net: hns3: refactor out hclge_fd_get_tuple()

The process of function hclge_fd_get_tuple() is complex and
prolix. To make it more readable, extract the process of each
flow-type tuple to a single function.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 117 insertions, 103 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 4929220d344a..a17831f03d6e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -5935,144 +5935,158 @@ static int hclge_fd_update_rule_list(struct hclge_dev *hdev,
 	return 0;
 }
 
-static int hclge_fd_get_tuple(struct hclge_dev *hdev,
-			      struct ethtool_rx_flow_spec *fs,
-			      struct hclge_fd_rule *rule)
+static void hclge_fd_get_tcpip4_tuple(struct hclge_dev *hdev,
+				      struct ethtool_rx_flow_spec *fs,
+				      struct hclge_fd_rule *rule, u8 ip_proto)
 {
-	u32 flow_type = fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT);
+	rule->tuples.src_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->h_u.tcp_ip4_spec.ip4src);
+	rule->tuples_mask.src_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->m_u.tcp_ip4_spec.ip4src);
 
-	switch (flow_type) {
-	case SCTP_V4_FLOW:
-	case TCP_V4_FLOW:
-	case UDP_V4_FLOW:
-		rule->tuples.src_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->h_u.tcp_ip4_spec.ip4src);
-		rule->tuples_mask.src_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->m_u.tcp_ip4_spec.ip4src);
+	rule->tuples.dst_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->h_u.tcp_ip4_spec.ip4dst);
+	rule->tuples_mask.dst_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->m_u.tcp_ip4_spec.ip4dst);
 
-		rule->tuples.dst_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->h_u.tcp_ip4_spec.ip4dst);
-		rule->tuples_mask.dst_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->m_u.tcp_ip4_spec.ip4dst);
+	rule->tuples.src_port = be16_to_cpu(fs->h_u.tcp_ip4_spec.psrc);
+	rule->tuples_mask.src_port = be16_to_cpu(fs->m_u.tcp_ip4_spec.psrc);
 
-		rule->tuples.src_port = be16_to_cpu(fs->h_u.tcp_ip4_spec.psrc);
-		rule->tuples_mask.src_port =
-				be16_to_cpu(fs->m_u.tcp_ip4_spec.psrc);
+	rule->tuples.dst_port = be16_to_cpu(fs->h_u.tcp_ip4_spec.pdst);
+	rule->tuples_mask.dst_port = be16_to_cpu(fs->m_u.tcp_ip4_spec.pdst);
 
-		rule->tuples.dst_port = be16_to_cpu(fs->h_u.tcp_ip4_spec.pdst);
-		rule->tuples_mask.dst_port =
-				be16_to_cpu(fs->m_u.tcp_ip4_spec.pdst);
+	rule->tuples.ip_tos = fs->h_u.tcp_ip4_spec.tos;
+	rule->tuples_mask.ip_tos = fs->m_u.tcp_ip4_spec.tos;
 
-		rule->tuples.ip_tos = fs->h_u.tcp_ip4_spec.tos;
-		rule->tuples_mask.ip_tos = fs->m_u.tcp_ip4_spec.tos;
+	rule->tuples.ether_proto = ETH_P_IP;
+	rule->tuples_mask.ether_proto = 0xFFFF;
 
-		rule->tuples.ether_proto = ETH_P_IP;
-		rule->tuples_mask.ether_proto = 0xFFFF;
+	rule->tuples.ip_proto = ip_proto;
+	rule->tuples_mask.ip_proto = 0xFF;
+}
 
-		break;
-	case IP_USER_FLOW:
-		rule->tuples.src_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->h_u.usr_ip4_spec.ip4src);
-		rule->tuples_mask.src_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->m_u.usr_ip4_spec.ip4src);
+static void hclge_fd_get_ip4_tuple(struct hclge_dev *hdev,
+				   struct ethtool_rx_flow_spec *fs,
+				   struct hclge_fd_rule *rule)
+{
+	rule->tuples.src_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->h_u.usr_ip4_spec.ip4src);
+	rule->tuples_mask.src_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->m_u.usr_ip4_spec.ip4src);
 
-		rule->tuples.dst_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->h_u.usr_ip4_spec.ip4dst);
-		rule->tuples_mask.dst_ip[IPV4_INDEX] =
-				be32_to_cpu(fs->m_u.usr_ip4_spec.ip4dst);
+	rule->tuples.dst_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->h_u.usr_ip4_spec.ip4dst);
+	rule->tuples_mask.dst_ip[IPV4_INDEX] =
+			be32_to_cpu(fs->m_u.usr_ip4_spec.ip4dst);
 
-		rule->tuples.ip_tos = fs->h_u.usr_ip4_spec.tos;
-		rule->tuples_mask.ip_tos = fs->m_u.usr_ip4_spec.tos;
+	rule->tuples.ip_tos = fs->h_u.usr_ip4_spec.tos;
+	rule->tuples_mask.ip_tos = fs->m_u.usr_ip4_spec.tos;
 
