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target: Alter core_pr_dump_initiator_port for ease of use
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We use this function exclusively in debug prints. Instead of returning
0 or 1 if isid is present, just set buf to "" if it isn't there. This
saves callers from having to check the return value.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Andy Grover authored and Nicholas Bellinger committed Jun 14, 2013
1 parent 33ce6a8 commit d2843c1
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Showing 3 changed files with 27 additions and 46 deletions.
13 changes: 5 additions & 8 deletions drivers/target/target_core_configfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -983,7 +983,6 @@ static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
struct se_node_acl *se_nacl;
struct t10_pr_registration *pr_reg;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);

Expand All @@ -992,12 +991,11 @@ static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
return sprintf(page, "No SPC-3 Reservation holder\n");

se_nacl = pr_reg->pr_reg_nacl;
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);

return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
se_nacl->initiatorname, i_buf);
}

static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
Expand Down Expand Up @@ -1116,7 +1114,7 @@ static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
unsigned char buf[384];
char i_buf[PR_REG_ISID_ID_LEN];
ssize_t len = 0;
int reg_count = 0, prf_isid;
int reg_count = 0;

len += sprintf(page+len, "SPC-3 PR Registrations:\n");

Expand All @@ -1127,12 +1125,11 @@ static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
memset(buf, 0, 384);
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
core_pr_dump_initiator_port(pr_reg, i_buf,
PR_REG_ISID_ID_LEN);
sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
tfo->get_fabric_name(),
pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ?
&i_buf[0] : "", pr_reg->pr_res_key,
pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key,
pr_reg->pr_res_generation);

if (len + strlen(buf) >= PAGE_SIZE)
Expand Down
58 changes: 21 additions & 37 deletions drivers/target/target_core_pr.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -53,16 +53,15 @@ struct pr_transport_id_holder {
struct list_head dest_list;
};

int core_pr_dump_initiator_port(
void core_pr_dump_initiator_port(
struct t10_pr_registration *pr_reg,
char *buf,
u32 size)
{
if (!pr_reg->isid_present_at_reg)
return 0;
buf[0] = '\0';

snprintf(buf, size, ",i,0x%s", &pr_reg->pr_reg_isid[0]);
return 1;
snprintf(buf, size, ",i,0x%s", pr_reg->pr_reg_isid);
}

enum register_type {
Expand Down Expand Up @@ -859,11 +858,9 @@ static void core_scsi3_aptpl_reserve(
struct t10_pr_registration *pr_reg)
{
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);

spin_lock(&dev->dev_reservation_lock);
dev->dev_pr_res_holder = pr_reg;
Expand All @@ -876,7 +873,7 @@ static void core_scsi3_aptpl_reserve(
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname,
(prf_isid) ? &i_buf[0] : "");
i_buf);
}

static void __core_scsi3_add_registration(struct se_device *, struct se_node_acl *,
Expand Down Expand Up @@ -977,17 +974,15 @@ static void __core_scsi3_dump_registration(
{
struct se_portal_group *se_tpg = nacl->se_tpg;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(&i_buf[0], 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);

pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator"
" Node: %s%s\n", tfo->get_fabric_name(), (register_type == REGISTER_AND_MOVE) ?
"_AND_MOVE" : (register_type == REGISTER_AND_IGNORE_EXISTING_KEY) ?
"_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname,
(prf_isid) ? i_buf : "");
i_buf);
pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n",
tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg),
tfo->tpg_get_tag(se_tpg));
Expand Down Expand Up @@ -1236,11 +1231,9 @@ static void __core_scsi3_free_registration(
pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);

pr_reg->pr_reg_deve->def_pr_registered = 0;
pr_reg->pr_reg_deve->pr_res_key = 0;
Expand Down Expand Up @@ -1268,7 +1261,7 @@ static void __core_scsi3_free_registration(
pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator"
" Node: %s%s\n", tfo->get_fabric_name(),
pr_reg->pr_reg_nacl->initiatorname,
(prf_isid) ? &i_buf[0] : "");
i_buf);
pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target"
" Port(s)\n", tfo->get_fabric_name(),
(pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE",
Expand Down Expand Up @@ -1464,7 +1457,7 @@ core_scsi3_decode_spec_i_port(
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
sense_reason_t ret;
u32 tpdl, tid_len = 0;
int dest_local_nexus, prf_isid;
int dest_local_nexus;
u32 dest_rtpi = 0;

memset(dest_iport, 0, 64);
Expand Down Expand Up @@ -1775,17 +1768,15 @@ core_scsi3_decode_spec_i_port(
kfree(tidh);

memset(i_buf, 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(dest_pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(dest_pr_reg, i_buf, PR_REG_ISID_ID_LEN);

