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iscsit: use the itt_t abstract type

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Use the special itt_t type defined by the iscsi headers and the initiator
to make sure it's an opaque value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
tirimbino
Christoph Hellwig 13 years ago committed by Nicholas Bellinger
parent cea0b4ceec
commit 66c7db6876
10 changed files with 37 additions and 46 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 36
      drivers/target/iscsi/iscsi_target.c
  2. 3
      drivers/target/iscsi/iscsi_target_configfs.c
  3. 8
      drivers/target/iscsi/iscsi_target_core.h
  4. 4
      drivers/target/iscsi/iscsi_target_erl1.c
  5. 4
      drivers/target/iscsi/iscsi_target_erl1.h
  6. 2
      drivers/target/iscsi/iscsi_target_login.c
  7. 6
      drivers/target/iscsi/iscsi_target_nego.c
  8. 4
      drivers/target/iscsi/iscsi_target_tmr.c
  9. 10
      drivers/target/iscsi/iscsi_target_util.c
  10. 6
      drivers/target/iscsi/iscsi_target_util.h

36
drivers/target/iscsi/iscsi_target.c
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@ -785,7 +785,6 @@ static int iscsit_handle_scsi_cmd(
hdr = (struct iscsi_scsi_req *) buf;
payload_length = ntoh24(hdr->dlength);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->data_length = be32_to_cpu(hdr->data_length);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
@ -1194,7 +1193,6 @@ static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf)
hdr = (struct iscsi_data *) buf;
payload_length = ntoh24(hdr->dlength);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
hdr->datasn = be32_to_cpu(hdr->datasn);
@ -1425,12 +1423,11 @@ static int iscsit_handle_nop_out(
hdr = (struct iscsi_nopout *) buf;
payload_length = ntoh24(hdr->dlength);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
if ((hdr->itt == 0xFFFFFFFF) && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
if (hdr->itt == RESERVED_ITT && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
pr_err("NOPOUT ITT is reserved, but Immediate Bit is"
" not set, protocol error.\n");
return iscsit_add_reject(ISCSI_REASON_PROTOCOL_ERROR, 1,
@ -1448,7 +1445,7 @@ static int iscsit_handle_nop_out(
pr_debug("Got NOPOUT Ping %s ITT: 0x%08x, TTT: 0x%09x,"
" CmdSN: 0x%08x, ExpStatSN: 0x%08x, Length: %u\n",
(hdr->itt == 0xFFFFFFFF) ? "Response" : "Request",
hdr->itt == RESERVED_ITT ? "Response" : "Request",
hdr->itt, hdr->ttt, hdr->cmdsn, hdr->exp_statsn,
payload_length);
/*
@ -1556,7 +1553,7 @@ static int iscsit_handle_nop_out(
pr_debug("Ping Data: \"%s\"\n", ping_data);
}
if (hdr->itt != 0xFFFFFFFF) {
if (hdr->itt != RESERVED_ITT) {
if (!cmd) {
pr_err("Checking CmdSN for NOPOUT,"
" but cmd is NULL!\n");
@ -1639,8 +1636,6 @@ static int iscsit_handle_task_mgt_cmd(
u8 function;
hdr = (struct iscsi_tm *) buf;
hdr->itt = be32_to_cpu(hdr->itt);
hdr->rtt = be32_to_cpu(hdr->rtt);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
hdr->refcmdsn = be32_to_cpu(hdr->refcmdsn);
@ -1655,9 +1650,9 @@ static int iscsit_handle_task_mgt_cmd(
if ((function != ISCSI_TM_FUNC_ABORT_TASK) &&
((function != ISCSI_TM_FUNC_TASK_REASSIGN) &&
(hdr->rtt != ISCSI_RESERVED_TAG))) {
hdr->rtt != RESERVED_ITT)) {
pr_err("RefTaskTag should be set to 0xFFFFFFFF.\n");
hdr->rtt = ISCSI_RESERVED_TAG;
hdr->rtt = RESERVED_ITT;
}
if ((function == ISCSI_TM_FUNC_TASK_REASSIGN) &&
@ -1869,7 +1864,6 @@ static int iscsit_handle_text_cmd(
hdr = (struct iscsi_text *) buf;
payload_length = ntoh24(hdr->dlength);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
@ -2131,7 +2125,6 @@ static int iscsit_handle_logout_cmd(
hdr = (struct iscsi_logout *) buf;
