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path: root/drivers/target/iscsi/iscsi_target_erl0.c
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Diffstat (limited to 'drivers/target/iscsi/iscsi_target_erl0.c')
-rw-r--r--drivers/target/iscsi/iscsi_target_erl0.c128
1 files changed, 67 insertions, 61 deletions
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index 1a02016ecda..0d1e6ee3e99 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -2,9 +2,7 @@
* This file contains error recovery level zero functions used by
* the iSCSI Target driver.
*
- * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
- *
- * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ * (c) Copyright 2007-2013 Datera, Inc.
*
* Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
*
@@ -48,9 +46,9 @@ void iscsit_set_dataout_sequence_values(
if (cmd->unsolicited_data) {
cmd->seq_start_offset = cmd->write_data_done;
cmd->seq_end_offset = (cmd->write_data_done +
- (cmd->se_cmd.data_length >
- conn->sess->sess_ops->FirstBurstLength) ?
- conn->sess->sess_ops->FirstBurstLength : cmd->se_cmd.data_length);
+ ((cmd->se_cmd.data_length >
+ conn->sess->sess_ops->FirstBurstLength) ?
+ conn->sess->sess_ops->FirstBurstLength : cmd->se_cmd.data_length));
return;
}
@@ -95,14 +93,15 @@ static int iscsit_dataout_within_command_recovery_check(
*/
if (conn->sess->sess_ops->DataSequenceInOrder) {
if ((cmd->cmd_flags & ICF_WITHIN_COMMAND_RECOVERY) &&
- (cmd->write_data_done != hdr->offset))
+ cmd->write_data_done != be32_to_cpu(hdr->offset))
goto dump;
cmd->cmd_flags &= ~ICF_WITHIN_COMMAND_RECOVERY;
} else {
struct iscsi_seq *seq;
- seq = iscsit_get_seq_holder(cmd, hdr->offset, payload_length);
+ seq = iscsit_get_seq_holder(cmd, be32_to_cpu(hdr->offset),
+ payload_length);
if (!seq)
return DATAOUT_CANNOT_RECOVER;
/*
@@ -111,15 +110,15 @@ static int iscsit_dataout_within_command_recovery_check(
cmd->seq_ptr = seq;
if (conn->sess->sess_ops->DataPDUInOrder) {
- if ((seq->status ==
- DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY) &&
- ((seq->offset != hdr->offset) ||
- (seq->data_sn != hdr->datasn)))
+ if (seq->status ==
+ DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY &&
+ (seq->offset != be32_to_cpu(hdr->offset) ||
+ seq->data_sn != be32_to_cpu(hdr->datasn)))
goto dump;
} else {
- if ((seq->status ==
- DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY) &&
- (seq->data_sn != hdr->datasn))
+ if (seq->status ==
+ DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY &&
+ seq->data_sn != be32_to_cpu(hdr->datasn))
goto dump;
}
@@ -148,12 +147,12 @@ static int iscsit_dataout_check_unsolicited_sequence(
u32 payload_length = ntoh24(hdr->dlength);
- if ((hdr->offset < cmd->seq_start_offset) ||
- ((hdr->offset + payload_length) > cmd->seq_end_offset)) {
+ if ((be32_to_cpu(hdr->offset) < cmd->seq_start_offset) ||
+ ((be32_to_cpu(hdr->offset) + payload_length) > cmd->seq_end_offset)) {
pr_err("Command ITT: 0x%08x with Offset: %u,"
" Length: %u outside of Unsolicited Sequence %u:%u while"
" DataSequenceInOrder=Yes.\n", cmd->init_task_tag,
- hdr->offset, payload_length, cmd->seq_start_offset,
+ be32_to_cpu(hdr->offset), payload_length, cmd->seq_start_offset,
cmd->seq_end_offset);
return DATAOUT_CANNOT_RECOVER;
}
@@ -236,12 +235,12 @@ static int iscsit_dataout_check_sequence(
* fullfilling an Recovery R2T, it's best to just dump the
* payload here, instead of erroring out.