-		rule->tuples.ip_proto = fs->h_u.usr_ip4_spec.proto;
-		rule->tuples_mask.ip_proto = fs->m_u.usr_ip4_spec.proto;
+	rule->tuples.ip_proto = fs->h_u.usr_ip4_spec.proto;
+	rule->tuples_mask.ip_proto = fs->m_u.usr_ip4_spec.proto;
 
-		rule->tuples.ether_proto = ETH_P_IP;
-		rule->tuples_mask.ether_proto = 0xFFFF;
+	rule->tuples.ether_proto = ETH_P_IP;
+	rule->tuples_mask.ether_proto = 0xFFFF;
+}
 
-		break;
-	case SCTP_V6_FLOW:
-	case TCP_V6_FLOW:
-	case UDP_V6_FLOW:
-		be32_to_cpu_array(rule->tuples.src_ip,
-				  fs->h_u.tcp_ip6_spec.ip6src, IPV6_SIZE);
-		be32_to_cpu_array(rule->tuples_mask.src_ip,
-				  fs->m_u.tcp_ip6_spec.ip6src, IPV6_SIZE);
+static void hclge_fd_get_tcpip6_tuple(struct hclge_dev *hdev,
+				      struct ethtool_rx_flow_spec *fs,
+				      struct hclge_fd_rule *rule, u8 ip_proto)
+{
+	be32_to_cpu_array(rule->tuples.src_ip, fs->h_u.tcp_ip6_spec.ip6src,
+			  IPV6_SIZE);
+	be32_to_cpu_array(rule->tuples_mask.src_ip, fs->m_u.tcp_ip6_spec.ip6src,
+			  IPV6_SIZE);
 
-		be32_to_cpu_array(rule->tuples.dst_ip,
-				  fs->h_u.tcp_ip6_spec.ip6dst, IPV6_SIZE);
-		be32_to_cpu_array(rule->tuples_mask.dst_ip,
-				  fs->m_u.tcp_ip6_spec.ip6dst, IPV6_SIZE);
+	be32_to_cpu_array(rule->tuples.dst_ip, fs->h_u.tcp_ip6_spec.ip6dst,
+			  IPV6_SIZE);
+	be32_to_cpu_array(rule->tuples_mask.dst_ip, fs->m_u.tcp_ip6_spec.ip6dst,
+			  IPV6_SIZE);
 
-		rule->tuples.src_port = be16_to_cpu(fs->h_u.tcp_ip6_spec.psrc);
-		rule->tuples_mask.src_port =
-				be16_to_cpu(fs->m_u.tcp_ip6_spec.psrc);
+	rule->tuples.src_port = be16_to_cpu(fs->h_u.tcp_ip6_spec.psrc);
+	rule->tuples_mask.src_port = be16_to_cpu(fs->m_u.tcp_ip6_spec.psrc);
 
-		rule->tuples.dst_port = be16_to_cpu(fs->h_u.tcp_ip6_spec.pdst);
-		rule->tuples_mask.dst_port =
-				be16_to_cpu(fs->m_u.tcp_ip6_spec.pdst);
+	rule->tuples.dst_port = be16_to_cpu(fs->h_u.tcp_ip6_spec.pdst);
+	rule->tuples_mask.dst_port = be16_to_cpu(fs->m_u.tcp_ip6_spec.pdst);
 
-		rule->tuples.ether_proto = ETH_P_IPV6;
-		rule->tuples_mask.ether_proto = 0xFFFF;
+	rule->tuples.ether_proto = ETH_P_IPV6;
+	rule->tuples_mask.ether_proto = 0xFFFF;
 
-		break;
-	case IPV6_USER_FLOW:
-		be32_to_cpu_array(rule->tuples.src_ip,
-				  fs->h_u.usr_ip6_spec.ip6src, IPV6_SIZE);
-		be32_to_cpu_array(rule->tuples_mask.src_ip,
-				  fs->m_u.usr_ip6_spec.ip6src, IPV6_SIZE);
+	rule->tuples.ip_proto = ip_proto;
+	rule->tuples_mask.ip_proto = 0xFF;
+}
 
-		be32_to_cpu_array(rule->tuples.dst_ip,
-				  fs->h_u.usr_ip6_spec.ip6dst, IPV6_SIZE);
-		be32_to_cpu_array(rule->tuples_mask.dst_ip,
-				  fs->m_u.usr_ip6_spec.ip6dst, IPV6_SIZE);
+static void hclge_fd_get_ip6_tuple(struct hclge_dev *hdev,
+				   struct ethtool_rx_flow_spec *fs,
+				   struct hclge_fd_rule *rule)
+{
+	be32_to_cpu_array(rule->tuples.src_ip, fs->h_u.usr_ip6_spec.ip6src,
+			  IPV6_SIZE);
+	be32_to_cpu_array(rule->tuples_mask.src_ip, fs->m_u.usr_ip6_spec.ip6src,
+			  IPV6_SIZE);
 
