Commit 940c2a93 authored Feb 04, 2017 by Prakash Gupta Committed by Praveen Kurapati Apr 10, 2020

net: support __netdev_alloc_skb to always use GFP_DMA



This make it possible to ensure that any clients which use
__netdev_alloc_skb always allocate memory from the DMA zone.

Change-Id: Ia2a32905ac8f3e1b26fd6bcee5a04b96bdf29bef
Signed-off-by: Praveen Kurapati <pkurapat@codeaurora.org>
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>

parent cccfd52b

net/core/skbuff.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -398,6 +398,9 @@ struct sk_buff __netdev_alloc_skb(struct net_device dev, unsigned int len,

		len += NET_SKB_PAD;

		if (IS_ENABLED(CONFIG_FORCE_ALLOC_FROM_DMA_ZONE))
		gfp_mask \|= GFP_DMA;

		if ((len > SKB_WITH_OVERHEAD(PAGE_SIZE)) \|\|
		(gfp_mask & (__GFP_DIRECT_RECLAIM \| GFP_DMA))) {
		skb = __alloc_skb(len, gfp_mask, SKB_ALLOC_RX, NUMA_NO_NODE);