diff --git a/drivers/infiniband/hw/hns/hns_roce_bond.c b/drivers/infiniband/hw/hns/hns_roce_bond.c
index ce3646ed3fbf..e09fe7ef16ee 100644
--- a/drivers/infiniband/hw/hns/hns_roce_bond.c
+++ b/drivers/infiniband/hw/hns/hns_roce_bond.c
@@ -3,6 +3,7 @@
  * Copyright (c) 2025 Hisilicon Limited.
  */
 
+#include <net/bonding.h>
 #include "hns_roce_device.h"
 #include "hns_roce_hw_v2.h"
 #include "hns_roce_bond.h"
@@ -74,6 +75,143 @@ struct hns_roce_bond_group *hns_roce_get_bond_grp(struct net_device *net_dev,
 	return NULL;
 }
 
+static int hns_roce_set_bond_netdev(struct hns_roce_bond_group *bond_grp,
+				    struct hns_roce_dev *hr_dev)
+{
+	struct net_device *active_dev;
+	struct net_device *old_dev;
+	int i, ret = 0;
+
+	if (bond_grp->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
+		rcu_read_lock();
+		active_dev =
+			bond_option_active_slave_get_rcu(netdev_priv(bond_grp->upper_dev));
+		rcu_read_unlock();
+	} else {
+		for (i = 0; i < ROCE_BOND_FUNC_MAX; i++) {
+			active_dev = bond_grp->bond_func_info[i].net_dev;
+			if (active_dev &&
+			    ib_get_curr_port_state(active_dev) == IB_PORT_ACTIVE)
+				break;
+		}
+	}
+
+	if (!active_dev || i == ROCE_BOND_FUNC_MAX)
+		active_dev = get_hr_netdev(hr_dev, 0);
+
+	old_dev = ib_device_get_netdev(&hr_dev->ib_dev, 1);
+	if (old_dev == active_dev)
+		goto out;
+
+	ret = ib_device_set_netdev(&hr_dev->ib_dev, active_dev, 1);
+	if (ret) {
+		dev_err(hr_dev->dev, "failed to set netdev for bond.\n");
+		goto out;
+	}
+
+	if (bond_grp->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
+		if (old_dev)
+			roce_del_all_netdev_gids(&hr_dev->ib_dev, 1, old_dev);
+		rdma_roce_rescan_port(&hr_dev->ib_dev, 1);
+	}
+out:
+	dev_put(old_dev);
+	return ret;
+}
+
+bool hns_roce_bond_is_active(struct hns_roce_dev *hr_dev)
+{
+	struct net_device *net_dev = get_hr_netdev(hr_dev, 0);
+	struct hns_roce_bond_group *bond_grp;
+	u8 bus_num = get_hr_bus_num(hr_dev);
+
+	bond_grp = hns_roce_get_bond_grp(net_dev, bus_num);
+	if (bond_grp && bond_grp->bond_state != HNS_ROCE_BOND_NOT_BONDED &&
+	    bond_grp->bond_state != HNS_ROCE_BOND_NOT_ATTACHED)
+		return true;
+
+	return false;
+}
+
+static void hns_roce_slave_uninit(struct hns_roce_bond_group *bond_grp,
+				  u8 func_idx)
+{
+	struct hnae3_handle *handle;
+
+	handle = bond_grp->bond_func_info[func_idx].handle;
+	if (handle->priv)
+		hns_roce_bond_uninit_client(bond_grp, func_idx);
+}
+
+static struct hns_roce_dev
+	*hns_roce_slave_init(struct hns_roce_bond_group *bond_grp,
+			     u8 func_idx, bool need_switch);
+
+static int switch_main_dev(struct hns_roce_bond_group *bond_grp,
+			   u8 main_func_idx)
+{
+	struct hns_roce_dev *hr_dev;
+	struct net_device *net_dev;
+	u8 i;
+
+	bond_grp->main_hr_dev = NULL;
+	hns_roce_bond_uninit_client(bond_grp, main_func_idx);
+
+	for (i = 0; i < ROCE_BOND_FUNC_MAX; i++) {
+		net_dev = bond_grp->bond_func_info[i].net_dev;
+		if ((bond_grp->slave_map & (1U << i)) && net_dev) {
+			/* In case this slave is still being registered as
+			 * a non-bonded PF, uninit it first and then re-init
+			 * it as the main device.
+			 */
+			hns_roce_slave_uninit(bond_grp, i);
+			hr_dev = hns_roce_slave_init(bond_grp, i, false);
+			if (hr_dev) {
+				bond_grp->main_hr_dev = hr_dev;
+				break;
+			}
+		}
+	}
+
+	if (!bond_grp->main_hr_dev)
+		return -ENODEV;
+
+	return 0;
+}
+
+static struct hns_roce_dev
+	*hns_roce_slave_init(struct hns_roce_bond_group *bond_grp,
+			     u8 func_idx, bool need_switch)
+{
+	struct hns_roce_dev *hr_dev = NULL;
+	struct hnae3_handle *handle;
+	u8 main_func_idx;
+	int ret;
+
+	if (need_switch) {
+		main_func_idx = PCI_FUNC(bond_grp->main_hr_dev->pci_dev->devfn);
+		if (func_idx == main_func_idx) {
+			ret = switch_main_dev(bond_grp, main_func_idx);
+			if (ret == -ENODEV)
+				return NULL;
+		}
+	}
+
+	handle = bond_grp->bond_func_info[func_idx].handle;
+	if (handle) {
+		if (handle->priv)
+			return handle->priv;
+		/* Prevent this device from being initialized as a bond device */
+		if (need_switch)
+			bond_grp->bond_func_info[func_idx].net_dev = NULL;
+		hr_dev = hns_roce_bond_init_client(bond_grp, func_idx);
+		if (!hr_dev)
+			BOND_ERR_LOG("failed to init slave %u.\n", func_idx);
+	}
+
+	return hr_dev;
+}
+
 static struct hns_roce_die_info *alloc_die_info(int bus_num)
 {
 	struct hns_roce_die_info *die_info;
@@ -204,6 +342,35 @@ static void hns_roce_attach_bond_grp(struct hns_roce_bond_group *bond_grp,
 	bond_grp->bond_ready = false;
 }
 
