Allows to change the rxfh key and/or indiriection table using ethtool interface
Signed-off-by: Tom Barbette <tom.barbe...@ulg.ac.be>
---
drivers/net/ethernet/intel/ixgbe/ixgbe.h | 1 +
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 40 ++++++++++++++++++++++++
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
3 files changed, 42 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index ac3ac2a..4314799 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -967,4 +967,5 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
struct ixgbe_adapter *adapter,
struct ixgbe_ring *tx_ring);
u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter);
+void ixgbe_store_reta(struct ixgbe_adapter *adapter);
#endif /* _IXGBE_H_ */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index ec7b232..1d373b9 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -2907,6 +2907,45 @@ static int ixgbe_get_rxfh(struct net_device
*netdev, u32 *indir, u8 *key,
return 0;
}
+static int ixgbe_set_rxfh(struct net_device *netdev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
+ int i;
+ u32 num_queues;
+
+ num_queues = adapter->num_rx_queues;
+
+ /*
+ * Allow at least 2 queues w/ SR-IOV.
+ */
+ if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (num_queues < 2))
+ num_queues = 2;
+
+ if (hfunc)
+ return -EINVAL;
+
+ /* Fill out the redirection table */
+ if (indir) {
+ /* Verify user input. */
+ for (i = 0; i < reta_entries; i++)
+ if (indir[i] >= num_queues)
+ return -EINVAL;
+
+ for (i = 0; i < reta_entries; i++)
+ adapter->rss_indir_tbl[i] = indir[i];
+ }
+
+ /* Fill out the rss hash key */
+ if (key)
+ memcpy(adapter->rss_key, key, ixgbe_get_rxfh_key_size(netdev));
+
+ ixgbe_store_reta(adapter);
+
+ return 0;
+}
+
static int ixgbe_get_ts_info(struct net_device *dev,
struct ethtool_ts_info *info)
{
@@ -3167,6 +3206,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops = {
.get_rxfh_indir_size = ixgbe_rss_indir_size,
.get_rxfh_key_size = ixgbe_get_rxfh_key_size,
.get_rxfh = ixgbe_get_rxfh,
+ .set_rxfh = ixgbe_set_rxfh,
.get_channels = ixgbe_get_channels,
.set_channels = ixgbe_set_channels,
.get_ts_info = ixgbe_get_ts_info,
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 9aa6104..0fdeb76 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3287,7 +3287,7 @@ u32 ixgbe_rss_indir_tbl_entries(struct
ixgbe_adapter *adapter)
*
* Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
*/
-static void ixgbe_store_reta(struct ixgbe_adapter *adapter)
+void ixgbe_store_reta(struct ixgbe_adapter *adapter)
{
u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
struct ixgbe_hw *hw = &adapter->hw;
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