Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) BBR TCP congestion control, from Neal Cardwell, Yuchung Cheng and
    co. at Google. https://lwn.net/Articles/701165/

 2) Do TCP Small Queues for retransmits, from Eric Dumazet.

 3) Support collect_md mode for all IPV4 and IPV6 tunnels, from Alexei
    Starovoitov.

 4) Allow cls_flower to classify packets in ip tunnels, from Amir Vadai.

 5) Support DSA tagging in older mv88e6xxx switches, from Andrew Lunn.

 6) Support GMAC protocol in iwlwifi mwm, from Ayala Beker.

 7) Support ndo_poll_controller in mlx5, from Calvin Owens.

 8) Move VRF processing to an output hook and allow l3mdev to be
    loopback, from David Ahern.

 9) Support SOCK_DESTROY for UDP sockets. Also from David Ahern.

10) Congestion control in RXRPC, from David Howells.

11) Support geneve RX offload in ixgbe, from Emil Tantilov.

12) When hitting pressure for new incoming TCP data SKBs, perform a
    partial rathern than a full purge of the OFO queue (which could be
    huge). From Eric Dumazet.

13) Convert XFRM state and policy lookups to RCU, from Florian Westphal.

14) Support RX network flow classification to igb, from Gangfeng Huang.

15) Hardware offloading of eBPF in nfp driver, from Jakub Kicinski.

16) New skbmod packet action, from Jamal Hadi Salim.

17) Remove some inefficiencies in snmp proc output, from Jia He.

18) Add FIB notifications to properly propagate route changes to
    hardware which is doing forwarding offloading. From Jiri Pirko.

19) New dsa driver for qca8xxx chips, from John Crispin.

20) Implement RFC7559 ipv6 router solicitation backoff, from Maciej
    Żenczykowski.

21) Add L3 mode to ipvlan, from Mahesh Bandewar.

22) Support 802.1ad in mlx4, from Moshe Shemesh.

23) Support hardware LRO in mediatek driver, from Nelson Chang.

24) Add TC offloading to mlx5, from Or Gerlitz.

25) Convert various drivers to ethtool ksettings interfaces, from
    Philippe Reynes.

26) TX max rate limiting for cxgb4, from Rahul Lakkireddy.

27) NAPI support for ath10k, from Rajkumar Manoharan.

28) Support XDP in mlx5, from Rana Shahout and Saeed Mahameed.

29) UDP replicast support in TIPC, from Richard Alpe.

30) Per-queue statistics for qed driver, from Sudarsana Reddy Kalluru.

31) Support BQL in thunderx driver, from Sunil Goutham.

32) TSO support in alx driver, from Tobias Regnery.

33) Add stream parser engine and use it in kcm.

34) Support async DHCP replies in ipconfig module, from Uwe
    Kleine-König.

35) DSA port fast aging for mv88e6xxx driver, from Vivien Didelot.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1715 commits)
  mlxsw: switchx2: Fix misuse of hard_header_len
  mlxsw: spectrum: Fix misuse of hard_header_len
  net/faraday: Stop NCSI device on shutdown
  net/ncsi: Introduce ncsi_stop_dev()
  net/ncsi: Rework the channel monitoring
  net/ncsi: Allow to extend NCSI request properties
  net/ncsi: Rework request index allocation
  net/ncsi: Don't probe on the reserved channel ID (0x1f)
  net/ncsi: Introduce NCSI_RESERVED_CHANNEL
  net/ncsi: Avoid unused-value build warning from ia64-linux-gcc
  net: Add netdev all_adj_list refcnt propagation to fix panic
  net: phy: Add Edge-rate driver for Microsemi PHYs.
  vmxnet3: Wake queue from reset work
  i40e: avoid NULL pointer dereference and recursive errors on early PCI error
  qed: Add RoCE ll2 & GSI support
  qed: Add support for memory registeration verbs
  qed: Add support for QP verbs
  qed: PD,PKEY and CQ verb support
  qed: Add support for RoCE hw init
  qede: Add qedr framework
  ...

