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freebsd-dev/sys/dev/sfxge/common/siena_mac.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009-2016 Solarflare Communications Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are
* those of the authors and should not be interpreted as representing official
* policies, either expressed or implied, of the FreeBSD Project.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "efx.h"
#include "efx_impl.h"
#if EFSYS_OPT_SIENA
__checkReturn efx_rc_t
siena_mac_poll(
__in efx_nic_t *enp,
__out efx_link_mode_t *link_modep)
{
efx_port_t *epp = &(enp->en_port);
siena_link_state_t sls;
efx_rc_t rc;
if ((rc = siena_phy_get_link(enp, &sls)) != 0)
goto fail1;
epp->ep_adv_cap_mask = sls.sls_adv_cap_mask;
epp->ep_fcntl = sls.sls_fcntl;
*link_modep = sls.sls_link_mode;
return (0);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
*link_modep = EFX_LINK_UNKNOWN;
return (rc);
}
__checkReturn efx_rc_t
siena_mac_up(
__in efx_nic_t *enp,
__out boolean_t *mac_upp)
{
siena_link_state_t sls;
efx_rc_t rc;
/*
* Because Siena doesn't *require* polling, we can't rely on
* siena_mac_poll() being executed to populate epp->ep_mac_up.
*/
if ((rc = siena_phy_get_link(enp, &sls)) != 0)
goto fail1;
*mac_upp = sls.sls_mac_up;
return (0);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
__checkReturn efx_rc_t
siena_mac_reconfigure(
__in efx_nic_t *enp)
{
efx_port_t *epp = &(enp->en_port);
efx_oword_t multicast_hash[2];
efx_mcdi_req_t req;
uint8_t payload[MAX(MAX(MC_CMD_SET_MAC_IN_LEN,
MC_CMD_SET_MAC_OUT_LEN),
MAX(MC_CMD_SET_MCAST_HASH_IN_LEN,
MC_CMD_SET_MCAST_HASH_OUT_LEN))];
unsigned int fcntl;
efx_rc_t rc;
(void) memset(payload, 0, sizeof (payload));
req.emr_cmd = MC_CMD_SET_MAC;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_SET_MAC_IN_LEN;
req.emr_out_buf = payload;
req.emr_out_length = MC_CMD_SET_MAC_OUT_LEN;
MCDI_IN_SET_DWORD(req, SET_MAC_IN_MTU, epp->ep_mac_pdu);
MCDI_IN_SET_DWORD(req, SET_MAC_IN_DRAIN, epp->ep_mac_drain ? 1 : 0);
EFX_MAC_ADDR_COPY(MCDI_IN2(req, uint8_t, SET_MAC_IN_ADDR),
epp->ep_mac_addr);
MCDI_IN_POPULATE_DWORD_2(req, SET_MAC_IN_REJECT,
SET_MAC_IN_REJECT_UNCST, !epp->ep_all_unicst,
SET_MAC_IN_REJECT_BRDCST, !epp->ep_brdcst);
if (epp->ep_fcntl_autoneg)
/* efx_fcntl_set() has already set the phy capabilities */
fcntl = MC_CMD_FCNTL_AUTO;
else if (epp->ep_fcntl & EFX_FCNTL_RESPOND)
fcntl = (epp->ep_fcntl & EFX_FCNTL_GENERATE)
? MC_CMD_FCNTL_BIDIR
: MC_CMD_FCNTL_RESPOND;
else
fcntl = MC_CMD_FCNTL_OFF;
MCDI_IN_SET_DWORD(req, SET_MAC_IN_FCNTL, fcntl);
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail1;
}
/* Push multicast hash */
if (epp->ep_all_mulcst) {
/* A hash matching all multicast is all 1s */
EFX_SET_OWORD(multicast_hash[0]);
EFX_SET_OWORD(multicast_hash[1]);
} else if (epp->ep_mulcst) {
/* Use the hash set by the multicast list */
multicast_hash[0] = epp->ep_multicst_hash[0];
multicast_hash[1] = epp->ep_multicst_hash[1];
} else {
/* A hash matching no traffic is simply 0 */
EFX_ZERO_OWORD(multicast_hash[0]);
EFX_ZERO_OWORD(multicast_hash[1]);
}
/*
* Broadcast packets go through the multicast hash filter.
* The IEEE 802.3 CRC32 of the broadcast address is 0xbe2612ff
* so we always add bit 0xff to the mask (bit 0x7f in the
* second octword).
*/
if (epp->ep_brdcst) {
/*
* NOTE: due to constant folding, some of this evaluates
* to null expressions, giving E_EXPR_NULL_EFFECT during
* lint on Illumos. No good way to fix this without
* explicit coding the individual word/bit setting.
* So just suppress lint for this one line.
