--- /dev/null
+/*
+ * proxy_node.c: dhcpv6 proxy node processing
+ *
+ * Copyright (c) 2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/dhcpv6/proxy.h>
+#include <vnet/fib/ip6_fib.h>
+
+static char * dhcpv6_proxy_error_strings[] = {
+#define dhcpv6_proxy_error(n,s) s,
+#include "proxy_error.def"
+#undef dhcpv6_proxy_error
+};
+
+#define foreach_dhcpv6_proxy_to_server_input_next \
+ _ (DROP, "error-drop") \
+ _ (LOOKUP, "ip6-lookup") \
+ _ (SEND_TO_CLIENT, "dhcpv6-proxy-to-client")
+
+
+typedef enum {
+#define _(s,n) DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_##s,
+ foreach_dhcpv6_proxy_to_server_input_next
+#undef _
+ DHCPV6_PROXY_TO_SERVER_INPUT_N_NEXT,
+} dhcpv6_proxy_to_server_input_next_t;
+
+typedef struct {
+ /* 0 => to server, 1 => to client */
+ int which;
+ u8 packet_data[64];
+ u32 error;
+ u32 sw_if_index;
+ u32 original_sw_if_index;
+} dhcpv6_proxy_trace_t;
+
+vlib_node_registration_t dhcpv6_proxy_to_server_node;
+vlib_node_registration_t dhcpv6_proxy_to_client_node;
+
+
+u8 * format_dhcpv6_proxy_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ dhcpv6_proxy_trace_t * t = va_arg (*args, dhcpv6_proxy_trace_t *);
+
+ if (t->which == 0)
+ s = format (s, "DHCPV6 proxy: sent to server %U",
+ format_ip6_address, &t->packet_data, sizeof (ip6_address_t));
+ else
+ s = format (s, "DHCPV6 proxy: sent to client from %U",
+ format_ip6_address, &t->packet_data, sizeof (ip6_address_t));
+ if (t->error != (u32)~0)
+ s = format (s, " error: %s\n", dhcpv6_proxy_error_strings[t->error]);
+
+ s = format (s, " original_sw_if_index: %d, sw_if_index: %d\n",
+ t->original_sw_if_index, t->sw_if_index);
+
+ return s;
+}
+
+u8 * format_dhcpv6_proxy_header_with_length (u8 * s, va_list * args)
+{
+ dhcpv6_header_t * h = va_arg (*args, dhcpv6_header_t *);
+ u32 max_header_bytes = va_arg (*args, u32);
+ u32 header_bytes;
+
+ header_bytes = sizeof (h[0]);
+ if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ return format (s, "dhcpv6 header truncated");
+
+ s = format (s, "DHCPV6 Proxy");
+
+ return s;
+}
+/* get first interface address */
+static ip6_address_t *
+ip6_interface_first_global_or_site_address (ip6_main_t * im, u32 sw_if_index)
+{
+ ip_lookup_main_t * lm = &im->lookup_main;
+ ip_interface_address_t * ia = 0;
+ ip6_address_t * result = 0;
+
+ foreach_ip_interface_address (lm, ia, sw_if_index,
+ 1 /* honor unnumbered */,
+ ({
+ ip6_address_t * a = ip_interface_address_get_address (lm, ia);
+ if ((a->as_u8[0] & 0xe0) == 0x20 ||
+ (a->as_u8[0] & 0xfe) == 0xfc) {
+ result = a;
+ break;
+ }
+ }));
+ return result;
+}
+
+/* get first interface address */
+static ip6_address_t *
+ip6_interface_first_address (ip6_main_t * im, u32 sw_if_index)
+{
+ ip_lookup_main_t * lm = &im->lookup_main;
+ ip_interface_address_t * ia = 0;
+ ip6_address_t * result = 0;
+
+ foreach_ip_interface_address (lm, ia, sw_if_index,
+ 1 /* honor unnumbered */,
+ ({
+ ip6_address_t * a = ip_interface_address_get_address (lm, ia);
+ result = a;
+ break;
+ }));
+ return result;
+}
+
+static inline void copy_ip6_address (ip6_address_t *dst, ip6_address_t *src)
+{
+
+ dst->as_u64[0] = src->as_u64[0];
+ dst->as_u64[1] = src->as_u64[1];
+}
+
+static uword
+dhcpv6_proxy_to_server_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ u32 n_left_from, next_index, * from, * to_next;
+ dhcpv6_proxy_main_t * dpm = &dhcpv6_proxy_main;
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ u32 pkts_to_server=0, pkts_to_client=0, pkts_no_server=0;
+ u32 pkts_no_interface_address=0, pkts_no_exceeding_max_hop=0;
+ u32 pkts_no_src_address=0;
+ u32 pkts_wrong_msg_type=0;
+ u32 pkts_too_big=0;
+ ip6_main_t * im = &ip6_main;
+ ip6_fib_t * fib;
+ ip6_address_t * src;
+ int bogus_length;
+ dhcpv6_server_t * server;
+ u32 rx_fib_idx = 0, server_fib_idx = 0;
+ u32 server_idx;
+ u32 fib_id1 = 0;
+
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index,
+ to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ vnet_main_t *vnm = vnet_get_main();
+ u32 sw_if_index = 0;
+ u32 rx_sw_if_index = 0;
+ vnet_sw_interface_t *swif;
+ u32 bi0;
+ vlib_buffer_t * b0;
+ udp_header_t * u0, *u1;
+ dhcpv6_header_t * h0; // client msg hdr
+ ip6_header_t * ip0, *ip1;
+ ip6_address_t _ia0, *ia0=&_ia0;
+ u32 next0;
+ u32 error0 = (u32) ~0;
+ dhcpv6_option_t *fwd_opt;
+ dhcpv6_relay_hdr_t *r1;
+ u16 len;
+ dhcpv6_int_id_t *id1;
+ dhcpv6_vss_t *vss1;
+ dhcpv6_client_mac_t *cmac; // client mac
+ ethernet_header_t * e_h0;
+ u8 client_src_mac[6];
+ vlib_buffer_free_list_t *fl;
+
+ uword *p_vss;
+ u32 oui1=0;
+ dhcpv6_vss_info *vss;
+
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ h0 = vlib_buffer_get_current (b0);
+
+ /*
+ * udp_local hands us the DHCPV6 header.
