7 files changed, 517 insertions, 12 deletions

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 704680471567..cd2ff5f9518a 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -449,7 +449,7 @@ static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
 {
 	struct c4iw_ep *ep = handle;
 
-	printk(KERN_ERR MOD "ARP failure duing connect\n");
+	printk(KERN_ERR MOD "ARP failure during connect\n");
 	kfree_skb(skb);
 	connect_reply_upcall(ep, -EHOSTUNREACH);
 	state_set(&ep->com, DEAD);
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 870e56b6b25f..26833bfa639b 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -40,6 +40,7 @@
 #include <linux/gfp.h>
 #include <rdma/ib_pma.h>
 
+#include <linux/mlx4/driver.h>
 #include "mlx4_ib.h"
 
 enum {
@@ -606,8 +607,8 @@ static int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port,
 			struct ib_mad *mad)
 {
 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
-	int err;
-	int slave;
+	int err, other_port;
+	int slave = -1;
 	u8 *slave_id;
 	int is_eth = 0;
 
@@ -625,7 +626,17 @@ static int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port,
 			mlx4_ib_warn(ibdev, "RoCE mgmt class is not CM\n");
 			return -EINVAL;
 		}
-		if (mlx4_get_slave_from_roce_gid(dev->dev, port, grh->dgid.raw, &slave)) {
+		err = mlx4_get_slave_from_roce_gid(dev->dev, port, grh->dgid.raw, &slave);
+		if (err && mlx4_is_mf_bonded(dev->dev)) {
+			other_port = (port == 1) ? 2 : 1;
+			err = mlx4_get_slave_from_roce_gid(dev->dev, other_port, grh->dgid.raw, &slave);
+			if (!err) {
+				port = other_port;
+				pr_debug("resolved slave %d from gid %pI6 wire port %d other %d\n",
+					 slave, grh->dgid.raw, port, other_port);
+			}
+		}
+		if (err) {
 			mlx4_ib_warn(ibdev, "failed matching grh\n");
 			return -ENOENT;
 		}
diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c
index 68d5a5fda271..0597f3eef5d0 100644
--- a/drivers/infiniband/hw/mlx4/srq.c
+++ b/drivers/infiniband/hw/mlx4/srq.c
@@ -287,7 +287,7 @@ int mlx4_ib_destroy_srq(struct ib_srq *srq)
 		mlx4_ib_db_unmap_user(to_mucontext(srq->uobject->context), &msrq->db);
 		ib_umem_release(msrq->umem);
 	} else {
-		kfree(msrq->wrid);
+		kvfree(msrq->wrid);
 		mlx4_buf_free(dev->dev, msrq->msrq.max << msrq->msrq.wqe_shift,
 			      &msrq->buf);
 		mlx4_db_free(dev->dev, &msrq->db);
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 7ddc790b1819..fd1de31e0611 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -770,7 +770,7 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
 	int uninitialized_var(index);
 	int uninitialized_var(inlen);
 	int cqe_size;
-	int irqn;
+	unsigned int irqn;
 	int eqn;
 	int err;
 
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index a55bf05c8522..ec737e2287fe 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -45,6 +45,9 @@
 #include <linux/mlx5/vport.h>
 #include <rdma/ib_smi.h>
 #include <rdma/ib_umem.h>
+#include <linux/in.h>
+#include <linux/etherdevice.h>
+#include <linux/mlx5/fs.h>
 #include "user.h"
 #include "mlx5_ib.h"
 
@@ -1153,6 +1156,457 @@ static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
 	return 0;
 }
 
