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IB: Modify ib_create_mr API

Browse Source 
Use ib_alloc_mr with specific parameters.
Change the existing callers.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-07-30 10:32:35 +03:00 committed by Doug Ledford
parent 8b91ffc1cf
commit 9bee178b4f
7 changed files with 58 additions and 46 deletions
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31
drivers/infiniband/core/verbs.c
View File

@ -1235,15 +1235,32 @@ int ib_dereg_mr(struct ib_mr *mr)
}
EXPORT_SYMBOL(ib_dereg_mr);
struct ib_mr *ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr)
/**
* ib_alloc_mr() - Allocates a memory region
* @pd: protection domain associated with the region
* @mr_type: memory region type
* @max_num_sg: maximum sg entries available for registration.
*
* Notes:
* Memory registeration page/sg lists must not exceed max_num_sg.
* For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed
* max_num_sg * used_page_size.
*
*/
struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg)
{
struct ib_mr *mr;
if (!pd->device->create_mr)
return ERR_PTR(-ENOSYS);
mr = pd->device->create_mr(pd, mr_init_attr);
if (pd->device->alloc_mr) {
mr = pd->device->alloc_mr(pd, mr_type, max_num_sg);
} else {
if (mr_type != IB_MR_TYPE_MEM_REG ||
!pd->device->alloc_fast_reg_mr)
return ERR_PTR(-ENOSYS);
mr = pd->device->alloc_fast_reg_mr(pd, max_num_sg);
}
if (!IS_ERR(mr)) {
mr->device = pd->device;
@ -1255,7 +1272,7 @@ struct ib_mr *ib_create_mr(struct ib_pd *pd,
return mr;
}
EXPORT_SYMBOL(ib_create_mr);
EXPORT_SYMBOL(ib_alloc_mr);
struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
{

2
drivers/infiniband/hw/mlx5/main.c
View File

@ -1502,7 +1502,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
dev->ib_dev.process_mad = mlx5_ib_process_mad;
dev->ib_dev.create_mr = mlx5_ib_create_mr;
dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr;
dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;

5
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -573,8 +573,9 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index,
int npages, int zap);
int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
int max_page_list_len);
struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,

17
drivers/infiniband/hw/mlx5/mr.c
View File

@ -1244,14 +1244,15 @@ int mlx5_ib_dereg_mr(struct ib_mr *ibmr)
return 0;
}
struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr)
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg)
{
struct mlx5_ib_dev *dev = to_mdev(pd->device);
struct mlx5_create_mkey_mbox_in *in;
struct mlx5_ib_mr *mr;
int access_mode, err;
int ndescs = roundup(mr_init_attr->max_reg_descriptors, 4);
int ndescs = roundup(max_num_sg, 4);
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
@ -1267,9 +1268,11 @@ struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
in->seg.xlt_oct_size = cpu_to_be32(ndescs);
in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn);
access_mode = MLX5_ACCESS_MODE_MTT;
if (mr_init_attr->flags & IB_MR_SIGNATURE_EN) {
if (mr_type == IB_MR_TYPE_MEM_REG) {
access_mode = MLX5_ACCESS_MODE_MTT;
in->seg.log2_page_size = PAGE_SHIFT;
} else if (mr_type == IB_MR_TYPE_SIGNATURE) {
u32 psv_index[2];
in->seg.flags_pd = cpu_to_be32(be32_to_cpu(in->seg.flags_pd) |
@ -1295,6 +1298,10 @@ struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd,
mr->sig->sig_err_exists = false;
/* Next UMR, Arm SIGERR */
++mr->sig->sigerr_count;
} else {
mlx5_ib_warn(dev, "Invalid mr type %d\n", mr_type);
err = -EINVAL;
goto err_free_in;
}
in->seg.flags = MLX5_PERM_UMR_EN | access_mode;

