diff options
Diffstat (limited to 'Documentation/scsi/scsi_transport_srp')
| -rw-r--r-- | Documentation/scsi/scsi_transport_srp/figures.rst | 6 | ||||
| -rw-r--r-- | Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot | 26 |
2 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/scsi/scsi_transport_srp/figures.rst b/Documentation/scsi/scsi_transport_srp/figures.rst new file mode 100644 index 000000000..6c8f8dd63 --- /dev/null +++ b/Documentation/scsi/scsi_transport_srp/figures.rst @@ -0,0 +1,6 @@ +.. SPDX-License-Identifier: GPL-2.0 + +SCSI RDMA (SRP) transport class diagram +======================================= + +.. kernel-figure:: rport_state_diagram.dot diff --git a/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot b/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot new file mode 100644 index 000000000..75d610d64 --- /dev/null +++ b/Documentation/scsi/scsi_transport_srp/rport_state_diagram.dot @@ -0,0 +1,26 @@ +digraph srp_initiator { + node [shape = doublecircle]; running lost; + node [shape = circle]; + + { + rank = min; + running_rta [ label = "running;\nreconnect\ntimer\nactive" ]; + }; + running [ label = "running;\nreconnect\ntimer\nstopped" ]; + blocked; + failfast [ label = "fail I/O\nfast" ]; + lost; + + running -> running_rta [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nsrp_start_tl_fail_timers()" ]; + running_rta -> running [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nreconnecting succeeded" ]; + running -> blocked [ label = "fast_io_fail_tmo >= 0 or\ndev_loss_tmo >= 0;\nsrp_start_tl_fail_timers()" ]; + running -> failfast [ label = "fast_io_fail_tmo = off and\ndev_loss_tmo = off;\nreconnecting failed\n" ]; + blocked -> failfast [ label = "fast_io_fail_tmo\nexpired or\nreconnecting\nfailed" ]; + blocked -> lost [ label = "dev_loss_tmo\nexpired or\nsrp_stop_rport_timers()" ]; + failfast -> lost [ label = "dev_loss_tmo\nexpired or\nsrp_stop_rport_timers()" ]; + blocked -> running [ label = "reconnecting\nsucceeded" ]; + failfast -> failfast [ label = "reconnecting\nfailed" ]; + failfast -> running [ label = "reconnecting\nsucceeded" ]; + running -> lost [ label = "srp_stop_rport_timers()" ]; + running_rta -> lost [ label = "srp_stop_rport_timers()" ]; +} |