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

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The ->rport_destroy callback only ever had one implementation,
so we can as well call it 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 10:01:39 +02:00 committed by Martin K. Petersen
parent 3afd2d1521
commit 944ef9689d
5 changed files with 43 additions and 56 deletions
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12
drivers/scsi/fcoe/fcoe_ctlr.c
View File

@ -2180,7 +2180,7 @@ static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
if (kref_get_unless_zero(&rdata->kref)) {
lport->tt.rport_logoff(rdata);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
rcu_read_unlock();
@ -2566,7 +2566,7 @@ static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *fip, u32 port_id, u8 *mac)
frport = fcoe_ctlr_rport(rdata);
memcpy(mac, frport->enode_mac, ETH_ALEN);
ret = 0;
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
return ret;
}
@ -2678,7 +2678,7 @@ static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
}
frport->time = jiffies;
}
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
return;
}
if (fip->state != FIP_ST_VNMP_UP)
@ -2719,7 +2719,7 @@ static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
continue;
frport = fcoe_ctlr_rport(rdata);
if (!frport->time) {
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
continue;
}
deadline = frport->time +
@ -2732,7 +2732,7 @@ static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
lport->tt.rport_logoff(rdata);
} else if (time_before(deadline, next_time))
next_time = deadline;
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
rcu_read_unlock();
return next_time;
@ -3089,7 +3089,7 @@ static void fcoe_ctlr_vn_disc(struct fcoe_ctlr *fip)
frport = fcoe_ctlr_rport(rdata);
if (frport->time)
lport->tt.rport_login(rdata);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
rcu_read_unlock();
if (callback)

6
drivers/scsi/libfc/fc_disc.c
View File

@ -72,7 +72,7 @@ static void fc_disc_stop_rports(struct fc_disc *disc)
list_for_each_entry_rcu(rdata, &disc->rports, peers) {
if (kref_get_unless_zero(&rdata->kref)) {
lport->tt.rport_logoff(rdata);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
rcu_read_unlock();
@ -303,7 +303,7 @@ static void fc_disc_done(struct fc_disc *disc, enum fc_disc_event event)
else
lport->tt.rport_logoff(rdata);
}
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
rcu_read_unlock();
mutex_unlock(&disc->disc_mutex);
@ -649,7 +649,7 @@ redisc:
mutex_unlock(&disc->disc_mutex);
}
out:
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**

6
drivers/scsi/libfc/fc_lport.c
View File

@ -247,7 +247,7 @@ static void fc_lport_ptp_setup(struct fc_lport *lport,
{
if (lport->ptp_rdata) {
lport->tt.rport_logoff(lport->ptp_rdata);
kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy);
kref_put(&lport->ptp_rdata->kref, fc_rport_destroy);
}
mutex_lock(&lport->disc.disc_mutex);
lport->ptp_rdata = lport->tt.rport_create(lport, remote_fid);
@ -1017,7 +1017,7 @@ static void fc_lport_reset_locked(struct fc_lport *lport)
if (lport->ptp_rdata) {
lport->tt.rport_logoff(lport->ptp_rdata);
kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy);
kref_put(&lport->ptp_rdata->kref, fc_rport_destroy);
lport->ptp_rdata = NULL;
}
@ -2129,7 +2129,7 @@ int fc_lport_bsg_request(struct fc_bsg_job *job)
if (!rdata)
break;
tov = rdata->e_d_tov;
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
rc = fc_lport_ct_request(job, lport, did, tov);

