cryptodev: add telemetry endpoint for capabilities

Add telemetry endpoint for getting cryptodev capabilities.

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

diff --git a/doc/guides/prog_guide/cryptodev_lib.rst b/doc/guides/prog_guide/cryptodev_lib.rst
index 25663e5..0af35f5 100644 (file)
--- a/doc/guides/prog_guide/cryptodev_lib.rst
+++ b/doc/guides/prog_guide/cryptodev_lib.rst
@@ -1308,5 +1308,10 @@ are shown below.
      {"/cryptodev/stats": {"enqueued_count": 0, "dequeued_count": 0,
      "enqueue_err_count": 0, "dequeue_err_count": 0}}
 
+#. Get the capabilities of a particular Crypto device::
+     --> /cryptodev/caps,0
+     {"/cryptodev/caps": {"crypto_caps": [<array of serialized bytes of
+     capabilities>], "crypto_caps_n": <number of capabilities>}}
+
 For more information on how to use the Telemetry interface, see
 the :doc:`../howto/telemetry`.

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 9d24577..7c1be8c 100644 (file)
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -237,6 +237,7 @@ New Features
 
   Added telemetry callback functions which allow a list of crypto devices,
   stats for a crypto device, and other device information to be queried.
+  Also added callback to get cryptodev capabilities.
 
 * **Updated Marvell cnxk crypto PMD.**
 

diff --git a/lib/cryptodev/rte_cryptodev.c b/lib/cryptodev/rte_cryptodev.c
index 3b01a4b..a40536c 100644 (file)
--- a/lib/cryptodev/rte_cryptodev.c
+++ b/lib/cryptodev/rte_cryptodev.c
@@ -2511,6 +2511,64 @@ cryptodev_handle_dev_stats(const char *cmd __rte_unused,
        return 0;
 }
 
+#define CRYPTO_CAPS_SZ                                             \
+       (RTE_ALIGN_CEIL(sizeof(struct rte_cryptodev_capabilities), \
+                                       sizeof(uint64_t)) /        \
+        sizeof(uint64_t))
+
+static int
+crypto_caps_array(struct rte_tel_data *d,
+                 const struct rte_cryptodev_capabilities *capabilities)
+{
+       const struct rte_cryptodev_capabilities *dev_caps;
+       uint64_t caps_val[CRYPTO_CAPS_SZ];
+       unsigned int i = 0, j;
+
+       rte_tel_data_start_array(d, RTE_TEL_U64_VAL);
+
+       while ((dev_caps = &capabilities[i++])->op !=
+                       RTE_CRYPTO_OP_TYPE_UNDEFINED) {
+               memset(&caps_val, 0, CRYPTO_CAPS_SZ * sizeof(caps_val[0]));
+               rte_memcpy(caps_val, dev_caps, sizeof(capabilities[0]));
+               for (j = 0; j < CRYPTO_CAPS_SZ; j++)
+                       rte_tel_data_add_array_u64(d, caps_val[j]);
+       }
+
+       return i;
+}
+
+static int
+cryptodev_handle_dev_caps(const char *cmd __rte_unused, const char *params,
+                         struct rte_tel_data *d)
+{
+       struct rte_cryptodev_info dev_info;
+       struct rte_tel_data *crypto_caps;
+       int crypto_caps_n;
+       char *end_param;
+       int dev_id;
+
+       if (!params || strlen(params) == 0 || !isdigit(*params))
+               return -EINVAL;
+
+       dev_id = strtoul(params, &end_param, 0);
+       if (*end_param != '\0')
+               CDEV_LOG_ERR("Extra parameters passed to command, ignoring");
+       if (!rte_cryptodev_is_valid_dev(dev_id))
+               return -EINVAL;
+
+       rte_tel_data_start_dict(d);
+       crypto_caps = rte_tel_data_alloc();
+       if (!crypto_caps)
+               return -ENOMEM;
+
+       rte_cryptodev_info_get(dev_id, &dev_info);
+       crypto_caps_n = crypto_caps_array(crypto_caps, dev_info.capabilities);
+       rte_tel_data_add_dict_container(d, "crypto_caps", crypto_caps, 0);
+       rte_tel_data_add_dict_int(d, "crypto_caps_n", crypto_caps_n);
+
+       return 0;
+}
+
 RTE_INIT(cryptodev_init_telemetry)
 {
        rte_telemetry_register_cmd("/cryptodev/info", cryptodev_handle_dev_info,
@@ -2521,4 +2579,7 @@ RTE_INIT(cryptodev_init_telemetry)
        rte_telemetry_register_cmd("/cryptodev/stats",
                        cryptodev_handle_dev_stats,
                        "Returns the stats for a cryptodev. Parameters: int dev_id");
+       rte_telemetry_register_cmd("/cryptodev/caps",
+                       cryptodev_handle_dev_caps,
+                       "Returns the capabilities for a cryptodev. Parameters: int dev_id");
 }