1 files changed, 588 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
new file mode 100644
index 000000000000..55957246c0e8
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -0,0 +1,588 @@
+/*
+ * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/vport.h>
+#include "mlx5_core.h"
+
+enum {
+	MLX5_LAG_FLAG_BONDED = 1 << 0,
+};
+
+struct lag_func {
+	struct mlx5_core_dev *dev;
+	struct net_device    *netdev;
+};
+
+/* Used for collection of netdev event info. */
+struct lag_tracker {
+	enum   netdev_lag_tx_type           tx_type;
+	struct netdev_lag_lower_state_info  netdev_state[MLX5_MAX_PORTS];
+	bool is_bonded;
+};
+
+/* LAG data of a ConnectX card.
+ * It serves both its phys functions.
+ */
+struct mlx5_lag {
+	u8                        flags;
+	u8                        v2p_map[MLX5_MAX_PORTS];
+	struct lag_func           pf[MLX5_MAX_PORTS];
+	struct lag_tracker        tracker;
+	struct delayed_work       bond_work;
+	struct notifier_block     nb;
+};
+
+/* General purpose, use for short periods of time.
+ * Beware of lock dependencies (preferably, no locks should be acquired
+ * under it).
+ */
+static DEFINE_MUTEX(lag_mutex);
+
+static int mlx5_cmd_create_lag(struct mlx5_core_dev *dev, u8 remap_port1,
+			       u8 remap_port2)
+{
+	u32   in[MLX5_ST_SZ_DW(create_lag_in)]   = {0};
+	u32   out[MLX5_ST_SZ_DW(create_lag_out)] = {0};
+	void *lag_ctx = MLX5_ADDR_OF(create_lag_in, in, ctx);
+
+	MLX5_SET(create_lag_in, in, opcode, MLX5_CMD_OP_CREATE_LAG);
+
+	MLX5_SET(lagc, lag_ctx, tx_remap_affinity_1, remap_port1);
+	MLX5_SET(lagc, lag_ctx, tx_remap_affinity_2, remap_port2);
+
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+
+static int mlx5_cmd_modify_lag(struct mlx5_core_dev *dev, u8 remap_port1,
+			       u8 remap_port2)
+{
+	u32   in[MLX5_ST_SZ_DW(modify_lag_in)]   = {0};
+	u32   out[MLX5_ST_SZ_DW(modify_lag_out)] = {0};
+	void *lag_ctx = MLX5_ADDR_OF(modify_lag_in, in, ctx);
+
+	MLX5_SET(modify_lag_in, in, opcode, MLX5_CMD_OP_MODIFY_LAG);
+	MLX5_SET(modify_lag_in, in, field_select, 0x1);
+
+	MLX5_SET(lagc, lag_ctx, tx_remap_affinity_1, remap_port1);
+	MLX5_SET(lagc, lag_ctx, tx_remap_affinity_2, remap_port2);
+
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+
+static int mlx5_cmd_destroy_lag(struct mlx5_core_dev *dev)
+{
+	u32  in[MLX5_ST_SZ_DW(destroy_lag_in)]  = {0};
+	u32 out[MLX5_ST_SZ_DW(destroy_lag_out)] = {0};
+
+	MLX5_SET(destroy_lag_in, in, opcode, MLX5_CMD_OP_DESTROY_LAG);
+
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+
+int mlx5_cmd_create_vport_lag(struct mlx5_core_dev *dev)
+{
+	u32  in[MLX5_ST_SZ_DW(create_vport_lag_in)]  = {0};
+	u32 out[MLX5_ST_SZ_DW(create_vport_lag_out)] = {0};
+
+	MLX5_SET(create_vport_lag_in, in, opcode, MLX5_CMD_OP_CREATE_VPORT_LAG);
+
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+EXPORT_SYMBOL(mlx5_cmd_create_vport_lag);
