patch 'net/intel: update key length when getting RSS key' has been queued to stable release 24.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 24.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/22/26. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/0622e46ce98268f0fec7b1393f93046fb8c36089

Thanks.

Luca Boccassi

---
>From 0622e46ce98268f0fec7b1393f93046fb8c36089 Mon Sep 17 00:00:00 2001
From: Thierry Herbelot <thierry.herbelot at 6wind.com>
Date: Fri, 16 Jan 2026 14:54:35 +0100
Subject: [PATCH] net/intel: update key length when getting RSS key

[ upstream commit 23e5d5ed70c89715d1a29ee780ade74c8aab1998 ]

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 at 6wind.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
 drivers/net/e1000/igb_rxtx.c   | 3 ++-
 drivers/net/igc/igc_ethdev.c   | 1 +
 drivers/net/ixgbe/ixgbe_rxtx.c | 3 ++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
index b63de2354f..87181b4084 100644
--- a/drivers/net/e1000/igb_rxtx.c
+++ b/drivers/net/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/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
index a5143251a2..9baf7950c9 100644
--- a/drivers/net/igc/igc_ethdev.c
+++ b/drivers/net/igc/igc_ethdev.c
@@ -2552,6 +2552,7 @@ 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] = IGC_READ_REG_LE_VALUE(hw, IGC_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/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 5184372c80..d283e2e6f2 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -3658,13 +3658,14 @@ 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 */
-- 
2.47.3

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-02-20 14:55:45.359697934 +0000
+++ 0054-net-intel-update-key-length-when-getting-RSS-key.patch	2026-02-20 14:55:43.240191685 +0000
@@ -1 +1 @@
-From 23e5d5ed70c89715d1a29ee780ade74c8aab1998 Mon Sep 17 00:00:00 2001
+From 0622e46ce98268f0fec7b1393f93046fb8c36089 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 23e5d5ed70c89715d1a29ee780ade74c8aab1998 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -17,3 +18,3 @@
- drivers/net/intel/e1000/igb_rxtx.c   | 3 ++-
- drivers/net/intel/e1000/igc_ethdev.c | 1 +
- drivers/net/intel/ixgbe/ixgbe_rxtx.c | 3 ++-
+ drivers/net/e1000/igb_rxtx.c   | 3 ++-
+ drivers/net/igc/igc_ethdev.c   | 1 +
+ drivers/net/ixgbe/ixgbe_rxtx.c | 3 ++-
@@ -22,4 +23,4 @@
-diff --git a/drivers/net/intel/e1000/igb_rxtx.c b/drivers/net/intel/e1000/igb_rxtx.c
-index cdd7a3338f..14b2858817 100644
---- a/drivers/net/intel/e1000/igb_rxtx.c
-+++ b/drivers/net/intel/e1000/igb_rxtx.c
+diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
+index b63de2354f..87181b4084 100644
+--- a/drivers/net/e1000/igb_rxtx.c
++++ b/drivers/net/e1000/igb_rxtx.c
@@ -42,5 +43,5 @@
-diff --git a/drivers/net/intel/e1000/igc_ethdev.c b/drivers/net/intel/e1000/igc_ethdev.c
-index cfcf7cad28..2155a67268 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,
+diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
+index a5143251a2..9baf7950c9 100644
+--- a/drivers/net/igc/igc_ethdev.c
++++ b/drivers/net/igc/igc_ethdev.c
+@@ -2552,6 +2552,7 @@ eth_igc_rss_hash_conf_get(struct rte_eth_dev *dev,
@@ -49 +50 @@
- 			hash_key[i] = E1000_READ_REG_LE_VALUE(hw, E1000_RSSRK(i));
+ 			hash_key[i] = IGC_READ_REG_LE_VALUE(hw, IGC_RSSRK(i));
@@ -54,5 +55,5 @@
-diff --git a/drivers/net/intel/ixgbe/ixgbe_rxtx.c b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
-index 824e328230..6633341167 100644
---- a/drivers/net/intel/ixgbe/ixgbe_rxtx.c
-+++ b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
-@@ -3751,13 +3751,14 @@ ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
+diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
+index 5184372c80..d283e2e6f2 100644
+--- a/drivers/net/ixgbe/ixgbe_rxtx.c
++++ b/drivers/net/ixgbe/ixgbe_rxtx.c
+@@ -3658,13 +3658,14 @@ ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,