+ */
+ u0 = (void *)h0 -(sizeof(*u0));
+ ip0 = (void *)u0 -(sizeof(*ip0));
+ e_h0 = (void *)ip0 - ethernet_buffer_header_size(b0);
+
+ clib_memcpy(client_src_mac, e_h0->src_address, 6);
+
+ switch (h0->u.msg_type) {
+ case DHCPV6_MSG_SOLICIT:
+ case DHCPV6_MSG_REQUEST:
+ case DHCPV6_MSG_CONFIRM:
+ case DHCPV6_MSG_RENEW:
+ case DHCPV6_MSG_REBIND:
+ case DHCPV6_MSG_RELEASE:
+ case DHCPV6_MSG_DECLINE:
+ case DHCPV6_MSG_INFORMATION_REQUEST:
+ case DHCPV6_MSG_RELAY_FORW:
+ /* send to server */
+ break;
+ case DHCPV6_MSG_RELAY_REPL:
+ /* send to client */
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_SEND_TO_CLIENT;
+ error0 = 0;
+ pkts_to_client++;
+ goto do_enqueue;
+ default:
+ /* drop the packet */
+ pkts_wrong_msg_type++;
+ error0 = DHCPV6_PROXY_ERROR_WRONG_MESSAGE_TYPE;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ goto do_trace;
+
+ }
+
+ /* Send to DHCPV6 server via the configured FIB */
+ rx_sw_if_index = sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+ rx_fib_idx = im->fib_index_by_sw_if_index [rx_sw_if_index];
+ server_idx = dpm->dhcp6_server_index_by_rx_fib_index[rx_fib_idx];
+
+ if (PREDICT_FALSE (pool_is_free_index (dpm->dhcp6_servers,
+ server_idx)))
+ {
+ no_server:
+ error0 = DHCPV6_PROXY_ERROR_NO_SERVER;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ pkts_no_server++;
+ goto do_trace;
+ }
+
+ server = pool_elt_at_index(dpm->dhcp6_servers, server_idx);
+ if (server->valid == 0)
+ goto no_server;
+
+ server_fib_idx = server->server_fib6_index;
+ vnet_buffer(b0)->sw_if_index[VLIB_TX] = server_fib_idx;
+
+
+ /* relay-option header pointer */
+ vlib_buffer_advance(b0, -(sizeof(*fwd_opt)));
+ fwd_opt = vlib_buffer_get_current(b0);
+ /* relay message header pointer */
+ vlib_buffer_advance(b0, -(sizeof(*r1)));
+ r1 = vlib_buffer_get_current(b0);
+
+ vlib_buffer_advance(b0, -(sizeof(*u1)));
+ u1 = vlib_buffer_get_current(b0);
+
+ vlib_buffer_advance(b0, -(sizeof(*ip1)));
+ ip1 = vlib_buffer_get_current(b0);
+
+ /* fill in all that rubbish... */
+ len = clib_net_to_host_u16(u0->length) - sizeof(udp_header_t);
+ copy_ip6_address(&r1->peer_addr, &ip0->src_address);
+
+ r1->msg_type = DHCPV6_MSG_RELAY_FORW;
+ fwd_opt->length = clib_host_to_net_u16(len);
+ fwd_opt->option = clib_host_to_net_u16(DHCPV6_OPTION_RELAY_MSG);
+
+ r1->hop_count++;
+ r1->hop_count = (h0->u.msg_type != DHCPV6_MSG_RELAY_FORW) ? 0 : r1->hop_count;
+
+ if (PREDICT_FALSE(r1->hop_count >= HOP_COUNT_LIMIT))
+ {
+ error0 = DHCPV6_RELAY_PKT_DROP_MAX_HOPS;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ pkts_no_exceeding_max_hop++;
+ goto do_trace;
+ }
+
+
+ /* If relay-fwd and src address is site or global unicast address */
+ if (h0->u.msg_type == DHCPV6_MSG_RELAY_FORW &&
+ ((ip0->src_address.as_u8[0] & 0xe0) == 0x20 ||
+ (ip0->src_address.as_u8[0] & 0xfe) == 0xfc))
+ {
+ /* Set link address to zero */
+ r1->link_addr.as_u64[0] = 0;
+ r1->link_addr.as_u64[1] = 0;
+ goto link_address_set;
+ }
+
+ /* if receiving interface is unnumbered, use receiving interface
+ * IP address as link address, otherwise use the loopback interface
+ * IP address as link address.
