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ixgbe: Limit reporting of redirection table if SR-IOV is enabled 

The hardware redirection table can support more queues then the PF
currently has when SR-IOV is enabled.  In order to account for this use the
RSS mask to trim of the bits that are not used.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2016-09-07 20:28:17 -07:00 committed by Jeff Kirsher
parent 3b00da03ae
commit fa81da7e5b
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
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@ -2947,9 +2947,13 @@ static u32 ixgbe_rss_indir_size(struct net_device *netdev)
static void ixgbe_get_reta(struct ixgbe_adapter *adapter, u32 *indir) static void ixgbe_get_reta(struct ixgbe_adapter *adapter, u32 *indir)
{ {
int i, reta_size = ixgbe_rss_indir_tbl_entries(adapter); int i, reta_size = ixgbe_rss_indir_tbl_entries(adapter);
u16 rss_m = adapter->ring_feature[RING_F_RSS].mask;
if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
rss_m = adapter->ring_feature[RING_F_RSS].indices - 1;
for (i = 0; i < reta_size; i++) for (i = 0; i < reta_size; i++)
indir[i] = adapter->rss_indir_tbl[i]; indir[i] = adapter->rss_indir_tbl[i] & rss_m;
} }
static int ixgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, static int ixgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,