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scsi: libfc: Replace ->exch_seq_send callback with function call

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The ->exch_seq_send callback only ever had one implementation,
so we can call the function directly and drop the callback.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-10-18 10:01:38 +02:00 committed by Martin K. Petersen
parent c5cb444c31
commit 3afd2d1521
6 changed files with 45 additions and 55 deletions
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2
drivers/scsi/libfc/fc_elsct.c
View File

@ -67,7 +67,7 @@ struct fc_seq *fc_elsct_send(struct fc_lport *lport, u32 did,
fc_fill_fc_hdr(fp, r_ctl, did, lport->port_id, fh_type,
FC_FCTL_REQ, 0);
return lport->tt.exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
return fc_exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
}
EXPORT_SYMBOL(fc_elsct_send);

37
drivers/scsi/libfc/fc_exch.c
View File

@ -2127,6 +2127,24 @@ static void fc_exch_rrq_resp(struct fc_seq *sp, struct fc_frame *fp, void *arg)
* @arg: The argument to be passed to the response handler
* @timer_msec: The timeout period for the exchange
*
* The exchange response handler is set in this routine to resp()
* function pointer. It can be called in two scenarios: if a timeout
* occurs or if a response frame is received for the exchange. The
* fc_frame pointer in response handler will also indicate timeout
* as error using IS_ERR related macros.
*
* The exchange destructor handler is also set in this routine.
* The destructor handler is invoked by EM layer when exchange
* is about to free, this can be used by caller to free its
* resources along with exchange free.
*
* The arg is passed back to resp and destructor handler.
*
* The timeout value (in msec) for an exchange is set if non zero
* timer_msec argument is specified. The timer is canceled when
* it fires or when the exchange is done. The exchange timeout handler
* is registered by EM layer.
*
* The frame pointer with some of the header's fields must be
* filled before calling this routine, those fields are:
*
@ -2137,14 +2155,13 @@ static void fc_exch_rrq_resp(struct fc_seq *sp, struct fc_frame *fp, void *arg)
* - frame control
* - parameter or relative offset
*/
static struct fc_seq *fc_exch_seq_send(struct fc_lport *lport,
struct fc_frame *fp,
void (*resp)(struct fc_seq *,
struct fc_frame *fp,
void *arg),
void (*destructor)(struct fc_seq *,
void *),
void *arg, u32 timer_msec)
struct fc_seq *fc_exch_seq_send(struct fc_lport *lport,
struct fc_frame *fp,
void (*resp)(struct fc_seq *,
struct fc_frame *fp,
void *arg),
void (*destructor)(struct fc_seq *, void *),
void *arg, u32 timer_msec)
{
struct fc_exch *ep;
struct fc_seq *sp = NULL;
@ -2197,6 +2214,7 @@ static struct fc_seq *fc_exch_seq_send(struct fc_lport *lport,
fc_exch_delete(ep);
return NULL;
}
EXPORT_SYMBOL(fc_exch_seq_send);
/**
* fc_exch_rrq() - Send an ELS RRQ (Reinstate Recovery Qualifier) command
@ -2630,9 +2648,6 @@ int fc_exch_init(struct fc_lport *lport)
if (!lport->tt.seq_set_resp)
lport->tt.seq_set_resp = fc_seq_set_resp;
if (!lport->tt.exch_seq_send)
lport->tt.exch_seq_send = fc_exch_seq_send;
if (!lport->tt.seq_send)
lport->tt.seq_send = fc_seq_send;

