IB/rdmavt: Add per verb driver callback checking
For each verb validate that all requirements for driver callbacks are met. If a function is called without checking for a valid pointer, it is a required function. Also document what each callback function does. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dennis Dalessandro
Doug Ledford
Родитель
90793f7179
Коммит
1348d706f2
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@ -325,12 +325,375 @@ static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num,
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return 0;
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}
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/*
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* Check driver override. If driver passes a value use it, otherwise we use our
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* own value.
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*/
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#define CHECK_DRIVER_OVERRIDE(rdi, x) \
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rdi->ibdev.x = rdi->ibdev.x ? : rvt_ ##x
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enum {
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MISC,
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QUERY_DEVICE,
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MODIFY_DEVICE,
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QUERY_PORT,
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MODIFY_PORT,
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QUERY_PKEY,
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QUERY_GID,
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ALLOC_UCONTEXT,
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DEALLOC_UCONTEXT,
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GET_PORT_IMMUTABLE,
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CREATE_QP,
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MODIFY_QP,
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DESTROY_QP,
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QUERY_QP,
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POST_SEND,
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POST_RECV,
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POST_SRQ_RECV,
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CREATE_AH,
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DESTROY_AH,
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MODIFY_AH,
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QUERY_AH,
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CREATE_SRQ,
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MODIFY_SRQ,
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DESTROY_SRQ,
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QUERY_SRQ,
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ATTACH_MCAST,
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DETACH_MCAST,
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GET_DMA_MR,
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REG_USER_MR,
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DEREG_MR,
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ALLOC_MR,
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ALLOC_FMR,
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MAP_PHYS_FMR,
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UNMAP_FMR,
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DEALLOC_FMR,
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MMAP,
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CREATE_CQ,
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DESTROY_CQ,
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POLL_CQ,
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REQ_NOTFIY_CQ,
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RESIZE_CQ,
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ALLOC_PD,
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DEALLOC_PD,
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_VERB_IDX_MAX /* Must always be last! */
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};
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static inline int check_driver_override(struct rvt_dev_info *rdi,
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size_t offset, void *func)
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{
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if (!*(void **)((void *)&rdi->ibdev + offset)) {
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*(void **)((void *)&rdi->ibdev + offset) = func;
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return 0;
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}
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return 1;
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}
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static int check_support(struct rvt_dev_info *rdi, int verb)
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{
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switch (verb) {
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case MISC:
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/*
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* These functions are not part of verbs specifically but are
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* required for rdmavt to function.
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*/
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if ((!rdi->driver_f.port_callback) ||
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(!rdi->driver_f.get_card_name) ||
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(!rdi->driver_f.get_pci_dev))
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return -EINVAL;
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break;
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case QUERY_DEVICE:
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check_driver_override(rdi, offsetof(struct ib_device,
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query_device),
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rvt_query_device);
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break;
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case MODIFY_DEVICE:
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/*
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* rdmavt does not support modify device currently drivers must
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* provide.
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*/
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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modify_device),
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rvt_modify_device))
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return -EOPNOTSUPP;
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break;
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case QUERY_PORT:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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query_port),
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rvt_query_port))
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if (!rdi->driver_f.query_port_state)
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return -EINVAL;
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break;
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case MODIFY_PORT:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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modify_port),
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rvt_modify_port))
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if (!rdi->driver_f.cap_mask_chg ||
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!rdi->driver_f.shut_down_port)
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return -EINVAL;
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break;
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case QUERY_PKEY:
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check_driver_override(rdi, offsetof(struct ib_device,
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query_pkey),
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rvt_query_pkey);
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break;
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case QUERY_GID:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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query_gid),