-		rule->tuples.ip_proto = fs->h_u.usr_ip6_spec.l4_proto;
-		rule->tuples_mask.ip_proto = fs->m_u.usr_ip6_spec.l4_proto;
+	be32_to_cpu_array(rule->tuples.dst_ip, fs->h_u.usr_ip6_spec.ip6dst,
+			  IPV6_SIZE);
+	be32_to_cpu_array(rule->tuples_mask.dst_ip, fs->m_u.usr_ip6_spec.ip6dst,
+			  IPV6_SIZE);
 
-		rule->tuples.ether_proto = ETH_P_IPV6;
-		rule->tuples_mask.ether_proto = 0xFFFF;
+	rule->tuples.ip_proto = fs->h_u.usr_ip6_spec.l4_proto;
+	rule->tuples_mask.ip_proto = fs->m_u.usr_ip6_spec.l4_proto;
 
-		break;
-	case ETHER_FLOW:
-		ether_addr_copy(rule->tuples.src_mac,
-				fs->h_u.ether_spec.h_source);
-		ether_addr_copy(rule->tuples_mask.src_mac,
-				fs->m_u.ether_spec.h_source);
+	rule->tuples.ether_proto = ETH_P_IPV6;
+	rule->tuples_mask.ether_proto = 0xFFFF;
+}
 
-		ether_addr_copy(rule->tuples.dst_mac,
-				fs->h_u.ether_spec.h_dest);
-		ether_addr_copy(rule->tuples_mask.dst_mac,
-				fs->m_u.ether_spec.h_dest);
+static void hclge_fd_get_ether_tuple(struct hclge_dev *hdev,
+				     struct ethtool_rx_flow_spec *fs,
+				     struct hclge_fd_rule *rule)
+{
+	ether_addr_copy(rule->tuples.src_mac, fs->h_u.ether_spec.h_source);
+	ether_addr_copy(rule->tuples_mask.src_mac, fs->m_u.ether_spec.h_source);
 
-		rule->tuples.ether_proto =
-				be16_to_cpu(fs->h_u.ether_spec.h_proto);
-		rule->tuples_mask.ether_proto =
-				be16_to_cpu(fs->m_u.ether_spec.h_proto);
+	ether_addr_copy(rule->tuples.dst_mac, fs->h_u.ether_spec.h_dest);
+	ether_addr_copy(rule->tuples_mask.dst_mac, fs->m_u.ether_spec.h_dest);
 
-		break;
-	default:
-		return -EOPNOTSUPP;
-	}
+	rule->tuples.ether_proto = be16_to_cpu(fs->h_u.ether_spec.h_proto);
+	rule->tuples_mask.ether_proto = be16_to_cpu(fs->m_u.ether_spec.h_proto);
+}
+
+static int hclge_fd_get_tuple(struct hclge_dev *hdev,
+			      struct ethtool_rx_flow_spec *fs,
+			      struct hclge_fd_rule *rule)
+{
+	u32 flow_type = fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT);
 
 	switch (flow_type) {
 	case SCTP_V4_FLOW:
-	case SCTP_V6_FLOW:
-		rule->tuples.ip_proto = IPPROTO_SCTP;
-		rule->tuples_mask.ip_proto = 0xFF;
+		hclge_fd_get_tcpip4_tuple(hdev, fs, rule, IPPROTO_SCTP);
 		break;
 	case TCP_V4_FLOW:
-	case TCP_V6_FLOW:
-		rule->tuples.ip_proto = IPPROTO_TCP;
-		rule->tuples_mask.ip_proto = 0xFF;
+		hclge_fd_get_tcpip4_tuple(hdev, fs, rule, IPPROTO_TCP);
 		break;
 	case UDP_V4_FLOW:
+		hclge_fd_get_tcpip4_tuple(hdev, fs, rule, IPPROTO_UDP);
+		break;
+	case IP_USER_FLOW:
+		hclge_fd_get_ip4_tuple(hdev, fs, rule);
+		break;
+	case SCTP_V6_FLOW:
+		hclge_fd_get_tcpip6_tuple(hdev, fs, rule, IPPROTO_SCTP);
+		break;
+	case TCP_V6_FLOW:
+		hclge_fd_get_tcpip6_tuple(hdev, fs, rule, IPPROTO_TCP);
+		break;
 	case UDP_V6_FLOW:
-		rule->tuples.ip_proto = IPPROTO_UDP;
-		rule->tuples_mask.ip_proto = 0xFF;
+		hclge_fd_get_tcpip6_tuple(hdev, fs, rule, IPPROTO_UDP);
 		break;
-	default:
+	case IPV6_USER_FLOW:
+		hclge_fd_get_ip6_tuple(hdev, fs, rule);
 		break;
+	case ETHER_FLOW:
+		hclge_fd_get_ether_tuple(hdev, fs, rule);
+		break;
+	default:
+		return -EOPNOTSUPP;
 	}
 
 	if (fs->flow_type & FLOW_EXT) {