From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
Lijun Ou <oulijun@huawei.com>,
linux-rdma@vger.kernel.org,
Potnuri Bharat Teja <bharat@chelsio.com>,
Weihang Li <liweihang@huawei.com>,
"Wei Hu(Xavier)" <huwei87@hisilicon.com>,
Yishai Hadas <yishaih@mellanox.com>
Subject: [PATCH rdma-next v2] RDMA: Clean MW allocation and free flows
Date: Tue, 7 Jul 2020 16:26:56 +0300 [thread overview]
Message-ID: <20200707132656.1154403-1-leon@kernel.org> (raw)
From: Leon Romanovsky <leonro@mellanox.com>
Move allocation and destruction of memory windows under ib_core
responsibility and clean drivers to ensure that no updates to MW
ib_core structures are done in driver layer.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
Changelog:
v2: Changed the way of how rkey is assigned.
v1: https://lore.kernel.org/linux-rdma/20200630101855.368895-3-leon@kernel.org
---
drivers/infiniband/core/device.c | 1 +
drivers/infiniband/core/uverbs.h | 2 +-
drivers/infiniband/core/uverbs_cmd.c | 26 ++++++++-----
drivers/infiniband/core/uverbs_main.c | 10 ++---
drivers/infiniband/core/uverbs_std_types.c | 3 +-
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 5 +--
drivers/infiniband/hw/cxgb4/mem.c | 35 ++++++-----------
drivers/infiniband/hw/cxgb4/provider.c | 4 +-
drivers/infiniband/hw/hns/hns_roce_device.h | 5 +--
drivers/infiniband/hw/hns/hns_roce_main.c | 2 +
drivers/infiniband/hw/hns/hns_roce_mr.c | 31 +++++----------
drivers/infiniband/hw/mlx4/main.c | 2 +
drivers/infiniband/hw/mlx4/mlx4_ib.h | 5 +--
drivers/infiniband/hw/mlx4/mr.c | 33 +++++-----------
drivers/infiniband/hw/mlx5/main.c | 2 +
drivers/infiniband/hw/mlx5/mlx5_ib.h | 5 +--
drivers/infiniband/hw/mlx5/mr.c | 42 ++++++++-------------
include/rdma/ib_verbs.h | 6 +--
18 files changed, 91 insertions(+), 128 deletions(-)
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index b2d617e599a1..cb61542af03f 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2689,6 +2689,7 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_OBJ_SIZE(dev_ops, ib_ah);
SET_OBJ_SIZE(dev_ops, ib_counters);
SET_OBJ_SIZE(dev_ops, ib_cq);
+ SET_OBJ_SIZE(dev_ops, ib_mw);
SET_OBJ_SIZE(dev_ops, ib_pd);
SET_OBJ_SIZE(dev_ops, ib_srq);
SET_OBJ_SIZE(dev_ops, ib_ucontext);
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 53a10479958b..072bfe4e1b5b 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -242,7 +242,7 @@ int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs);
-int uverbs_dealloc_mw(struct ib_mw *mw);
+void uverbs_dealloc_mw(struct ib_mw *mw);
void ib_uverbs_detach_umcast(struct ib_qp *qp,
struct ib_uqp_object *uobj);
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 68c9a0210220..c160306c48f0 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -890,7 +890,7 @@ static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
{
struct ib_uverbs_alloc_mw cmd;
- struct ib_uverbs_alloc_mw_resp resp;
+ struct ib_uverbs_alloc_mw_resp resp = {};
struct ib_uobject *uobj;
struct ib_pd *pd;
struct ib_mw *mw;
@@ -916,21 +916,24 @@ static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
goto err_put;
}
- mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata);
- if (IS_ERR(mw)) {
- ret = PTR_ERR(mw);
+ mw = rdma_zalloc_drv_obj(ib_dev, ib_mw);
+ if (!mw) {
+ ret = -ENOMEM;
goto err_put;
}
- mw->device = pd->device;
- mw->pd = pd;
+ mw->device = ib_dev;
+ mw->pd = pd;
mw->uobject = uobj;
- atomic_inc(&pd->usecnt);
-
uobj->object = mw;
+ mw->type = cmd.mw_type;
- memset(&resp, 0, sizeof(resp));
- resp.rkey = mw->rkey;
+ ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata);
+ if (ret)
+ goto err_alloc;
+
+ atomic_inc(&pd->usecnt);
+ resp.rkey = mw->rkey;
resp.mw_handle = uobj->id;
ret = uverbs_response(attrs, &resp, sizeof(resp));
