[PATCH v2 1/2] ring: add ring list telemetry cmd
Konstantin Ananyev
konstantin.v.ananyev at yandex.ru
Sun Jan 22 17:40:56 CET 2023
Hi Jie,
> This patch supports the list of rings with telemetry cmd.
> An example using this command is shown below:
>
> --> /ring/list
> {
> "/ring/list": [
> "HT_0000:7d:00.2",
> "MP_mb_pool_0"
> ]
> }
>
> Signed-off-by: Jie Hai <haijie1 at huawei.com>
> ---
> lib/ring/meson.build | 1 +
> lib/ring/rte_ring.c | 40 ++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 41 insertions(+)
>
> diff --git a/lib/ring/meson.build b/lib/ring/meson.build
> index c20685c689ac..7fca958ed7fa 100644
> --- a/lib/ring/meson.build
> +++ b/lib/ring/meson.build
> @@ -18,3 +18,4 @@ indirect_headers += files (
> 'rte_ring_rts.h',
> 'rte_ring_rts_elem_pvt.h',
> )
> +deps += ['telemetry']
> diff --git a/lib/ring/rte_ring.c b/lib/ring/rte_ring.c
> index cddaf6b2876f..bb1dafd4d1ca 100644
> --- a/lib/ring/rte_ring.c
> +++ b/lib/ring/rte_ring.c
> @@ -22,6 +22,7 @@
> #include <rte_errno.h>
> #include <rte_string_fns.h>
> #include <rte_tailq.h>
> +#include <rte_telemetry.h>
>
> #include "rte_ring.h"
> #include "rte_ring_elem.h"
> @@ -419,3 +420,42 @@ rte_ring_lookup(const char *name)
>
> return r;
> }
> +
> +static void
> +rte_ring_walk(void (*func)(struct rte_ring *, void *), void *arg)
As a nit: it is a static function, so I think we can skip 'rte_' prefix
for it.
Apart from that:
Acked-by: Konstantin Ananyev <konstantin.v.ananyev at yandex.ru>
> +{
> + struct rte_ring_list *ring_list;
> + struct rte_tailq_entry *te;
> +
> + ring_list = RTE_TAILQ_CAST(rte_ring_tailq.head, rte_ring_list);
> + rte_mcfg_tailq_read_lock();
> +
> + TAILQ_FOREACH(te, ring_list, next) {
> + (*func)((struct rte_ring *) te->data, arg);
> + }
> +
> + rte_mcfg_tailq_read_unlock();
> +}
> +
> +static void
> +ring_list_cb(struct rte_ring *r, void *arg)
> +{
> + struct rte_tel_data *d = (struct rte_tel_data *)arg;
> +
> + rte_tel_data_add_array_string(d, r->name);
> +}
> +
> +static int
> +ring_handle_list(const char *cmd __rte_unused,
> + const char *params __rte_unused, struct rte_tel_data *d)
> +{
> + rte_tel_data_start_array(d, RTE_TEL_STRING_VAL);
> + rte_ring_walk(ring_list_cb, d);
> + return 0;
> +}
> +
> +RTE_INIT(ring_init_telemetry)
> +{
> + rte_telemetry_register_cmd("/ring/list", ring_handle_list,
> + "Returns list of available ring. Takes no parameters");
> +}
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