The GLDv2 MAC information (gld_mac_info) structure is the main data interface that links the device-specific driver with GLDv2. This structure contains data required by GLDv2 and a pointer to an optional additional driver-specific information structure.
Allocate the gld_mac_info structure using gld_mac_alloc(). Deallocate the structure using gld_mac_free(). Drivers must not make any assumptions about the length of this structure, which might vary in different releases of the Oracle Solaris OS, GLDv2, or both. Structure members private to GLDv2, not documented here, should neither be set nor be read by the device-specific driver.
The gld_mac_info(9S) structure contains the following fields.
caddr_t gldm_private; /* Driver private data */ int (*gldm_reset)(); /* Reset device */ int (*gldm_start)(); /* Start device */ int (*gldm_stop)(); /* Stop device */ int (*gldm_set_mac_addr)(); /* Set device phys addr */ int (*gldm_set_multicast)(); /* Set/delete multicast addr */ int (*gldm_set_promiscuous)(); /* Set/reset promiscuous mode */ int (*gldm_send)(); /* Transmit routine */ uint_t (*gldm_intr)(); /* Interrupt handler */ int (*gldm_get_stats)(); /* Get device statistics */ int (*gldm_ioctl)(); /* Driver-specific ioctls */ char *gldm_ident; /* Driver identity string */ uint32_t gldm_type; /* Device type */ uint32_t gldm_minpkt; /* Minimum packet size */ /* accepted by driver */ uint32_t gldm_maxpkt; /* Maximum packet size */ /* accepted by driver */ uint32_t gldm_addrlen; /* Physical address length */ int32_t gldm_saplen; /* SAP length for DL_INFO_ACK */ unsigned char *gldm_broadcast_addr; /* Physical broadcast addr */ unsigned char *gldm_vendor_addr; /* Factory MAC address */ t_uscalar_t gldm_ppa; /* Physical Point of */ /* Attachment (PPA) number */ dev_info_t *gldm_devinfo; /* Pointer to device's */ /* dev_info node */ ddi_iblock_cookie_t gldm_cookie; /* Device's interrupt */ /* block cookie */
The gldm_private structure member is visible to the device driver. gldm_private is also private to the device-specific driver. gldm_private is not used or modified by GLDv2. Conventionally, gldm_private is used as a pointer to private data, pointing to a per-instance data structure that is both defined and allocated by the driver.
The following group of structure members must be set by the driver before calling gld_register(), and should not thereafter be modified by the driver. Because gld_register() might use or cache the values of structure members, changes made by the driver after calling gld_register() might cause unpredictable results. For more information on these structures, see the gld(9E) man page.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point.
Pointer to driver entry point. This pointer is allowed to be null.
Pointer to a string that contains a short description of the device. This pointer is used to identify the device in system messages.
Type of device the driver handles. GLDv2 currently supports the following values:
DL_ETHER (ISO 8802-3 (IEEE 802.3) and Ethernet Bus)
DL_TPR (IEEE 802.5 Token Passing Ring)
DL_FDDI (ISO 9314-2 Fibre Distributed Data Interface)
This structure member must be correctly set for GLDv2 to function properly.
Minimum Service Data Unit size: the minimum packet size, not including the MAC header, that the device can transmit. This size is allowed to be zero if the device-specific driver handles any required padding.
Maximum Service Data Unit size: the maximum size of packet, not including the MAC header, that can be transmitted by the device. For Ethernet, this number is 1500.
The length in bytes of physical addresses handled by the device. For Ethernet, Token Ring, and FDDI, the value of this structure member should be 6.
The length in bytes of the SAP address used by the driver. For GLDv2-based drivers, the length should always be set to -2. A length of -2 indicates that 2-byte SAP values are supported and that the SAP appears after the physical address in a DLSAP address. See Appendix A.2, “Message DL_INFO_ACK,” in the DLPI specification for more details.
Pointer to an array of bytes of length gldm_addrlen containing the broadcast address to be used for transmit. The driver must provide space to hold the broadcast address, fill the space with the appropriate value, and set gldm_broadcast_addr to point to the address. For Ethernet, Token Ring, and FDDI, the broadcast address is normally 0xFF-FF-FF-FF-FF-FF.
Pointer to an array of bytes of length gldm_addrlen that contains the vendor-provided network physical address of the device. The driver must provide space to hold the address, fill the space with information from the device, and set gldm_vendor_addr to point to the address.
PPA number for this instance of the device. The PPA number should always be set to the instance number that is returned from ddi_get_instance(9F).
Pointer to the dev_info node for this device.
Interrupt block cookie returned by one of the following routines:
This cookie must correspond to the device's receive-interrupt, from which gld_recv() is called.