@@ -943,6 +946,9 @@ static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
err_copy:
uverbs_dealloc_mw(mw);
+ mw = NULL;
+err_alloc:
+ kfree(mw);
err_put:
uobj_put_obj_read(pd);
err_free:
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 69e4755cc04b..706c972ea3a1 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -102,15 +102,13 @@ struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile)
}
EXPORT_SYMBOL(ib_uverbs_get_ucontext_file);
-int uverbs_dealloc_mw(struct ib_mw *mw)
+void uverbs_dealloc_mw(struct ib_mw *mw)
{
struct ib_pd *pd = mw->pd;
- int ret;
- ret = mw->device->ops.dealloc_mw(mw);
- if (!ret)
- atomic_dec(&pd->usecnt);
- return ret;
+ mw->device->ops.dealloc_mw(mw);
+ atomic_dec(&pd->usecnt);
+ kfree(mw);
}
static void ib_uverbs_release_dev(struct device *device)
diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c
index 08c39cfb1bd9..e4994cc4cc51 100644
--- a/drivers/infiniband/core/uverbs_std_types.c
+++ b/drivers/infiniband/core/uverbs_std_types.c
@@ -72,7 +72,8 @@ static int uverbs_free_mw(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
- return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
+ uverbs_dealloc_mw((struct ib_mw *)uobject->object);
+ return 0;
}
static int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 2b2b009b371a..72edf9a762ef 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -983,10 +983,9 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
u32 max_num_sg);
int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
unsigned int *sg_offset);
-int c4iw_dealloc_mw(struct ib_mw *mw);
+void c4iw_dealloc_mw(struct ib_mw *mw);
void c4iw_dealloc(struct uld_ctx *ctx);
-struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata);
+int c4iw_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start,
u64 length, u64 virt, int acc,
struct ib_udata *udata);
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 73936c3341b7..87bc54ade550 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -611,30 +611,23 @@ struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
return ERR_PTR(err);
}
-struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata)
+int c4iw_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
{
+ struct c4iw_mw *mhp = to_c4iw_mw(ibmw);
struct c4iw_dev *rhp;
struct c4iw_pd *php;
- struct c4iw_mw *mhp;
u32 mmid;
u32 stag = 0;
int ret;
- if (type != IB_MW_TYPE_1)
- return ERR_PTR(-EINVAL);
+ if (ibmw->type != IB_MW_TYPE_1)
+ return -EINVAL;
- php = to_c4iw_pd(pd);
+ php = to_c4iw_pd(ibmw->pd);
rhp = php->rhp;
- mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
- if (!mhp)
- return ERR_PTR(-ENOMEM);
-
mhp->wr_waitp = c4iw_alloc_wr_wait(GFP_KERNEL);
- if (!mhp->wr_waitp) {
- ret = -ENOMEM;
- goto free_mhp;
- }
+ if (!mhp->wr_waitp)
+ return -ENOMEM;
mhp->dereg_skb = alloc_skb(SGE_MAX_WR_LEN, GFP_KERNEL);
if (!mhp->dereg_skb) {
@@ -645,18 +638,19 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
ret = allocate_window(&rhp->rdev, &stag, php->pdid, mhp->wr_waitp);
if (ret)
goto free_skb;
+
mhp->rhp = rhp;
mhp->attr.pdid = php->pdid;
mhp->attr.type = FW_RI_STAG_MW;
mhp->attr.stag = stag;
mmid = (stag) >> 8;
- mhp->ibmw.rkey = stag;
+ ibmw->rkey = stag;
if (xa_insert_irq(&rhp->mrs, mmid, mhp, GFP_KERNEL)) {
ret = -ENOMEM;
goto dealloc_win;
}
pr_debug("mmid 0x%x mhp %p stag 0x%x\n", mmid, mhp, stag);
- return &(mhp->ibmw);
+ return 0;
dealloc_win:
deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb,
@@ -665,12 +659,10 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
kfree_skb(mhp->dereg_skb);
free_wr_wait:
c4iw_put_wr_wait(mhp->wr_waitp);
-free_mhp:
- kfree(mhp);
- return ERR_PTR(ret);
+ return ret;
}
-int c4iw_dealloc_mw(struct ib_mw *mw)
+void c4iw_dealloc_mw(struct ib_mw *mw)
{
struct c4iw_dev *rhp;