6
drivers/infiniband/ulp/iser/iser_verbs.c
View File

@ -284,9 +284,7 @@ iser_alloc_pi_ctx(struct ib_device *ib_device, struct ib_pd *pd,
struct fast_reg_descriptor *desc)
{
struct iser_pi_context *pi_ctx = NULL;
struct ib_mr_init_attr mr_init_attr = {.max_reg_descriptors = 2,
.flags = IB_MR_SIGNATURE_EN};
int ret = 0;
int ret;
desc->pi_ctx = kzalloc(sizeof(*desc->pi_ctx), GFP_KERNEL);
if (!desc->pi_ctx)
@ -309,7 +307,7 @@ iser_alloc_pi_ctx(struct ib_device *ib_device, struct ib_pd *pd,
}
desc->reg_indicators |= ISER_PROT_KEY_VALID;
pi_ctx->sig_mr = ib_create_mr(pd, &mr_init_attr);
pi_ctx->sig_mr = ib_alloc_mr(pd, IB_MR_TYPE_SIGNATURE, 2);
if (IS_ERR(pi_ctx->sig_mr)) {
ret = PTR_ERR(pi_ctx->sig_mr);
goto sig_mr_failure;

6
drivers/infiniband/ulp/isert/ib_isert.c
View File

@ -508,7 +508,6 @@ isert_create_pi_ctx(struct fast_reg_descriptor *desc,
struct ib_device *device,
struct ib_pd *pd)
{
struct ib_mr_init_attr mr_init_attr;
struct pi_context *pi_ctx;
int ret;
@ -536,10 +535,7 @@ isert_create_pi_ctx(struct fast_reg_descriptor *desc,
}
desc->ind |= ISERT_PROT_KEY_VALID;
memset(&mr_init_attr, 0, sizeof(mr_init_attr));
mr_init_attr.max_reg_descriptors = 2;
mr_init_attr.flags |= IB_MR_SIGNATURE_EN;
pi_ctx->sig_mr = ib_create_mr(pd, &mr_init_attr);
pi_ctx->sig_mr = ib_alloc_mr(pd, IB_MR_TYPE_SIGNATURE, 2);
if (IS_ERR(pi_ctx->sig_mr)) {
isert_err("Failed to allocate signature enabled mr err=%ld\n",
PTR_ERR(pi_ctx->sig_mr));

37
include/rdma/ib_verbs.h
View File

@ -557,20 +557,18 @@ __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
*/
__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
enum ib_mr_create_flags {
IB_MR_SIGNATURE_EN = 1,
};
/**
* ib_mr_init_attr - Memory region init attributes passed to routine
* ib_create_mr.
* @max_reg_descriptors: max number of registration descriptors that
* may be used with registration work requests.
* @flags: MR creation flags bit mask.
* enum ib_mr_type - memory region type
* @IB_MR_TYPE_MEM_REG: memory region that is used for
* normal registration
* @IB_MR_TYPE_SIGNATURE: memory region that is used for
* signature operations (data-integrity
* capable regions)
*/
struct ib_mr_init_attr {
int max_reg_descriptors;
u32 flags;
enum ib_mr_type {
IB_MR_TYPE_MEM_REG,
IB_MR_TYPE_SIGNATURE,
};
/**
@ -1671,8 +1669,9 @@ struct ib_device {
int (*query_mr)(struct ib_mr *mr,
struct ib_mr_attr *mr_attr);
int (*dereg_mr)(struct ib_mr *mr);
struct ib_mr * (*create_mr)(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
int max_page_list_len);
struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
@ -2817,15 +2816,9 @@ int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
*/
int ib_dereg_mr(struct ib_mr *mr);
/**
* ib_create_mr - Allocates a memory region that may be used for
* signature handover operations.
* @pd: The protection domain associated with the region.
* @mr_init_attr: memory region init attributes.
*/
struct ib_mr *ib_create_mr(struct ib_pd *pd,
struct ib_mr_init_attr *mr_init_attr);
struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
/**
* ib_alloc_fast_reg_mr - Allocates memory region usable with the