+static void hns_roce_detach_bond_grp(struct hns_roce_bond_group *bond_grp)
+{
+	mutex_lock(&bond_grp->bond_mutex);
+
+	bond_grp->upper_dev = NULL;
+	bond_grp->main_hr_dev = NULL;
+	bond_grp->bond_ready = false;
+	bond_grp->bond_state = HNS_ROCE_BOND_NOT_ATTACHED;
+	bond_grp->slave_map = 0;
+	memset(bond_grp->bond_func_info, 0, sizeof(bond_grp->bond_func_info));
+
+	mutex_unlock(&bond_grp->bond_mutex);
+}
+
+void hns_roce_cleanup_bond(struct hns_roce_bond_group *bond_grp)
+{
+	int ret;
+
+	ret = bond_grp->main_hr_dev ?
+	      hns_roce_cmd_bond(bond_grp, HNS_ROCE_CLEAR_BOND) : -EIO;
+	if (ret)
+		BOND_ERR_LOG("failed to clear RoCE bond, ret = %d.\n", ret);
+	else
+		ibdev_info(&bond_grp->main_hr_dev->ib_dev,
+			   "RoCE clear bond finished!\n");
+
+	hns_roce_detach_bond_grp(bond_grp);
+}
+
 static bool lowerstate_event_filter(struct hns_roce_bond_group *bond_grp,
 				    struct net_device *net_dev)
 {
@@ -504,3 +671,14 @@ void hns_roce_dealloc_bond_grp(void)
 		}
 	}
 }
+
+int hns_roce_bond_init(struct hns_roce_dev *hr_dev)
+{
+	struct net_device *net_dev = get_hr_netdev(hr_dev, 0);
+	struct hns_roce_bond_group *bond_grp;
+	u8 bus_num = get_hr_bus_num(hr_dev);
+
+	bond_grp = hns_roce_get_bond_grp(net_dev, bus_num);
+
+	return hns_roce_set_bond_netdev(bond_grp, hr_dev);
+}
diff --git a/drivers/infiniband/hw/hns/hns_roce_bond.h b/drivers/infiniband/hw/hns/hns_roce_bond.h
index 84c94cbc397d..3ef7d28379cc 100644
--- a/drivers/infiniband/hw/hns/hns_roce_bond.h
+++ b/drivers/infiniband/hw/hns/hns_roce_bond.h
@@ -14,6 +14,9 @@
 
 #define BOND_ID(id) BIT(id)
 
+#define BOND_ERR_LOG(fmt, ...)				\
+	pr_err("HNS RoCE Bonding: " fmt, ##__VA_ARGS__)
+
 enum {
 	BOND_MODE_1,
 	BOND_MODE_2_4,
@@ -80,5 +83,8 @@ struct hns_roce_bond_group *hns_roce_get_bond_grp(struct net_device *net_dev,
 						  u8 bus_num);
 int hns_roce_alloc_bond_grp(struct hns_roce_dev *hr_dev);
 void hns_roce_dealloc_bond_grp(void);
+void hns_roce_cleanup_bond(struct hns_roce_bond_group *bond_grp);
+bool hns_roce_bond_is_active(struct hns_roce_dev *hr_dev);
+int hns_roce_bond_init(struct hns_roce_dev *hr_dev);
 
