From cb8a14b205699fee1053a406e1e3fce330b6bdc3 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Sat, 23 May 2020 15:27:08 +0200 Subject: 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 Signed-off-by: David S. Miller --- net/devres.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 net/devres.c (limited to 'net/devres.c') 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 +#include +#include + +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); -- cgit v1.2.3