+
+ if (ipv6_tunnel) {
+
+ uint16_t len;
+
+ /* Check if inner L3/L4 checksum flag is set */
+ if (tx_ol_flags & 0xF0)
+ ol_flags |= PKT_TX_VXLAN_CKSUM;
+
+ inner_l2_len = sizeof(struct ether_hdr);
+ inner_eth_hdr = (struct ether_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + l2_len + l3_len + ETHER_VXLAN_HLEN);
+ eth_type = rte_be_to_cpu_16(inner_eth_hdr->ether_type);
+
+ if (eth_type == ETHER_TYPE_VLAN) {
+ inner_l2_len += sizeof(struct vlan_hdr);
+ eth_type = rte_be_to_cpu_16(*(uint16_t *)
+ ((uintptr_t)ð_hdr->ether_type +
+ sizeof(struct vlan_hdr)));
+ }
+
+ len = l2_len + l3_len + ETHER_VXLAN_HLEN + inner_l2_len;
+
+ if (eth_type == ETHER_TYPE_IPv4) {
+ inner_l3_len = sizeof(struct ipv4_hdr);
+ inner_ipv4_hdr = (struct ipv4_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + len);
+ inner_l4_proto = inner_ipv4_hdr->next_proto_id;
+
+ /* HW offload */
+ if (tx_ol_flags & 0x10) {
+
+ /* Do not delete, this is required by HW*/
+ inner_ipv4_hdr->hdr_checksum = 0;
+ ol_flags |= PKT_TX_IPV4_CSUM;
+ }
+ } else if (eth_type == ETHER_TYPE_IPv6) {
+ inner_l3_len = sizeof(struct ipv6_hdr);
+ inner_ipv6_hdr = (struct ipv6_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + len);
+ inner_l4_proto = inner_ipv6_hdr->proto;
+ }
+
+ if ((inner_l4_proto == IPPROTO_UDP) && (tx_ol_flags & 0x20)) {
+ inner_udp_hdr = (struct udp_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + len + inner_l3_len);
+ /* HW offload */
+ ol_flags |= PKT_TX_UDP_CKSUM;
+ inner_udp_hdr->dgram_cksum = 0;
+ if (eth_type == ETHER_TYPE_IPv4)
+ inner_udp_hdr->dgram_cksum = get_ipv4_psd_sum(inner_ipv4_hdr);
+ else if (eth_type == ETHER_TYPE_IPv6)
+ inner_udp_hdr->dgram_cksum = get_ipv6_psd_sum(inner_ipv6_hdr);
+ } else if ((inner_l4_proto == IPPROTO_TCP) && (tx_ol_flags & 0x40)) {
+ /* HW offload */
+ ol_flags |= PKT_TX_TCP_CKSUM;
+ inner_tcp_hdr = (struct tcp_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + len + inner_l3_len);
+
+ if (eth_type == ETHER_TYPE_IPv4)
+ inner_tcp_hdr->cksum = get_ipv4_psd_sum(inner_ipv4_hdr);
+ else if (eth_type == ETHER_TYPE_IPv6)
+ inner_tcp_hdr->cksum = get_ipv6_psd_sum(inner_ipv6_hdr);
+
+ } else if ((inner_l4_proto == IPPROTO_SCTP) && (tx_ol_flags & 0x80)) {
+ /* HW offload */
+ ol_flags |= PKT_TX_SCTP_CKSUM;
+ inner_sctp_hdr = (struct sctp_hdr *) (rte_pktmbuf_mtod(mb,
+ unsigned char *) + len + inner_l3_len);
+ inner_sctp_hdr->cksum = 0;
+ }
+
+ }
+