blob: bdb893476832bd6da6032f23742be033fa741f52 [file] [log] [blame]
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Statistics for Ocelot switch family
*
* Copyright (c) 2017 Microsemi Corporation
* Copyright 2022 NXP
*/
#include <linux/ethtool_netlink.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include "ocelot.h"
enum ocelot_stat {
OCELOT_STAT_RX_OCTETS,
OCELOT_STAT_RX_UNICAST,
OCELOT_STAT_RX_MULTICAST,
OCELOT_STAT_RX_BROADCAST,
OCELOT_STAT_RX_SHORTS,
OCELOT_STAT_RX_FRAGMENTS,
OCELOT_STAT_RX_JABBERS,
OCELOT_STAT_RX_CRC_ALIGN_ERRS,
OCELOT_STAT_RX_SYM_ERRS,
OCELOT_STAT_RX_64,
OCELOT_STAT_RX_65_127,
OCELOT_STAT_RX_128_255,
OCELOT_STAT_RX_256_511,
OCELOT_STAT_RX_512_1023,
OCELOT_STAT_RX_1024_1526,
OCELOT_STAT_RX_1527_MAX,
OCELOT_STAT_RX_PAUSE,
OCELOT_STAT_RX_CONTROL,
OCELOT_STAT_RX_LONGS,
OCELOT_STAT_RX_CLASSIFIED_DROPS,
OCELOT_STAT_RX_RED_PRIO_0,
OCELOT_STAT_RX_RED_PRIO_1,
OCELOT_STAT_RX_RED_PRIO_2,
OCELOT_STAT_RX_RED_PRIO_3,
OCELOT_STAT_RX_RED_PRIO_4,
OCELOT_STAT_RX_RED_PRIO_5,
OCELOT_STAT_RX_RED_PRIO_6,
OCELOT_STAT_RX_RED_PRIO_7,
OCELOT_STAT_RX_YELLOW_PRIO_0,
OCELOT_STAT_RX_YELLOW_PRIO_1,
OCELOT_STAT_RX_YELLOW_PRIO_2,
OCELOT_STAT_RX_YELLOW_PRIO_3,
OCELOT_STAT_RX_YELLOW_PRIO_4,
OCELOT_STAT_RX_YELLOW_PRIO_5,
OCELOT_STAT_RX_YELLOW_PRIO_6,
OCELOT_STAT_RX_YELLOW_PRIO_7,
OCELOT_STAT_RX_GREEN_PRIO_0,
OCELOT_STAT_RX_GREEN_PRIO_1,
OCELOT_STAT_RX_GREEN_PRIO_2,
OCELOT_STAT_RX_GREEN_PRIO_3,
OCELOT_STAT_RX_GREEN_PRIO_4,
OCELOT_STAT_RX_GREEN_PRIO_5,
OCELOT_STAT_RX_GREEN_PRIO_6,
OCELOT_STAT_RX_GREEN_PRIO_7,
OCELOT_STAT_RX_ASSEMBLY_ERRS,
OCELOT_STAT_RX_SMD_ERRS,
OCELOT_STAT_RX_ASSEMBLY_OK,
OCELOT_STAT_RX_MERGE_FRAGMENTS,
OCELOT_STAT_RX_PMAC_OCTETS,
OCELOT_STAT_RX_PMAC_UNICAST,
OCELOT_STAT_RX_PMAC_MULTICAST,
OCELOT_STAT_RX_PMAC_BROADCAST,
OCELOT_STAT_RX_PMAC_SHORTS,
OCELOT_STAT_RX_PMAC_FRAGMENTS,
OCELOT_STAT_RX_PMAC_JABBERS,
OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS,
OCELOT_STAT_RX_PMAC_SYM_ERRS,
OCELOT_STAT_RX_PMAC_64,
OCELOT_STAT_RX_PMAC_65_127,
OCELOT_STAT_RX_PMAC_128_255,
OCELOT_STAT_RX_PMAC_256_511,
OCELOT_STAT_RX_PMAC_512_1023,
OCELOT_STAT_RX_PMAC_1024_1526,
OCELOT_STAT_RX_PMAC_1527_MAX,
OCELOT_STAT_RX_PMAC_PAUSE,
OCELOT_STAT_RX_PMAC_CONTROL,
OCELOT_STAT_RX_PMAC_LONGS,
OCELOT_STAT_TX_OCTETS,
OCELOT_STAT_TX_UNICAST,
OCELOT_STAT_TX_MULTICAST,
OCELOT_STAT_TX_BROADCAST,
OCELOT_STAT_TX_COLLISION,
OCELOT_STAT_TX_DROPS,
OCELOT_STAT_TX_PAUSE,
OCELOT_STAT_TX_64,
OCELOT_STAT_TX_65_127,
OCELOT_STAT_TX_128_255,
OCELOT_STAT_TX_256_511,
OCELOT_STAT_TX_512_1023,
OCELOT_STAT_TX_1024_1526,
OCELOT_STAT_TX_1527_MAX,
OCELOT_STAT_TX_YELLOW_PRIO_0,
OCELOT_STAT_TX_YELLOW_PRIO_1,
OCELOT_STAT_TX_YELLOW_PRIO_2,
OCELOT_STAT_TX_YELLOW_PRIO_3,
OCELOT_STAT_TX_YELLOW_PRIO_4,
OCELOT_STAT_TX_YELLOW_PRIO_5,
OCELOT_STAT_TX_YELLOW_PRIO_6,
OCELOT_STAT_TX_YELLOW_PRIO_7,
OCELOT_STAT_TX_GREEN_PRIO_0,
OCELOT_STAT_TX_GREEN_PRIO_1,
OCELOT_STAT_TX_GREEN_PRIO_2,
OCELOT_STAT_TX_GREEN_PRIO_3,
OCELOT_STAT_TX_GREEN_PRIO_4,
OCELOT_STAT_TX_GREEN_PRIO_5,
OCELOT_STAT_TX_GREEN_PRIO_6,
OCELOT_STAT_TX_GREEN_PRIO_7,
OCELOT_STAT_TX_AGED,
OCELOT_STAT_TX_MM_HOLD,
OCELOT_STAT_TX_MERGE_FRAGMENTS,
OCELOT_STAT_TX_PMAC_OCTETS,
OCELOT_STAT_TX_PMAC_UNICAST,
OCELOT_STAT_TX_PMAC_MULTICAST,
OCELOT_STAT_TX_PMAC_BROADCAST,
OCELOT_STAT_TX_PMAC_PAUSE,
OCELOT_STAT_TX_PMAC_64,
OCELOT_STAT_TX_PMAC_65_127,
OCELOT_STAT_TX_PMAC_128_255,
OCELOT_STAT_TX_PMAC_256_511,
OCELOT_STAT_TX_PMAC_512_1023,
OCELOT_STAT_TX_PMAC_1024_1526,
OCELOT_STAT_TX_PMAC_1527_MAX,
OCELOT_STAT_DROP_LOCAL,
OCELOT_STAT_DROP_TAIL,
OCELOT_STAT_DROP_YELLOW_PRIO_0,
OCELOT_STAT_DROP_YELLOW_PRIO_1,
OCELOT_STAT_DROP_YELLOW_PRIO_2,
OCELOT_STAT_DROP_YELLOW_PRIO_3,
OCELOT_STAT_DROP_YELLOW_PRIO_4,
OCELOT_STAT_DROP_YELLOW_PRIO_5,
OCELOT_STAT_DROP_YELLOW_PRIO_6,
OCELOT_STAT_DROP_YELLOW_PRIO_7,
OCELOT_STAT_DROP_GREEN_PRIO_0,
OCELOT_STAT_DROP_GREEN_PRIO_1,
OCELOT_STAT_DROP_GREEN_PRIO_2,
OCELOT_STAT_DROP_GREEN_PRIO_3,
OCELOT_STAT_DROP_GREEN_PRIO_4,
OCELOT_STAT_DROP_GREEN_PRIO_5,
