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authorAnand B Jyoti <anand.b.jyoti@intel.com>2017-08-10 12:16:53 +0530
committerAnand B Jyoti <anand.b.jyoti@intel.com>2017-09-27 03:29:32 +0530
commit14714e067d8e04a5b0ed9ee7f57b8bacbb8bccf3 (patch)
tree8c828ef8c6eea865256708fe2462947c6fa1bf1c /VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c
parent33dff16b1f7d4b3bcf9a96f0506fcee0e9f6701a (diff)
vCGNAT: changes for gateway packet forwarding
JIRA: SAMPLEVNF-61 Integrating gateway packet forwarding to CGNAT VNF. Change-Id: Ifd528b40134da2d12644a406b2da05a5f044aa1c Signed-off-by: Anand B Jyoti <anand.b.jyoti@intel.com>
Diffstat (limited to 'VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c')
-rw-r--r--VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c386
1 files changed, 152 insertions, 234 deletions
diff --git a/VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c b/VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c
index eb0aca96..f02fd164 100644
--- a/VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c
+++ b/VNFs/vCGNAPT/pipeline/pipeline_cgnapt_be.c
@@ -64,6 +64,7 @@
#include "vnf_common.h"
#include "lib_sip_alg.h"
#include "lib_icmpv6.h"
+#include "gateway.h"
#include "pipeline_common_fe.h"
#ifdef CT_CGNAT
@@ -177,21 +178,6 @@ uint8_t well_known_prefix[16] = {
0x00, 0x00, 0x00, 0x00
};
-static uint32_t local_get_nh_ipv4(
- uint32_t ip,
- uint32_t *port,
- uint32_t *nhip,
- struct pipeline_cgnapt *p_nat);
-static void do_local_nh_ipv4_cache(
- uint32_t dest_if,
- struct pipeline_cgnapt *p_nat);
-
-static uint32_t local_get_nh_ipv6(
- uint8_t *ip,
- uint32_t *port,
- uint8_t nhip[],
- struct pipeline_cgnapt *p_nat);
-
static uint8_t check_arp_icmp(
struct rte_mbuf *pkt,
uint64_t pkt_mask,
@@ -219,123 +205,6 @@ uint64_t nextPowerOf2(uint64_t n)
return n;
}
-void remove_local_cache(uint8_t port)
-{
- link_hw_laddr_valid[port] = 0;
-}
-
-/**
- * Function to get IPv4-IP NH from thread local array
- *
- * @params ip
- * IPv4 - IP
- * @params port
- * NH port number
- * @params nhip
- * NHIP of IPv4 type
- * @params p_nat
- * CGNAPT pipeline ptr
- *
- * @return
- * 1 on success, 0 for failure
- */
-
-static uint32_t local_get_nh_ipv4(
- uint32_t ip,
- uint32_t *port,
- uint32_t *nhip,
- struct pipeline_cgnapt *p_nat)
-{
- int i;
- for (i = 0; i < p_nat->local_lib_arp_route_ent_cnt; i++) {
- if (((p_nat->local_lib_arp_route_table[i].ip &
- p_nat->local_lib_arp_route_table[i].mask) ==
- (ip & p_nat->local_lib_arp_route_table[i].mask))) {
- *port = p_nat->local_lib_arp_route_table[i].port;
-
- *nhip = p_nat->local_lib_arp_route_table[i].nh;
- return 1;
- }
- }
- return 0;
-}
-
-/**
- * Function to make local copy for NH of type IPv4
- *
- * @params dest_if
- * Physical port number
- * @params p_nat
- * CGNAPT pipeline ptr
- *
- */
-
-static void do_local_nh_ipv4_cache(
- uint32_t dest_if,
- struct pipeline_cgnapt *p_nat)
-{
- return;
-}
-
-
-/**
- * Function to get IPv6-IP NH from thread local array
- *
- * @params ip
- * Pointer to starting addr of IPv6
- * @params port
- * NH port number
- * @params nhip
- * NHIP of IPv6 type
- * @params p_nat
- * CGNAPT pipeline ptr
- *
- * @return
- * 1 on success, 0 for failure
- */
-
-static uint32_t local_get_nh_ipv6(
- uint8_t *ip,
- uint32_t *port,
- uint8_t nhip[],
- struct pipeline_cgnapt *p_nat)
-{
- int i = 0;
- uint8_t netmask_ipv6[16];
- uint8_t k = 0, l = 0, depthflags = 0, depthflags1 = 0;
-
- for (i = 0; i < p_nat->local_lib_nd_route_ent_cnt; i++) {
-
- convert_prefixlen_to_netmask_ipv6(
- p_nat->local_lib_nd_route_table[i].depth,
- netmask_ipv6);
-
- for (k = 0; k < 16; k++)
- if (p_nat->local_lib_nd_route_table[i].ipv6[k] &
- netmask_ipv6[k])
- depthflags++;
-
- for (l = 0; l < 16; l++)
- if (ip[l] & netmask_ipv6[l])
- depthflags1++;
-
- int j = 0;
- if (depthflags == depthflags1) {
- *port = p_nat->local_lib_nd_route_table[i].port;
-
- for (j = 0; j < 16; j++)
- nhip[j] = p_nat->local_lib_nd_route_table[i].