 #endif
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index cc1402fc8943..0add49d9664b 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -179,6 +179,7 @@ enum hns_roce_instance_state {
 	HNS_ROCE_STATE_INIT,
 	HNS_ROCE_STATE_INITED,
 	HNS_ROCE_STATE_UNINIT,
+	HNS_ROCE_STATE_BOND_UNINIT,
 };
 
 enum {
@@ -1304,7 +1305,7 @@ void hns_roce_flush_cqe(struct hns_roce_dev *hr_dev, u32 qpn);
 void hns_roce_srq_event(struct hns_roce_dev *hr_dev, u32 srqn, int event_type);
 void hns_roce_handle_device_err(struct hns_roce_dev *hr_dev);
 int hns_roce_init(struct hns_roce_dev *hr_dev);
-void hns_roce_exit(struct hns_roce_dev *hr_dev);
+void hns_roce_exit(struct hns_roce_dev *hr_dev, bool bond_cleanup);
 int hns_roce_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ib_cq);
 int hns_roce_fill_res_cq_entry_raw(struct sk_buff *msg, struct ib_cq *ib_cq);
 int hns_roce_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ib_qp);
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 2952684011a9..99c9db255346 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -7141,7 +7141,7 @@ static int __hns_roce_hw_v2_init_instance(struct hnae3_handle *handle)
 }
 
 static void __hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
-					   bool reset)
+					   bool reset, bool bond_cleanup)
 {
 	struct hns_roce_dev *hr_dev = handle->priv;
 
@@ -7153,7 +7153,7 @@ static void __hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
 	hr_dev->state = HNS_ROCE_DEVICE_STATE_UNINIT;
 	hns_roce_handle_device_err(hr_dev);
 
-	hns_roce_exit(hr_dev);
+	hns_roce_exit(hr_dev, bond_cleanup);
 	kfree(hr_dev->priv);
 	ib_dealloc_device(&hr_dev->ib_dev);
 }
@@ -7209,7 +7209,40 @@ static void hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
 
 	handle->rinfo.instance_state = HNS_ROCE_STATE_UNINIT;
 
-	__hns_roce_hw_v2_uninit_instance(handle, reset);
+	__hns_roce_hw_v2_uninit_instance(handle, reset, true);
+
+	handle->rinfo.instance_state = HNS_ROCE_STATE_NON_INIT;
+}
+
+struct hns_roce_dev
+	*hns_roce_bond_init_client(struct hns_roce_bond_group *bond_grp,
+				   int func_idx)
+{
+	struct hnae3_handle *handle;
+	int ret;
+
+	handle = bond_grp->bond_func_info[func_idx].handle;
+	if (!handle || !handle->client)
+		return NULL;
+
+	ret = hns_roce_hw_v2_init_instance(handle);
+	if (ret)
+		return NULL;
+
+	return handle->priv;
+}
+
+void hns_roce_bond_uninit_client(struct hns_roce_bond_group *bond_grp,
+				 int func_idx)
+{
+	struct hnae3_handle *handle = bond_grp->bond_func_info[func_idx].handle;
+
+	if (handle->rinfo.instance_state != HNS_ROCE_STATE_INITED)
+		return;
+
+	handle->rinfo.instance_state = HNS_ROCE_STATE_BOND_UNINIT;
+
+	__hns_roce_hw_v2_uninit_instance(handle, false, false);
 
 	handle->rinfo.instance_state = HNS_ROCE_STATE_NON_INIT;
 }
@@ -7278,7 +7311,7 @@ static int hns_roce_hw_v2_reset_notify_uninit(struct hnae3_handle *handle)
 	handle->rinfo.reset_state = HNS_ROCE_STATE_RST_UNINIT;
 	dev_info(&handle->pdev->dev, "In reset process RoCE client uninit.\n");
 	msleep(HNS_ROCE_V2_HW_RST_UNINT_DELAY);
-	__hns_roce_hw_v2_uninit_instance(handle, false);
+	__hns_roce_hw_v2_uninit_instance(handle, false, false);
 
 	return 0;
 }
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index 82cec4b38c92..285fe0875fac 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -1478,6 +1478,11 @@ struct hns_roce_bond_info {
 	__le32 hash_policy;
 };
 