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rvt_query_gid))
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if (!rdi->driver_f.get_guid_be)
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return -EINVAL;
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break;
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case ALLOC_UCONTEXT:
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check_driver_override(rdi, offsetof(struct ib_device,
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alloc_ucontext),
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rvt_alloc_ucontext);
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break;
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case DEALLOC_UCONTEXT:
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check_driver_override(rdi, offsetof(struct ib_device,
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dealloc_ucontext),
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rvt_dealloc_ucontext);
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break;
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case GET_PORT_IMMUTABLE:
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check_driver_override(rdi, offsetof(struct ib_device,
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get_port_immutable),
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rvt_get_port_immutable);
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break;
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case CREATE_QP:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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create_qp),
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rvt_create_qp))
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if (!rdi->driver_f.qp_priv_alloc ||
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!rdi->driver_f.qp_priv_free ||
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!rdi->driver_f.notify_qp_reset ||
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!rdi->driver_f.flush_qp_waiters ||
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!rdi->driver_f.stop_send_queue ||
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!rdi->driver_f.quiesce_qp)
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return -EINVAL;
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break;
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case MODIFY_QP:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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modify_qp),
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rvt_modify_qp))
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if (!rdi->driver_f.notify_qp_reset ||
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!rdi->driver_f.schedule_send ||
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!rdi->driver_f.get_pmtu_from_attr ||
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!rdi->driver_f.flush_qp_waiters ||
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!rdi->driver_f.stop_send_queue ||
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!rdi->driver_f.quiesce_qp ||
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!rdi->driver_f.notify_error_qp ||
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!rdi->driver_f.mtu_from_qp ||
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!rdi->driver_f.mtu_to_path_mtu ||
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!rdi->driver_f.shut_down_port ||
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!rdi->driver_f.cap_mask_chg)
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return -EINVAL;
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break;
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case DESTROY_QP:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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destroy_qp),
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rvt_destroy_qp))
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if (!rdi->driver_f.qp_priv_free ||
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!rdi->driver_f.notify_qp_reset ||
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!rdi->driver_f.flush_qp_waiters ||
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!rdi->driver_f.stop_send_queue ||
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!rdi->driver_f.quiesce_qp)
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return -EINVAL;
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break;
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case QUERY_QP:
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check_driver_override(rdi, offsetof(struct ib_device,
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query_qp),
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rvt_query_qp);
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break;
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case POST_SEND:
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if (!check_driver_override(rdi, offsetof(struct ib_device,
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post_send),
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rvt_post_send))
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if (!rdi->driver_f.schedule_send ||
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!rdi->driver_f.do_send)
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return -EINVAL;
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break;
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case POST_RECV:
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check_driver_override(rdi, offsetof(struct ib_device,
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post_recv),
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rvt_post_recv);
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break;
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case POST_SRQ_RECV:
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check_driver_override(rdi, offsetof(struct ib_device,
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post_srq_recv),
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rvt_post_srq_recv);
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break;
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case CREATE_AH:
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check_driver_override(rdi, offsetof(struct ib_device,
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create_ah),
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rvt_create_ah);
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break;
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case DESTROY_AH:
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check_driver_override(rdi, offsetof(struct ib_device,
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destroy_ah),
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rvt_destroy_ah);
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break;
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case MODIFY_AH:
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check_driver_override(rdi, offsetof(struct ib_device,
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modify_ah),
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rvt_modify_ah);
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break;
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case QUERY_AH:
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check_driver_override(rdi, offsetof(struct ib_device,
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query_ah),
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rvt_query_ah);
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break;
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case CREATE_SRQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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create_srq),
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rvt_create_srq);
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break;
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case MODIFY_SRQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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modify_srq),
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rvt_modify_srq);
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break;