- nhipv6[j];
- return 1;
- }
-
- depthflags = 0;
- depthflags1 = 0;
- }
- return 0;
-}
-
-
#ifdef SIP_ALG
/* Commented code may be required for future usage, Please keep it*/
#if 0
@@ -2078,7 +1947,7 @@ static int cgnapt_in_port_ah_mix(struct rte_pipeline *rte_p,
uint8_t nh_ipv6[16];
uint32_t nhip = 0;
- uint32_t dest_if = 0xff;
+ uint32_t dest_if = INVALID_DESTIF;
uint32_t ret;
uint16_t *outport_id =
@@ -2091,52 +1960,54 @@ static int cgnapt_in_port_ah_mix(struct rte_pipeline *rte_p,
&& rte_be_to_cpu_16(*dst_port) == 53) {
p_nat->invalid_packets |= 1LLU << pkt_index;
p_nat->naptDroppedPktCount++;
- #ifdef CGNAPT_DEBUGGING
+#ifdef CGNAPT_DEBUGGING
p_nat->naptDroppedPktCount6++;
- #endif
+#endif
continue;
}
dest_address = rte_bswap32(*dst_addr);
- ret = local_get_nh_ipv4(dest_address, &dest_if,
- &nhip, p_nat);
- if (!ret) {
- dest_if = get_prv_to_pub_port(&dest_address,
- IP_VERSION_4);
- if (dest_if == INVALID_DESTIF) {
- p_nat->invalid_packets |=
- 1LLU << pkt_index;
- p_nat->naptDroppedPktCount++;
- #ifdef CGNAPT_DEBUGGING
- p_nat->naptDroppedPktCount6++;
- #endif
- continue;
- }
- do_local_nh_ipv4_cache(dest_if, p_nat);
- }
+ /* Gateway Proc Starts */
- *outport_id = p_nat->outport_id[dest_if];
- struct arp_entry_data *ret_arp_data;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+ struct arp_entry_data *ret_arp_data = NULL;
+ uint32_t src_phy_port = *src_port;
- if (unlikely(ret_arp_data == NULL)) {
+ gw_get_nh_port_ipv4(dest_address,
+ &dest_if, &nhip);
- #ifdef CGNAPT_DEBUGGING
- printf("%s: NHIP Not Found, nhip: %x, "
- "outport_id: %d\n", __func__, nhip,
- *outport_id);
- #endif
- /* Drop the pkt */
- p_nat->invalid_packets |= pkt_mask;
+ if (dest_if == INVALID_DESTIF) {
+ p_nat->invalid_packets |=
+ 1LLU << pkt_index;
p_nat->naptDroppedPktCount++;
-
- #ifdef CGNAPT_DEBUGGING
- p_nat->naptDroppedPktCount4++;
- #endif
+#ifdef CGNAPT_DEBUGGING
+ p_nat->naptDroppedPktCount6++;
+#endif
continue;
}
+ *outport_id = p_nat->outport_id[dest_if];
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if, &hw_addr);
+
+ if (unlikely(ret_arp_data == NULL)) {
+
+ #ifdef CGNAPT_DEBUGGING
+ printf("%s: NHIP Not Found, nhip: %x, "
+ "outport_id: %d\n", __func__, nhip,
+ *outport_id);
+ #endif
+ /* Drop the pkt */
+ p_nat->invalid_packets |= pkt_mask;
+ p_nat->naptDroppedPktCount++;
+
+ #ifdef CGNAPT_DEBUGGING
+ p_nat->naptDroppedPktCount4++;
+ #endif
+ continue;
+ }
+
+ /* Gateway Proc Ends */
+
if (ret_arp_data->status == COMPLETE) {
if (ret_arp_data->num_pkts) {
@@ -2267,21 +2138,28 @@ static int cgnapt_in_port_ah_mix(struct rte_pipeline *rte_p,
&entry->data.u.prv_ipv6[0], 16);
memset(nh_ipv6, 0, 16);
struct nd_entry_data *ret_nd_data = NULL;
- ret_nd_data = get_dest_mac_address_ipv6_port((uint8_t *)
- &dst_addr[0], &dest_if,
- &hw_addr, &nh_ipv6[0]);
+
+ dest_if = INVALID_DESTIF;
+
+ uint32_t src_phy_port = pkts[pkt_index]->port;
+
+ gw_get_nh_port_ipv6((uint8_t *) &dst_addr[0],
+ &dest_if, &nh_ipv6[0]);
+
