diff mbox series

[v2,3/7,iwl-next] idpf: refactor queue related virtchnl messages

Message ID 20240126054747.960172-4-alan.brady@intel.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series idpf: refactor virtchnl messages | expand

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Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1064 this patch: 1064
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 0 of 0 maintainers
netdev/build_clang success Errors and warnings before: 1081 this patch: 1081
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1081 this patch: 1081
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 468 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Alan Brady Jan. 26, 2024, 5:47 a.m. UTC 
This reworks queue specific virtchnl messages to use the added
transaction API.  It is fairly mechanical and generally makes the
functions using it more simple. Functions using transaction API no
longer need to take the vc_buf_lock since it's not using it anymore.
After filling out an idpf_vc_xn_params struct, idpf_vc_xn_exec takes
care of the send and recv handling.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Igor Bagnucki <igor.bagnucki@intel.com>
Signed-off-by: Alan Brady <alan.brady@intel.com>
---
 drivers/net/ethernet/intel/idpf/idpf.h        |   2 +-
 .../net/ethernet/intel/idpf/idpf_virtchnl.c   | 252 +++++++-----------
 2 files changed, 98 insertions(+), 156 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h
index 92103c3cf5a0..393f6e46012f 100644
--- a/drivers/net/ethernet/intel/idpf/idpf.h
+++ b/drivers/net/ethernet/intel/idpf/idpf.h
@@ -648,7 +648,7 @@  struct idpf_vector_lifo {
 struct idpf_vport_config {
 	struct idpf_vport_user_config_data user_config;
 	struct idpf_vport_max_q max_q;
-	void *req_qs_chunks;
+	struct virtchnl2_add_queues *req_qs_chunks;
 	spinlock_t mac_filter_list_lock;
 	DECLARE_BITMAP(flags, IDPF_VPORT_CONFIG_FLAGS_NBITS);
 };
diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
index 1cf7293bd532..231fe7c7819c 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
@@ -800,47 +800,15 @@  int idpf_recv_mb_msg(struct idpf_adapter *adapter, u32 op,
 		case VIRTCHNL2_OP_ENABLE_VPORT:
 		case VIRTCHNL2_OP_DISABLE_VPORT:
 		case VIRTCHNL2_OP_DESTROY_VPORT:
-			err = idpf_vc_xn_forward_reply(adapter, &ctlq_msg);
-			break;
 		case VIRTCHNL2_OP_CONFIG_TX_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_CONFIG_TXQ,
-					   IDPF_VC_CONFIG_TXQ_ERR);
-			break;
 		case VIRTCHNL2_OP_CONFIG_RX_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_CONFIG_RXQ,
-					   IDPF_VC_CONFIG_RXQ_ERR);
-			break;
 		case VIRTCHNL2_OP_ENABLE_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_ENA_QUEUES,
-					   IDPF_VC_ENA_QUEUES_ERR);
-			break;
 		case VIRTCHNL2_OP_DISABLE_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_DIS_QUEUES,
-					   IDPF_VC_DIS_QUEUES_ERR);
-			break;
 		case VIRTCHNL2_OP_ADD_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_ADD_QUEUES,
-					   IDPF_VC_ADD_QUEUES_ERR);
-			break;
 		case VIRTCHNL2_OP_DEL_QUEUES:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_DEL_QUEUES,
-					   IDPF_VC_DEL_QUEUES_ERR);
-			break;
 		case VIRTCHNL2_OP_MAP_QUEUE_VECTOR:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_MAP_IRQ,
-					   IDPF_VC_MAP_IRQ_ERR);
-			break;
 		case VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR:
-			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
-					   IDPF_VC_UNMAP_IRQ,
-					   IDPF_VC_UNMAP_IRQ_ERR);
+			err = idpf_vc_xn_forward_reply(adapter, &ctlq_msg);
 			break;
 		case VIRTCHNL2_OP_GET_STATS:
 			idpf_recv_vchnl_op(adapter, vport, &ctlq_msg,
@@ -1775,11 +1743,13 @@  int idpf_send_disable_vport_msg(struct idpf_vport *vport)
  */
 static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
 {
+	struct idpf_vc_xn_params xn_params = {};
 	struct virtchnl2_config_tx_queues *ctq;
 	u32 config_sz, chunk_sz, buf_sz;
 	int totqs, num_msgs, num_chunks;
 	struct virtchnl2_txq_info *qi;
 	int err = 0, i, k = 0;
+	ssize_t reply_sz;
 
 	totqs = vport->num_txq + vport->num_complq;
 	qi = kcalloc(totqs, sizeof(struct virtchnl2_txq_info), GFP_KERNEL);
@@ -1862,7 +1832,8 @@  static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
 		goto error;
 	}
 
