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Add a serial number for requests so we don't just depend on a request pointer

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to try and do forensics on what has occurred.
This commit is contained in:
Matt Jacob 2006-03-07 17:56:40 +00:00
parent f09934b191
commit 7a49a0d1fb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=156400
3 changed files with 18 additions and 9 deletions
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4
sys/dev/mpt/mpt.c
View File

@ -1006,6 +1006,7 @@ mpt_free_request(struct mpt_softc *mpt, request_t *req)
req->chain = NULL;
mpt_free_request(mpt, nxt); /* NB: recursion */
}
req->serno = 0;
req->ccb = NULL;
req->state = REQ_STATE_FREE;
if (LIST_EMPTY(&mpt->ack_frames)) {
@ -1042,6 +1043,9 @@ mpt_get_request(struct mpt_softc *mpt, int sleep_ok)
TAILQ_REMOVE(&mpt->request_free_list, req, links);
req->state = REQ_STATE_ALLOCATED;
req->chain = NULL;
if ((req->serno = ++(mpt->cmd_serno)) == 0) {
req->serno = ++(mpt->cmd_serno);
}
} else if (sleep_ok != 0) {
mpt->getreqwaiter = 1;
mpt_sleep(mpt, &mpt->request_free_list, PUSER, "mptgreq", 0);

2
sys/dev/mpt/mpt.h
View File

@ -280,6 +280,7 @@ struct req_entry {
mpt_req_state_t state; /* Request State Information */
uint16_t index; /* Index of this entry */
uint16_t IOCStatus; /* Completion status */
uint32_t serno; /* serial number */
union ccb *ccb; /* CAM request */
void *req_vbuf; /* Virtual Address of Entry */
void *sense_vbuf; /* Virtual Address of sense data */
@ -430,6 +431,7 @@ struct mpt_softc {
bus : 1; /* FC929/1030 have two busses */
u_int verbose;
uint32_t cmd_serno;
/*
* IOC Facts

21
sys/dev/mpt/mpt_cam.c
View File

@ -361,7 +361,7 @@ mpt_timeout(void *arg)
MPT_LOCK(mpt);
req = ccb->ccb_h.ccb_req_ptr;
mpt_prt(mpt, "Request %p Timed out.\n", req);
mpt_prt(mpt, "Request %p:serno Timed out.\n", req, req->serno);
if ((req->state & REQ_STATE_QUEUED) == REQ_STATE_QUEUED) {
TAILQ_REMOVE(&mpt->request_pending_list, req, links);
TAILQ_INSERT_TAIL(&mpt->request_timeout_list, req, links);
@ -1138,8 +1138,8 @@ mpt_scsi_tmf_reply_handler(struct mpt_softc *mpt, request_t *req,
MSG_SCSI_TASK_MGMT_REPLY *tmf_reply;
u_int status;
mpt_lprt(mpt, MPT_PRT_DEBUG, "TMF Complete: req %p, reply %p\n",
req, reply_frame);
mpt_lprt(mpt, MPT_PRT_DEBUG, "TMF Complete: req %p:serno, reply %p\n",
req, req->serno, reply_frame);
KASSERT(req == mpt->tmf_req, ("TMF Reply not using mpt->tmf_req"));
tmf_reply = (MSG_SCSI_TASK_MGMT_REPLY *)reply_frame;
@ -2075,9 +2075,9 @@ mpt_recover_commands(struct mpt_softc *mpt)
*/
while ((req = TAILQ_FIRST(&mpt->request_timeout_list)) != NULL) {
u_int status;
u_int32_t serno = req->serno;
mpt_prt(mpt, "Attempting to Abort Req %p\n", req);
mpt_prt(mpt, "Attempting to Abort Req %p:%u\n", req, serno);
ccb = req->ccb;
mpt_set_ccb_status(ccb, CAM_CMD_TIMEOUT);
error = mpt_scsi_send_tmf(mpt,
@ -2087,6 +2087,8 @@ mpt_recover_commands(struct mpt_softc *mpt)
htole32(req->index | scsi_io_handler_id), /*sleep_ok*/TRUE);
if (error != 0) {
mpt_prt(mpt, "Abort Req %p:%u failed to start TMF\n",
req, serno);
/*
* mpt_scsi_send_tmf hard resets on failure, so no
* need to do so here. Our queue should be emptied
@ -2105,8 +2107,8 @@ mpt_recover_commands(struct mpt_softc *mpt)
* If we've errored out and the transaction is still
* pending, reset the controller.
*/
mpt_prt(mpt, "mpt_recover_commands: Abort timed-out. "
"Resetting controller\n");
mpt_prt(mpt, "Abort Req %p:%d timed-out. "
"Resetting controller\n", req, serno);
mpt_reset(mpt, /*reinit*/TRUE);
continue;
}
@ -2119,8 +2121,9 @@ mpt_recover_commands(struct mpt_softc *mpt)
continue;
mpt_lprt(mpt, MPT_PRT_DEBUG,
"mpt_recover_commands: Abort Failed "
"with status 0x%x\n. Resetting bus", status);
"Abort Req %p: %u Failed "
"with status 0x%x\n. Resetting bus.",
req, serno, status);
/*
* If the abort attempt fails for any reason, reset the bus.