+struct hns_roce_dev
+	*hns_roce_bond_init_client(struct hns_roce_bond_group *bond_grp,
+				   int func_idx);
+void hns_roce_bond_uninit_client(struct hns_roce_bond_group *bond_grp,
+				 int func_idx);
 int hns_roce_v2_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
 int hns_roce_cmd_bond(struct hns_roce_bond_group *bond_grp,
 		      enum hns_roce_bond_cmd_type bond_type);
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 7fa25586ccd8..4e8807a04298 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -614,9 +614,40 @@ static int hns_roce_get_hw_stats(struct ib_device *device,
 	return num_counters;
 }
 
-static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
+static void
+	hns_roce_unregister_bond_cleanup(struct hns_roce_dev *hr_dev,
+					 struct hns_roce_bond_group *bond_grp)
 {
+	struct net_device *net_dev;
+	int i;
+
+	/* To avoid the loss of other slave devices when main_hr_dev
+	 * is unregistered, re-initialize the remaining slaves before
+	 * the bond resources cleanup.
+	 */
+	bond_grp->bond_state = HNS_ROCE_BOND_NOT_BONDED;
+	for (i = 0; i < ROCE_BOND_FUNC_MAX; i++) {
+		net_dev = bond_grp->bond_func_info[i].net_dev;
+		if (net_dev && net_dev != get_hr_netdev(hr_dev, 0))
+			hns_roce_bond_init_client(bond_grp, i);
+	}
+
+	hns_roce_cleanup_bond(bond_grp);
+}
+
+static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev,
+				       bool bond_cleanup)
+{
+	struct net_device *net_dev = get_hr_netdev(hr_dev, 0);
 	struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;
+	struct hns_roce_bond_group *bond_grp;
+	u8 bus_num = get_hr_bus_num(hr_dev);
+
+	if (bond_cleanup && hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_BOND) {
+		bond_grp = hns_roce_get_bond_grp(net_dev, bus_num);
+		if (bond_grp)
+			hns_roce_unregister_bond_cleanup(hr_dev, bond_grp);
+	}
 
 	hr_dev->active = false;
 	unregister_netdevice_notifier(&iboe->nb);
@@ -746,6 +777,8 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 	ib_set_device_ops(ib_dev, &hns_roce_dev_ops);
 	ib_set_device_ops(ib_dev, &hns_roce_dev_restrack_ops);
 
+	dma_set_max_seg_size(dev, SZ_2G);
+
 	if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_BOND) {
 		ret = hns_roce_alloc_bond_grp(hr_dev);
 		if (ret) {
@@ -755,17 +788,26 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 		}
 	}
 
-	for (i = 0; i < hr_dev->caps.num_ports; i++) {
-		net_dev = get_hr_netdev(hr_dev, i);
-		if (!net_dev)
-			continue;
-
-		ret = ib_device_set_netdev(ib_dev, net_dev, i + 1);
-		if (ret)
+	if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_BOND &&
+	    hns_roce_bond_is_active(hr_dev)) {
+		ret = hns_roce_bond_init(hr_dev);
+		if (ret) {
+			dev_err(dev, "failed to init bond!\n");
 			return ret;
+		}
+		ret = ib_register_device(ib_dev, "hns_bond_%d", dev);
+	} else {
+		for (i = 0; i < hr_dev->caps.num_ports; i++) {
+			net_dev = get_hr_netdev(hr_dev, i);
+			if (!net_dev)
+				continue;
+
+			ret = ib_device_set_netdev(ib_dev, net_dev, i + 1);
+			if (ret)
+				return ret;
+		}
+		ret = ib_register_device(ib_dev, "hns_%d", dev);
 	}
-	dma_set_max_seg_size(dev, SZ_2G);
-	ret = ib_register_device(ib_dev, "hns_%d", dev);
 	if (ret) {
 		dev_err(dev, "ib_register_device failed!\n");
 		return ret;
@@ -1165,10 +1207,10 @@ int hns_roce_init(struct hns_roce_dev *hr_dev)
 	return ret;
 }
 
-void hns_roce_exit(struct hns_roce_dev *hr_dev)
+void hns_roce_exit(struct hns_roce_dev *hr_dev, bool bond_cleanup)
 {
 	hns_roce_unregister_debugfs(hr_dev);
-	hns_roce_unregister_device(hr_dev);
+	hns_roce_unregister_device(hr_dev, bond_cleanup);
 
 	if (hr_dev->hw->hw_exit)
 		hr_dev->hw->hw_exit(hr_dev);