diff options
Diffstat (limited to 'target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch')
| -rw-r--r-- | target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch b/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch new file mode 100644 index 0000000000..1d44d487c7 --- /dev/null +++ b/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch @@ -0,0 +1,70 @@ +From 40be0dda0725886b623d67868db3219a2e74683b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Sat, 28 Jan 2017 15:15:42 +0100 +Subject: [PATCH] net: add devm version of alloc_etherdev_mqs function + +This patch adds devm_alloc_etherdev_mqs function and devm_alloc_etherdev +macro. These can be used for simpler netdev allocation without having to +care about calling free_netdev. + +Thanks to this change drivers, their error paths and removal paths may +get simpler by a bit. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + include/linux/etherdevice.h | 5 +++++ + net/ethernet/eth.c | 28 ++++++++++++++++++++++++++++ + 2 files changed, 33 insertions(+) + +--- a/include/linux/etherdevice.h ++++ b/include/linux/etherdevice.h +@@ -51,6 +51,11 @@ struct net_device *alloc_etherdev_mqs(in + #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1) + #define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count) + ++struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv, ++ unsigned int txqs, ++ unsigned int rxqs); ++#define devm_alloc_etherdev(dev, sizeof_priv) devm_alloc_etherdev_mqs(dev, sizeof_priv, 1, 1) ++ + struct sk_buff **eth_gro_receive(struct sk_buff **head, + struct sk_buff *skb); + int eth_gro_complete(struct sk_buff *skb, int nhoff); +--- a/net/ethernet/eth.c ++++ b/net/ethernet/eth.c +@@ -387,6 +387,34 @@ struct net_device *alloc_etherdev_mqs(in + } + EXPORT_SYMBOL(alloc_etherdev_mqs); + ++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); ++ + ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len) + { + return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr); |