提交 052e5c7e 编写于 作者: L Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the remaining fixes for v3.15.

  This series includes:

   - iser-target fix for ImmediateData exception reference count bug
     (Sagi + nab)
   - iscsi-target fix for MC/S login + potential iser-target MRDSL
     buffer overrun (Santosh + Roland)
   - iser-target fix for v3.15-rc multi network portal shutdown
     regression (nab)
   - target fix for allowing READ_CAPCITY during ALUA Standby access
     state (Chris + nab)
   - target fix for NULL pointer dereference of alua_access_state for
     un-configured devices (Chris + nab)"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix alua_access_state attribute OOPs for un-configured devices
  target: Allow READ_CAPACITY opcode in ALUA Standby access state
  iser-target: Fix multi network portal shutdown regression
  iscsi-target: Fix wrong buffer / buffer overrun in iscsi_change_param_value()
  iser-target: Add missing target_put_sess_cmd for ImmedateData failure
......@@ -1210,6 +1210,8 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
if (!rc && dump_payload == false && unsol_data)
iscsit_set_unsoliticed_dataout(cmd);
else if (dump_payload && imm_data)
target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
return 0;
}
......
......@@ -460,6 +460,7 @@ int iscsit_del_np(struct iscsi_np *np)
spin_lock_bh(&np->np_thread_lock);
np->np_exports--;
if (np->np_exports) {
np->enabled = true;
spin_unlock_bh(&np->np_thread_lock);
return 0;
}
......
......@@ -249,6 +249,28 @@ static void iscsi_login_set_conn_values(
mutex_unlock(&auth_id_lock);
}
static __printf(2, 3) int iscsi_change_param_sprintf(
struct iscsi_conn *conn,
const char *fmt, ...)
{
va_list args;
unsigned char buf[64];
memset(buf, 0, sizeof buf);
va_start(args, fmt);
vsnprintf(buf, sizeof buf, fmt, args);
va_end(args);
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
return -1;
}
return 0;
}
/*
* This is the leading connection of a new session,
* or session reinstatement.
......@@ -339,7 +361,6 @@ static int iscsi_login_zero_tsih_s2(
{
struct iscsi_node_attrib *na;
struct iscsi_session *sess = conn->sess;
unsigned char buf[32];
bool iser = false;
sess->tpg = conn->tpg;
......@@ -380,26 +401,16 @@ static int iscsi_login_zero_tsih_s2(
*
* In our case, we have already located the struct iscsi_tiqn at this point.
*/
memset(buf, 0, 32);
sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt);
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "TargetPortalGroupTag=%hu", sess->tpg->tpgt))
return -1;
}
/*
* Workaround for Initiators that have broken connection recovery logic.
*
* "We would really like to get rid of this." Linux-iSCSI.org team
*/
memset(buf, 0, 32);
sprintf(buf, "ErrorRecoveryLevel=%d", na->default_erl);
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "ErrorRecoveryLevel=%d", na->default_erl))
return -1;
}
if (iscsi_login_disable_FIM_keys(conn->param_list, conn) < 0)
return -1;
......@@ -411,12 +422,9 @@ static int iscsi_login_zero_tsih_s2(
unsigned long mrdsl, off;
int rc;
sprintf(buf, "RDMAExtensions=Yes");
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "RDMAExtensions=Yes"))
return -1;
}
/*
* Make MaxRecvDataSegmentLength PAGE_SIZE aligned for
* Immediate Data + Unsolicitied Data-OUT if necessary..
......@@ -446,12 +454,8 @@ static int iscsi_login_zero_tsih_s2(
pr_warn("Aligning ISER MaxRecvDataSegmentLength: %lu down"
" to PAGE_SIZE\n", mrdsl);
sprintf(buf, "MaxRecvDataSegmentLength=%lu\n", mrdsl);
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "MaxRecvDataSegmentLength=%lu\n", mrdsl))
return -1;
}
/*
* ISER currently requires that ImmediateData + Unsolicited
* Data be disabled when protection / signature MRs are enabled.
......@@ -461,19 +465,12 @@ static int iscsi_login_zero_tsih_s2(
(TARGET_PROT_DOUT_STRIP | TARGET_PROT_DOUT_PASS |
TARGET_PROT_DOUT_INSERT)) {
sprintf(buf, "ImmediateData=No");
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "ImmediateData=No"))
return -1;
}
sprintf(buf, "InitialR2T=Yes");
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "InitialR2T=Yes"))
return -1;
}
pr_debug("Forcing ImmediateData=No + InitialR2T=Yes for"
" T10-PI enabled ISER session\n");
}
......@@ -618,13 +615,8 @@ static int iscsi_login_non_zero_tsih_s2(
*
* In our case, we have already located the struct iscsi_tiqn at this point.
*/
memset(buf, 0, 32);
sprintf(buf, "TargetPortalGroupTag=%hu", sess->tpg->tpgt);
if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
if (iscsi_change_param_sprintf(conn, "TargetPortalGroupTag=%hu", sess->tpg->tpgt))
return -1;
}
return iscsi_login_disable_FIM_keys(conn->param_list, conn);
}
......
......@@ -184,7 +184,8 @@ static void iscsit_clear_tpg_np_login_thread(
return;
}
tpg_np->tpg_np->enabled = false;
if (shutdown)
tpg_np->tpg_np->enabled = false;
iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
}
......
......@@ -576,7 +576,16 @@ static inline int core_alua_state_standby(
case REPORT_LUNS:
case RECEIVE_DIAGNOSTIC:
case SEND_DIAGNOSTIC:
case READ_CAPACITY:
return 0;
case SERVICE_ACTION_IN:
switch (cdb[1] & 0x1f) {
case SAI_READ_CAPACITY_16:
return 0;
default:
set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_STANDBY);
return 1;
}
case MAINTENANCE_IN:
switch (cdb[1] & 0x1f) {
case MI_REPORT_TARGET_PGS:
......
......@@ -2227,6 +2227,11 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
" tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
return -EINVAL;
}
if (!(dev->dev_flags & DF_CONFIGURED)) {
pr_err("Unable to set alua_access_state while device is"
" not configured\n");
return -ENODEV;
}
ret = kstrtoul(page, 0, &tmp);
if (ret < 0) {
......
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