-	mutex_lock(&vport->vc_buf_lock);
+	xn_params.vc_op = VIRTCHNL2_OP_CONFIG_TX_QUEUES;
+	xn_params.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC;
 
 	for (i = 0, k = 0; i < num_msgs; i++) {
 		memset(ctq, 0, buf_sz);
@@ -1870,17 +1841,13 @@  static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
 		ctq->num_qinfo = cpu_to_le16(num_chunks);
 		memcpy(ctq->qinfo, &qi[k], chunk_sz * num_chunks);
 
-		err = idpf_send_mb_msg(vport->adapter,
-				       VIRTCHNL2_OP_CONFIG_TX_QUEUES,
-				       buf_sz, (u8 *)ctq, 0);
-		if (err)
-			goto mbx_error;
-
-		err = idpf_wait_for_event(vport->adapter, vport,
-					  IDPF_VC_CONFIG_TXQ,
-					  IDPF_VC_CONFIG_TXQ_ERR);
-		if (err)
+		xn_params.send_buf.iov_base = ctq;
+		xn_params.send_buf.iov_len = buf_sz;
+		reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
+		if (reply_sz < 0) {
+			err = reply_sz;
 			goto mbx_error;
+		}
 
 		k += num_chunks;
 		totqs -= num_chunks;
@@ -1890,7 +1857,6 @@  static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
 	}
 
 mbx_error:
-	mutex_unlock(&vport->vc_buf_lock);
 	kfree(ctq);
 error:
 	kfree(qi);
@@ -1907,11 +1873,13 @@  static int idpf_send_config_tx_queues_msg(struct idpf_vport *vport)
  */
 static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
 {
+	struct idpf_vc_xn_params xn_params = {};
 	struct virtchnl2_config_rx_queues *crq;
 	u32 config_sz, chunk_sz, buf_sz;
 	int totqs, num_msgs, num_chunks;
 	struct virtchnl2_rxq_info *qi;
 	int err = 0, i, k = 0;
+	ssize_t reply_sz;
 
 	totqs = vport->num_rxq + vport->num_bufq;
 	qi = kcalloc(totqs, sizeof(struct virtchnl2_rxq_info), GFP_KERNEL);
@@ -2014,7 +1982,8 @@  static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
 		goto error;
 	}
 
-	mutex_lock(&vport->vc_buf_lock);
+	xn_params.vc_op = VIRTCHNL2_OP_CONFIG_RX_QUEUES;
+	xn_params.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC;
 
 	for (i = 0, k = 0; i < num_msgs; i++) {
 		memset(crq, 0, buf_sz);
@@ -2022,17 +1991,13 @@  static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
 		crq->num_qinfo = cpu_to_le16(num_chunks);
 		memcpy(crq->qinfo, &qi[k], chunk_sz * num_chunks);
 
-		err = idpf_send_mb_msg(vport->adapter,
-				       VIRTCHNL2_OP_CONFIG_RX_QUEUES,
-				       buf_sz, (u8 *)crq, 0);
-		if (err)
-			goto mbx_error;
-
-		err = idpf_wait_for_event(vport->adapter, vport,
-					  IDPF_VC_CONFIG_RXQ,
-					  IDPF_VC_CONFIG_RXQ_ERR);
-		if (err)
+		xn_params.send_buf.iov_base = crq;
+		xn_params.send_buf.iov_len = buf_sz;
+		reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
+		if (reply_sz < 0) {
+			err = reply_sz;
 			goto mbx_error;
+		}
 
 		k += num_chunks;
 		totqs -= num_chunks;
@@ -2042,7 +2007,6 @@  static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
 	}
 