struct c4iw_mw *mhp;
@@ -684,9 +676,6 @@ int c4iw_dealloc_mw(struct ib_mw *mw)
mhp->wr_waitp);
kfree_skb(mhp->dereg_skb);
c4iw_put_wr_wait(mhp->wr_waitp);
- pr_debug("ib_mw %p mmid 0x%x ptr %p\n", mw, mmid, mhp);
- kfree(mhp);
- return 0;
}
struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 1d3ff59e4060..7ec74e2fa885 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -508,8 +508,10 @@ static const struct ib_device_ops c4iw_dev_ops = {
.query_qp = c4iw_ib_query_qp,
.reg_user_mr = c4iw_reg_user_mr,
.req_notify_cq = c4iw_arm_cq,
- INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
+
INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
+ INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw),
+ INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
};
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index 2a932b75a33d..c5a7dd4b7b6a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -1201,9 +1201,8 @@ int hns_roce_hw_destroy_mpt(struct hns_roce_dev *hr_dev,
unsigned long mpt_index);
unsigned long key_to_hw_index(u32 key);
-struct ib_mw *hns_roce_alloc_mw(struct ib_pd *pd, enum ib_mw_type,
- struct ib_udata *udata);
-int hns_roce_dealloc_mw(struct ib_mw *ibmw);
+int hns_roce_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
+void hns_roce_dealloc_mw(struct ib_mw *ibmw);
void hns_roce_buf_free(struct hns_roce_dev *hr_dev, struct hns_roce_buf *buf);
int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 5907cfd878a6..45f7353bd348 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -454,6 +454,8 @@ static const struct ib_device_ops hns_roce_dev_mr_ops = {
static const struct ib_device_ops hns_roce_dev_mw_ops = {
.alloc_mw = hns_roce_alloc_mw,
.dealloc_mw = hns_roce_dealloc_mw,
+
+ INIT_RDMA_OBJ_SIZE(ib_mw, hns_roce_mw, ibmw),
};
static const struct ib_device_ops hns_roce_dev_frmr_ops = {
diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c
index 2af52edd221f..848babe2a760 100644
--- a/drivers/infiniband/hw/hns/hns_roce_mr.c
+++ b/drivers/infiniband/hw/hns/hns_roce_mr.c
@@ -589,28 +589,22 @@ static int hns_roce_mw_enable(struct hns_roce_dev *hr_dev,
return ret;
}
-struct ib_mw *hns_roce_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
- struct ib_udata *udata)
+int hns_roce_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
{
- struct hns_roce_dev *hr_dev = to_hr_dev(ib_pd->device);
- struct hns_roce_mw *mw;
+ struct hns_roce_dev *hr_dev = to_hr_dev(ibmw->device);
+ struct hns_roce_mw *mw = to_hr_mw(ibmw);
unsigned long index = 0;
int ret;
- mw = kmalloc(sizeof(*mw), GFP_KERNEL);
- if (!mw)
- return ERR_PTR(-ENOMEM);
-
/* Allocate a key for mw from bitmap */
ret = hns_roce_bitmap_alloc(&hr_dev->mr_table.mtpt_bitmap, &index);
if (ret)
- goto err_bitmap;
+ return ret;
mw->rkey = hw_index_to_key(index);
- mw->ibmw.rkey = mw->rkey;
- mw->ibmw.type = type;
- mw->pdn = to_hr_pd(ib_pd)->pdn;
+ ibmw->rkey = mw->rkey;
+ mw->pdn = to_hr_pd(ibmw->pd)->pdn;
mw->pbl_hop_num = hr_dev->caps.pbl_hop_num;
mw->pbl_ba_pg_sz = hr_dev->caps.pbl_ba_pg_sz;
mw->pbl_buf_pg_sz = hr_dev->caps.pbl_buf_pg_sz;
@@ -619,26 +613,19 @@ struct ib_mw *hns_roce_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
if (ret)
goto err_mw;
- return &mw->ibmw;
+ return 0;
err_mw:
hns_roce_mw_free(hr_dev, mw);
-
-err_bitmap:
- kfree(mw);
-
- return ERR_PTR(ret);
+ return ret;
}
-int hns_roce_dealloc_mw(struct ib_mw *ibmw)
+void hns_roce_dealloc_mw(struct ib_mw *ibmw)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibmw->device);
struct hns_roce_mw *mw = to_hr_mw(ibmw);
hns_roce_mw_free(hr_dev, mw);
- kfree(mw);
-
- return 0;
}
static int mtr_map_region(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr,
