sxge(7D) Devices sxge(7D)NAMEsxge - Sun Blade 40/10Gigabit Ethernet network driver
DESCRIPTION
The sxge 40/10Gb Ethernet driver is a multi-threaded, loadable, clon‐
able, GLD-based STREAMS driver supporting the Data Link Provider Inter‐
face, dlpi(7P), on the Sun Blade Shared 40/10Gb Ethernet Interface.
The Shared PCI-Express Gen-2 40/10Gb networking interface provides net‐
work I/O consolidation for up to ten Constellation blades, with each
blade seeing its own portion of the network interface.
The sxge driver functions include chip initialization, frame transmit
and receive, flow classification, multicast and promiscuous support and
error recovery and reporting in the blade domain.
APPLICATION PROGRAMMING INTERFACE
The cloning character-special device, /dev/sxge, is used to access Sun
Blade Shared 40/10Gb Ethernet Interface devices installed within the
system.
The sxge driver is managed by the dladm(1M) command line utility, which
allows VLANs to be defined on top of sxge instances and for sxge
instances to be aggregated. See dladm(1M) for more details.
You must send an explicit DL_ATTACH_REQ message to associate the opened
stream with a particular device (PPA). The PPA ID is interpreted as an
unsigned integer data type and indicates the corresponding device
instance (unit) number. The driver returns an error (DL_ERROR_ACK) if
the PPA field value does not correspond to a valid device instance num‐
ber for the system. The device is initialized on first attach and de-
initialized (stopped) at last detach.
The values returned by the driver in the DL_INFO_ACK primitive in
response to a DL_INFO_REQ are:
o Maximum SDU is 1500 (ETHERMTU, defined in <sys/ethernet.h>).
o Minimum SDU is 0.
o DLSAP address length is 8.
o MAC type is DL_ETHER.
o SAP length value is -2, meaning the physical address compo‐
nent is followed immediately by a 2-byte SAP component
within the DLSAP address.
o Broadcast address value is the Ethernet/IEEE broadcast
address (FF:FF:FF:FF:FF:FF).
In the transmit case for streams that have been put in raw
mode using the DLIOCRAW ioctl, the dlpi application must
prepend the 20 byte IPoIB destination address to the data
it wants to transmit over-the-wire. In the receive case,
applications receive the IP/ARP datagram along with the IETF
defined 4 byte header.
Once in the DL_ATTACHED state, you must send a DL_BIND_REQ to associate
a particular Service Access Point (SAP) with the stream.
Configuration
By default, the link speed is 10 Gbps. It can be configured from Net‐
work Express Module. The link mode is fixed to full-duplex only.
The default MTU is 1500. To enable jumbo frame support, you configure
the sxge driver by defining the accept-jumbo property to 1 in the
sxge.conf file. The largest jumbo size is 9194 bytes.
The sxge driver supports the self-healing functionality of the Oracle
Solaris OS. It is configured to DDI_FM_EREPORT_CAPABLE |
DDI_FM_ERRCB_CAPABLE by default. You configure the sxge driver by
defining the fm-capable property in sxge.conf to other capabilities or
to 0x0 to disable it entirely.
The sxge driver can be configured using the standard ifconfig(1M) com‐
mand.
The sxge driver also reports various hardware and software statistics
data. You can view these statistics using the kstat(1M) command.
In SR-IOV mode, the following device-specific parameters are exported
by the sxge driver to support SR-IOV feature.
max-config-vfs This is a read-only parameter describing the maximum
number of VFs that can be configured.
max-vf-mtu This is a read-only parameter describing the maximum
MTU allowed for a VF.
FILES
/dev/sxge* Special character device
/kernel/drv/sparcv9/sxge 64-bit device driver (SPARC)
/kernel/drv/amd64/sxge 64-bit device driver (x86)
/kernel/drv/sxge.conf Configuration file
ATTRIBUTES
See attributes(5) for a description of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ATTRIBUTE TYPE │ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Architecture │SPARC, x86 │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdladm(1M), ifconfig(1M), kstat(1M), ndd(1M), netstat(1M),
driver.conf(4), attributes(5), dlpi(7P), streamio(7I)
Writing Device Drivers
STREAMS Programming Guide
SunOS 5.10 17 Sep 2012 sxge(7D)