*/
- if ((hdr->offset < cmd->seq_start_offset) ||
- ((hdr->offset + payload_length) > cmd->seq_end_offset)) {
+ if ((be32_to_cpu(hdr->offset) < cmd->seq_start_offset) ||
+ ((be32_to_cpu(hdr->offset) + payload_length) > cmd->seq_end_offset)) {
pr_err("Command ITT: 0x%08x with Offset: %u,"
" Length: %u outside of Sequence %u:%u while"
" DataSequenceInOrder=Yes.\n", cmd->init_task_tag,
- hdr->offset, payload_length, cmd->seq_start_offset,
+ be32_to_cpu(hdr->offset), payload_length, cmd->seq_start_offset,
cmd->seq_end_offset);
if (iscsit_dump_data_payload(conn, payload_length, 1) < 0)
@@ -251,7 +250,8 @@ static int iscsit_dataout_check_sequence(
next_burst_len = (cmd->next_burst_len + payload_length);
} else {
- seq = iscsit_get_seq_holder(cmd, hdr->offset, payload_length);
+ seq = iscsit_get_seq_holder(cmd, be32_to_cpu(hdr->offset),
+ payload_length);
if (!seq)
return DATAOUT_CANNOT_RECOVER;
/*
@@ -366,16 +366,16 @@ static int iscsit_dataout_check_datasn(
data_sn = seq->data_sn;
}
- if (hdr->datasn > data_sn) {
+ if (be32_to_cpu(hdr->datasn) > data_sn) {
pr_err("Command ITT: 0x%08x, received DataSN: 0x%08x"
" higher than expected 0x%08x.\n", cmd->init_task_tag,
- hdr->datasn, data_sn);
+ be32_to_cpu(hdr->datasn), data_sn);
recovery = 1;
goto recover;
- } else if (hdr->datasn < data_sn) {
+ } else if (be32_to_cpu(hdr->datasn) < data_sn) {
pr_err("Command ITT: 0x%08x, received DataSN: 0x%08x"
" lower than expected 0x%08x, discarding payload.\n",
- cmd->init_task_tag, hdr->datasn, data_sn);
+ cmd->init_task_tag, be32_to_cpu(hdr->datasn), data_sn);
dump = 1;
goto dump;
}
@@ -408,33 +408,34 @@ static int iscsit_dataout_pre_datapduinorder_yes(
/*
* For DataSequenceInOrder=Yes: If the offset is greater than the global
* DataPDUInOrder=Yes offset counter in struct iscsi_cmd a protcol error has
- * occured and fail the connection.
+ * occurred and fail the connection.
*
* For DataSequenceInOrder=No: If the offset is greater than the per
* sequence DataPDUInOrder=Yes offset counter in struct iscsi_seq a protocol
- * error has occured and fail the connection.
+ * error has occurred and fail the connection.
*/
if (conn->sess->sess_ops->DataSequenceInOrder) {
- if (hdr->offset != cmd->write_data_done) {
+ if (be32_to_cpu(hdr->offset) != cmd->write_data_done) {
pr_err("Command ITT: 0x%08x, received offset"
" %u different than expected %u.\n", cmd->init_task_tag,
- hdr->offset, cmd->write_data_done);
+ be32_to_cpu(hdr->offset), cmd->write_data_done);
recovery = 1;
goto recover;
}
} else {
struct iscsi_seq *seq = cmd->seq_ptr;
- if (hdr->offset > seq->offset) {
+ if (be32_to_cpu(hdr->offset) > seq->offset) {
pr_err("Command ITT: 0x%08x, received offset"
" %u greater than expected %u.\n", cmd->init_task_tag,
- hdr->offset, seq->offset);
+ be32_to_cpu(hdr->offset), seq->offset);
recovery = 1;
goto recover;
- } else if (hdr->offset < seq->offset) {
+ } else if (be32_to_cpu(hdr->offset) < seq->offset) {
pr_err("Command ITT: 0x%08x, received offset"
" %u less than expected %u, discarding payload.\n",
- cmd->init_task_tag, hdr->offset, seq->offset);
+ cmd->init_task_tag, be32_to_cpu(hdr->offset),
+ seq->offset);
dump = 1;
goto dump;
}
@@ -453,7 +454,7 @@ dump:
return DATAOUT_CANNOT_RECOVER;
