchnl_pf.c
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@@ -3358,6 +3358,7 @@ int i40e_ndo_get_vf_config(struct net_device *netdev,
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struct i40e_pf *pf = vsi->back;
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struct i40e_vf *vf;
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int ret = 0;
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+ u8 i;
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/* validate the request */
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if (vf_id >= pf->num_alloc_vfs) {
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@@ -3369,6 +3370,16 @@ int i40e_ndo_get_vf_config(struct net_device *netdev,
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vf = &(pf->vf[vf_id]);
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/* first vsi is always the LAN vsi */
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vsi = pf->vsi[vf->lan_vsi_idx];
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+
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+ /* When the VF is resetting wait until it is done.
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+ * It can take up to 200 milliseconds,
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+ * but wait for up to 300 milliseconds to be safe.
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+ */
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+ for (i = 0; i < 15; i++) {
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+ if (test_bit(I40E_VF_STATE_INIT, &vf->vf_states))
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+ break;
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+ msleep(20);
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+ }
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if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states)) {
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dev_err(&pf->pdev->dev, "%s: VF %d still in reset. Try again.\n",
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__func__, vf_id);
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--
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1.8.3.1
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