OCELOT_STAT_DROP_GREEN_PRIO_6,
OCELOT_STAT_DROP_GREEN_PRIO_7,
OCELOT_NUM_STATS,
};
struct ocelot_stat_layout {
u32 reg;
char name[ETH_GSTRING_LEN];
};
/* 32-bit counter checked for wraparound by ocelot_port_update_stats()
* and copied to ocelot->stats.
*/
#define OCELOT_STAT(kind) \
[OCELOT_STAT_ ## kind] = { .reg = SYS_COUNT_ ## kind }
/* Same as above, except also exported to ethtool -S. Standard counters should
* only be exposed to more specific interfaces rather than by their string name.
*/
#define OCELOT_STAT_ETHTOOL(kind, ethtool_name) \
[OCELOT_STAT_ ## kind] = { .reg = SYS_COUNT_ ## kind, .name = ethtool_name }
#define OCELOT_COMMON_STATS \
OCELOT_STAT_ETHTOOL(RX_OCTETS, "rx_octets"), \
OCELOT_STAT_ETHTOOL(RX_UNICAST, "rx_unicast"), \
OCELOT_STAT_ETHTOOL(RX_MULTICAST, "rx_multicast"), \
OCELOT_STAT_ETHTOOL(RX_BROADCAST, "rx_broadcast"), \
OCELOT_STAT_ETHTOOL(RX_SHORTS, "rx_shorts"), \
OCELOT_STAT_ETHTOOL(RX_FRAGMENTS, "rx_fragments"), \
OCELOT_STAT_ETHTOOL(RX_JABBERS, "rx_jabbers"), \
OCELOT_STAT_ETHTOOL(RX_CRC_ALIGN_ERRS, "rx_crc_align_errs"), \
OCELOT_STAT_ETHTOOL(RX_SYM_ERRS, "rx_sym_errs"), \
OCELOT_STAT_ETHTOOL(RX_64, "rx_frames_below_65_octets"), \
OCELOT_STAT_ETHTOOL(RX_65_127, "rx_frames_65_to_127_octets"), \
OCELOT_STAT_ETHTOOL(RX_128_255, "rx_frames_128_to_255_octets"), \
OCELOT_STAT_ETHTOOL(RX_256_511, "rx_frames_256_to_511_octets"), \
OCELOT_STAT_ETHTOOL(RX_512_1023, "rx_frames_512_to_1023_octets"), \
OCELOT_STAT_ETHTOOL(RX_1024_1526, "rx_frames_1024_to_1526_octets"), \
OCELOT_STAT_ETHTOOL(RX_1527_MAX, "rx_frames_over_1526_octets"), \
OCELOT_STAT_ETHTOOL(RX_PAUSE, "rx_pause"), \
OCELOT_STAT_ETHTOOL(RX_CONTROL, "rx_control"), \
OCELOT_STAT_ETHTOOL(RX_LONGS, "rx_longs"), \
OCELOT_STAT_ETHTOOL(RX_CLASSIFIED_DROPS, "rx_classified_drops"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_0, "rx_red_prio_0"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_1, "rx_red_prio_1"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_2, "rx_red_prio_2"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_3, "rx_red_prio_3"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_4, "rx_red_prio_4"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_5, "rx_red_prio_5"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_6, "rx_red_prio_6"), \
OCELOT_STAT_ETHTOOL(RX_RED_PRIO_7, "rx_red_prio_7"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_0, "rx_yellow_prio_0"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_1, "rx_yellow_prio_1"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_2, "rx_yellow_prio_2"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_3, "rx_yellow_prio_3"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_4, "rx_yellow_prio_4"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_5, "rx_yellow_prio_5"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_6, "rx_yellow_prio_6"), \
OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_7, "rx_yellow_prio_7"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_0, "rx_green_prio_0"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_1, "rx_green_prio_1"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_2, "rx_green_prio_2"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_3, "rx_green_prio_3"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_4, "rx_green_prio_4"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_5, "rx_green_prio_5"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_6, "rx_green_prio_6"), \
OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_7, "rx_green_prio_7"), \
OCELOT_STAT_ETHTOOL(TX_OCTETS, "tx_octets"), \
OCELOT_STAT_ETHTOOL(TX_UNICAST, "tx_unicast"), \
OCELOT_STAT_ETHTOOL(TX_MULTICAST, "tx_multicast"), \
OCELOT_STAT_ETHTOOL(TX_BROADCAST, "tx_broadcast"), \
OCELOT_STAT_ETHTOOL(TX_COLLISION, "tx_collision"), \
OCELOT_STAT_ETHTOOL(TX_DROPS, "tx_drops"), \
OCELOT_STAT_ETHTOOL(TX_PAUSE, "tx_pause"), \
OCELOT_STAT_ETHTOOL(TX_64, "tx_frames_below_65_octets"), \