+
+int mlx5_cmd_destroy_vport_lag(struct mlx5_core_dev *dev)
+{
+	u32  in[MLX5_ST_SZ_DW(destroy_vport_lag_in)]  = {0};
+	u32 out[MLX5_ST_SZ_DW(destroy_vport_lag_out)] = {0};
+
+	MLX5_SET(destroy_vport_lag_in, in, opcode, MLX5_CMD_OP_DESTROY_VPORT_LAG);
+
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+EXPORT_SYMBOL(mlx5_cmd_destroy_vport_lag);
+
+static struct mlx5_lag *mlx5_lag_dev_get(struct mlx5_core_dev *dev)
+{
+	return dev->priv.lag;
+}
+
+static int mlx5_lag_dev_get_netdev_idx(struct mlx5_lag *ldev,
+				       struct net_device *ndev)
+{
+	int i;
+
+	for (i = 0; i < MLX5_MAX_PORTS; i++)
+		if (ldev->pf[i].netdev == ndev)
+			return i;
+
+	return -1;
+}
+
+static bool mlx5_lag_is_bonded(struct mlx5_lag *ldev)
+{
+	return !!(ldev->flags & MLX5_LAG_FLAG_BONDED);
+}
+
+static void mlx5_infer_tx_affinity_mapping(struct lag_tracker *tracker,
+					   u8 *port1, u8 *port2)
+{
+	if (tracker->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
+		if (tracker->netdev_state[0].tx_enabled) {
+			*port1 = 1;
+			*port2 = 1;
+		} else {
+			*port1 = 2;
+			*port2 = 2;
+		}
+	} else {
+		*port1 = 1;
+		*port2 = 2;
+		if (!tracker->netdev_state[0].link_up)
+			*port1 = 2;
+		else if (!tracker->netdev_state[1].link_up)
+			*port2 = 1;
+	}
+}
+
+static void mlx5_activate_lag(struct mlx5_lag *ldev,
+			      struct lag_tracker *tracker)
+{
+	struct mlx5_core_dev *dev0 = ldev->pf[0].dev;
+	int err;
+
+	ldev->flags |= MLX5_LAG_FLAG_BONDED;
+
+	mlx5_infer_tx_affinity_mapping(tracker, &ldev->v2p_map[0],
+				       &ldev->v2p_map[1]);
+
+	err = mlx5_cmd_create_lag(dev0, ldev->v2p_map[0], ldev->v2p_map[1]);
+	if (err)
+		mlx5_core_err(dev0,
+			      "Failed to create LAG (%d)\n",
+			      err);
+}
+
+static void mlx5_deactivate_lag(struct mlx5_lag *ldev)
+{
+	struct mlx5_core_dev *dev0 = ldev->pf[0].dev;
+	int err;
+
+	ldev->flags &= ~MLX5_LAG_FLAG_BONDED;
+
+	err = mlx5_cmd_destroy_lag(dev0);
+	if (err)
+		mlx5_core_err(dev0,
+			      "Failed to destroy LAG (%d)\n",
+			      err);
+}
+
+static void mlx5_do_bond(struct mlx5_lag *ldev)
+{
+	struct mlx5_core_dev *dev0 = ldev->pf[0].dev;
+	struct mlx5_core_dev *dev1 = ldev->pf[1].dev;
+	struct lag_tracker tracker;
+	u8 v2p_port1, v2p_port2;
+	int i, err;
+
+	if (!dev0 || !dev1)
+		return;
+
+	mutex_lock(&lag_mutex);
+	tracker = ldev->tracker;
+	mutex_unlock(&lag_mutex);
+
+	if (tracker.is_bonded && !mlx5_lag_is_bonded(ldev)) {
+		if (mlx5_sriov_is_enabled(dev0) ||
+		    mlx5_sriov_is_enabled(dev1)) {
+			mlx5_core_warn(dev0, "LAG is not supported with SRIOV");
+			return;
+		}
+
+		for (i = 0; i < MLX5_MAX_PORTS; i++)
+			mlx5_remove_dev_by_protocol(ldev->pf[i].dev,
+						    MLX5_INTERFACE_PROTOCOL_IB);
+
+		mlx5_activate_lag(ldev, &tracker);
+
+		mlx5_add_dev_by_protocol(dev0, MLX5_INTERFACE_PROTOCOL_IB);
