From 6ce21edf8babad144770526a2ddde6cc2e0b0f24 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Thu, 26 Dec 2019 00:37:12 +0000 Subject: [PATCH] qla2x00t-32gbit: Fix fabric scan hang On timeout, SRB pointer was cleared from outstanding command array and dropped. It was not allowed to go through the done process and cleanup. This patch will abort the SRB where FW will return it with an error status and resume the normal cleanup. Link: https://lore.kernel.org/r/20191217220617.28084-3-hmadhani@marvell.com Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Martin K. Petersen [ commit f57a0107359605b29f4ea9afb8ee2e03473b1448 upstream ] git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8743 d57e44dd-8a1f-0410-8b47-8ef2f437770f --- qla2x00t-32gbit/qla_gbl.h | 1 + qla2x00t-32gbit/qla_init.c | 34 +++++++++++++++++-------------- qla2x00t-32gbit/qla_iocb.c | 41 ++++++++++++++++++++++++++++++-------- 3 files changed, 53 insertions(+), 23 deletions(-) diff --git a/qla2x00t-32gbit/qla_gbl.h b/qla2x00t-32gbit/qla_gbl.h index 0fdc5f93a..e60a834a5 100644 --- a/qla2x00t-32gbit/qla_gbl.h +++ b/qla2x00t-32gbit/qla_gbl.h @@ -259,6 +259,7 @@ extern char *qla2x00_get_fw_version_str(struct scsi_qla_host *, char *); extern void qla2x00_mark_device_lost(scsi_qla_host_t *, fc_port_t *, int); extern void qla2x00_mark_all_devices_lost(scsi_qla_host_t *); +extern int qla24xx_async_abort_cmd(srb_t *, bool); extern struct fw_blob *qla2x00_request_firmware(scsi_qla_host_t *); diff --git a/qla2x00t-32gbit/qla_init.c b/qla2x00t-32gbit/qla_init.c index c689e34a5..0758b1cef 100644 --- a/qla2x00t-32gbit/qla_init.c +++ b/qla2x00t-32gbit/qla_init.c @@ -49,16 +49,9 @@ qla2x00_sp_timeout(struct timer_list *t) { srb_t *sp = from_timer(sp, t, u.iocb_cmd.timer); struct srb_iocb *iocb; - struct req_que *req; - unsigned long flags; - struct qla_hw_data *ha = sp->vha->hw; - WARN_ON_ONCE(irqs_disabled()); - spin_lock_irqsave(&ha->hardware_lock, flags); - req = sp->qpair->req; - req->outstanding_cmds[sp->handle] = NULL; + WARN_ON(irqs_disabled()); iocb = &sp->u.iocb_cmd; - spin_unlock_irqrestore(&ha->hardware_lock, flags); iocb->timeout(sp); } @@ -142,7 +135,7 @@ static void qla24xx_abort_sp_done(srb_t *sp, int res) sp->free(sp); } -static int qla24xx_async_abort_cmd(srb_t *cmd_sp, bool wait) +int qla24xx_async_abort_cmd(srb_t *cmd_sp, bool wait) { scsi_qla_host_t *vha = cmd_sp->vha; struct srb_iocb *abt_iocb; @@ -242,6 +235,7 @@ qla2x00_async_iocb_timeout(void *data) case SRB_NACK_PRLI: case SRB_NACK_LOGO: case SRB_CTRL_VP: + default: rc = qla24xx_async_abort_cmd(sp, false); if (rc) { spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags); @@ -258,10 +252,6 @@ qla2x00_async_iocb_timeout(void *data) sp->done(sp, QLA_FUNCTION_TIMEOUT); } break; - default: - WARN_ON_ONCE(true); - sp->done(sp, QLA_FUNCTION_TIMEOUT); - break; } } @@ -1758,9 +1748,23 @@ qla2x00_tmf_iocb_timeout(void *data) { srb_t *sp = data; struct srb_iocb *tmf = &sp->u.iocb_cmd; + int rc, h; + unsigned