+static bool outer_header_zero(u32 *match_criteria)
+{
+	int size = MLX5_ST_SZ_BYTES(fte_match_param);
+	char *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_criteria,
+					     outer_headers);
+
+	return outer_headers_c[0] == 0 && !memcmp(outer_headers_c,
+						  outer_headers_c + 1,
+						  size - 1);
+}
+
+static int parse_flow_attr(u32 *match_c, u32 *match_v,
+			   union ib_flow_spec *ib_spec)
+{
+	void *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
+					     outer_headers);
+	void *outer_headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
+					     outer_headers);
+	switch (ib_spec->type) {
+	case IB_FLOW_SPEC_ETH:
+		if (ib_spec->size != sizeof(ib_spec->eth))
+			return -EINVAL;
+
+		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
+					     dmac_47_16),
+				ib_spec->eth.mask.dst_mac);
+		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
+					     dmac_47_16),
+				ib_spec->eth.val.dst_mac);
+
+		if (ib_spec->eth.mask.vlan_tag) {
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+				 vlan_tag, 1);
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+				 vlan_tag, 1);
+
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+				 first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+				 first_vid, ntohs(ib_spec->eth.val.vlan_tag));
+
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+				 first_cfi,
+				 ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+				 first_cfi,
+				 ntohs(ib_spec->eth.val.vlan_tag) >> 12);
+
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+				 first_prio,
+				 ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
+			MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+				 first_prio,
+				 ntohs(ib_spec->eth.val.vlan_tag) >> 13);
+		}
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+			 ethertype, ntohs(ib_spec->eth.mask.ether_type));
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+			 ethertype, ntohs(ib_spec->eth.val.ether_type));
+		break;
+	case IB_FLOW_SPEC_IPV4:
+		if (ib_spec->size != sizeof(ib_spec->ipv4))
+			return -EINVAL;
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
+			 ethertype, 0xffff);
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
+			 ethertype, ETH_P_IP);
+
+		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
+				    src_ipv4_src_ipv6.ipv4_layout.ipv4),
+		       &ib_spec->ipv4.mask.src_ip,
+		       sizeof(ib_spec->ipv4.mask.src_ip));
+		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
+				    src_ipv4_src_ipv6.ipv4_layout.ipv4),
+		       &ib_spec->ipv4.val.src_ip,
+		       sizeof(ib_spec->ipv4.val.src_ip));
+		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
+				    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
+		       &ib_spec->ipv4.mask.dst_ip,
+		       sizeof(ib_spec->ipv4.mask.dst_ip));
+		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
+				    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
+		       &ib_spec->ipv4.val.dst_ip,
+		       sizeof(ib_spec->ipv4.val.dst_ip));
+		break;
+	case IB_FLOW_SPEC_TCP:
+		if (ib_spec->size != sizeof(ib_spec->tcp_udp))
+			return -EINVAL;
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
+			 0xff);
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
+			 IPPROTO_TCP);
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport,
+			 ntohs(ib_spec->tcp_udp.mask.src_port));
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_sport,
+			 ntohs(ib_spec->tcp_udp.val.src_port));
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport,
+			 ntohs(ib_spec->tcp_udp.mask.dst_port));
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_dport,
+			 ntohs(ib_spec->tcp_udp.val.dst_port));
+		break;
+	case IB_FLOW_SPEC_UDP:
+		if (ib_spec->size != sizeof(ib_spec->tcp_udp))
+			return -EINVAL;
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
+			 0xff);
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
+			 IPPROTO_UDP);
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_sport,
+			 ntohs(ib_spec->tcp_udp.mask.src_port));
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_sport,
+			 ntohs(ib_spec->tcp_udp.val.src_port));
+
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_dport,
+			 ntohs(ib_spec->tcp_udp.mask.dst_port));
+		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_dport,
+			 ntohs(ib_spec->tcp_udp.val.dst_port));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* If a flow could catch both multicast and unicast packets,
