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OpenCloudOS-Kernel/drivers/infiniband/hw/qedr/qedr_iw_cm.c

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/* 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_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;
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;
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);
ep->cm_id->rem_ref(ep->cm_id);
ep->cm_id = NULL;
}
}
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;
if (qp->destroyed) {
kfree(dwork);
qedr_iw_qp_rem_ref(&qp->ibqp);
return;
}
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;
kfree(dwork);
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);
qedr_iw_qp_rem_ref(&qp->ibqp);
}
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;
struct qedr_qp *qp = ep->qp;
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return;
qedr_iw_qp_add_ref(&qp->ibqp);
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");
kfree(ep);
return;
}
qedr_iw_issue_event(context, params, IW_CM_EVENT_ESTABLISHED);
if (params->status < 0)
qedr_iw_close_event(context, params);
}
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:
ep->during_connect = 0;
qedr_iw_passive_complete(context, params);
break;
case QED_IWARP_EVENT_ACTIVE_COMPLETE:
ep->during_connect = 0;
qedr_iw_issue_event(context,
params,
IW_CM_EVENT_CONNECT_REPLY);
if (params->status < 0) {
struct qedr_iw_ep *ep = (struct qedr_iw_ep *)context;
ep->cm_id->rem_ref(ep->cm_id);
ep->cm_id = NULL;
}
break;
case QED_IWARP_EVENT_DISCONNECT:
qedr_iw_disconnect_event(context, params);
break;
case QED_IWARP_EVENT_CLOSE:
ep->during_connect = 0;
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) {
dst_release(dst);
DP_ERR(dev,
"ip6_route_output returned dst->error = %d\n",
dst->error);
}
return -EINVAL;
}
neigh = dst_neigh_lookup(dst, &dst_in);
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;
}
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;
qp = idr_find(&dev->qpidr, conn_param->qpn);
laddr = (struct sockaddr_in *)&cm_id->local_addr;
raddr = (struct sockaddr_in *)&cm_id->remote_addr;
laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr;
raddr6 = (struct sockaddr_in6 *)&cm_id->remote_addr;
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;
ep->qp = qp;
qp->ep = ep;
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);
ep->during_connect = 1;
rc = dev->ops->iwarp_connect(dev->rdma_ctx, &in_params, &out_params);
if (rc)
goto err;
return rc;
err:
cm_id->rem_ref(cm_id);
kfree(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->local_addr;
laddr6 = (struct sockaddr_in6 *)&cm_id->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);
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 = idr_find(&dev->qpidr, conn_param->qpn);
if (!qp) {
DP_ERR(dev, "Invalid QP number %d\n", conn_param->qpn);
return -EINVAL;
}
ep->qp = qp;
qp->ep = ep;
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;
ep->during_connect = 1;
rc = dev->ops->iwarp_accept(dev->rdma_ctx, &params);
if (rc)
goto err;
return rc;
err:
ep->during_connect = 0;
cm_id->rem_ref(cm_id);
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);
atomic_inc(&qp->refcnt);
}
void qedr_iw_qp_rem_ref(struct ib_qp *ibqp)
{
struct qedr_qp *qp = get_qedr_qp(ibqp);
if (atomic_dec_and_test(&qp->refcnt)) {
spin_lock_irq(&qp->dev->idr_lock);
idr_remove(&qp->dev->qpidr, qp->qp_id);
spin_unlock_irq(&qp->dev->idr_lock);
kfree(qp);
}
}
struct ib_qp *qedr_iw_get_qp(struct ib_device *ibdev, int qpn)
{
struct qedr_dev *dev = get_qedr_dev(ibdev);
return idr_find(&dev->qpidr, qpn);
}
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