+		mlx5_nic_vport_enable_roce(dev1);
+	} else if (tracker.is_bonded && mlx5_lag_is_bonded(ldev)) {
+		mlx5_infer_tx_affinity_mapping(&tracker, &v2p_port1,
+					       &v2p_port2);
+
+		if ((v2p_port1 != ldev->v2p_map[0]) ||
+		    (v2p_port2 != ldev->v2p_map[1])) {
+			ldev->v2p_map[0] = v2p_port1;
+			ldev->v2p_map[1] = v2p_port2;
+
+			err = mlx5_cmd_modify_lag(dev0, v2p_port1, v2p_port2);
+			if (err)
+				mlx5_core_err(dev0,
+					      "Failed to modify LAG (%d)\n",
+					      err);
+		}
+	} else if (!tracker.is_bonded && mlx5_lag_is_bonded(ldev)) {
+		mlx5_remove_dev_by_protocol(dev0, MLX5_INTERFACE_PROTOCOL_IB);
+		mlx5_nic_vport_disable_roce(dev1);
+
+		mlx5_deactivate_lag(ldev);
+
+		for (i = 0; i < MLX5_MAX_PORTS; i++)
+			if (ldev->pf[i].dev)
+				mlx5_add_dev_by_protocol(ldev->pf[i].dev,
+							 MLX5_INTERFACE_PROTOCOL_IB);
+	}
+}
+
+static void mlx5_queue_bond_work(struct mlx5_lag *ldev, unsigned long delay)
+{
+	schedule_delayed_work(&ldev->bond_work, delay);
+}
+
+static void mlx5_do_bond_work(struct work_struct *work)
+{
+	struct delayed_work *delayed_work = to_delayed_work(work);
+	struct mlx5_lag *ldev = container_of(delayed_work, struct mlx5_lag,
+					     bond_work);
+	int status;
+
+	status = mlx5_dev_list_trylock();
+	if (!status) {
+		/* 1 sec delay. */
+		mlx5_queue_bond_work(ldev, HZ);
+		return;
+	}
+
+	mlx5_do_bond(ldev);
+	mlx5_dev_list_unlock();
+}
+
+static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev,
+					 struct lag_tracker *tracker,
+					 struct net_device *ndev,
+					 struct netdev_notifier_changeupper_info *info)
+{
+	struct net_device *upper = info->upper_dev, *ndev_tmp;
+	struct netdev_lag_upper_info *lag_upper_info;
+	bool is_bonded;
+	int bond_status = 0;
+	int num_slaves = 0;
+	int idx;
+
+	if (!netif_is_lag_master(upper))
+		return 0;
+
+	lag_upper_info = info->upper_info;
+
+	/* The event may still be of interest if the slave does not belong to
+	 * us, but is enslaved to a master which has one or more of our netdevs
+	 * as slaves (e.g., if a new slave is added to a master that bonds two
+	 * of our netdevs, we should unbond).
+	 */
+	rcu_read_lock();
+	for_each_netdev_in_bond_rcu(upper, ndev_tmp) {
+		idx = mlx5_lag_dev_get_netdev_idx(ldev, ndev_tmp);
+		if (idx > -1)
+			bond_status |= (1 << idx);
+
+		num_slaves++;
+	}
+	rcu_read_unlock();
+
+	/* None of this lagdev's netdevs are slaves of this master. */
+	if (!(bond_status & 0x3))
+		return 0;
+
+	if (lag_upper_info)
+		tracker->tx_type = lag_upper_info->tx_type;
+
+	/* Determine bonding status:
+	 * A device is considered bonded if both its physical ports are slaves
+	 * of the same lag master, and only them.
+	 * Lag mode must be activebackup or hash.
+	 */
+	is_bonded = (num_slaves == MLX5_MAX_PORTS) &&
+		    (bond_status == 0x3) &&
