diff options
Diffstat (limited to 'drivers/infiniband/ulp/srp/ib_srp.h')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index a2706086b9c7..b2861cd2087a 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -67,6 +67,17 @@ enum { SRP_TAG_TSK_MGMT = 1U << 31, SRP_MAX_PAGES_PER_MR = 512, + + SRP_MAX_ADD_CDB_LEN = 16, + + SRP_MAX_IMM_SGE = 2, + SRP_MAX_SGE = SRP_MAX_IMM_SGE + 1, + /* + * Choose the immediate data offset such that a 32 byte CDB still fits. + */ + SRP_IMM_DATA_OFFSET = sizeof(struct srp_cmd) + + SRP_MAX_ADD_CDB_LEN + + sizeof(struct srp_imm_buf), }; enum srp_target_state { @@ -130,6 +141,8 @@ struct srp_request { /** * struct srp_rdma_ch * @comp_vector: Completion vector used by this RDMA channel. + * @max_it_iu_len: Maximum initiator-to-target information unit length. + * @max_ti_iu_len: Maximum target-to-initiator information unit length. */ struct srp_rdma_ch { /* These are RW in the hot path, and commonly used together */ @@ -146,6 +159,9 @@ struct srp_rdma_ch { struct ib_fmr_pool *fmr_pool; struct srp_fr_pool *fr_pool; }; + uint32_t max_it_iu_len; + uint32_t max_ti_iu_len; + bool use_imm_data; /* Everything above this point is used in the hot path of * command processing. Try to keep them packed into cachelines. @@ -169,7 +185,6 @@ struct srp_rdma_ch { struct srp_iu **tx_ring; struct srp_iu **rx_ring; struct srp_request *req_ring; - int max_ti_iu_len; int comp_vector; u64 tsk_mgmt_tag; @@ -194,7 +209,6 @@ struct srp_target_port { u32 ch_count; u32 lkey; enum srp_target_state state; - unsigned int max_iu_len; unsigned int cmd_sg_cnt; unsigned int indirect_size; bool allow_ext_sg; @@ -259,6 +273,8 @@ struct srp_iu { void *buf; size_t size; enum dma_data_direction direction; + u32 num_sge; + struct ib_sge sge[SRP_MAX_SGE]; struct ib_cqe cqe; }; |