Data Structures for Drivers                         mac_capab_lso(9S)

NAME

     mac_capab_lso, lso_basic_tcp_ipv4 -- LSO capability data
     strcuture

SYNOPSIS

     #include <sys/mac_provider.h>

INTERFACE LEVEL

     Solaris architecture specific (Solaris DDI).

DESCRIPTION

     The mac_capab_lso and lso_basic_tcp_ipv4 structures are used by a
     device driver to describe its LSO capability.  The structure is
     used as the argument to the mc_getcapab(9E) driver entry point
     when querying the MAC_CAPAB_LSO capability.

STRUCTURE MEMBERS 

     The mac_capab_lso data structure has the following members:

     t_uscalar_t		lso_flags;
     lso_basic_tcp_ipv4_t	lso_basic_tcp_ipv4;

     The fields must be set as follows:

     lso_flags			Flag indicating the LSO capability
				supported by the device driver instance.
				The following flags are currently
				supported:

				LSO_TX_BASIC_TCP_IPV4: LSO for
				    TCP on IPv4

     lso_basic_tcp_ipv4		Parameters for TCP LSO over IPv4

     The lso_basic_tcp_ipv4 data structure is used by the device driver
     to advertise specific parameters when the LSO_TX_BASIC_TCP_IPV4
     lso_flag is set. This data structure has the following elements:

     t_uscalar_t		lso_max;

     lso_max contains the maximum payload size supported by the driver
     instance.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWhea                     |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|

SEE ALSO

    mac_register(9F), mac_lso_get(9F)