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ice: reconfig host after changing MSI-X on VF

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During VSI reconfiguration filters and VSI config which is set in
ice_vf_init_host_cfg() are lost. Recall the host configuration function
to restore them.

Without this config VF on which MSI-X amount was changed might had a
connection problems.

Fixes: 4d38cb44bd ("ice: manage VFs MSI-X using resource tracking")
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Michal Swiatkowski 2024-02-23 07:40:24 +01:00 committed by Tony Nguyen
parent 99099c6bc7
commit 4035c72dc1
1 changed files with 9 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/net/ethernet/intel/ice/ice_sriov.c
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@ -1068,6 +1068,7 @@ int ice_sriov_set_msix_vec_count(struct pci_dev *vf_dev, int msix_vec_count)
struct ice_pf *pf = pci_get_drvdata(pdev);
u16 prev_msix, prev_queues, queues;
bool needs_rebuild = false;
struct ice_vsi *vsi;
struct ice_vf *vf;
int id;
@ -1102,6 +1103,10 @@ int ice_sriov_set_msix_vec_count(struct pci_dev *vf_dev, int msix_vec_count)
if (!vf)
return -ENOENT;
vsi = ice_get_vf_vsi(vf);
if (!vsi)
return -ENOENT;
prev_msix = vf->num_msix;
prev_queues = vf->num_vf_qs;
@ -1122,7 +1127,7 @@ int ice_sriov_set_msix_vec_count(struct pci_dev *vf_dev, int msix_vec_count)
if (vf->first_vector_idx < 0)
goto unroll;
if (ice_vf_reconfig_vsi(vf)) {
if (ice_vf_reconfig_vsi(vf) || ice_vf_init_host_cfg(vf, vsi)) {
/* Try to rebuild with previous values */
needs_rebuild = true;
goto unroll;
@ -1148,8 +1153,10 @@ int ice_sriov_set_msix_vec_count(struct pci_dev *vf_dev, int msix_vec_count)
if (vf->first_vector_idx < 0)
return -EINVAL;
if (needs_rebuild)
if (needs_rebuild) {
ice_vf_reconfig_vsi(vf);
ice_vf_init_host_cfg(vf, vsi);
}
ice_ena_vf_mappings(vf);
ice_put_vf(vf);