OCELOT_STAT_ETHTOOL(TX_65_127, "tx_frames_65_to_127_octets"), \
OCELOT_STAT_ETHTOOL(TX_128_255, "tx_frames_128_255_octets"), \
OCELOT_STAT_ETHTOOL(TX_256_511, "tx_frames_256_511_octets"), \
OCELOT_STAT_ETHTOOL(TX_512_1023, "tx_frames_512_1023_octets"), \
OCELOT_STAT_ETHTOOL(TX_1024_1526, "tx_frames_1024_1526_octets"), \
OCELOT_STAT_ETHTOOL(TX_1527_MAX, "tx_frames_over_1526_octets"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_0, "tx_yellow_prio_0"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_1, "tx_yellow_prio_1"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_2, "tx_yellow_prio_2"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_3, "tx_yellow_prio_3"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_4, "tx_yellow_prio_4"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_5, "tx_yellow_prio_5"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_6, "tx_yellow_prio_6"), \
OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_7, "tx_yellow_prio_7"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_0, "tx_green_prio_0"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_1, "tx_green_prio_1"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_2, "tx_green_prio_2"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_3, "tx_green_prio_3"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_4, "tx_green_prio_4"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_5, "tx_green_prio_5"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_6, "tx_green_prio_6"), \
OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_7, "tx_green_prio_7"), \
OCELOT_STAT_ETHTOOL(TX_AGED, "tx_aged"), \
OCELOT_STAT_ETHTOOL(DROP_LOCAL, "drop_local"), \
OCELOT_STAT_ETHTOOL(DROP_TAIL, "drop_tail"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_0, "drop_yellow_prio_0"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_1, "drop_yellow_prio_1"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_2, "drop_yellow_prio_2"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_3, "drop_yellow_prio_3"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_4, "drop_yellow_prio_4"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_5, "drop_yellow_prio_5"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_6, "drop_yellow_prio_6"), \
OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_7, "drop_yellow_prio_7"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_0, "drop_green_prio_0"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_1, "drop_green_prio_1"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_2, "drop_green_prio_2"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_3, "drop_green_prio_3"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_4, "drop_green_prio_4"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_5, "drop_green_prio_5"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_6, "drop_green_prio_6"), \
OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_7, "drop_green_prio_7")
struct ocelot_stats_region {
struct list_head node;
u32 base;
int count;
u32 *buf;
};
static const struct ocelot_stat_layout ocelot_stats_layout[OCELOT_NUM_STATS] = {
OCELOT_COMMON_STATS,
};
static const struct ocelot_stat_layout ocelot_mm_stats_layout[OCELOT_NUM_STATS] = {
OCELOT_COMMON_STATS,
OCELOT_STAT(RX_ASSEMBLY_ERRS),
OCELOT_STAT(RX_SMD_ERRS),
OCELOT_STAT(RX_ASSEMBLY_OK),
OCELOT_STAT(RX_MERGE_FRAGMENTS),
OCELOT_STAT(TX_MERGE_FRAGMENTS),
OCELOT_STAT(RX_PMAC_OCTETS),
OCELOT_STAT(RX_PMAC_UNICAST),
OCELOT_STAT(RX_PMAC_MULTICAST),
OCELOT_STAT(RX_PMAC_BROADCAST),
OCELOT_STAT(RX_PMAC_SHORTS),
OCELOT_STAT(RX_PMAC_FRAGMENTS),
OCELOT_STAT(RX_PMAC_JABBERS),
OCELOT_STAT(RX_PMAC_CRC_ALIGN_ERRS),
OCELOT_STAT(RX_PMAC_SYM_ERRS),
OCELOT_STAT(RX_PMAC_64),
OCELOT_STAT(RX_PMAC_65_127),
OCELOT_STAT(RX_PMAC_128_255),
OCELOT_STAT(RX_PMAC_256_511),
OCELOT_STAT(RX_PMAC_512_1023),
OCELOT_STAT(RX_PMAC_1024_1526),
OCELOT_STAT(RX_PMAC_1527_MAX),
OCELOT_STAT(RX_PMAC_PAUSE),