+ */
+
+ swif = vnet_get_sw_interface (vnm, rx_sw_if_index);
+ if (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
+ sw_if_index = swif->unnumbered_sw_if_index;
+
+ ia0 = ip6_interface_first_global_or_site_address(&ip6_main, sw_if_index);
+ if (ia0 == 0)
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_INTERFACE_ADDRESS;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ pkts_no_interface_address++;
+ goto do_trace;
+ }
+
+ copy_ip6_address(&r1->link_addr, ia0);
+
+ link_address_set:
+ fl = vlib_buffer_get_free_list (vm, b0->free_list_index);
+
+ if ((b0->current_length+sizeof(*id1)+sizeof(*vss1)+sizeof(*cmac))
+ > fl->n_data_bytes)
+ {
+ error0 = DHCPV6_PROXY_ERROR_PKT_TOO_BIG;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ pkts_too_big++;
+ goto do_trace;
+ }
+
+ id1 = (dhcpv6_int_id_t *) (((uword) ip1) + b0->current_length);
+ b0->current_length += (sizeof (*id1));
+
+
+ fib = ip6_fib_get (rx_fib_idx);
+
+ //TODO: Revisit if hash makes sense here
+ p_vss = hash_get (dpm->vss_index_by_vrf_id,
+ fib->table_id);
+ if (p_vss)
+ {
+ vss = pool_elt_at_index (dpm->vss, p_vss[0]);
+ oui1 = vss->vpn_id.oui;
+ fib_id1 = vss->vpn_id.fib_id;
+ }
+
+ id1->opt.option = clib_host_to_net_u16(DHCPV6_OPTION_INTERFACE_ID);
+ id1->opt.length = clib_host_to_net_u16(sizeof(rx_sw_if_index));
+ id1->int_idx = clib_host_to_net_u32(rx_sw_if_index);
+
+ u1->length =0;
+ if (h0->u.msg_type != DHCPV6_MSG_RELAY_FORW)
+ {
+ cmac = (dhcpv6_client_mac_t *) (((uword) ip1) + b0->current_length);
+ b0->current_length += (sizeof (*cmac));
+ cmac->opt.length =clib_host_to_net_u16(sizeof(*cmac) -
+ sizeof(cmac->opt));
+ cmac->opt.option = clib_host_to_net_u16(DHCPV6_OPTION_CLIENT_LINK_LAYER_ADDRESS);
+ cmac->link_type = clib_host_to_net_u16(1); // ethernet
+ clib_memcpy(cmac->data, client_src_mac, 6);
+ u1->length += sizeof(*cmac);
+ }
+ if (server->insert_vss !=0 ) {
+ vss1 = (dhcpv6_vss_t *) (((uword) ip1) + b0->current_length);
+ b0->current_length += (sizeof (*vss1));
+ vss1->opt.length =clib_host_to_net_u16(sizeof(*vss1) -
+ sizeof(vss1->opt));
+ vss1->opt.option = clib_host_to_net_u16(DHCPV6_OPTION_VSS);
+ vss1->data[0] = 1; // type
+ vss1->data[1] = oui1>>16 & 0xff;
+ vss1->data[2] = oui1>>8 & 0xff;
+ vss1->data[3] = oui1 & 0xff;
+ vss1->data[4] = fib_id1>>24 & 0xff;
+ vss1->data[5] = fib_id1>>16 & 0xff;
+ vss1->data[6] = fib_id1>>8 & 0xff;
+ vss1->data[7] = fib_id1 & 0xff;
+ u1->length += sizeof(*vss1);
+ }
+
+ pkts_to_server++;
+ u1->checksum = 0;
+ u1->src_port = clib_host_to_net_u16(UDP_DST_PORT_dhcpv6_to_client);
+ u1->dst_port = clib_host_to_net_u16(UDP_DST_PORT_dhcpv6_to_server);
+
+ u1->length =
+ clib_host_to_net_u16( clib_net_to_host_u16(fwd_opt->length) +
+ sizeof(*r1) + sizeof(*fwd_opt) +
+ sizeof(*u1) + sizeof(*id1) + u1->length);
+
+ memset(ip1, 0, sizeof(*ip1));
+ ip1->ip_version_traffic_class_and_flow_label = 0x60;
+ ip1->payload_length = u1->length;
+ ip1->protocol = PROTO_UDP;
+ ip1->hop_limit = HOP_COUNT_LIMIT;
+ src = (server->dhcp6_server.as_u64[0] || server->dhcp6_server.as_u64[1]) ?
+ &server->dhcp6_server : &dpm->all_dhcpv6_server_address;
+ copy_ip6_address(&ip1->dst_address, src);
+
+
+ ia0 = ip6_interface_first_global_or_site_address
+ (&ip6_main, vnet_buffer(b0)->sw_if_index[VLIB_RX]);
+
+ src = (server->dhcp6_src_address.as_u64[0] || server->dhcp6_src_address.as_u64[1]) ?
