[V2] net/intel: update key_len when getting RSS key

[Thierry Herbelot <thierry.herbelot@6wind.com>]

When adding the i40e PMD, the rss_hash_conf_get function was changed
to update the RSS key len.
The corresponding functions for ixgbe & e1000 were not updated to
follow the new convention.

Fixes: 8a387fa85f02 ("ethdev: more RSS flags")
Signed-off-by: Thierry Herbelot <thierry.herbelot@6wind.com>
---
V2: For igb & ixgbe, a hard-coded integer is replaced a symbolic constant.
---
 drivers/net/intel/e1000/igb_rxtx.c   | 3 ++-
 drivers/net/intel/e1000/igc_ethdev.c | 1 +
 drivers/net/intel/ixgbe/ixgbe_rxtx.c | 3 ++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/intel/e1000/igb_rxtx.c b/drivers/net/intel/e1000/igb_rxtx.c
index cdd7a3338f61..14b28588174f 100644
--- a/drivers/net/intel/e1000/igb_rxtx.c
+++ b/drivers/net/intel/e1000/igb_rxtx.c
@@ -2035,13 +2035,14 @@ int eth_igb_rss_hash_conf_get(struct rte_eth_dev *dev,
 	hash_key = rss_conf->rss_key;
 	if (hash_key != NULL) {
 		/* Return RSS hash key */
-		for (i = 0; i < 10; i++) {
+		for (i = 0; i < IGB_HKEY_MAX_INDEX; i++) {
 			rss_key = E1000_READ_REG_ARRAY(hw, E1000_RSSRK(0), i);
 			hash_key[(i * 4)] = rss_key & 0x000000FF;
 			hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
 			hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
 			hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
 		}
+		rss_conf->rss_key_len = IGB_HKEY_MAX_INDEX * sizeof(uint32_t);
 	}
 
 	/* Get RSS functions configured in MRQC register */
diff --git a/drivers/net/intel/e1000/igc_ethdev.c b/drivers/net/intel/e1000/igc_ethdev.c
index b9c91d2446c0..9f6ada3bc6cd 100644
--- a/drivers/net/intel/e1000/igc_ethdev.c
+++ b/drivers/net/intel/e1000/igc_ethdev.c
@@ -2559,6 +2559,7 @@ eth_igc_rss_hash_conf_get(struct rte_eth_dev *dev,
 		/* read RSS key from register */
 		for (i = 0; i < IGC_HKEY_MAX_INDEX; i++)
 			hash_key[i] = E1000_READ_REG_LE_VALUE(hw, E1000_RSSRK(i));
+		rss_conf->rss_key_len = IGC_HKEY_MAX_INDEX * sizeof(uint32_t);
 	}
 
 	/* get RSS functions configured in MRQC register */
diff --git a/drivers/net/intel/ixgbe/ixgbe_rxtx.c b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
index a7583c178a14..e830bb9495b8 100644
--- a/drivers/net/intel/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
@@ -3749,13 +3749,14 @@ ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 	hash_key = rss_conf->rss_key;
 	if (hash_key != NULL) {
 		/* Return RSS hash key */
-		for (i = 0; i < 10; i++) {
+		for (i = 0; i < IXGBE_HKEY_MAX_INDEX; i++) {
 			rss_key = IXGBE_READ_REG_ARRAY(hw, rssrk_reg, i);
 			hash_key[(i * 4)] = rss_key & 0x000000FF;
 			hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
 			hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
 			hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
 		}
+		rss_conf->rss_key_len = IXGBE_HKEY_MAX_INDEX * sizeof(uint32_t);
 	}
 
 	if (!ixgbe_rss_enabled(hw)) { /* RSS is disabled */
-- 
2.39.2