ftgmac100: fix skb truesize underestimation
ftgmac100 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, and truesize adjusted. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Po-Yu Chuang <ratbert@faraday-tech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -467,7 +467,7 @@ static bool ftgmac100_rx_packet(struct ftgmac100 *priv, int *processed)
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skb->len += size;
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skb->len += size;
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skb->data_len += size;
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skb->data_len += size;
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skb->truesize += size;
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skb->truesize += PAGE_SIZE;
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if (ftgmac100_rxdes_last_segment(rxdes))
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if (ftgmac100_rxdes_last_segment(rxdes))
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done = true;
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done = true;
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@ -478,6 +478,8 @@ static bool ftgmac100_rx_packet(struct ftgmac100 *priv, int *processed)
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rxdes = ftgmac100_current_rxdes(priv);
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rxdes = ftgmac100_current_rxdes(priv);
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} while (!done);
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} while (!done);
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if (skb->len <= 64)
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skb->truesize -= PAGE_SIZE;
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__pskb_pull_tail(skb, min(skb->len, 64U));
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__pskb_pull_tail(skb, min(skb->len, 64U));
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skb->protocol = eth_type_trans(skb, netdev);
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skb->protocol = eth_type_trans(skb, netdev);
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