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 5e7910a517da..0ad584a3b8d6 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2593,6 +2593,8 @@ static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
.alloc_mw = mlx4_ib_alloc_mw,
.dealloc_mw = mlx4_ib_dealloc_mw,
+
+ INIT_RDMA_OBJ_SIZE(ib_mw, mlx4_ib_mw, ibmw),
};
static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 38e87a700a2a..9c23073d6161 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -725,9 +725,8 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int access_flags,
struct ib_udata *udata);
int mlx4_ib_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
-struct ib_mw *mlx4_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata);
-int mlx4_ib_dealloc_mw(struct ib_mw *mw);
+int mlx4_ib_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
+void mlx4_ib_dealloc_mw(struct ib_mw *mw);
struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
u32 max_num_sg);
int mlx4_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 1d5ef0de12c9..cf68d63ea30b 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -610,47 +610,34 @@ int mlx4_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
return 0;
}
-struct ib_mw *mlx4_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata)
+int mlx4_ib_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
{
- struct mlx4_ib_dev *dev = to_mdev(pd->device);
- struct mlx4_ib_mw *mw;
+ struct mlx4_ib_dev *dev = to_mdev(ibmw->device);
+ struct mlx4_ib_mw *mw = to_mmw(ibmw);
int err;
- mw = kmalloc(sizeof(*mw), GFP_KERNEL);
- if (!mw)
- return ERR_PTR(-ENOMEM);
-
- err = mlx4_mw_alloc(dev->dev, to_mpd(pd)->pdn,
- to_mlx4_type(type), &mw->mmw);
+ err = mlx4_mw_alloc(dev->dev, to_mpd(ibmw->pd)->pdn,
+ to_mlx4_type(ibmw->type), &mw->mmw);
if (err)
- goto err_free;
+ return err;
err = mlx4_mw_enable(dev->dev, &mw->mmw);
if (err)
goto err_mw;
- mw->ibmw.rkey = mw->mmw.key;
-
- return &mw->ibmw;
+ ibmw->rkey = mw->mmw.key;
+ return 0;
err_mw:
mlx4_mw_free(dev->dev, &mw->mmw);
-
-err_free:
- kfree(mw);
-
- return ERR_PTR(err);
+ return err;
}
-int mlx4_ib_dealloc_mw(struct ib_mw *ibmw)
+void mlx4_ib_dealloc_mw(struct ib_mw *ibmw)
{
struct mlx4_ib_mw *mw = to_mmw(ibmw);
mlx4_mw_free(to_mdev(ibmw->device)->dev, &mw->mmw);
- kfree(mw);
-
- return 0;
}
struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 2da592054a3f..24717a5a930a 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -6666,6 +6666,8 @@ static const struct ib_device_ops mlx5_ib_dev_sriov_ops = {
static const struct ib_device_ops mlx5_ib_dev_mw_ops = {
.alloc_mw = mlx5_ib_alloc_mw,
.dealloc_mw = mlx5_ib_dealloc_mw,
+
+ INIT_RDMA_OBJ_SIZE(ib_mw, mlx5_ib_mw, ibmw),
};
static const struct ib_device_ops mlx5_ib_dev_xrc_ops = {
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 88e30ff77c16..63cf7d3b2043 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1195,9 +1195,8 @@ int mlx5_ib_advise_mr(struct ib_pd *pd,
struct ib_sge *sg_list,
u32 num_sge,
struct uverbs_attr_bundle *attrs);
-struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata);
-int mlx5_ib_dealloc_mw(struct ib_mw *mw);
+int mlx5_ib_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
+void mlx5_ib_dealloc_mw(struct ib_mw *mw);
int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
int page_shift, int flags);
struct mlx5_ib_mr *mlx5_ib_alloc_implicit_mr(struct mlx5_ib_pd *pd,
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 3e6f2f9c6655..64744fc3a47f 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1973,12 +1973,11 @@ struct ib_mr *mlx5_ib_alloc_mr_integrity(struct ib_pd *pd,
max_num_meta_sg);
}
-struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata)
+int mlx5_ib_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata)
{
- struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_dev *dev = to_mdev(ibmw->device);