+ * it won't fall into the multicast flow steering table and this rule
+ * could steal other multicast packets.
+ */
+static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr)
+{
+	struct ib_flow_spec_eth *eth_spec;
+
+	if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
+	    ib_attr->size < sizeof(struct ib_flow_attr) +
+	    sizeof(struct ib_flow_spec_eth) ||
+	    ib_attr->num_of_specs < 1)
+		return false;
+
+	eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1);
+	if (eth_spec->type != IB_FLOW_SPEC_ETH ||
+	    eth_spec->size != sizeof(*eth_spec))
+		return false;
+
+	return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
+	       is_multicast_ether_addr(eth_spec->val.dst_mac);
+}
+
+static bool is_valid_attr(struct ib_flow_attr *flow_attr)
+{
+	union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
+	bool has_ipv4_spec = false;
+	bool eth_type_ipv4 = true;
+	unsigned int spec_index;
+
+	/* Validate that ethertype is correct */
+	for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
+		if (ib_spec->type == IB_FLOW_SPEC_ETH &&
+		    ib_spec->eth.mask.ether_type) {
+			if (!((ib_spec->eth.mask.ether_type == htons(0xffff)) &&
+			      ib_spec->eth.val.ether_type == htons(ETH_P_IP)))
+				eth_type_ipv4 = false;
+		} else if (ib_spec->type == IB_FLOW_SPEC_IPV4) {
+			has_ipv4_spec = true;
+		}
+		ib_spec = (void *)ib_spec + ib_spec->size;
+	}
+	return !has_ipv4_spec || eth_type_ipv4;
+}
+
+static void put_flow_table(struct mlx5_ib_dev *dev,
+			   struct mlx5_ib_flow_prio *prio, bool ft_added)
+{
+	prio->refcount -= !!ft_added;
+	if (!prio->refcount) {
+		mlx5_destroy_flow_table(prio->flow_table);
+		prio->flow_table = NULL;
+	}
+}
+
+static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
+{
+	struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
+	struct mlx5_ib_flow_handler *handler = container_of(flow_id,
+							  struct mlx5_ib_flow_handler,
+							  ibflow);
+	struct mlx5_ib_flow_handler *iter, *tmp;
+
+	mutex_lock(&dev->flow_db.lock);
+
+	list_for_each_entry_safe(iter, tmp, &handler->list, list) {
+		mlx5_del_flow_rule(iter->rule);
+		list_del(&iter->list);
+		kfree(iter);
+	}
+
+	mlx5_del_flow_rule(handler->rule);
+	put_flow_table(dev, &dev->flow_db.prios[handler->prio], true);
+	mutex_unlock(&dev->flow_db.lock);
+
+	kfree(handler);
+
+	return 0;
+}
+
+#define MLX5_FS_MAX_TYPES	 10
+#define MLX5_FS_MAX_ENTRIES	 32000UL
+static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
+						struct ib_flow_attr *flow_attr)
+{
+	struct mlx5_flow_namespace *ns = NULL;
+	struct mlx5_ib_flow_prio *prio;
+	struct mlx5_flow_table *ft;
+	int num_entries;
+	int num_groups;
+	int priority;
+	int err = 0;
+
+	if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
+		if (flow_is_multicast_only(flow_attr))
+			priority = MLX5_IB_FLOW_MCAST_PRIO;
+		else
+			priority = flow_attr->priority;
+		ns = mlx5_get_flow_namespace(dev->mdev,
+					     MLX5_FLOW_NAMESPACE_BYPASS);
+		num_entries = MLX5_FS_MAX_ENTRIES;
+		num_groups = MLX5_FS_MAX_TYPES;
+		prio = &dev->flow_db.prios[priority];
+	} else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
+		   flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
+		ns = mlx5_get_flow_namespace(dev->mdev,
+					     MLX5_FLOW_NAMESPACE_LEFTOVERS);
+		build_leftovers_ft_param(&priority,
+					 &num_entries,
+					 &num_groups);
+		prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
+	}
+
+	if (!ns)
+		return ERR_PTR(-ENOTSUPP);
+
+	ft = prio->flow_table;
+	if (!ft) {
+		ft = mlx5_create_auto_grouped_flow_table(ns, priority,
+							 num_entries,
+							 num_groups);
+
+		if (!IS_ERR(ft)) {
+			prio->refcount = 0;
+			prio->flow_table = ft;
+		} else {
+			err = PTR_ERR(ft);
+		}
+	}
+
+	return err ? ERR_PTR(err) : prio;
+}
+
+static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
+						     struct mlx5_ib_flow_prio *ft_prio,
+						     struct ib_flow_attr *flow_attr,
+						     struct mlx5_flow_destination *dst)
+{
+	struct mlx5_flow_table	*ft = ft_prio->flow_table;
+	struct mlx5_ib_flow_handler *handler;
+	void *ib_flow = flow_attr + 1;
+	u8 match_criteria_enable = 0;
+	unsigned int spec_index;
+	u32 *match_c;
+	u32 *match_v;
+	int err = 0;
+
+	if (!is_valid_attr(flow_attr))
+		return ERR_PTR(-EINVAL);
+
+	match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
+	match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
