net_getmtu(9f)

1net_getmtu(9F)           Kernel Functions for Drivers           net_getmtu(9F)
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NAME

6       net_getmtu - determine the MTU of a given network interface
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SYNOPSIS

9       #include <sys/neti.h>
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11       int net_getmtu(const net_data_t net, const phy_if_t ifp);
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INTERFACE LEVEL

15       Solaris DDI specific (Solaris DDI).
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PARAMETERS

18       net    value   returned   from   a   successful   call   to  net_proto‐
19              col_lookup(9F).
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22       ifp    value returned from a successful call  to  net_phylookup(9F)  or
23              net_phygetnext(9F).
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DESCRIPTION

27       The net_getmtu() function receives information about the current MTU of
28       a network interface. The value returned from this function call  should
29       not be cached as the MTU of a network interface since it is not guaran‐
30       teed to be constant.
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RETURN VALUES

33       The net_getmtu() function returns -1 if the network protocol  does  not
34       support  this feature and otherwise returns the current MTU of the net‐
35       work interface.
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CONTEXT

38       The net_getmtu() function may be called from user,  kernel,  or  inter‐
39       rupt context.
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ATTRIBUTES

42       See attributes(5) for descriptions of the following attributes:
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47       ┌─────────────────────────────┬─────────────────────────────┐
48       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
49       ├─────────────────────────────┼─────────────────────────────┤
50       │Availability                 │SUNWcsu                      │
51       ├─────────────────────────────┼─────────────────────────────┤
52       │Interface Stability          │Committed                    │
53       └─────────────────────────────┴─────────────────────────────┘
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