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target/iscsi: Misc cleanups from Agrover (round 2) 

This patch includes the handful of squashed patches for target/iscsi from
Andy's original series into lio-core/master code:

*) Make iscsit_add_reject static
*) Remove unused data_offset_end from iscsi_datain_req
*) Remove "#if 0" stubs
*) Rename iscsi_datain_req to cmd_datain_node
*) Cleanups for built_r2ts_for_cmd()
*) Cleanups for Cleanup build_sendtargets_response()

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Andy Grover 2012-04-03 15:51:12 -07:00 committed by Nicholas Bellinger
parent 6f3c0e69a9
commit 8b1e1244db
12 changed files with 87 additions and 109 deletions
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56
drivers/target/iscsi/iscsi_target.c
View File

@ -593,7 +593,7 @@ static void __exit iscsi_target_cleanup_module(void)
kfree(iscsit_global);
}
int iscsit_add_reject(
static int iscsit_add_reject(
u8 reason,
int fail_conn,
unsigned char *buf,
@ -1442,7 +1442,7 @@ static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf)
return 0;
else if (ret == DATAOUT_SEND_R2T) {
iscsit_set_dataout_sequence_values(cmd);
iscsit_build_r2ts_for_cmd(cmd, conn, 0);
iscsit_build_r2ts_for_cmd(cmd, conn, false);
} else if (ret == DATAOUT_SEND_TO_TRANSPORT) {
/*
* Handle extra special case for out of order
@ -2950,15 +2950,13 @@ static int iscsit_send_r2t(
}
/*
* type 0: Normal Operation.
* type 1: Called from Storage Transport.
* type 2: Called from iscsi_task_reassign_complete_write() for
* connection recovery.
* @recovery: If called from iscsi_task_reassign_complete_write() for
* connection recovery.
*/
int iscsit_build_r2ts_for_cmd(
struct iscsi_cmd *cmd,
struct iscsi_conn *conn,
int type)
bool recovery)
{
int first_r2t = 1;
u32 offset = 0, xfer_len = 0;
@ -2969,27 +2967,33 @@ int iscsit_build_r2ts_for_cmd(
return 0;
}
if (conn->sess->sess_ops->DataSequenceInOrder && (type != 2))
if (conn->sess->sess_ops->DataSequenceInOrder &&
!recovery)
cmd->r2t_offset = max(cmd->r2t_offset, cmd->write_data_done);
while (cmd->outstanding_r2ts < conn->sess->sess_ops->MaxOutstandingR2T) {
if (conn->sess->sess_ops->DataSequenceInOrder) {
offset = cmd->r2t_offset;
if (first_r2t && (type == 2)) {
xfer_len = ((offset +
(conn->sess->sess_ops->MaxBurstLength -
cmd->next_burst_len) >
cmd->data_length) ?
(cmd->data_length - offset) :
(conn->sess->sess_ops->MaxBurstLength -
cmd->next_burst_len));
if (first_r2t && recovery) {
int new_data_end = offset +
conn->sess->sess_ops->MaxBurstLength -
cmd->next_burst_len;
if (new_data_end > cmd->data_length)
xfer_len = cmd->data_length - offset;
else
xfer_len =
conn->sess->sess_ops->MaxBurstLength -
cmd->next_burst_len;
} else {
xfer_len = ((offset +
conn->sess->sess_ops->MaxBurstLength) >
cmd->data_length) ?
(cmd->data_length - offset) :
conn->sess->sess_ops->MaxBurstLength;
int new_data_end = offset +
conn->sess->sess_ops->MaxBurstLength;
if (new_data_end > cmd->data_length)
xfer_len = cmd->data_length - offset;
else
xfer_len = conn->sess->sess_ops->MaxBurstLength;
}
cmd->r2t_offset += xfer_len;
@ -3225,6 +3229,8 @@ static bool iscsit_check_inaddr_any(struct iscsi_np *np)
return ret;
}
#define SENDTARGETS_BUF_LIMIT 32768U
static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd)
{
char *payload = NULL;
@ -3233,12 +3239,10 @@ static int iscsit_build_sendtargets_response(struct iscsi_cmd *cmd)
struct iscsi_tiqn *tiqn;
struct iscsi_tpg_np *tpg_np;
int buffer_len, end_of_buf = 0, len = 0, payload_len = 0;
unsigned char buf[256];
unsigned char buf[ISCSI_IQN_LEN+12]; /* iqn + "TargetName=" + \0 */
buffer_len = (conn->conn_ops->MaxRecvDataSegmentLength > 32768) ?
32768 : conn->conn_ops->MaxRecvDataSegmentLength;
memset(buf, 0, 256);
buffer_len = max(conn->conn_ops->MaxRecvDataSegmentLength,
SENDTARGETS_BUF_LIMIT);
payload = kzalloc(buffer_len, GFP_KERNEL);
if (!payload) {

