From: Michal Jaron michalx.jaron@intel.com
[ Upstream commit 82e0572b23029b380464fa9fdc125db9c1506d0a ]
During tx rings configuration default XPS queue config is set and __I40E_TX_XPS_INIT_DONE is locked. __I40E_TX_XPS_INIT_DONE state is cleared and set again with default mapping only during queues build, it means after first setup or reset with queues rebuild. (i.e. ethtool -L <interface> combined <number>) After other resets (i.e. ethtool -t <interface>) XPS_INIT_DONE is not cleared and those default maps cannot be set again. It results in cleared xps_cpus mapping until queues are not rebuild or mapping is not set by user.
Add clearing __I40E_TX_XPS_INIT_DONE state during reset to let the driver set xps_cpus to defaults again after it was cleared.
Fixes: 6f853d4f8e93 ("i40e: allow XPS with QoS enabled") Signed-off-by: Michal Jaron michalx.jaron@intel.com Signed-off-by: Kamil Maziarz kamil.maziarz@intel.com Tested-by: Gurucharan gurucharanx.g@intel.com (A Contingent worker at Intel) Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/i40e/i40e_main.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 19b5c5677584..ed2c961902b6 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -10519,6 +10519,21 @@ static int i40e_rebuild_channels(struct i40e_vsi *vsi) return 0; }
+/** + * i40e_clean_xps_state - clean xps state for every tx_ring + * @vsi: ptr to the VSI + **/ +static void i40e_clean_xps_state(struct i40e_vsi *vsi) +{ + int i; + + if (vsi->tx_rings) + for (i = 0; i < vsi->num_queue_pairs; i++) + if (vsi->tx_rings[i]) + clear_bit(__I40E_TX_XPS_INIT_DONE, + vsi->tx_rings[i]->state); +} + /** * i40e_prep_for_reset - prep for the core to reset * @pf: board private structure @@ -10543,8 +10558,10 @@ static void i40e_prep_for_reset(struct i40e_pf *pf) i40e_pf_quiesce_all_vsi(pf);
for (v = 0; v < pf->num_alloc_vsi; v++) { - if (pf->vsi[v]) + if (pf->vsi[v]) { + i40e_clean_xps_state(pf->vsi[v]); pf->vsi[v]->seid = 0; + } }
i40e_shutdown_adminq(&pf->hw);