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net: ethernet: mtk_eth_soc: add support for page_pool_get_stats

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Introduce support for the page_pool stats API into mtk_eth_soc driver.
Report page_pool stats through ethtool.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Bianconi 2022-07-22 09:19:40 +02:00 committed by David S. Miller
parent 5886d26fd2
commit 84b9cd3890
2 changed files with 35 additions and 3 deletions
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1
drivers/net/ethernet/mediatek/Kconfig
View File

@ -18,6 +18,7 @@ config NET_MEDIATEK_SOC
select PHYLINK
select DIMLIB
select PAGE_POOL
select PAGE_POOL_STATS
help
This driver supports the gigabit ethernet MACs in the
MediaTek SoC family.

37
drivers/net/ethernet/mediatek/mtk_eth_soc.c
View File

@ -3528,11 +3528,18 @@ static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data)
int i;
switch (stringset) {
case ETH_SS_STATS:
case ETH_SS_STATS: {
struct mtk_mac *mac = netdev_priv(dev);
for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) {
memcpy(data, mtk_ethtool_stats[i].str, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
if (mtk_page_pool_enabled(mac->hw))
page_pool_ethtool_stats_get_strings(data);
break;
}
default:
break;
}
}
@ -3540,13 +3547,35 @@ static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data)
static int mtk_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return ARRAY_SIZE(mtk_ethtool_stats);
case ETH_SS_STATS: {
int count = ARRAY_SIZE(mtk_ethtool_stats);
struct mtk_mac *mac = netdev_priv(dev);
if (mtk_page_pool_enabled(mac->hw))
count += page_pool_ethtool_stats_get_count();
return count;
}
default:
return -EOPNOTSUPP;
}
}
static void mtk_ethtool_pp_stats(struct mtk_eth *eth, u64 *data)
{
struct page_pool_stats stats = {};
int i;
for (i = 0; i < ARRAY_SIZE(eth->rx_ring); i++) {
struct mtk_rx_ring *ring = &eth->rx_ring[i];
if (!ring->page_pool)
continue;
page_pool_get_stats(ring->page_pool, &stats);
}
page_pool_ethtool_stats_get(data, &stats);
}
static void mtk_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
@ -3574,6 +3603,8 @@ static void mtk_get_ethtool_stats(struct net_device *dev,
for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++)
*data_dst++ = *(data_src + mtk_ethtool_stats[i].offset);
if (mtk_page_pool_enabled(mac->hw))
mtk_ethtool_pp_stats(mac->hw, data_dst);
} while (u64_stats_fetch_retry_irq(&hwstats->syncp, start));
}