+ &server->dhcp6_src_address : ia0;
+ if (ia0 == 0)
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_SRC_ADDRESS;
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_DROP;
+ pkts_no_src_address++;
+ goto do_trace;
+ }
+
+ copy_ip6_address (&ip1->src_address, src);
+
+
+ u1->checksum = ip6_tcp_udp_icmp_compute_checksum(vm, b0, ip1,
+ &bogus_length);
+ ASSERT(bogus_length == 0);
+
+ next0 = DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP;
+
+ do_trace:
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ dhcpv6_proxy_trace_t *tr = vlib_add_trace (vm, node,
+ b0, sizeof (*tr));
+ tr->which = 0; /* to server */
+ tr->error = error0;
+ tr->original_sw_if_index = rx_sw_if_index;
+ tr->sw_if_index = sw_if_index;
+ if (DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP == next0)
+ copy_ip6_address((ip6_address_t *)&tr->packet_data[0], &server->dhcp6_server);
+ }
+
+ do_enqueue:
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_RELAY_TO_CLIENT,
+ pkts_to_client);
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_RELAY_TO_SERVER,
+ pkts_to_server);
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_NO_INTERFACE_ADDRESS,
+ pkts_no_interface_address);
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_WRONG_MESSAGE_TYPE,
+ pkts_wrong_msg_type);
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_NO_SRC_ADDRESS,
+ pkts_no_src_address);
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_server_node.index,
+ DHCPV6_PROXY_ERROR_PKT_TOO_BIG,
+ pkts_too_big);
+ return from_frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (dhcpv6_proxy_to_server_node) = {
+ .function = dhcpv6_proxy_to_server_input,
+ .name = "dhcpv6-proxy-to-server",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = DHCPV6_PROXY_N_ERROR,
+ .error_strings = dhcpv6_proxy_error_strings,
+
+ .n_next_nodes = DHCPV6_PROXY_TO_SERVER_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [DHCPV6_PROXY_TO_SERVER_INPUT_NEXT_##s] = n,
+ foreach_dhcpv6_proxy_to_server_input_next
+#undef _
+ },
+
+ .format_buffer = format_dhcpv6_proxy_header_with_length,
+ .format_trace = format_dhcpv6_proxy_trace,
+#if 0
+ .unformat_buffer = unformat_dhcpv6_proxy_header,
+#endif
+};
+
+static uword
+dhcpv6_proxy_to_client_input (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+
+ u32 n_left_from, * from;
+ ethernet_main_t *em = ethernet_get_main (vm);
+ dhcpv6_proxy_main_t * dm = &dhcpv6_proxy_main;
+ dhcpv6_server_t * server;
+ vnet_main_t * vnm = vnet_get_main();
+ int bogus_length;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ while (n_left_from > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t * b0;
+ udp_header_t * u0, *u1=0;
+ dhcpv6_relay_hdr_t * h0;
+ ip6_header_t * ip1 = 0, *ip0;
+ ip6_address_t _ia0, * ia0 = &_ia0;
+ ip6_address_t client_address;
+ ethernet_interface_t *ei0;
+ ethernet_header_t *mac0;
+ vnet_hw_interface_t *hi0;
+ vlib_frame_t *f0;
+ u32 * to_next0;
+ u32 sw_if_index = ~0;
+ u32 original_sw_if_index = ~0;
+ vnet_sw_interface_t *si0;
+ u32 error0 = (u32)~0;
+ vnet_sw_interface_t *swif;
+ dhcpv6_option_t *r0 = 0, *o;
+ u16 len = 0;
+ u8 interface_opt_flag = 0;
+ u8 relay_msg_opt_flag = 0;
+ ip6_fib_t * svr_fib;
+ ip6_main_t * im = &ip6_main;
+ u32 server_fib_idx, svr_fib_id, client_fib_idx, server_idx;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ h0 = vlib_buffer_get_current (b0);
+
+ if (DHCPV6_MSG_RELAY_REPL != h0->msg_type)
+ {
+ error0 = DHCPV6_PROXY_ERROR_WRONG_MESSAGE_TYPE;
+
+ drop_packet:
+ vlib_node_increment_counter (vm, dhcpv6_proxy_to_client_node.index,
+ error0, 1);
+
+ f0 = vlib_get_frame_to_node (vm, dm->error_drop_node_index);
+ to_next0 = vlib_frame_vector_args (f0);
+ to_next0[0] = bi0;
+ f0->n_vectors = 1;
+ vlib_put_frame_to_node (vm, dm->error_drop_node_index, f0);
+ goto do_trace;
+ }
+ /* hop count seems not need to be checked */
+ if (HOP_COUNT_LIMIT < h0->hop_count)
+ {
+ error0 = DHCPV6_RELAY_PKT_DROP_MAX_HOPS;
+ goto drop_packet;
+ }
+ u0 = (void *)h0 -(sizeof(*u0));
+ ip0 = (void *)u0 -(sizeof(*ip0));
+
+ vlib_buffer_advance (b0, sizeof(*h0));
+ o = vlib_buffer_get_current (b0);
+
+ /* Parse through TLVs looking for option 18 (DHCPV6_OPTION_INTERFACE_ID)
+ _and_ option 9 (DHCPV6_OPTION_RELAY_MSG) option which must be there.
