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path: root/drivers/target/iscsi/iscsi_target_parameters.c
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Diffstat (limited to 'drivers/target/iscsi/iscsi_target_parameters.c')
-rw-r--r--drivers/target/iscsi/iscsi_target_parameters.c87
1 files changed, 78 insertions, 9 deletions
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c
index ca2be406f141..f690be9e5293 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.c
+++ b/drivers/target/iscsi/iscsi_target_parameters.c
@@ -59,7 +59,7 @@ int iscsi_login_tx_data(
char *text_buf,
int text_length)
{
- int length, tx_sent;
+ int length, tx_sent, iov_cnt = 1;
struct kvec iov[2];
length = (ISCSI_HDR_LEN + text_length);
@@ -67,8 +67,12 @@ int iscsi_login_tx_data(
memset(&iov[0], 0, 2 * sizeof(struct kvec));
iov[0].iov_len = ISCSI_HDR_LEN;
iov[0].iov_base = pdu_buf;
- iov[1].iov_len = text_length;
- iov[1].iov_base = text_buf;
+
+ if (text_buf && text_length) {
+ iov[1].iov_len = text_length;
+ iov[1].iov_base = text_buf;
+ iov_cnt++;
+ }
/*
* Initial Marker-less Interval.
@@ -77,7 +81,7 @@ int iscsi_login_tx_data(
*/
conn->if_marker += length;
- tx_sent = tx_data(conn, &iov[0], 2, length);
+ tx_sent = tx_data(conn, &iov[0], iov_cnt, length);
if (tx_sent != length) {
pr_err("tx_data returned %d, expecting %d.\n",
tx_sent, length);
@@ -429,6 +433,28 @@ int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
TYPERANGE_MARKINT, USE_INITIAL_ONLY);
if (!param)
goto out;
+ /*
+ * Extra parameters for ISER from RFC-5046
+ */
+ param = iscsi_set_default_param(pl, RDMAEXTENTIONS, INITIAL_RDMAEXTENTIONS,
+ PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
+ TYPERANGE_BOOL_AND, USE_LEADING_ONLY);
+ if (!param)
+ goto out;
+
+ param = iscsi_set_default_param(pl, INITIATORRECVDATASEGMENTLENGTH,
+ INITIAL_INITIATORRECVDATASEGMENTLENGTH,
+ PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
+ TYPERANGE_512_TO_16777215, USE_ALL);
+ if (!param)
+ goto out;
+
+ param = iscsi_set_default_param(pl, TARGETRECVDATASEGMENTLENGTH,
+ INITIAL_TARGETRECVDATASEGMENTLENGTH,
+ PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
+ TYPERANGE_512_TO_16777215, USE_ALL);
+ if (!param)
+ goto out;
*param_list_ptr = pl;
return 0;
@@ -438,19 +464,23 @@ out:
}
int iscsi_set_keys_to_negotiate(
- int sessiontype,
- struct iscsi_param_list *param_list)
+ struct iscsi_param_list *param_list,
+ bool iser)
{
struct iscsi_param *param;
+ param_list->iser = iser;
+
list_for_each_entry(param, &param_list->param_list, p_list) {
param->state = 0;
if (!strcmp(param->name, AUTHMETHOD)) {
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, HEADERDIGEST)) {
- SET_PSTATE_NEGOTIATE(param);
+ if (iser == false)
+ SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, DATADIGEST)) {
- SET_PSTATE_NEGOTIATE(param);
+ if (iser == false)
+ SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, MAXCONNECTIONS)) {
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, TARGETNAME)) {
@@ -469,7 +499,8 @@ int iscsi_set_keys_to_negotiate(
} else if (!strcmp(param->name, IMMEDIATEDATA)) {
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
- SET_PSTATE_NEGOTIATE(param);
+ if (iser == false)
+ SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
continue;
} else if (!strcmp(param->name, MAXBURSTLENGTH)) {
@@ -498,6 +529,15 @@ int iscsi_set_keys_to_negotiate(
SET_PSTATE_NEGOTIATE(param);
} else if (!strcmp(param->name, OFMARKINT)) {
SET_PSTATE_NEGOTIATE(param);
+ } else if (!strcmp(param->name, RDMAEXTENTIONS)) {
+ if (iser == true)
+ SET_PSTATE_NEGOTIATE(param);
+ } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
+ if (iser == true)
+ SET_PSTATE_NEGOTIATE(param);
+ } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
+ if (iser == true)
+ SET_PSTATE_NEGOTIATE(param);
}
}
@@ -540,6 +580,12 @@ int iscsi_set_keys_irrelevant_for_discovery(
param->state &= ~PSTATE_NEGOTIATE;
else if (!strcmp(param->name, OFMARKINT))
param->state &= ~PSTATE_NEGOTIATE;
+ else if (!strcmp(param->name, RDMAEXTENTIONS))
+ param->state &= ~PSTATE_NEGOTIATE;
+ else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH))
+ param->state &= ~PSTATE_NEGOTIATE;
+ else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH))
+ param->state &= ~PSTATE_NEGOTIATE;
}
return 0;
@@ -1755,6 +1801,9 @@ void iscsi_set_connection_parameters(
* this key is not sent over the wire.
*/
if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
+ if (param_list->iser == true)
+ continue;
+
ops->MaxXmitDataSegmentLength =
simple_strtoul(param->value, &tmpptr, 0);
pr_debug("MaxXmitDataSegmentLength: %s\n",
@@ -1800,6 +1849,22 @@ void iscsi_set_connection_parameters(
simple_strtoul(param->value, &tmpptr, 0);
pr_debug("IFMarkInt: %s\n",
param->value);
+ } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
+ ops->InitiatorRecvDataSegmentLength =
+ simple_strtoul(param->value, &tmpptr, 0);
+ pr_debug("InitiatorRecvDataSegmentLength: %s\n",
+ param->value);
+ ops->MaxRecvDataSegmentLength =
+ ops->InitiatorRecvDataSegmentLength;
+ pr_debug("Set MRDSL from InitiatorRecvDataSegmentLength\n");
+ } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
+ ops->TargetRecvDataSegmentLength =
+ simple_strtoul(param->value, &tmpptr, 0);
+ pr_debug("TargetRecvDataSegmentLength: %s\n",
+ param->value);
+ ops->MaxXmitDataSegmentLength =
+ ops->TargetRecvDataSegmentLength;
+ pr_debug("Set MXDSL from TargetRecvDataSegmentLength\n");
}
}
pr_debug("----------------------------------------------------"
@@ -1912,6 +1977,10 @@ void iscsi_set_session_parameters(
ops->SessionType = !strcmp(param->value, DISCOVERY);
pr_debug("SessionType: %s\n",
param->value);
+ } else if (!strcmp(param->name, RDMAEXTENTIONS)) {
+ ops->RDMAExtensions = !strcmp(param->value, YES);
+ pr_debug("RDMAExtensions: %s\n",
+ param->value);
}
}
pr_debug("----------------------------------------------------"
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-09 05:16:31 +0300