+ ret_nd_data = get_dest_mac_addr_ipv6(&nh_ipv6[0],
+ dest_if, &hw_addr);
*outport_id = p_nat->outport_id[dest_if];
if (nd_cache_dest_mac_present(dest_if)) {
ether_addr_copy(get_link_hw_addr(dest_if),
- (struct ether_addr *)eth_src);
+ (struct ether_addr *)eth_src);
update_nhip_access(dest_if);
if (unlikely(ret_nd_data && ret_nd_data->num_pkts)) {
p_nat->naptedPktCount += ret_nd_data->num_pkts;
nd_send_buffered_pkts(ret_nd_data,
- (struct ether_addr *)eth_dest,
- *outport_id);
+ (struct ether_addr *)eth_dest,
+ *outport_id);
}
} else {
if (unlikely(ret_nd_data == NULL)) {
@@ -2335,46 +2213,49 @@ static int cgnapt_in_port_ah_mix(struct rte_pipeline *rte_p,
} else {
*dst_addr = rte_bswap32(entry->data.u.prv_ip);
dest_address = entry->data.u.prv_ip;
- ret = local_get_nh_ipv4(dest_address, &dest_if,
- &nhip, p_nat);
- if (!ret) {
- dest_if = get_pub_to_prv_port(
- &dest_address, IP_VERSION_4);
+ /* Gateway Proc Starts */
+
+ struct arp_entry_data *ret_arp_data = NULL;
+ dest_if = INVALID_DESTIF;
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address,
+ &dest_if, &nhip);
+
if (dest_if == INVALID_DESTIF) {
p_nat->invalid_packets |=
1LLU << pkt_index;
p_nat->naptDroppedPktCount++;
- #ifdef CGNAPT_DEBUGGING
+#ifdef CGNAPT_DEBUGGING
p_nat->naptDroppedPktCount6++;
- #endif
+#endif
continue;
}
- do_local_nh_ipv4_cache(dest_if, p_nat);
- };
*outport_id = p_nat->outport_id[dest_if];
- struct arp_entry_data *ret_arp_data;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip,
+ dest_if, (struct ether_addr *)eth_dest);
if (unlikely(ret_arp_data == NULL)) {
- #ifdef CGNAPT_DEBUGGING
+#ifdef CGNAPT_DEBUGGING
printf("%s: NHIP Not Found, nhip: %x, "
- "outport_id: %d\n", __func__, nhip,
- *outport_id);
- #endif
-
+ "outport_id: %d\n", __func__, nhip,
+ *outport_id);
+#endif
/* Drop the pkt */
p_nat->invalid_packets |= pkt_mask;
p_nat->naptDroppedPktCount++;
- #ifdef CGNAPT_DEBUGGING
+#ifdef CGNAPT_DEBUGGING
p_nat->naptDroppedPktCount4++;
- #endif
+#endif
continue;
}
+ /* Gateway Proc Ends */
+
if (ret_arp_data->status == COMPLETE) {
if (ret_arp_data->num_pkts) {
@@ -3713,7 +3594,7 @@ pkt_work_cgnapt_ipv4_prv(
uint8_t protocol = RTE_MBUF_METADATA_UINT8(pkt, PROT_OFST_IP4);
- uint32_t dest_if = 0xff; /* Added for Multiport */
+ uint32_t dest_if = INVALID_DESTIF; /* Added for Multiport */
uint16_t *outport_id =
RTE_MBUF_METADATA_UINT16_PTR(pkt, cgnapt_meta_offset);
@@ -3822,7 +3703,6 @@ pkt_work_cgnapt_ipv4_prv(
if (entry->data.ttl == NAPT_ENTRY_STALE)
entry->data.ttl = NAPT_ENTRY_VALID;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
/* Egress */
@@ -3840,8 +3720,14 @@ pkt_work_cgnapt_ipv4_prv(
dest_address = rte_bswap32(*dst_addr);
uint32_t nhip = 0;
struct arp_entry_data *ret_arp_data = NULL;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
+
*outport_id = p_nat->outport_id[dest_if];
if (arp_cache_dest_mac_present(dest_if)) {
@@ -3850,7 +3736,7 @@ pkt_work_cgnapt_ipv4_prv(
if (unlikely(ret_arp_data && ret_arp_data->num_pkts)) {
