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path: root/drivers/net/ethernet/intel/i40e/i40e_main.c
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Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_main.c')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_main.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index beb854208047..b78c06a1f82c 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -8156,6 +8156,15 @@ static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
{
if (pf->flags & I40E_FLAG_FD_ATR_AUTO_DISABLED) {
+ /* ATR uses the same filtering logic as SB rules. It only
+ * functions properly if the input set mask is at the default
+ * settings. It is safe to restore the default input set
+ * because there are no active TCPv4 filter rules.
+ */
+ i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
+ I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
+ I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
+
pf->flags &= ~I40E_FLAG_FD_ATR_AUTO_DISABLED;
if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
(I40E_DEBUG_FD & pf->hw.debug_mask))