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path: root/drivers/scsi/libfc/fc_fcp.c
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Diffstat (limited to 'drivers/scsi/libfc/fc_fcp.c')
-rw-r--r--drivers/scsi/libfc/fc_fcp.c97
1 files changed, 50 insertions, 47 deletions
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index ad8b747837b0..e303e0d12c4b 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -43,13 +43,9 @@ MODULE_AUTHOR("Open-FCoE.org");
MODULE_DESCRIPTION("libfc");
MODULE_LICENSE("GPL v2");
-static int fc_fcp_debug;
-
-#define FC_DEBUG_FCP(fmt...) \
- do { \
- if (fc_fcp_debug) \
- FC_DBG(fmt); \
- } while (0)
+unsigned int fc_debug_logging;
+module_param_named(debug_logging, fc_debug_logging, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
static struct kmem_cache *scsi_pkt_cachep;
@@ -347,8 +343,8 @@ static void fc_fcp_recv_data(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
if ((fr_flags(fp) & FCPHF_CRC_UNCHECKED) &&
fc_frame_crc_check(fp))
goto crc_err;
- FC_DEBUG_FCP("data received past end. len %zx offset %zx "
- "data_len %x\n", len, offset, fsp->data_len);
+ FC_FCP_DBG(fsp, "data received past end. len %zx offset %zx "
+ "data_len %x\n", len, offset, fsp->data_len);
fc_fcp_retry_cmd(fsp);
return;
}
@@ -411,7 +407,8 @@ crc_err:
stats->ErrorFrames++;
/* FIXME - per cpu count, not total count! */
if (stats->InvalidCRCCount++ < 5)
- printk(KERN_WARNING "CRC error on data frame for port (%6x)\n",
+ printk(KERN_WARNING "libfc: CRC error on data "
+ "frame for port (%6x)\n",
fc_host_port_id(lp->host));
/*
* Assume the frame is total garbage.
@@ -475,14 +472,14 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq,
WARN_ON(seq_blen <= 0);
if (unlikely(offset + seq_blen > fsp->data_len)) {
/* this should never happen */
- FC_DEBUG_FCP("xfer-ready past end. seq_blen %zx offset %zx\n",
- seq_blen, offset);
+ FC_FCP_DBG(fsp, "xfer-ready past end. seq_blen %zx "
+ "offset %zx\n", seq_blen, offset);
fc_fcp_send_abort(fsp);
return 0;
} else if (offset != fsp->xfer_len) {
/* Out of Order Data Request - no problem, but unexpected. */
- FC_DEBUG_FCP("xfer-ready non-contiguous. "
- "seq_blen %zx offset %zx\n", seq_blen, offset);
+ FC_FCP_DBG(fsp, "xfer-ready non-contiguous. "
+ "seq_blen %zx offset %zx\n", seq_blen, offset);
}
/*
@@ -493,7 +490,7 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq,
t_blen = fsp->max_payload;
if (lp->seq_offload) {
t_blen = min(seq_blen, (size_t)lp->lso_max);
- FC_DEBUG_FCP("fsp=%p:lso:blen=%zx lso_max=0x%x t_blen=%zx\n",
+ FC_FCP_DBG(fsp, "fsp=%p:lso:blen=%zx lso_max=0x%x t_blen=%zx\n",
fsp, seq_blen, lp->lso_max, t_blen);
}
@@ -694,7 +691,7 @@ static void fc_fcp_reduce_can_queue(struct fc_lport *lp)
if (!can_queue)
can_queue = 1;
lp->host->can_queue = can_queue;
- shost_printk(KERN_ERR, lp->host, "Could not allocate frame.\n"
+ shost_printk(KERN_ERR, lp->host, "libfc: Could not allocate frame.\n"