long flags; - tmf->u.tmf.comp_status = CS_TIMEOUT; - complete(&tmf->u.tmf.comp); + rc = qla24xx_async_abort_cmd(sp, false); + if (rc) { + spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags); + for (h = 1; h < sp->qpair->req->num_outstanding_cmds; h++) { + if (sp->qpair->req->outstanding_cmds[h] == sp) { + sp->qpair->req->outstanding_cmds[h] = NULL; + break; + } + } + spin_unlock_irqrestore(sp->qpair->qp_lock_ptr, flags); + tmf->u.tmf.comp_status = CS_TIMEOUT; + tmf->u.tmf.data = QLA_FUNCTION_FAILED; + complete(&tmf->u.tmf.comp); + } } static void qla2x00_tmf_sp_done(srb_t *sp, int res) diff --git a/qla2x00t-32gbit/qla_iocb.c b/qla2x00t-32gbit/qla_iocb.c index 81ce7c026..c202c34ef 100644 --- a/qla2x00t-32gbit/qla_iocb.c +++ b/qla2x00t-32gbit/qla_iocb.c @@ -2543,13 +2543,32 @@ qla2x00_els_dcmd_iocb_timeout(void *data) fc_port_t *fcport = sp->fcport; struct scsi_qla_host *vha = sp->vha; struct srb_iocb *lio = &sp->u.iocb_cmd; + unsigned long flags = 0; + int res, h; ql_dbg(ql_dbg_io, vha, 0x3069, "%s Timeout, hdl=%x, portid=%02x%02x%02x\n", sp->name, sp->handle, fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa); - complete(&lio->u.els_logo.comp); + /* Abort the exchange */ + res = qla24xx_async_abort_cmd(sp, false); + if (res) { + ql_dbg(ql_dbg_io, vha, 0x3070, + "mbx abort_command failed.\n"); + spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags); + for (h = 1; h < sp->qpair->req->num_outstanding_cmds; h++) { + if (sp->qpair->req->outstanding_cmds[h] == sp) { + sp->qpair->req->outstanding_cmds[h] = NULL; + break; + } + } + spin_unlock_irqrestore(sp->qpair->qp_lock_ptr, flags); + complete(&lio->u.els_logo.comp); + } else { + ql_dbg(ql_dbg_io, vha, 0x3071, + "mbx abort_command success.\n"); + } } static void qla2x00_els_dcmd_sp_done(srb_t *sp, int res) @@ -2723,23 +2742,29 @@ qla2x00_els_dcmd2_iocb_timeout(void *data) srb_t *sp = data; fc_port_t *fcport = sp->fcport; struct scsi_qla_host *vha = sp->vha; - struct qla_hw_data *ha = vha->hw; unsigned long flags = 0; - int res; + int res, h; ql_dbg(ql_dbg_io + ql_dbg_disc, vha, 0x3069, "%s hdl=%x ELS Timeout, %8phC portid=%06x\n", sp->name, sp->handle, fcport->port_name, fcport->d_id.b24); /* Abort the exchange */ - spin_lock_irqsave(&ha->hardware_lock, flags); - res = ha->isp_ops->abort_command(sp); + res = qla24xx_async_abort_cmd(sp, false); ql_dbg(ql_dbg_io, vha, 0x3070, "mbx abort_command %s\n", (res == QLA_SUCCESS) ? "successful" : "failed"); - spin_unlock_irqrestore(&ha->hardware_lock, flags); - - sp->done(sp, QLA_FUNCTION_TIMEOUT); + if (res) { + spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags); + for (h = 1; h < sp->qpair->req->num_outstanding_cmds; h++) { + if (sp->qpair->req->outstanding_cmds[h] == sp) { + sp->qpair->req->outstanding_cmds[h] = NULL; + break; + } + } + spin_unlock_irqrestore(sp->qpair->qp_lock_ptr, flags); + sp->done(sp, QLA_FUNCTION_TIMEOUT); + } } void qla2x00_els_dcmd2_free(scsi_qla_host_t *vha, struct els_plogi *els_plogi)