int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
- struct mlx5_ib_mw *mw = NULL;
+ struct mlx5_ib_mw *mw = to_mmw(ibmw);
u32 *in = NULL;
void *mkc;
int ndescs;
@@ -1991,21 +1990,20 @@ struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
if (err)
- return ERR_PTR(err);
+ return err;
if (req.comp_mask || req.reserved1 || req.reserved2)
- return ERR_PTR(-EOPNOTSUPP);
+ return -EOPNOTSUPP;
if (udata->inlen > sizeof(req) &&
!ib_is_udata_cleared(udata, sizeof(req),
udata->inlen - sizeof(req)))
- return ERR_PTR(-EOPNOTSUPP);
+ return -EOPNOTSUPP;
ndescs = req.num_klms ? roundup(req.num_klms, 4) : roundup(1, 4);
- mw = kzalloc(sizeof(*mw), GFP_KERNEL);
in = kzalloc(inlen, GFP_KERNEL);
- if (!mw || !in) {
+ if (!in) {
err = -ENOMEM;
goto free;
}
@@ -2014,11 +2012,11 @@ struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
MLX5_SET(mkc, mkc, free, 1);
MLX5_SET(mkc, mkc, translations_octword_size, ndescs);
- MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
+ MLX5_SET(mkc, mkc, pd, to_mpd(ibmw->pd)->pdn);
MLX5_SET(mkc, mkc, umr_en, 1);
MLX5_SET(mkc, mkc, lr, 1);
MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_KLMS);
- MLX5_SET(mkc, mkc, en_rinval, !!((type == IB_MW_TYPE_2)));
+ MLX5_SET(mkc, mkc, en_rinval, !!((ibmw->type == IB_MW_TYPE_2)));
MLX5_SET(mkc, mkc, qpn, 0xffffff);
err = mlx5_ib_create_mkey(dev, &mw->mmkey, in, inlen);
@@ -2026,17 +2024,15 @@ struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
goto free;
mw->mmkey.type = MLX5_MKEY_MW;
- mw->ibmw.rkey = mw->mmkey.key;
+ ibmw->rkey = mw->mmkey.key;
mw->ndescs = ndescs;
resp.response_length = min(offsetof(typeof(resp), response_length) +
sizeof(resp.response_length), udata->outlen);
if (resp.response_length) {
err = ib_copy_to_udata(udata, &resp, resp.response_length);
- if (err) {
- mlx5_core_destroy_mkey(dev->mdev, &mw->mmkey);
- goto free;
- }
+ if (err)
+ goto free_mkey;
}
if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) {
@@ -2048,21 +2044,19 @@ struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
}
kfree(in);
- return &mw->ibmw;
+ return 0;
free_mkey:
mlx5_core_destroy_mkey(dev->mdev, &mw->mmkey);
free:
- kfree(mw);
kfree(in);
- return ERR_PTR(err);
+ return err;
}
-int mlx5_ib_dealloc_mw(struct ib_mw *mw)
+void mlx5_ib_dealloc_mw(struct ib_mw *mw)
{
struct mlx5_ib_dev *dev = to_mdev(mw->device);
struct mlx5_ib_mw *mmw = to_mmw(mw);
- int err;
if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) {
xa_erase(&dev->odp_mkeys, mlx5_base_mkey(mmw->mmkey.key));
@@ -2073,11 +2067,7 @@ int mlx5_ib_dealloc_mw(struct ib_mw *mw)
synchronize_srcu(&dev->odp_srcu);
}
- err = mlx5_core_destroy_mkey(dev->mdev, &mmw->mmkey);
- if (err)
- return err;
- kfree(mmw);
- return 0;
+ mlx5_core_destroy_mkey(dev->mdev, &mmw->mmkey);
}
int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 5060159a2c2c..884ae36f1521 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2490,9 +2490,8 @@ struct ib_device_ops {
unsigned int *sg_offset);
int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
struct ib_mr_status *mr_status);
- struct ib_mw *(*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type,
- struct ib_udata *udata);
- int (*dealloc_mw)(struct ib_mw *mw);
+ int (*alloc_mw)(struct ib_mw *mw, struct ib_udata *udata);
+ void (*dealloc_mw)(struct ib_mw *mw);
int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
@@ -2652,6 +2651,7 @@ struct ib_device_ops {
DECLARE_RDMA_OBJ_SIZE(ib_ah);
DECLARE_RDMA_OBJ_SIZE(ib_counters);
DECLARE_RDMA_OBJ_SIZE(ib_cq);
+ DECLARE_RDMA_OBJ_SIZE(ib_mw);
DECLARE_RDMA_OBJ_SIZE(ib_pd);
DECLARE_RDMA_OBJ_SIZE(ib_srq);
DECLARE_RDMA_OBJ_SIZE(ib_ucontext);
--
2.26.2
reply other threads:[~2020-07-07 13:27 UTC|newest]
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