[SCSI] scsi_transport_iscsi: added support for host event
Added support to post kernel host event to application using
netlink interface.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index e49b7c8..3aac991 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -72,6 +72,7 @@
ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7,
ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8,
ISCSI_KEVENT_CONN_LOGIN_STATE = KEVENT_BASE + 9,
+ ISCSI_KEVENT_HOST_EVENT = KEVENT_BASE + 10,
};
enum iscsi_tgt_dscvr {
@@ -80,6 +81,13 @@
ISCSI_TGT_DSCVR_SLP = 3,
};
+enum iscsi_host_event_code {
+ ISCSI_EVENT_LINKUP = 1,
+ ISCSI_EVENT_LINKDOWN,
+ /* must always be last */
+ ISCSI_EVENT_MAX,
+};
+
struct iscsi_uevent {
uint32_t type; /* k/u events type */
uint32_t iferror; /* carries interface or resource errors */
@@ -222,6 +230,11 @@
struct msg_notify_if_down {
uint32_t host_no;
} notify_if_down;
+ struct msg_host_event {
+ uint32_t host_no;
+ uint32_t data_size;
+ enum iscsi_host_event_code code;
+ } host_event;
} r;
} __attribute__ ((aligned (sizeof(uint64_t))));
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index fa7ca4e..7f04731 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -166,6 +166,12 @@
struct iscsi_transport *transport, uint32_t type,
char *data, uint16_t data_size);
+extern void iscsi_post_host_event(uint32_t host_no,
+ struct iscsi_transport *transport,
+ enum iscsi_host_event_code code,
+ uint32_t data_size,
+ uint8_t *data);
+
struct iscsi_cls_conn {
struct list_head conn_list; /* item in connlist */
void *dd_data; /* LLD private data */