[PATCH rdma-next 01/18] RDMA/core: Introduce ib_device_ops

Kamal Heib
2018-10-09T16:28:52Z

This change introduce the ib_device_ops structure that defines all the
InfiniBand device operations, providers will need to define the
supported operations and assigning them using ib_set_device_ops().

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
---
drivers/infiniband/core/device.c | 98 +++++++++++++++++
include/rdma/ib_verbs.h | 223 +++++++++++++++++++++++++++++++++++++++
2 files changed, 321 insertions(+)

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index d105b9b2d118..8839ba876def 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -1147,6 +1147,104 @@ struct net_device *ib_get_net_dev_by_params(struct ib_device *dev,
}
EXPORT_SYMBOL(ib_get_net_dev_by_params);

+void ib_set_device_ops(struct ib_device *dev, struct ib_device_ops *ops)
+{
+ struct ib_device_ops *dev_ops = &dev->ops;
+
+#define SET_DEVICE_OP(ptr, name) \
+ do { \
+ if (ops->name) \
+ (ptr)->name = ops->name; \
+ } while (0)
+
+ SET_DEVICE_OP(dev_ops, query_device);
+ SET_DEVICE_OP(dev_ops, modify_device);
+ SET_DEVICE_OP(dev_ops, get_dev_fw_str);
+ SET_DEVICE_OP(dev_ops, get_vector_affinity);
+ SET_DEVICE_OP(dev_ops, query_port);
+ SET_DEVICE_OP(dev_ops, modify_port);
+ SET_DEVICE_OP(dev_ops, get_port_immutable);
+ SET_DEVICE_OP(dev_ops, get_link_layer);
+ SET_DEVICE_OP(dev_ops, get_netdev);
+ SET_DEVICE_OP(dev_ops, alloc_rdma_netdev);
+ SET_DEVICE_OP(dev_ops, query_gid);
+ SET_DEVICE_OP(dev_ops, add_gid);
+ SET_DEVICE_OP(dev_ops, del_gid);
+ SET_DEVICE_OP(dev_ops, query_pkey);
+ SET_DEVICE_OP(dev_ops, alloc_ucontext);
+ SET_DEVICE_OP(dev_ops, dealloc_ucontext);
+ SET_DEVICE_OP(dev_ops, mmap);
+ SET_DEVICE_OP(dev_ops, alloc_pd);
+ SET_DEVICE_OP(dev_ops, dealloc_pd);
+ SET_DEVICE_OP(dev_ops, create_ah);
+ SET_DEVICE_OP(dev_ops, modify_ah);
+ SET_DEVICE_OP(dev_ops, query_ah);
+ SET_DEVICE_OP(dev_ops, destroy_ah);
+ SET_DEVICE_OP(dev_ops, create_srq);
+ SET_DEVICE_OP(dev_ops, modify_srq);
+ SET_DEVICE_OP(dev_ops, query_srq);
+ SET_DEVICE_OP(dev_ops, destroy_srq);
+ SET_DEVICE_OP(dev_ops, post_srq_recv);
+ SET_DEVICE_OP(dev_ops, create_qp);
+ SET_DEVICE_OP(dev_ops, modify_qp);
+ SET_DEVICE_OP(dev_ops, query_qp);
+ SET_DEVICE_OP(dev_ops, destroy_qp);
+ SET_DEVICE_OP(dev_ops, post_send);
+ SET_DEVICE_OP(dev_ops, post_recv);
+ SET_DEVICE_OP(dev_ops, create_cq);
