i40e: Fix ethtool rx-flow-hash setting for X722

When enabling flow type for RSS hash via ethtool:

ethtool -N $pf rx-flow-hash tcp4|tcp6|udp4|udp6 s|d

the driver would fail to setup this setting on X722
device since it was using the mask on the register
dedicated for X710 devices.

Apply a different mask on the register when setting the
RSS hash for the X722 device.

When displaying the flow types enabled via ethtool:

ethtool -n $pf rx-flow-hash tcp4|tcp6|udp4|udp6

the driver would print wrong values for X722 device.

Fix this issue by testing masks for X722 device in
i40e_get_rss_hash_opts function.

Fixes: eb0dd6e4a3b3 ("i40e: Allow RSS Hash set with less than four parameters")
Signed-off-by: Slawomir Laba <slawomirx.laba@intel.com>
Signed-off-by: Michal Jaron <michalx.jaron@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20221024100526.1874914-1-jacob.e.keller@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 87f36d1..314ef40 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -3185,10 +3185,17 @@ static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
 
                if (cmd->flow_type == TCP_V4_FLOW ||
                    cmd->flow_type == UDP_V4_FLOW) {
-                       if (i_set & I40E_L3_SRC_MASK)
-                               cmd->data |= RXH_IP_SRC;
-                       if (i_set & I40E_L3_DST_MASK)
-                               cmd->data |= RXH_IP_DST;
+                       if (hw->mac.type == I40E_MAC_X722) {
+                               if (i_set & I40E_X722_L3_SRC_MASK)
+                                       cmd->data |= RXH_IP_SRC;
+                               if (i_set & I40E_X722_L3_DST_MASK)
+                                       cmd->data |= RXH_IP_DST;
+                       } else {
+                               if (i_set & I40E_L3_SRC_MASK)
+                                       cmd->data |= RXH_IP_SRC;
+                               if (i_set & I40E_L3_DST_MASK)
+                                       cmd->data |= RXH_IP_DST;
+                       }
                } else if (cmd->flow_type == TCP_V6_FLOW ||
                          cmd->flow_type == UDP_V6_FLOW) {
                        if (i_set & I40E_L3_V6_SRC_MASK)
@@ -3546,12 +3553,15 @@ static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
 
 /**
  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
+ * @hw: hw structure
  * @nfc: pointer to user request
  * @i_setc: bits currently set
  *
  * Returns value of bits to be set per user request
  **/
-static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
+static u64 i40e_get_rss_hash_bits(struct i40e_hw *hw,
+                                 struct ethtool_rxnfc *nfc,
+                                 u64 i_setc)
 {
        u64 i_set = i_setc;
        u64 src_l3 = 0, dst_l3 = 0;
@@ -3570,8 +3580,13 @@ static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
                dst_l3 = I40E_L3_V6_DST_MASK;
        } else if (nfc->flow_type == TCP_V4_FLOW ||
                  nfc->flow_type == UDP_V4_FLOW) {
-               src_l3 = I40E_L3_SRC_MASK;
-               dst_l3 = I40E_L3_DST_MASK;
+               if (hw->mac.type == I40E_MAC_X722) {
+                       src_l3 = I40E_X722_L3_SRC_MASK;
+                       dst_l3 = I40E_X722_L3_DST_MASK;
+               } else {
+                       src_l3 = I40E_L3_SRC_MASK;
+                       dst_l3 = I40E_L3_DST_MASK;
+               }
        } else {
                /* Any other flow type are not supported here */
                return i_set;
@@ -3686,7 +3701,7 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
                                               flow_pctype)) |
                        ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
                                               flow_pctype)) << 32);
-               i_set = i40e_get_rss_hash_bits(nfc, i_setc);
+               i_set = i40e_get_rss_hash_bits(&pf->hw, nfc, i_setc);
                i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
                                  (u32)i_set);
                i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),

diff --git a/drivers/net/ethernet/intel/i40e/i40e_type.h b/drivers/net/ethernet/intel/i40e/i40e_type.h
index 7b3f30b..388c3d3 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_type.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_type.h
@@ -1404,6 +1404,10 @@ struct i40e_lldp_variables {
 #define I40E_PFQF_CTL_0_HASHLUTSIZE_512        0x00010000
 
 /* INPUT SET MASK for RSS, flow director, and flexible payload */
+#define I40E_X722_L3_SRC_SHIFT         49
+#define I40E_X722_L3_SRC_MASK          (0x3ULL << I40E_X722_L3_SRC_SHIFT)
+#define I40E_X722_L3_DST_SHIFT         41
+#define I40E_X722_L3_DST_MASK          (0x3ULL << I40E_X722_L3_DST_SHIFT)
 #define I40E_L3_SRC_SHIFT              47
 #define I40E_L3_SRC_MASK               (0x3ULL << I40E_L3_SRC_SHIFT)
 #define I40E_L3_V6_SRC_SHIFT           43