*/
/* LINTED */
EFX_SET_OWORD_BIT(multicast_hash[1], 0x7f);
}
(void) memset(payload, 0, sizeof (payload));
req.emr_cmd = MC_CMD_SET_MCAST_HASH;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_SET_MCAST_HASH_IN_LEN;
req.emr_out_buf = payload;
req.emr_out_length = MC_CMD_SET_MCAST_HASH_OUT_LEN;
memcpy(MCDI_IN2(req, uint8_t, SET_MCAST_HASH_IN_HASH0),
multicast_hash, sizeof (multicast_hash));
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail2;
}
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
#if EFSYS_OPT_LOOPBACK
__checkReturn efx_rc_t
siena_mac_loopback_set(
__in efx_nic_t *enp,
__in efx_link_mode_t link_mode,
__in efx_loopback_type_t loopback_type)
{
efx_port_t *epp = &(enp->en_port);
const efx_phy_ops_t *epop = epp->ep_epop;
efx_loopback_type_t old_loopback_type;
efx_link_mode_t old_loopback_link_mode;
efx_rc_t rc;
/* The PHY object handles this on Siena */
old_loopback_type = epp->ep_loopback_type;
old_loopback_link_mode = epp->ep_loopback_link_mode;
epp->ep_loopback_type = loopback_type;
epp->ep_loopback_link_mode = link_mode;
if ((rc = epop->epo_reconfigure(enp)) != 0)
goto fail1;
return (0);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
epp->ep_loopback_type = old_loopback_type;
epp->ep_loopback_link_mode = old_loopback_link_mode;
return (rc);
}
#endif /* EFSYS_OPT_LOOPBACK */
#if EFSYS_OPT_MAC_STATS
__checkReturn efx_rc_t
siena_mac_stats_get_mask(
__in efx_nic_t *enp,
__inout_bcount(mask_size) uint32_t *maskp,
__in size_t mask_size)
{
const struct efx_mac_stats_range siena_stats[] = {
{ EFX_MAC_RX_OCTETS, EFX_MAC_RX_GE_15XX_PKTS },
/* EFX_MAC_RX_ERRORS is not supported */
{ EFX_MAC_RX_FCS_ERRORS, EFX_MAC_TX_EX_DEF_PKTS },
};
efx_rc_t rc;
_NOTE(ARGUNUSED(enp))
if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
siena_stats, EFX_ARRAY_SIZE(siena_stats))) != 0)
goto fail1;
return (0);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
#define SIENA_MAC_STAT_READ(_esmp, _field, _eqp) \
EFSYS_MEM_READQ((_esmp), (_field) * sizeof (efx_qword_t), _eqp)
__checkReturn efx_rc_t
siena_mac_stats_update(
__in efx_nic_t *enp,
__in efsys_mem_t *esmp,
__inout_ecount(EFX_MAC_NSTATS) efsys_stat_t *stat,
__inout_opt uint32_t *generationp)
{
efx_qword_t value;
efx_qword_t generation_start;
efx_qword_t generation_end;
_NOTE(ARGUNUSED(enp))
/* Read END first so we don't race with the MC */
EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFX_MAC_STATS_SIZE);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_GENERATION_END,
&generation_end);
EFSYS_MEM_READ_BARRIER();
/* TX */
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_CONTROL_PKTS, &value);
EFSYS_STAT_SUBR_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PAUSE_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PAUSE_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_UNICAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_UNICST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTICAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULTICST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BROADCAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_BRDCST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BYTES, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_OCTETS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LT64_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_64_PKTS, &value);
EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_65_TO_127_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_65_TO_127_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_128_TO_255_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_128_TO_255_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_256_TO_511_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_256_TO_511_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_512_TO_1023_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_512_TO_1023_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_1024_TO_15XX_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_1024_TO_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_15XX_TO_JUMBO_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_GTJUMBO_PKTS, &value);
EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BAD_FCS_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_SINGLE_COLLISION_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_SGL_COL_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTIPLE_COLLISION_PKTS,
&value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULT_COL_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_COLLISION_PKTS,
&value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_COL_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LATE_COLLISION_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LATE_COL_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_DEFERRED_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_DEF_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_DEFERRED_PKTS,
&value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_DEF_PKTS]), &value);
/* RX */
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BYTES, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_OCTETS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNICAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_UNICST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MULTICAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MULTICST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BROADCAST_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_BRDCST_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PAUSE_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PAUSE_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNDERSIZE_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_64_PKTS, &value);
EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_65_TO_127_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_65_TO_127_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_128_TO_255_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_128_TO_255_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_256_TO_511_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_256_TO_511_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_512_TO_1023_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_512_TO_1023_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_1024_TO_15XX_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_1024_TO_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_15XX_TO_JUMBO_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_GTJUMBO_PKTS, &value);
EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BAD_FCS_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FCS_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_OVERFLOW_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_DROP_EVENTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_FALSE_CARRIER_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FALSE_CARRIER_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_SYMBOL_ERROR_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_SYMBOL_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_ALIGN_ERROR_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_ALIGN_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_INTERNAL_ERROR_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_INTERNAL_ERRORS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_JABBER_PKTS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_JABBER_PKTS]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_CHAR_ERR, &value);
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_CHAR_ERR]),
&(value.eq_dword[0]));
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_CHAR_ERR]),
&(value.eq_dword[1]));
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_CHAR_ERR, &value);
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_CHAR_ERR]),
&(value.eq_dword[0]));
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_CHAR_ERR]),
&(value.eq_dword[1]));
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_DISP_ERR, &value);
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_DISP_ERR]),
&(value.eq_dword[0]));
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_DISP_ERR]),
&(value.eq_dword[1]));
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_DISP_ERR, &value);
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_DISP_ERR]),
&(value.eq_dword[0]));
EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_DISP_ERR]),
&(value.eq_dword[1]));
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MATCH_FAULT, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MATCH_FAULT]), &value);
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_NODESC_DROPS, &value);
EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_NODESC_DROP_CNT]), &value);
EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFX_MAC_STATS_SIZE);
EFSYS_MEM_READ_BARRIER();
SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_GENERATION_START,
&generation_start);
/* Check that we didn't read the stats in the middle of a DMA */
/* Not a good enough check ? */
if (memcmp(&generation_start, &generation_end,
sizeof (generation_start)))
return (EAGAIN);
if (generationp)
*generationp = EFX_QWORD_FIELD(generation_start, EFX_DWORD_0);
return (0);
}
#endif /* EFSYS_OPT_MAC_STATS */
__checkReturn efx_rc_t
siena_mac_pdu_get(
__in efx_nic_t *enp,
__out size_t *pdu)
{
return (ENOTSUP);
}
#endif /* EFSYS_OPT_SIENA */
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