Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 818 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/qedr/qedr_iw_cm.c b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
new file mode 100644
index 000000000..a51fc6854
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
@@ -0,0 +1,818 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2017  QLogic Corporation
+ *
+ * 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 <net/ip.h>
+#include <net/ipv6.h>
+#include <net/udp.h>
+#include <net/addrconf.h>
+#include <net/route.h>
+#include <net/ip6_route.h>
+#include <net/flow.h>
+#include "qedr.h"
+#include "qedr_iw_cm.h"
+
+static inline void
+qedr_fill_sockaddr4(const struct qed_iwarp_cm_info *cm_info,
+		    struct iw_cm_event *event)
+{
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
+
+	laddr->sin_family = AF_INET;
+	raddr->sin_family = AF_INET;
+
+	laddr->sin_port = htons(cm_info->local_port);
+	raddr->sin_port = htons(cm_info->remote_port);
+
+	laddr->sin_addr.s_addr = htonl(cm_info->local_ip[0]);
+	raddr->sin_addr.s_addr = htonl(cm_info->remote_ip[0]);
+}
+
+static inline void
+qedr_fill_sockaddr6(const struct qed_iwarp_cm_info *cm_info,
+		    struct iw_cm_event *event)
+{
+	struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
+	struct sockaddr_in6 *raddr6 =
+	    (struct sockaddr_in6 *)&event->remote_addr;
+	int i;
+
+	laddr6->sin6_family = AF_INET6;
+	raddr6->sin6_family = AF_INET6;
+
+	laddr6->sin6_port = htons(cm_info->local_port);
+	raddr6->sin6_port = htons(cm_info->remote_port);
+
+	for (i = 0; i < 4; i++) {
+		laddr6->sin6_addr.in6_u.u6_addr32[i] =
+		    htonl(cm_info->local_ip[i]);
+		raddr6->sin6_addr.in6_u.u6_addr32[i] =
+		    htonl(cm_info->remote_ip[i]);
+	}
+}
+
+static void qedr_iw_free_qp(struct kref *ref)
+{
+	struct qedr_qp *qp = container_of(ref, struct qedr_qp, refcnt);
+
+	complete(&qp->qp_rel_comp);
+}
+
+static void
+qedr_iw_free_ep(struct kref *ref)
+{
+	struct qedr_iw_ep *ep = container_of(ref, struct qedr_iw_ep, refcnt);
+
+	if (ep->qp)
+		kref_put(&ep->qp->refcnt, qedr_iw_free_qp);
+
+	if (ep->cm_id)
+		ep->cm_id->rem_ref(ep->cm_id);
+
+	kfree(ep);
+}
+
+static void
+qedr_iw_mpa_request(void *context, struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_listener *listener = (struct qedr_iw_listener *)context;
+	struct qedr_dev *dev = listener->dev;
+	struct iw_cm_event event;
+	struct qedr_iw_ep *ep;
+
+	ep = kzalloc(sizeof(*ep), GFP_ATOMIC);
+	if (!ep)
+		return;
+
+	ep->dev = dev;
+	ep->qed_context = params->ep_context;
+	kref_init(&ep->refcnt);
+
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_CONNECT_REQUEST;
+	event.status = params->status;
+
+	if (!IS_ENABLED(CONFIG_IPV6) ||
+	    params->cm_info->ip_version == QED_TCP_IPV4)
+		qedr_fill_sockaddr4(params->cm_info, &event);
+	else
+		qedr_fill_sockaddr6(params->cm_info, &event);
+
+	event.provider_data = (void *)ep;
+	event.private_data = (void *)params->cm_info->private_data;
+	event.private_data_len = (u8)params->cm_info->private_data_len;
+	event.ord = params->cm_info->ord;
+	event.ird = params->cm_info->ird;
+
+	listener->cm_id->event_handler(listener->cm_id, &event);
+}
+
+static void
+qedr_iw_issue_event(void *context,
+		    struct qed_iwarp_cm_event_params *params,
+		    enum iw_cm_event_type event_type)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct iw_cm_event event;
+
+	memset(&event, 0, sizeof(event));
+	event.status = params->status;
+	event.event = event_type;
+
+	if (params->cm_info) {
+		event.ird = params->cm_info->ird;
+		event.ord = params->cm_info->ord;
+		/* Only connect_request and reply have valid private data
