From mboxrd@z Thu Jan 1 00:00:00 1970 From: Quinn Tran Date: Thu, 21 Nov 2019 22:50:58 +0000 Subject: RE: [EXT] [PATCH v2 13/15] scsi: qla2xxx: Add async mode for qla24xx_els_dcmd_iocb Message-Id: List-Id: References: <20191120222723.27779-1-r.bolshakov@yadro.com> <20191120222723.27779-14-r.bolshakov@yadro.com> In-Reply-To: <20191120222723.27779-14-r.bolshakov@yadro.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Roman Bolshakov , "linux-scsi@vger.kernel.org" , "target-devel@vger.kernel.org" Cc: "linux@yadro.com" Looks good. Acked-by: Quinn Tran Regards, Quinn Tran -----Original Message----- From: Roman Bolshakov Sent: Wednesday, November 20, 2019 2:27 PM To: linux-scsi@vger.kernel.org; target-devel@vger.kernel.org Cc: linux@yadro.com; Roman Bolshakov ; Quinn Tran Subject: [EXT] [PATCH v2 13/15] scsi: qla2xxx: Add async mode for qla24xx_els_dcmd_iocb External Email ---------------------------------------------------------------------- qla24xx_els_dcmd_iocb() performs LOGO and might be invoked in contexts where it is prohibited to sleep. The new wait parameter provides a way to use the function in such context, similarly to qla24xx_els_dcmd2_iocb(). Cc: Quinn Tran Cc: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_attr.c | 2 +- drivers/scsi/qla2xxx/qla_gbl.h | 2 +- drivers/scsi/qla2xxx/qla_iocb.c | 11 +++++++++-- drivers/scsi/qla2xxx/qla_target.c | 2 +- 4 files changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 481c05dbea06..35c703ec59ad 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -828,7 +828,7 @@ qla2x00_issue_logo(struct file *filp, struct kobject *kobj, ql_log(ql_log_info, vha, 0x70e4, "%s: %d\n", __func__, type); - qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, did); + qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, did, true); return count; } diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 5b163ad85c34..df0f3421e3bb 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -43,7 +43,7 @@ extern void qla2x00_clear_loop_id(fc_port_t *fcport); extern int qla2x00_fabric_login(scsi_qla_host_t *, fc_port_t *, uint16_t *); extern int qla2x00_local_device_login(scsi_qla_host_t *, fc_port_t *); -extern int qla24xx_els_dcmd_iocb(scsi_qla_host_t *, int, port_id_t); +extern int qla24xx_els_dcmd_iocb(scsi_qla_host_t *, int, port_id_t, +bool); extern int qla24xx_els_dcmd2_iocb(scsi_qla_host_t *, int, fc_port_t *, bool); extern void qla2x00_els_dcmd2_free(scsi_qla_host_t *vha, struct els_plogi *els_plogi); diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 53ccbd6b71ed..12b37b711ae8 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2562,7 +2562,7 @@ static void qla2x00_els_dcmd_sp_done(srb_t *sp, int res) int qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode, - port_id_t remote_did) + port_id_t remote_did, bool wait) { srb_t *sp; fc_port_t *fcport = NULL; @@ -2601,6 +2601,8 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode, elsio->timeout = qla2x00_els_dcmd_iocb_timeout; qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT); init_completion(&sp->u.iocb_cmd.u.els_logo.comp); + if (wait) + sp->flags = SRB_WAKEUP_ON_COMP; sp->done = qla2x00_els_dcmd_sp_done; sp->free = qla2x00_els_dcmd_sp_free; @@ -2637,9 +2639,14 @@ qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode, sp->name, sp->handle, fcport->loop_id, fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa); - wait_for_completion(&elsio->u.els_logo.comp); + if (wait) { + wait_for_completion(&elsio->u.els_logo.comp); + } else { + goto done; + } sp->free(sp); +done: return rval; } diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 68c14143e50e..0f2bc4cd562f 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -932,7 +932,7 @@ qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) mutex_unlock(&vha->vha_tgt.tgt_mutex); - res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); + res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id, true); mutex_lock(&vha->vha_tgt.tgt_mutex); list_del(&logo->list); -- 2.24.0