68
drivers/scsi/libfc/fc_rport.c
View File

@ -176,13 +176,14 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport,
* fc_rport_destroy() - Free a remote port after last reference is released
* @kref: The remote port's kref
*/
static void fc_rport_destroy(struct kref *kref)
void fc_rport_destroy(struct kref *kref)
{
struct fc_rport_priv *rdata;
rdata = container_of(kref, struct fc_rport_priv, kref);
kfree_rcu(rdata, rcu);
}
EXPORT_SYMBOL(fc_rport_destroy);
/**
* fc_rport_state() - Return a string identifying the remote port's state
@ -294,7 +295,7 @@ static void fc_rport_work(struct work_struct *work)
if (!rport) {
FC_RPORT_DBG(rdata, "Failed to add the rport\n");
lport->tt.rport_logoff(rdata);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
return;
}
mutex_lock(&rdata->rp_mutex);
@ -320,7 +321,7 @@ static void fc_rport_work(struct work_struct *work)
FC_RPORT_DBG(rdata, "lld callback ev %d\n", event);
rdata->lld_event_callback(lport, rdata, event);
}
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
break;
case RPORT_EV_FAILED:
@ -347,7 +348,7 @@ static void fc_rport_work(struct work_struct *work)
rdata->lld_event_callback(lport, rdata, event);
}
if (cancel_delayed_work_sync(&rdata->retry_work))
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
/*
* Reset any outstanding exchanges before freeing rport.
@ -369,7 +370,7 @@ static void fc_rport_work(struct work_struct *work)
if (port_id == FC_FID_DIR_SERV) {
rdata->event = RPORT_EV_NONE;
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
} else if ((rdata->flags & FC_RP_STARTED) &&
rdata->major_retries <
lport->max_rport_retry_count) {
@ -384,7 +385,7 @@ static void fc_rport_work(struct work_struct *work)
list_del_rcu(&rdata->peers);
mutex_unlock(&lport->disc.disc_mutex);
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
} else {
/*
@ -403,7 +404,7 @@ static void fc_rport_work(struct work_struct *work)
mutex_unlock(&rdata->rp_mutex);
break;
}
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -470,8 +471,6 @@ static int fc_rport_login(struct fc_rport_priv *rdata)
static void fc_rport_enter_delete(struct fc_rport_priv *rdata,
enum fc_rport_event event)
{
struct fc_lport *lport = rdata->local_port;
if (rdata->rp_state == RPORT_ST_DELETE)
return;
@ -482,7 +481,7 @@ static void fc_rport_enter_delete(struct fc_rport_priv *rdata,
kref_get(&rdata->kref);
if (rdata->event == RPORT_EV_NONE &&
!queue_work(rport_event_queue, &rdata->event_work))
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
rdata->event = event;
}
@ -541,8 +540,6 @@ out:
*/
static void fc_rport_enter_ready(struct fc_rport_priv *rdata)
{
struct fc_lport *lport = rdata->local_port;
fc_rport_state_enter(rdata, RPORT_ST_READY);
FC_RPORT_DBG(rdata, "Port is Ready\n");
@ -550,7 +547,7 @@ static void fc_rport_enter_ready(struct fc_rport_priv *rdata)
kref_get(&rdata->kref);
if (rdata->event == RPORT_EV_NONE &&
!queue_work(rport_event_queue, &rdata->event_work))
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
rdata->event = RPORT_EV_READY;
}
@ -569,7 +566,6 @@ static void fc_rport_timeout(struct work_struct *work)
{
struct fc_rport_priv *rdata =
container_of(work, struct fc_rport_priv, retry_work.work);
struct fc_lport *lport = rdata->local_port;
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Port timeout, state %s\n", fc_rport_state(rdata));
@ -598,7 +594,7 @@ static void fc_rport_timeout(struct work_struct *work)
}
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -661,7 +657,6 @@ static void fc_rport_error(struct fc_rport_priv *rdata, int err)
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 (err == -FC_EX_CLOSED)
@ -676,7 +671,7 @@ static void fc_rport_error_retry(struct fc_rport_priv *rdata, int err)
delay = 0;
kref_get(&rdata->kref);
if (!schedule_delayed_work(&rdata->retry_work, delay))
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
return;
}
@ -802,7 +797,7 @@ out:
err:
mutex_unlock(&rdata->rp_mutex);
put:
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
return;
bad:
FC_RPORT_DBG(rdata, "Bad FLOGI response\n");
@ -841,7 +836,7 @@ static void fc_rport_enter_flogi(struct fc_rport_priv *rdata)
