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ixgbe: support for ethtool set_rxfh

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Allows to change the rxfh indirection table and/or key using
ethtool interface.

Signed-off-by: Tom Barbette <tom.barbette@ulg.ac.be>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Tom Barbette 2015-06-26 15:40:18 +02:00 committed by Jeff Kirsher
parent ae8140aa6b
commit 1c7cf0784e
3 changed files with 49 additions and 1 deletions
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1
drivers/net/ethernet/intel/ixgbe/ixgbe.h
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@ -973,4 +973,5 @@ 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_ */

47
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
View File

@ -2868,6 +2868,14 @@ static int ixgbe_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
return ret;
}
static int ixgbe_rss_indir_tbl_max(struct ixgbe_adapter *adapter)
{
if (adapter->hw.mac.type < ixgbe_mac_X550)
return 16;
else
return 64;
}
static u32 ixgbe_get_rxfh_key_size(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
@ -2907,6 +2915,44 @@ 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);
int i;
u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
if (hfunc)
return -EINVAL;
/* Fill out the redirection table */
if (indir) {
int max_queues = min_t(int, adapter->num_rx_queues,
ixgbe_rss_indir_tbl_max(adapter));
/*Allow at least 2 queues w/ SR-IOV.*/
if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
(max_queues < 2))
max_queues = 2;
/* Verify user input. */
for (i = 0; i < reta_entries; i++)
if (indir[i] >= max_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)
{
@ -3159,6 +3205,7 @@ 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,

2
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -3313,7 +3313,7 @@ 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;