p_nat->naptedPktCount += ret_arp_data->num_pkts;
arp_send_buffered_pkts(ret_arp_data,
- (struct ether_addr *)eth_dest, *outport_id);
+ (struct ether_addr *)eth_dest, *outport_id);
}
} else {
@@ -4083,7 +3969,7 @@ pkt_work_cgnapt_ipv4_pub(
uint8_t protocol = RTE_MBUF_METADATA_UINT8(pkt, PROT_OFST_IP4);
- uint32_t dest_if = 0xff; /* Added for Multiport */
+ uint32_t dest_if = INVALID_DESTIF; /* Added for Multiport */
uint16_t *outport_id =
RTE_MBUF_METADATA_UINT16_PTR(pkt, cgnapt_meta_offset);
@@ -4166,7 +4052,6 @@ pkt_work_cgnapt_ipv4_pub(
if (entry->data.ttl == NAPT_ENTRY_STALE)
entry->data.ttl = NAPT_ENTRY_VALID;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
/* Multiport Changes */
@@ -4188,8 +4073,13 @@ pkt_work_cgnapt_ipv4_pub(
dest_address = entry->data.u.prv_ip;
struct arp_entry_data *ret_arp_data = NULL;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
*outport_id = p_nat->outport_id[dest_if];
if (arp_cache_dest_mac_present(dest_if)) {
@@ -4441,7 +4331,7 @@ pkt4_work_cgnapt_ipv4_prv(
__rte_unused void *arg,
struct pipeline_cgnapt *p_nat)
{
- uint32_t dest_if = 0xff; /* Added for Multiport */
+ uint32_t dest_if = INVALID_DESTIF; /* Added for Multiport */
struct rte_mbuf *pkt;
uint8_t i;
uint8_t pkt_num;
@@ -4602,7 +4492,6 @@ pkt4_work_cgnapt_ipv4_prv(
if (entry->data.ttl == NAPT_ENTRY_STALE)
entry->data.ttl = NAPT_ENTRY_VALID;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
/*Multiport Changes */
uint32_t nhip = 0;
@@ -4626,9 +4515,15 @@ pkt4_work_cgnapt_ipv4_prv(
dest_address = rte_bswap32(*dst_addr);
struct arp_entry_data *ret_arp_data = NULL;
uint64_t start, end;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
+
*outport_id = p_nat->outport_id[dest_if];
+
if (arp_cache_dest_mac_present(dest_if)) {
ether_addr_copy(get_link_hw_addr(dest_if),
(struct ether_addr *)eth_src);
@@ -4882,7 +4777,7 @@ pkt4_work_cgnapt_ipv4_pub(
uint8_t protocol = RTE_MBUF_METADATA_UINT8(pkt, PROT_OFST_IP4);
- uint32_t dest_if = 0xff; /* Added for Multiport */
+ uint32_t dest_if = INVALID_DESTIF; /* Added for Multiport */
uint16_t *outport_id =
RTE_MBUF_METADATA_UINT16_PTR(pkt, cgnapt_meta_offset);
@@ -4971,7 +4866,6 @@ pkt4_work_cgnapt_ipv4_pub(
if (entry->data.ttl == NAPT_ENTRY_STALE)
entry->data.ttl = NAPT_ENTRY_VALID;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
/* Multiport Changes */
uint32_t nhip = 0;
@@ -4991,23 +4885,29 @@ pkt4_work_cgnapt_ipv4_pub(
}
dest_address = entry->data.u.prv_ip;
struct arp_entry_data *ret_arp_data = NULL;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
+
*outport_id = p_nat->outport_id[dest_if];
- if (arp_cache_dest_mac_present(dest_if)) {
- ether_addr_copy(get_link_hw_addr(dest_if), (struct ether_addr *)eth_src);
- update_nhip_access(dest_if);
+ if (arp_cache_dest_mac_present(dest_if)) {
+ ether_addr_copy(get_link_hw_addr(dest_if),
+ (struct ether_addr *)eth_src);
+ update_nhip_access(dest_if);
- if (ret_arp_data && ret_arp_data->num_pkts) {