+	handler = kzalloc(sizeof(*handler), GFP_KERNEL);
+	if (!handler || !match_c || !match_v) {
+		err = -ENOMEM;
+		goto free;
+	}
+
+	INIT_LIST_HEAD(&handler->list);
+
+	for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
+		err = parse_flow_attr(match_c, match_v, ib_flow);
+		if (err < 0)
+			goto free;
+
+		ib_flow += ((union ib_flow_spec *)ib_flow)->size;
+	}
+
+	/* Outer header support only */
+	match_criteria_enable = (!outer_header_zero(match_c)) << 0;
+	handler->rule = mlx5_add_flow_rule(ft, match_criteria_enable,
+					   match_c, match_v,
+					   MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
+					   MLX5_FS_DEFAULT_FLOW_TAG,
+					   dst);
+
+	if (IS_ERR(handler->rule)) {
+		err = PTR_ERR(handler->rule);
+		goto free;
+	}
+
+	handler->prio = ft_prio - dev->flow_db.prios;
+
+	ft_prio->flow_table = ft;
+free:
+	if (err)
+		kfree(handler);
+	kfree(match_c);
+	kfree(match_v);
+	return err ? ERR_PTR(err) : handler;
+}
+
+enum {
+	LEFTOVERS_MC,
+	LEFTOVERS_UC,
+};
+
+static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
+							  struct mlx5_ib_flow_prio *ft_prio,
+							  struct ib_flow_attr *flow_attr,
+							  struct mlx5_flow_destination *dst)
+{
+	struct mlx5_ib_flow_handler *handler_ucast = NULL;
+	struct mlx5_ib_flow_handler *handler = NULL;
+
+	static struct {
+		struct ib_flow_attr	flow_attr;
+		struct ib_flow_spec_eth eth_flow;
+	} leftovers_specs[] = {
+		[LEFTOVERS_MC] = {
+			.flow_attr = {
+				.num_of_specs = 1,
+				.size = sizeof(leftovers_specs[0])
+			},
+			.eth_flow = {
+				.type = IB_FLOW_SPEC_ETH,
+				.size = sizeof(struct ib_flow_spec_eth),
+				.mask = {.dst_mac = {0x1} },
+				.val =  {.dst_mac = {0x1} }
+			}
+		},
+		[LEFTOVERS_UC] = {
+			.flow_attr = {
+				.num_of_specs = 1,
+				.size = sizeof(leftovers_specs[0])
+			},
+			.eth_flow = {
+				.type = IB_FLOW_SPEC_ETH,
+				.size = sizeof(struct ib_flow_spec_eth),
+				.mask = {.dst_mac = {0x1} },
+				.val = {.dst_mac = {} }
+			}
+		}
+	};
+
+	handler = create_flow_rule(dev, ft_prio,
+				   &leftovers_specs[LEFTOVERS_MC].flow_attr,
+				   dst);
+	if (!IS_ERR(handler) &&
+	    flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
+		handler_ucast = create_flow_rule(dev, ft_prio,
+						 &leftovers_specs[LEFTOVERS_UC].flow_attr,
+						 dst);
+		if (IS_ERR(handler_ucast)) {
+			kfree(handler);
+			handler = handler_ucast;
+		} else {
+			list_add(&handler_ucast->list, &handler->list);
+		}
+	}
+
+	return handler;
+}
+
+static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
+					   struct ib_flow_attr *flow_attr,
+					   int domain)
+{
+	struct mlx5_ib_dev *dev = to_mdev(qp->device);
+	struct mlx5_ib_flow_handler *handler = NULL;
+	struct mlx5_flow_destination *dst = NULL;
+	struct mlx5_ib_flow_prio *ft_prio;
+	int err;
+
+	if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
+		return ERR_PTR(-ENOSPC);
+
+	if (domain != IB_FLOW_DOMAIN_USER ||
+	    flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) ||
+	    flow_attr->flags)
+		return ERR_PTR(-EINVAL);
+
+	dst = kzalloc(sizeof(*dst), GFP_KERNEL);
+	if (!dst)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_lock(&dev->flow_db.lock);
+
+	ft_prio = get_flow_table(dev, flow_attr);
+	if (IS_ERR(ft_prio)) {
+		err = PTR_ERR(ft_prio);
+		goto unlock;
+	}
+
+	dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
+	dst->tir_num = to_mqp(qp)->raw_packet_qp.rq.tirn;
+
+	if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
+		handler = create_flow_rule(dev, ft_prio, flow_attr,
+					   dst);
+	} else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
+		   flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
+		handler = create_leftovers_rule(dev, ft_prio, flow_attr,
+						dst);
+	} else {
+		err = -EINVAL;
+		goto destroy_ft;
+	}
+
+	if (IS_ERR(handler)) {
+		err = PTR_ERR(handler);
+		handler = NULL;
+		goto destroy_ft;
+	}
+
+	ft_prio->refcount++;
+	mutex_unlock(&dev->flow_db.lock);
+	kfree(dst);
+
+	return &handler->ibflow;
+
+destroy_ft:
+	put_flow_table(dev, ft_prio, false);
+unlock:
+	mutex_unlock(&dev->flow_db.lock);
+	kfree(dst);
+	kfree(handler);
+	return ERR_PTR(err);
+}
+
 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 {
 	struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
@@ -1819,10 +2273,19 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 			(1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
 	}
 
