From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/scsi/qedf/qedf_els.c | 137 ++++++++++++++++++++++++++++++++++++---------
1 files changed, 108 insertions(+), 29 deletions(-)
diff --git a/kernel/drivers/scsi/qedf/qedf_els.c b/kernel/drivers/scsi/qedf/qedf_els.c
index 5178cd0..625e58c 100644
--- a/kernel/drivers/scsi/qedf/qedf_els.c
+++ b/kernel/drivers/scsi/qedf/qedf_els.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic FCoE Offload Driver
* Copyright (c) 2016-2018 Cavium Inc.
- *
- * This software is available under the terms of the GNU General Public License
- * (GPL) Version 2, available from the file COPYING in the main directory of
- * this source tree.
*/
#include "qedf.h"
@@ -127,7 +124,7 @@
task = qedf_get_task_mem(&qedf->tasks, xid);
qedf_init_mp_task(els_req, task, sqe);
- /* Put timer on original I/O request */
+ /* Put timer on els request */
if (timer_msec)
qedf_cmd_timer_set(qedf, els_req, timer_msec);
@@ -135,6 +132,8 @@
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Ringing doorbell for ELS "
"req\n");
qedf_ring_doorbell(fcport);
+ set_bit(QEDF_CMD_OUTSTANDING, &els_req->flags);
+
spin_unlock_irqrestore(&fcport->rport_lock, flags);
els_err:
return rc;
@@ -143,20 +142,38 @@
void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
struct qedf_ioreq *els_req)
{
- struct fcoe_task_context *task_ctx;
- struct scsi_cmnd *sc_cmd;
- uint16_t xid;
struct fcoe_cqe_midpath_info *mp_info;
+ struct qedf_rport *fcport;
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered with xid = 0x%x"
" cmd_type = %d.\n", els_req->xid, els_req->cmd_type);
+ if ((els_req->event == QEDF_IOREQ_EV_ELS_FLUSH)
+ || (els_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS)
+ || (els_req->event == QEDF_IOREQ_EV_CLEANUP_FAILED)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "ELS completion xid=0x%x after flush event=0x%x",
+ els_req->xid, els_req->event);
+ return;
+ }
+
+ fcport = els_req->fcport;
+
+ /* When flush is active,
+ * let the cmds be completed from the cleanup context
+ */
+ if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
+ test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags)) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
+ "Dropping ELS completion xid=0x%x as fcport is flushing",
+ els_req->xid);
+ return;
+ }
+
+ clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags);
+
/* Kill the ELS timer */
cancel_delayed_work(&els_req->timeout_work);
-
- xid = els_req->xid;
- task_ctx = qedf_get_task_mem(&qedf->tasks, xid);
- sc_cmd = els_req->sc_cmd;
/* Get ELS response length from CQE */
mp_info = &cqe->cqe_info.midpath_info;
@@ -185,20 +202,23 @@
orig_io_req = cb_arg->aborted_io_req;
- if (!orig_io_req)
+ if (!orig_io_req) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Original io_req is NULL, rrq_req = %p.\n", rrq_req);
goto out_free;
-
- if (rrq_req->event != QEDF_IOREQ_EV_ELS_TMO &&
- rrq_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
- cancel_delayed_work_sync(&orig_io_req->timeout_work);
+ }
refcount = kref_read(&orig_io_req->refcount);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "rrq_compl: orig io = %p,"
" orig xid = 0x%x, rrq_xid = 0x%x, refcount=%d\n",
orig_io_req, orig_io_req->xid, rrq_req->xid, refcount);
- /* This should return the aborted io_req to the command pool */
- if (orig_io_req)
+ /*
+ * This should return the aborted io_req to the command pool. Note that
+ * we need to check the refcound in case the original request was
+ * flushed but we get a completion on this xid.
