Commit de0089e6 authored by Kalderon, Michal's avatar Kalderon, Michal Committed by Doug Ledford
Browse files

RDMA/qedr: Add iWARP connection management qp related callbacks



This patch implements the following iWARP callbacks:
qp_add_ref
qp_rem_ref
get_qp
Signed-off-by: default avatarMichal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: default avatarRam Amrani <Ram.Amrani@cavium.com>
Signed-off-by: default avatarAriel Elior <Ariel.Elior@cavium.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent fb1a22be
obj-$(CONFIG_INFINIBAND_QEDR) := qedr.o
qedr-y := main.o verbs.o qedr_roce_cm.o
qedr-y := main.o verbs.o qedr_roce_cm.o qedr_iw_cm.o
......@@ -39,12 +39,14 @@
#include <linux/iommu.h>
#include <linux/pci.h>
#include <net/addrconf.h>
#include <linux/idr.h>
#include <linux/qed/qed_chain.h>
#include <linux/qed/qed_if.h>
#include "qedr.h"
#include "verbs.h"
#include <rdma/qedr-abi.h>
#include "qedr_iw_cm.h"
MODULE_DESCRIPTION("QLogic 40G/100G ROCE Driver");
MODULE_AUTHOR("QLogic Corporation");
......@@ -143,6 +145,9 @@ int qedr_iw_register_device(struct qedr_dev *dev)
dev->ibdev.iwcm = kzalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL);
if (!dev->ibdev.iwcm)
return -ENOMEM;
dev->ibdev.iwcm->add_ref = qedr_iw_qp_add_ref;
dev->ibdev.iwcm->rem_ref = qedr_iw_qp_rem_ref;
dev->ibdev.iwcm->get_qp = qedr_iw_get_qp;
memcpy(dev->ibdev.iwcm->ifname,
dev->ndev->name, sizeof(dev->ibdev.iwcm->ifname));
......@@ -315,6 +320,11 @@ static int qedr_alloc_resources(struct qedr_dev *dev)
spin_lock_init(&dev->sgid_lock);
if (IS_IWARP(dev)) {
spin_lock_init(&dev->idr_lock);
idr_init(&dev->qpidr);
}
/* Allocate Status blocks for CNQ */
dev->sb_array = kcalloc(dev->num_cnq, sizeof(*dev->sb_array),
GFP_KERNEL);
......
......@@ -33,6 +33,7 @@
#define __QEDR_H__
#include <linux/pci.h>
#include <linux/idr.h>
#include <rdma/ib_addr.h>
#include <linux/qed/qed_if.h>
#include <linux/qed/qed_chain.h>
......@@ -164,7 +165,8 @@ struct qedr_dev {
struct qedr_cq *gsi_rqcq;
struct qedr_qp *gsi_qp;
enum qed_rdma_type rdma_type;
spinlock_t idr_lock; /* Protect qpidr data-structure */
struct idr qpidr;
unsigned long enet_state;
};
......@@ -399,6 +401,7 @@ struct qedr_qp {
/* Relevant to qps created from user space only (applications) */
struct qedr_userq usq;
struct qedr_userq urq;
atomic_t refcnt;
};
struct qedr_ah {
......
/* 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 "qedr.h"
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);
}
/* QLogic qed 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 <rdma/iw_cm.h>
void qedr_iw_qp_add_ref(struct ib_qp *qp);
void qedr_iw_qp_rem_ref(struct ib_qp *qp);
struct ib_qp *qedr_iw_get_qp(struct ib_device *dev, int qpn);
......@@ -1280,6 +1280,7 @@ static void qedr_set_common_qp_params(struct qedr_dev *dev,
struct ib_qp_init_attr *attrs)
{
spin_lock_init(&qp->q_lock);
atomic_set(&qp->refcnt, 1);
qp->pd = pd;
qp->qp_type = attrs->qp_type;
qp->max_inline_data = attrs->cap.max_inline_data;
......@@ -1350,6 +1351,33 @@ static inline void qedr_qp_user_print(struct qedr_dev *dev, struct qedr_qp *qp)
qp->usq.buf_len, qp->urq.buf_addr, qp->urq.buf_len);
}
static int qedr_idr_add(struct qedr_dev *dev, void *ptr, u32 id)
{
int rc;
if (!rdma_protocol_iwarp(&dev->ibdev, 1))
return 0;
idr_preload(GFP_KERNEL);
spin_lock_irq(&dev->idr_lock);
rc = idr_alloc(&dev->qpidr, ptr, id, id + 1, GFP_ATOMIC);
spin_unlock_irq(&dev->idr_lock);
idr_preload_end();
return rc < 0 ? rc : 0;
}
static void qedr_idr_remove(struct qedr_dev *dev, u32 id)
{
if (!rdma_protocol_iwarp(&dev->ibdev, 1))
return;
spin_lock_irq(&dev->idr_lock);
idr_remove(&dev->qpidr, id);
spin_unlock_irq(&dev->idr_lock);
}
static void qedr_cleanup_user(struct qedr_dev *dev, struct qedr_qp *qp)
{
if (qp->usq.umem)
......@@ -1700,6 +1728,10 @@ struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
qp->ibqp.qp_num = qp->qp_id;
rc = qedr_idr_add(dev, qp, qp->qp_id);
if (rc)
goto err;
return &qp->ibqp;
err:
......@@ -2232,8 +2264,10 @@ int qedr_destroy_qp(struct ib_qp *ibqp)
qedr_free_qp_resources(dev, qp);
kfree(qp);
if (atomic_dec_and_test(&qp->refcnt)) {
qedr_idr_remove(dev, qp->qp_id);
kfree(qp);
}
return rc;
}
......
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