+ SET_DEVICE_OP(dev_ops, modify_cq);
+ SET_DEVICE_OP(dev_ops, destroy_cq);
+ SET_DEVICE_OP(dev_ops, resize_cq);
+ SET_DEVICE_OP(dev_ops, poll_cq);
+ SET_DEVICE_OP(dev_ops, peek_cq);
+ SET_DEVICE_OP(dev_ops, req_notify_cq);
+ SET_DEVICE_OP(dev_ops, req_ncomp_notif);
+ SET_DEVICE_OP(dev_ops, get_dma_mr);
+ SET_DEVICE_OP(dev_ops, reg_user_mr);
+ SET_DEVICE_OP(dev_ops, rereg_user_mr);
+ SET_DEVICE_OP(dev_ops, dereg_mr);
+ SET_DEVICE_OP(dev_ops, alloc_mr);
+ SET_DEVICE_OP(dev_ops, map_mr_sg);
+ SET_DEVICE_OP(dev_ops, alloc_mw);
+ SET_DEVICE_OP(dev_ops, dealloc_mw);
+ SET_DEVICE_OP(dev_ops, alloc_fmr);
+ SET_DEVICE_OP(dev_ops, map_phys_fmr);
+ SET_DEVICE_OP(dev_ops, unmap_fmr);
+ SET_DEVICE_OP(dev_ops, dealloc_fmr);
+ SET_DEVICE_OP(dev_ops, attach_mcast);
+ SET_DEVICE_OP(dev_ops, detach_mcast);
+ SET_DEVICE_OP(dev_ops, process_mad);
+ SET_DEVICE_OP(dev_ops, alloc_xrcd);
+ SET_DEVICE_OP(dev_ops, dealloc_xrcd);
+ SET_DEVICE_OP(dev_ops, create_flow);
+ SET_DEVICE_OP(dev_ops, destroy_flow);
+ SET_DEVICE_OP(dev_ops, check_mr_status);
+ SET_DEVICE_OP(dev_ops, disassociate_ucontext);
+ SET_DEVICE_OP(dev_ops, drain_rq);
+ SET_DEVICE_OP(dev_ops, drain_sq);
+ SET_DEVICE_OP(dev_ops, set_vf_link_state);
+ SET_DEVICE_OP(dev_ops, get_vf_config);
+ SET_DEVICE_OP(dev_ops, get_vf_stats);
+ SET_DEVICE_OP(dev_ops, set_vf_guid);
+ SET_DEVICE_OP(dev_ops, create_wq);
+ SET_DEVICE_OP(dev_ops, destroy_wq);
+ SET_DEVICE_OP(dev_ops, modify_wq);
+ SET_DEVICE_OP(dev_ops, create_rwq_ind_table);
+ SET_DEVICE_OP(dev_ops, destroy_rwq_ind_table);
+ SET_DEVICE_OP(dev_ops, create_flow_action_esp);
+ SET_DEVICE_OP(dev_ops, destroy_flow_action);
+ SET_DEVICE_OP(dev_ops, modify_flow_action_esp);
+ SET_DEVICE_OP(dev_ops, alloc_dm);
+ SET_DEVICE_OP(dev_ops, dealloc_dm);
+ SET_DEVICE_OP(dev_ops, reg_dm_mr);
+ SET_DEVICE_OP(dev_ops, create_counters);
+ SET_DEVICE_OP(dev_ops, destroy_counters);
+ SET_DEVICE_OP(dev_ops, read_counters);
+ SET_DEVICE_OP(dev_ops, alloc_hw_stats);
+ SET_DEVICE_OP(dev_ops, get_hw_stats);
+}
+EXPORT_SYMBOL(ib_set_device_ops);
+
static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = {
[RDMA_NL_LS_OP_RESOLVE] = {
.doit = ib_nl_handle_resolve_resp,
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7ce617d77f8f..664b957e7855 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2246,10 +2246,232 @@ struct ib_counters_read_attr {

