diff options
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 8 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 149 |
2 files changed, 156 insertions, 1 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index ca8ce7d097e3..92525f855d82 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -1437,3 +1437,11 @@ int ib_destroy_flow(struct ib_flow *flow_id) return err; } EXPORT_SYMBOL(ib_destroy_flow); + +int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, + struct ib_mr_status *mr_status) +{ + return mr->device->check_mr_status ? + mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS; +} +EXPORT_SYMBOL(ib_check_mr_status); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index cb12e6a4e553..82ab5c1e7605 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -122,7 +122,19 @@ enum ib_device_cap_flags { IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22), IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23), IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24), - IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29) + IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29), + IB_DEVICE_SIGNATURE_HANDOVER = (1<<30) +}; + +enum ib_signature_prot_cap { + IB_PROT_T10DIF_TYPE_1 = 1, + IB_PROT_T10DIF_TYPE_2 = 1 << 1, + IB_PROT_T10DIF_TYPE_3 = 1 << 2, +}; + +enum ib_signature_guard_cap { + IB_GUARD_T10DIF_CRC = 1, + IB_GUARD_T10DIF_CSUM = 1 << 1, }; enum ib_atomic_cap { @@ -172,6 +184,8 @@ struct ib_device_attr { unsigned int max_fast_reg_page_list_len; u16 max_pkeys; u8 local_ca_ack_delay; + int sig_prot_cap; + int sig_guard_cap; }; enum ib_mtu { @@ -477,6 +491,114 @@ struct ib_mr_init_attr { u32 flags; }; +enum ib_signature_type { + IB_SIG_TYPE_T10_DIF, +}; + +/** + * T10-DIF Signature types + * T10-DIF types are defined by SCSI + * specifications. + */ +enum ib_t10_dif_type { + IB_T10DIF_NONE, + IB_T10DIF_TYPE1, + IB_T10DIF_TYPE2, + IB_T10DIF_TYPE3 +}; + +/** + * Signature T10-DIF block-guard types + * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules. + * IB_T10DIF_CSUM: Corresponds to IP checksum rules. + */ +enum ib_t10_dif_bg_type { + IB_T10DIF_CRC, + IB_T10DIF_CSUM +}; + +/** + * struct ib_t10_dif_domain - Parameters specific for T10-DIF + * domain. + * @type: T10-DIF type (0|1|2|3) + * @bg_type: T10-DIF block guard type (CRC|CSUM) + * @pi_interval: protection information interval. + * @bg: seed of guard computation. + * @app_tag: application tag of guard block + * @ref_tag: initial guard block reference tag. + * @type3_inc_reftag: T10-DIF type 3 does not state + * about the reference tag, it is the user + * choice to increment it or not. + */ +struct ib_t10_dif_domain { + enum ib_t10_dif_type type; + enum ib_t10_dif_bg_type bg_type; + u16 pi_interval; + u16 bg; + u16 app_tag; + u32 ref_tag; + bool type3_inc_reftag; +}; + +/** + * struct ib_sig_domain - Parameters for signature domain + * @sig_type: specific signauture type + * @sig: union of all signature domain attributes that may + * be used to set domain layout. + */ +struct ib_sig_domain { + enum ib_signature_type sig_type; + union { + struct ib_t10_dif_domain dif; + } sig; +}; + +/** + * struct ib_sig_attrs - Parameters for signature handover operation + * @check_mask: bitmask for signature byte check (8 bytes) + * @mem: memory domain layout desciptor. + * @wire: wire domain layout desciptor. + */ +struct ib_sig_attrs { + u8 check_mask; + struct ib_sig_domain mem; + struct ib_sig_domain wire; +}; + +enum ib_sig_err_type { + IB_SIG_BAD_GUARD, + IB_SIG_BAD_REFTAG, + IB_SIG_BAD_APPTAG, +}; + +/** + * struct ib_sig_err - signature error descriptor + */ +struct ib_sig_err { + enum ib_sig_err_type err_type; + u32 expected; + u32 actual; + u64 sig_err_offset; + u32 key; +}; + +enum ib_mr_status_check { + IB_MR_CHECK_SIG_STATUS = 1, +}; + +/** + * struct ib_mr_status - Memory region status container + * + * @fail_status: Bitmask of MR checks status. For each + * failed check a corresponding status bit is set. + * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS + * failure. + */ +struct ib_mr_status { + u32 fail_status; + struct ib_sig_err sig_err; +}; + /** * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate * enum. @@ -660,6 +782,7 @@ enum ib_qp_create_flags { IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, IB_QP_CREATE_NETIF_QP = 1 << 5, + IB_QP_CREATE_SIGNATURE_EN = 1 << 6, /* reserve bits 26-31 for low level drivers' internal use */ IB_QP_CREATE_RESERVED_START = 1 << 26, IB_QP_CREATE_RESERVED_END = 1 << 31, @@ -824,6 +947,7 @@ enum ib_wr_opcode { IB_WR_MASKED_ATOMIC_CMP_AND_SWP, IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, IB_WR_BIND_MW, + IB_WR_REG_SIG_MR, /* reserve values for low level drivers' internal use. * These values will not be used at all in the ib core layer. */ @@ -929,6 +1053,12 @@ struct ib_send_wr { u32 rkey; struct ib_mw_bind_info bind_info; } bind_mw; + struct { + struct ib_sig_attrs *sig_attrs; + struct ib_mr *sig_mr; + int access_flags; + struct ib_sge *prot; + } sig_handover; } wr; u32 xrc_remote_srq_num; /* XRC TGT QPs only */ }; @@ -1474,6 +1604,8 @@ struct ib_device { *flow_attr, int domain); 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); struct ib_dma_mapping_ops *dma_ops; @@ -2473,4 +2605,19 @@ static inline int ib_check_mr_access(int flags) return 0; } +/** + * ib_check_mr_status: lightweight check of MR status. + * This routine may provide status checks on a selected + * ib_mr. first use is for signature status check. + * + * @mr: A memory region. + * @check_mask: Bitmask of which checks to perform from + * ib_mr_status_check enumeration. + * @mr_status: The container of relevant status checks. + * failed checks will be indicated in the status bitmask + * and the relevant info shall be in the error item. + */ +int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, + struct ib_mr_status *mr_status); + #endif /* IB_VERBS_H */ |