OCELOT_STAT(RX_PMAC_CONTROL),
OCELOT_STAT(RX_PMAC_LONGS),
OCELOT_STAT(TX_PMAC_OCTETS),
OCELOT_STAT(TX_PMAC_UNICAST),
OCELOT_STAT(TX_PMAC_MULTICAST),
OCELOT_STAT(TX_PMAC_BROADCAST),
OCELOT_STAT(TX_PMAC_PAUSE),
OCELOT_STAT(TX_PMAC_64),
OCELOT_STAT(TX_PMAC_65_127),
OCELOT_STAT(TX_PMAC_128_255),
OCELOT_STAT(TX_PMAC_256_511),
OCELOT_STAT(TX_PMAC_512_1023),
OCELOT_STAT(TX_PMAC_1024_1526),
OCELOT_STAT(TX_PMAC_1527_MAX),
};
static const struct ocelot_stat_layout *
ocelot_get_stats_layout(struct ocelot *ocelot)
{
if (ocelot->mm_supported)
return ocelot_mm_stats_layout;
return ocelot_stats_layout;
}
/* Read the counters from hardware and keep them in region->buf.
* Caller must hold &ocelot->stat_view_lock.
*/
static int ocelot_port_update_stats(struct ocelot *ocelot, int port)
{
struct ocelot_stats_region *region;
int err;
/* Configure the port to read the stats from */
ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), SYS_STAT_CFG);
list_for_each_entry(region, &ocelot->stats_regions, node) {
err = ocelot_bulk_read(ocelot, region->base, region->buf,
region->count);
if (err)
return err;
}
return 0;
}
/* Transfer the counters from region->buf to ocelot->stats.
* Caller must hold &ocelot->stat_view_lock and &ocelot->stats_lock.
*/
static void ocelot_port_transfer_stats(struct ocelot *ocelot, int port)
{
unsigned int idx = port * OCELOT_NUM_STATS;
struct ocelot_stats_region *region;
int j;
list_for_each_entry(region, &ocelot->stats_regions, node) {
for (j = 0; j < region->count; j++) {
u64 *stat = &ocelot->stats[idx + j];
u64 val = region->buf[j];
if (val < (*stat & U32_MAX))
*stat += (u64)1 << 32;
*stat = (*stat & ~(u64)U32_MAX) + val;
}
idx += region->count;
}
}
static void ocelot_check_stats_work(struct work_struct *work)
{
struct delayed_work *del_work = to_delayed_work(work);
struct ocelot *ocelot = container_of(del_work, struct ocelot,
stats_work);
int port, err;
mutex_lock(&ocelot->stat_view_lock);
for (port = 0; port < ocelot->num_phys_ports; port++) {
err = ocelot_port_update_stats(ocelot, port);
if (err)
break;
spin_lock(&ocelot->stats_lock);
ocelot_port_transfer_stats(ocelot, port);
spin_unlock(&ocelot->stats_lock);
}
if (!err && ocelot->ops->update_stats)
ocelot->ops->update_stats(ocelot);
mutex_unlock(&ocelot->stat_view_lock);
if (err)
dev_err(ocelot->dev, "Error %d updating ethtool stats\n", err);
queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
OCELOT_STATS_CHECK_DELAY);
}
void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data)
{
const struct ocelot_stat_layout *layout;
int i;
if (sset != ETH_SS_STATS)
return;
layout = ocelot_get_stats_layout(ocelot);
for (i = 0; i < OCELOT_NUM_STATS; i++) {
if (layout[i].name[0] == '\0')
continue;
memcpy(data, layout[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
}
EXPORT_SYMBOL(ocelot_get_strings);
/* Update ocelot->stats for the given port and run the given callback */
static void ocelot_port_stats_run(struct ocelot *ocelot, int port, void *priv,
void (*cb)(struct ocelot *ocelot, int port,
void *priv))
{
int err;
mutex_lock(&ocelot->stat_view_lock);
err = ocelot_port_update_stats(ocelot, port);
if (err) {
dev_err(ocelot->dev, "Failed to update port %d stats: %pe\n",
port, ERR_PTR(err));
goto out_unlock;
}
spin_lock(&ocelot->stats_lock);
ocelot_port_transfer_stats(ocelot, port);
cb(ocelot, port, priv);
spin_unlock(&ocelot->stats_lock);
out_unlock:
mutex_unlock(&ocelot->stat_view_lock);
}
int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset)
{
const struct ocelot_stat_layout *layout;
int i, num_stats = 0;
if (sset != ETH_SS_STATS)
return -EOPNOTSUPP;
layout = ocelot_get_stats_layout(ocelot);
for (i = 0; i < OCELOT_NUM_STATS; i++)
if (layout[i].name[0] != '\0')
num_stats++;
return num_stats;
}
EXPORT_SYMBOL(ocelot_get_sset_count);
static void ocelot_port_ethtool_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
const struct ocelot_stat_layout *layout;
u64 *data = priv;
int i;
layout = ocelot_get_stats_layout(ocelot);