+		 * the rest of the events this may be left overs from
+		 * connection establishment. CONNECT_REQUEST is issued via
+		 * qedr_iw_mpa_request
+		 */
+		if (event_type == IW_CM_EVENT_CONNECT_REPLY) {
+			event.private_data_len =
+				params->cm_info->private_data_len;
+			event.private_data =
+				(void *)params->cm_info->private_data;
+		}
+	}
+
+	if (ep->cm_id)
+		ep->cm_id->event_handler(ep->cm_id, &event);
+}
+
+static void
+qedr_iw_close_event(void *context, struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+
+	if (ep->cm_id)
+		qedr_iw_issue_event(context, params, IW_CM_EVENT_CLOSE);
+
+	kref_put(&ep->refcnt, qedr_iw_free_ep);
+}
+
+static void
+qedr_iw_qp_event(void *context,
+		 struct qed_iwarp_cm_event_params *params,
+		 enum ib_event_type ib_event, char *str)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct qedr_dev *dev = ep->dev;
+	struct ib_qp *ibqp = &ep->qp->ibqp;
+	struct ib_event event;
+
+	DP_NOTICE(dev, "QP error received: %s\n", str);
+
+	if (ibqp->event_handler) {
+		event.event = ib_event;
+		event.device = ibqp->device;
+		event.element.qp = ibqp;
+		ibqp->event_handler(&event, ibqp->qp_context);
+	}
+}
+
+struct qedr_discon_work {
+	struct work_struct		work;
+	struct qedr_iw_ep		*ep;
+	enum qed_iwarp_event_type	event;
+	int				status;
+};
+
+static void qedr_iw_disconnect_worker(struct work_struct *work)
+{
+	struct qedr_discon_work *dwork =
+	    container_of(work, struct qedr_discon_work, work);
+	struct qed_rdma_modify_qp_in_params qp_params = { 0 };
+	struct qedr_iw_ep *ep = dwork->ep;
+	struct qedr_dev *dev = ep->dev;
+	struct qedr_qp *qp = ep->qp;
+	struct iw_cm_event event;
+
+	/* The qp won't be released until we release the ep.
+	 * the ep's refcnt was increased before calling this
+	 * function, therefore it is safe to access qp
+	 */
+	if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_DISCONNECT,
+			     &qp->iwarp_cm_flags))
+		goto out;
+
+	memset(&event, 0, sizeof(event));
+	event.status = dwork->status;
+	event.event = IW_CM_EVENT_DISCONNECT;
+
+	/* Success means graceful disconnect was requested. modifying
+	 * to SQD is translated to graceful disconnect. O/w reset is sent
+	 */
+	if (dwork->status)
+		qp_params.new_state = QED_ROCE_QP_STATE_ERR;
+	else
+		qp_params.new_state = QED_ROCE_QP_STATE_SQD;
+
+
+	if (ep->cm_id)
+		ep->cm_id->event_handler(ep->cm_id, &event);
+
+	SET_FIELD(qp_params.modify_flags,
+		  QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1);
+
+	dev->ops->rdma_modify_qp(dev->rdma_ctx, qp->qed_qp, &qp_params);
+
+	complete(&ep->qp->iwarp_cm_comp);
+out:
+	kfree(dwork);
+	kref_put(&ep->refcnt, qedr_iw_free_ep);
+}
+
+static void
+qedr_iw_disconnect_event(void *context,
+			 struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_discon_work *work;
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct qedr_dev *dev = ep->dev;
+
+	work = kzalloc(sizeof(*work), GFP_ATOMIC);
+	if (!work)
+		return;
+
+	/* We can't get a close event before disconnect, but since
+	 * we're scheduling a work queue we need to make sure close
+	 * won't delete the ep, so we increase the refcnt
+	 */
+	kref_get(&ep->refcnt);
+
+	work->ep = ep;
+	work->event = params->event;
+	work->status = params->status;
+
+	INIT_WORK(&work->work, qedr_iw_disconnect_worker);
+	queue_work(dev->iwarp_wq, &work->work);
+}
+
+static void
+qedr_iw_passive_complete(void *context,
+			 struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct qedr_dev *dev = ep->dev;
+
+	/* We will only reach the following state if MPA_REJECT was called on
+	 * passive. In this case there will be no associated QP.
