[PATCH v7 02/12] net/ice: support for RSS HASH configure in DCF mode

[Kevin Liu <kevinx.liu@intel.com>]

From: Steve Yang <stevex.yang@intel.com>

RSS HASH should be updated and queried by application,
Add related ops ('.rss_hash_update', '.rss_hash_conf_get') for DCF.

Because DCF doesn't support configure RSS HASH, only HASH key can be
updated within ops '.rss_hash_update'.

Signed-off-by: Steve Yang <stevex.yang@intel.com>
Signed-off-by: Kevin Liu <kevinx.liu@intel.com>
---
 doc/guides/nics/features/ice_dcf.ini   |  1 +
 doc/guides/rel_notes/release_22_07.rst |  1 +
 drivers/net/ice/ice_dcf.c              |  2 +-
 drivers/net/ice/ice_dcf.h              |  1 +
 drivers/net/ice/ice_dcf_ethdev.c       | 51 ++++++++++++++++++++++++++
 5 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/features/ice_dcf.ini b/doc/guides/nics/features/ice_dcf.ini
index 5221c99a9c..d9c1b25407 100644
--- a/doc/guides/nics/features/ice_dcf.ini
+++ b/doc/guides/nics/features/ice_dcf.ini
@@ -16,6 +16,7 @@ L4 checksum offload  = P
 Inner L3 checksum    = P
 Inner L4 checksum    = P
 RSS reta update      = Y
+RSS key update       = Y
 Basic stats          = Y
 Linux                = Y
 x86-32               = Y
diff --git a/doc/guides/rel_notes/release_22_07.rst b/doc/guides/rel_notes/release_22_07.rst
index 1f07d3e1b3..866af8c0b3 100644
--- a/doc/guides/rel_notes/release_22_07.rst
+++ b/doc/guides/rel_notes/release_22_07.rst
@@ -63,6 +63,7 @@ New Features
 * **Updated Intel ice driver.**
 
  * Added support for RSS RETA configure in DCF mode.
+ * Added support for RSS HASH configure in DCF mode.
 
 Removed Items
 -------------
diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c
index 070d1b71ac..89c0203ba3 100644
--- a/drivers/net/ice/ice_dcf.c
+++ b/drivers/net/ice/ice_dcf.c
@@ -758,7 +758,7 @@ ice_dcf_uninit_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw)
 	hw->ets_config = NULL;
 }
 
-static int
+int
 ice_dcf_configure_rss_key(struct ice_dcf_hw *hw)
 {
 	struct virtchnl_rss_key *rss_key;
diff --git a/drivers/net/ice/ice_dcf.h b/drivers/net/ice/ice_dcf.h
index b2c6aa2684..f0b45af5ae 100644
--- a/drivers/net/ice/ice_dcf.h
+++ b/drivers/net/ice/ice_dcf.h
@@ -122,6 +122,7 @@ int ice_dcf_send_aq_cmd(void *dcf_hw, struct ice_aq_desc *desc,
 int ice_dcf_handle_vsi_update_event(struct ice_dcf_hw *hw);
 int ice_dcf_init_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw);
 void ice_dcf_uninit_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw);
+int ice_dcf_configure_rss_key(struct ice_dcf_hw *hw);
 int ice_dcf_configure_rss_lut(struct ice_dcf_hw *hw);
 int ice_dcf_init_rss(struct ice_dcf_hw *hw);
 int ice_dcf_configure_queues(struct ice_dcf_hw *hw);
diff --git a/drivers/net/ice/ice_dcf_ethdev.c b/drivers/net/ice/ice_dcf_ethdev.c
index 1ac66ed990..ccad7fc304 100644
--- a/drivers/net/ice/ice_dcf_ethdev.c
+++ b/drivers/net/ice/ice_dcf_ethdev.c
@@ -836,6 +836,55 @@ ice_dcf_dev_rss_reta_query(struct rte_eth_dev *dev,
 	return 0;
 }
 
+static int
+ice_dcf_dev_rss_hash_update(struct rte_eth_dev *dev,
+			struct rte_eth_rss_conf *rss_conf)
+{
+	struct ice_dcf_adapter *adapter = dev->data->dev_private;
+	struct ice_dcf_hw *hw = &adapter->real_hw;
+
+	if (!(hw->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF))
+		return -ENOTSUP;
+
+	/* HENA setting, it is enabled by default, no change */
+	if (!rss_conf->rss_key || rss_conf->rss_key_len == 0) {
+		PMD_DRV_LOG(DEBUG, "No key to be configured");
+		return 0;
+	} else if (rss_conf->rss_key_len != hw->vf_res->rss_key_size) {
+		PMD_DRV_LOG(ERR, "The size of hash key configured "
+			"(%d) doesn't match the size of hardware can "
+			"support (%d)", rss_conf->rss_key_len,
+			hw->vf_res->rss_key_size);
+		return -EINVAL;
+	}
+
+	rte_memcpy(hw->rss_key, rss_conf->rss_key, rss_conf->rss_key_len);
+
+	return ice_dcf_configure_rss_key(hw);
+}
+
+static int
+ice_dcf_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
+			  struct rte_eth_rss_conf *rss_conf)
+{
+	struct ice_dcf_adapter *adapter = dev->data->dev_private;
+	struct ice_dcf_hw *hw = &adapter->real_hw;
+
+	if (!(hw->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF))
+		return -ENOTSUP;
+
+	/* Just set it to default value now. */
+	rss_conf->rss_hf = ICE_RSS_OFFLOAD_ALL;
+
+	if (!rss_conf->rss_key)
+		return 0;
+
+	rss_conf->rss_key_len = hw->vf_res->rss_key_size;
+	rte_memcpy(rss_conf->rss_key, hw->rss_key, rss_conf->rss_key_len);
+
+	return 0;
+}
+
 #define ICE_DCF_32_BIT_WIDTH (CHAR_BIT * 4)
 #define ICE_DCF_48_BIT_WIDTH (CHAR_BIT * 6)
 #define ICE_DCF_48_BIT_MASK  RTE_LEN2MASK(ICE_DCF_48_BIT_WIDTH, uint64_t)
@@ -1184,6 +1233,8 @@ static const struct eth_dev_ops ice_dcf_eth_dev_ops = {
 	.tm_ops_get              = ice_dcf_tm_ops_get,
 	.reta_update             = ice_dcf_dev_rss_reta_update,
 	.reta_query              = ice_dcf_dev_rss_reta_query,
+	.rss_hash_update         = ice_dcf_dev_rss_hash_update,
+	.rss_hash_conf_get       = ice_dcf_dev_rss_hash_conf_get,
 };
 
 static int
-- 
2.33.1