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mpt_event_register(9) [centos man page]

MPT_EVENT_REGISTER(9)					       Message-based devices					     MPT_EVENT_REGISTER(9)

NAME
mpt_event_register - Register protocol-specific event callback handler. SYNOPSIS
int mpt_event_register(u8 cb_idx, MPT_EVHANDLER ev_cbfunc); ARGUMENTS
cb_idx previously registered (via mpt_register) callback handle ev_cbfunc callback function DESCRIPTION
This routine can be called by one or more protocol-specific drivers if/when they choose to be notified of MPT events. Returns 0 for success. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 MPT_EVENT_REGISTER(9)

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ldi_add_event_handler(9F)				   Kernel Functions for Drivers 				 ldi_add_event_handler(9F)

NAME
ldi_add_event_handler - add NDI event service callback handler SYNOPSIS
#include <sys/ddi_obsolete.h> int ldi_add_event_handler(ldi_handle_t lh, ddi_eventcookie_t ec, void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *) void *arg, ldi_callback_id_t *id); INTERFACE LEVEL
Obsolete PARAMETERS
ldi_handle_t lh Layered handle representing event notification device. ddi_eventcookie_t ec Cookie returned from call to ldi_get_eventcookie(9F). void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *) Callback handler for NDI event service notification. void *arg Pointer to opaque data supplied by caller. Typically, this is a pointer to the layered driver's softstate structure. ldi_callback_id_t *id Pointer to registration id, where a unique registration id is returned. Registration id must be saved and used when calling ldi_remove_event_handler(9F) to unregister a callback handler. DESCRIPTION
This function is obsolete and is only maintained for compatibility. Use of this function is strongly discouraged. For equivalent function- ality provided by new interfaces, see ldi_ev_get_cookie(9F) and ldi_ev_register_callbacks(9F). The ldi_add_event_handler() function adds a callback handler to be invoked at the occurance of the event specified by the cookie. Adding a callback handler is also known as subscribing to an event. Upon successful subscription, the handler is invoked when the event occurs. You can unregister the handler by using ldi_remove_event_handler(9F). An instance of a layered driver can register multiple handlers for an event or a single handler for multiple events. Callback order is not defined and should be assumed to be random. The routine handler is invoked with the following arguments: ldi_handle_t lh Layered handle representing the device for which the event notification is requested. ddi_eventcookie_t ec Structure describing event that occurred. void *arg Opaque data pointer provided by the driver during callback registration. void *impl_data Pointer to event specific data defined by the framework that invokes the callback function. RETURN VALUES
DDI_SUCCESS Callback handler registered successfully. DDI_FAILURE Failed to register callback handler. Possible reasons include lack of resources or a bad cookie. CONTEXT
The ldi_add_event_handler() function can be called from user and kernel contexts only. SEE ALSO
ldi_ev_get_cookie(9F), ldi_ev_register_callbacks(9F), ldi_get_eventcookie(9F), ldi_remove_event_handler(9F) Writing Device Drivers NOTES
Layered drivers must remove all registered callback handlers for a device instance, represented by the layered handle, by calling ldi_remove_event_handler(9F) before the layered driver's detach(9E) routine completes. SunOS 5.11 21 Aug 2007 ldi_add_event_handler(9F)
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