/* Copy all supported counters */
for (i = 0; i < OCELOT_NUM_STATS; i++) {
int index = port * OCELOT_NUM_STATS + i;
if (layout[i].name[0] == '\0')
continue;
*data++ = ocelot->stats[index];
}
}
void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data)
{
ocelot_port_stats_run(ocelot, port, data, ocelot_port_ethtool_stats_cb);
}
EXPORT_SYMBOL(ocelot_get_ethtool_stats);
static void ocelot_port_pause_stats_cb(struct ocelot *ocelot, int port, void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_pause_stats *pause_stats = priv;
pause_stats->tx_pause_frames = s[OCELOT_STAT_TX_PAUSE];
pause_stats->rx_pause_frames = s[OCELOT_STAT_RX_PAUSE];
}
static void ocelot_port_pmac_pause_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_pause_stats *pause_stats = priv;
pause_stats->tx_pause_frames = s[OCELOT_STAT_TX_PMAC_PAUSE];
pause_stats->rx_pause_frames = s[OCELOT_STAT_RX_PMAC_PAUSE];
}
static void ocelot_port_mm_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_mm_stats *stats = priv;
stats->MACMergeFrameAssErrorCount = s[OCELOT_STAT_RX_ASSEMBLY_ERRS];
stats->MACMergeFrameSmdErrorCount = s[OCELOT_STAT_RX_SMD_ERRS];
stats->MACMergeFrameAssOkCount = s[OCELOT_STAT_RX_ASSEMBLY_OK];
stats->MACMergeFragCountRx = s[OCELOT_STAT_RX_MERGE_FRAGMENTS];
stats->MACMergeFragCountTx = s[OCELOT_STAT_TX_MERGE_FRAGMENTS];
stats->MACMergeHoldCount = s[OCELOT_STAT_TX_MM_HOLD];
}
void ocelot_port_get_pause_stats(struct ocelot *ocelot, int port,
struct ethtool_pause_stats *pause_stats)
{
struct net_device *dev;
switch (pause_stats->src) {
case ETHTOOL_MAC_STATS_SRC_EMAC:
ocelot_port_stats_run(ocelot, port, pause_stats,
ocelot_port_pause_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_PMAC:
if (ocelot->mm_supported)
ocelot_port_stats_run(ocelot, port, pause_stats,
ocelot_port_pmac_pause_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
dev = ocelot->ops->port_to_netdev(ocelot, port);
ethtool_aggregate_pause_stats(dev, pause_stats);
break;
}
}
EXPORT_SYMBOL_GPL(ocelot_port_get_pause_stats);
void ocelot_port_get_mm_stats(struct ocelot *ocelot, int port,
struct ethtool_mm_stats *stats)
{
if (!ocelot->mm_supported)
return;
ocelot_port_stats_run(ocelot, port, stats, ocelot_port_mm_stats_cb);
}
EXPORT_SYMBOL_GPL(ocelot_port_get_mm_stats);
static const struct ethtool_rmon_hist_range ocelot_rmon_ranges[] = {
{ 64, 64 },
{ 65, 127 },
{ 128, 255 },
{ 256, 511 },
{ 512, 1023 },
{ 1024, 1526 },
{ 1527, 65535 },
{},
};
static void ocelot_port_rmon_stats_cb(struct ocelot *ocelot, int port, void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_rmon_stats *rmon_stats = priv;
rmon_stats->undersize_pkts = s[OCELOT_STAT_RX_SHORTS];
rmon_stats->oversize_pkts = s[OCELOT_STAT_RX_LONGS];
rmon_stats->fragments = s[OCELOT_STAT_RX_FRAGMENTS];
rmon_stats->jabbers = s[OCELOT_STAT_RX_JABBERS];
rmon_stats->hist[0] = s[OCELOT_STAT_RX_64];
rmon_stats->hist[1] = s[OCELOT_STAT_RX_65_127];
rmon_stats->hist[2] = s[OCELOT_STAT_RX_128_255];
rmon_stats->hist[3] = s[OCELOT_STAT_RX_256_511];
rmon_stats->hist[4] = s[OCELOT_STAT_RX_512_1023];
rmon_stats->hist[5] = s[OCELOT_STAT_RX_1024_1526];
rmon_stats->hist[6] = s[OCELOT_STAT_RX_1527_MAX];
rmon_stats->hist_tx[0] = s[OCELOT_STAT_TX_64];
rmon_stats->hist_tx[1] = s[OCELOT_STAT_TX_65_127];
rmon_stats->hist_tx[2] = s[OCELOT_STAT_TX_128_255];
rmon_stats->hist_tx[3] = s[OCELOT_STAT_TX_128_255];
rmon_stats->hist_tx[4] = s[OCELOT_STAT_TX_256_511];
rmon_stats->hist_tx[5] = s[OCELOT_STAT_TX_512_1023];
rmon_stats->hist_tx[6] = s[OCELOT_STAT_TX_1024_1526];
}
static void ocelot_port_pmac_rmon_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_rmon_stats *rmon_stats = priv;
rmon_stats->undersize_pkts = s[OCELOT_STAT_RX_PMAC_SHORTS];
rmon_stats->oversize_pkts = s[OCELOT_STAT_RX_PMAC_LONGS];
rmon_stats->fragments = s[OCELOT_STAT_RX_PMAC_FRAGMENTS];
rmon_stats->jabbers = s[OCELOT_STAT_RX_PMAC_JABBERS];
rmon_stats->hist[0] = s[OCELOT_STAT_RX_PMAC_64];
