net: hns3: fix the descriptor index when get rss type (31a16f99) · Commits · 戴 / test

Driver gets rss information from the last descriptor of the packet. When driver handle the rss type, ring->next_to_clean indicates the first descriptor of next packet. This patch fix the descriptor index with "ring->next_to_clean - 1". Fixes: ("net: hns3: Add HW RSS hash information to RX skb") 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

+8 −1

Original line number	Diff line number	Diff line
		@@ -2550,9 +2550,16 @@ static void hns3_set_gro_param(struct sk_buff *skb, u32 l234info,
		static void hns3_set_rx_skb_rss_type(struct hns3_enet_ring *ring,
		struct sk_buff *skb)
		{
		struct hns3_desc *desc = &ring->desc[ring->next_to_clean];
		struct hnae3_handle *handle = ring->tqp->handle;
		enum pkt_hash_types rss_type;
		struct hns3_desc *desc;
		int last_bd;

		/* When driver handle the rss type, ring->next_to_clean indicates the
		* first descriptor of next packet, need -1 here.
		*/
		last_bd = (ring->next_to_clean - 1 + ring->desc_num) % ring->desc_num;
		desc = &ring->desc[last_bd];

		if (le32_to_cpu(desc->rx.rss_hash))
		rss_type = handle->kinfo.rss_type;

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