Re: [PATCH net-next] net: ethernet: mtk_eth_soc: support per-flow accounting on MT7988

From: kernel test robot
Date: Sat Jul 29 2023 - 11:15:22 EST

Hi Daniel,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Golle/net-ethernet-mtk_eth_soc-support-per-flow-accounting-on-MT7988/20230729-215634
base: net-next/main
patch link: https://lore.kernel.org/r/801c89963e95e5ce8f1ab7dbda894dd9da0125cc.1690638748.git.daniel%40makrotopia.org
patch subject: [PATCH net-next] net: ethernet: mtk_eth_soc: support per-flow accounting on MT7988
config: hexagon-randconfig-r023-20230729 (https://download.01.org/0day-ci/archive/20230729/202307292316.uxGTiSPC-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230729/202307292316.uxGTiSPC-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307292316.uxGTiSPC-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from drivers/net/ethernet/mediatek/mtk_ppe.c:5:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/net/ethernet/mediatek/mtk_ppe.c:5:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/net/ethernet/mediatek/mtk_ppe.c:5:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
>> drivers/net/ethernet/mediatek/mtk_ppe.c:112:3: error: use of undeclared identifier 'bytes_cnt_low'; did you mean 'byte_cnt_low'?
112 | bytes_cnt_low = cnt_r0;
| ^~~~~~~~~~~~~
| byte_cnt_low
drivers/net/ethernet/mediatek/mtk_ppe.c:95:6: note: 'byte_cnt_low' declared here
95 | u32 byte_cnt_low, byte_cnt_high, pkt_cnt_low, pkt_cnt_high;
| ^
>> drivers/net/ethernet/mediatek/mtk_ppe.c:113:3: error: use of undeclared identifier 'bytes_cnt_high'; did you mean 'byte_cnt_high'?
113 | bytes_cnt_high = cnt_r1;
| ^~~~~~~~~~~~~~
| byte_cnt_high
drivers/net/ethernet/mediatek/mtk_ppe.c:95:20: note: 'byte_cnt_high' declared here
95 | u32 byte_cnt_low, byte_cnt_high, pkt_cnt_low, pkt_cnt_high;
| ^
6 warnings and 2 errors generated.


vim +112 drivers/net/ethernet/mediatek/mtk_ppe.c

92
93 static int mtk_mib_entry_read(struct mtk_ppe *ppe, u16 index, u64 *bytes, u64 *packets)
94 {
95 u32 byte_cnt_low, byte_cnt_high, pkt_cnt_low, pkt_cnt_high;
96 u32 val, cnt_r0, cnt_r1, cnt_r2;
97 int ret;
98
99 val = FIELD_PREP(MTK_PPE_MIB_SER_CR_ADDR, index) | MTK_PPE_MIB_SER_CR_ST;
100 ppe_w32(ppe, MTK_PPE_MIB_SER_CR, val);
101
102 ret = mtk_ppe_mib_wait_busy(ppe);
103 if (ret)
104 return ret;
105
106 cnt_r0 = readl(ppe->base + MTK_PPE_MIB_SER_R0);
107 cnt_r1 = readl(ppe->base + MTK_PPE_MIB_SER_R1);
108 cnt_r2 = readl(ppe->base + MTK_PPE_MIB_SER_R2);
109
110 if (mtk_is_netsys_v3_or_greater(ppe->eth)) {
111 /* 64 bit for each counter */
> 112 bytes_cnt_low = cnt_r0;
> 113 bytes_cnt_high = cnt_r1;
114 pkt_cnt_low = cnt_r2;
115 pkt_cnt_high = readl(ppe->base + MTK_PPE_MIB_SER_R3);
116 } else {
117 /* 48 bit for each counter */
118 byte_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW, cnt_r0);
119 byte_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH, cnt_r1);
120 pkt_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R1_PKT_CNT_LOW, cnt_r1);
121 pkt_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH, cnt_r2);
122 }
123
124 *bytes = ((u64)byte_cnt_high << 32) | byte_cnt_low;
125 *packets = (pkt_cnt_high << 16) | pkt_cnt_low;
126
127 return 0;
128 }
129

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki