1 files changed, 2 insertions, 102 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index e75c65270222..66cbb66b2326 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1954,106 +1954,6 @@ hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
 	writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
 }
 
-/* hns3_nic_get_headlen - determine size of header for LRO/GRO
- * @data: pointer to the start of the headers
- * @max: total length of section to find headers in
- *
- * This function is meant to determine the length of headers that will
- * be recognized by hardware for LRO, GRO, and RSC offloads.  The main
- * motivation of doing this is to only perform one pull for IPv4 TCP
- * packets so that we can do basic things like calculating the gso_size
- * based on the average data per packet.
- */
-static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag,
-					 unsigned int max_size)
-{
-	unsigned char *network;
-	u8 hlen;
-
-	/* This should never happen, but better safe than sorry */
-	if (max_size < ETH_HLEN)
-		return max_size;
-
-	/* Initialize network frame pointer */
-	network = data;
-
-	/* Set first protocol and move network header forward */
-	network += ETH_HLEN;
-
-	/* Handle any vlan tag if present */
-	if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S)
-		== HNS3_RX_FLAG_VLAN_PRESENT) {
-		if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
-			return max_size;
-
-		network += VLAN_HLEN;
-	}
-
-	/* Handle L3 protocols */
-	if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
-		== HNS3_RX_FLAG_L3ID_IPV4) {
-		if ((typeof(max_size))(network - data) >
-		    (max_size - sizeof(struct iphdr)))
-			return max_size;
-
-		/* Access ihl as a u8 to avoid unaligned access on ia64 */
-		hlen = (network[0] & 0x0F) << 2;
-
-		/* Verify hlen meets minimum size requirements */
-		if (hlen < sizeof(struct iphdr))
-			return network - data;
-
-		/* Record next protocol if header is present */
-	} else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
-		== HNS3_RX_FLAG_L3ID_IPV6) {
-		if ((typeof(max_size))(network - data) >
-		    (max_size - sizeof(struct ipv6hdr)))
-			return max_size;
-
-		/* Record next protocol */
-		hlen = sizeof(struct ipv6hdr);
-	} else {
-		return network - data;
-	}
-
-	/* Relocate pointer to start of L4 header */
-	network += hlen;
-
-	/* Finally sort out TCP/UDP */
-	if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
-		== HNS3_RX_FLAG_L4ID_TCP) {
-		if ((typeof(max_size))(network - data) >
-		    (max_size - sizeof(struct tcphdr)))
-			return max_size;
-
-		/* Access doff as a u8 to avoid unaligned access on ia64 */
-		hlen = (network[12] & 0xF0) >> 2;
-
-		/* Verify hlen meets minimum size requirements */
-		if (hlen < sizeof(struct tcphdr))
-			return network - data;
-
-		network += hlen;
-	} else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
-		== HNS3_RX_FLAG_L4ID_UDP) {
-		if ((typeof(max_size))(network - data) >
-		    (max_size - sizeof(struct udphdr)))
-			return max_size;
-
-		network += sizeof(struct udphdr);
-	}
-
-	/* If everything has gone correctly network should be the
-	 * data section of the packet and will be the end of the header.
-	 * If not then it probably represents the end of the last recognized
-	 * header.
-	 */
-	if ((typeof(max_size))(network - data) < max_size)
-		return network - data;
-	else
-		return max_size;
-}
-
 static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
 				struct hns3_enet_ring *ring, int pull_len,
 				struct hns3_desc_cb *desc_cb)
@@ -2253,8 +2153,8 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
 		ring->stats.seg_pkt_cnt++;
 		u64_stats_update_end(&ring->syncp);
 
-		pull_len = hns3_nic_get_headlen(va, l234info,
-						HNS3_RX_HEAD_SIZE);
+		pull_len = eth_get_headlen(va, HNS3_RX_HEAD_SIZE);
+
 		memcpy(__skb_put(skb, pull_len), va,
 		       ALIGN(pull_len, sizeof(long)));