reason_code = (hdr->flags & 0x7f);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->cid = be16_to_cpu(hdr->cid);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
@ -2219,7 +2212,6 @@ static int iscsit_handle_snack(
hdr = (struct iscsi_snack *) buf;
hdr->flags &= ~ISCSI_FLAG_CMD_FINAL;
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
hdr->begrun = be32_to_cpu(hdr->begrun);
@ -2414,7 +2406,7 @@ static int iscsit_send_conn_drop_async_message(
hdr = (struct iscsi_async *) cmd->pdu;
hdr->opcode = ISCSI_OP_ASYNC_EVENT;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
cmd->init_task_tag = 0xFFFFFFFF;
cmd->init_task_tag = RESERVED_ITT;
cmd->targ_xfer_tag = 0xFFFFFFFF;
put_unaligned_be64(0xFFFFFFFFFFFFFFFFULL, &hdr->rsvd4[0]);
cmd->stat_sn = conn->stat_sn++;
@ -2536,7 +2528,7 @@ static int iscsit_send_data_in(
else
put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun);
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
hdr->ttt = (hdr->flags & ISCSI_FLAG_DATA_ACK) ?
cpu_to_be32(cmd->targ_xfer_tag) :
0xFFFFFFFF;
@ -2708,7 +2700,7 @@ static int iscsit_send_logout_response(
hdr->opcode = ISCSI_OP_LOGOUT_RSP;
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
hdr->response = cmd->logout_response;
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
cmd->stat_sn = conn->stat_sn++;
hdr->statsn = cpu_to_be32(cmd->stat_sn);
@ -2759,7 +2751,7 @@ static int iscsit_send_unsolicited_nopin(
memset(hdr, 0, ISCSI_HDR_LEN);
hdr->opcode = ISCSI_OP_NOOP_IN;
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag);
cmd->stat_sn = conn->stat_sn;
hdr->statsn = cpu_to_be32(cmd->stat_sn);
@ -2816,7 +2808,7 @@ static int iscsit_send_nopin_response(
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
hton24(hdr->dlength, cmd->buf_ptr_size);
put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun);
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag);
cmd->stat_sn = conn->stat_sn++;
hdr->statsn = cpu_to_be32(cmd->stat_sn);
@ -2906,7 +2898,7 @@ static int iscsit_send_r2t(
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
int_to_scsilun(cmd->se_cmd.orig_fe_lun,
(struct scsi_lun *)&hdr->lun);
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
spin_lock_bh(&conn->sess->ttt_lock);
r2t->targ_xfer_tag = conn->sess->targ_xfer_tag++;
if (r2t->targ_xfer_tag == 0xFFFFFFFF)
@ -3074,7 +3066,7 @@ static int iscsit_send_status(
}
hdr->response = cmd->iscsi_response;
hdr->cmd_status = cmd->se_cmd.scsi_status;
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
hdr->statsn = cpu_to_be32(cmd->stat_sn);
iscsit_increment_maxcmdsn(cmd, conn->sess);
@ -3187,7 +3179,7 @@ static int iscsit_send_task_mgt_rsp(
hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
hdr->flags = ISCSI_FLAG_CMD_FINAL;
hdr->response = iscsit_convert_tcm_tmr_rsp(se_tmr);
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
cmd->stat_sn = conn->stat_sn++;
hdr->statsn = cpu_to_be32(cmd->stat_sn);
@ -3360,7 +3352,7 @@ static int iscsit_send_text_rsp(
hdr->opcode = ISCSI_OP_TEXT_RSP;
hdr->flags |= ISCSI_FLAG_CMD_FINAL;
hton24(hdr->dlength, text_length);
hdr->itt = cpu_to_be32(cmd->init_task_tag);
hdr->itt = cmd->init_task_tag;
hdr->ttt = cpu_to_be32(cmd->targ_xfer_tag);
cmd->stat_sn = conn->stat_sn++;
hdr->statsn = cpu_to_be32(cmd->stat_sn);

3
drivers/target/iscsi/iscsi_target_configfs.c
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@ -1475,7 +1475,8 @@ static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
return cmd->init_task_tag;
/* only used for printks or comparism with ->ref_task_tag */
return (__force u32)cmd->init_task_tag;
}
static int iscsi_get_cmd_state(struct se_cmd *se_cmd)

