Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-28 23:21:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

IB/mlx5: Add Receive Work Queue Indirection table operations

Browse Source 
Some mlx5 based hardwares support a RQ table object. This RQ table
points to a few RQ objects. We implement the receive work queue
indirection table API (create and destroy) by using this hardware
object.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yishai Hadas 2016-05-23 15:20:53 +03:00 committed by Doug Ledford
parent de019a9404
commit c5f9092936
4 changed files with 102 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/infiniband/hw/mlx5/main.c
View File

@ -2453,12 +2453,16 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.create_wq = mlx5_ib_create_wq;
dev->ib_dev.modify_wq = mlx5_ib_modify_wq;
dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq;
dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
dev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ);
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
}
err = init_node_data(dev);
if (err)

14
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -247,6 +247,11 @@ enum {
MLX5_WQ_KERNEL
};
struct mlx5_ib_rwq_ind_table {
struct ib_rwq_ind_table ib_rwq_ind_tbl;
u32 rqtn;
};
/*
* Connect-IB can trigger up to four concurrent pagefaults
* per-QP.
@ -657,6 +662,11 @@ static inline struct mlx5_ib_rwq *to_mrwq(struct ib_wq *ibwq)
return container_of(ibwq, struct mlx5_ib_rwq, ibwq);
}
static inline struct mlx5_ib_rwq_ind_table *to_mrwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
return container_of(ib_rwq_ind_tbl, struct mlx5_ib_rwq_ind_table, ib_rwq_ind_tbl);
}
static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
{
return container_of(msrq, struct mlx5_ib_srq, msrq);
@ -797,6 +807,10 @@ struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
int mlx5_ib_destroy_wq(struct ib_wq *wq);
int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
u32 wq_attr_mask, struct ib_udata *udata);
struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
struct ib_rwq_ind_table_init_attr *init_attr,
struct ib_udata *udata);
int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
extern struct workqueue_struct *mlx5_ib_page_fault_wq;

78
drivers/infiniband/hw/mlx5/qp.c
View File

@ -4415,6 +4415,84 @@ int mlx5_ib_destroy_wq(struct ib_wq *wq)
return 0;
}
struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
struct ib_rwq_ind_table_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(device);
struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
int sz = 1 << init_attr->log_ind_tbl_size;
struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
size_t min_resp_len;
int inlen;
int err;
int i;
u32 *in;
void *rqtc;
if (udata->inlen > 0 &&
!ib_is_udata_cleared(udata, 0,
udata->inlen))
return ERR_PTR(-EOPNOTSUPP);
min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
if (udata->outlen && udata->outlen < min_resp_len)
return ERR_PTR(-EINVAL);
rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
if (!rwq_ind_tbl)
return ERR_PTR(-ENOMEM);
inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
in = mlx5_vzalloc(inlen);
if (!in) {
err = -ENOMEM;
goto err;
}
rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
for (i = 0; i < sz; i++)
MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
kvfree(in);
if (err)
goto err;
rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
if (udata->outlen) {
resp.response_length = offsetof(typeof(resp), response_length) +
sizeof(resp.response_length);
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err)
goto err_copy;
}
return &rwq_ind_tbl->ib_rwq_ind_tbl;
err_copy:
mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
err:
kfree(rwq_ind_tbl);
return ERR_PTR(err);
}
int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
kfree(rwq_ind_tbl);
return 0;
}
int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
u32 wq_attr_mask, struct ib_udata *udata)
{

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

@ -179,6 +179,11 @@ struct mlx5_ib_create_wq_resp {
__u32 reserved;
};
struct mlx5_ib_create_rwq_ind_tbl_resp {
__u32 response_length;
__u32 reserved;
};
struct mlx5_ib_modify_wq {
__u32 comp_mask;
__u32 reserved;