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iSCSI Redirect support

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This patch adds support for persistant portals like they are common
to storage arrays with different interfaces or physical members.
This commit is contained in:
Peter Lieven
2012-10-18 10:48:52 +02:00
parent 4cb845477d
commit cb6f2ce252
3 changed files with 20 additions and 0 deletions
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1
include/iscsi.h
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@@ -231,6 +231,7 @@ enum scsi_status {
SCSI_STATUS_GOOD = 0,
SCSI_STATUS_CHECK_CONDITION = 2,
SCSI_STATUS_RESERVATION_CONFLICT = 0x18,
SCSI_STATUS_REDIRECT = 0x101,
SCSI_STATUS_CANCELLED = 0x0f000000,
SCSI_STATUS_ERROR = 0x0f000001
};

12
lib/connect.c
View File

@@ -35,6 +35,10 @@ struct connect_task {
int lun;
};
static void
iscsi_connect_cb(struct iscsi_context *iscsi, int status, void *command_data _U_,
void *private_data);
static void
iscsi_testunitready_cb(struct iscsi_context *iscsi, int status,
void *command_data, void *private_data)
@@ -82,6 +86,14 @@ iscsi_login_cb(struct iscsi_context *iscsi, int status, void *command_data _U_,
{
struct connect_task *ct = private_data;
if (status == 0x101 && iscsi->target_address) {
iscsi_disconnect(iscsi);
if (iscsi_connect_async(iscsi, iscsi->target_address, iscsi_connect_cb, iscsi->connect_data) != 0) {
return;
}
return;
}
if (status != 0) {
ct->cb(iscsi, SCSI_STATUS_ERROR, NULL, ct->private_data);
return;

7
lib/login.c
View File

@@ -1088,6 +1088,13 @@ iscsi_process_login_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
size -= len + 1;
}
if (status == 0x101 && iscsi->target_address) {
DPRINTF(iscsi,2,"target requests redirect to %s",iscsi->target_address);
pdu->callback(iscsi, SCSI_STATUS_REDIRECT, NULL,
pdu->private_data);
return 0;
}
if (status != 0) {
iscsi_set_error(iscsi, "Failed to log in to target. Status: %s(%d)",
login_error_str(status), status);