fc_rport_flogi_resp, rdata,
2 * lport->r_a_tov)) {
fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
@ -960,12 +955,12 @@ static void fc_rport_recv_flogi_req(struct fc_lport *lport,
}
out:
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
fc_frame_free(rx_fp);
return;
reject_put:
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
reject:
fc_seq_els_rsp_send(rx_fp, ELS_LS_RJT, &rjt_data);
fc_frame_free(rx_fp);
@ -1042,7 +1037,7 @@ out:
err:
mutex_unlock(&rdata->rp_mutex);
put:
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
static bool
@ -1098,7 +1093,7 @@ static void fc_rport_enter_plogi(struct fc_rport_priv *rdata)
fc_rport_plogi_resp, rdata,
2 * lport->r_a_tov)) {
fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
@ -1218,7 +1213,7 @@ out:
err:
mutex_unlock(&rdata->rp_mutex);
put:
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -1285,7 +1280,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
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);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
@ -1358,7 +1353,7 @@ out:
err:
mutex_unlock(&rdata->rp_mutex);
put:
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -1391,7 +1386,7 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
fc_rport_rtv_resp, rdata,
2 * lport->r_a_tov)) {
fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
@ -1446,7 +1441,7 @@ static void fc_rport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
"Received a LOGO %s\n", fc_els_resp_type(fp));
if (!IS_ERR(fp))
fc_frame_free(fp);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -1472,7 +1467,7 @@ static void fc_rport_enter_logo(struct fc_rport_priv *rdata)
kref_get(&rdata->kref);
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_LOGO,
fc_rport_logo_resp, rdata, 0))
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -1534,7 +1529,7 @@ out:
err:
mutex_unlock(&rdata->rp_mutex);
put:
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
/**
@ -1566,7 +1561,7 @@ static void fc_rport_enter_adisc(struct fc_rport_priv *rdata)
fc_rport_adisc_resp, rdata,
2 * lport->r_a_tov)) {
fc_rport_error_retry(rdata, -FC_EX_XMIT_ERR);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
}
}
@ -1711,7 +1706,7 @@ static void fc_rport_recv_els_req(struct fc_lport *lport, struct fc_frame *fp)
"while in state %s\n",
fc_rport_state(rdata));
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
goto busy;
}
default:
@ -1719,7 +1714,7 @@ static void fc_rport_recv_els_req(struct fc_lport *lport, struct fc_frame *fp)
"Reject ELS 0x%02x while in state %s\n",
fc_frame_payload_op(fp), fc_rport_state(rdata));
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, lport->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
goto reject;
}
@ -1753,7 +1748,7 @@ static void fc_rport_recv_els_req(struct fc_lport *lport, struct fc_frame *fp)
}
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
return;
reject:
@ -2158,7 +2153,7 @@ static void fc_rport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp)
fc_rport_enter_delete(rdata, RPORT_EV_STOP);
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
kref_put(&rdata->kref, fc_rport_destroy);
} else
FC_RPORT_ID_DBG(lport, sid,
"Received LOGO from non-logged-in port\n");
@ -2197,9 +2192,6 @@ int fc_rport_init(struct fc_lport *lport)
if (!lport->tt.rport_flush_queue)
lport->tt.rport_flush_queue = fc_rport_flush_queue;
if (!lport->tt.rport_destroy)
lport->tt.rport_destroy = fc_rport_destroy;
return 0;
}
EXPORT_SYMBOL(fc_rport_init);

7
include/scsi/libfc.h
View File

@ -651,12 +651,6 @@ struct libfc_function_template {
*/
struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32);
/*
* Destroy an rport after final kref_put().
* The argument is a pointer to the kref inside the fc_rport_priv.
*/
void (*rport_destroy)(struct kref *);
/*
* Callback routine after the remote port is logged in
*
@ -1035,6 +1029,7 @@ void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *);
*****************************/
int fc_rport_init(struct fc_lport *);
void fc_rport_terminate_io(struct fc_rport *);
void fc_rport_destroy(struct kref *kref);
/*
* DISCOVERY LAYER