@@ -105,6 +105,8 @@ enum ixgbe_pfvf_api_rev {
#define IXGBE_VF_RETA_SZ 1 /* Number of RETA DWs to bring */
#define IXGBE_VF_RETA_OFFSET 2 /* Offset in RETA */
+#define IXGBE_VF_GET_RSS_KEY 0x0b /* get RSS key */
+
/* length of permanent address message returned from PF */
#define IXGBE_VF_PERMADDR_MSG_LEN 4
/* word in permanent address message with the current multicast type */
@@ -1016,6 +1016,30 @@ static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
return 0;
}
+static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
+ u32 *msgbuf, u32 vf)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+ u32 *rss_key = &msgbuf[1];
+
+ /* verify the PF is supporting the correct API */
+ if (!adapter->vfinfo[vf].rss_query_enabled ||
+ (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12))
+ return -EPERM;
+
+ /* Read the RSS KEY */
+ if (hw->mac.type >= ixgbe_mac_X550) {
+ for (i = 0; i < 10; i++)
+ rss_key[i] = IXGBE_READ_REG(hw,
+ IXGBE_PFVFRSSRK(i, vf));
+ } else
+ for (i = 0; i < 10; i++)
+ rss_key[i] = IXGBE_READ_REG(hw, IXGBE_RSSRK(i));
+
+ return 0;
+}
+
static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
{
u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
@@ -1075,6 +1099,9 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
case IXGBE_VF_GET_RETA:
retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
break;
+ case IXGBE_VF_GET_RSS_KEY:
+ retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
+ break;
default:
e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
retval = IXGBE_ERR_MBX;
For 82599 and x540 VFs and PF share the same RSS Key. Therefore we will return the same RSS key for all VFs. x550 on the other hand has a separate RSS Key for every pool. Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com> --- New in v5: - Use a newly added netdev op to allow/prevent the RSS Hash Key querying on a per-VF basis. New in v3: - Added a support for x550 devices. New in v1 (compared to RFC): - Use "if-else" statement instead of a "switch-case" for a single option case (in ixgbe_get_vf_rss_key()). --- drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h | 2 ++ drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 27 ++++++++++++++++++++++++++ 2 files changed, 29 insertions(+)