summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/target/iscsi/iscsi_target_configfs.c4
-rw-r--r--drivers/target/iscsi/iscsi_target_core.h1
-rw-r--r--drivers/target/iscsi/iscsi_target_parameters.c21
-rw-r--r--drivers/target/iscsi/iscsi_target_parameters.h5
4 files changed, 31 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index f86833fcf33c..f491f969ab95 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1034,6 +1034,9 @@ TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(MaxRecvDataSegmentLength);
TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
+DEF_TPG_PARAM(MaxXmitDataSegmentLength);
+TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
+
DEF_TPG_PARAM(MaxBurstLength);
TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
@@ -1079,6 +1082,7 @@ static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
&iscsi_tpg_param_InitialR2T.attr,
&iscsi_tpg_param_ImmediateData.attr,
&iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
+ &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
&iscsi_tpg_param_MaxBurstLength.attr,
&iscsi_tpg_param_FirstBurstLength.attr,
&iscsi_tpg_param_DefaultTime2Wait.attr,
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index 8a908b28d8b2..b26611aa5ff3 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -239,6 +239,7 @@ struct iscsi_conn_ops {
u8 HeaderDigest; /* [0,1] == [None,CRC32C] */
u8 DataDigest; /* [0,1] == [None,CRC32C] */
u32 MaxRecvDataSegmentLength; /* [512..2**24-1] */
+ u32 MaxXmitDataSegmentLength; /* [512..2**24-1] */
u8 OFMarker; /* [0,1] == [No,Yes] */
u8 IFMarker; /* [0,1] == [No,Yes] */
u32 OFMarkInt; /* [1..65535] */
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c
index 0c4760fabfc0..40864ee70302 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.c
+++ b/drivers/target/iscsi/iscsi_target_parameters.c
@@ -334,6 +334,13 @@ int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
if (!param)
goto out;
+ param = iscsi_set_default_param(pl, MAXXMITDATASEGMENTLENGTH,
+ INITIAL_MAXXMITDATASEGMENTLENGTH,
+ PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
+ TYPERANGE_512_TO_16777215, USE_ALL);
+ if (!param)
+ goto out;
+
param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH,
INITIAL_MAXRECVDATASEGMENTLENGTH,
PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
@@ -467,6 +474,8 @@ int iscsi_set_keys_to_negotiate(
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
SET_PSTATE_NEGOTIATE(param);
+ } else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
+ continue;
} else if (!strcmp(param->name, MAXBURSTLENGTH)) {
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
@@ -1720,6 +1729,18 @@ void iscsi_set_connection_parameters(
pr_debug("---------------------------------------------------"
"---------------\n");
list_for_each_entry(param, &param_list->param_list, p_list) {
+ /*
+ * Special case to set MAXXMITDATASEGMENTLENGTH from the
+ * target requested MaxRecvDataSegmentLength, even though
+ * this key is not sent over the wire.
+ */
+ if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
+ ops->MaxXmitDataSegmentLength =
+ simple_strtoul(param->value, &tmpptr, 0);
+ pr_debug("MaxXmitDataSegmentLength: %s\n",
+ param->value);
+ }
+
if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
continue;
if (!strcmp(param->name, AUTHMETHOD)) {
diff --git a/drivers/target/iscsi/iscsi_target_parameters.h b/drivers/target/iscsi/iscsi_target_parameters.h
index 6a37fd6f1285..77a28b589d56 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.h
+++ b/drivers/target/iscsi/iscsi_target_parameters.h
@@ -70,6 +70,7 @@ extern void iscsi_set_session_parameters(struct iscsi_sess_ops *,
#define INITIALR2T "InitialR2T"
#define IMMEDIATEDATA "ImmediateData"
#define MAXRECVDATASEGMENTLENGTH "MaxRecvDataSegmentLength"
+#define MAXXMITDATASEGMENTLENGTH "MaxXmitDataSegmentLength"
#define MAXBURSTLENGTH "MaxBurstLength"
#define FIRSTBURSTLENGTH "FirstBurstLength"
#define DEFAULTTIME2WAIT "DefaultTime2Wait"
@@ -113,6 +114,10 @@ extern void iscsi_set_session_parameters(struct iscsi_sess_ops *,
#define INITIAL_INITIALR2T YES
#define INITIAL_IMMEDIATEDATA YES
#define INITIAL_MAXRECVDATASEGMENTLENGTH "8192"
+/*
+ * Match outgoing MXDSL default to incoming Open-iSCSI default
+ */
+#define INITIAL_MAXXMITDATASEGMENTLENGTH "262144"
#define INITIAL_MAXBURSTLENGTH "262144"
#define INITIAL_FIRSTBURSTLENGTH "65536"
#define INITIAL_DEFAULTTIME2WAIT "2"