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Commit 96cd8951 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
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ftmac100: fix skb truesize underestimation 



ftmac100 allocates a page per skb fragment. We must account
PAGE_SIZE increments on skb->truesize, not the actual frag length.

If frame is under 64 bytes, page is freed, so increase truesize only for
bigger frames.

Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
CC: Po-Yu Chuang <ratbert@faraday-tech.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e7e5a403

drivers/net/ethernet/faraday/ftmac100.c

+4 −1
Original line number Diff line number Diff line
@@ -439,7 +439,10 @@ static bool ftmac100_rx_packet(struct ftmac100 *priv, int *processed) 
	skb_fill_page_desc(skb, 0, page, 0, length);

	skb->len += length;

	skb->data_len += length;

	skb->truesize += length;



	/* page might be freed in __pskb_pull_tail() */

	if (length > 64)

		skb->truesize += PAGE_SIZE;

	__pskb_pull_tail(skb, min(length, 64));



	ftmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);