net: Add netdev_alloc_skb_ip_align() helper
Instead of hardcoding NET_IP_ALIGN stuff in various network drivers,
we can add a helper around netdev_alloc_skb()
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 8c866b5..0c68fbd 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1491,6 +1491,16 @@
return __netdev_alloc_skb(dev, length, GFP_ATOMIC);
}
+static inline struct sk_buff *netdev_alloc_skb_ip_align(struct net_device *dev,
+ unsigned int length)
+{
+ struct sk_buff *skb = netdev_alloc_skb(dev, length + NET_IP_ALIGN);
+
+ if (NET_IP_ALIGN && skb)
+ skb_reserve(skb, NET_IP_ALIGN);
+ return skb;
+}
+
extern struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask);
/**