+ Currently assuming no other options need to be processed
+ The interface-ID is the FIB number we need
+ to track down the client-facing interface */
+
+ while ((u8 *) o < (b0->data + b0->current_data + b0->current_length))
+ {
+ if (DHCPV6_OPTION_INTERFACE_ID == clib_net_to_host_u16(o->option))
+ {
+ interface_opt_flag = 1;
+ if (clib_net_to_host_u16(o->length) == sizeof(sw_if_index))
+ sw_if_index = clib_net_to_host_u32(((dhcpv6_int_id_t*)o)->int_idx);
+ if (sw_if_index >= vec_len (im->fib_index_by_sw_if_index))
+ {
+ error0 = DHCPV6_PROXY_ERROR_WRONG_INTERFACE_ID_OPTION;
+ goto drop_packet;
+ }
+ }
+ if (DHCPV6_OPTION_RELAY_MSG == clib_net_to_host_u16(o->option))
+ {
+ relay_msg_opt_flag = 1;
+ r0 = vlib_buffer_get_current (b0);
+ }
+ if ((relay_msg_opt_flag == 1) && (interface_opt_flag == 1))
+ break;
+ vlib_buffer_advance (b0, sizeof(*o) + clib_net_to_host_u16(o->length));
+ o = (dhcpv6_option_t *) (((uword) o) + clib_net_to_host_u16(o->length) + sizeof(*o));
+ }
+
+ if ((relay_msg_opt_flag == 0) || (r0 == 0))
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_RELAY_MESSAGE_OPTION;
+ goto drop_packet;
+ }
+
+ if ((u32)~0 == sw_if_index)
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_CIRCUIT_ID_OPTION;
+ goto drop_packet;
+ }
+
+ //Advance buffer to start of encapsulated DHCPv6 message
+ vlib_buffer_advance (b0, sizeof(*r0));
+
+ client_fib_idx = im->fib_index_by_sw_if_index[sw_if_index];
+ if (client_fib_idx < vec_len(dm->dhcp6_server_index_by_rx_fib_index))
+ server_idx = dm->dhcp6_server_index_by_rx_fib_index[client_fib_idx];
+ else
+ server_idx = 0;
+
+ if (PREDICT_FALSE (pool_is_free_index (dm->dhcp6_servers, server_idx)))
+ {
+ error0 = DHCPV6_PROXY_ERROR_WRONG_INTERFACE_ID_OPTION;
+ goto drop_packet;
+ }
+
+ server = pool_elt_at_index (dm->dhcp6_servers, server_idx);
+ if (server->valid == 0)
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_SERVER;
+ goto drop_packet;
+ }
+
+
+ server_fib_idx = im->fib_index_by_sw_if_index
+ [vnet_buffer(b0)->sw_if_index[VLIB_RX]];
+ svr_fib = ip6_fib_get (server_fib_idx);
+ svr_fib_id = svr_fib->table_id;
+
+ if (svr_fib_id != server->server_fib6_index ||
+ ip0->src_address.as_u64[0] != server->dhcp6_server.as_u64[0] ||
+ ip0->src_address.as_u64[1] != server->dhcp6_server.as_u64[1])
+ {
+ //drop packet if not from server with configured address or FIB
+ error0 = DHCPV6_PROXY_ERROR_BAD_SVR_FIB_OR_ADDRESS;
+ goto drop_packet;
+ }
+
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = original_sw_if_index
+ = sw_if_index;
+
+ swif = vnet_get_sw_interface (vnm, original_sw_if_index);
+ if (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
+ sw_if_index = swif->unnumbered_sw_if_index;
+
+
+ /*
+ * udp_local hands us the DHCPV6 header, need udp hdr,
+ * ip hdr to relay to client
+ */
+ vlib_buffer_advance (b0, -(sizeof(*u1)));
+ u1 = vlib_buffer_get_current (b0);
+
+ vlib_buffer_advance (b0, -(sizeof(*ip1)));
+ ip1 = vlib_buffer_get_current (b0);
+
+ copy_ip6_address(&client_address, &h0->peer_addr);
+
+ ia0 = ip6_interface_first_address (&ip6_main, sw_if_index);
+ if (ia0 == 0)
+ {
+ error0 = DHCPV6_PROXY_ERROR_NO_INTERFACE_ADDRESS;
+ goto drop_packet;
+ }
+
+ len = clib_net_to_host_u16(r0->length);
+ memset(ip1, 0, sizeof(*ip1));
+ copy_ip6_address(&ip1->dst_address, &client_address);
+ u1->checksum = 0;
+ u1->src_port = clib_net_to_host_u16 (UDP_DST_PORT_dhcpv6_to_server);
+ u1->dst_port = clib_net_to_host_u16 (UDP_DST_PORT_dhcpv6_to_client);
+ u1->length = clib_host_to_net_u16 (len + sizeof(udp_header_t));
+
+ ip1->ip_version_traffic_class_and_flow_label =
+ ip0->ip_version_traffic_class_and_flow_label &
+ 0x00000fff;
+ ip1->payload_length = u1->length;
+ ip1->protocol = PROTO_UDP;
+ ip1->hop_limit = HOP_COUNT_LIMIT;
+ copy_ip6_address(&ip1->src_address, ia0);
+
+ u1->checksum = ip6_tcp_udp_icmp_compute_checksum(vm, b0, ip1,
+ &bogus_length);
+ ASSERT(bogus_length == 0);
+
+ vlib_buffer_advance (b0, -(sizeof(ethernet_header_t)));
+ si0 = vnet_get_sw_interface (vnm, original_sw_if_index);
+ if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
+ vlib_buffer_advance (b0, -4 /* space for VLAN tag */);
+
+ mac0 = vlib_buffer_get_current (b0);
+
+ hi0 = vnet_get_sup_hw_interface (vnm, original_sw_if_index);
+ ei0 = pool_elt_at_index (em->interfaces, hi0->hw_instance);
+ clib_memcpy (mac0->src_address, ei0->address, sizeof (ei0->address));
+ memset (&mac0->dst_address, 0xff, sizeof (mac0->dst_address));
+ mac0->type = (si0->type == VNET_SW_INTERFACE_TYPE_SUB) ?
