[dpdk-stable] [DPDK 1/3] doc: fix testpmd command for i40e RSS flow

[dpdk-stable] [DPDK 1/3] doc: fix testpmd command for i40e RSS flow

[Zhang,Alvin]

From: Alvin Zhang <alvinx.zhang@intel.com>

The command here does not create a queue region, but only sets the
lookup table, so the descriptions in the doc is not exact.

Fixes: feaae285b342 ("net/i40e: support hash configuration in RSS flow")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---
 doc/guides/nics/i40e.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst
index 4e5c467..64f20e7 100644
--- a/doc/guides/nics/i40e.rst
+++ b/doc/guides/nics/i40e.rst
@@ -562,9 +562,9 @@ Generic flow API
 - ``RSS Flow``
 
   RSS Flow supports to set hash input set, hash function, enable hash
-  and configure queue region.
+  and configure queues.
   For example:
-  Configure queue region as queue 0, 1, 2, 3.
+  Configure queues as queue 0, 1, 2, 3.
 
   .. code-block:: console
 
-- 
1.8.3.1

[dpdk-stable] [DPDK 2/3] net/i40e: fix return value

[Zhang,Alvin]

From: Alvin Zhang <alvinx.zhang@intel.com>

The api should return the system error status, but it returned the
hardware error status, this is confused for the caller.
This patch adds check on hardware execution status and returns -EIO
in case of hardware execution failure.

Fixes: 1d4b2b4966bb ("net/i40e: fix VF overwrite PF RSS LUT for X722")
Fixes: d0a349409bd7 ("i40e: support AQ based RSS config")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 7f9bba4..5984e52 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -4443,7 +4443,6 @@ static int i40e_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 {
 	struct i40e_pf *pf;
 	struct i40e_hw *hw;
-	int ret;
 
 	if (!vsi || !lut)
 		return -EINVAL;
@@ -4452,12 +4451,16 @@ static int i40e_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 	hw = I40E_VSI_TO_HW(vsi);
 
 	if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
-		ret = i40e_aq_set_rss_lut(hw, vsi->vsi_id,
-					  vsi->type != I40E_VSI_SRIOV,
-					  lut, lut_size);
-		if (ret) {
-			PMD_DRV_LOG(ERR, "Failed to set RSS lookup table");
-			return ret;
+		enum i40e_status_code status;
+
+		status = i40e_aq_set_rss_lut(hw, vsi->vsi_id,
+					     vsi->type != I40E_VSI_SRIOV,
+					     lut, lut_size);
+		if (status) {
+			PMD_DRV_LOG(ERR,
+				    "Failed to update RSS lookup table, error status: %d",
+				    status);
+			return -EIO;
 		}
 	} else {
 		uint32_t *lut_dw = (uint32_t *)lut;
@@ -7612,7 +7615,6 @@ struct i40e_vsi *
 	uint16_t key_idx = (vsi->type == I40E_VSI_SRIOV) ?
 			   I40E_VFQF_HKEY_MAX_INDEX :
 			   I40E_PFQF_HKEY_MAX_INDEX;
-	int ret = 0;
 
 	if (!key || key_len == 0) {
 		PMD_DRV_LOG(DEBUG, "No key to be configured");
@@ -7625,11 +7627,16 @@ struct i40e_vsi *
 
 	if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
 		struct i40e_aqc_get_set_rss_key_data *key_dw =
-			(struct i40e_aqc_get_set_rss_key_data *)key;
+				(struct i40e_aqc_get_set_rss_key_data *)key;
+		enum i40e_status_code status =
+				i40e_aq_set_rss_key(hw, vsi->vsi_id, key_dw);
 
-		ret = i40e_aq_set_rss_key(hw, vsi->vsi_id, key_dw);
-		if (ret)
-			PMD_INIT_LOG(ERR, "Failed to configure RSS key via AQ");
+		if (status) {
+			PMD_DRV_LOG(ERR,
+				    "Failed to configure RSS key via AQ, error status: %d",
+				    status);
+			return -EIO;
+		}
 	} else {
 		uint32_t *hash_key = (uint32_t *)key;
 		uint16_t i;
@@ -7649,7 +7656,7 @@ struct i40e_vsi *
 		I40E_WRITE_FLUSH(hw);
 	}
 
-	return ret;
+	return 0;
 }
 
 static int
-- 
1.8.3.1