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case DESTROY_SRQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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destroy_srq),
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rvt_destroy_srq);
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break;
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case QUERY_SRQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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query_srq),
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rvt_query_srq);
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break;
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case ATTACH_MCAST:
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check_driver_override(rdi, offsetof(struct ib_device,
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attach_mcast),
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rvt_attach_mcast);
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break;
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case DETACH_MCAST:
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check_driver_override(rdi, offsetof(struct ib_device,
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detach_mcast),
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rvt_detach_mcast);
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break;
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case GET_DMA_MR:
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check_driver_override(rdi, offsetof(struct ib_device,
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get_dma_mr),
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rvt_get_dma_mr);
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break;
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case REG_USER_MR:
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check_driver_override(rdi, offsetof(struct ib_device,
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reg_user_mr),
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rvt_reg_user_mr);
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break;
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case DEREG_MR:
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check_driver_override(rdi, offsetof(struct ib_device,
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dereg_mr),
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rvt_dereg_mr);
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break;
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case ALLOC_FMR:
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check_driver_override(rdi, offsetof(struct ib_device,
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alloc_fmr),
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rvt_alloc_fmr);
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break;
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case ALLOC_MR:
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check_driver_override(rdi, offsetof(struct ib_device,
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alloc_mr),
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rvt_alloc_mr);
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break;
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case MAP_PHYS_FMR:
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check_driver_override(rdi, offsetof(struct ib_device,
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map_phys_fmr),
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rvt_map_phys_fmr);
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break;
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case UNMAP_FMR:
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check_driver_override(rdi, offsetof(struct ib_device,
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unmap_fmr),
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rvt_unmap_fmr);
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break;
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case DEALLOC_FMR:
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check_driver_override(rdi, offsetof(struct ib_device,
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dealloc_fmr),
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rvt_dealloc_fmr);
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break;
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case MMAP:
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check_driver_override(rdi, offsetof(struct ib_device,
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mmap),
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rvt_mmap);
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break;
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case CREATE_CQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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create_cq),
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rvt_create_cq);
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break;
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case DESTROY_CQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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destroy_cq),
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rvt_destroy_cq);
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break;
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case POLL_CQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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poll_cq),
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rvt_poll_cq);
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break;
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case REQ_NOTFIY_CQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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req_notify_cq),
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rvt_req_notify_cq);
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break;
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case RESIZE_CQ:
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check_driver_override(rdi, offsetof(struct ib_device,
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resize_cq),
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rvt_resize_cq);
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break;
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case ALLOC_PD:
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check_driver_override(rdi, offsetof(struct ib_device,
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alloc_pd),
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rvt_alloc_pd);
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break;
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case DEALLOC_PD:
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check_driver_override(rdi, offsetof(struct ib_device,
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dealloc_pd),
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rvt_dealloc_pd);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/**
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* rvt_register_device - register a driver
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@ -343,35 +706,26 @@ static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num,
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*/
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int rvt_register_device(struct rvt_dev_info *rdi)
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{
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/* Validate that drivers have provided the right information */
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int ret = 0;
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int ret = 0, i;
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if (!rdi)
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return -EINVAL;
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if ((!rdi->driver_f.port_callback) ||
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(!rdi->driver_f.get_card_name) ||
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(!rdi->driver_f.get_pci_dev) ||
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(!rdi->driver_f.check_ah)) {
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pr_err("Driver not supporting req func\n");
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return -EINVAL;
