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i40e: Fix not setting default xps_cpus after reset

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[ 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: 6f853d4f8e ("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>
This commit is contained in:
Michal Jaron 2022-10-24 10:19:42 +02:00 committed by Greg Kroah-Hartman
parent eec1fc21ed
commit a1e295517b
1 changed files with 18 additions and 1 deletions
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19
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -9953,6 +9953,21 @@ 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
@ -9984,9 +9999,11 @@ static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
rtnl_unlock();
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);