2
drivers/target/iscsi/iscsi_target.h
View File

@ -18,7 +18,7 @@ extern int iscsit_logout_closesession(struct iscsi_cmd *, struct iscsi_conn *);
extern int iscsit_logout_closeconnection(struct iscsi_cmd *, struct iscsi_conn *);
extern int iscsit_logout_removeconnforrecovery(struct iscsi_cmd *, struct iscsi_conn *);
extern int iscsit_send_async_msg(struct iscsi_conn *, u16, u8, u8);
extern int iscsit_build_r2ts_for_cmd(struct iscsi_cmd *, struct iscsi_conn *, int);
extern int iscsit_build_r2ts_for_cmd(struct iscsi_cmd *, struct iscsi_conn *, bool recovery);
extern void iscsit_thread_get_cpumask(struct iscsi_conn *);
extern int iscsi_target_tx_thread(void *);
extern int iscsi_target_rx_thread(void *);

2
drivers/target/iscsi/iscsi_target_configfs.c
View File

@ -1538,7 +1538,7 @@ static int lio_write_pending(struct se_cmd *se_cmd)
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
if (!cmd->immediate_data && !cmd->unsolicited_data)
return iscsit_build_r2ts_for_cmd(cmd, cmd->conn, 1);
return iscsit_build_r2ts_for_cmd(cmd, cmd->conn, false);
return 0;
}

3
drivers/target/iscsi/iscsi_target_core.h
View File

@ -296,12 +296,11 @@ struct iscsi_datain_req {
u32 runlength;
u32 data_length;
u32 data_offset;
u32 data_offset_end;
u32 data_sn;
u32 next_burst_len;
u32 read_data_done;
u32 seq_send_order;
struct list_head dr_list;
struct list_head cmd_datain_node;
} ____cacheline_aligned;
struct iscsi_ooo_cmdsn {

17
drivers/target/iscsi/iscsi_target_datain_values.c
View File

@ -37,7 +37,7 @@ struct iscsi_datain_req *iscsit_allocate_datain_req(void)
" struct iscsi_datain_req\n");
return NULL;
}
INIT_LIST_HEAD(&dr->dr_list);
INIT_LIST_HEAD(&dr->cmd_datain_node);
return dr;
}
@ -45,14 +45,14 @@ struct iscsi_datain_req *iscsit_allocate_datain_req(void)
void iscsit_attach_datain_req(struct iscsi_cmd *cmd, struct iscsi_datain_req *dr)
{
spin_lock(&cmd->datain_lock);
list_add_tail(&dr->dr_list, &cmd->datain_list);
list_add_tail(&dr->cmd_datain_node, &cmd->datain_list);
spin_unlock(&cmd->datain_lock);
}
void iscsit_free_datain_req(struct iscsi_cmd *cmd, struct iscsi_datain_req *dr)
{
spin_lock(&cmd->datain_lock);
list_del(&dr->dr_list);
list_del(&dr->cmd_datain_node);
spin_unlock(&cmd->datain_lock);
kmem_cache_free(lio_dr_cache, dr);
@ -63,8 +63,8 @@ void iscsit_free_all_datain_reqs(struct iscsi_cmd *cmd)
struct iscsi_datain_req *dr, *dr_tmp;
spin_lock(&cmd->datain_lock);
list_for_each_entry_safe(dr, dr_tmp, &cmd->datain_list, dr_list) {
list_del(&dr->dr_list);
list_for_each_entry_safe(dr, dr_tmp, &cmd->datain_list, cmd_datain_node) {
list_del(&dr->cmd_datain_node);
kmem_cache_free(lio_dr_cache, dr);
}
spin_unlock(&cmd->datain_lock);
@ -72,17 +72,14 @@ void iscsit_free_all_datain_reqs(struct iscsi_cmd *cmd)
struct iscsi_datain_req *iscsit_get_datain_req(struct iscsi_cmd *cmd)
{
struct iscsi_datain_req *dr;
if (list_empty(&cmd->datain_list)) {
pr_err("cmd->datain_list is empty for ITT:"
" 0x%08x\n", cmd->init_task_tag);
return NULL;
}
list_for_each_entry(dr, &cmd->datain_list, dr_list)
break;
return dr;
return list_first_entry(&cmd->datain_list, struct iscsi_datain_req,
cmd_datain_node);
}
/*

