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ixgbe: update the rss key on h/w, when ethtool ask for it 

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@redhat.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Paolo Abeni 2016-12-15 15:20:34 +01:00 committed by Jeff Kirsher
parent 9f674e48c1
commit d3aa9c9f21
3 changed files with 20 additions and 4 deletions
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1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -929,6 +929,7 @@ 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);

4
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
View File

@ -2998,8 +2998,10 @@ 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);

19
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -3473,6 +3473,21 @@ u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter)
return 512;
}
/**
* 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
@ -3538,7 +3553,6 @@ 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;
@ -3551,8 +3565,7 @@ 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));