diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 235eea1393bbe35f96ce2c4bdfbec029ac46ad63..e572804169cdff67012785f38214bbd5cdba2480 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -655,6 +655,32 @@ static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto, } } +/* when skb->encapsulation is 0, skb->ip_summed is CHECKSUM_PARTIAL + * and it is udp packet, which has a dest port as the IANA assigned. + * the hardware is expected to do the checksum offload, but the + * hardware will not do the checksum offload when udp dest port is + * 4789. + */ +static bool hns3_tunnel_csum_bug(struct sk_buff *skb) +{ +#define IANA_VXLAN_PORT 4789 + union { + struct tcphdr *tcp; + struct udphdr *udp; + struct gre_base_hdr *gre; + unsigned char *hdr; + } l4; + + l4.hdr = skb_transport_header(skb); + + if (!(!skb->encapsulation && l4.udp->dest == htons(IANA_VXLAN_PORT))) + return false; + + skb_checksum_help(skb); + + return true; +} + static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto, u8 il4_proto, u32 *type_cs_vlan_tso, u32 *ol_type_vlan_len_msec) @@ -743,6 +769,9 @@ static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto, HNS3_L4T_TCP); break; case IPPROTO_UDP: + if (hns3_tunnel_csum_bug(skb)) + break; + hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4T_M, HNS3_TXD_L4T_S,