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mac_ring_info(9e)
mac_ring_info(9E) Driver Entry Points mac_ring_info(9E)
NAME
mac_ring_info, mri_start, mri_stop, mri_tx, mri_poll, mri_stat,
mri_intr_enable, mri_intr_disable - MAC ring info driver entry points
SYNOPSIS
#include <sys/mac_provider.h>
int mri_start(mac_ring_driver_t ring_handle, uint64_t gen_num);
void mri_stop(mac_ring_driver_t ring_handle);
mblk_t *mri_tx(void *arg, mblk_t *mp);
mblk_t *mri_poll(void *arg, int nbytes, int npackets);
int mri_stat(mac_ring_driver_t ring_handle, uint_t stat,
uint64_t *val);
int mri_intr_enable(mac_intr_handle_t *ihandle);
int mri_intr_disable(mac_intr_handle_t *ihandle);
PARAMETERS
ring_handle The opaque handle to the driver's representation of the
specified ring.
gen_num Generation number for this ring.
arg Opaque handle to the driver's ring.
mblk_t Chain of mblk packet buffers.
nbytes The number of total bytes that will be polled for this
call to mri_poll().
npackets The maximum number of packets that will be returned for
this call to mri_poll().
statsp The pointer to the ring statistic being queried.
ihandle The opaque handle to the driver private data represent‐
ing this interrupt.
INTERFACE LEVEL
Solaris architecture specific (Solaris DDI).
DESCRIPTION
The mri_start() function is the driver entry point called by the MAC
layer to start the ring processing packets.
The mri_stop() function is the driver entry point called by the MAC
layer to stop the ring processing packets.
The mri_tx() function is the driver entry point called by the MAC layer
to transmit packets. This is a TX ring only entry point.
The mri_poll() function is the driver entry point called by the MAC
layer to poll for the reception of incoming packets. This is RX ring
only driver entry point. Packets are returned to the MAC layer as a
chain of mblks. The parameters of nbytes is used to cap the number of
bytes that can be polled while the npackets parameters caps the number
of packets that can be polled.
The mri_stat() function is the driver entry point called to get various
ring statistics. Statistics included for TX/RX rings:
MAC_STAT_OERRORS
MAC_STAT_OBYTES
MAC_STAT_OPACKETS
MAC_STAT_IERRORS
MAC_STAT_IBYTES
MAC_STAT_IPACKETS
The mri_intr_enable() function is the driver entry point called by the
MAC layer to enable interrupts to re-enable interrupts while transi‐
tioning the ring from polling mode to interrupt mode. This is an RX
ring entry point.
The mri_intr_disable() function is the driver entry point called by the
MAC layer to disable interrupts for the specified ring while transi‐
tioning the ring to polling mode.
RETURN VALUES
The mri_start() function returns 0 on success and EIO when the opera‐
tion fails.
The mri_tx() function returns NULL if all packets are transmitted. It
returns some or all of the mblk chain if some or all of the packets
where processed.
The mri_poll() function returns It returns a chain of packets received
during this poll call or NULL if no packets where received.
The mri_stat() function returns 0 on success and ENOTSUP if the statis‐
tic is not supported.
The mri_intr_enable() function returns 0 on success.
The mri_intr_disable() function returns 0 on success.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/header _ Interface StabilityCommit‐
ted
SEE ALSO
attributes(7), mac_capab_rings(9E), mac_group_info(9E),
mac_capab_rings(9S), mac_register(9S)
Oracle Solaris 11.4 9 September 2024 mac_ring_info(9E)