+ clib_net_to_host_u16(0x8100) : clib_net_to_host_u16 (0x86dd);
+
+ if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
+ {
+ u32 * vlan_tag = (u32 *)(mac0+1);
+ u32 tmp;
+ tmp = (si0->sub.id << 16) | 0x0800;
+ *vlan_tag = clib_host_to_net_u32 (tmp);
+ }
+
+ /* $$$ consider adding a dynamic next to the graph node, for performance */
+ f0 = vlib_get_frame_to_node (vm, hi0->output_node_index);
+ to_next0 = vlib_frame_vector_args (f0);
+ to_next0[0] = bi0;
+ f0->n_vectors = 1;
+ vlib_put_frame_to_node (vm, hi0->output_node_index, f0);
+
+ do_trace:
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ dhcpv6_proxy_trace_t *tr = vlib_add_trace (vm, node,
+ b0, sizeof (*tr));
+ tr->which = 1; /* to client */
+ if (ia0)
+ copy_ip6_address((ip6_address_t*)tr->packet_data, ia0);
+ tr->error = error0;
+ tr->original_sw_if_index = original_sw_if_index;
+ tr->sw_if_index = sw_if_index;
+ }
+ }
+ return from_frame->n_vectors;
+
+}
+
+VLIB_REGISTER_NODE (dhcpv6_proxy_to_client_node) = {
+ .function = dhcpv6_proxy_to_client_input,
+ .name = "dhcpv6-proxy-to-client",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = DHCPV6_PROXY_N_ERROR,
+ .error_strings = dhcpv6_proxy_error_strings,
+ .format_buffer = format_dhcpv6_proxy_header_with_length,
+ .format_trace = format_dhcpv6_proxy_trace,
+#if 0
+ .unformat_buffer = unformat_dhcpv6_proxy_header,
+#endif
+};
+
+clib_error_t * dhcpv6_proxy_init (vlib_main_t * vm)
+{
+ dhcpv6_proxy_main_t * dm = &dhcpv6_proxy_main;
+ vlib_node_t * error_drop_node;
+ dhcpv6_server_t * server;
+
+ dm->vlib_main = vm;
+ dm->vnet_main = vnet_get_main();
+ error_drop_node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
+ dm->error_drop_node_index = error_drop_node->index;
+
+ dm->vss_index_by_vrf_id = hash_create (0, sizeof (uword));
+
+ /* RFC says this is the dhcpv6 server address */
+ dm->all_dhcpv6_server_address.as_u64[0] = clib_host_to_net_u64 (0xFF05000000000000);
+ dm->all_dhcpv6_server_address.as_u64[1] = clib_host_to_net_u64 (0x00010003);
+
+ /* RFC says this is the server and agent address */
+ dm->all_dhcpv6_server_relay_agent_address.as_u64[0] = clib_host_to_net_u64 (0xFF02000000000000);
+ dm->all_dhcpv6_server_relay_agent_address.as_u64[1] = clib_host_to_net_u64 (0x00010002);
+
+ udp_register_dst_port (vm, UDP_DST_PORT_dhcpv6_to_client,
+ dhcpv6_proxy_to_client_node.index, 0 /* is_ip6 */);
+
+ udp_register_dst_port (vm, UDP_DST_PORT_dhcpv6_to_server,
+ dhcpv6_proxy_to_server_node.index, 0 /* is_ip6 */);
+
+ /* Create the default server, don't mark it valid */
+ pool_get (dm->dhcp6_servers, server);
+ memset (server, 0, sizeof (*server));
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (dhcpv6_proxy_init);
+
+/* Old API, manipulates a single server (only) shared by all Rx VRFs */
+int dhcpv6_proxy_set_server (ip6_address_t *addr, ip6_address_t *src_address,
+ u32 fib_id, int insert_vss, int is_del)
+{
+ return dhcpv6_proxy_set_server_2 (addr, src_address,
+ 0, fib_id,
+ insert_vss, is_del);
+}
+
+int dhcpv6_proxy_set_server_2 (ip6_address_t *addr, ip6_address_t *src_address,
+ u32 rx_fib_id, u32 server_fib_id,
+ int insert_vss, int is_del)
+{
+ dhcpv6_proxy_main_t * dm = &dhcpv6_proxy_main;
+ dhcpv6_server_t * server = 0;
+ u32 server_fib_index = 0;
+ u32 rx_fib_index = 0;
+
+ rx_fib_index = ip6_fib_table_find_or_create_and_lock(rx_fib_id);
+ server_fib_index = ip6_fib_table_find_or_create_and_lock(server_fib_id);
+
+ if (is_del)
+ {
+
+ if (rx_fib_index >= vec_len(dm->dhcp6_server_index_by_rx_fib_index))
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ server_fib_index = dm->dhcp6_server_index_by_rx_fib_index[rx_fib_index];
+
+ dm->dhcp6_server_index_by_rx_fib_index[rx_fib_index] = 0;
+ server = pool_elt_at_index (dm->dhcp6_servers, server_fib_index);
+ memset (server, 0, sizeof (*server));
+ pool_put (dm->dhcp6_servers, server);
+ return 0;
+ }
+
+ if (addr->as_u64[0] == 0 &&
+ addr->as_u64[1] == 0 )
+ return VNET_API_ERROR_INVALID_DST_ADDRESS;
+
+ if (src_address->as_u64[0] == 0 &&
+ src_address->as_u64[1] == 0)
+ return VNET_API_ERROR_INVALID_SRC_ADDRESS;
+
+ if (rx_fib_id == 0)
+ {
+ server = pool_elt_at_index (dm->dhcp6_servers, 0);
+
+ goto initialize_it;
+ }
+
+ if (rx_fib_index < vec_len(dm->dhcp6_server_index_by_rx_fib_index))