rmon_stats->hist[1] = s[OCELOT_STAT_RX_PMAC_65_127];
rmon_stats->hist[2] = s[OCELOT_STAT_RX_PMAC_128_255];
rmon_stats->hist[3] = s[OCELOT_STAT_RX_PMAC_256_511];
rmon_stats->hist[4] = s[OCELOT_STAT_RX_PMAC_512_1023];
rmon_stats->hist[5] = s[OCELOT_STAT_RX_PMAC_1024_1526];
rmon_stats->hist[6] = s[OCELOT_STAT_RX_PMAC_1527_MAX];
rmon_stats->hist_tx[0] = s[OCELOT_STAT_TX_PMAC_64];
rmon_stats->hist_tx[1] = s[OCELOT_STAT_TX_PMAC_65_127];
rmon_stats->hist_tx[2] = s[OCELOT_STAT_TX_PMAC_128_255];
rmon_stats->hist_tx[3] = s[OCELOT_STAT_TX_PMAC_128_255];
rmon_stats->hist_tx[4] = s[OCELOT_STAT_TX_PMAC_256_511];
rmon_stats->hist_tx[5] = s[OCELOT_STAT_TX_PMAC_512_1023];
rmon_stats->hist_tx[6] = s[OCELOT_STAT_TX_PMAC_1024_1526];
}
void ocelot_port_get_rmon_stats(struct ocelot *ocelot, int port,
struct ethtool_rmon_stats *rmon_stats,
const struct ethtool_rmon_hist_range **ranges)
{
struct net_device *dev;
*ranges = ocelot_rmon_ranges;
switch (rmon_stats->src) {
case ETHTOOL_MAC_STATS_SRC_EMAC:
ocelot_port_stats_run(ocelot, port, rmon_stats,
ocelot_port_rmon_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_PMAC:
if (ocelot->mm_supported)
ocelot_port_stats_run(ocelot, port, rmon_stats,
ocelot_port_pmac_rmon_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
dev = ocelot->ops->port_to_netdev(ocelot, port);
ethtool_aggregate_rmon_stats(dev, rmon_stats);
break;
}
}
EXPORT_SYMBOL_GPL(ocelot_port_get_rmon_stats);
static void ocelot_port_ctrl_stats_cb(struct ocelot *ocelot, int port, void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_ctrl_stats *ctrl_stats = priv;
ctrl_stats->MACControlFramesReceived = s[OCELOT_STAT_RX_CONTROL];
}
static void ocelot_port_pmac_ctrl_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_ctrl_stats *ctrl_stats = priv;
ctrl_stats->MACControlFramesReceived = s[OCELOT_STAT_RX_PMAC_CONTROL];
}
void ocelot_port_get_eth_ctrl_stats(struct ocelot *ocelot, int port,
struct ethtool_eth_ctrl_stats *ctrl_stats)
{
struct net_device *dev;
switch (ctrl_stats->src) {
case ETHTOOL_MAC_STATS_SRC_EMAC:
ocelot_port_stats_run(ocelot, port, ctrl_stats,
ocelot_port_ctrl_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_PMAC:
if (ocelot->mm_supported)
ocelot_port_stats_run(ocelot, port, ctrl_stats,
ocelot_port_pmac_ctrl_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
dev = ocelot->ops->port_to_netdev(ocelot, port);
ethtool_aggregate_ctrl_stats(dev, ctrl_stats);
break;
}
}
EXPORT_SYMBOL_GPL(ocelot_port_get_eth_ctrl_stats);
static void ocelot_port_mac_stats_cb(struct ocelot *ocelot, int port, void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_mac_stats *mac_stats = priv;
mac_stats->OctetsTransmittedOK = s[OCELOT_STAT_TX_OCTETS];
mac_stats->FramesTransmittedOK = s[OCELOT_STAT_TX_64] +
s[OCELOT_STAT_TX_65_127] +
s[OCELOT_STAT_TX_128_255] +
s[OCELOT_STAT_TX_256_511] +
s[OCELOT_STAT_TX_512_1023] +
s[OCELOT_STAT_TX_1024_1526] +
s[OCELOT_STAT_TX_1527_MAX];
mac_stats->OctetsReceivedOK = s[OCELOT_STAT_RX_OCTETS];
mac_stats->FramesReceivedOK = s[OCELOT_STAT_RX_GREEN_PRIO_0] +
s[OCELOT_STAT_RX_GREEN_PRIO_1] +
s[OCELOT_STAT_RX_GREEN_PRIO_2] +
s[OCELOT_STAT_RX_GREEN_PRIO_3] +
s[OCELOT_STAT_RX_GREEN_PRIO_4] +
s[OCELOT_STAT_RX_GREEN_PRIO_5] +
s[OCELOT_STAT_RX_GREEN_PRIO_6] +
s[OCELOT_STAT_RX_GREEN_PRIO_7] +
s[OCELOT_STAT_RX_YELLOW_PRIO_0] +
s[OCELOT_STAT_RX_YELLOW_PRIO_1] +
s[OCELOT_STAT_RX_YELLOW_PRIO_2] +
s[OCELOT_STAT_RX_YELLOW_PRIO_3] +
s[OCELOT_STAT_RX_YELLOW_PRIO_4] +
s[OCELOT_STAT_RX_YELLOW_PRIO_5] +
s[OCELOT_STAT_RX_YELLOW_PRIO_6] +
s[OCELOT_STAT_RX_YELLOW_PRIO_7];
mac_stats->MulticastFramesXmittedOK = s[OCELOT_STAT_TX_MULTICAST];
mac_stats->BroadcastFramesXmittedOK = s[OCELOT_STAT_TX_BROADCAST];
mac_stats->MulticastFramesReceivedOK = s[OCELOT_STAT_RX_MULTICAST];
mac_stats->BroadcastFramesReceivedOK = s[OCELOT_STAT_RX_BROADCAST];
mac_stats->FrameTooLongErrors = s[OCELOT_STAT_RX_LONGS];
/* Sadly, C_RX_CRC is the sum of FCS and alignment errors, they are not
* counted individually.