13
drivers/target/iscsi/iscsi_target_erl1.c
View File

@ -279,11 +279,9 @@ int iscsit_create_recovery_datain_values_datasequenceinorder_no(
* seq->first_datasn and seq->last_datasn have not been set.
*/
if (!seq->sent) {
#if 0
pr_err("Ignoring non-sent sequence 0x%08x ->"
" 0x%08x\n\n", seq->first_datasn,
seq->last_datasn);
#endif
continue;
}
@ -294,11 +292,10 @@ int iscsit_create_recovery_datain_values_datasequenceinorder_no(
*/
if ((seq->first_datasn < begrun) &&
(seq->last_datasn < begrun)) {
#if 0
pr_err("Pre BegRun sequence 0x%08x ->"
" 0x%08x\n", seq->first_datasn,
seq->last_datasn);
#endif
read_data_done += cmd->seq_list[i].xfer_len;
seq->next_burst_len = seq->pdu_send_order = 0;
continue;
@ -309,11 +306,10 @@ int iscsit_create_recovery_datain_values_datasequenceinorder_no(
*/
if ((seq->first_datasn <= begrun) &&
(seq->last_datasn >= begrun)) {
#if 0
pr_err("Found sequence begrun: 0x%08x in"
" 0x%08x -> 0x%08x\n", begrun,
seq->first_datasn, seq->last_datasn);
#endif
seq_send_order = seq->seq_send_order;
data_sn = seq->first_datasn;
seq->next_burst_len = seq->pdu_send_order = 0;
@ -369,10 +365,9 @@ int iscsit_create_recovery_datain_values_datasequenceinorder_no(
*/
if ((seq->first_datasn > begrun) ||
(seq->last_datasn > begrun)) {
#if 0
pr_err("Post BegRun sequence 0x%08x -> 0x%08x\n",
seq->first_datasn, seq->last_datasn);
#endif
seq->next_burst_len = seq->pdu_send_order = 0;
continue;
}
@ -987,7 +982,7 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo)
return 0;
iscsit_set_dataout_sequence_values(cmd);
iscsit_build_r2ts_for_cmd(cmd, cmd->conn, 0);
iscsit_build_r2ts_for_cmd(cmd, cmd->conn, false);
}
return 0;
}

8
drivers/target/iscsi/iscsi_target_parameters.c
View File

@ -803,14 +803,6 @@ static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_pt
value = simple_strtoul(value_ptr, &tmpptr, 0);
/* #warning FIXME: Fix this */
#if 0
if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) {
pr_err("Illegal value \"%s\" for \"%s\".\n",
value, param->name);
return -1;
}
#endif
if (IS_TYPERANGE_0_TO_2(param)) {
if ((value < 0) || (value > 2)) {
pr_err("Illegal value for \"%s\", must be"