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}
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/*
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* Check to ensure drivers have setup the required helpers for the verbs
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* they want rdmavt to handle
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*/
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for (i = 0; i < _VERB_IDX_MAX; i++)
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if (check_support(rdi, i)) {
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pr_err("Driver support req not met at %d\n", i);
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return -EINVAL;
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}
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/* Once we get past here we can use rvt_pr macros and tracepoints */
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trace_rvt_dbg(rdi, "Driver attempting registration");
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rvt_mmap_init(rdi);
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/* Dev Ops */
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CHECK_DRIVER_OVERRIDE(rdi, query_device);
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CHECK_DRIVER_OVERRIDE(rdi, modify_device);
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CHECK_DRIVER_OVERRIDE(rdi, query_port);
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CHECK_DRIVER_OVERRIDE(rdi, modify_port);
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CHECK_DRIVER_OVERRIDE(rdi, query_pkey);
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CHECK_DRIVER_OVERRIDE(rdi, query_gid);
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CHECK_DRIVER_OVERRIDE(rdi, alloc_ucontext);
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CHECK_DRIVER_OVERRIDE(rdi, dealloc_ucontext);
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CHECK_DRIVER_OVERRIDE(rdi, get_port_immutable);
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/* Queue Pairs */
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ret = rvt_driver_qp_init(rdi);
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if (ret) {
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@ -379,33 +733,15 @@ int rvt_register_device(struct rvt_dev_info *rdi)
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return -EINVAL;
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}
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CHECK_DRIVER_OVERRIDE(rdi, create_qp);
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CHECK_DRIVER_OVERRIDE(rdi, modify_qp);
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CHECK_DRIVER_OVERRIDE(rdi, destroy_qp);
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CHECK_DRIVER_OVERRIDE(rdi, query_qp);
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CHECK_DRIVER_OVERRIDE(rdi, post_send);
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CHECK_DRIVER_OVERRIDE(rdi, post_recv);
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CHECK_DRIVER_OVERRIDE(rdi, post_srq_recv);
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/* Address Handle */
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CHECK_DRIVER_OVERRIDE(rdi, create_ah);
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CHECK_DRIVER_OVERRIDE(rdi, destroy_ah);
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CHECK_DRIVER_OVERRIDE(rdi, modify_ah);
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CHECK_DRIVER_OVERRIDE(rdi, query_ah);
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spin_lock_init(&rdi->n_ahs_lock);
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rdi->n_ahs_allocated = 0;
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/* Shared Receive Queue */
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CHECK_DRIVER_OVERRIDE(rdi, create_srq);
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CHECK_DRIVER_OVERRIDE(rdi, modify_srq);
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CHECK_DRIVER_OVERRIDE(rdi, destroy_srq);
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CHECK_DRIVER_OVERRIDE(rdi, query_srq);
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rvt_driver_srq_init(rdi);
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/* Multicast */
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rvt_driver_mcast_init(rdi);
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CHECK_DRIVER_OVERRIDE(rdi, attach_mcast);
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CHECK_DRIVER_OVERRIDE(rdi, detach_mcast);
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/* Mem Region */
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ret = rvt_driver_mr_init(rdi);
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@ -414,35 +750,18 @@ int rvt_register_device(struct rvt_dev_info *rdi)
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goto bail_no_mr;
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}
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CHECK_DRIVER_OVERRIDE(rdi, get_dma_mr);
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CHECK_DRIVER_OVERRIDE(rdi, reg_user_mr);
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CHECK_DRIVER_OVERRIDE(rdi, dereg_mr);
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CHECK_DRIVER_OVERRIDE(rdi, alloc_mr);
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CHECK_DRIVER_OVERRIDE(rdi, alloc_fmr);
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CHECK_DRIVER_OVERRIDE(rdi, map_phys_fmr);
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CHECK_DRIVER_OVERRIDE(rdi, unmap_fmr);
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CHECK_DRIVER_OVERRIDE(rdi, dealloc_fmr);
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CHECK_DRIVER_OVERRIDE(rdi, mmap);
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/* Completion queues */
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ret = rvt_driver_cq_init(rdi);
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if (ret) {
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pr_err("Error in driver CQ init.\n");
|
||||
goto bail_mr;
|
||||
}
|
||||
CHECK_DRIVER_OVERRIDE(rdi, create_cq);
|
||||
CHECK_DRIVER_OVERRIDE(rdi, destroy_cq);
|
||||
CHECK_DRIVER_OVERRIDE(rdi, poll_cq);
|
||||
CHECK_DRIVER_OVERRIDE(rdi, req_notify_cq);
|
||||
CHECK_DRIVER_OVERRIDE(rdi, resize_cq);
|
||||
|
||||
/* DMA Operations */
|
||||
rdi->ibdev.dma_ops =
|
||||
rdi->ibdev.dma_ops ? : &rvt_default_dma_mapping_ops;
|
||||
|
||||
/* Protection Domain */
|
||||
CHECK_DRIVER_OVERRIDE(rdi, alloc_pd);
|
||||
CHECK_DRIVER_OVERRIDE(rdi, dealloc_pd);
|
||||
spin_lock_init(&rdi->n_pds_lock);
|
||||
rdi->n_pds_allocated = 0;
|
||||
|
||||
|
|
|
|||
|
|
@ -208,62 +208,157 @@ struct rvt_dev_info;
|
|||
struct rvt_swqe;
|
||||
struct rvt_driver_provided {
|
||||
/*
|
||||
* The work to create port files in /sys/class Infiniband is different
|
||||
* depending on the driver. This should not be extracted away and
|
||||
* instead drivers are responsible for setting the correct callback for
|
||||
* this.
|
||||
* Which functions are required depends on which verbs rdmavt is
|
||||
* providing and which verbs the driver is overriding. See
|
||||
* check_support() for details.
|
||||
*/
|
||||
|
||||
/* -------------------*/
|
||||
/* Required functions */
|
||||
/* -------------------*/
|
||||
/* Passed to ib core registration. Callback to create syfs files */
|
||||
int (*port_callback)(struct ib_device *, u8, struct kobject *);
|
||||
|
||||
/*
|
||||
* Returns a string to represent the device for which is being
|
||||
* registered. This is primarily used for error and debug messages on
|
||||
* the console.
|
||||
*/
|
||||
const char * (*get_card_name)(struct rvt_dev_info *rdi);
|
||||
|
||||
/*
|
||||
* Returns a pointer to the undelying hardware's PCI device. This is
|
||||
* used to display information as to what hardware is being referenced
|
||||
* in an output message
|
||||
*/
|
||||
struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi);
|
||||
unsigned (*free_all_qps)(struct rvt_dev_info *rdi);
|
||||
|
||||
/*
|
||||
* Allocate a private queue pair data structure for driver specific
|
||||
* information which is opaque to rdmavt.
|
||||
*/
|
||||
void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
|
||||
gfp_t gfp);
|
||||
|
||||
/*
|
||||
* Free the driver's private qp structure.
