| /* |
| * 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]; |
| |
| if (vec_len(dpm->dhcp6_server_index_by_rx_fib_index) <= rx_fib_idx) |
| goto no_server; |
| |
| 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, |
| }; |