return (recovery) ? iscsit_recover_dataout_sequence(cmd,
- hdr->offset, payload_length) :
+ be32_to_cpu(hdr->offset), payload_length) :
(dump) ? DATAOUT_WITHIN_COMMAND_RECOVERY : DATAOUT_NORMAL;
}
@@ -465,7 +466,8 @@ static int iscsit_dataout_pre_datapduinorder_no(
struct iscsi_data *hdr = (struct iscsi_data *) buf;
u32 payload_length = ntoh24(hdr->dlength);
- pdu = iscsit_get_pdu_holder(cmd, hdr->offset, payload_length);
+ pdu = iscsit_get_pdu_holder(cmd, be32_to_cpu(hdr->offset),
+ payload_length);
if (!pdu)
return DATAOUT_CANNOT_RECOVER;
@@ -479,7 +481,7 @@ static int iscsit_dataout_pre_datapduinorder_no(
case ISCSI_PDU_RECEIVED_OK:
pr_err("Command ITT: 0x%08x received already gotten"
" Offset: %u, Length: %u\n", cmd->init_task_tag,
- hdr->offset, payload_length);
+ be32_to_cpu(hdr->offset), payload_length);
return iscsit_dump_data_payload(cmd->conn, payload_length, 1);
default:
return DATAOUT_CANNOT_RECOVER;
@@ -553,7 +555,7 @@ static int iscsit_dataout_post_crc_passed(
if (cmd->unsolicited_data) {
if ((cmd->first_burst_len + payload_length) ==
conn->sess->sess_ops->FirstBurstLength) {
- if (iscsit_dataout_update_r2t(cmd, hdr->offset,
+ if (iscsit_dataout_update_r2t(cmd, be32_to_cpu(hdr->offset),
payload_length) < 0)
return DATAOUT_CANNOT_RECOVER;
send_r2t = 1;
@@ -561,7 +563,8 @@ static int iscsit_dataout_post_crc_passed(
if (!conn->sess->sess_ops->DataPDUInOrder) {
ret = iscsit_dataout_update_datapduinorder_no(cmd,
- hdr->datasn, (hdr->flags & ISCSI_FLAG_CMD_FINAL));
+ be32_to_cpu(hdr->datasn),
+ (hdr->flags & ISCSI_FLAG_CMD_FINAL));
if (ret == DATAOUT_CANNOT_RECOVER)
return ret;
}
@@ -586,7 +589,8 @@ static int iscsit_dataout_post_crc_passed(
if (conn->sess->sess_ops->DataSequenceInOrder) {
if ((cmd->next_burst_len + payload_length) ==
conn->sess->sess_ops->MaxBurstLength) {
- if (iscsit_dataout_update_r2t(cmd, hdr->offset,
+ if (iscsit_dataout_update_r2t(cmd,
+ be32_to_cpu(hdr->offset),
payload_length) < 0)
return DATAOUT_CANNOT_RECOVER;
send_r2t = 1;
@@ -594,7 +598,7 @@ static int iscsit_dataout_post_crc_passed(
if (!conn->sess->sess_ops->DataPDUInOrder) {
ret = iscsit_dataout_update_datapduinorder_no(
- cmd, hdr->datasn,
+ cmd, be32_to_cpu(hdr->datasn),
(hdr->flags & ISCSI_FLAG_CMD_FINAL));
if (ret == DATAOUT_CANNOT_RECOVER)
return ret;
@@ -610,7 +614,8 @@ static int iscsit_dataout_post_crc_passed(
if ((seq->next_burst_len + payload_length) ==
seq->xfer_len) {
- if (iscsit_dataout_update_r2t(cmd, hdr->offset,
+ if (iscsit_dataout_update_r2t(cmd,
+ be32_to_cpu(hdr->offset),
payload_length) < 0)
return DATAOUT_CANNOT_RECOVER;
send_r2t = 1;
@@ -618,7 +623,7 @@ static int iscsit_dataout_post_crc_passed(
if (!conn->sess->sess_ops->DataPDUInOrder) {
ret = iscsit_dataout_update_datapduinorder_no(
- cmd, hdr->datasn,
+ cmd, be32_to_cpu(hdr->datasn),
(hdr->flags & ISCSI_FLAG_CMD_FINAL));
if (ret == DATAOUT_CANNOT_RECOVER)
return ret;
@@ -678,14 +683,15 @@ static int iscsit_dataout_post_crc_failed(
}
recover:
- return iscsit_recover_dataout_sequence(cmd, hdr->offset, payload_length);
+ return iscsit_recover_dataout_sequence(cmd, be32_to_cpu(hdr->offset),
+ payload_length);
}
/*
* Called from iscsit_handle_data_out() before DataOUT Payload is received
* and CRC computed.
