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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>
This commit is contained in:
Emil Tantilov 2014-12-06 09:19:09 +00:00 committed by Jeff Kirsher
parent 2dc571aa61
commit 9295edb472
2 changed files with 45 additions and 0 deletions
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35
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -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);

10
drivers/net/ethernet/intel/ixgbevf/regs.h
View File

@ -69,6 +69,16 @@
#define IXGBE_VFGOTC_LSB 0x02020
#define IXGBE_VFGOTC_MSB 0x02024
#define IXGBE_VFMPRC 0x01034
#define IXGBE_VFMRQC 0x3000
#define IXGBE_VFRSSRK(x) (0x3100 + ((x) * 4))
#define IXGBE_VFRETA(x) (0x3200 + ((x) * 4))
/* VFMRQC bits */
#define IXGBE_VFMRQC_RSSEN 0x00000001 /* RSS Enable */
#define IXGBE_VFMRQC_RSS_FIELD_IPV4_TCP 0x00010000
#define IXGBE_VFMRQC_RSS_FIELD_IPV4 0x00020000
#define IXGBE_VFMRQC_RSS_FIELD_IPV6 0x00100000
#define IXGBE_VFMRQC_RSS_FIELD_IPV6_TCP 0x00200000
#define IXGBE_WRITE_FLUSH(a) (IXGBE_READ_REG(a, IXGBE_VFSTATUS))