+	if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) ==
+	    IB_LINK_LAYER_ETHERNET) {
+		dev->ib_dev.create_flow	= mlx5_ib_create_flow;
+		dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
+		dev->ib_dev.uverbs_ex_cmd_mask |=
+			(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
+			(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
+	}
 	err = init_node_data(dev);
 	if (err)
 		goto err_dealloc;
 
+	mutex_init(&dev->flow_db.lock);
 	mutex_init(&dev->cap_mask_mutex);
 
 	if (ll == IB_LINK_LAYER_ETHERNET) {
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index d475f83c295b..d2b9737baa36 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -125,6 +125,36 @@ struct mlx5_ib_pd {
 	u32			pdn;
 };
 
+#define MLX5_IB_FLOW_MCAST_PRIO		(MLX5_BY_PASS_NUM_PRIOS - 1)
+#define MLX5_IB_FLOW_LAST_PRIO		(MLX5_IB_FLOW_MCAST_PRIO - 1)
+#if (MLX5_IB_FLOW_LAST_PRIO <= 0)
+#error "Invalid number of bypass priorities"
+#endif
+#define MLX5_IB_FLOW_LEFTOVERS_PRIO	(MLX5_IB_FLOW_MCAST_PRIO + 1)
+
+#define MLX5_IB_NUM_FLOW_FT		(MLX5_IB_FLOW_LEFTOVERS_PRIO + 1)
+struct mlx5_ib_flow_prio {
+	struct mlx5_flow_table		*flow_table;
+	unsigned int			refcount;
+};
+
+struct mlx5_ib_flow_handler {
+	struct list_head		list;
+	struct ib_flow			ibflow;
+	unsigned int			prio;
+	struct mlx5_flow_rule	*rule;
+};
+
+struct mlx5_ib_flow_db {
+	struct mlx5_ib_flow_prio	prios[MLX5_IB_NUM_FLOW_FT];
+	/* Protect flow steering bypass flow tables
+	 * when add/del flow rules.
+	 * only single add/removal of flow steering rule could be done
+	 * simultaneously.
+	 */
+	struct mutex			lock;
+};
+
 /* Use macros here so that don't have to duplicate
  * enum ib_send_flags and enum ib_qp_type for low-level driver
  */
@@ -500,6 +530,7 @@ struct mlx5_ib_dev {
 	 */
 	struct srcu_struct      mr_srcu;
 #endif
+	struct mlx5_ib_flow_db	flow_db;
 };
 
 static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c
index 13ef22bd9459..fcdf37913a26 100644
--- a/drivers/infiniband/hw/qib/qib_fs.c
+++ b/drivers/infiniband/hw/qib/qib_fs.c
@@ -89,14 +89,14 @@ static int create_file(const char *name, umode_t mode,
 {
 	int error;
 
-	mutex_lock(&d_inode(parent)->i_mutex);
+	inode_lock(d_inode(parent));
 	*dentry = lookup_one_len(name, parent, strlen(name));
 	if (!IS_ERR(*dentry))
 		error = qibfs_mknod(d_inode(parent), *dentry,
 				    mode, fops, data);
 	else
 		error = PTR_ERR(*dentry);
-	mutex_unlock(&d_inode(parent)->i_mutex);
+	inode_unlock(d_inode(parent));
 
 	return error;
 }
@@ -481,7 +481,7 @@ static int remove_device_files(struct super_block *sb,
 	int ret, i;
 
 	root = dget(sb->s_root);
-	mutex_lock(&d_inode(root)->i_mutex);
+	inode_lock(d_inode(root));
 	snprintf(unit, sizeof(unit), "%u", dd->unit);
 	dir = lookup_one_len(unit, root, strlen(unit));
 
@@ -491,7 +491,7 @@ static int remove_device_files(struct super_block *sb,
 		goto bail;
 	}
 
-	mutex_lock(&d_inode(dir)->i_mutex);
+	inode_lock(d_inode(dir));
 	remove_file(dir, "counters");
 	remove_file(dir, "counter_names");
 	remove_file(dir, "portcounter_names");
@@ -506,13 +506,13 @@ static int remove_device_files(struct super_block *sb,
 		}
 	}
 	remove_file(dir, "flash");
-	mutex_unlock(&d_inode(dir)->i_mutex);
+	inode_unlock(d_inode(dir));
 	ret = simple_rmdir(d_inode(root), dir);
 	d_delete(dir);
 	dput(dir);
 
 bail:
-	mutex_unlock(&d_inode(root)->i_mutex);
+	inode_unlock(d_inode(root));
 	dput(root);
 	return ret;
 }