struct uverbs_attr_bundle;

+/**
+ * struct ib_device_ops - InfiniBand device operations
+ * This structure defines all the InfiniBand device operations, providers will
+ * need to define the supported operations, otherwise they will be set to null.
+ */
+struct ib_device_ops {
+ int (*query_device)(struct ib_device *device,
+ struct ib_device_attr *device_attr,
+ struct ib_udata *udata);
+ int (*modify_device)(struct ib_device *device,
+ int device_modify_mask,
+ struct ib_device_modify *device_modify);
+ void (*get_dev_fw_str)(struct ib_device *, char *str);
+ const struct cpumask * (*get_vector_affinity)(struct ib_device *ibdev,
+ int comp_vector);
+ int (*query_port)(struct ib_device *device,
+ u8 port_num,
+ struct ib_port_attr *port_attr);
+ int (*modify_port)(struct ib_device *device,
+ u8 port_num, int port_modify_mask,
+ struct ib_port_modify *port_modify);
+ int (*get_port_immutable)(struct ib_device *, u8,
+ struct ib_port_immutable *);
+ enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
+ u8 port_num);
+ struct net_device * (*get_netdev)(struct ib_device *device,
+ u8 port_num);
+ struct net_device * (*alloc_rdma_netdev)(struct ib_device *device,
+ u8 port_num,
+ enum rdma_netdev_t type,
+ const char *name,
+ unsigned char name_assign_type,
+ void (*setup)(struct net_device *));
+ int (*query_gid)(struct ib_device *device,
+ u8 port_num, int index,
+ union ib_gid *gid);
+ int (*add_gid)(const struct ib_gid_attr *attr,
+ void **context);
+ int (*del_gid)(const struct ib_gid_attr *attr,
+ void **context);
+ int (*query_pkey)(struct ib_device *device,
+ u8 port_num, u16 index, u16 *pkey);
+ struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
+ struct ib_udata *udata);
+ int (*dealloc_ucontext)(struct ib_ucontext *context);
+ int (*mmap)(struct ib_ucontext *context,
+ struct vm_area_struct *vma);
+ struct ib_pd * (*alloc_pd)(struct ib_device *device,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+ int (*dealloc_pd)(struct ib_pd *pd);
+ struct ib_ah * (*create_ah)(struct ib_pd *pd,
+ struct rdma_ah_attr *ah_attr,
+ struct ib_udata *udata);
+ int (*modify_ah)(struct ib_ah *ah,
+ struct rdma_ah_attr *ah_attr);
+ int (*query_ah)(struct ib_ah *ah,
+ struct rdma_ah_attr *ah_attr);
+ int (*destroy_ah)(struct ib_ah *ah);
+ struct ib_srq * (*create_srq)(struct ib_pd *pd,
+ struct ib_srq_init_attr *srq_init_attr,
+ struct ib_udata *udata);
+ int (*modify_srq)(struct ib_srq *srq,
+ struct ib_srq_attr *srq_attr,
+ enum ib_srq_attr_mask srq_attr_mask,
+ struct ib_udata *udata);
+ int (*query_srq)(struct ib_srq *srq,
+ struct ib_srq_attr *srq_attr);
+ int (*destroy_srq)(struct ib_srq *srq);
+ int (*post_srq_recv)(struct ib_srq *srq,
+ const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr);
+ struct ib_qp * (*create_qp)(struct ib_pd *pd,
+ struct ib_qp_init_attr *qp_init_attr,
+ struct ib_udata *udata);
+ int (*modify_qp)(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_udata *udata);
+ int (*query_qp)(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr);
+ int (*destroy_qp)(struct ib_qp *qp);
+ int (*post_send)(struct ib_qp *qp,
+ const struct ib_send_wr *send_wr,
+ const struct ib_send_wr **bad_send_wr);
+ int (*post_recv)(struct ib_qp *qp,
+ const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr);
+ struct ib_cq * (*create_cq)(struct ib_device *device,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+ int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
+ u16 cq_period);
+ int (*destroy_cq)(struct ib_cq *cq);
+ int (*resize_cq)(struct ib_cq *cq, int cqe,
+ struct ib_udata *udata);
+ int (*poll_cq)(struct ib_cq *cq, int num_entries,
+ struct ib_wc *wc);
+ int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
+ int (*req_notify_cq)(struct ib_cq *cq,
+ enum ib_cq_notify_flags flags);
+ int (*req_ncomp_notif)(struct ib_cq *cq,
+ int wc_cnt);
+ struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
+ int mr_access_flags);
+ struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
+ u64 start, u64 length,
+ u64 virt_addr,
+ int mr_access_flags,
+ struct ib_udata *udata);
