[PATCH v2 2/7] ethdev: add telemetry cmd for registers

[Ferruh Yigit]

On 2/5/2024 10:51 AM, Jie Hai wrote:
> This patch adds a telemetry command for registers dump,
> and supports get registers with specified names.
> The length of the string exported by telemetry is limited
> by MAX_OUTPUT_LEN. Therefore, the filter should be more
> precise.
> 
> An example usage is shown below:
> --> /ethdev/regs,0,INTR
> {
>   "/ethdev/regs": {
>     "registers_length": 318,
>     "registers_width": 4,
>     "register_offset": "0x0",
>     "version": "0x1140011",
>     "group_0": {
>       "HNS3_CMDQ_INTR_STS_REG": "0x0",
>       "HNS3_CMDQ_INTR_EN_REG": "0x2",
>       "HNS3_CMDQ_INTR_GEN_REG": "0x0",
>       "queue_0_HNS3_TQP_INTR_CTRL_REG": "0x0",
>       "queue_0_HNS3_TQP_INTR_GL0_REG": "0xa",
>       "queue_0_HNS3_TQP_INTR_GL1_REG": "0xa",
>       "queue_0_HNS3_TQP_INTR_GL2_REG": "0x0",
>       ...
>       },
>     "group_1": {
>         ...
>     },
>     ...
> }
> 

What is the intention of 'RTE_TEL_MAX_DICT_ENTRIES' and grouping above?

> or as below if the number of registers not exceed the
> RTE_TEL_MAX_DICT_ENTRIES:
> --> /ethdev/regs,0,ppp
> {
>   "/ethdev/regs": {
>     "registers_length": 156,
>     "registers_width": 4,
>     "register_offset": "0x0",
>     "version": "0x1140011",
>     "ppp_key_drop_num": "0x0",
>     "ppp_rlt_drop_num": "0x0",
>     "ssu_ppp_mac_key_num_l": "0x1",
>     "ssu_ppp_mac_key_num_h": "0x0",
>     "ssu_ppp_host_key_num_l": "0x1",
>     "ssu_ppp_host_key_num_h": "0x0",
>     "ppp_ssu_mac_rlt_num_l": "0x1",
>         ...
>    }
> }
> 
> Signed-off-by: Jie Hai <haijie1 at huawei.com>