- p_nat->naptedPktCount += ret_arp_data->num_pkts;
- arp_send_buffered_pkts(ret_arp_data,
- (struct ether_addr *)eth_dest, *outport_id);
- }
+ if (ret_arp_data && ret_arp_data->num_pkts) {
+ p_nat->naptedPktCount += ret_arp_data->num_pkts;
+ arp_send_buffered_pkts(ret_arp_data,
+ (struct ether_addr *)eth_dest, *outport_id);
+ }
- } else {
+ } else {
- if (unlikely(ret_arp_data == NULL)) {
+ if (unlikely(ret_arp_data == NULL)) {
#ifdef CGNAPT_DEBUGGING
printf("%s: NHIP Not Found, nhip: %x, "
@@ -6058,7 +5958,6 @@ pkt_work_cgnapt_ipv6_prv(
struct ipv6_hdr ipv6_hdr;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
uint32_t nhip = 0;
/* Egress */
@@ -6164,9 +6063,16 @@ pkt_work_cgnapt_ipv6_prv(
#endif
struct arp_entry_data *ret_arp_data;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
+
*outport_id = p_nat->outport_id[dest_if];
+
if (arp_cache_dest_mac_present(dest_if)) {
ether_addr_copy(get_link_hw_addr(dest_if),
(struct ether_addr *)eth_src);
@@ -6342,11 +6248,16 @@ pkt_work_cgnapt_ipv6_pub(
memset(nh_ipv6, 0, 16);
struct nd_entry_data *ret_nd_data = NULL;
- ret_nd_data = get_dest_mac_address_ipv6_port(
- &dest_addr_ipv6[0],
- &dest_if,
- (struct ether_addr *)eth_dest,
- &nh_ipv6[0]);
+
+ dest_if = INVALID_DESTIF;
+
+ uint32_t src_phy_port = pkt->port;
+
+ gw_get_nh_port_ipv6((uint8_t *) &dest_addr_ipv6[0],
+ &dest_if, &nh_ipv6[0]);
+
+ ret_nd_data = get_dest_mac_addr_ipv6(&nh_ipv6[0],
+ dest_if, (struct ether_addr *)eth_dest);
*outport_id = p_nat->outport_id[dest_if];
@@ -6536,7 +6447,6 @@ pkt4_work_cgnapt_ipv6_prv(
p_nat->entries[pkt_num] = &(entry->head);
struct ipv6_hdr ipv6_hdr;
- struct ether_addr hw_addr;
uint32_t dest_address = 0;
uint8_t nh_ipv6[16];
uint32_t nhip = 0;
@@ -6645,15 +6555,18 @@ pkt4_work_cgnapt_ipv6_prv(
{
struct arp_entry_data *ret_arp_data;
- ret_arp_data = get_dest_mac_addr_port(dest_address,
- &dest_if, (struct ether_addr *)eth_dest);
+ uint32_t src_phy_port = *src_port;
+
+ gw_get_nh_port_ipv4(dest_address, &dest_if, &nhip);
+
+ ret_arp_data = get_dest_mac_addr_ipv4(nhip, dest_if,
+ (struct ether_addr *)eth_dest);
*outport_id = p_nat->outport_id[dest_if];
if (arp_cache_dest_mac_present(dest_if)) {
ether_addr_copy(get_link_hw_addr(dest_if),
(struct ether_addr *)eth_src);
update_nhip_access(dest_if);
-
if (unlikely(ret_arp_data && ret_arp_data->num_pkts)) {
p_nat->naptedPktCount += ret_arp_data->num_pkts;
arp_send_buffered_pkts(ret_arp_data,
@@ -6846,10 +6759,15 @@ pkt4_work_cgnapt_ipv6_pub(
memset(nh_ipv6, 0, 16);
struct nd_entry_data *ret_nd_data = NULL;
- ret_nd_data = get_dest_mac_address_ipv6_port
- (&dest_addr_ipv6[0], &dest_if,
- (struct ether_addr *)eth_dest, &nh_ipv6[0]);
+ dest_if = INVALID_DESTIF;
+
+ uint32_t src_phy_port = pkt->port;
+
+ gw_get_nh_port_ipv6((uint8_t *) &dest_addr_ipv6[0],
+ &dest_if, &nh_ipv6[0]);
+ ret_nd_data = get_dest_mac_addr_ipv6(&nh_ipv6[0],
+ dest_if, (struct ether_addr *)eth_dest);
*outport_id = p_nat->outport_id[dest_if];
if (nd_cache_dest_mac_present(dest_if)) {