[RESEND,v7,3/3] ring: add telemetry cmd for ring info

  This patch supports dump of ring information by its name.
An example using this command is shown below:

--> /ring/info,MP_mb_pool_0
{
  "/ring/info": {
    "name": "MP_mb_pool_0",
    "socket": 0,
    "flags": "0x0",
    "producer_type": "MP",
    "consumer_type": "MC",
    "size": 262144,
    "mask": "0x3ffff",
    "capacity": 262143,
    "used_count": 153197,
    "mz_name": "RG_MP_mb_pool_0",
    "mz_len": 2097536,
    "mz_hugepage_sz": 1073741824,
    "mz_socket_id": 0,
    "mz_flags": "0x0"
  }
}

Signed-off-by: Jie Hai <haijie1@huawei.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
Acked-by: Huisong Li <lihuisong@huawei.com>
Acked-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
---
 lib/ring/rte_ring.c | 95 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
  

Acked-by: Huisong Li <lihuisong@huawei.com>

在 2023/11/9 18:20, Jie Hai 写道:
> This patch supports dump of ring information by its name.
> An example using this command is shown below:
>
> --> /ring/info,MP_mb_pool_0
> {
>    "/ring/info": {
>      "name": "MP_mb_pool_0",
>      "socket": 0,
>      "flags": "0x0",
>      "producer_type": "MP",
>      "consumer_type": "MC",
>      "size": 262144,
>      "mask": "0x3ffff",
>      "capacity": 262143,
>      "used_count": 153197,
>      "mz_name": "RG_MP_mb_pool_0",
>      "mz_len": 2097536,
>      "mz_hugepage_sz": 1073741824,
>      "mz_socket_id": 0,
>      "mz_flags": "0x0"
>    }
> }
>
> Signed-off-by: Jie Hai <haijie1@huawei.com>
> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
> Acked-by: Huisong Li <lihuisong@huawei.com>
> Acked-by: Chengwen Feng <fengchengwen@huawei.com>
> Acked-by: Morten Brørup <mb@smartsharesystems.com>
> ---
>   lib/ring/rte_ring.c | 95 +++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 95 insertions(+)
>
> diff --git a/lib/ring/rte_ring.c b/lib/ring/rte_ring.c
> index 6a10280fb093..5ee15037548e 100644
> --- a/lib/ring/rte_ring.c
> +++ b/lib/ring/rte_ring.c
> @@ -453,8 +453,103 @@ ring_handle_list(const char *cmd __rte_unused,
>   	return 0;
>   }
>   
> +static const char *
> +ring_prod_sync_type_to_name(struct rte_ring *r)
> +{
> +	switch (r->prod.sync_type) {
> +	case RTE_RING_SYNC_MT:
> +		return "MP";
> +	case RTE_RING_SYNC_ST:
> +		return "SP";
> +	case RTE_RING_SYNC_MT_RTS:
> +		return "MP_RTS";
> +	case RTE_RING_SYNC_MT_HTS:
> +		return "MP_HTS";
> +	default:
> +		return "Unknown";
> +	}
> +}
> +
> +static const char *
> +ring_cons_sync_type_to_name(struct rte_ring *r)
> +{
> +	switch (r->cons.sync_type) {
> +	case RTE_RING_SYNC_MT:
> +		return "MC";
> +	case RTE_RING_SYNC_ST:
> +		return "SC";
> +	case RTE_RING_SYNC_MT_RTS:
> +		return "MC_RTS";
> +	case RTE_RING_SYNC_MT_HTS:
> +		return "MC_HTS";
> +	default:
> +		return "Unknown";
> +	}
> +}
> +
> +struct ring_info_cb_arg {
> +	char *ring_name;
> +	struct rte_tel_data *d;
> +};
> +
> +static void
> +ring_info_cb(struct rte_ring *r, void *arg)
> +{
> +	struct ring_info_cb_arg *ring_arg = (struct ring_info_cb_arg *)arg;
> +	struct rte_tel_data *d = ring_arg->d;
> +	const struct rte_memzone *mz;
> +
> +	if (strncmp(r->name, ring_arg->ring_name, RTE_RING_NAMESIZE))
> +		return;
> +
> +	rte_tel_data_add_dict_string(d, "name", r->name);
> +	rte_tel_data_add_dict_int(d, "socket", r->memzone->socket_id);
> +	rte_tel_data_add_dict_uint_hex(d, "flags", r->flags, 0);
> +	rte_tel_data_add_dict_string(d, "producer_type",
> +		ring_prod_sync_type_to_name(r));
> +	rte_tel_data_add_dict_string(d, "consumer_type",
> +		ring_cons_sync_type_to_name(r));
> +	rte_tel_data_add_dict_uint(d, "size", r->size);
> +	rte_tel_data_add_dict_uint_hex(d, "mask", r->mask, 0);
> +	rte_tel_data_add_dict_uint(d, "capacity", r->capacity);
> +	rte_tel_data_add_dict_uint(d, "used_count", rte_ring_count(r));
> +
> +	mz = r->memzone;
> +	if (mz == NULL)
> +		return;
> +	rte_tel_data_add_dict_string(d, "mz_name", mz->name);
> +	rte_tel_data_add_dict_uint(d, "mz_len", mz->len);
> +	rte_tel_data_add_dict_uint(d, "mz_hugepage_sz", mz->hugepage_sz);
> +	rte_tel_data_add_dict_int(d, "mz_socket_id", mz->socket_id);
> +	rte_tel_data_add_dict_uint_hex(d, "mz_flags", mz->flags, 0);
> +}
> +
> +static int
> +ring_handle_info(const char *cmd __rte_unused, const char *params,
> +		struct rte_tel_data *d)
> +{
> +	char name[RTE_RING_NAMESIZE] = {0};
> +	struct ring_info_cb_arg ring_arg;
> +
> +	if (params == NULL || strlen(params) == 0 ||
> +		strlen(params) >= RTE_RING_NAMESIZE)
> +		return -EINVAL;
> +
> +	rte_strlcpy(name, params, RTE_RING_NAMESIZE);
> +
> +	ring_arg.ring_name = name;
> +	ring_arg.d = d;
> +
> +	rte_tel_data_start_dict(d);
> +	ring_walk(ring_info_cb, &ring_arg);
> +
> +	return 0;
> +}
> +
>   RTE_INIT(ring_init_telemetry)
>   {
>   	rte_telemetry_register_cmd("/ring/list", ring_handle_list,
>   		"Returns list of available rings. Takes no parameters");
> +	rte_telemetry_register_cmd("/ring/info", ring_handle_info,
> +		"Returns ring info. Parameters: ring_name.");
>   }