[PATCH AUTOSEL 5.4 041/108] ice: Fix implicit queue mapping mode in ice_vsi_get_qs

Sasha Levin
2020-04-11T23:30:43Z

From: Brett Creeley <brett.creeley@intel.com>

[ Upstream commit 39066dc549cf8a688f6e105a4e9f2a8abefbcebe ]

Currently in ice_vsi_get_qs() we set the mapping_mode for Tx and Rx to
vsi->[tx|rx]_mapping_mode, but the problem is vsi->[tx|rx]_mapping_mode
have not been set yet. This was working because ICE_VSI_MAP_CONTIG is
defined to 0. Fix this by being explicit with our mapping mode by
initializing the Tx and Rx structure's mapping_mode to
ICE_VSI_MAP_CONTIG and then setting the vsi->[tx|rx]_mapping_mode to the
[tx|rx]_qs_cfg.mapping_mode values.

Also, only assign the vsi->[tx|rx]_mapping_mode when the queues are
successfully mapped to the VSI. With this change there was no longer a
need to initialize the ret variable to 0 so remove that.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice_lib.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index cc755382df256..4d995355e0f96 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -704,7 +704,7 @@ static int ice_vsi_get_qs(struct ice_vsi *vsi)
.scatter_count = ICE_MAX_SCATTER_TXQS,
.vsi_map = vsi->txq_map,
.vsi_map_offset = 0,
- .mapping_mode = vsi->tx_mapping_mode
+ .mapping_mode = ICE_VSI_MAP_CONTIG
};
struct ice_qs_cfg rx_qs_cfg = {
.qs_mutex = &pf->avail_q_mutex,
@@ -714,18 +714,21 @@ static int ice_vsi_get_qs(struct ice_vsi *vsi)
.scatter_count = ICE_MAX_SCATTER_RXQS,
.vsi_map = vsi->rxq_map,
.vsi_map_offset = 0,
- .mapping_mode = vsi->rx_mapping_mode
+ .mapping_mode = ICE_VSI_MAP_CONTIG
};
- int ret = 0;
-
- vsi->tx_mapping_mode = ICE_VSI_MAP_CONTIG;
- vsi->rx_mapping_mode = ICE_VSI_MAP_CONTIG;
+ int ret;

ret = __ice_vsi_get_qs(&tx_qs_cfg);
- if (!ret)
- ret = __ice_vsi_get_qs(&rx_qs_cfg);
+ if (ret)
+ return ret;
+ vsi->tx_mapping_mode = tx_qs_cfg.mapping_mode;

- return ret;
+ ret = __ice_vsi_get_qs(&rx_qs_cfg);
+ if (ret)
+ return ret;
+ vsi->rx_mapping_mode = rx_qs_cfg.mapping_mode;
+
+ return 0;
}

/**
--
2.20.1