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net: mscc: ocelot: hide access to ocelot_stats_layout behind a helper

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Some hardware instances of the ocelot driver support the MAC Merge
layer, which gives access to an extra preemptible MAC. This has
implications upon the statistics. There will be a stats layout when MM
isn't supported, and a different one when it is.
The ocelot_stats_layout() helper will return the correct one.
In preparation of that, refactor the existing code to use this helper.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2023-01-19 14:27:02 +02:00 committed by David S. Miller
parent 1a733bbddf
commit 497eea9f8e
1 changed files with 29 additions and 11 deletions
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40
drivers/net/ethernet/mscc/ocelot_stats.c
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@ -228,6 +228,12 @@ static const struct ocelot_stat_layout ocelot_stats_layout[OCELOT_NUM_STATS] = {
OCELOT_COMMON_STATS,
};
static const struct ocelot_stat_layout *
ocelot_get_stats_layout(struct ocelot *ocelot)
{
return ocelot_stats_layout;
}
/* Read the counters from hardware and keep them in region->buf.
* Caller must hold &ocelot->stat_view_lock.
*/
@ -306,16 +312,19 @@ static void ocelot_check_stats_work(struct work_struct *work)
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 (ocelot_stats_layout[i].name[0] == '\0')
if (layout[i].name[0] == '\0')
continue;
memcpy(data, ocelot_stats_layout[i].name, ETH_GSTRING_LEN);
memcpy(data, layout[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
}
@ -350,13 +359,16 @@ out_unlock:
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 (ocelot_stats_layout[i].name[0] != '\0')
if (layout[i].name[0] != '\0')
num_stats++;
return num_stats;
@ -366,14 +378,17 @@ 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 (ocelot_stats_layout[i].name[0] == '\0')
if (layout[i].name[0] == '\0')
continue;
*data++ = ocelot->stats[index];
@ -602,16 +617,19 @@ 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 (!ocelot_stats_layout[i].reg)
if (!layout[i].reg)
continue;
if (region && ocelot_stats_layout[i].reg == last + 4) {
if (region && layout[i].reg == last + 4) {
region->count++;
} else {
region = devm_kzalloc(ocelot->dev, sizeof(*region),
@ -620,17 +638,17 @@ static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
return -ENOMEM;
/* enum ocelot_stat must be kept sorted in the same
* order as ocelot_stats_layout[i].reg in order to have
* efficient bulking
* order as layout[i].reg in order to have efficient
* bulking
*/
WARN_ON(last >= ocelot_stats_layout[i].reg);
WARN_ON(last >= layout[i].reg);
region->base = ocelot_stats_layout[i].reg;
region->base = layout[i].reg;
region->count = 1;
list_add_tail(&region->node, &ocelot->stats_regions);
}
last = ocelot_stats_layout[i].reg;
last = layout[i].reg;
}
list_for_each_entry(region, &ocelot->stats_regions, node) {