|
||||
*/
|
||||
void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Inform the driver the particular qp in quesiton has been reset so
|
||||
* that it can clean up anything it needs to.
|
||||
*/
|
||||
void (*notify_qp_reset)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Give the driver a notice that there is send work to do. It is up to
|
||||
* the driver to generally push the packets out, this just queues the
|
||||
* work with the driver. There are two variants here. The no_lock
|
||||
* version requires the s_lock not to be held. The other assumes the
|
||||
* s_lock is held.
|
||||
*/
|
||||
void (*schedule_send)(struct rvt_qp *qp);
|
||||
void (*schedule_send_no_lock)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Sometimes rdmavt needs to kick the driver's send progress. That is
|
||||
* done by this call back.
|
||||
*/
|
||||
void (*do_send)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Get a path mtu from the driver based on qp attributes.
|
||||
*/
|
||||
int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
|
||||
struct ib_qp_attr *attr);
|
||||
|
||||
/*
|
||||
* Notify driver that it needs to flush any outstanding IO requests that
|
||||
* are waiting on a qp.
|
||||
*/
|
||||
void (*flush_qp_waiters)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Notify driver to stop its queue of sending packets. Nothing else
|
||||
* should be posted to the queue pair after this has been called.
|
||||
*/
|
||||
void (*stop_send_queue)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Have the drivr drain any in progress operations
|
||||
*/
|
||||
void (*quiesce_qp)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Inform the driver a qp has went to error state.
|
||||
*/
|
||||
void (*notify_error_qp)(struct rvt_qp *qp);
|
||||
|
||||
/*
|
||||
* Get an MTU for a qp.
|
||||
*/
|
||||
u32 (*mtu_from_qp)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
|
||||
u32 pmtu);
|
||||
/*
|
||||
* Convert an mtu to a path mtu
|
||||
*/
|
||||
int (*mtu_to_path_mtu)(u32 mtu);
|
||||
|
||||
/*
|
||||
* Get the guid of a port in big endian byte order
|
||||
*/
|
||||
int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp,
|
||||
int guid_index, __be64 *guid);
|
||||
|
||||
/*
|
||||
* Query driver for the state of the port.
|
||||
*/
|
||||
int (*query_port_state)(struct rvt_dev_info *rdi, u8 port_num,
|
||||
struct ib_port_attr *props);
|
||||
|
||||
/*
|
||||
* Tell driver to shutdown a port
|
||||
*/
|
||||
int (*shut_down_port)(struct rvt_dev_info *rdi, u8 port_num);
|
||||
|
||||
/* Tell driver to send a trap for changed port capabilities */
|
||||
void (*cap_mask_chg)(struct rvt_dev_info *rdi, u8 port_num);
|
||||
|
||||
/*--------------------*/
|
||||
/* Optional functions */
|
||||
/*--------------------*/
|
||||
/*
|
||||
* The following functions can be safely ignored completely. Any use of
|
||||
* these is checked for NULL before blindly calling. Rdmavt should also
|
||||
* be functional if drivers omit these.
|
||||
*/
|
||||
|
||||
/* Called to inform the driver that all qps should now be freed. */
|
||||
unsigned (*free_all_qps)(struct rvt_dev_info *rdi);
|
||||
|
||||
/* Driver specific AH validation */
|
||||
int (*check_ah)(struct ib_device *, struct ib_ah_attr *);
|
||||
|
||||
/* Inform the driver a new AH has been created */
|
||||
void (*notify_new_ah)(struct ib_device *, struct ib_ah_attr *,
|
||||
struct rvt_ah *);
|
||||
|
||||
/* Let the driver pick the next queue pair number*/
|
||||
int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
|
||||
enum ib_qp_type type, u8 port_num, gfp_t gfp);
|
||||
/**
|
||||
* Return 0 if modification is valid, -errno otherwise
|
||||
*/
|
||||
|
||||
/* Determine if its safe or allowed to modify the qp */
|
||||
int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
|
||||
int attr_mask, struct ib_udata *udata);
|
||||
|
||||
/* Driver specific QP modification/notification-of */
|
||||
void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
|
||||
int attr_mask, struct ib_udata *udata);
|
||||
|
||||
/* Driver specific work request checking */
|
||||
int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe);
|
||||
|
||||
/* Notify driver a mad agent has been created */
|
||||
void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
|
||||
|
||||
/* Notify driver a mad agent has been removed */
|
||||
void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
|
||||
|
||||
};
|
||||
|
||||
struct rvt_dev_info {
|
||||
|
|
|
|||
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