We only ever use the 'fp' argument for fc_rport_error() to
encapsulate the error code, so we can as well do away with that
and pass the error directly.
Signed-off-by: Hannes Reinecke <hare@xxxxxxxx>
---
drivers/scsi/libfc/fc_rport.c | 97 +++++++++++++++++++++++++------------------
include/scsi/libfc.h | 5 +++
2 files changed, 62 insertions(+), 40 deletions(-)
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index 8fad3e9..ec608ef 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -85,8 +85,8 @@ static void fc_rport_recv_prli_req(struct fc_rport_priv *, struct fc_frame *);
static void fc_rport_recv_prlo_req(struct fc_rport_priv *, struct fc_frame *);
static void fc_rport_recv_logo_req(struct fc_lport *, struct fc_frame *);
static void fc_rport_timeout(struct work_struct *);
-static void fc_rport_error(struct fc_rport_priv *, struct fc_frame *);
-static void fc_rport_error_retry(struct fc_rport_priv *, struct fc_frame *);
+static void fc_rport_error(struct fc_rport_priv *, int);
+static void fc_rport_error_retry(struct fc_rport_priv *, int);
static void fc_rport_work(struct work_struct *);
static const char *fc_rport_state_names[] = {
@@ -584,18 +584,17 @@ static void fc_rport_timeout(struct work_struct *work)
/**
* fc_rport_error() - Error handler, called once retries have been exhausted
* @rdata: The remote port the error is happened on
- * @fp: The error code encapsulated in a frame pointer
+ * @err: The error code
*
* Locking Note: The rport lock is expected to be held before
* calling this routine
*
* Reference counting: does not modify kref
*/
-static void fc_rport_error(struct fc_rport_priv *rdata, struct fc_frame *fp)
+static void fc_rport_error(struct fc_rport_priv *rdata, int err)
{
- FC_RPORT_DBG(rdata, "Error %ld in state %s, retries %d\n",
- IS_ERR(fp) ? -PTR_ERR(fp) : 0,
- fc_rport_state(rdata), rdata->retries);
+ FC_RPORT_DBG(rdata, "Error %d in state %s, retries %d\n",
+ -err, fc_rport_state(rdata), rdata->retries);
switch (rdata->rp_state) {
case RPORT_ST_FLOGI:
@@ -621,7 +620,7 @@ static void fc_rport_error(struct fc_rport_priv *rdata, struct fc_frame *fp)
/**
* fc_rport_error_retry() - Handler for remote port state retries
* @rdata: The remote port whose state is to be retried
- * @fp: The error code encapsulated in a frame pointer
+ * @err: The error code
*
* If the error was an exchange timeout retry immediately,
* otherwise wait for E_D_TOV.
@@ -631,22 +630,21 @@ static void fc_rport_error(struct fc_rport_priv *rdata, struct fc_frame *fp)
*
* Reference counting: increments kref when scheduling retry_work
*/
-static void fc_rport_error_retry(struct fc_rport_priv *rdata,
- struct fc_frame *fp)
+static void fc_rport_error_retry(struct fc_rport_priv *rdata, int err)
{
unsigned long delay = msecs_to_jiffies(rdata->e_d_tov);
struct fc_lport *lport = rdata->local_port;
/* make sure this isn't an FC_EX_CLOSED error, never retry those */
- if (PTR_ERR(fp) == -FC_EX_CLOSED)
+ if (err == -FC_EX_CLOSED)
goto out;
if (rdata->retries < rdata->local_port->max_rport_retry_count) {
- FC_RPORT_DBG(rdata, "Error %ld in state %s, retrying\n",
- PTR_ERR(fp), fc_rport_state(rdata));
+ FC_RPORT_DBG(rdata, "Error %d in state %s, retrying\n",
+ err, fc_rport_state(rdata));
rdata->retries++;
/* no additional delay on exchange timeouts */
