mirror of https://gitee.com/openkylin/linux.git
bna: fix skb->truesize underestimation
skb->truesize is not meant to be tracking amount of used bytes in an skb, but amount of reserved/consumed bytes in memory. For instance, if we use a single byte in last page fragment, we have to account the full size of the fragment. skb->truesize can be very different from skb->len, that has a very specific safety purpose. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Rasesh Mody <rasesh.mody@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -552,6 +552,7 @@ bnad_cq_setup_skb_frags(struct bna_rcb *rcb, struct sk_buff *skb,
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len = (vec == nvecs) ?
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len = (vec == nvecs) ?
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last_fraglen : unmap->vector.len;
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last_fraglen : unmap->vector.len;
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skb->truesize += unmap->vector.len;
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totlen += len;
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totlen += len;
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skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
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skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
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@ -563,7 +564,6 @@ bnad_cq_setup_skb_frags(struct bna_rcb *rcb, struct sk_buff *skb,
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skb->len += totlen;
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skb->len += totlen;
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skb->data_len += totlen;
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skb->data_len += totlen;
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skb->truesize += totlen;
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}
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}
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static inline void
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static inline void
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