diff options
| author | Bart Van Assche <bart.vanassche@wdc.com> | 2018-01-17 03:14:08 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2018-01-18 22:49:24 +0300 |
| commit | ba60c84f82f6facfe66688073458f233e4e5ba51 (patch) | |
| tree | 0d6066dbad7b212f58fb4dc96dbcc120c30a3a39 /drivers/infiniband/ulp/srpt/ib_srpt.h | |
| parent | c5efb62148a4bf2865d76c43c012a3329f5b5b8c (diff) | |
| download | linux-ba60c84f82f6facfe66688073458f233e4e5ba51.tar.xz | |
IB/srpt: One target per port
In multipathing setups where a target system is equipped with
dual-port HCAs it is useful to have one connection per target port
instead of one connection per target HCA. Hence move the connection
list (rch_list) from struct srpt_device into struct srpt_port.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/srpt/ib_srpt.h')
| -rw-r--r-- | drivers/infiniband/ulp/srpt/ib_srpt.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h index f830968e7fd4..1434f0cd45f7 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.h +++ b/drivers/infiniband/ulp/srpt/ib_srpt.h @@ -262,7 +262,7 @@ enum rdma_ch_state { * @state: channel state. See also enum rdma_ch_state. * @ioctx_ring: Send ring. * @ioctx_recv_ring: Receive I/O context ring. - * @list: Node for insertion in the srpt_device.rch_list list. + * @list: Node in srpt_port.rch_list. * @cmd_wait_list: List of SCSI commands that arrived before the RTU event. This * list contains struct srpt_ioctx elements and is protected * against concurrent modification by the cm_id spinlock. @@ -334,6 +334,9 @@ struct srpt_port_attrib { * @port_gid_tpg: TPG associated with target port GID. * @port_gid_wwn: WWN associated with target port GID. * @port_attrib: Port attributes that can be accessed through configfs. + * @ch_releaseQ: Enables waiting for removal from rch_list. + * @mutex: Protects rch_list. + * @rch_list: Channel list. See also srpt_rdma_ch.list. */ struct srpt_port { struct srpt_device *sdev; @@ -351,6 +354,9 @@ struct srpt_port { struct se_portal_group port_gid_tpg; struct se_wwn port_gid_wwn; struct srpt_port_attrib port_attrib; + wait_queue_head_t ch_releaseQ; + struct mutex mutex; + struct list_head rch_list; }; /** @@ -361,11 +367,9 @@ struct srpt_port { * @srq: Per-HCA SRQ (shared receive queue). * @cm_id: Connection identifier. * @srq_size: SRQ size. + * @sdev_mutex: Serializes use_srq changes. * @use_srq: Whether or not to use SRQ. * @ioctx_ring: Per-HCA SRQ. - * @rch_list: Per-device channel list -- see also srpt_rdma_ch.list. - * @ch_releaseQ: Enables waiting for removal from rch_list. - * @mutex: Protects rch_list. * @port: Information about the ports owned by this HCA. * @event_handler: Per-HCA asynchronous IB event handler. * @list: Node in srpt_dev_list. @@ -377,11 +381,9 @@ struct srpt_device { struct ib_srq *srq; struct ib_cm_id *cm_id; int srq_size; + struct mutex sdev_mutex; bool use_srq; struct srpt_recv_ioctx **ioctx_ring; - struct list_head rch_list; - wait_queue_head_t ch_releaseQ; - struct mutex mutex; struct srpt_port port[2]; struct ib_event_handler event_handler; struct list_head list; |