8
drivers/target/iscsi/iscsi_target_core.h
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@ -361,7 +361,7 @@ struct iscsi_cmd {
/* Command flags */
enum cmd_flags_table cmd_flags;
/* Initiator Task Tag assigned from Initiator */
u32 init_task_tag;
itt_t init_task_tag;
/* Target Transfer Tag assigned from Target */
u32 targ_xfer_tag;
/* CmdSN assigned from Initiator */
@ -506,7 +506,7 @@ struct iscsi_conn {
u32 auth_id;
u32 conn_flags;
/* Used for iscsi_tx_login_rsp() */
u32 login_itt;
itt_t login_itt;
u32 exp_statsn;
/* Per connection status sequence number */
u32 stat_sn;
@ -599,7 +599,7 @@ struct iscsi_session {
/* state session is currently in */
u32 session_state;
/* session wide counter: initiator assigned task tag */
u32 init_task_tag;
itt_t init_task_tag;
/* session wide counter: target assigned task tag */
u32 targ_xfer_tag;
u32 cmdsn_window;
@ -665,7 +665,7 @@ struct iscsi_login {
u8 version_max;
char isid[6];
u32 cmd_sn;
u32 init_task_tag;
itt_t init_task_tag;
u32 initial_exp_statsn;
u32 rsp_length;
u16 cid;

4
drivers/target/iscsi/iscsi_target_erl1.c
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@ -466,7 +466,7 @@ static int iscsit_handle_recovery_datain(
int iscsit_handle_recovery_datain_or_r2t(
struct iscsi_conn *conn,
unsigned char *buf,
u32 init_task_tag,
itt_t init_task_tag,
u32 targ_xfer_tag,
u32 begrun,
u32 runlength)
@ -498,7 +498,7 @@ int iscsit_handle_recovery_datain_or_r2t(
/* #warning FIXME: Status SNACK needs to be dependent on OPCODE!!! */
int iscsit_handle_status_snack(
struct iscsi_conn *conn,
u32 init_task_tag,
itt_t init_task_tag,
u32 targ_xfer_tag,
u32 begrun,
u32 runlength)

4
drivers/target/iscsi/iscsi_target_erl1.h
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@ -7,8 +7,8 @@ extern int iscsit_create_recovery_datain_values_datasequenceinorder_yes(
extern int iscsit_create_recovery_datain_values_datasequenceinorder_no(
struct iscsi_cmd *, struct iscsi_datain_req *);
extern int iscsit_handle_recovery_datain_or_r2t(struct iscsi_conn *, unsigned char *,
u32, u32, u32, u32);
extern int iscsit_handle_status_snack(struct iscsi_conn *, u32, u32,
itt_t, u32, u32, u32);
extern int iscsit_handle_status_snack(struct iscsi_conn *, itt_t, u32,
u32, u32);
extern int iscsit_handle_data_ack(struct iscsi_conn *, u32, u32, u32);
extern int iscsit_dataout_datapduinorder_no_fbit(struct iscsi_cmd *, struct iscsi_pdu *);

2
drivers/target/iscsi/iscsi_target_login.c
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@ -953,9 +953,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
pdu = (struct iscsi_login_req *) buffer;
pdu->cid = be16_to_cpu(pdu->cid);
pdu->tsih = be16_to_cpu(pdu->tsih);
pdu->itt = be32_to_cpu(pdu->itt);
pdu->cmdsn = be32_to_cpu(pdu->cmdsn);
pdu->exp_statsn = be32_to_cpu(pdu->exp_statsn);
/*
* Used by iscsit_tx_login_rsp() for Login Resonses PDUs
* when Status-Class != 0.

6
drivers/target/iscsi/iscsi_target_nego.c
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@ -339,14 +339,14 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
hton24(login_rsp->dlength, login->rsp_length);
memcpy(login_rsp->isid, login->isid, 6);
login_rsp->tsih = cpu_to_be16(login->tsih);
login_rsp->itt = cpu_to_be32(login->init_task_tag);
login_rsp->itt = login->init_task_tag;
login_rsp->statsn = cpu_to_be32(conn->stat_sn++);
login_rsp->exp_cmdsn = cpu_to_be32(conn->sess->exp_cmd_sn);
login_rsp->max_cmdsn = cpu_to_be32(conn->sess->max_cmd_sn);
pr_debug("Sending Login Response, Flags: 0x%02x, ITT: 0x%08x,"
" ExpCmdSN; 0x%08x, MaxCmdSN: 0x%08x, StatSN: 0x%08x, Length:"
" %u\n", login_rsp->flags, ntohl(login_rsp->itt),
" %u\n", login_rsp->flags, (__force u32)login_rsp->itt,
ntohl(login_rsp->exp_cmdsn), ntohl(login_rsp->max_cmdsn),
ntohl(login_rsp->statsn), login->rsp_length);
@ -361,7 +361,6 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
login->rsp_length = 0;
login_rsp->tsih = be16_to_cpu(login_rsp->tsih);
login_rsp->itt = be32_to_cpu(login_rsp->itt);
login_rsp->statsn = be32_to_cpu(login_rsp->statsn);
mutex_lock(&sess->cmdsn_mutex);
login_rsp->exp_cmdsn = be32_to_cpu(sess->exp_cmd_sn);
@ -382,7 +381,6 @@ static int iscsi_target_do_rx_login_io(struct iscsi_conn *conn, struct iscsi_log
login_req = (struct iscsi_login_req *) login->req;
payload_length = ntoh24(login_req->dlength);
login_req->tsih = be16_to_cpu(login_req->tsih);
login_req->itt = be32_to_cpu(login_req->itt);
login_req->cid = be16_to_cpu(login_req->cid);
login_req->cmdsn = be32_to_cpu(login_req->cmdsn);
login_req->exp_statsn = be32_to_cpu(login_req->exp_statsn);

