net_protocol_notify_register(9f)

1net_protocol_notify_registKeerr(n9eFl)Functions for Dnreitv_eprrsotocol_notify_register(9F)
2
3
4

NAME

6       net_protocol_notify_register,     net_instance_protocol_unregister    -
7       add/delete a function to be called for changes to a protocol
8

SYNOPSIS

10       #include <sys/hook.h>
11       #include <sys/neti.h>
12
13       int net_protocol_notify_register(net_handle_t family,
14            hook_notify_fn_t *callback, void *arg);
15
16       int net_protocol_notify_unregister(net_handle_t family,
17            hook_notify_fn_t *callback);
18
19       typedef int (* hook_notify_fn_t)(hook_notify_cmd_t command,
20            void *arg, const char *name1, const char *name2, const char
21            *name3);
22
23

INTERFACE LEVEL

25       Solaris DDI specific (Solaris DDI).
26

PARAMETERS

28       family      value returned from net_protocol_lookup().
29
30
31       callback    function to call when a change occurs.
32
33
34       arg         pointer to pass into the callback() function when a  change
35                   occurs.
36
37

DESCRIPTION

39       The net_protocol_notify_register() function registers a function repre‐
40       sented by the pointer callback to be called when there is a  change  to
41       the  protocol  represented  by  family.  The types of changes for which
42       notifications are available for is currently limited  to  the  addition
43       and removal of protocols.
44
45
46       The  net_protocol_notify_unregister()  function  removes  the  function
47       specified by the pointer callback from the list of functions  to  call.
48       This call may fail if the specified function cannot be found.
49
50
51       Multiple  callback  functions may be registered through this interface.
52       The same set of parameters is passed to  each  callback  function.  The
53       memory referenced through the pointers passed to the callback should be
54       treated as pointing to read-only memory. Changing this data is strictly
55       prohibited.
56
57
58       The function that is called must not block any other protocols.
59
60
61       The  arguments  passed through to the callback are as follows (the com‐
62       mand is either HN_REGISTER or HN_UNREGISTER):
63
64       name1    is the name of the protocol
65
66
67       name2    is NULL.
68
69
70       name3    is the name of the protocol being added/removed
71
72

RETURN VALUES

74       If these functions succeed, 0 is  returned.  Otherwise,  the  following
75       error is returned:
76
77       EEXIST    the given callback function is already registered.
78
79

CONTEXT

81       These functions may be called from user or kernel context.
82

ATTRIBUTES

84       See attributes(5) for descriptions of the following attributes:
85
86
87
88
89       ┌─────────────────────────────┬─────────────────────────────┐
90       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
91       ├─────────────────────────────┼─────────────────────────────┤
92       │Availability                 │SUNWcsu                      │
93       ├─────────────────────────────┼─────────────────────────────┤
94       │Interface Stability          │Committed                    │
95       └─────────────────────────────┴─────────────────────────────┘
96