Function rte_telemetry_register_cmd

dpdk/lib/telemetry/telemetry.c:70–109

#endif /* !RTE_EXEC_ENV_WINDOWS */

int
rte_telemetry_register_cmd(const char *cmd, telemetry_cb fn, const char *help)
{
	struct cmd_callback *new_callbacks;
	const char *cmdp = cmd;
	int i = 0;

	if (strlen(cmd) >= MAX_CMD_LEN || fn == NULL || cmd[0] != '/'
			|| strlen(help) >= RTE_TEL_MAX_STRING_LEN)
		return -EINVAL;

	while (*cmdp != '\0') {
		if (!isalnum(*cmdp) && *cmdp != '_' && *cmdp != '/')
			return -EINVAL;
		cmdp++;
	}

	rte_spinlock_lock(&callback_sl);
	new_callbacks = realloc(callbacks, sizeof(callbacks[0]) * (num_callbacks + 1));
	if (new_callbacks == NULL) {
		rte_spinlock_unlock(&callback_sl);
		return -ENOMEM;
	}
	callbacks = new_callbacks;

	while (i < num_callbacks && strcmp(cmd, callbacks[i].cmd) > 0)
		i++;
	if (i != num_callbacks)
		/* Move elements to keep the list alphabetical */
		memmove(callbacks + i + 1, callbacks + i,
			sizeof(struct cmd_callback) * (num_callbacks - i));

	strlcpy(callbacks[i].cmd, cmd, MAX_CMD_LEN);
	callbacks[i].fn = fn;
	strlcpy(callbacks[i].help, help, RTE_TEL_MAX_STRING_LEN);
	num_callbacks++;
	rte_spinlock_unlock(&callback_sl);

	return 0;
}

#ifndef RTE_EXEC_ENV_WINDOWS