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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2020-05-23 16:27:08 +0300
committerDavid S. Miller <davem@davemloft.net>2020-05-24 02:56:17 +0300
commitcb8a14b205699fee1053a406e1e3fce330b6bdc3 (patch)
tree4bd7f26459aed2dd4d419af814499e32ec312880 /net/devres.c
parent7eef3d095abe11fd7f99fa86c0be7c14b8852fae (diff)
downloadlinux-cb8a14b205699fee1053a406e1e3fce330b6bdc3.tar.xz
net: move devres helpers into a separate source file
There's currently only a single devres helper in net/ - devm variant of alloc_etherdev. Let's move it to net/devres.c with the intention of assing a second one: devm_register_netdev(). This new routine will need to know the address of the release function of devm_alloc_etherdev() so that it can verify (using devres_find()) that the struct net_device that's being passed to it is also resource managed. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/devres.c')
-rw-r--r--net/devres.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/net/devres.c b/net/devres.c
new file mode 100644
index 000000000000..c1465d9f9019
--- /dev/null
+++ b/net/devres.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This file contains all networking devres helpers.
+ */
+
+#include <linux/device.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+
+static void devm_free_netdev(struct device *dev, void *res)
+{
+ free_netdev(*(struct net_device **)res);
+}
+
+struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
+ unsigned int txqs, unsigned int rxqs)
+{
+ struct net_device **dr;
+ struct net_device *netdev;
+
+ dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
+ if (!dr)
+ return NULL;
+
+ netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
+ if (!netdev) {
+ devres_free(dr);
+ return NULL;
+ }
+
+ *dr = netdev;
+ devres_add(dev, dr);
+
+ return netdev;
+}
+EXPORT_SYMBOL(devm_alloc_etherdev_mqs);