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i40e: fix registers dump after run ethtool adapter self test

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[ Upstream commit c5cff16f46 ]

Fix invalid registers dump from ethtool -d ethX after adapter self test
by ethtool -t ethY. It causes invalid data display.

The problem was caused by overwriting i40e_reg_list[].elements
which is common for ethtool self test and dump.

Fixes: 22dd9ae8af ("i40e: Rework register diagnostic")
Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230328172659.3906413-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Radoslaw Tyl 2023-03-28 10:26:59 -07:00 committed by Greg Kroah-Hartman
parent 735c12ea91
commit 7ae45cb486
2 changed files with 7 additions and 6 deletions
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11
drivers/net/ethernet/intel/i40e/i40e_diag.c
View file

@ -44,7 +44,7 @@ static i40e_status i40e_diag_reg_pattern_test(struct i40e_hw *hw,
return 0;
}
struct i40e_diag_reg_test_info i40e_reg_list[] = {
const struct i40e_diag_reg_test_info i40e_reg_list[] = {
/* offset mask elements stride */
{I40E_QTX_CTL(0), 0x0000FFBF, 1,
I40E_QTX_CTL(1) - I40E_QTX_CTL(0)},
@ -78,27 +78,28 @@ i40e_status i40e_diag_reg_test(struct i40e_hw *hw)
{
i40e_status ret_code = 0;
u32 reg, mask;
u32 elements;
u32 i, j;
for (i = 0; i40e_reg_list[i].offset != 0 &&
!ret_code; i++) {
elements = i40e_reg_list[i].elements;
/* set actual reg range for dynamically allocated resources */
if (i40e_reg_list[i].offset == I40E_QTX_CTL(0) &&
hw->func_caps.num_tx_qp != 0)
i40e_reg_list[i].elements = hw->func_caps.num_tx_qp;
elements = hw->func_caps.num_tx_qp;
if ((i40e_reg_list[i].offset == I40E_PFINT_ITRN(0, 0) ||
i40e_reg_list[i].offset == I40E_PFINT_ITRN(1, 0) ||
i40e_reg_list[i].offset == I40E_PFINT_ITRN(2, 0) ||
i40e_reg_list[i].offset == I40E_QINT_TQCTL(0) ||
i40e_reg_list[i].offset == I40E_QINT_RQCTL(0)) &&
hw->func_caps.num_msix_vectors != 0)
i40e_reg_list[i].elements =
hw->func_caps.num_msix_vectors - 1;
elements = hw->func_caps.num_msix_vectors - 1;
/* test register access */
mask = i40e_reg_list[i].mask;
for (j = 0; j < i40e_reg_list[i].elements && !ret_code; j++) {
for (j = 0; j < elements && !ret_code; j++) {
reg = i40e_reg_list[i].offset +
(j * i40e_reg_list[i].stride);
ret_code = i40e_diag_reg_pattern_test(hw, reg, mask);

2
drivers/net/ethernet/intel/i40e/i40e_diag.h
View file

@ -20,7 +20,7 @@ struct i40e_diag_reg_test_info {
u32 stride; /* bytes between each element */
};
extern struct i40e_diag_reg_test_info i40e_reg_list[];
extern const struct i40e_diag_reg_test_info i40e_reg_list[];
i40e_status i40e_diag_reg_test(struct i40e_hw *hw);
i40e_status i40e_diag_eeprom_test(struct i40e_hw *hw);