net/iavf: fix VF reset when using DCF

[ upstream commit 0f9ec0cbd2a96c2bde3489fbc8f4e254f639905c ]

On the latest ice kernel driver, renegotiating
VIRTCHNL_OP_GET_VF_RESOURCES will fail when using DCF (Device Config
Function) if a hardware reset is not done.

Fix this by sending VIRTCHNL_OP_RESET_VF to PF before DPDK resets VF.

Note, this is effectively the following main branch commits squashed:
0f9ec0cbd2a9 ("net/iavf: fix VF reset when using DCF")
b34fe66ea893 ("net/iavf: delay VF reset command")

Fixes: e74e1bb ("net/iavf: enable port reset")

Signed-off-by: Bruce Richardson <[email protected]>

drivers/common/iavf/iavf_prototype.h

@@ -83,6 +83,7 @@ void iavf_destroy_spinlock(struct iavf_spinlock *sp);
 __rte_internal
 void iavf_vf_parse_hw_config(struct iavf_hw *hw,
 			     struct virtchnl_vf_resource *msg);
+__rte_internal
 enum iavf_status iavf_vf_reset(struct iavf_hw *hw);
 __rte_internal
 enum iavf_status iavf_aq_send_msg_to_pf(struct iavf_hw *hw,

drivers/common/iavf/version.map

@@ -7,6 +7,7 @@ INTERNAL {
 	iavf_set_mac_type;
 	iavf_shutdown_adminq;
 	iavf_vf_parse_hw_config;
+	iavf_vf_reset;
 
 	local: *;
 };

drivers/net/iavf/iavf_ethdev.c

@@ -2701,6 +2701,7 @@ iavf_dev_close(struct rte_eth_dev *dev)
 		vf->max_rss_qregion = IAVF_MAX_NUM_QUEUES_DFLT;
 	}
 
+	iavf_vf_reset(hw);
 	iavf_shutdown_adminq(hw);
 	if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) {
 		/* disable uio intr before callback unregister */