4
drivers/target/iscsi/iscsi_target_tmr.c
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@ -61,7 +61,7 @@ u8 iscsit_tmr_abort_task(
return ISCSI_TMF_RSP_REJECTED;
}
se_tmr->ref_task_tag = hdr->rtt;
se_tmr->ref_task_tag = (__force u32)hdr->rtt;
tmr_req->ref_cmd = ref_cmd;
tmr_req->ref_cmd_sn = hdr->refcmdsn;
tmr_req->exp_data_sn = hdr->exp_datasn;
@ -171,7 +171,7 @@ u8 iscsit_tmr_task_reassign(
return ISCSI_TMF_RSP_REJECTED;
}
se_tmr->ref_task_tag = hdr->rtt;
se_tmr->ref_task_tag = (__force u32)hdr->rtt;
tmr_req->ref_cmd = ref_cmd;
tmr_req->ref_cmd_sn = hdr->refcmdsn;
tmr_req->exp_data_sn = hdr->exp_datasn;

10
drivers/target/iscsi/iscsi_target_util.c
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@ -351,7 +351,7 @@ int iscsit_check_unsolicited_dataout(struct iscsi_cmd *cmd, unsigned char *buf)
struct iscsi_cmd *iscsit_find_cmd_from_itt(
struct iscsi_conn *conn,
u32 init_task_tag)
itt_t init_task_tag)
{
struct iscsi_cmd *cmd;
@ -371,7 +371,7 @@ struct iscsi_cmd *iscsit_find_cmd_from_itt(
struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(
struct iscsi_conn *conn,
u32 init_task_tag,
itt_t init_task_tag,
u32 length)
{
struct iscsi_cmd *cmd;
@ -417,7 +417,7 @@ int iscsit_find_cmd_for_recovery(
struct iscsi_session *sess,
struct iscsi_cmd **cmd_ptr,
struct iscsi_conn_recovery **cr_ptr,
u32 init_task_tag)
itt_t init_task_tag)
{
struct iscsi_cmd *cmd = NULL;
struct iscsi_conn_recovery *cr;
@ -855,7 +855,7 @@ static int iscsit_add_nopin(struct iscsi_conn *conn, int want_response)
cmd->iscsi_opcode = ISCSI_OP_NOOP_IN;
state = (want_response) ? ISTATE_SEND_NOPIN_WANT_RESPONSE :
ISTATE_SEND_NOPIN_NO_RESPONSE;
cmd->init_task_tag = 0xFFFFFFFF;
cmd->init_task_tag = RESERVED_ITT;
spin_lock_bh(&conn->sess->ttt_lock);
cmd->targ_xfer_tag = (want_response) ? conn->sess->targ_xfer_tag++ :
0xFFFFFFFF;
@ -1222,7 +1222,7 @@ int iscsit_tx_login_rsp(struct iscsi_conn *conn, u8 status_class, u8 status_deta
hdr->opcode = ISCSI_OP_LOGIN_RSP;
hdr->status_class = status_class;
hdr->status_detail = status_detail;
hdr->itt = cpu_to_be32(conn->login_itt);
hdr->itt = conn->login_itt;
iov.iov_base = &iscsi_hdr;
iov.iov_len = ISCSI_HDR_LEN;

6
drivers/target/iscsi/iscsi_target_util.h
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@ -14,12 +14,12 @@ extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);
int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, u32 cmdsn);
extern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *);
extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, u32);
extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t);
extern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *,
u32, u32);
itt_t, u32);
extern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32);
extern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **,
struct iscsi_conn_recovery **, u32);
struct iscsi_conn_recovery **, itt_t);
extern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);
extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *);
extern void iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);

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