[Intel-wired-lan] [PATCH net] ixgbe: update the rss key on h/w, when ethtool ask for it.
Paolo Abeni
pabeni at redhat.com
Thu Dec 15 14:20:34 UTC 2016
Currently ixgbe_set_rxfh() updates the rss_key copy in the driver
memory, but does not push the new value into the h/w. This commit
add a new helper for the latter operation and call it in
ixgbe_set_rxfh(), so that the h/w rss key value can be really
updated via ethtool.
Signed-off-by: Paolo Abeni <pabeni at redhat.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe.h | 1 +
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 4 +++-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 19 ++++++++++++++++---
3 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index ef81c3d..8fb9fbf 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -1026,6 +1026,7 @@ 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_key(struct ixgbe_adapter *adapter);
void ixgbe_store_reta(struct ixgbe_adapter *adapter);
s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index fd192bf..e40f9ce 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -3003,8 +3003,10 @@ static int ixgbe_set_rxfh(struct net_device *netdev, const u32 *indir,
}
/* Fill out the rss hash key */
- if (key)
+ if (key) {
memcpy(adapter->rss_key, key, ixgbe_get_rxfh_key_size(netdev));
+ ixgbe_store_key(adapter);
+ }
ixgbe_store_reta(adapter);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 1e2f39e..0c23ab8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3411,6 +3411,21 @@ u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter)
}
/**
+ * ixgbe_store_key - Write the RSS key to HW
+ * @adapter: device handle
+ *
+ * Write the RSS key stored in adapter.rss_key to HW.
+ */
+void ixgbe_store_key(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+
+ for (i = 0; i < 10; i++)
+ IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]);
+}
+
+/**
* ixgbe_store_reta - Write the RETA table to HW
* @adapter: device handle
*
@@ -3475,7 +3490,6 @@ static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter)
static void ixgbe_setup_reta(struct ixgbe_adapter *adapter)
{
- struct ixgbe_hw *hw = &adapter->hw;
u32 i, j;
u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
@@ -3488,8 +3502,7 @@ static void ixgbe_setup_reta(struct ixgbe_adapter *adapter)
rss_i = 4;
/* Fill out hash function seeds */
- for (i = 0; i < 10; i++)
- IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]);
+ ixgbe_store_key(adapter);
/* Fill out redirection table */
memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl));
--
1.8.3.1
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