+		    ((tracker->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) ||
+		     (tracker->tx_type == NETDEV_LAG_TX_TYPE_HASH));
+
+	if (tracker->is_bonded != is_bonded) {
+		tracker->is_bonded = is_bonded;
+		return 1;
+	}
+
+	return 0;
+}
+
+static int mlx5_handle_changelowerstate_event(struct mlx5_lag *ldev,
+					      struct lag_tracker *tracker,
+					      struct net_device *ndev,
+					      struct netdev_notifier_changelowerstate_info *info)
+{
+	struct netdev_lag_lower_state_info *lag_lower_info;
+	int idx;
+
+	if (!netif_is_lag_port(ndev))
+		return 0;
+
+	idx = mlx5_lag_dev_get_netdev_idx(ldev, ndev);
+	if (idx == -1)
+		return 0;
+
+	/* This information is used to determine virtual to physical
+	 * port mapping.
+	 */
+	lag_lower_info = info->lower_state_info;
+	if (!lag_lower_info)
+		return 0;
+
+	tracker->netdev_state[idx] = *lag_lower_info;
+
+	return 1;
+}
+
+static int mlx5_lag_netdev_event(struct notifier_block *this,
+				 unsigned long event, void *ptr)
+{
+	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
+	struct lag_tracker tracker;
+	struct mlx5_lag *ldev;
+	int changed = 0;
+
+	if (!net_eq(dev_net(ndev), &init_net))
+		return NOTIFY_DONE;
+
+	if ((event != NETDEV_CHANGEUPPER) && (event != NETDEV_CHANGELOWERSTATE))
+		return NOTIFY_DONE;
+
+	ldev    = container_of(this, struct mlx5_lag, nb);
+	tracker = ldev->tracker;
+
+	switch (event) {
+	case NETDEV_CHANGEUPPER:
+		changed = mlx5_handle_changeupper_event(ldev, &tracker, ndev,
+							ptr);
+		break;
+	case NETDEV_CHANGELOWERSTATE:
+		changed = mlx5_handle_changelowerstate_event(ldev, &tracker,
+							     ndev, ptr);
+		break;
+	}
+
+	mutex_lock(&lag_mutex);
+	ldev->tracker = tracker;
+	mutex_unlock(&lag_mutex);
+
+	if (changed)
+		mlx5_queue_bond_work(ldev, 0);
+
+	return NOTIFY_DONE;
+}
+
+static struct mlx5_lag *mlx5_lag_dev_alloc(void)
+{
+	struct mlx5_lag *ldev;
+
+	ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
+	if (!ldev)
+		return NULL;
+
+	INIT_DELAYED_WORK(&ldev->bond_work, mlx5_do_bond_work);
+
+	return ldev;
+}
+
+static void mlx5_lag_dev_free(struct mlx5_lag *ldev)
+{
+	kfree(ldev);
+}
+
+static void mlx5_lag_dev_add_pf(struct mlx5_lag *ldev,
+				struct mlx5_core_dev *dev,
+				struct net_device *netdev)
+{
+	unsigned int fn = PCI_FUNC(dev->pdev->devfn);
+
+	if (fn >= MLX5_MAX_PORTS)
+		return;
+
+	mutex_lock(&lag_mutex);
+	ldev->pf[fn].dev    = dev;
+	ldev->pf[fn].netdev = netdev;
+	ldev->tracker.netdev_state[fn].link_up = 0;
+	ldev->tracker.netdev_state[fn].tx_enabled = 0;
+
+	dev->priv.lag = ldev;
+	mutex_unlock(&lag_mutex);
+}
+
+static void mlx5_lag_dev_remove_pf(struct mlx5_lag *ldev,
+				   struct mlx5_core_dev *dev)
+{
+	int i;
+
+	for (i = 0; i < MLX5_MAX_PORTS; i++)
+		if (ldev->pf[i].dev == dev)
+			break;
+
+	if (i == MLX5_MAX_PORTS)
+		return;
+
+	mutex_lock(&lag_mutex);
