net: hns3: fix rx path skb->truesize reporting bug (f8d291f0) · Commits · 戴 / test

Original skb->truesize reports the received packet size, not the actual buffer size NIC driver allocated(1 Page). The linux net protocol will misjudge the true size of rx queue. Signed-off-by:

Peng Li <lipeng321@huawei.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

+4 −6

Original line number	Diff line number	Diff line
		@@ -2080,15 +2080,13 @@ static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
		desc = &ring->desc[ring->next_to_clean];
		size = le16_to_cpu(desc->rx.size);

		if (twobufs) {
		truesize = hnae_buf_size(ring);
		} else {
		truesize = ALIGN(size, L1_CACHE_BYTES);

		if (!twobufs)
		last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
		}

		skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
		size - pull_len, truesize - pull_len);
		size - pull_len, truesize);

		/* Avoid re-using remote pages,flag default unreuse */
		if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))

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