+ {
+ server_fib_index = dm->dhcp6_server_index_by_rx_fib_index[rx_fib_index];
+ if (server_fib_index != 0)
+ {
+ server = pool_elt_at_index (dm->dhcp6_servers, server_fib_index);
+ goto initialize_it;
+ }
+ }
+
+ /*Allocate a new server*/
+ pool_get (dm->dhcp6_servers, server);
+
+ initialize_it:
+
+ copy_ip6_address(&server->dhcp6_server, addr);
+ copy_ip6_address(&server->dhcp6_src_address, src_address);
+ server->server_fib6_index = server_fib_index;
+ server->valid = 1;
+ server->insert_vss = insert_vss;
+
+ vec_validate (dm->dhcp6_server_index_by_rx_fib_index, rx_fib_index);
+ dm->dhcp6_server_index_by_rx_fib_index[rx_fib_index] =
+ server - dm->dhcp6_servers;
+
+ return 0;
+}
+
+static clib_error_t *
+dhcpv6_proxy_set_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ ip6_address_t addr, src_addr;
+ int set_server = 0, set_src_address = 0;
+ u32 rx_fib_id = 0, server_fib_id = 0;
+ int is_del = 0, add_vss = 0;
+
+ while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "server %U",
+ unformat_ip6_address, &addr))
+ set_server = 1;
+ else if (unformat(input, "src-address %U",
+ unformat_ip6_address, &src_addr))
+ set_src_address =1;
+ else if (unformat (input, "server-fib-id %d", &server_fib_id))
+ ;
+ else if (unformat (input, "rx-fib-id %d", &rx_fib_id))
+ ;
+ else if (unformat (input, "add-vss-option")
+ || unformat (input, "insert-option"))
+ add_vss = 1;
+ else if (unformat (input, "delete") ||
+ unformat (input, "del"))
+ is_del = 1;
+ else
+ break;
+ }
+
+ if (is_del || (set_server && set_src_address))
+ {
+ int rv;
+
+ rv = dhcpv6_proxy_set_server_2 (&addr, &src_addr, rx_fib_id,
+ server_fib_id, add_vss, is_del);
+
+ //TODO: Complete the errors
+ switch (rv)
+ {
+ case 0:
+ return 0;
+
+ case -1:
+ return clib_error_return (0, "FIB id %d does not exist", server_fib_id);
+
+ default:
+ return clib_error_return (0, "BUG: rv %d", rv);
+ }
+ }
+ else
+ return clib_error_return (0, "parse error`%U'",
+ format_unformat_error, input);
+}
+
+VLIB_CLI_COMMAND (dhcpv6_proxy_set_command, static) = {
+ .path = "set dhcpv6 proxy",
+ .short_help = "set dhcpv6 proxy [del] server <ipv6-addr> src-address <ipv6-addr> "
+ "[add-vss-option] [server-fib-id <fib-id>] [rx-fib-id <fib-id>] ",
+ .function = dhcpv6_proxy_set_command_fn,
+};
+
+u8 * format_dhcpv6_proxy_server (u8 * s, va_list * args)
+{
+ dhcpv6_proxy_main_t * dm = va_arg (*args, dhcpv6_proxy_main_t *);
+ dhcpv6_server_t * server = va_arg (*args, dhcpv6_server_t *);
+ u32 rx_fib_index = va_arg (*args, u32);
+ ip6_fib_t * rx_fib, * server_fib;
+ u32 server_fib_id = (u32)~0, rx_fib_id = ~0;
+
+ if (dm == 0)
+ {
+ s = format (s, "%=40s%=40s%=14s%=14s%=20s", "Server Address", "Source Address",
+ "Server FIB", "RX FIB", "Insert VSS Option");
+ return s;
+ }
+
+ server_fib = ip6_fib_get(server->server_fib6_index);
+ if (server_fib)
+ server_fib_id= server_fib->table_id;
+
+ rx_fib= ip6_fib_get(rx_fib_index);
+
+ if (rx_fib)
+ rx_fib_id = rx_fib->table_id;
+
+ s = format (s, "%=40U%=40U%=14u%=14u%=20s",
+ format_ip6_address, &server->dhcp6_server,
+ format_ip6_address, &server->dhcp6_src_address,
+ server_fib_id, rx_fib_id,
+ server->insert_vss ? "yes" : "no");
+ return s;
+}
+
+static clib_error_t *
+dhcpv6_proxy_show_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcpv6_proxy_main_t * dm = &dhcpv6_proxy_main;
+ ip6_main_t * im = &ip6_main;
+ int i;
+ u32 server_index;
+ dhcpv6_server_t * server;
+
+ vlib_cli_output (vm, "%U", format_dhcpv6_proxy_server, 0 /* header line */,
+ 0, 0);
+ for (i = 0; i < vec_len (im->fibs); i++)
+ {
+ if (i < vec_len(dm->dhcp6_server_index_by_rx_fib_index))
+ server_index = dm->dhcp6_server_index_by_rx_fib_index[i];
+ else
+ server_index = 0;
+ server = pool_elt_at_index (dm->dhcp6_servers, server_index);
+ if (server->valid)
+ vlib_cli_output (vm, "%U", format_dhcpv6_proxy_server, dm,
+ server, i);
+ }
+ return 0;
+}
+
+VLIB_CLI_COMMAND (dhcpv6_proxy_show_command, static) = {
+ .path = "show dhcpv6 proxy",
+ .short_help = "Display dhcpv6 proxy info",
+ .function = dhcpv6_proxy_show_command_fn,
+};
+
+int dhcpv6_proxy_set_vss(u32 tbl_id,
+ u32 oui,
+ u32 fib_id,
+ int is_del)
+{
+ dhcpv6_proxy_main_t *dm = &dhcpv6_proxy_main;
+ u32 old_oui, old_fib_id;