"Reducing can_queue to %d.\n", can_queue);
done:
spin_unlock_irqrestore(lp->host->host_lock, flags);
@@ -768,7 +765,7 @@ static void fc_fcp_recv(struct fc_seq *seq, struct fc_frame *fp, void *arg)
fc_fcp_resp(fsp, fp);
} else {
- FC_DBG("unexpected frame. r_ctl %x\n", r_ctl);
+ FC_FCP_DBG(fsp, "unexpected frame. r_ctl %x\n", r_ctl);
}
unlock:
fc_fcp_unlock_pkt(fsp);
@@ -877,17 +874,17 @@ static void fc_fcp_resp(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
return;
}
fsp->status_code = FC_DATA_OVRRUN;
- FC_DBG("tgt %6x xfer len %zx greater than expected len %x. "
- "data len %x\n",
- fsp->rport->port_id,
- fsp->xfer_len, expected_len, fsp->data_len);
+ FC_FCP_DBG(fsp, "tgt %6x xfer len %zx greater than expected, "
+ "len %x, data len %x\n",
+ fsp->rport->port_id,
+ fsp->xfer_len, expected_len, fsp->data_len);
}
fc_fcp_complete_locked(fsp);
return;
len_err:
- FC_DBG("short FCP response. flags 0x%x len %u respl %u snsl %u\n",
- flags, fr_len(fp), respl, snsl);
+ FC_FCP_DBG(fsp, "short FCP response. flags 0x%x len %u respl %u "
+ "snsl %u\n", flags, fr_len(fp), respl, snsl);
err:
fsp->status_code = FC_ERROR;
fc_fcp_complete_locked(fsp);
@@ -1107,13 +1104,11 @@ static void fc_fcp_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
if (fc_fcp_lock_pkt(fsp))
return;
- switch (error) {
- case -FC_EX_CLOSED:
+ if (error == -FC_EX_CLOSED) {
fc_fcp_retry_cmd(fsp);
goto unlock;
- default:
- FC_DBG("unknown error %ld\n", PTR_ERR(fp));
}
+
/*
* clear abort pending, because the lower layer
* decided to force completion.
@@ -1145,10 +1140,10 @@ static int fc_fcp_pkt_abort(struct fc_lport *lp, struct fc_fcp_pkt *fsp)
fsp->wait_for_comp = 0;
if (!rc) {
- FC_DBG("target abort cmd failed\n");
+ FC_FCP_DBG(fsp, "target abort cmd failed\n");
rc = FAILED;
} else if (fsp->state & FC_SRB_ABORTED) {
- FC_DBG("target abort cmd passed\n");
+ FC_FCP_DBG(fsp, "target abort cmd passed\n");
rc = SUCCESS;
fc_fcp_complete_locked(fsp);
}
@@ -1213,7 +1208,7 @@ static int fc_lun_reset(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
spin_unlock_bh(&fsp->scsi_pkt_lock);
if (!rc) {
- FC_DBG("lun reset failed\n");
+ FC_SCSI_DBG(lp, "lun reset failed\n");
return FAILED;
}
@@ -1221,7 +1216,7 @@ static int fc_lun_reset(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
if (fsp->cdb_status != FCP_TMF_CMPL)
return FAILED;
- FC_DBG("lun reset to lun %u completed\n", lun);
+ FC_SCSI_DBG(lp, "lun reset to lun %u completed\n", lun);
fc_fcp_cleanup_each_cmd(lp, id, lun, FC_CMD_ABORTED);
return SUCCESS;
}
@@ -1388,13 +1383,13 @@ 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_DEBUG_FCP("device %x unexpected REC reject "
- "reason %d expl %d\n",
- fsp->rport->port_id, rjt->er_reason,
- rjt->er_explan);
+ FC_FCP_DBG(fsp, "device %x unexpected REC reject "
+ "reason %d expl %d\n",
+ fsp->rport->port_id, rjt->er_reason,