+	 */
+	if ((params->status == -ECONNREFUSED) && (!ep->qp)) {
+		DP_DEBUG(dev, QEDR_MSG_IWARP,
+			 "PASSIVE connection refused releasing ep...\n");
+		kref_put(&ep->refcnt, qedr_iw_free_ep);
+		return;
+	}
+
+	complete(&ep->qp->iwarp_cm_comp);
+	qedr_iw_issue_event(context, params, IW_CM_EVENT_ESTABLISHED);
+
+	if (params->status < 0)
+		qedr_iw_close_event(context, params);
+}
+
+static void
+qedr_iw_active_complete(void *context,
+			struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+
+	complete(&ep->qp->iwarp_cm_comp);
+	qedr_iw_issue_event(context, params, IW_CM_EVENT_CONNECT_REPLY);
+
+	if (params->status < 0)
+		kref_put(&ep->refcnt, qedr_iw_free_ep);
+}
+
+static int
+qedr_iw_mpa_reply(void *context, struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct qedr_dev *dev = ep->dev;
+	struct qed_iwarp_send_rtr_in rtr_in;
+
+	rtr_in.ep_context = params->ep_context;
+
+	return dev->ops->iwarp_send_rtr(dev->rdma_ctx, &rtr_in);
+}
+
+static int
+qedr_iw_event_handler(void *context, struct qed_iwarp_cm_event_params *params)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
+	struct qedr_dev *dev = ep->dev;
+
+	switch (params->event) {
+	case QED_IWARP_EVENT_MPA_REQUEST:
+		qedr_iw_mpa_request(context, params);
+		break;
+	case QED_IWARP_EVENT_ACTIVE_MPA_REPLY:
+		qedr_iw_mpa_reply(context, params);
+		break;
+	case QED_IWARP_EVENT_PASSIVE_COMPLETE:
+		qedr_iw_passive_complete(context, params);
+		break;
+	case QED_IWARP_EVENT_ACTIVE_COMPLETE:
+		qedr_iw_active_complete(context, params);
+		break;
+	case QED_IWARP_EVENT_DISCONNECT:
+		qedr_iw_disconnect_event(context, params);
+		break;
+	case QED_IWARP_EVENT_CLOSE:
+		qedr_iw_close_event(context, params);
+		break;
+	case QED_IWARP_EVENT_RQ_EMPTY:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_RQ_EMPTY");
+		break;
+	case QED_IWARP_EVENT_IRQ_FULL:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_IRQ_FULL");
+		break;
+	case QED_IWARP_EVENT_LLP_TIMEOUT:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_LLP_TIMEOUT");
+		break;
+	case QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_ACCESS_ERR,
+				 "QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR");
+		break;
+	case QED_IWARP_EVENT_CQ_OVERFLOW:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_CQ_OVERFLOW");
+		break;
+	case QED_IWARP_EVENT_QP_CATASTROPHIC:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_QP_CATASTROPHIC");
+		break;
+	case QED_IWARP_EVENT_LOCAL_ACCESS_ERROR:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_ACCESS_ERR,
+				 "QED_IWARP_EVENT_LOCAL_ACCESS_ERROR");
+		break;
+	case QED_IWARP_EVENT_REMOTE_OPERATION_ERROR:
+		qedr_iw_qp_event(context, params, IB_EVENT_QP_FATAL,
