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[SCSI] libfc: improve debug messages for ELS response handlers

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Improve lport and rport debug messages to indicate whether
the response is LS_ACC, LS_RJT, closed, or timeout.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2009-08-25 14:03:21 -07:00 committed by James Bottomley
parent 25b37b981e
commit f657d299cf
4 changed files with 57 additions and 14 deletions
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38
drivers/scsi/libfc/fc_elsct.c
View File

@ -70,3 +70,41 @@ int fc_elsct_init(struct fc_lport *lport)
return 0;
}
EXPORT_SYMBOL(fc_elsct_init);
/**
* fc_els_resp_type() - return string describing ELS response for debug.
* @fp: frame pointer with possible error code.
*/
const char *fc_els_resp_type(struct fc_frame *fp)
{
const char *msg;
if (IS_ERR(fp)) {
switch (-PTR_ERR(fp)) {
case FC_NO_ERR:
msg = "response no error";
break;
case FC_EX_TIMEOUT:
msg = "response timeout";
break;
case FC_EX_CLOSED:
msg = "response closed";
break;
default:
msg = "response unknown error";
break;
}
} else {
switch (fc_frame_payload_op(fp)) {
case ELS_LS_ACC:
msg = "accept";
break;
case ELS_LS_RJT:
msg = "reject";
break;
default:
msg = "response unknown ELS";
break;
}
}
return msg;
}

20
drivers/scsi/libfc/fc_lport.c
View File

@ -1006,13 +1006,13 @@ static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_frame_header *fh;
struct fc_ct_hdr *ct;
FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
FC_LPORT_DBG(lport, "Received a RFT_ID response\n");
if (lport->state != LPORT_ST_RFT_ID) {
FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state "
"%s\n", fc_lport_state(lport));
@ -1060,13 +1060,13 @@ static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_frame_header *fh;
struct fc_ct_hdr *ct;
FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
FC_LPORT_DBG(lport, "Received a RPN_ID response\n");
if (lport->state != LPORT_ST_RPN_ID) {
FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state "
"%s\n", fc_lport_state(lport));
@ -1112,13 +1112,13 @@ static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_lport *lport = lp_arg;
u8 op;
FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
FC_LPORT_DBG(lport, "Received a SCR response\n");
if (lport->state != LPORT_ST_SCR) {
FC_LPORT_DBG(lport, "Received a SCR response, but in state "
"%s\n", fc_lport_state(lport));
@ -1333,13 +1333,13 @@ static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_lport *lport = lp_arg;
u8 op;
FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
FC_LPORT_DBG(lport, "Received a LOGO response\n");
if (lport->state != LPORT_ST_LOGO) {
FC_LPORT_DBG(lport, "Received a LOGO response, but in state "
"%s\n", fc_lport_state(lport));
@ -1415,13 +1415,13 @@ static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
unsigned int e_d_tov;
u16 mfs;
FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
FC_LPORT_DBG(lport, "Received a FLOGI response\n");
if (lport->state != LPORT_ST_FLOGI) {
FC_LPORT_DBG(lport, "Received a FLOGI response, but in state "
"%s\n", fc_lport_state(lport));

8
drivers/scsi/libfc/fc_rport.c
View File

@ -544,7 +544,7 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Received a PLOGI response\n");
FC_RPORT_DBG(rdata, "Received a PLOGI %s\n", fc_els_resp_type(fp));
if (rdata->rp_state != RPORT_ST_PLOGI) {
FC_RPORT_DBG(rdata, "Received a PLOGI response, but in state "
@ -651,7 +651,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Received a PRLI response\n");
FC_RPORT_DBG(rdata, "Received a PRLI %s\n", fc_els_resp_type(fp));
if (rdata->rp_state != RPORT_ST_PRLI) {
FC_RPORT_DBG(rdata, "Received a PRLI response, but in state "
@ -717,7 +717,7 @@ static void fc_rport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Received a LOGO response\n");
FC_RPORT_DBG(rdata, "Received a LOGO %s\n", fc_els_resp_type(fp));
if (rdata->rp_state != RPORT_ST_LOGO) {
FC_RPORT_DBG(rdata, "Received a LOGO response, but in state "
@ -801,7 +801,7 @@ static void fc_rport_rtv_resp(struct fc_seq *sp, struct fc_frame *fp,
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Received a RTV response\n");
FC_RPORT_DBG(rdata, "Received a RTV %s\n", fc_els_resp_type(fp));
if (rdata->rp_state != RPORT_ST_RTV) {
FC_RPORT_DBG(rdata, "Received a RTV response, but in state "

5
include/scsi/libfc.h
View File

@ -1084,4 +1084,9 @@ void fc_destroy_exch_mgr(void);
int fc_setup_rport(void);
void fc_destroy_rport(void);
/*
* Internal libfc functions.
*/
const char *fc_els_resp_type(struct fc_frame *);
#endif /* _LIBFC_H_ */