[dpdk-dev] [PATCH 04/14] net/hns3: extract a common interface to check duplicates

["Min Hu (Connor)" <humin29@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

Extract a common interface for PF and VF to check whether the configured
multicast MAC address from rte_eth_dev_mac_addr_add() is the same as the
multicast MAC address from rte_eth_dev_set_mc_addr_list().

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c    | 25 ++++++++++++++++++-------
 drivers/net/hns3/hns3_ethdev.h    |  4 ++++
 drivers/net/hns3/hns3_ethdev_vf.c | 16 ++--------------
 3 files changed, 24 insertions(+), 21 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 2d80b8454c..1650ec77bb 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -1609,27 +1609,38 @@ hns3_add_uc_mac_addr(struct hns3_hw *hw, struct rte_ether_addr *mac_addr)
 	return ret;
 }
 
-static int
-hns3_add_mc_addr_common(struct hns3_hw *hw, struct rte_ether_addr *mac_addr)
+bool
+hns3_find_duplicate_mc_addr(struct hns3_hw *hw, struct rte_ether_addr *mc_addr)
 {
 	char mac_str[RTE_ETHER_ADDR_FMT_SIZE];
 	struct rte_ether_addr *addr;
-	int ret;
 	int i;
 
 	for (i = 0; i < hw->mc_addrs_num; i++) {
 		addr = &hw->mc_addrs[i];
-		/* Check if there are duplicate addresses */
-		if (rte_is_same_ether_addr(addr, mac_addr)) {
+		/* Check if there are duplicate addresses in mc_addrs[] */
+		if (rte_is_same_ether_addr(addr, mc_addr)) {
 			hns3_ether_format_addr(mac_str, RTE_ETHER_ADDR_FMT_SIZE,
-					      addr);
+					       addr);
 			hns3_err(hw, "failed to add mc mac addr, same addrs"
 				 "(%s) is added by the set_mc_mac_addr_list "
 				 "API", mac_str);
-			return -EINVAL;
+			return true;
 		}
 	}
 
+	return false;
+}
+
+static int
+hns3_add_mc_addr_common(struct hns3_hw *hw, struct rte_ether_addr *mac_addr)
+{
+	char mac_str[RTE_ETHER_ADDR_FMT_SIZE];
+	int ret;
+
+	if (hns3_find_duplicate_mc_addr(hw, mac_addr))
+		return -EINVAL;
+
 	ret = hns3_add_mc_mac_addr(hw, mac_addr);
 	if (ret) {
 		hns3_ether_format_addr(mac_str, RTE_ETHER_ADDR_FMT_SIZE,
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index fa08fadc94..20999ce7ab 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -1048,6 +1048,10 @@ void hns3vf_update_link_status(struct hns3_hw *hw, uint8_t link_status,
 			  uint32_t link_speed, uint8_t link_duplex);
 void hns3_parse_devargs(struct rte_eth_dev *dev);
 void hns3vf_update_push_lsc_cap(struct hns3_hw *hw, bool supported);
+
+bool hns3_find_duplicate_mc_addr(struct hns3_hw *hw,
+				struct rte_ether_addr *mc_addr);
+
 int hns3_restore_ptp(struct hns3_adapter *hns);
 int hns3_mbuf_dyn_rx_timestamp_register(struct rte_eth_dev *dev,
 				    struct rte_eth_conf *conf);
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 8e5df05aa2..61489a537f 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -208,22 +208,10 @@ static int
 hns3vf_add_mc_addr_common(struct hns3_hw *hw, struct rte_ether_addr *mac_addr)
 {
 	char mac_str[RTE_ETHER_ADDR_FMT_SIZE];
-	struct rte_ether_addr *addr;
 	int ret;
-	int i;
 
-	for (i = 0; i < hw->mc_addrs_num; i++) {
-		addr = &hw->mc_addrs[i];
-		/* Check if there are duplicate addresses */
-		if (rte_is_same_ether_addr(addr, mac_addr)) {
-			hns3_ether_format_addr(mac_str, RTE_ETHER_ADDR_FMT_SIZE,
-					      addr);
-			hns3_err(hw, "failed to add mc mac addr, same addrs"
-				 "(%s) is added by the set_mc_mac_addr_list "
-				 "API", mac_str);
-			return -EINVAL;
-		}
-	}
+	if (hns3_find_duplicate_mc_addr(hw, mac_addr))
+		return -EINVAL;
 
 	ret = hns3vf_add_mc_mac_addr(hw, mac_addr);
 	if (ret) {
-- 
2.33.0