+ uword *p;
+ dhcpv6_vss_info *v;
+
+ p = hash_get (dm->vss_index_by_vrf_id, tbl_id);
+
+ if (p) {
+ v = pool_elt_at_index (dm->vss, p[0]);
+ if (!v)
+ return VNET_API_ERROR_NO_SUCH_FIB;
+
+ old_oui = v->vpn_id.oui;
+ old_fib_id = v->vpn_id.fib_id;
+
+ if (is_del)
+ {
+ if (old_oui == oui &&
+ old_fib_id == fib_id )
+ {
+ pool_put(dm->vss, v);
+ hash_unset (dm->vss_index_by_vrf_id, tbl_id);
+ return 0;
+ }
+ else
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ pool_put(dm->vss, v);
+ hash_unset (dm->vss_index_by_vrf_id, tbl_id);
+ } else if (is_del)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ pool_get (dm->vss, v);
+ memset (v, ~0, sizeof (*v));
+ v->vpn_id.fib_id = fib_id;
+ v->vpn_id.oui = oui;
+ hash_set (dm->vss_index_by_vrf_id, tbl_id, v - dm->vss);
+
+ return 0;
+}
+
+
+static clib_error_t *
+dhcpv6_vss_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ int is_del = 0, got_new_vss=0;
+ u32 oui=0;
+ u32 fib_id=0, tbl_id=~0;
+
+ while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "oui %d", &oui))
+ got_new_vss = 1;
+ else if (unformat (input, "vpn-id %d", &fib_id))
+ got_new_vss = 1;
+ else if (unformat (input, "table %d", &tbl_id))
+ got_new_vss = 1;
+ else if (unformat(input, "delete") || unformat(input, "del"))
+ is_del = 1;
+ else
+ break;
+ }
+
+ if (tbl_id ==~0)
+ return clib_error_return (0, "no table ID specified.");
+
+ if (is_del || got_new_vss)
+ {
+ int rv;
+
+ rv = dhcpv6_proxy_set_vss(tbl_id, oui, fib_id, is_del);
+ switch (rv)
+ {
+ case 0:
+ return 0;
+
+ case VNET_API_ERROR_NO_SUCH_FIB:
+ return clib_error_return (0, "vss info (oui:%d, vpn-id:%d) not found in table %d.",
+ oui, fib_id, tbl_id);
+
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "vss for table %d not found in pool.",
+ tbl_id);
+
+ default:
+ return clib_error_return (0, "BUG: rv %d", rv);
+ }
+ }
+ else
+ return clib_error_return (0, "parse error`%U'",
+ format_unformat_error, input);
+
+}
+
+VLIB_CLI_COMMAND (dhcpv6_proxy_vss_command, static) = {
+ .path = "set dhcpv6 vss",
+ .short_help = "set dhcpv6 vss table <table-id> oui <oui> vpn-idx <vpn-idx>",
+ .function = dhcpv6_vss_command_fn,
+};
+
+static clib_error_t *
+dhcpv6_vss_show_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+
+{
+ dhcpv6_proxy_main_t * dm = &dhcpv6_proxy_main;
+ dhcpv6_vss_info *v;
+ u32 oui;
+ u32 fib_id;
+ u32 tbl_id;
+ uword index;
+
+ vlib_cli_output (vm, "%=6s%=6s%=12s","Table", "OUI", "VPN ID");
+ hash_foreach (tbl_id, index, dm->vss_index_by_vrf_id,
+ ({
+ v = pool_elt_at_index (dm->vss, index);
+ oui = v->vpn_id.oui;
+ fib_id = v->vpn_id.fib_id;
+ vlib_cli_output (vm, "%=6d%=6d%=12d",
+ tbl_id, oui, fib_id);
+ }));
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (dhcpv6_proxy_vss_show_command, static) = {
+ .path = "show dhcpv6 vss",
+ .short_help = "show dhcpv6 VSS",
+ .function = dhcpv6_vss_show_command_fn,
+};
+
+static clib_error_t *
+dhcpv6_link_address_show_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+
+{
+ dhcpv6_proxy_main_t *dm = &dhcpv6_proxy_main;
+ vnet_main_t *vnm = vnet_get_main();
+ u32 sw_if_index0=0, sw_if_index;
+ ip6_address_t *ia0;
+ vnet_sw_interface_t *swif;
+
+ while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
+ {
+
+ if (unformat(input, "%U",
+ unformat_vnet_sw_interface, dm->vnet_main, &sw_if_index0))
+ {
+ swif = vnet_get_sw_interface (vnm, sw_if_index0);
+ sw_if_index = (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) ?
+ swif->unnumbered_sw_if_index : sw_if_index0;
+ ia0 = ip6_interface_first_address(&ip6_main, sw_if_index);
+ if (ia0)
+ {
+ vlib_cli_output (vm, "%=20s%=48s", "interface", "link-address");
+
+ vlib_cli_output (vm, "%=20U%=48U",
+ format_vnet_sw_if_index_name, dm->vnet_main, sw_if_index0,
+ format_ip6_address, ia0);
+ } else
+ vlib_cli_output (vm, "%=34s%=20U", "No IPv6 address configured on",
+ format_vnet_sw_if_index_name, dm->vnet_main, sw_if_index);
+ } else
+ break;
+ }
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (dhcpv6_proxy_address_show_command, static) = {
+ .path = "show dhcpv6 link-address interface",
+ .short_help = "show dhcpv6 link-address interface <interface>",
+ .function = dhcpv6_link_address_show_command_fn,
+};
Code Review / vpp.git / blobdiff