+				 "QED_IWARP_EVENT_REMOTE_OPERATION_ERROR");
+		break;
+	case QED_IWARP_EVENT_TERMINATE_RECEIVED:
+		DP_NOTICE(dev, "Got terminate message\n");
+		break;
+	default:
+		DP_NOTICE(dev, "Unknown event received %d\n", params->event);
+		break;
+	}
+	return 0;
+}
+
+static u16 qedr_iw_get_vlan_ipv4(struct qedr_dev *dev, u32 *addr)
+{
+	struct net_device *ndev;
+	u16 vlan_id = 0;
+
+	ndev = ip_dev_find(&init_net, htonl(addr[0]));
+
+	if (ndev) {
+		vlan_id = rdma_vlan_dev_vlan_id(ndev);
+		dev_put(ndev);
+	}
+	if (vlan_id == 0xffff)
+		vlan_id = 0;
+	return vlan_id;
+}
+
+static u16 qedr_iw_get_vlan_ipv6(u32 *addr)
+{
+	struct net_device *ndev = NULL;
+	struct in6_addr laddr6;
+	u16 vlan_id = 0;
+	int i;
+
+	if (!IS_ENABLED(CONFIG_IPV6))
+		return vlan_id;
+
+	for (i = 0; i < 4; i++)
+		laddr6.in6_u.u6_addr32[i] = htonl(addr[i]);
+
+	rcu_read_lock();
+	for_each_netdev_rcu(&init_net, ndev) {
+		if (ipv6_chk_addr(&init_net, &laddr6, ndev, 1)) {
+			vlan_id = rdma_vlan_dev_vlan_id(ndev);
+			break;
+		}
+	}
+
+	rcu_read_unlock();
+	if (vlan_id == 0xffff)
+		vlan_id = 0;
+
+	return vlan_id;
+}
+
+static int
+qedr_addr4_resolve(struct qedr_dev *dev,
+		   struct sockaddr_in *src_in,
+		   struct sockaddr_in *dst_in, u8 *dst_mac)
+{
+	__be32 src_ip = src_in->sin_addr.s_addr;
+	__be32 dst_ip = dst_in->sin_addr.s_addr;
+	struct neighbour *neigh = NULL;
+	struct rtable *rt = NULL;
+	int rc = 0;
+
+	rt = ip_route_output(&init_net, dst_ip, src_ip, 0, 0);
+	if (IS_ERR(rt)) {
+		DP_ERR(dev, "ip_route_output returned error\n");
+		return -EINVAL;
+	}
+
+	neigh = dst_neigh_lookup(&rt->dst, &dst_ip);
+
+	if (neigh) {
+		rcu_read_lock();
+		if (neigh->nud_state & NUD_VALID) {
+			ether_addr_copy(dst_mac, neigh->ha);
+			DP_DEBUG(dev, QEDR_MSG_QP, "mac_addr=[%pM]\n", dst_mac);
+		} else {
+			neigh_event_send(neigh, NULL);
+		}
+		rcu_read_unlock();
+		neigh_release(neigh);
+	}
+
+	ip_rt_put(rt);
+
+	return rc;
+}
+
+static int
+qedr_addr6_resolve(struct qedr_dev *dev,
+		   struct sockaddr_in6 *src_in,
+		   struct sockaddr_in6 *dst_in, u8 *dst_mac)
+{
+	struct neighbour *neigh = NULL;
+	struct dst_entry *dst;
+	struct flowi6 fl6;
+	int rc = 0;
+
+	memset(&fl6, 0, sizeof(fl6));
+	fl6.daddr = dst_in->sin6_addr;
+	fl6.saddr = src_in->sin6_addr;
+
+	dst = ip6_route_output(&init_net, NULL, &fl6);
+
+	if ((!dst) || dst->error) {
+		if (dst) {
+			DP_ERR(dev,
+			       "ip6_route_output returned dst->error = %d\n",
+			       dst->error);
+			dst_release(dst);
+		}
+		return -EINVAL;
+	}
+	neigh = dst_neigh_lookup(dst, &fl6.daddr);
+	if (neigh) {
+		rcu_read_lock();
+		if (neigh->nud_state & NUD_VALID) {
+			ether_addr_copy(dst_mac, neigh->ha);