11
drivers/scsi/libfc/fc_fcp.c
View File

@ -196,7 +196,7 @@ static void fc_fcp_pkt_hold(struct fc_fcp_pkt *fsp)
* @seq: The sequence that the FCP packet is on (required by destructor API)
* @fsp: The FCP packet to be released
*
* This routine is called by a destructor callback in the exch_seq_send()
* This routine is called by a destructor callback in the fc_exch_seq_send()
* routine of the libfc Transport Template. The 'struct fc_seq' is a required
* argument even though it is not used by this routine.
*
@ -1206,8 +1206,7 @@ static int fc_fcp_cmd_send(struct fc_lport *lport, struct fc_fcp_pkt *fsp,
rpriv->local_port->port_id, FC_TYPE_FCP,
FC_FCTL_REQ, 0);
seq = lport->tt.exch_seq_send(lport, fp, resp, fc_fcp_pkt_destroy,
fsp, 0);
seq = fc_exch_seq_send(lport, fp, resp, fc_fcp_pkt_destroy, fsp, 0);
if (!seq) {
rc = -1;
goto unlock;
@ -1757,9 +1756,9 @@ static void fc_fcp_srr(struct fc_fcp_pkt *fsp, enum fc_rctl r_ctl, u32 offset)
rpriv->local_port->port_id, FC_TYPE_FCP,
FC_FCTL_REQ, 0);
seq = lport->tt.exch_seq_send(lport, fp, fc_fcp_srr_resp,
fc_fcp_pkt_destroy,
fsp, get_fsp_rec_tov(fsp));
seq = fc_exch_seq_send(lport, fp, fc_fcp_srr_resp,
fc_fcp_pkt_destroy,
fsp, get_fsp_rec_tov(fsp));
if (!seq)
goto retry;

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

@ -2006,8 +2006,8 @@ static int fc_lport_els_request(struct fc_bsg_job *job,
info->nents = job->reply_payload.sg_cnt;
info->sg = job->reply_payload.sg_list;
if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp,
NULL, info, tov)) {
if (!fc_exch_seq_send(lport, fp, fc_lport_bsg_resp,
NULL, info, tov)) {
kfree(info);
return -ECOMM;
}
@ -2067,8 +2067,8 @@ static int fc_lport_ct_request(struct fc_bsg_job *job,
info->nents = job->reply_payload.sg_cnt;
info->sg = job->reply_payload.sg_list;
if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp,
NULL, info, tov)) {
if (!fc_exch_seq_send(lport, fp, fc_lport_bsg_resp,
NULL, info, tov)) {
kfree(info);
return -ECOMM;
}

4
drivers/scsi/libfc/fc_rport.c
View File

@ -1282,8 +1282,8 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0);
kref_get(&rdata->kref);
if (!lport->tt.exch_seq_send(lport, fp, fc_rport_prli_resp,
NULL, rdata, 2 * lport->r_a_tov)) {
if (!fc_exch_seq_send(lport, fp, fc_rport_prli_resp,
NULL, rdata, 2 * lport->r_a_tov)) {
fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
}

38
include/scsi/libfc.h
View File

@ -484,37 +484,6 @@ struct libfc_function_template {
struct fc_frame *, void *arg),
void *arg, u32 timer_msec);
/*
* Send the FC frame payload using a new exchange and sequence.
*
* The exchange response handler is set in this routine to resp()
* function pointer. It can be called in two scenarios: if a timeout
* occurs or if a response frame is received for the exchange. The
* fc_frame pointer in response handler will also indicate timeout
* as error using IS_ERR related macros.
*
* The exchange destructor handler is also set in this routine.
* The destructor handler is invoked by EM layer when exchange
* is about to free, this can be used by caller to free its
* resources along with exchange free.
*
* The arg is passed back to resp and destructor handler.
*
* The timeout value (in msec) for an exchange is set if non zero
* timer_msec argument is specified. The timer is canceled when
* it fires or when the exchange is done. The exchange timeout handler
* is registered by EM layer.
*
* STATUS: OPTIONAL
*/
struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *,
void (*resp)(struct fc_seq *,
struct fc_frame *,
void *),
void (*destructor)(struct fc_seq *,
void *),
void *, unsigned int timer_msec);
/*
* Sets up the DDP context for a given exchange id on the given
* scatterlist if LLD supports DDP for large receive.
@ -1117,6 +1086,13 @@ void fc_fill_hdr(struct fc_frame *, const struct fc_frame *,
*****************************/
int fc_exch_init(struct fc_lport *);
void fc_exch_update_stats(struct fc_lport *lport);
struct fc_seq *fc_exch_seq_send(struct fc_lport *lport,
struct fc_frame *fp,
void (*resp)(struct fc_seq *,
struct fc_frame *fp,
void *arg),
void (*destructor)(struct fc_seq *, void *),
void *arg, u32 timer_msec);
void fc_seq_els_rsp_send(struct fc_frame *, enum fc_els_cmd,
struct fc_seq_els_data *);
struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,