[dpdk-dev] [PATCH v6 2/6] ixgbe: Negotiate VF API version

[Ouyang Changchun <changchun.ouyang@intel.com>]

Negotiate API version with VF when receiving the IXGBE_VF_API_NEGOTIATE message.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
---
 lib/librte_pmd_ixgbe/ixgbe_ethdev.h |  1 +
 lib/librte_pmd_ixgbe/ixgbe_pf.c     | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
index ca99170..730098d 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h
@@ -159,6 +159,7 @@ struct ixgbe_vf_info {
 	uint16_t tx_rate[IXGBE_MAX_QUEUE_NUM_PER_VF];
 	uint16_t vlan_count;
 	uint8_t spoofchk_enabled;
+	uint8_t api_version;
 };
 
 /*
diff --git a/lib/librte_pmd_ixgbe/ixgbe_pf.c b/lib/librte_pmd_ixgbe/ixgbe_pf.c
index 51da1fd..495aff5 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_pf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_pf.c
@@ -469,6 +469,28 @@ ixgbe_set_vf_lpe(struct rte_eth_dev *dev, __rte_unused uint32_t vf, uint32_t *ms
 }
 
 static int
+ixgbe_negotiate_vf_api(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+{
+	uint32_t api_version = msgbuf[1];
+	struct ixgbe_vf_info *vfinfo =
+		*IXGBE_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private);
+
+	switch (api_version) {
+	case ixgbe_mbox_api_10:
+	case ixgbe_mbox_api_11:
+		vfinfo[vf].api_version = (uint8_t)api_version;
+		return 0;
+	default:
+		break;
+	}
+
+	RTE_LOG(ERR, PMD, "Negotiate invalid api version %u from VF %d\n",
+		api_version, vf);
+
+	return -1;
+}
+
+static int
 ixgbe_rcv_msg_from_vf(struct rte_eth_dev *dev, uint16_t vf)
 {
 	uint16_t mbx_size = IXGBE_VFMAILBOX_SIZE;
@@ -512,6 +534,9 @@ ixgbe_rcv_msg_from_vf(struct rte_eth_dev *dev, uint16_t vf)
 	case IXGBE_VF_SET_VLAN:
 		retval = ixgbe_vf_set_vlan(dev, vf, msgbuf);
 		break;
+	case IXGBE_VF_API_NEGOTIATE:
+		retval = ixgbe_negotiate_vf_api(dev, vf, msgbuf);
+		break;
 	default:
 		PMD_DRV_LOG(DEBUG, "Unhandled Msg %8.8x", (unsigned)msgbuf[0]);
 		retval = IXGBE_ERR_MBX;
-- 
1.8.4.2