+			DP_DEBUG(dev, QEDR_MSG_QP, "mac_addr=[%pM]\n", dst_mac);
+		} else {
+			neigh_event_send(neigh, NULL);
+		}
+		rcu_read_unlock();
+		neigh_release(neigh);
+	}
+
+	dst_release(dst);
+
+	return rc;
+}
+
+static struct qedr_qp *qedr_iw_load_qp(struct qedr_dev *dev, u32 qpn)
+{
+	struct qedr_qp *qp;
+
+	xa_lock(&dev->qps);
+	qp = xa_load(&dev->qps, qpn);
+	if (qp)
+		kref_get(&qp->refcnt);
+	xa_unlock(&dev->qps);
+
+	return qp;
+}
+
+int qedr_iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	struct qedr_dev *dev = get_qedr_dev(cm_id->device);
+	struct qed_iwarp_connect_out out_params;
+	struct qed_iwarp_connect_in in_params;
+	struct qed_iwarp_cm_info *cm_info;
+	struct sockaddr_in6 *laddr6;
+	struct sockaddr_in6 *raddr6;
+	struct sockaddr_in *laddr;
+	struct sockaddr_in *raddr;
+	struct qedr_iw_ep *ep;
+	struct qedr_qp *qp;
+	int rc = 0;
+	int i;
+
+	laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+	raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
+	laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
+	raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
+
+	DP_DEBUG(dev, QEDR_MSG_IWARP, "MAPPED %d %d\n",
+		 ntohs(((struct sockaddr_in *)&cm_id->remote_addr)->sin_port),
+		 ntohs(raddr->sin_port));
+
+	DP_DEBUG(dev, QEDR_MSG_IWARP,
+		 "Connect source address: %pISpc, remote address: %pISpc\n",
+		 &cm_id->local_addr, &cm_id->remote_addr);
+
+	if (!laddr->sin_port || !raddr->sin_port)
+		return -EINVAL;
+
+	ep = kzalloc(sizeof(*ep), GFP_KERNEL);
+	if (!ep)
+		return -ENOMEM;
+
+	ep->dev = dev;
+	kref_init(&ep->refcnt);
+
+	qp = qedr_iw_load_qp(dev, conn_param->qpn);
+	if (!qp) {
+		rc = -EINVAL;
+		goto err;
+	}
+
+	ep->qp = qp;
+	cm_id->add_ref(cm_id);
+	ep->cm_id = cm_id;
+
+	in_params.event_cb = qedr_iw_event_handler;
+	in_params.cb_context = ep;
+
+	cm_info = &in_params.cm_info;
+	memset(cm_info->local_ip, 0, sizeof(cm_info->local_ip));
+	memset(cm_info->remote_ip, 0, sizeof(cm_info->remote_ip));
+
+	if (!IS_ENABLED(CONFIG_IPV6) ||
+	    cm_id->remote_addr.ss_family == AF_INET) {
+		cm_info->ip_version = QED_TCP_IPV4;
+
+		cm_info->remote_ip[0] = ntohl(raddr->sin_addr.s_addr);
+		cm_info->local_ip[0] = ntohl(laddr->sin_addr.s_addr);
+		cm_info->remote_port = ntohs(raddr->sin_port);
+		cm_info->local_port = ntohs(laddr->sin_port);
+		cm_info->vlan = qedr_iw_get_vlan_ipv4(dev, cm_info->local_ip);
+
+		rc = qedr_addr4_resolve(dev, laddr, raddr,
+					(u8 *)in_params.remote_mac_addr);
+
+		in_params.mss = dev->iwarp_max_mtu -
+		    (sizeof(struct iphdr) + sizeof(struct tcphdr));
+
+	} else {
+		in_params.cm_info.ip_version = QED_TCP_IPV6;
+
+		for (i = 0; i < 4; i++) {
+			cm_info->remote_ip[i] =
+			    ntohl(raddr6->sin6_addr.in6_u.u6_addr32[i]);
