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From 916a6ee836d6b7b8ef1ed5f0515e256ca60e9968 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Fri, 22 Jul 2022 09:19:38 +0200
Subject: [PATCH] net: ethernet: mtk_eth_soc: introduce xdp ethtool counters
Report xdp stats through ethtool
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 26 +++++++++++++++++++--
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++++++++++
2 files changed, 36 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -34,6 +34,10 @@ MODULE_PARM_DESC(msg_level, "Message lev
#define MTK_ETHTOOL_STAT(x) { #x, \
offsetof(struct mtk_hw_stats, x) / sizeof(u64) }
+#define MTK_ETHTOOL_XDP_STAT(x) { #x, \
+ offsetof(struct mtk_hw_stats, xdp_stats.x) / \
+ sizeof(u64) }
+
static const struct mtk_reg_map mtk_reg_map = {
.tx_irq_mask = 0x1a1c,
.tx_irq_status = 0x1a18,
@@ -141,6 +145,13 @@ static const struct mtk_ethtool_stats {
MTK_ETHTOOL_STAT(rx_long_errors),
MTK_ETHTOOL_STAT(rx_checksum_errors),
MTK_ETHTOOL_STAT(rx_flow_control_packets),
+ MTK_ETHTOOL_XDP_STAT(rx_xdp_redirect),
+ MTK_ETHTOOL_XDP_STAT(rx_xdp_pass),
+ MTK_ETHTOOL_XDP_STAT(rx_xdp_drop),
+ MTK_ETHTOOL_XDP_STAT(rx_xdp_tx),
+ MTK_ETHTOOL_XDP_STAT(rx_xdp_tx_errors),
+ MTK_ETHTOOL_XDP_STAT(tx_xdp_xmit),
+ MTK_ETHTOOL_XDP_STAT(tx_xdp_xmit_errors),
};
static const char * const mtk_clks_source_name[] = {
@@ -1459,6 +1470,9 @@ static void mtk_rx_put_buff(struct mtk_r
static u32 mtk_xdp_run(struct mtk_eth *eth, struct mtk_rx_ring *ring,
struct xdp_buff *xdp, struct net_device *dev)
{
+ struct mtk_mac *mac = netdev_priv(dev);
+ struct mtk_hw_stats *hw_stats = mac->hw_stats;
+ u64 *count = &hw_stats->xdp_stats.rx_xdp_drop;
struct bpf_prog *prog;
u32 act = XDP_PASS;
@@ -1471,13 +1485,16 @@ static u32 mtk_xdp_run(struct mtk_eth *e
act = bpf_prog_run_xdp(prog, xdp);
switch (act) {
case XDP_PASS:
- goto out;
+ count = &hw_stats->xdp_stats.rx_xdp_pass;
+ goto update_stats;
case XDP_REDIRECT:
if (unlikely(xdp_do_redirect(dev, xdp, prog))) {
act = XDP_DROP;
break;
}
- goto out;
+
+ count = &hw_stats->xdp_stats.rx_xdp_redirect;
+ goto update_stats;
default:
bpf_warn_invalid_xdp_action(act);
fallthrough;
@@ -1490,6 +1507,11 @@ static u32 mtk_xdp_run(struct mtk_eth *e
page_pool_put_full_page(ring->page_pool,
virt_to_head_page(xdp->data), true);
+
+update_stats:
+ u64_stats_update_begin(&hw_stats->syncp);
+ *count = *count + 1;
+ u64_stats_update_end(&hw_stats->syncp);
out:
rcu_read_unlock();
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -568,6 +568,16 @@ struct mtk_tx_dma_v2 {
struct mtk_eth;
struct mtk_mac;
+struct mtk_xdp_stats {
+ u64 rx_xdp_redirect;
+ u64 rx_xdp_pass;
+ u64 rx_xdp_drop;
+ u64 rx_xdp_tx;
+ u64 rx_xdp_tx_errors;
+ u64 tx_xdp_xmit;
+ u64 tx_xdp_xmit_errors;
+};
+
/* struct mtk_hw_stats - the structure that holds the traffic statistics.
* @stats_lock: make sure that stats operations are atomic
* @reg_offset: the status register offset of the SoC
@@ -591,6 +601,8 @@ struct mtk_hw_stats {
u64 rx_checksum_errors;
u64 rx_flow_control_packets;
+ struct mtk_xdp_stats xdp_stats;
+
spinlock_t stats_lock;
u32 reg_offset;
struct u64_stats_sync syncp;
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