MAC_INFO_ACK(D7mdi)

Synopsis

   #include <sys/stream.h>
   #include <sys/mdi.h>
   

   typedef struct mac_info_ack {
   	ulong		mac_primitive;
   	ulong		mac_max_sdu;
   	ulong		mac_min_sdu;
   	ulong		mac_mac_type;
   	ulong		mac_driver_version;
   	ulong		mac_if_speed;
   } mac_info_ack_t;

Description

Parameters

mac_primitive

conveys the MAC_INFO_ACK(D7mdi) message

mac_max_sdu

conveys the maximum frame size (in bytes) that the MAC user can send to the MDI driver. For Ethernet, this value is 1514. For Token Ring it may be larger.

mac_min_sdu

conveys the minimum frame size (in bytes) that the MAC user can send to the MDI driver. For both Ethernet and Token Ring, this value is 14.

mac_mac_type

conveys the network MAC type, which must be one of:

   #define MAC_CSMACD 0x0	/* IEEE 802.3 CSMA/CD network */
   #define MAC_TPR    0x02	/* IEEE 802.5 Token Passing Ring */
   #define MAC_FDDI   0x08	/* FDDI on Copper/Fiber */

See the mac_stats_eth(D4mdi), mac_stats_fddi(D4mdi), and mac_stats_tr(D4mdi) manual pages for details about the data formats for each media type.

mac_driver_version

conveys the version of the MDI to which the driver is written. For example, version 1.2 of this interface is encoded in the mdi.h header file as:

   #define MDI_VERSION 0x0102

mac_if_speed

conveys the interface speed in bits per second. For example:

media type	interface speed (b/s)
16Mb/s Token Ring	16,000,000
10Mb/s Ethernet	10,000,000
FDDI and 100BaseT	100,000,000

 media type          interface speed (b/s)
 ------------------------------------------
 16Mb/s Token Ring   16,000,000
 10Mb/s Ethernet     10,000,000
 FDDI and 100BaseT   100,000,000

The value passed in mac_if_speed should match the current interface speed. For example, if a 10/100 Ethernet adapter is currently using 10BaseT, mac_if_speed should be 10000000. If this interface is currently using 100BaseT, mac_if_speed should be 100000000.

State

Hardware applicability

Version applicability

References