__core_scsi3_add_registration(cmd->se_dev, dest_node_acl,
dest_pr_reg, 0, 0);

pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully"
" registered Transport ID for Node: %s%s Mapped LUN:"
" %u\n", dest_tpg->se_tpg_tfo->get_fabric_name(),
dest_node_acl->initiatorname, (prf_isid) ?
&i_buf[0] : "", dest_se_deve->mapped_lun);
dest_node_acl->initiatorname, i_buf, dest_se_deve->mapped_lun);

if (dest_local_nexus)
continue;
Expand Down Expand Up @@ -2351,7 +2342,6 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
struct t10_reservation *pr_tmpl = &dev->t10_pr;
char i_buf[PR_REG_ISID_ID_LEN];
sense_reason_t ret;
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);

Expand Down Expand Up @@ -2477,8 +2467,7 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
pr_reg->pr_res_type = type;
pr_reg->pr_res_holder = 1;
dev->dev_pr_res_holder = pr_reg;
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);

pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new"
" reservation holder TYPE: %s ALL_TG_PT: %d\n",
Expand All @@ -2487,7 +2476,7 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
cmd->se_tfo->get_fabric_name(),
se_sess->se_node_acl->initiatorname,
(prf_isid) ? &i_buf[0] : "");
i_buf);
spin_unlock(&dev->dev_reservation_lock);

if (pr_tmpl->pr_aptpl_active) {
Expand Down Expand Up @@ -2535,11 +2524,9 @@ static void __core_scsi3_complete_pro_release(
{
struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
/*
* Go ahead and release the current PR reservation holder.
*/
Expand All @@ -2552,7 +2539,7 @@ static void __core_scsi3_complete_pro_release(
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n",
tfo->get_fabric_name(), se_nacl->initiatorname,
(prf_isid) ? &i_buf[0] : "");
i_buf);
/*
* Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE
*/
Expand Down Expand Up @@ -2826,11 +2813,9 @@ static void __core_scsi3_complete_pro_preempt(
struct se_node_acl *nacl = pr_reg->pr_reg_nacl;
struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
char i_buf[PR_REG_ISID_ID_LEN];
int prf_isid;

memset(i_buf, 0, PR_REG_ISID_ID_LEN);
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
/*
* Do an implict RELEASE of the existing reservation.
*/
Expand All @@ -2850,7 +2835,7 @@ static void __core_scsi3_complete_pro_preempt(
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n",
tfo->get_fabric_name(), (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "",
nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
nacl->initiatorname, i_buf);
/*
* For PREEMPT_AND_ABORT, add the preempting reservation's
* struct t10_pr_registration to the list that will be compared
Expand Down Expand Up @@ -3231,7 +3216,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
unsigned char *initiator_str;
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
u32 tid_len, tmp_tid_len;
int new_reg = 0, type, scope, matching_iname, prf_isid;
int new_reg = 0, type, scope, matching_iname;
sense_reason_t ret;
unsigned short rtpi;
unsigned char proto_ident;
Expand Down Expand Up @@ -3575,8 +3560,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
dest_pr_reg->pr_res_holder = 1;
dest_pr_reg->pr_res_type = type;
pr_reg->pr_res_scope = scope;
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
/*
* Increment PRGeneration for existing registrations..
*/
Expand All @@ -3592,7 +3576,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
pr_debug("SPC-3 PR Successfully moved reservation from"
" %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n",
tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname,
(prf_isid) ? &i_buf[0] : "", dest_tf_ops->get_fabric_name(),
i_buf, dest_tf_ops->get_fabric_name(),
dest_node_acl->initiatorname, (iport_ptr != NULL) ?
iport_ptr : "");
/*
Expand Down
2 changes: 1 addition & 1 deletion drivers/target/target_core_pr.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@

extern struct kmem_cache *t10_pr_reg_cache;

extern int core_pr_dump_initiator_port(struct t10_pr_registration *,
extern void core_pr_dump_initiator_port(struct t10_pr_registration *,
char *, u32);
extern sense_reason_t target_scsi2_reservation_release(struct se_cmd *);
extern sense_reason_t target_scsi2_reservation_reserve(struct se_cmd *);
Expand Down

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