- if (PTR_ERR(fp) == -FC_EX_TIMEOUT)
+ if (err == -FC_EX_TIMEOUT)
delay = 0;
kref_get(&rdata->kref);
if (!schedule_delayed_work(&rdata->retry_work, delay))
@@ -655,7 +653,7 @@ static void fc_rport_error_retry(struct fc_rport_priv *rdata,
}
out:
- fc_rport_error(rdata, fp);
+ fc_rport_error(rdata, err);
}
/**
@@ -715,8 +713,10 @@ static void fc_rport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_lport *lport = rdata->local_port;
struct fc_els_flogi *flogi;
unsigned int r_a_tov;
+ int err = 0;
- FC_RPORT_DBG(rdata, "Received a FLOGI %s\n", fc_els_resp_type(fp));
+ FC_RPORT_DBG(rdata, "Received a FLOGI %s\n",
+ IS_ERR(fp)? "error" : fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
goto put;
@@ -732,18 +732,30 @@ static void fc_rport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
}
if (IS_ERR(fp)) {
- fc_rport_error(rdata, fp);
+ fc_rport_error(rdata, PTR_ERR(fp));
goto err;
}
- if (fc_frame_payload_op(fp) != ELS_LS_ACC)
+ if (fc_frame_payload_op(fp) != ELS_LS_ACC) {
+ struct fc_els_ls_rjt *rjt;
+
+ rjt = fc_frame_payload_get(fp, sizeof (*rjt));
+ FC_RPORT_DBG(rdata, "FLOGI ELS rejected, reason %x expl %x\n",
+ rjt->er_reason, rjt->er_explan);
+ err = -FC_EX_ELS_RJT;
goto bad;
- if (fc_rport_login_complete(rdata, fp))
+ }
+ if (fc_rport_login_complete(rdata, fp)) {
+ FC_RPORT_DBG(rdata, "FLOGI failed, no login\n");
+ err = -FC_EX_INV_LOGIN;
goto bad;
+ }
flogi = fc_frame_payload_get(fp, sizeof(*flogi));
- if (!flogi)
+ if (!flogi) {
+ err = -FC_EX_ALLOC_ERR;
goto bad;
+ }
r_a_tov = ntohl(flogi->fl_csp.sp_r_a_tov);
if (r_a_tov > rdata->r_a_tov)
rdata->r_a_tov = r_a_tov;
@@ -761,7 +773,7 @@ put:
return;
bad:
FC_RPORT_DBG(rdata, "Bad FLOGI response\n");
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, err);
goto out;
}
@@ -789,13 +801,13 @@ static void fc_rport_enter_flogi(struct fc_rport_priv *rdata)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
if (!fp)
- return fc_rport_error_retry(rdata, fp);
+ return fc_rport_error_retry(rdata, -FC_EX_ALLOC_ERR);
kref_get(&rdata->kref);
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_FLOGI,
fc_rport_flogi_resp, rdata,
2 * lport->r_a_tov)) {
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}
}
@@ -952,7 +964,7 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
}
if (IS_ERR(fp)) {
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, PTR_ERR(fp));
goto err;
}
@@ -974,9 +986,14 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
rdata->max_seq = csp_seq;
rdata->maxframe_size = fc_plogi_get_maxframe(plp, lport->mfs);
fc_rport_enter_prli(rdata);
- } else
- fc_rport_error_retry(rdata, fp);
+ } else {
+ struct fc_els_ls_rjt *rjt;
+ rjt = fc_frame_payload_get(fp, sizeof (*rjt));
+ FC_RPORT_DBG(rdata, "PLOGI ELS rejected, reason %x expl %x\n",
+ rjt->er_reason, rjt->er_explan);
+ fc_rport_error_retry(rdata, -FC_EX_ELS_RJT);
+ }
out:
fc_frame_free(fp);
err:
@@ -1027,7 +1044,7 @@ static void fc_rport_enter_plogi(struct fc_rport_priv *rdata)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
if (!fp) {
FC_RPORT_DBG(rdata, "%s frame alloc failed\n", __func__);
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, -FC_EX_ALLOC_ERR);
return;
}
rdata->e_d_tov = lport->e_d_tov;
@@ -1036,7 +1053,7 @@ static void fc_rport_enter_plogi(struct fc_rport_priv *rdata)
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PLOGI,
