55 	OVS_CT_NAT = 1 << 0,     /* NAT for committed connections only. */
56 	OVS_CT_SRC_NAT = 1 << 1, /* Source NAT for NEW connections. */
57 	OVS_CT_DST_NAT = 1 << 2, /* Destination NAT for NEW connections. */
66 	u8 nat : 3;                 /* enum ovs_ct_nat */  member
76 	struct nf_nat_range2 range;  /* Only present for SRC NAT and DST NAT. */
239  * 'keep_nat_flags' is true, the existing NAT flags retained, else they are
503 	/* Must invert the tuple if skb has been transformed by NAT. */  in ovs_ct_find_existing()
674 	if (!(info->nat & OVS_CT_NAT))  in ovs_ct_nat()
676 	if (info->nat & OVS_CT_SRC_NAT)  in ovs_ct_nat()
678 	if (info->nat & OVS_CT_DST_NAT)  in ovs_ct_nat()
758 		/* Clear CT state NAT flags to mark that we have not yet done  in __ovs_ct_lookup()
759 		 * NAT after the nf_conntrack_in() call.  We can actually clear  in __ovs_ct_lookup()
764 		/* Update the key, but keep the NAT flags. */  in __ovs_ct_lookup()
773 		 * helper, so that the helper knows about the NAT.  We enforce  in __ovs_ct_lookup()
774 		 * this by delaying both NAT and helper calls for unconfirmed  in __ovs_ct_lookup()
776 		 * packets NAT and Helper may be called in either order.  in __ovs_ct_lookup()
778 		 * NAT will be done only if the CT action has NAT, and only  in __ovs_ct_lookup()
779 		 * once per packet (per zone), as guarded by the NAT bits in  in __ovs_ct_lookup()
782 		if (info->nat && !(key->ct_state & OVS_CS_F_NAT_MASK) &&  in __ovs_ct_lookup()
805 			/* helper installed, add seqadj if NAT is required */  in __ovs_ct_lookup()
806 			if (info->nat && !nfct_seqadj(ct)) {  in __ovs_ct_lookup()
1118 			OVS_NLERR(log, "Unknown NAT attribute (type=%d, max=%d)",  in parse_nat()
1124 			OVS_NLERR(log, "NAT attribute type %d has unexpected length (%d != %d)",  in parse_nat()
1133 			if (info->nat) {  in parse_nat()
1134 				OVS_NLERR(log, "Only one type of NAT may be specified");  in parse_nat()
1137 			info->nat |= OVS_CT_NAT;  in parse_nat()
1138 			info->nat |= ((type == OVS_NAT_ATTR_SRC)  in parse_nat()
1179 			OVS_NLERR(log, "Unknown nat attribute (%d)", type);  in parse_nat()
1185 		OVS_NLERR(log, "NAT attribute has %d unknown bytes", rem);  in parse_nat()
1188 	if (!info->nat) {  in parse_nat()
1192 				  "NAT flags may be given only when NAT range (SRC or DST) is also specified."  in parse_nat()
1196 		info->nat = OVS_CT_NAT;   /* NAT existing connections. */  in parse_nat()
1199 			  "NAT attributes may be specified only when CT COMMIT flag is also specified."  in parse_nat()
1229 	/* NAT length is checked when parsing the nested attributes. */
1426 				       key->ip.proto, ct_info.nat, &ct_info.helper);  in ovs_ct_copy_action()
1456 	if (info->nat & OVS_CT_SRC_NAT) {  in ovs_ct_nat_to_attr()
1459 	} else if (info->nat & OVS_CT_DST_NAT) {  in ovs_ct_nat_to_attr()
1553 	if (ct_info->nat && !ovs_ct_nat_to_attr(ct_info, skb))  in ovs_ct_action_to_attr()
1572 		if (ct_info->nat)  in __ovs_ct_free_action()