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From: Jie Hai <haijie1@huawei.com>
To: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>, Konstantin Ananyev
<konstantin.v.ananyev@yandex.ru>
CC: <dev@dpdk.org>, <liudongdong3@huawei.com>
Subject: [PATCH v6 2/3] ring: add telemetry cmd to list rings
Date: Tue, 9 May 2023 17:24:58 +0800
Message-ID: <20230509092459.20140-3-haijie1@huawei.com>
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Add a telemetry command to list the rings used in the system.
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@huawei.com>
Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Huisong Li <lihuisong@huawei.com>
Acked-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Morten Brørup <mb@smartsharesystems.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 8ed455043dee..0e83d0099363 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"
@@ -420,3 +421,42 @@ rte_ring_lookup(const char *name)
return r;
}
+
+static void
+ring_walk(void (*func)(struct rte_ring *, void *), void *arg)
+{
+ struct rte_ring_list *ring_list;
+ struct rte_tailq_entry *tailq_entry;
+
+ ring_list = RTE_TAILQ_CAST(rte_ring_tailq.head, rte_ring_list);
+ rte_mcfg_tailq_read_lock();
+
+ TAILQ_FOREACH(tailq_entry, ring_list, next) {
+ (*func)((struct rte_ring *) tailq_entry->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);
+ 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 rings. Takes no parameters");
+}
--
2.33.0