 mbx_error:
-	mutex_unlock(&vport->vc_buf_lock);
 	kfree(crq);
 error:
 	kfree(qi);
@@ -2054,29 +2018,21 @@  static int idpf_send_config_rx_queues_msg(struct idpf_vport *vport)
  * idpf_send_ena_dis_queues_msg - Send virtchnl enable or disable
  * queues message
  * @vport: virtual port data structure
- * @vc_op: virtchnl op code to send
+ * @ena: if true enable, false disable
  *
  * Send enable or disable queues virtchnl message. Returns 0 on success,
  * negative on failure.
  */
-static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
+static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, bool ena)
 {
 	u32 num_msgs, num_chunks, num_txq, num_rxq, num_q;
-	struct idpf_adapter *adapter = vport->adapter;
+	struct idpf_vc_xn_params xn_params = {};
 	struct virtchnl2_del_ena_dis_queues *eq;
 	struct virtchnl2_queue_chunks *qcs;
 	struct virtchnl2_queue_chunk *qc;
 	u32 config_sz, chunk_sz, buf_sz;
 	int i, j, k = 0, err = 0;
-
-	/* validate virtchnl op */
-	switch (vc_op) {
-	case VIRTCHNL2_OP_ENABLE_QUEUES:
-	case VIRTCHNL2_OP_DISABLE_QUEUES:
-		break;
-	default:
-		return -EINVAL;
-	}
+	ssize_t reply_sz;
 
 	num_txq = vport->num_txq + vport->num_complq;
 	num_rxq = vport->num_rxq + vport->num_bufq;
@@ -2182,7 +2138,13 @@  static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
 		goto error;
 	}
 
-	mutex_lock(&vport->vc_buf_lock);
+	if (ena) {
+		xn_params.vc_op = VIRTCHNL2_OP_ENABLE_QUEUES;
+		xn_params.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC;
+	} else {
+		xn_params.vc_op = VIRTCHNL2_OP_DISABLE_QUEUES;
+		xn_params.timeout_ms = IDPF_VC_XN_MIN_TIMEOUT_MSEC;
+	}
 
 	for (i = 0, k = 0; i < num_msgs; i++) {
 		memset(eq, 0, buf_sz);
@@ -2191,20 +2153,13 @@  static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
 		qcs = &eq->chunks;
 		memcpy(qcs->chunks, &qc[k], chunk_sz * num_chunks);
 
-		err = idpf_send_mb_msg(adapter, vc_op, buf_sz, (u8 *)eq, 0);
-		if (err)
-			goto mbx_error;
-
-		if (vc_op == VIRTCHNL2_OP_ENABLE_QUEUES)
-			err = idpf_wait_for_event(adapter, vport,
-						  IDPF_VC_ENA_QUEUES,
-						  IDPF_VC_ENA_QUEUES_ERR);
-		else
-			err = idpf_min_wait_for_event(adapter, vport,
-						      IDPF_VC_DIS_QUEUES,
-						      IDPF_VC_DIS_QUEUES_ERR);
-		if (err)
+		xn_params.send_buf.iov_base = eq;
+		xn_params.send_buf.iov_len = buf_sz;
+		reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
+		if (reply_sz < 0) {
+			err = reply_sz;
 			goto mbx_error;
+		}
 
 		k += num_chunks;
 		num_q -= num_chunks;
@@ -2214,7 +2169,6 @@  static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
 	}
 
 mbx_error:
-	mutex_unlock(&vport->vc_buf_lock);
 	kfree(eq);
 error:
 	kfree(qc);
@@ -2233,12 +2187,13 @@  static int idpf_send_ena_dis_queues_msg(struct idpf_vport *vport, u32 vc_op)
  */
 int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map)
 {
-	struct idpf_adapter *adapter = vport->adapter;
 	struct virtchnl2_queue_vector_maps *vqvm;
+	struct idpf_vc_xn_params xn_params = {};
 	struct virtchnl2_queue_vector *vqv;
 	u32 config_sz, chunk_sz, buf_sz;
 	u32 num_msgs, num_chunks, num_q;
 	int i, j, k = 0, err = 0;
+	ssize_t reply_sz;
 
 	num_q = vport->num_txq + vport->num_rxq;
 
@@ -2324,34 +2279,27 @@  int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map)
 		goto error;
 	}
 
-	mutex_lock(&vport->vc_buf_lock);
+	if (map) {
+		xn_params.vc_op = VIRTCHNL2_OP_MAP_QUEUE_VECTOR;
+		xn_params.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC;
+	} else {
+		xn_params.vc_op = VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR;
+		xn_params.timeout_ms = IDPF_VC_XN_MIN_TIMEOUT_MSEC;
+	}
 
 	for (i = 0, k = 0; i < num_msgs; i++) {
 		memset(vqvm, 0, buf_sz);
+		xn_params.send_buf.iov_base = vqvm;
+		xn_params.send_buf.iov_len = buf_sz;
 		vqvm->vport_id = cpu_to_le32(vport->vport_id);
 		vqvm->num_qv_maps = cpu_to_le16(num_chunks);
 		memcpy(vqvm->qv_maps, &vqv[k], chunk_sz * num_chunks);
 
