d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
0216bcdd5d
freebsd-dev/sys/dev/sfxge/common/siena_mac.c
Andrew Rybchenko 460cb5684c sfxge: add prefast annotation to common code return types 
Using a typedef for common code return types (rather than "int")
allows the Prefast static analyser to understand when a function
has been successful (and thus when its postconditions must hold).

This greatly reduces then number of false positives reported by
prefast for error paths in common code functions.

Submitted by:   Andy Moreton <amoreton at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
MFC after:      2 days
2015-11-29 05:42:49 +00:00

437 lines
14 KiB
C
Raw Blame History

/*-
* Copyright (c) 2009-2015 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 "efsys.h"
#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)
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);
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_PROBE(fail2);
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
#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 */
#endif /* EFSYS_OPT_SIENA */
Reference in New Issue View Git Blame Copy Permalink