diff options
author | Emil Tantilov <emil.s.tantilov@intel.com> | 2014-12-06 09:19:09 +0000 |
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committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-02-05 19:57:47 -0800 |
commit | 9295edb472dcd85cb27d2f23dc2e6bae054a0228 (patch) | |
tree | bb0a61aa7371dbdf4f2981f488c4515746fc0826 /drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | |
parent | 2dc571aa61d3fe5b20167f16e0390e749cd4bb97 (diff) | |
download | linux-9295edb472dcd85cb27d2f23dc2e6bae054a0228.tar.bz2 |
ixgbevf: add RSS support for X550
X550 provides RSS registers for configuring RSS per VF.
This patch introduces ixgbevf_setup_vfmrqc() which uses the VFRETA,
VFRSSRK and VFMRQC registers to configure RSS on X550.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 92154ee87b42..a5735263b1de 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -1584,6 +1584,39 @@ static void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, reg_idx); } +static void ixgbevf_setup_vfmrqc(struct ixgbevf_adapter *adapter) +{ + struct ixgbe_hw *hw = &adapter->hw; + u32 vfmrqc = 0, vfreta = 0; + u32 rss_key[10]; + u16 rss_i = adapter->num_rx_queues; + int i, j; + + /* Fill out hash function seeds */ + netdev_rss_key_fill(rss_key, sizeof(rss_key)); + for (i = 0; i < 10; i++) + IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), rss_key[i]); + + /* Fill out redirection table */ + for (i = 0, j = 0; i < 64; i++, j++) { + if (j == rss_i) + j = 0; + vfreta = (vfreta << 8) | (j * 0x1); + if ((i & 3) == 3) + IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), vfreta); + } + + /* Perform hash on these packet types */ + vfmrqc |= IXGBE_VFMRQC_RSS_FIELD_IPV4 | + IXGBE_VFMRQC_RSS_FIELD_IPV4_TCP | + IXGBE_VFMRQC_RSS_FIELD_IPV6 | + IXGBE_VFMRQC_RSS_FIELD_IPV6_TCP; + + vfmrqc |= IXGBE_VFMRQC_RSSEN; + + IXGBE_WRITE_REG(hw, IXGBE_VFMRQC, vfmrqc); +} + static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter *adapter, struct ixgbevf_ring *ring) { @@ -1640,6 +1673,8 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter) struct net_device *netdev = adapter->netdev; ixgbevf_setup_psrtype(adapter); + if (hw->mac.type >= ixgbe_mac_X550_vf) + ixgbevf_setup_vfmrqc(adapter); /* notify the PF of our intent to use this size of frame */ ixgbevf_rlpml_set_vf(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN); |