fc_rport_plogi_resp, rdata,
2 * lport->r_a_tov)) {
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}
}
@@ -1080,7 +1097,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
}
if (IS_ERR(fp)) {
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, PTR_ERR(fp));
goto err;
}
@@ -1099,9 +1116,9 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
rdata->spp_type = pp->spp.spp_type;
if (resp_code != FC_SPP_RESP_ACK) {
if (resp_code == FC_SPP_RESP_CONF)
- fc_rport_error(rdata, fp);
+ fc_rport_error(rdata, -FC_EX_SEQ_ERR);
else
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, -FC_EX_SEQ_ERR);
goto out;
}
if (pp->prli.prli_spp_len < sizeof(pp->spp))
@@ -1133,7 +1150,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
rjt = fc_frame_payload_get(fp, sizeof (*rjt));
FC_RPORT_DBG(rdata, "PRLI ELS rejected, reason %x expl %x\n",
rjt->er_reason, rjt->er_explan);
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, FC_EX_ELS_RJT);
}
out:
@@ -1178,7 +1195,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
fp = fc_frame_alloc(lport, sizeof(*pp));
if (!fp) {
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, -FC_EX_ALLOC_ERR);
return;
}
@@ -1197,7 +1214,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
kref_get(&rdata->kref);
if (!lport->tt.exch_seq_send(lport, fp, fc_rport_prli_resp,
NULL, rdata, 2 * lport->r_a_tov)) {
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}
}
@@ -1233,7 +1250,7 @@ static void fc_rport_rtv_resp(struct fc_seq *sp, struct fc_frame *fp,
}
if (IS_ERR(fp)) {
- fc_rport_error(rdata, fp);
+ fc_rport_error(rdata, PTR_ERR(fp));
goto err;
}
@@ -1289,7 +1306,7 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_rtv));
if (!fp) {
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, -FC_EX_ALLOC_ERR);
return;
}
@@ -1297,7 +1314,7 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_RTV,
fc_rport_rtv_resp, rdata,
2 * lport->r_a_tov)) {
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}
}
@@ -1377,7 +1394,7 @@ static void fc_rport_adisc_resp(struct fc_seq *sp, struct fc_frame *fp,
}
if (IS_ERR(fp)) {
- fc_rport_error(rdata, fp);
+ fc_rport_error(rdata, PTR_ERR(fp));
goto err;
}
@@ -1426,14 +1443,14 @@ static void fc_rport_enter_adisc(struct fc_rport_priv *rdata)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_adisc));
if (!fp) {
- fc_rport_error_retry(rdata, fp);
+ fc_rport_error_retry(rdata, -FC_EX_ALLOC_ERR);
return;
}
kref_get(&rdata->kref);
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_ADISC,
fc_rport_adisc_resp, rdata,
2 * lport->r_a_tov)) {
- fc_rport_error_retry(rdata, NULL);
+ fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}
}
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 7428a53..dc42d80 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -44,6 +44,11 @@
#define FC_NO_ERR 0 /* no error */
#define FC_EX_TIMEOUT 1 /* Exchange timeout */
#define FC_EX_CLOSED 2 /* Exchange closed */
+#define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */
+#define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */
+#define FC_EX_ELS_RJT 5 /* ELS rejected */
+#define FC_EX_INV_LOGIN 6 /* Login not completed */
+#define FC_EX_SEQ_ERR 6 /* Exchange sequence error */
/**
* enum fc_lport_state - Local port states
--
1.8.5.6
--
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