ixgbe: handle IXGBE_VF_GET_PF_LINK_STATE mailbox operation

Update supported API version and provide handler for
IXGBE_VF_GET_PF_LINK_STATE cmd.
Simply put stored values of link speed and link_up from adapter context.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Link: https://lore.kernel.org/stable/20250828095227.1857066-3-jedrzej.jagielski%40intel.com
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251009-jk-iwl-net-2025-10-01-v3-3-ef32a425b92a@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
index 4af149b63a39fe9dc20e3e199a64479838c8810f..f7256a339c99b7abcd18ac1cee29c55c3e9707b8 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
@@ -50,6 +50,8 @@ enum ixgbe_pfvf_api_rev {
        ixgbe_mbox_api_12,      /* API version 1.2, linux/freebsd VF driver */
        ixgbe_mbox_api_13,      /* API version 1.3, linux/freebsd VF driver */
        ixgbe_mbox_api_14,      /* API version 1.4, linux/freebsd VF driver */
+       ixgbe_mbox_api_15,      /* API version 1.5, linux/freebsd VF driver */
+       ixgbe_mbox_api_16,      /* API version 1.6, linux/freebsd VF driver */
        /* This value should always be last */
        ixgbe_mbox_api_unknown, /* indicates that API version is not known */
 };
@@ -86,6 +88,9 @@ enum ixgbe_pfvf_api_rev {
 
 #define IXGBE_VF_GET_LINK_STATE 0x10 /* get vf link state */
 
+/* mailbox API, version 1.6 VF requests */
+#define IXGBE_VF_GET_PF_LINK_STATE     0x11 /* request PF to send link info */
+
 /* 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 */

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 32ac1e020d915d1e5015937e3a2d84110cc548b3..b09271d61a4efcdf1e8d6eb54c205ebb93f24241 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -510,6 +510,7 @@ static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf
                case ixgbe_mbox_api_12:
                case ixgbe_mbox_api_13:
                case ixgbe_mbox_api_14:
+               case ixgbe_mbox_api_16:
                        /* Version 1.1 supports jumbo frames on VFs if PF has
                         * jumbo frames enabled which means legacy VFs are
                         * disabled
@@ -1046,6 +1047,7 @@ static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
        case ixgbe_mbox_api_12:
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_14:
+       case ixgbe_mbox_api_16:
                adapter->vfinfo[vf].vf_api = api;
                return 0;
        default:
@@ -1072,6 +1074,7 @@ static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
        case ixgbe_mbox_api_12:
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_14:
+       case ixgbe_mbox_api_16:
                break;
        default:
                return -1;
@@ -1112,6 +1115,7 @@ static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 
        /* verify the PF is supporting the correct API */
        switch (adapter->vfinfo[vf].vf_api) {
+       case ixgbe_mbox_api_16:
        case ixgbe_mbox_api_14:
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_12:
@@ -1145,6 +1149,7 @@ static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
 
        /* verify the PF is supporting the correct API */
        switch (adapter->vfinfo[vf].vf_api) {
+       case ixgbe_mbox_api_16:
        case ixgbe_mbox_api_14:
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_12:
@@ -1174,6 +1179,7 @@ static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
                fallthrough;
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_14:
+       case ixgbe_mbox_api_16:
                break;
        default:
                return -EOPNOTSUPP;
@@ -1244,6 +1250,7 @@ static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
        case ixgbe_mbox_api_12:
        case ixgbe_mbox_api_13:
        case ixgbe_mbox_api_14:
+       case ixgbe_mbox_api_16:
                break;
        default:
                return -EOPNOTSUPP;
@@ -1254,6 +1261,38 @@ static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
        return 0;
 }
 
+/**
+ * ixgbe_send_vf_link_status - send link status data to VF
+ * @adapter: pointer to adapter struct
+ * @msgbuf: pointer to message buffers
+ * @vf: VF identifier
+ *
+ * Reply for IXGBE_VF_GET_PF_LINK_STATE mbox command sending link status data.
+ *
+ * Return: 0 on success or -EOPNOTSUPP when operation is not supported.
+ */
+static int ixgbe_send_vf_link_status(struct ixgbe_adapter *adapter,
+                                    u32 *msgbuf, u32 vf)
+{
+       struct ixgbe_hw *hw = &adapter->hw;
+
+       switch (adapter->vfinfo[vf].vf_api) {
+       case ixgbe_mbox_api_16:
+               if (hw->mac.type != ixgbe_mac_e610)
+                       return -EOPNOTSUPP;
+               break;
+       default:
+               return -EOPNOTSUPP;
+       }
+       /* Simply provide stored values as watchdog & link status events take
+        * care of its freshness.
+        */
+       msgbuf[1] = adapter->link_speed;
+       msgbuf[2] = adapter->link_up;
+
+       return 0;
+}
+
 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
 {
        u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
@@ -1328,6 +1367,9 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
        case IXGBE_VF_IPSEC_DEL:
                retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
                break;
+       case IXGBE_VF_GET_PF_LINK_STATE:
+               retval = ixgbe_send_vf_link_status(adapter, msgbuf, vf);
+               break;
        default:
                e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
                retval = -EIO;