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net: ethernet: mtk_eth_soc: introduce xdp ethtool counters

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Report xdp 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 09:19:38 +02:00 committed by David S. Miller
parent 7c26c20da5
commit 916a6ee836
2 changed files with 36 additions and 2 deletions
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26
drivers/net/ethernet/mediatek/mtk_eth_soc.c
View file

@ -34,6 +34,10 @@ MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
#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[] = {
@ -1502,6 +1513,9 @@ static void mtk_rx_put_buff(struct mtk_rx_ring *ring, void *data, bool napi)
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;
@ -1514,13 +1528,16 @@ static u32 mtk_xdp_run(struct mtk_eth *eth, struct mtk_rx_ring *ring,
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(dev, prog, act);
fallthrough;
@ -1533,6 +1550,11 @@ static u32 mtk_xdp_run(struct mtk_eth *eth, struct mtk_rx_ring *ring,
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();

12
drivers/net/ethernet/mediatek/mtk_eth_soc.h
View file

@ -570,6 +570,16 @@ 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
@ -593,6 +603,8 @@ 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;