diff options
Diffstat (limited to 'drivers/scsi/libfc/fc_fcp.c')
| -rw-r--r-- | drivers/scsi/libfc/fc_fcp.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index 5121272f28fd..5c6c73a80379 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -764,8 +764,11 @@ static void fc_fcp_recv(struct fc_seq *seq, struct fc_frame *fp, void *arg) fh = fc_frame_header_get(fp); r_ctl = fh->fh_r_ctl; - if (lport->state != LPORT_ST_READY) + if (lport->state != LPORT_ST_READY) { + FC_FCP_DBG(fsp, "lport state %d, ignoring r_ctl %x\n", + lport->state, r_ctl); goto out; + } if (fc_fcp_lock_pkt(fsp)) goto out; @@ -774,8 +777,10 @@ static void fc_fcp_recv(struct fc_seq *seq, struct fc_frame *fp, void *arg) goto unlock; } - if (fsp->state & (FC_SRB_ABORTED | FC_SRB_ABORT_PENDING)) + if (fsp->state & (FC_SRB_ABORTED | FC_SRB_ABORT_PENDING)) { + FC_FCP_DBG(fsp, "command aborted, ignoring r_ctl %x\n", r_ctl); goto unlock; + } if (r_ctl == FC_RCTL_DD_DATA_DESC) { /* @@ -910,6 +915,10 @@ static void fc_fcp_resp(struct fc_fcp_pkt *fsp, struct fc_frame *fp) * Wait a at least one jiffy to see if it is delivered. * If this expires without data, we may do SRR. */ + FC_FCP_DBG(fsp, "tgt %6.6x xfer len %zx data underrun " + "len %x, data len %x\n", + fsp->rport->port_id, + fsp->xfer_len, expected_len, fsp->data_len); fc_fcp_timer_set(fsp, 2); return; } @@ -959,8 +968,11 @@ static void fc_fcp_complete_locked(struct fc_fcp_pkt *fsp) if (fsp->cdb_status == SAM_STAT_GOOD && fsp->xfer_len < fsp->data_len && !fsp->io_status && (!(fsp->scsi_comp_flags & FCP_RESID_UNDER) || - fsp->xfer_len < fsp->data_len - fsp->scsi_resid)) + fsp->xfer_len < fsp->data_len - fsp->scsi_resid)) { + FC_FCP_DBG(fsp, "data underrun, xfer %zx data %x\n", + fsp->xfer_len, fsp->data_len); fsp->status_code = FC_DATA_UNDRUN; + } } seq = fsp->seq_ptr; @@ -1222,8 +1234,11 @@ static int fc_fcp_pkt_abort(struct fc_fcp_pkt *fsp) int rc = FAILED; unsigned long ticks_left; - if (fc_fcp_send_abort(fsp)) + FC_FCP_DBG(fsp, "pkt abort state %x\n", fsp->state); + if (fc_fcp_send_abort(fsp)) { + FC_FCP_DBG(fsp, "failed to send abort\n"); return FAILED; + } init_completion(&fsp->tm_done); fsp->wait_for_comp = 1; @@ -1394,6 +1409,8 @@ static void fc_fcp_timeout(unsigned long data) if (fsp->cdb_cmd.fc_tm_flags) goto unlock; + FC_FCP_DBG(fsp, "fcp timeout, flags %x state %x\n", + rpriv->flags, fsp->state); fsp->state |= FC_SRB_FCP_PROCESSING_TMO; if (rpriv->flags & FC_RP_FLAGS_REC_SUPPORTED) @@ -1486,8 +1503,8 @@ static void fc_fcp_rec_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) rjt = fc_frame_payload_get(fp, sizeof(*rjt)); switch (rjt->er_reason) { default: - FC_FCP_DBG(fsp, "device %x unexpected REC reject " - "reason %d expl %d\n", + FC_FCP_DBG(fsp, + "device %x invalid REC reject %d/%d\n", fsp->rport->port_id, rjt->er_reason, rjt->er_explan); /* fall through */ @@ -1503,6 +1520,9 @@ static void fc_fcp_rec_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) break; case ELS_RJT_LOGIC: case ELS_RJT_UNAB: + FC_FCP_DBG(fsp, "device %x REC reject %d/%d\n", + fsp->rport->port_id, rjt->er_reason, + rjt->er_explan); /* * If no data transfer, the command frame got dropped * so we just retry. If data was transferred, we @@ -1608,6 +1628,8 @@ static void fc_fcp_rec_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp) switch (error) { case -FC_EX_CLOSED: + FC_FCP_DBG(fsp, "REC %p fid %6.6x exchange closed\n", + fsp, fsp->rport->port_id); fc_fcp_retry_cmd(fsp); break; @@ -1622,8 +1644,8 @@ static void fc_fcp_rec_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp) * Assume REC or LS_ACC was lost. * The exchange manager will have aborted REC, so retry. */ - FC_FCP_DBG(fsp, "REC fid %6.6x error error %d retry %d/%d\n", - fsp->rport->port_id, error, fsp->recov_retry, + FC_FCP_DBG(fsp, "REC %p fid %6.6x exchange timeout retry %d/%d\n", + fsp, fsp->rport->port_id, fsp->recov_retry, FC_MAX_RECOV_RETRY); if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY) fc_fcp_rec(fsp); @@ -1642,6 +1664,7 @@ out: */ static void fc_fcp_recovery(struct fc_fcp_pkt *fsp, u8 code) { + FC_FCP_DBG(fsp, "start recovery code %x\n", code); fsp->status_code = code; fsp->cdb_status = 0; fsp->io_status = 0; @@ -1768,12 +1791,14 @@ static void fc_fcp_srr_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp) goto out; switch (PTR_ERR(fp)) { case -FC_EX_TIMEOUT: + FC_FCP_DBG(fsp, "SRR timeout, retries %d\n", fsp->recov_retry); if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY) fc_fcp_rec(fsp); else fc_fcp_recovery(fsp, FC_TIMED_OUT); break; case -FC_EX_CLOSED: /* e.g., link failure */ + FC_FCP_DBG(fsp, "SRR error, exchange closed\n"); /* fall through */ default: fc_fcp_retry_cmd(fsp); |