*/
mac_stats->FrameCheckSequenceErrors = s[OCELOT_STAT_RX_CRC_ALIGN_ERRS];
mac_stats->AlignmentErrors = s[OCELOT_STAT_RX_CRC_ALIGN_ERRS];
}
static void ocelot_port_pmac_mac_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_mac_stats *mac_stats = priv;
mac_stats->OctetsTransmittedOK = s[OCELOT_STAT_TX_PMAC_OCTETS];
mac_stats->FramesTransmittedOK = s[OCELOT_STAT_TX_PMAC_64] +
s[OCELOT_STAT_TX_PMAC_65_127] +
s[OCELOT_STAT_TX_PMAC_128_255] +
s[OCELOT_STAT_TX_PMAC_256_511] +
s[OCELOT_STAT_TX_PMAC_512_1023] +
s[OCELOT_STAT_TX_PMAC_1024_1526] +
s[OCELOT_STAT_TX_PMAC_1527_MAX];
mac_stats->OctetsReceivedOK = s[OCELOT_STAT_RX_PMAC_OCTETS];
mac_stats->FramesReceivedOK = s[OCELOT_STAT_RX_PMAC_64] +
s[OCELOT_STAT_RX_PMAC_65_127] +
s[OCELOT_STAT_RX_PMAC_128_255] +
s[OCELOT_STAT_RX_PMAC_256_511] +
s[OCELOT_STAT_RX_PMAC_512_1023] +
s[OCELOT_STAT_RX_PMAC_1024_1526] +
s[OCELOT_STAT_RX_PMAC_1527_MAX];
mac_stats->MulticastFramesXmittedOK = s[OCELOT_STAT_TX_PMAC_MULTICAST];
mac_stats->BroadcastFramesXmittedOK = s[OCELOT_STAT_TX_PMAC_BROADCAST];
mac_stats->MulticastFramesReceivedOK = s[OCELOT_STAT_RX_PMAC_MULTICAST];
mac_stats->BroadcastFramesReceivedOK = s[OCELOT_STAT_RX_PMAC_BROADCAST];
mac_stats->FrameTooLongErrors = s[OCELOT_STAT_RX_PMAC_LONGS];
/* Sadly, C_RX_CRC is the sum of FCS and alignment errors, they are not
* counted individually.
*/
mac_stats->FrameCheckSequenceErrors = s[OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS];
mac_stats->AlignmentErrors = s[OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS];
}
void ocelot_port_get_eth_mac_stats(struct ocelot *ocelot, int port,
struct ethtool_eth_mac_stats *mac_stats)
{
struct net_device *dev;
switch (mac_stats->src) {
case ETHTOOL_MAC_STATS_SRC_EMAC:
ocelot_port_stats_run(ocelot, port, mac_stats,
ocelot_port_mac_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_PMAC:
if (ocelot->mm_supported)
ocelot_port_stats_run(ocelot, port, mac_stats,
ocelot_port_pmac_mac_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
dev = ocelot->ops->port_to_netdev(ocelot, port);
ethtool_aggregate_mac_stats(dev, mac_stats);
break;
}
}
EXPORT_SYMBOL_GPL(ocelot_port_get_eth_mac_stats);
static void ocelot_port_phy_stats_cb(struct ocelot *ocelot, int port, void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_phy_stats *phy_stats = priv;
phy_stats->SymbolErrorDuringCarrier = s[OCELOT_STAT_RX_SYM_ERRS];
}
static void ocelot_port_pmac_phy_stats_cb(struct ocelot *ocelot, int port,
void *priv)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
struct ethtool_eth_phy_stats *phy_stats = priv;
phy_stats->SymbolErrorDuringCarrier = s[OCELOT_STAT_RX_PMAC_SYM_ERRS];
}
void ocelot_port_get_eth_phy_stats(struct ocelot *ocelot, int port,
struct ethtool_eth_phy_stats *phy_stats)
{
struct net_device *dev;
switch (phy_stats->src) {
case ETHTOOL_MAC_STATS_SRC_EMAC:
ocelot_port_stats_run(ocelot, port, phy_stats,
ocelot_port_phy_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_PMAC:
if (ocelot->mm_supported)
ocelot_port_stats_run(ocelot, port, phy_stats,
ocelot_port_pmac_phy_stats_cb);
break;
case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
dev = ocelot->ops->port_to_netdev(ocelot, port);
ethtool_aggregate_phy_stats(dev, phy_stats);
break;
}
}
EXPORT_SYMBOL_GPL(ocelot_port_get_eth_phy_stats);
void ocelot_port_get_stats64(struct ocelot *ocelot, int port,
struct rtnl_link_stats64 *stats)
{
u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
spin_lock(&ocelot->stats_lock);
/* Get Rx stats */
stats->rx_bytes = s[OCELOT_STAT_RX_OCTETS];
stats->rx_packets = s[OCELOT_STAT_RX_SHORTS] +
s[OCELOT_STAT_RX_FRAGMENTS] +
s[OCELOT_STAT_RX_JABBERS] +
