From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dev-bounces@dpdk.org>
Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124])
	by inbox.dpdk.org (Postfix) with ESMTP id 16E0EA0032;
	Wed, 14 Sep 2022 10:01:39 +0200 (CEST)
Received: from [217.70.189.124] (localhost [127.0.0.1])
	by mails.dpdk.org (Postfix) with ESMTP id 5B53E42B81;
	Wed, 14 Sep 2022 10:00:41 +0200 (CEST)
Received: from us-smtp-delivery-124.mimecast.com
 (us-smtp-delivery-124.mimecast.com [170.10.129.124])
 by mails.dpdk.org (Postfix) with ESMTP id 5696142B71
 for <dev@dpdk.org>; Wed, 14 Sep 2022 10:00:40 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;
 s=mimecast20190719; t=1663142439;
 h=from:from:reply-to:subject:subject:date:date:message-id:message-id:
 to:to:cc:cc:mime-version:mime-version:content-type:content-type:
 content-transfer-encoding:content-transfer-encoding:
 in-reply-to:in-reply-to:references:references;
 bh=p1yX+axA12iwTRseEGGGZoMn0+oNGNGbMx4JXwORHNA=;
 b=OpR8YuGYUmN9CDKWBZmhCU8OUYgBbxJ3POAzxq8EsrEqxA+p2avd11VMxszBN5oEQR0R1B
 w97nax9YmS4B9EG5dAOM1M7x9ShDSni6UA+D1Jex+qekWcIQ+TvM0CRA5VEkQy4+hUmu4x
 8fS3xz/2GbDblEu9RxQCUbAgpKE3Yeg=
Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com
 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS
 (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 us-mta-351-SP1x86GHMcGRILJkGVGOMA-1; Wed, 14 Sep 2022 04:00:38 -0400
X-MC-Unique: SP1x86GHMcGRILJkGVGOMA-1
Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com
 [10.11.54.9])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2AD55294EDC9;
 Wed, 14 Sep 2022 08:00:38 +0000 (UTC)
Received: from localhost.localdomain (unknown [10.40.194.61])
 by smtp.corp.redhat.com (Postfix) with ESMTP id A4D63492CA2;
 Wed, 14 Sep 2022 08:00:36 +0000 (UTC)
From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, bruce.richardson@intel.com,
 Aman Singh <aman.deep.singh@intel.com>,
 Yuying Zhang <yuying.zhang@intel.com>, Ray Kinsella <mdr@ashroe.eu>,
 Ferruh Yigit <ferruh.yigit@xilinx.com>,
 Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Subject: [PATCH v6 22/27] dev: introduce driver accessors
Date: Wed, 14 Sep 2022 09:58:36 +0200
Message-Id: <20220914075841.51555-23-david.marchand@redhat.com>
In-Reply-To: <20220914075841.51555-1-david.marchand@redhat.com>
References: <20220628144643.1213026-1-david.marchand@redhat.com>
 <20220914075841.51555-1-david.marchand@redhat.com>
MIME-Version: 1.0
X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9
X-Mimecast-Spam-Score: 0
X-Mimecast-Originator: redhat.com
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="US-ASCII"; x-default=true
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org

Prepare for making the driver object opaque by adding accessors.
Update existing "external" users.
Internal users may still dereference a rte_driver object.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 app/test-pmd/config.c           |  2 +-
 lib/eal/common/eal_common_dev.c |  6 ++++++
 lib/eal/include/rte_dev.h       | 15 +++++++++++++++
 lib/eal/version.map             |  3 +++
 lib/ethdev/rte_ethdev.h         |  2 +-
 5 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 7bd28ee3e8..6510f29c76 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -654,7 +654,7 @@ device_infos_display(const char *identifier)
 			printf("\n%s Infos for device %s %s\n",
 			       info_border, dev->name, info_border);
 			printf("Bus name: %s", rte_bus_name(dev->bus));
-			printf("\nDriver name: %s", dev->driver->name);
+			printf("\nDriver name: %s", rte_driver_name(dev->driver));
 			printf("\nDevargs: %s",
 			       dev->devargs ? dev->devargs->args : "");
 			printf("\nConnect to socket: %d", dev->numa_node);
diff --git a/lib/eal/common/eal_common_dev.c b/lib/eal/common/eal_common_dev.c
index 62a598957c..16c5aef1d8 100644
--- a/lib/eal/common/eal_common_dev.c
+++ b/lib/eal/common/eal_common_dev.c
@@ -19,6 +19,12 @@
 #include "eal_private.h"
 #include "hotplug_mp.h"
 
+const char *
+rte_driver_name(const struct rte_driver *driver)
+{
+	return driver->name;
+}
+
 /**
  * The device event callback description.
  *
diff --git a/lib/eal/include/rte_dev.h b/lib/eal/include/rte_dev.h
index 2743c09320..ddea163cca 100644
--- a/lib/eal/include/rte_dev.h
+++ b/lib/eal/include/rte_dev.h
@@ -76,6 +76,21 @@ struct rte_driver {
 	const char *alias;              /**< Driver alias. */
 };
 
+/**
+ * Retrieve a driver name.
+ *
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * @param driver
+ *   A pointer to a driver structure.
+ * @return
+ *   A pointer to the driver name string.
+ */
+__rte_experimental
+const char *
+rte_driver_name(const struct rte_driver *driver);
+
 /*
  * Internal identifier length
  * Sufficiently large to allow for UUID or PCI address
diff --git a/lib/eal/version.map b/lib/eal/version.map
index 6ec15f1147..d10fd89458 100644
--- a/lib/eal/version.map
+++ b/lib/eal/version.map
@@ -423,6 +423,9 @@ EXPERIMENTAL {
 	rte_thread_self;
 	rte_thread_set_affinity_by_id;
 	rte_thread_set_priority;
+
+	# added in 22.11
+	rte_driver_name;
 };
 
 INTERNAL {
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 41d37e41b5..7556b94602 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -3380,7 +3380,7 @@ int rte_eth_macaddrs_get(uint16_t port_id, struct rte_ether_addr *ma,
  * exists for the device and the rte_eth_dev 'dev' has been populated
  * successfully with a call to it:
  *
- * driver_name = dev->device->driver->name
+ * driver_name = rte_driver_name(dev->device->driver)
  * nb_rx_queues = dev->data->nb_rx_queues
  * nb_tx_queues = dev->data->nb_tx_queues
  * dev_flags = &dev->data->dev_flags
-- 
2.37.3