From dee7121e8c0a3ce41af2b02d516f54eaec32abcd Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 18 Oct 2022 13:29:50 -0700 Subject: scsi: core: Change the return type of .eh_timed_out() Commit 6600593cbd93 ("block: rename BLK_EH_NOT_HANDLED to BLK_EH_DONE") made it impossible for .eh_timed_out() implementations to call scsi_done() without causing a crash. Restore support for SCSI timeout handlers to call scsi_done() as follows: * Change all .eh_timed_out() handlers as follows: - Change the return type into enum scsi_timeout_action. - Change BLK_EH_RESET_TIMER into SCSI_EH_RESET_TIMER. - Change BLK_EH_DONE into SCSI_EH_NOT_HANDLED. * In scsi_timeout(), convert the SCSI_EH_* values into BLK_EH_* values. Reviewed-by: Lee Duncan Cc: Christoph Hellwig Cc: Ming Lei Cc: John Garry Cc: Mike Christie Cc: Hannes Reinecke Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20221018202958.1902564-3-bvanassche@acm.org Reviewed-by: Mike Christie Signed-off-by: Martin K. Petersen --- include/scsi/libiscsi.h | 2 +- include/scsi/scsi_host.h | 14 +++++++++++++- include/scsi/scsi_transport_fc.h | 2 +- include/scsi/scsi_transport_srp.h | 2 +- 4 files changed, 16 insertions(+), 4 deletions(-) (limited to 'include/scsi') diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 654cc3918c94..695eebc6f2c8 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -393,7 +393,7 @@ extern int iscsi_eh_recover_target(struct scsi_cmnd *sc); extern int iscsi_eh_session_reset(struct scsi_cmnd *sc); extern int iscsi_eh_device_reset(struct scsi_cmnd *sc); extern int iscsi_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc); -extern enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc); +extern enum scsi_timeout_action iscsi_eh_cmd_timed_out(struct scsi_cmnd *sc); /* * iSCSI host helpers. diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index e71436183c0d..587cc767bb67 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -27,6 +27,18 @@ struct scsi_transport_template; #define MODE_INITIATOR 0x01 #define MODE_TARGET 0x02 +/** + * enum scsi_timeout_action - How to handle a command that timed out. + * @SCSI_EH_DONE: The command has already been completed. + * @SCSI_EH_RESET_TIMER: Reset the timer and continue waiting for completion. + * @SCSI_EH_NOT_HANDLED: The command has not yet finished. Abort the command. + */ +enum scsi_timeout_action { + SCSI_EH_DONE, + SCSI_EH_RESET_TIMER, + SCSI_EH_NOT_HANDLED, +}; + struct scsi_host_template { /* * Put fields referenced in IO submission path together in @@ -331,7 +343,7 @@ struct scsi_host_template { * * Status: OPTIONAL */ - enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *); + enum scsi_timeout_action (*eh_timed_out)(struct scsi_cmnd *); /* * Optional routine that allows the transport to decide if a cmd * is retryable. Return true if the transport is in a state the diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index e80a7c542c88..3dcda19d3520 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -862,7 +862,7 @@ struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel, int fc_vport_terminate(struct fc_vport *vport); int fc_block_rport(struct fc_rport *rport); int fc_block_scsi_eh(struct scsi_cmnd *cmnd); -enum blk_eh_timer_return fc_eh_timed_out(struct scsi_cmnd *scmd); +enum scsi_timeout_action fc_eh_timed_out(struct scsi_cmnd *scmd); bool fc_eh_should_retry_cmd(struct scsi_cmnd *scmd); static inline struct Scsi_Host *fc_bsg_to_shost(struct bsg_job *job) diff --git a/include/scsi/scsi_transport_srp.h b/include/scsi/scsi_transport_srp.h index d22df12584f9..dfc78aa112ad 100644 --- a/include/scsi/scsi_transport_srp.h +++ b/include/scsi/scsi_transport_srp.h @@ -118,7 +118,7 @@ extern int srp_reconnect_rport(struct srp_rport *rport); extern void srp_start_tl_fail_timers(struct srp_rport *rport); extern void srp_remove_host(struct Scsi_Host *); extern void srp_stop_rport_timers(struct srp_rport *rport); -enum blk_eh_timer_return srp_timed_out(struct scsi_cmnd *scmd); +enum scsi_timeout_action srp_timed_out(struct scsi_cmnd *scmd); /** * srp_chkready() - evaluate the transport layer state before I/O -- cgit v1.2.1