25
drivers/target/iscsi/iscsi_target_seq_pdu_list.c
View File

@ -28,7 +28,8 @@
#define OFFLOAD_BUF_SIZE 32768
void iscsit_dump_seq_list(struct iscsi_cmd *cmd)
#ifdef DEBUG
static void iscsit_dump_seq_list(struct iscsi_cmd *cmd)
{
int i;
struct iscsi_seq *seq;
@ -46,7 +47,7 @@ void iscsit_dump_seq_list(struct iscsi_cmd *cmd)
}
}
void iscsit_dump_pdu_list(struct iscsi_cmd *cmd)
static void iscsit_dump_pdu_list(struct iscsi_cmd *cmd)
{
int i;
struct iscsi_pdu *pdu;
@ -61,6 +62,10 @@ void iscsit_dump_pdu_list(struct iscsi_cmd *cmd)
pdu->length, pdu->pdu_send_order, pdu->seq_no);
}
}
#else
static void iscsit_dump_seq_list(struct iscsi_cmd *cmd) {}
static void iscsit_dump_pdu_list(struct iscsi_cmd *cmd) {}
#endif
static void iscsit_ordered_seq_lists(
struct iscsi_cmd *cmd,
@ -464,9 +469,8 @@ static int iscsit_build_pdu_and_seq_list(
} else
iscsit_ordered_seq_lists(cmd, bl->type);
}
#if 0
iscsit_dump_seq_list(cmd);
#endif
}
if (!datapduinorder) {
if (bl->data_direction & ISCSI_PDU_WRITE) {
@ -484,9 +488,8 @@ static int iscsit_build_pdu_and_seq_list(
} else
iscsit_ordered_pdu_lists(cmd, bl->type);
}
#if 0
iscsit_dump_pdu_list(cmd);
#endif
}
return 0;
@ -572,13 +575,12 @@ redo:
pdu = &cmd->pdu_list[cmd->pdu_start];
for (i = 0; pdu[i].seq_no != cmd->seq_no; i++) {
#if 0
pr_debug("pdu[i].seq_no: %d, pdu[i].pdu"
"_send_order: %d, pdu[i].offset: %d,"
" pdu[i].length: %d\n", pdu[i].seq_no,
pdu[i].pdu_send_order, pdu[i].offset,
pdu[i].length);
#endif
if (pdu[i].pdu_send_order == cmd->pdu_send_order) {
cmd->pdu_send_order++;
return &pdu[i];
@ -601,11 +603,11 @@ redo:
pr_err("struct iscsi_seq is NULL!\n");
return NULL;
}
#if 0
pr_debug("seq->pdu_start: %d, seq->pdu_count: %d,"
" seq->seq_no: %d\n", seq->pdu_start, seq->pdu_count,
seq->seq_no);
#endif
pdu = &cmd->pdu_list[seq->pdu_start];
if (seq->pdu_send_order == seq->pdu_count) {
@ -645,12 +647,11 @@ struct iscsi_seq *iscsit_get_seq_holder(
}
for (i = 0; i < cmd->seq_count; i++) {
#if 0
pr_debug("seq_list[i].orig_offset: %d, seq_list[i]."
"xfer_len: %d, seq_list[i].seq_no %u\n",
cmd->seq_list[i].orig_offset, cmd->seq_list[i].xfer_len,
cmd->seq_list[i].seq_no);
#endif
if ((cmd->seq_list[i].orig_offset +
cmd->seq_list[i].xfer_len) >=
(offset + length))

7
drivers/target/iscsi/iscsi_target_tmr.c
View File

@ -78,10 +78,7 @@ int iscsit_tmr_task_warm_reset(
{
struct iscsi_session *sess = conn->sess;
struct iscsi_node_attrib *na = iscsit_tpg_get_node_attrib(sess);
#if 0
struct iscsi_init_task_mgt_cmnd *hdr =
(struct iscsi_init_task_mgt_cmnd *) buf;
#endif
if (!na->tmr_warm_reset) {
pr_err("TMR Opcode TARGET_WARM_RESET authorization"
" failed for Initiator Node: %s\n",
@ -292,7 +289,7 @@ static int iscsit_task_reassign_complete_write(
/*
* iscsit_build_r2ts_for_cmd() can handle the rest from here.
*/
return iscsit_build_r2ts_for_cmd(cmd, conn, 2);
return iscsit_build_r2ts_for_cmd(cmd, conn, true);
}
static int iscsit_task_reassign_complete_read(

11
drivers/target/target_core_file.c
View File

@ -133,15 +133,10 @@ static struct se_device *fd_create_virtdevice(
ret = PTR_ERR(dev_p);
goto fail;
}
#if 0
if (di->no_create_file)
flags = O_RDWR | O_LARGEFILE;
else
flags = O_RDWR | O_CREAT | O_LARGEFILE;
#else
/* O_DIRECT too? */
flags = O_RDWR | O_CREAT | O_LARGEFILE;
#endif
/* flags |= O_DIRECT; */
/*
* If fd_buffered_io=1 has not been set explicitly (the default),
* use O_SYNC to force FILEIO writes to disk.