+ int (*rereg_user_mr)(struct ib_mr *mr,
+ int flags,
+ u64 start, u64 length,
+ u64 virt_addr,
+ int mr_access_flags,
+ struct ib_pd *pd,
+ struct ib_udata *udata);
+ int (*dereg_mr)(struct ib_mr *mr);
+ struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
+ enum ib_mr_type mr_type,
+ u32 max_num_sg);
+ int (*map_mr_sg)(struct ib_mr *mr,
+ struct scatterlist *sg,
+ int sg_nents,
+ unsigned int *sg_offset);
+ 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);
+ struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
+ int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr);
+ int (*map_phys_fmr)(struct ib_fmr *fmr,
+ u64 *page_list, int list_len,
+ u64 iova);
+ int (*unmap_fmr)(struct list_head *fmr_list);
+ int (*dealloc_fmr)(struct ib_fmr *fmr);
+ 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 (*process_mad)(struct ib_device *device,
+ int process_mad_flags,
+ u8 port_num,
+ const struct ib_wc *in_wc,
+ const struct ib_grh *in_grh,
+ const struct ib_mad_hdr *in_mad,
+ size_t in_mad_size,
+ struct ib_mad_hdr *out_mad,
+ size_t *out_mad_size,
+ u16 *out_mad_pkey_index);
+ struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
+ struct ib_ucontext *ucontext,
+ struct ib_udata *udata);
+ int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
+ struct ib_flow * (*create_flow)(struct ib_qp *qp,
+ struct ib_flow_attr
+ *flow_attr,
+ int domain,
+ struct ib_udata *udata);
+ int (*destroy_flow)(struct ib_flow *flow_id);
+ int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
+ struct ib_mr_status *mr_status);
+ void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
+ void (*drain_rq)(struct ib_qp *qp);
+ void (*drain_sq)(struct ib_qp *qp);
+ int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port,
+ int state);
+ int (*get_vf_config)(struct ib_device *device, int vf, u8 port,
+ struct ifla_vf_info *ivf);
+ int (*get_vf_stats)(struct ib_device *device, int vf, u8 port,
+ struct ifla_vf_stats *stats);
+ int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid,
+ int type);
+ struct ib_wq * (*create_wq)(struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr,
+ struct ib_udata *udata);
+ int (*destroy_wq)(struct ib_wq *wq);
+ int (*modify_wq)(struct ib_wq *wq,
+ 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_flow_action * (*create_flow_action_esp)(struct ib_device *device,
+ const struct ib_flow_action_attrs_esp *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*destroy_flow_action)(struct ib_flow_action *action);
+ int (*modify_flow_action_esp)(struct ib_flow_action *action,
+ const struct ib_flow_action_attrs_esp *attr,
+ struct uverbs_attr_bundle *attrs);
+ struct ib_dm * (*alloc_dm)(struct ib_device *device,
+ struct ib_ucontext *context,
+ struct ib_dm_alloc_attr *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*dealloc_dm)(struct ib_dm *dm);
+ struct ib_mr * (*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm,
+ struct ib_dm_mr_attr *attr,
+ struct uverbs_attr_bundle *attrs);
+ struct ib_counters * (*create_counters)(struct ib_device *device,
+ struct uverbs_attr_bundle *attrs);
+ int (*destroy_counters)(struct ib_counters *counters);
+ int (*read_counters)(struct ib_counters *counters,
+ struct ib_counters_read_attr *counters_read_attr,
+ struct uverbs_attr_bundle *attrs);
+ struct rdma_hw_stats * (*alloc_hw_stats)(struct ib_device *device,
+ u8 port_num);
+ int (*get_hw_stats)(struct ib_device *device,
+ struct rdma_hw_stats *stats,
+ u8 port, int index);
+};
+
struct ib_device {
/* Do not access @dma_device directly from ULP nor from HW drivers. */
struct device *dma_device;

+ struct ib_device_ops ops;
+
+
char name[IB_DEVICE_NAME_MAX];

struct list_head event_handler_list;
@@ -2636,6 +2858,7 @@ void ib_unregister_client(struct ib_client *client);
void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
void ib_set_client_data(struct ib_device *device, struct ib_client *client,
void *data);
+void ib_set_device_ops(struct ib_device *device, struct ib_device_ops *ops);

#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma,
--
2.14.4