diff options
Diffstat (limited to 'drivers/infiniband/ulp/srpt/ib_srpt.h')
| -rw-r--r-- | drivers/infiniband/ulp/srpt/ib_srpt.h | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h index 673387d365a3..11ce8c94a051 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.h +++ b/drivers/infiniband/ulp/srpt/ib_srpt.h @@ -114,7 +114,7 @@ enum { MIN_SRPT_SQ_SIZE = 16, DEF_SRPT_SQ_SIZE = 4096, - SRPT_RQ_SIZE = 128, + MAX_SRPT_RQ_SIZE = 128, MIN_SRPT_SRQ_SIZE = 4, DEFAULT_SRPT_SRQ_SIZE = 4095, MAX_SRPT_SRQ_SIZE = 65535, @@ -134,7 +134,7 @@ enum { }; /** - * enum srpt_command_state - SCSI command state managed by SRPT. + * enum srpt_command_state - SCSI command state managed by SRPT * @SRPT_STATE_NEW: New command arrived and is being processed. * @SRPT_STATE_NEED_DATA: Processing a write or bidir command and waiting * for data arrival. @@ -158,7 +158,8 @@ enum srpt_command_state { }; /** - * struct srpt_ioctx - Shared SRPT I/O context information. + * struct srpt_ioctx - shared SRPT I/O context information + * @cqe: Completion queue element. * @buf: Pointer to the buffer. * @dma: DMA address of the buffer. * @index: Index of the I/O context in its ioctx_ring array. @@ -171,7 +172,7 @@ struct srpt_ioctx { }; /** - * struct srpt_recv_ioctx - SRPT receive I/O context. + * struct srpt_recv_ioctx - SRPT receive I/O context * @ioctx: See above. * @wait_list: Node for insertion in srpt_rdma_ch.cmd_wait_list. */ @@ -187,13 +188,20 @@ struct srpt_rw_ctx { }; /** - * struct srpt_send_ioctx - SRPT send I/O context. + * struct srpt_send_ioctx - SRPT send I/O context * @ioctx: See above. * @ch: Channel pointer. - * @spinlock: Protects 'state'. + * @s_rw_ctx: @rw_ctxs points here if only a single rw_ctx is needed. + * @rw_ctxs: RDMA read/write contexts. + * @rdma_cqe: RDMA completion queue element. + * @free_list: Node in srpt_rdma_ch.free_list. * @state: I/O context state. * @cmd: Target core command data structure. * @sense_data: SCSI sense data. + * @n_rdma: Number of work requests needed to transfer this ioctx. + * @n_rw_ctx: Size of rw_ctxs array. + * @queue_status_only: Send a SCSI status back to the initiator but no data. + * @sense_data: Sense data to be sent to the initiator. */ struct srpt_send_ioctx { struct srpt_ioctx ioctx; @@ -204,10 +212,8 @@ struct srpt_send_ioctx { struct ib_cqe rdma_cqe; struct list_head free_list; - spinlock_t spinlock; enum srpt_command_state state; struct se_cmd cmd; - struct completion tx_done; u8 n_rdma; u8 n_rw_ctx; bool queue_status_only; @@ -215,7 +221,7 @@ struct srpt_send_ioctx { }; /** - * enum rdma_ch_state - SRP channel state. + * enum rdma_ch_state - SRP channel state * @CH_CONNECTING: QP is in RTR state; waiting for RTU. * @CH_LIVE: QP is in RTS state. * @CH_DISCONNECTING: DREQ has been sent and waiting for DREP or DREQ has @@ -233,12 +239,14 @@ enum rdma_ch_state { }; /** - * struct srpt_rdma_ch - RDMA channel. + * struct srpt_rdma_ch - RDMA channel * @cm_id: IB CM ID associated with the channel. * @qp: IB queue pair used for communicating over this channel. * @cq: IB completion queue for this channel. + * @zw_cqe: Zero-length write CQE. + * @kref: kref for this channel. * @rq_size: IB receive queue size. - * @rsp_size IB response message size in bytes. + * @max_rsp_size: Maximum size of an RSP response message in bytes. * @sq_wr_avail: number of work requests available in the send queue. * @sport: pointer to the information of the HCA port used by this * channel. @@ -270,7 +278,7 @@ struct srpt_rdma_ch { struct ib_cqe zw_cqe; struct kref kref; int rq_size; - u32 rsp_size; + u32 max_rsp_size; atomic_t sq_wr_avail; struct srpt_port *sport; u8 i_port_id[16]; @@ -293,7 +301,7 @@ struct srpt_rdma_ch { }; /** - * struct srpt_port_attib - Attributes for SRPT port + * struct srpt_port_attib - attributes for SRPT port * @srp_max_rdma_size: Maximum size of SRP RDMA transfers for new connections. * @srp_max_rsp_size: Maximum size of SRP response messages in bytes. * @srp_sq_size: Shared receive queue (SRQ) size. @@ -307,7 +315,7 @@ struct srpt_port_attrib { }; /** - * struct srpt_port - Information associated by SRPT with a single IB port. + * struct srpt_port - information associated by SRPT with a single IB port * @sdev: backpointer to the HCA information. * @mad_agent: per-port management datagram processing information. * @enabled: Whether or not this target port is enabled. @@ -323,7 +331,7 @@ struct srpt_port_attrib { * @port_guid_wwn: WWN associated with target port GUID. * @port_gid_tpg: TPG associated with target port GID. * @port_gid_wwn: WWN associated with target port GID. - * @port_acl_list: Head of the list with all node ACLs for this port. + * @port_attrib: Port attributes that can be accessed through configfs. */ struct srpt_port { struct srpt_device *sdev; @@ -344,7 +352,7 @@ struct srpt_port { }; /** - * struct srpt_device - Information associated by SRPT with a single HCA. + * struct srpt_device - information associated by SRPT with a single HCA * @device: Backpointer to the struct ib_device managed by the IB core. * @pd: IB protection domain. * @lkey: L_Key (local key) with write access to all local memory. |