10-30-2010
Thanks sir, it worked. I was trying this with if else but didnt work out for me. Thanks again
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LEARN ABOUT OPENSOLARIS
net_instance_protocol_unregister
net_protocol_notify_register(9F) Kernel Functions for Drivers net_protocol_notify_register(9F)
NAME
net_protocol_notify_register, net_instance_protocol_unregister - add/delete a function to be called for changes to a protocol
SYNOPSIS
#include <sys/hook.h>
#include <sys/neti.h>
int net_protocol_notify_register(net_handle_t family,
hook_notify_fn_t *callback, void *arg);
int net_protocol_notify_unregister(net_handle_t family,
hook_notify_fn_t *callback);
typedef int (* hook_notify_fn_t)(hook_notify_cmd_t command,
void *arg, const char *name1, const char *name2, const char
*name3);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
family value returned from net_protocol_lookup().
callback function to call when a change occurs.
arg pointer to pass into the callback() function when a change occurs.
DESCRIPTION
The net_protocol_notify_register() function registers a function represented by the pointer callback to be called when there is a change to
the protocol represented by family. The types of changes for which notifications are available for is currently limited to the addition and
removal of protocols.
The net_protocol_notify_unregister() function removes the function specified by the pointer callback from the list of functions to call.
This call may fail if the specified function cannot be found.
Multiple callback functions may be registered through this interface. The same set of parameters is passed to each callback function. The
memory referenced through the pointers passed to the callback should be treated as pointing to read-only memory. Changing this data is
strictly prohibited.
The function that is called must not block any other protocols.
The arguments passed through to the callback are as follows (the command is either HN_REGISTER or HN_UNREGISTER):
name1 is the name of the protocol
name2 is NULL.
name3 is the name of the protocol being added/removed
RETURN VALUES
If these functions succeed, 0 is returned. Otherwise, the following error is returned:
EEXIST the given callback function is already registered.
CONTEXT
These functions may be called from user or kernel context.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5), net_protocol_lookup(9F)
SunOS 5.11 30 Oct 2008 net_protocol_notify_register(9F)