+			cm_info->local_ip[i] =
+			    ntohl(laddr6->sin6_addr.in6_u.u6_addr32[i]);
+		}
+
+		cm_info->local_port = ntohs(laddr6->sin6_port);
+		cm_info->remote_port = ntohs(raddr6->sin6_port);
+
+		in_params.mss = dev->iwarp_max_mtu -
+		    (sizeof(struct ipv6hdr) + sizeof(struct tcphdr));
+
+		cm_info->vlan = qedr_iw_get_vlan_ipv6(cm_info->local_ip);
+
+		rc = qedr_addr6_resolve(dev, laddr6, raddr6,
+					(u8 *)in_params.remote_mac_addr);
+	}
+	if (rc)
+		goto err;
+
+	DP_DEBUG(dev, QEDR_MSG_IWARP,
+		 "ord = %d ird=%d private_data=%p private_data_len=%d rq_psn=%d\n",
+		 conn_param->ord, conn_param->ird, conn_param->private_data,
+		 conn_param->private_data_len, qp->rq_psn);
+
+	cm_info->ord = conn_param->ord;
+	cm_info->ird = conn_param->ird;
+	cm_info->private_data = conn_param->private_data;
+	cm_info->private_data_len = conn_param->private_data_len;
+	in_params.qp = qp->qed_qp;
+	memcpy(in_params.local_mac_addr, dev->ndev->dev_addr, ETH_ALEN);
+
+	if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_CONNECT,
+			     &qp->iwarp_cm_flags)) {
+		rc = -ENODEV;
+		goto err; /* QP already being destroyed */
+	}
+
+	rc = dev->ops->iwarp_connect(dev->rdma_ctx, &in_params, &out_params);
+	if (rc) {
+		complete(&qp->iwarp_cm_comp);
+		goto err;
+	}
+
+	return rc;
+
+err:
+	kref_put(&ep->refcnt, qedr_iw_free_ep);
+	return rc;
+}
+
+int qedr_iw_create_listen(struct iw_cm_id *cm_id, int backlog)
+{
+	struct qedr_dev *dev = get_qedr_dev(cm_id->device);
+	struct qedr_iw_listener *listener;
+	struct qed_iwarp_listen_in iparams;
+	struct qed_iwarp_listen_out oparams;
+	struct sockaddr_in *laddr;
+	struct sockaddr_in6 *laddr6;
+	int rc;
+	int i;
+
+	laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+	laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
+
+	DP_DEBUG(dev, QEDR_MSG_IWARP,
+		 "Create Listener address: %pISpc\n", &cm_id->local_addr);
+
+	listener = kzalloc(sizeof(*listener), GFP_KERNEL);
+	if (!listener)
+		return -ENOMEM;
+
+	listener->dev = dev;
+	cm_id->add_ref(cm_id);
+	listener->cm_id = cm_id;
+	listener->backlog = backlog;
+
+	iparams.cb_context = listener;
+	iparams.event_cb = qedr_iw_event_handler;
+	iparams.max_backlog = backlog;
+
+	if (!IS_ENABLED(CONFIG_IPV6) ||
+	    cm_id->local_addr.ss_family == AF_INET) {
+		iparams.ip_version = QED_TCP_IPV4;
+		memset(iparams.ip_addr, 0, sizeof(iparams.ip_addr));
+
+		iparams.ip_addr[0] = ntohl(laddr->sin_addr.s_addr);
+		iparams.port = ntohs(laddr->sin_port);
+		iparams.vlan = qedr_iw_get_vlan_ipv4(dev, iparams.ip_addr);
+	} else {
+		iparams.ip_version = QED_TCP_IPV6;
+
+		for (i = 0; i < 4; i++) {
+			iparams.ip_addr[i] =
+			    ntohl(laddr6->sin6_addr.in6_u.u6_addr32[i]);
