net: respect GFP_DMA in __netdev_alloc_skb()

Few drivers use GFP_DMA allocations, and netdev_alloc_frag()
doesn't allocate pages in DMA zone.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 46a3d23..d124306 100644 (file)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -353,7 +353,7 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
        unsigned int fragsz = SKB_DATA_ALIGN(length + NET_SKB_PAD) +
                              SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 
-       if (fragsz <= PAGE_SIZE && !(gfp_mask & __GFP_WAIT)) {
+       if (fragsz <= PAGE_SIZE && !(gfp_mask & (__GFP_WAIT | GFP_DMA))) {
                void *data = netdev_alloc_frag(fragsz);
 
                if (likely(data)) {