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[SCSI] scsi_transport_iscsi: added support for host event

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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>
This commit is contained in:
Vikas Chaudhary
2012-02-13 18:30:46 +05:30
committed by James Bottomley
parent 46801ba698
commit a11e254595
3 changed files with 50 additions and 0 deletions
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13
include/scsi/iscsi_if.h
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@@ -72,6 +72,7 @@ enum iscsi_uevent_e {
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 @@ enum iscsi_tgt_dscvr {
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 iscsi_uevent {
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))));