+ */
+ if (orig_io_req && refcount > 0)
kref_put(&orig_io_req->refcount, qedf_release_cmd);
out_free:
@@ -225,6 +245,7 @@
uint32_t sid;
uint32_t r_a_tov;
int rc;
+ int refcount;
if (!aborted_io_req) {
QEDF_ERR(NULL, "abort_io_req is NULL.\n");
@@ -232,6 +253,15 @@
}
fcport = aborted_io_req->fcport;
+
+ if (!fcport) {
+ refcount = kref_read(&aborted_io_req->refcount);
+ QEDF_ERR(NULL,
+ "RRQ work was queued prior to a flush xid=0x%x, refcount=%d.\n",
+ aborted_io_req->xid, refcount);
+ kref_put(&aborted_io_req->refcount, qedf_release_cmd);
+ return -EINVAL;
+ }
/* Check that fcport is still offloaded */
if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
@@ -245,6 +275,19 @@
}
qedf = fcport->qedf;
+
+ /*
+ * Sanity check that we can send a RRQ to make sure that refcount isn't
+ * 0
+ */
+ refcount = kref_read(&aborted_io_req->refcount);
+ if (refcount != 1) {
+ QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
+ "refcount for xid=%x io_req=%p refcount=%d is not 1.\n",
+ aborted_io_req->xid, aborted_io_req, refcount);
+ return -EINVAL;
+ }
+
lport = qedf->lport;
sid = fcport->sid;
r_a_tov = lport->r_a_tov;
@@ -327,32 +370,47 @@
struct fc_lport *lport;
struct fc_rport_priv *rdata;
u32 port_id;
+ unsigned long flags;
- if (!fcport)
+ if (!fcport) {
+ QEDF_ERR(NULL, "fcport is NULL.\n");
return;
+ }
+ spin_lock_irqsave(&fcport->rport_lock, flags);
if (test_bit(QEDF_RPORT_IN_RESET, &fcport->flags) ||
!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) ||
test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
QEDF_ERR(&(fcport->qedf->dbg_ctx), "fcport %p already in reset or not offloaded.\n",
fcport);
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
return;
}
/* Set that we are now in reset */
set_bit(QEDF_RPORT_IN_RESET, &fcport->flags);
+ spin_unlock_irqrestore(&fcport->rport_lock, flags);
rdata = fcport->rdata;
- if (rdata) {
+ if (rdata && !kref_get_unless_zero(&rdata->kref)) {
+ fcport->rdata = NULL;
+ rdata = NULL;
+ }
+
+ if (rdata && rdata->rp_state == RPORT_ST_READY) {
lport = fcport->qedf->lport;
port_id = rdata->ids.port_id;
QEDF_ERR(&(fcport->qedf->dbg_ctx),
"LOGO port_id=%x.\n", port_id);
fc_rport_logoff(rdata);
+ kref_put(&rdata->kref, fc_rport_destroy);
+ mutex_lock(&lport->disc.disc_mutex);
/* Recreate the rport and log back in */
rdata = fc_rport_create(lport, port_id);
+ mutex_unlock(&lport->disc.disc_mutex);
if (rdata)
fc_rport_login(rdata);
+ fcport->rdata = rdata;
}
clear_bit(QEDF_RPORT_IN_RESET, &fcport->flags);
}
@@ -380,8 +438,11 @@
* If we are flushing the command just free the cb_arg as none of the
* response data will be valid.
*/
- if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH)
+ if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH) {
+ QEDF_ERR(NULL, "els_req xid=0x%x event is flush.\n",
+ els_req->xid);
goto free_arg;
+ }
fcport = els_req->fcport;
mp_req = &(els_req->mp_req);
@@ -494,8 +555,10 @@
orig_io_req = cb_arg->aborted_io_req;
- if (!orig_io_req)
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
goto out_free;
+ }
clear_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags);
@@ -509,8 +572,11 @@
orig_io_req, orig_io_req->xid, srr_req->xid, refcount);
/* If a SRR times out, simply free resources */
- if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO)
+ if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "ELS timeout rec_xid=0x%x.\n", srr_req->xid);
goto out_put;
+ }
/* Normalize response data into struct fc_frame */
mp_req = &(srr_req->mp_req);
@@ -561,7 +627,7 @@
struct qedf_rport *fcport;
struct fc_lport *lport;
struct qedf_els_cb_arg *cb_arg = NULL;
- u32 sid, r_a_tov;
+ u32 r_a_tov;
int rc;
if (!orig_io_req) {
@@ -587,7 +653,6 @@
qedf = fcport->qedf;
lport = qedf->lport;
- sid = fcport->sid;
r_a_tov = lport->r_a_tov;
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending SRR orig_io=%p, "
@@ -684,8 +749,11 @@
cb_arg = io_req->cb_arg;
/* If we timed out just free resources */
- if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe)
+ if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "cqe is NULL or timeout event (0x%x)", io_req->event);
goto free;
+ }
/* Kill the timer we put on the request */
cancel_delayed_work_sync(&io_req->timeout_work);
@@ -788,8 +856,10 @@
orig_io_req = cb_arg->aborted_io_req;
- if (!orig_io_req)
+ if (!orig_io_req) {
+ QEDF_ERR(NULL, "orig_io_req is NULL.\n");
goto out_free;
+ }
if (rec_req->event != QEDF_IOREQ_EV_ELS_TMO &&
rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
@@ -801,8 +871,12 @@
orig_io_req, orig_io_req->xid, rec_req->xid, refcount);
/* If a REC times out, free resources */
- if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO)
+ if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO) {
+ QEDF_ERR(&qedf->dbg_ctx,
+ "Got TMO event, orig_io_req %p orig_io_xid=0x%x.\n",
+ orig_io_req, orig_io_req->xid);
goto out_put;
+ }
/* Normalize response data into struct fc_frame */
mp_req = &(rec_req->mp_req);
@@ -828,6 +902,11 @@
opcode = fc_frame_payload_op(fp);
if (opcode == ELS_LS_RJT) {
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
+ if (!rjt) {
+ QEDF_ERR(&qedf->dbg_ctx, "payload get failed");
+ goto out_free_frame;
+ }
+
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"Received LS_RJT for REC: er_reason=0x%x, "
"er_explan=0x%x.\n", rjt->er_reason, rjt->er_explan);
--
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