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net: hibmcge: add support for tracepoint to dump some fields of rx_desc

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add support for tracepoint to dump some fields of rx_desc

Signed-off-by: Tao Lan <lantao5@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Link: https://patch.msgid.link/20251122034657.3373143-2-shaojijie@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Tao Lan
2025-11-22 11:46:55 +08:00
committed by Jakub Kicinski
parent 37a96c2009
commit 91f3305b97
4 changed files with 93 additions and 0 deletions
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1
drivers/net/ethernet/hisilicon/hibmcge/Makefile
View File

@@ -3,6 +3,7 @@
# Makefile for the HISILICON BMC GE network device drivers.
#
ccflags-y += -I$(src)
obj-$(CONFIG_HIBMCGE) += hibmcge.o
hibmcge-objs = hbg_main.o hbg_hw.o hbg_mdio.o hbg_irq.o hbg_txrx.o hbg_ethtool.o \

4
drivers/net/ethernet/hisilicon/hibmcge/hbg_reg.h
View File

@@ -252,6 +252,8 @@ struct hbg_rx_desc {
#define HBG_RX_DESC_W2_PKT_LEN_M GENMASK(31, 16)
#define HBG_RX_DESC_W2_PORT_NUM_M GENMASK(15, 12)
#define HBG_RX_DESC_W3_IP_OFFSET_M GENMASK(23, 16)
#define HBG_RX_DESC_W3_VLAN_M GENMASK(15, 0)
#define HBG_RX_DESC_W4_IP_TCP_UDP_M GENMASK(31, 30)
#define HBG_RX_DESC_W4_IPSEC_B BIT(29)
#define HBG_RX_DESC_W4_IP_VERSION_B BIT(28)
@@ -269,6 +271,8 @@ struct hbg_rx_desc {
#define HBG_RX_DESC_W4_L3_ERR_CODE_M GENMASK(12, 9)
#define HBG_RX_DESC_W4_L2_ERR_B BIT(8)
#define HBG_RX_DESC_W4_IDX_MATCH_B BIT(7)
#define HBG_RX_DESC_W4_PARSE_MODE_M GENMASK(6, 5)
#define HBG_RX_DESC_W5_VALID_SIZE_M GENMASK(15, 0)
enum hbg_l3_err_code {
HBG_L3_OK = 0,

84
drivers/net/ethernet/hisilicon/hibmcge/hbg_trace.h Normal file
View File

@@ -0,0 +1,84 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (c) 2025 Hisilicon Limited. */
/* This must be outside ifdef _HBG_TRACE_H */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM hibmcge
#if !defined(_HBG_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
#define _HBG_TRACE_H_
#include <linux/bitfield.h>
#include <linux/pci.h>
#include <linux/tracepoint.h>
#include <linux/types.h>
#include "hbg_reg.h"
TRACE_EVENT(hbg_rx_desc,
TP_PROTO(struct hbg_priv *priv, u32 index,
struct hbg_rx_desc *rx_desc),
TP_ARGS(priv, index, rx_desc),
TP_STRUCT__entry(__field(u32, index)
__field(u8, port_num)
__field(u8, ip_offset)
__field(u8, parse_mode)
__field(u8, l4_error_code)
__field(u8, l3_error_code)
__field(u8, l2_error_code)
__field(u16, packet_len)
__field(u16, valid_size)
__field(u16, vlan)
__string(pciname, pci_name(priv->pdev))
__string(devname, priv->netdev->name)
),
TP_fast_assign(__entry->index = index,
__entry->packet_len =
FIELD_GET(HBG_RX_DESC_W2_PKT_LEN_M,
rx_desc->word2);
__entry->port_num =
FIELD_GET(HBG_RX_DESC_W2_PORT_NUM_M,
rx_desc->word2);
__entry->ip_offset =
FIELD_GET(HBG_RX_DESC_W3_IP_OFFSET_M,
rx_desc->word3);
__entry->vlan =
FIELD_GET(HBG_RX_DESC_W3_VLAN_M,
rx_desc->word3);
__entry->parse_mode =
FIELD_GET(HBG_RX_DESC_W4_PARSE_MODE_M,
rx_desc->word4);
__entry->l4_error_code =
FIELD_GET(HBG_RX_DESC_W4_L4_ERR_CODE_M,
rx_desc->word4);
__entry->l3_error_code =
FIELD_GET(HBG_RX_DESC_W4_L3_ERR_CODE_M,
rx_desc->word4);
__entry->l2_error_code =
FIELD_GET(HBG_RX_DESC_W4_L2_ERR_B,
rx_desc->word4);
__entry->valid_size =
FIELD_GET(HBG_RX_DESC_W5_VALID_SIZE_M,
rx_desc->word5);
__assign_str(pciname);
__assign_str(devname);
),
TP_printk("%s %s index:%u, port num:%u, len:%u, valid size:%u, ip_offset:%u, vlan:0x%04x, parse mode:%u, l4_err:0x%x, l3_err:0x%x, l2_err:0x%x",
__get_str(pciname), __get_str(devname), __entry->index,
__entry->port_num, __entry->packet_len,
__entry->valid_size, __entry->ip_offset, __entry->vlan,
__entry->parse_mode, __entry->l4_error_code,
__entry->l3_error_code, __entry->l2_error_code
)
);
#endif /* _HBG_TRACE_H_ */
/* This must be outside ifdef _HBG_TRACE_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE hbg_trace
#include <trace/define_trace.h>

4
drivers/net/ethernet/hisilicon/hibmcge/hbg_txrx.c
View File

@@ -7,6 +7,9 @@
#include "hbg_reg.h"
#include "hbg_txrx.h"
#define CREATE_TRACE_POINTS
#include "hbg_trace.h"
#define netdev_get_tx_ring(netdev) \
(&(((struct hbg_priv *)netdev_priv(netdev))->tx_ring))
@@ -429,6 +432,7 @@ static int hbg_napi_rx_poll(struct napi_struct *napi, int budget)
break;
rx_desc = (struct hbg_rx_desc *)buffer->skb->data;
pkt_len = FIELD_GET(HBG_RX_DESC_W2_PKT_LEN_M, rx_desc->word2);
trace_hbg_rx_desc(priv, ring->ntc, rx_desc);
if (unlikely(!hbg_rx_pkt_check(priv, rx_desc, buffer->skb))) {
hbg_buffer_free(buffer);