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IB/core: Introduce Receive Work Queue indirection table

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Introduce Receive Work Queue (WQ) indirection table.
This object can be used to spread incoming traffic to different
receive Work Queues.

A Receive WQ indirection table points to variable size of WQs.
This table is given to a QP in downstream patches.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimerg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yishai Hadas
2016-05-23 15:20:51 +03:00
committed by Doug Ledford
parent 79b20a6c30
commit 6d39786bf1
2 changed files with 85 additions and 0 deletions
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23
include/rdma/ib_verbs.h
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@@ -1473,6 +1473,21 @@ struct ib_wq_attr {
enum ib_wq_state curr_wq_state;
};
struct ib_rwq_ind_table {
struct ib_device *device;
struct ib_uobject *uobject;
atomic_t usecnt;
u32 ind_tbl_num;
u32 log_ind_tbl_size;
struct ib_wq **ind_tbl;
};
struct ib_rwq_ind_table_init_attr {
u32 log_ind_tbl_size;
/* Each entry is a pointer to Receive Work Queue */
struct ib_wq **ind_tbl;
};
struct ib_qp {
struct ib_device *device;
struct ib_pd *pd;
@@ -1974,6 +1989,10 @@ struct ib_device {
struct ib_wq_attr *attr,
u32 wq_attr_mask,
struct ib_udata *udata);
struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device,
struct ib_rwq_ind_table_init_attr *init_attr,
struct ib_udata *udata);
int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table);
struct ib_dma_mapping_ops *dma_ops;
struct module *owner;
@@ -3224,6 +3243,10 @@ struct ib_wq *ib_create_wq(struct ib_pd *pd,
int ib_destroy_wq(struct ib_wq *wq);
int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
u32 wq_attr_mask);
struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device,
struct ib_rwq_ind_table_init_attr*
wq_ind_table_init_attr);
int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
unsigned int *sg_offset, unsigned int page_size);