-		if (map) {
-			err = idpf_send_mb_msg(adapter,
-					       VIRTCHNL2_OP_MAP_QUEUE_VECTOR,
-					       buf_sz, (u8 *)vqvm, 0);
-			if (!err)
-				err = idpf_wait_for_event(adapter, vport,
-							  IDPF_VC_MAP_IRQ,
-							  IDPF_VC_MAP_IRQ_ERR);
-		} else {
-			err = idpf_send_mb_msg(adapter,
-					       VIRTCHNL2_OP_UNMAP_QUEUE_VECTOR,
-					       buf_sz, (u8 *)vqvm, 0);
-			if (!err)
-				err =
-				idpf_min_wait_for_event(adapter, vport,
-							IDPF_VC_UNMAP_IRQ,
-							IDPF_VC_UNMAP_IRQ_ERR);
-		}
-		if (err)
+		reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
+		if (reply_sz < buf_sz) {
+			err = reply_sz < 0 ? reply_sz : -EIO;
 			goto mbx_error;
+		}
 
 		k += num_chunks;
 		num_q -= num_chunks;
@@ -2361,7 +2309,6 @@  int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map)
 	}
 
 mbx_error:
-	mutex_unlock(&vport->vc_buf_lock);
 	kfree(vqvm);
 error:
 	kfree(vqv);
@@ -2378,7 +2325,7 @@  int idpf_send_map_unmap_queue_vector_msg(struct idpf_vport *vport, bool map)
  */
 int idpf_send_enable_queues_msg(struct idpf_vport *vport)
 {
-	return idpf_send_ena_dis_queues_msg(vport, VIRTCHNL2_OP_ENABLE_QUEUES);
+	return idpf_send_ena_dis_queues_msg(vport, true);
 }
 
 /**
@@ -2392,7 +2339,7 @@  int idpf_send_disable_queues_msg(struct idpf_vport *vport)
 {
 	int err, i;
 
-	err = idpf_send_ena_dis_queues_msg(vport, VIRTCHNL2_OP_DISABLE_QUEUES);
+	err = idpf_send_ena_dis_queues_msg(vport, false);
 	if (err)
 		return err;
 
@@ -2438,22 +2385,21 @@  static void idpf_convert_reg_to_queue_chunks(struct virtchnl2_queue_chunk *dchun
  */
 int idpf_send_delete_queues_msg(struct idpf_vport *vport)
 {
-	struct idpf_adapter *adapter = vport->adapter;
 	struct virtchnl2_create_vport *vport_params;
 	struct virtchnl2_queue_reg_chunks *chunks;
+	struct idpf_vc_xn_params xn_params = {};
 	struct virtchnl2_del_ena_dis_queues *eq;
 	struct idpf_vport_config *vport_config;
 	u16 vport_idx = vport->idx;
-	int buf_size, err;
+	ssize_t reply_sz;
 	u16 num_chunks;
+	int buf_size;
 
-	vport_config = adapter->vport_config[vport_idx];
+	vport_config = vport->adapter->vport_config[vport_idx];
 	if (vport_config->req_qs_chunks) {
-		struct virtchnl2_add_queues *vc_aq =
-			(struct virtchnl2_add_queues *)vport_config->req_qs_chunks;
-		chunks = &vc_aq->chunks;
+		chunks = &vport_config->req_qs_chunks->chunks;
 	} else {
-		vport_params = adapter->vport_params_recvd[vport_idx];
+		vport_params = vport->adapter->vport_params_recvd[vport_idx];
 		chunks = &vport_params->chunks;
 	}
 
@@ -2470,21 +2416,14 @@  int idpf_send_delete_queues_msg(struct idpf_vport *vport)
 	idpf_convert_reg_to_queue_chunks(eq->chunks.chunks, chunks->chunks,
 					 num_chunks);
 
-	mutex_lock(&vport->vc_buf_lock);
-
-	err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_DEL_QUEUES,
-			       buf_size, (u8 *)eq, 0);
-	if (err)
-		goto rel_lock;
-
-	err = idpf_min_wait_for_event(adapter, vport, IDPF_VC_DEL_QUEUES,
-				      IDPF_VC_DEL_QUEUES_ERR);
-
-rel_lock:
-	mutex_unlock(&vport->vc_buf_lock);
+	xn_params.vc_op = VIRTCHNL2_OP_DEL_QUEUES;
+	xn_params.timeout_ms = IDPF_VC_XN_MIN_TIMEOUT_MSEC;
+	xn_params.send_buf.iov_base = eq;
+	xn_params.send_buf.iov_len = buf_size;
+	reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
 	kfree(eq);
 
