+ /* IPv6 Neighbor Discovery. */
+ case NFI_NXM_NX_ND_TARGET:
+ /* We've already verified that it's an ICMPv6 message. */
+ if ((flow->tp_src != htons(ND_NEIGHBOR_SOLICIT))
+ && (flow->tp_src != htons(ND_NEIGHBOR_ADVERT))) {
+ return NXM_BAD_PREREQ;
+ }
+ memcpy(&flow->nd_target, value, sizeof flow->nd_target);
+ return 0;
+ case NFI_NXM_NX_ND_SLL:
+ /* We've already verified that it's an ICMPv6 message. */
+ if (flow->tp_src != htons(ND_NEIGHBOR_SOLICIT)) {
+ return NXM_BAD_PREREQ;
+ }
+ memcpy(flow->arp_sha, value, ETH_ADDR_LEN);
+ return 0;
+ case NFI_NXM_NX_ND_TLL:
+ /* We've already verified that it's an ICMPv6 message. */
+ if (flow->tp_src != htons(ND_NEIGHBOR_ADVERT)) {
+ return NXM_BAD_PREREQ;
+ }
+ memcpy(flow->arp_tha, value, ETH_ADDR_LEN);
+ return 0;
+