+		}
+
+		iparams.port = ntohs(laddr6->sin6_port);
+
+		iparams.vlan = qedr_iw_get_vlan_ipv6(iparams.ip_addr);
+	}
+	rc = dev->ops->iwarp_create_listen(dev->rdma_ctx, &iparams, &oparams);
+	if (rc)
+		goto err;
+
+	listener->qed_handle = oparams.handle;
+	cm_id->provider_data = listener;
+	return rc;
+
+err:
+	cm_id->rem_ref(cm_id);
+	kfree(listener);
+	return rc;
+}
+
+int qedr_iw_destroy_listen(struct iw_cm_id *cm_id)
+{
+	struct qedr_iw_listener *listener = cm_id->provider_data;
+	struct qedr_dev *dev = get_qedr_dev(cm_id->device);
+	int rc = 0;
+
+	if (listener->qed_handle)
+		rc = dev->ops->iwarp_destroy_listen(dev->rdma_ctx,
+						    listener->qed_handle);
+
+	cm_id->rem_ref(cm_id);
+	kfree(listener);
+	return rc;
+}
+
+int qedr_iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)cm_id->provider_data;
+	struct qedr_dev *dev = ep->dev;
+	struct qedr_qp *qp;
+	struct qed_iwarp_accept_in params;
+	int rc;
+
+	DP_DEBUG(dev, QEDR_MSG_IWARP, "Accept on qpid=%d\n", conn_param->qpn);
+
+	qp = qedr_iw_load_qp(dev, conn_param->qpn);
+	if (!qp) {
+		DP_ERR(dev, "Invalid QP number %d\n", conn_param->qpn);
+		return -EINVAL;
+	}
+
+	ep->qp = qp;
+	cm_id->add_ref(cm_id);
+	ep->cm_id = cm_id;
+
+	params.ep_context = ep->qed_context;
+	params.cb_context = ep;
+	params.qp = ep->qp->qed_qp;
+	params.private_data = conn_param->private_data;
+	params.private_data_len = conn_param->private_data_len;
+	params.ird = conn_param->ird;
+	params.ord = conn_param->ord;
+
+	if (test_and_set_bit(QEDR_IWARP_CM_WAIT_FOR_CONNECT,
+			     &qp->iwarp_cm_flags)) {
+		rc = -EINVAL;
+		goto err; /* QP already destroyed */
+	}
+
+	rc = dev->ops->iwarp_accept(dev->rdma_ctx, &params);
+	if (rc) {
+		complete(&qp->iwarp_cm_comp);
+		goto err;
+	}
+
+	return rc;
+
+err:
+	kref_put(&ep->refcnt, qedr_iw_free_ep);
+
+	return rc;
+}
+
+int qedr_iw_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
+{
+	struct qedr_iw_ep *ep = (struct qedr_iw_ep *)cm_id->provider_data;
+	struct qedr_dev *dev = ep->dev;
+	struct qed_iwarp_reject_in params;
+
+	params.ep_context = ep->qed_context;
+	params.cb_context = ep;
+	params.private_data = pdata;
+	params.private_data_len = pdata_len;
+	ep->qp = NULL;
+
+	return dev->ops->iwarp_reject(dev->rdma_ctx, &params);
+}
+
+void qedr_iw_qp_add_ref(struct ib_qp *ibqp)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+
+	kref_get(&qp->refcnt);
+}
+
+void qedr_iw_qp_rem_ref(struct ib_qp *ibqp)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+
+	kref_put(&qp->refcnt, qedr_iw_free_qp);
+}
+
+struct ib_qp *qedr_iw_get_qp(struct ib_device *ibdev, int qpn)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+
+	return xa_load(&dev->qps, qpn);
+}