Commit 84b9cd38 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by David S. Miller
Browse files

net: ethernet: mtk_eth_soc: add support for page_pool_get_stats 



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

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5886d26f

drivers/net/ethernet/mediatek/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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.

drivers/net/ethernet/mediatek/mtk_eth_soc.c

+34 −3
Original line number Diff line number Diff line
@@ -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));

}