+	memset(&ldev->pf[i], 0, sizeof(*ldev->pf));
+
+	dev->priv.lag = NULL;
+	mutex_unlock(&lag_mutex);
+}
+
+
+/* Must be called with intf_mutex held */
+void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev)
+{
+	struct mlx5_lag *ldev = NULL;
+	struct mlx5_core_dev *tmp_dev;
+
+	if (!MLX5_CAP_GEN(dev, vport_group_manager) ||
+	    !MLX5_CAP_GEN(dev, lag_master) ||
+	    (MLX5_CAP_GEN(dev, num_lag_ports) != MLX5_MAX_PORTS))
+		return;
+
+	tmp_dev = mlx5_get_next_phys_dev(dev);
+	if (tmp_dev)
+		ldev = tmp_dev->priv.lag;
+
+	if (!ldev) {
+		ldev = mlx5_lag_dev_alloc();
+		if (!ldev) {
+			mlx5_core_err(dev, "Failed to alloc lag dev\n");
+			return;
+		}
+	}
+
+	mlx5_lag_dev_add_pf(ldev, dev, netdev);
+
+	if (!ldev->nb.notifier_call) {
+		ldev->nb.notifier_call = mlx5_lag_netdev_event;
+		if (register_netdevice_notifier(&ldev->nb)) {
+			ldev->nb.notifier_call = NULL;
+			mlx5_core_err(dev, "Failed to register LAG netdev notifier\n");
+		}
+	}
+}
+
+/* Must be called with intf_mutex held */
+void mlx5_lag_remove(struct mlx5_core_dev *dev)
+{
+	struct mlx5_lag *ldev;
+	int i;
+
+	ldev = mlx5_lag_dev_get(dev);
+	if (!ldev)
+		return;
+
+	if (mlx5_lag_is_bonded(ldev))
+		mlx5_deactivate_lag(ldev);
+
+	mlx5_lag_dev_remove_pf(ldev, dev);
+
+	for (i = 0; i < MLX5_MAX_PORTS; i++)
+		if (ldev->pf[i].dev)
+			break;
+
+	if (i == MLX5_MAX_PORTS) {
+		if (ldev->nb.notifier_call)
+			unregister_netdevice_notifier(&ldev->nb);
+		cancel_delayed_work_sync(&ldev->bond_work);
+		mlx5_lag_dev_free(ldev);
+	}
+}
+
+bool mlx5_lag_is_active(struct mlx5_core_dev *dev)
+{
+	struct mlx5_lag *ldev;
+	bool res;
+
+	mutex_lock(&lag_mutex);
+	ldev = mlx5_lag_dev_get(dev);
+	res  = ldev && mlx5_lag_is_bonded(ldev);
+	mutex_unlock(&lag_mutex);
+
+	return res;
+}
+EXPORT_SYMBOL(mlx5_lag_is_active);
+
+struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev)
+{
+	struct net_device *ndev = NULL;
+	struct mlx5_lag *ldev;
+
+	mutex_lock(&lag_mutex);
+	ldev = mlx5_lag_dev_get(dev);
+
+	if (!(ldev && mlx5_lag_is_bonded(ldev)))
+		goto unlock;
+
+	if (ldev->tracker.tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
+		ndev = ldev->tracker.netdev_state[0].tx_enabled ?
+		       ldev->pf[0].netdev : ldev->pf[1].netdev;
+	} else {
+		ndev = ldev->pf[0].netdev;
+	}
+	if (ndev)
+		dev_hold(ndev);
+
+unlock:
+	mutex_unlock(&lag_mutex);
+
+	return ndev;
+}
+EXPORT_SYMBOL(mlx5_lag_get_roce_netdev);
+
+bool mlx5_lag_intf_add(struct mlx5_interface *intf, struct mlx5_priv *priv)
+{
+	struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev,
+						 priv);
+	struct mlx5_lag *ldev;
+
+	if (intf->protocol != MLX5_INTERFACE_PROTOCOL_IB)
+		return true;
+
+	ldev = mlx5_lag_dev_get(dev);
+	if (!ldev || !mlx5_lag_is_bonded(ldev) || ldev->pf[0].dev == dev)
+		return true;
+
+	/* If bonded, we do not add an IB device for PF1. */
+	return false;
+}
+