+ rjt->er_explan);
/* fall through */
case ELS_RJT_UNSUP:
- FC_DEBUG_FCP("device does not support REC\n");
+ FC_FCP_DBG(fsp, "device does not support REC\n");
rp = fsp->rport->dd_data;
/*
* if we do not spport RECs or got some bogus
@@ -1514,8 +1509,8 @@ static void fc_fcp_rec_error(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
break;
default:
- FC_DBG("REC %p fid %x error unexpected error %d\n",
- fsp, fsp->rport->port_id, error);
+ FC_FCP_DBG(fsp, "REC %p fid %x error unexpected error %d\n",
+ fsp, fsp->rport->port_id, error);
fsp->status_code = FC_CMD_PLOGO;
/* fall through */
@@ -1524,9 +1519,9 @@ 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_DBG("REC fid %x error error %d retry %d/%d\n",
- fsp->rport->port_id, error, fsp->recov_retry,
- FC_MAX_RECOV_RETRY);
+ FC_FCP_DBG(fsp, "REC fid %x error error %d retry %d/%d\n",
+ fsp->rport->port_id, error, fsp->recov_retry,
+ FC_MAX_RECOV_RETRY);
if (fsp->recov_retry++ < FC_MAX_RECOV_RETRY)
fc_fcp_rec(fsp);
else
@@ -2011,9 +2006,11 @@ int fc_eh_device_reset(struct scsi_cmnd *sc_cmd)
if (lp->state != LPORT_ST_READY)
return rc;
+ FC_SCSI_DBG(lp, "Resetting rport (%6x)\n", rport->port_id);
+
fsp = fc_fcp_pkt_alloc(lp, GFP_NOIO);
if (fsp == NULL) {
- FC_DBG("could not allocate scsi_pkt\n");
+ printk(KERN_WARNING "libfc: could not allocate scsi_pkt\n");
sc_cmd->result = DID_NO_CONNECT << 16;
goto out;
}
@@ -2048,17 +2045,21 @@ int fc_eh_host_reset(struct scsi_cmnd *sc_cmd)
struct fc_lport *lp = shost_priv(shost);
unsigned long wait_tmo;
+ FC_SCSI_DBG(lp, "Resetting host\n");
+
lp->tt.lport_reset(lp);
wait_tmo = jiffies + FC_HOST_RESET_TIMEOUT;
while (!fc_fcp_lport_queue_ready(lp) && time_before(jiffies, wait_tmo))
msleep(1000);
if (fc_fcp_lport_queue_ready(lp)) {
- shost_printk(KERN_INFO, shost, "Host reset succeeded.\n");
+ shost_printk(KERN_INFO, shost, "libfc: Host reset succeeded "
+ "on port (%6x)\n", fc_host_port_id(lp->host));
return SUCCESS;
} else {
- shost_printk(KERN_INFO, shost, "Host reset failed. "
- "lport not ready.\n");
+ shost_printk(KERN_INFO, shost, "libfc: Host reset failed, "
+ "port (%6x) is not ready.\n",
+ fc_host_port_id(lp->host));
return FAILED;
}
}
@@ -2117,7 +2118,8 @@ void fc_fcp_destroy(struct fc_lport *lp)
struct fc_fcp_internal *si = fc_get_scsi_internal(lp);
if (!list_empty(&si->scsi_pkt_queue))
- printk(KERN_ERR "Leaked scsi packets.\n");
+ printk(KERN_ERR "libfc: Leaked SCSI packets when destroying "
+ "port (%6x)\n", fc_host_port_id(lp->host));
mempool_destroy(si->scsi_pkt_pool);
kfree(si);
@@ -2166,7 +2168,8 @@ static int __init libfc_init(void)
sizeof(struct fc_fcp_pkt),
0, SLAB_HWCACHE_ALIGN, NULL);
if (scsi_pkt_cachep == NULL) {
- FC_DBG("Unable to allocate SRB cache...module load failed!");
+ printk(KERN_ERR "libfc: Unable to allocate SRB cache, "
+ "module load failed!");
return -ENOMEM;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.