s[OCELOT_STAT_RX_LONGS] +
s[OCELOT_STAT_RX_64] +
s[OCELOT_STAT_RX_65_127] +
s[OCELOT_STAT_RX_128_255] +
s[OCELOT_STAT_RX_256_511] +
s[OCELOT_STAT_RX_512_1023] +
s[OCELOT_STAT_RX_1024_1526] +
s[OCELOT_STAT_RX_1527_MAX];
stats->multicast = s[OCELOT_STAT_RX_MULTICAST];
stats->rx_missed_errors = s[OCELOT_STAT_DROP_TAIL];
stats->rx_dropped = s[OCELOT_STAT_RX_RED_PRIO_0] +
s[OCELOT_STAT_RX_RED_PRIO_1] +
s[OCELOT_STAT_RX_RED_PRIO_2] +
s[OCELOT_STAT_RX_RED_PRIO_3] +
s[OCELOT_STAT_RX_RED_PRIO_4] +
s[OCELOT_STAT_RX_RED_PRIO_5] +
s[OCELOT_STAT_RX_RED_PRIO_6] +
s[OCELOT_STAT_RX_RED_PRIO_7] +
s[OCELOT_STAT_DROP_LOCAL] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_0] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_1] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_2] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_3] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_4] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_5] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_6] +
s[OCELOT_STAT_DROP_YELLOW_PRIO_7] +
s[OCELOT_STAT_DROP_GREEN_PRIO_0] +
s[OCELOT_STAT_DROP_GREEN_PRIO_1] +
s[OCELOT_STAT_DROP_GREEN_PRIO_2] +
s[OCELOT_STAT_DROP_GREEN_PRIO_3] +
s[OCELOT_STAT_DROP_GREEN_PRIO_4] +
s[OCELOT_STAT_DROP_GREEN_PRIO_5] +
s[OCELOT_STAT_DROP_GREEN_PRIO_6] +
s[OCELOT_STAT_DROP_GREEN_PRIO_7];
/* Get Tx stats */
stats->tx_bytes = s[OCELOT_STAT_TX_OCTETS];
stats->tx_packets = s[OCELOT_STAT_TX_64] +
s[OCELOT_STAT_TX_65_127] +
s[OCELOT_STAT_TX_128_255] +
s[OCELOT_STAT_TX_256_511] +
s[OCELOT_STAT_TX_512_1023] +
s[OCELOT_STAT_TX_1024_1526] +
s[OCELOT_STAT_TX_1527_MAX];
stats->tx_dropped = s[OCELOT_STAT_TX_DROPS] +
s[OCELOT_STAT_TX_AGED];
stats->collisions = s[OCELOT_STAT_TX_COLLISION];
spin_unlock(&ocelot->stats_lock);
}
EXPORT_SYMBOL(ocelot_port_get_stats64);
static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
{
struct ocelot_stats_region *region = NULL;
const struct ocelot_stat_layout *layout;
unsigned int last = 0;
int i;
INIT_LIST_HEAD(&ocelot->stats_regions);
layout = ocelot_get_stats_layout(ocelot);
for (i = 0; i < OCELOT_NUM_STATS; i++) {
if (!layout[i].reg)
continue;
if (region && layout[i].reg == last + 4) {
region->count++;
} else {
region = devm_kzalloc(ocelot->dev, sizeof(*region),
GFP_KERNEL);
if (!region)
return -ENOMEM;
/* enum ocelot_stat must be kept sorted in the same
* order as layout[i].reg in order to have efficient
* bulking
*/
WARN_ON(last >= layout[i].reg);
region->base = layout[i].reg;
region->count = 1;
list_add_tail(&region->node, &ocelot->stats_regions);
}
last = layout[i].reg;
}
list_for_each_entry(region, &ocelot->stats_regions, node) {
region->buf = devm_kcalloc(ocelot->dev, region->count,
sizeof(*region->buf), GFP_KERNEL);
if (!region->buf)
return -ENOMEM;
}
return 0;
}
int ocelot_stats_init(struct ocelot *ocelot)
{
char queue_name[32];
int ret;
ocelot->stats = devm_kcalloc(ocelot->dev,
ocelot->num_phys_ports * OCELOT_NUM_STATS,
sizeof(u64), GFP_KERNEL);
if (!ocelot->stats)
return -ENOMEM;
snprintf(queue_name, sizeof(queue_name), "%s-stats",
dev_name(ocelot->dev));
ocelot->stats_queue = create_singlethread_workqueue(queue_name);
if (!ocelot->stats_queue)
return -ENOMEM;
spin_lock_init(&ocelot->stats_lock);
mutex_init(&ocelot->stat_view_lock);
ret = ocelot_prepare_stats_regions(ocelot);
if (ret) {
destroy_workqueue(ocelot->stats_queue);
return ret;
}
INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work);
queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
OCELOT_STATS_CHECK_DELAY);
return 0;
}
void ocelot_stats_deinit(struct ocelot *ocelot)
{
cancel_delayed_work(&ocelot->stats_work);
destroy_workqueue(ocelot->stats_queue);
}