-	return err;
+	return reply_sz < 0 ? reply_sz : 0;
 }
 
 /**
@@ -2519,14 +2458,21 @@  int idpf_send_config_queues_msg(struct idpf_vport *vport)
 int idpf_send_add_queues_msg(const struct idpf_vport *vport, u16 num_tx_q,
 			     u16 num_complq, u16 num_rx_q, u16 num_rx_bufq)
 {
-	struct idpf_adapter *adapter = vport->adapter;
+	struct idpf_vc_xn_params xn_params = {};
 	struct idpf_vport_config *vport_config;
-	struct virtchnl2_add_queues aq = { };
+	struct virtchnl2_add_queues aq = {};
 	struct virtchnl2_add_queues *vc_msg;
 	u16 vport_idx = vport->idx;
-	int size, err;
+	int size, err = 0;
+	ssize_t reply_sz;
+
+	vc_msg = kzalloc(IDPF_CTLQ_MAX_BUF_LEN, GFP_KERNEL);
+	if (!vc_msg)
+		return -ENOMEM;
 
-	vport_config = adapter->vport_config[vport_idx];
+	vport_config = vport->adapter->vport_config[vport_idx];
+	kfree(vport_config->req_qs_chunks);
+	vport_config->req_qs_chunks = NULL;
 
 	aq.vport_id = cpu_to_le32(vport->vport_id);
 	aq.num_tx_q = cpu_to_le16(num_tx_q);
@@ -2534,45 +2480,41 @@  int idpf_send_add_queues_msg(const struct idpf_vport *vport, u16 num_tx_q,
 	aq.num_rx_q = cpu_to_le16(num_rx_q);
 	aq.num_rx_bufq = cpu_to_le16(num_rx_bufq);
 
-	mutex_lock(&((struct idpf_vport *)vport)->vc_buf_lock);
-
-	err = idpf_send_mb_msg(adapter, VIRTCHNL2_OP_ADD_QUEUES,
-			       sizeof(struct virtchnl2_add_queues), (u8 *)&aq, 0);
-	if (err)
-		goto rel_lock;
-
-	/* We want vport to be const to prevent incidental code changes making
-	 * changes to the vport config. We're making a special exception here
-	 * to discard const to use the virtchnl.
-	 */
-	err = idpf_wait_for_event(adapter, (struct idpf_vport *)vport,
-				  IDPF_VC_ADD_QUEUES, IDPF_VC_ADD_QUEUES_ERR);
-	if (err)
-		goto rel_lock;
-
-	kfree(vport_config->req_qs_chunks);
-	vport_config->req_qs_chunks = NULL;
+	xn_params.vc_op = VIRTCHNL2_OP_ADD_QUEUES;
+	xn_params.timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC;
+	xn_params.send_buf.iov_base = &aq;
+	xn_params.send_buf.iov_len = sizeof(aq);
+	xn_params.recv_buf.iov_base = vc_msg;
+	xn_params.recv_buf.iov_len = IDPF_CTLQ_MAX_BUF_LEN;
+	reply_sz = idpf_vc_xn_exec(vport->adapter, xn_params);
+	if (reply_sz < 0) {
+		err = reply_sz;
+		goto error;
+	}
 
-	vc_msg = (struct virtchnl2_add_queues *)vport->vc_msg;
 	/* compare vc_msg num queues with vport num queues */
 	if (le16_to_cpu(vc_msg->num_tx_q) != num_tx_q ||
 	    le16_to_cpu(vc_msg->num_rx_q) != num_rx_q ||
 	    le16_to_cpu(vc_msg->num_tx_complq) != num_complq ||
 	    le16_to_cpu(vc_msg->num_rx_bufq) != num_rx_bufq) {
 		err = -EINVAL;
-		goto rel_lock;
+		goto error;
 	}
 
 	size = struct_size(vc_msg, chunks.chunks,
 			   le16_to_cpu(vc_msg->chunks.num_chunks));
+	if (reply_sz < size) {
+		err = -EIO;
+		goto error;
+	}
 	vport_config->req_qs_chunks = kmemdup(vc_msg, size, GFP_KERNEL);
 	if (!vport_config->req_qs_chunks) {
 		err = -ENOMEM;
-		goto rel_lock;
+		goto error;
 	}
 
-rel_lock:
-	mutex_unlock(&((struct idpf_vport *)vport)->vc_buf_lock);
+error:
+	kfree(vc_msg);
 
 	return err;
 }