*/
-extern int iscsit_check_pre_dataout(
+int iscsit_check_pre_dataout(
struct iscsi_cmd *cmd,
unsigned char *buf)
{
@@ -738,13 +744,12 @@ int iscsit_check_post_dataout(
if (!conn->sess->sess_ops->ErrorRecoveryLevel) {
pr_err("Unable to recover from DataOUT CRC"
" failure while ERL=0, closing session.\n");
- iscsit_add_reject_from_cmd(ISCSI_REASON_DATA_DIGEST_ERROR,
- 1, 0, buf, cmd);
+ iscsit_reject_cmd(cmd, ISCSI_REASON_DATA_DIGEST_ERROR,
+ buf);
return DATAOUT_CANNOT_RECOVER;
}
- iscsit_add_reject_from_cmd(ISCSI_REASON_DATA_DIGEST_ERROR,
- 0, 0, buf, cmd);
+ iscsit_reject_cmd(cmd, ISCSI_REASON_DATA_DIGEST_ERROR, buf);
return iscsit_dataout_post_crc_failed(cmd, buf);
}
}
@@ -752,7 +757,7 @@ int iscsit_check_post_dataout(
static void iscsit_handle_time2retain_timeout(unsigned long data)
{
struct iscsi_session *sess = (struct iscsi_session *) data;
- struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+ struct iscsi_portal_group *tpg = sess->tpg;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
spin_lock_bh(&se_tpg->session_lock);
@@ -780,7 +785,7 @@ static void iscsit_handle_time2retain_timeout(unsigned long data)
tiqn->sess_err_stats.last_sess_failure_type =
ISCSI_SESS_ERR_CXN_TIMEOUT;
tiqn->sess_err_stats.cxn_timeout_errors++;
- sess->conn_timeout_errors++;
+ atomic_long_inc(&sess->conn_timeout_errors);
spin_unlock(&tiqn->sess_err_stats.lock);
}
}
@@ -789,16 +794,16 @@ static void iscsit_handle_time2retain_timeout(unsigned long data)
target_put_session(sess->se_sess);
}
-extern void iscsit_start_time2retain_handler(struct iscsi_session *sess)
+void iscsit_start_time2retain_handler(struct iscsi_session *sess)
{
int tpg_active;
/*
- * Only start Time2Retain timer when the assoicated TPG is still in
+ * Only start Time2Retain timer when the associated TPG is still in
* an ACTIVE (eg: not disabled or shutdown) state.
*/
- spin_lock(&ISCSI_TPG_S(sess)->tpg_state_lock);
- tpg_active = (ISCSI_TPG_S(sess)->tpg_state == TPG_STATE_ACTIVE);
- spin_unlock(&ISCSI_TPG_S(sess)->tpg_state_lock);
+ spin_lock(&sess->tpg->tpg_state_lock);
+ tpg_active = (sess->tpg->tpg_state == TPG_STATE_ACTIVE);
+ spin_unlock(&sess->tpg->tpg_state_lock);
if (!tpg_active)
return;
@@ -822,9 +827,9 @@ extern void iscsit_start_time2retain_handler(struct iscsi_session *sess)
/*
* Called with spin_lock_bh(&struct se_portal_group->session_lock) held
*/
-extern int iscsit_stop_time2retain_timer(struct iscsi_session *sess)
+int iscsit_stop_time2retain_timer(struct iscsi_session *sess)
{
- struct iscsi_portal_group *tpg = ISCSI_TPG_S(sess);
+ struct iscsi_portal_group *tpg = sess->tpg;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
if (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)
@@ -834,11 +839,11 @@ extern int iscsit_stop_time2retain_timer(struct iscsi_session *sess)
return 0;
sess->time2retain_timer_flags |= ISCSI_TF_STOP;
- spin_unlock_bh(&se_tpg->session_lock);
+ spin_unlock(&se_tpg->session_lock);
del_timer_sync(&sess->time2retain_timer);
- spin_lock_bh(&se_tpg->session_lock);
+ spin_lock(&se_tpg->session_lock);
sess->time2retain_timer_flags &= ~ISCSI_TF_RUNNING;
pr_debug("Stopped Time2Retain Timer for SID: %u\n",
sess->sid);
@@ -901,6 +906,7 @@ void iscsit_cause_connection_reinstatement(struct iscsi_conn *conn, int sleep)
wait_for_completion(&conn->conn_wait_comp);
complete(&conn->conn_post_wait_comp);
}
+EXPORT_SYMBOL(iscsit_cause_connection_reinstatement);
void iscsit_fall_back_to_erl0(struct iscsi_session *sess)
{
@@ -926,7 +932,7 @@ static void iscsit_handle_connection_cleanup(struct iscsi_conn *conn)
}
}
-extern void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn)
+void iscsit_take_action_for_connection_exit(struct iscsi_conn *conn)
{
spin_lock_bh(&conn->state_lock);
if (atomic_read(&conn->connection_exit)) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:15:50 +0000