31
drivers/target/target_core_pr.c
View File

@ -500,11 +500,10 @@ static int core_scsi3_pr_seq_non_holder(
* statement.
*/
if (!ret && !other_cdb) {
#if 0
pr_debug("Allowing explict CDB: 0x%02x for %s"
" reservation holder\n", cdb[0],
core_scsi3_pr_dump_type(pr_reg_type));
#endif
return ret;
}
/*
@ -532,14 +531,14 @@ static int core_scsi3_pr_seq_non_holder(
* as we expect registered non-reservation holding
* nexuses to issue CDBs.
*/
#if 0
if (!registered_nexus) {
pr_debug("Allowing implict CDB: 0x%02x"
" for %s reservation on unregistered"
" nexus\n", cdb[0],
core_scsi3_pr_dump_type(pr_reg_type));
}
#endif
return 0;
}
} else if ((reg_only) || (all_reg)) {
@ -548,11 +547,11 @@ static int core_scsi3_pr_seq_non_holder(
* For PR_*_REG_ONLY and PR_*_ALL_REG reservations,
* allow commands from registered nexuses.
*/
#if 0
pr_debug("Allowing implict CDB: 0x%02x for %s"
" reservation\n", cdb[0],
core_scsi3_pr_dump_type(pr_reg_type));
#endif
return 0;
}
}
@ -1666,12 +1665,12 @@ static int core_scsi3_decode_spec_i_port(
ret = -EINVAL;
goto out;
}
#if 0
pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u"
" tid_len: %d for %s + %s\n",
dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length,
tpdl, tid_len, i_str, iport_ptr);
#endif
if (tid_len > tpdl) {
pr_err("SPC-3 PR SPEC_I_PT: Illegal tid_len:"
" %u for Transport ID: %s\n", tid_len, ptr);
@ -1714,12 +1713,12 @@ static int core_scsi3_decode_spec_i_port(
ret = -EINVAL;
goto out;
}
#if 0
pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s"
" dest_se_deve mapped_lun: %u\n",
dest_tpg->se_tpg_tfo->get_fabric_name(),
dest_node_acl->initiatorname, dest_se_deve->mapped_lun);
#endif
/*
* Skip any TransportIDs that already have a registration for
* this target port.
@ -3473,10 +3472,10 @@ static int core_scsi3_emulate_pro_register_and_move(
buf = transport_kmap_data_sg(cmd);
proto_ident = (buf[24] & 0x0f);
#if 0
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:"
" 0x%02x\n", proto_ident);
#endif
if (proto_ident != dest_tf_ops->get_fabric_proto_ident(dest_se_tpg)) {
pr_err("SPC-3 PR REGISTER_AND_MOVE: Received"
" proto_ident: 0x%02x does not match ident: 0x%02x"
@ -3575,11 +3574,11 @@ after_iport_check:
ret = -EINVAL;
goto out;
}
#if 0
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:"
" %s from TransportID\n", dest_tf_ops->get_fabric_name(),
dest_node_acl->initiatorname);
#endif
/*
* Locate the struct se_dev_entry pointer for the matching RELATIVE TARGET
* PORT IDENTIFIER.
@ -3603,12 +3602,12 @@ after_iport_check:
ret = -EINVAL;
goto out;
}
#if 0
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN"
" ACL for dest_se_deve->mapped_lun: %u\n",
dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname,
dest_se_deve->mapped_lun);
#endif
/*
* A persistent reservation needs to already existing in order to
* successfully complete the REGISTER_AND_MOVE service action..

21
drivers/target/target_core_transport.c
View File

@ -2394,12 +2394,12 @@ static inline u32 transport_get_size(
} else /* bytes */
return sectors;
}
#if 0
pr_debug("Returning block_size: %u, sectors: %u == %u for"
" %s object\n", dev->se_sub_dev->se_dev_attrib.block_size, sectors,
dev->se_sub_dev->se_dev_attrib.block_size * sectors,
dev->transport->name);
#endif
" %s object\n", dev->se_sub_dev->se_dev_attrib.block_size,
sectors, dev->se_sub_dev->se_dev_attrib.block_size * sectors,
dev->transport->name);
return dev->se_sub_dev->se_dev_attrib.block_size * sectors;
}
@ -2617,11 +2617,10 @@ static int transport_generic_cmd_sequencer(
* by the ALUA primary or secondary access state..
*/
if (ret > 0) {
#if 0
pr_debug("[%s]: ALUA TG Port not available,"
" SenseKey: NOT_READY, ASC/ASCQ: 0x04/0x%02x\n",
cmd->se_tfo->get_fabric_name(), alua_ascq);
#endif
transport_set_sense_codes(cmd, 0x04, alua_ascq);
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_CHECK_CONDITION_NOT_READY;
@ -4564,12 +4563,12 @@ int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
if (!send_status ||
(cmd->se_cmd_flags & SCF_SENT_DELAYED_TAS))
return 1;
#if 0
pr_debug("Sending delayed SAM_STAT_TASK_ABORTED"
" status for CDB: 0x%02x ITT: 0x%08x\n",
cmd->t_task_cdb[0],
cmd->se_tfo->get_task_tag(cmd));
#endif
cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS;
cmd->se_tfo->queue_status(cmd);
ret = 1;
@ -4602,11 +4601,11 @@ void transport_send_task_abort(struct se_cmd *cmd)
}
}
cmd->scsi_status = SAM_STAT_TASK_ABORTED;
#if 0
pr_debug("Setting SAM_STAT_TASK_ABORTED status for CDB: 0x%02x,"
" ITT: 0x%08x\n", cmd->t_task_cdb[0],
cmd->se_tfo->get_task_tag(cmd));
#endif
cmd->se_tfo->queue_status(cmd);
}