2 * proxy_node.c: dhcp proxy node processing
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vlib/vlib.h>
19 #include <vnet/pg/pg.h>
20 #include <vnet/dhcp/dhcp_proxy.h>
21 #include <vnet/dhcp/client.h>
22 #include <vnet/fib/ip4_fib.h>
24 static char * dhcp_proxy_error_strings[] = {
25 #define dhcp_proxy_error(n,s) s,
26 #include <vnet/dhcp/dhcp4_proxy_error.def>
27 #undef dhcp_proxy_error
30 #define foreach_dhcp_proxy_to_server_input_next \
31 _ (DROP, "error-drop") \
32 _ (LOOKUP, "ip4-lookup") \
33 _ (SEND_TO_CLIENT, "dhcp-proxy-to-client")
36 #define _(s,n) DHCP_PROXY_TO_SERVER_INPUT_NEXT_##s,
37 foreach_dhcp_proxy_to_server_input_next
39 DHCP_PROXY_TO_SERVER_INPUT_N_NEXT,
40 } dhcp_proxy_to_server_input_next_t;
43 /* 0 => to server, 1 => to client */
45 ip4_address_t trace_ip4_address;
48 u32 original_sw_if_index;
51 #define VPP_DHCP_OPTION82_SUB1_SIZE 6
52 #define VPP_DHCP_OPTION82_SUB5_SIZE 6
53 #define VPP_DHCP_OPTION82_VSS_SIZE 12
54 #define VPP_DHCP_OPTION82_SIZE (VPP_DHCP_OPTION82_SUB1_SIZE + \
55 VPP_DHCP_OPTION82_SUB5_SIZE + \
56 VPP_DHCP_OPTION82_VSS_SIZE +3)
58 static vlib_node_registration_t dhcp_proxy_to_server_node;
59 static vlib_node_registration_t dhcp_proxy_to_client_node;
62 format_dhcp_proxy_trace (u8 * s, va_list * args)
64 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
65 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
66 dhcp_proxy_trace_t * t = va_arg (*args, dhcp_proxy_trace_t *);
69 s = format (s, "DHCP proxy: sent to server %U\n",
70 format_ip4_address, &t->trace_ip4_address, t->error);
72 s = format (s, "DHCP proxy: broadcast to client from %U\n",
73 format_ip4_address, &t->trace_ip4_address);
75 if (t->error != (u32)~0)
76 s = format (s, " error: %s\n", dhcp_proxy_error_strings[t->error]);
78 s = format (s, " original_sw_if_index: %d, sw_if_index: %d\n",
79 t->original_sw_if_index, t->sw_if_index);
85 format_dhcp_proxy_header_with_length (u8 * s, va_list * args)
87 dhcp_header_t * h = va_arg (*args, dhcp_header_t *);
88 u32 max_header_bytes = va_arg (*args, u32);
91 header_bytes = sizeof (h[0]);
92 if (max_header_bytes != 0 && header_bytes > max_header_bytes)
93 return format (s, "dhcp header truncated");
95 s = format (s, "DHCP Proxy");
101 dhcp_proxy_to_server_input (vlib_main_t * vm,
102 vlib_node_runtime_t * node,
103 vlib_frame_t * from_frame)
105 u32 n_left_from, next_index, * from, * to_next;
106 dhcp_proxy_main_t * dpm = &dhcp_proxy_main;
107 from = vlib_frame_vector_args (from_frame);
108 n_left_from = from_frame->n_vectors;
109 u32 pkts_to_server=0, pkts_to_client=0, pkts_no_server=0;
110 u32 pkts_no_interface_address=0;
112 ip4_main_t * im = &ip4_main;
114 next_index = node->cached_next_index;
116 while (n_left_from > 0)
120 vlib_get_next_frame (vm, node, next_index,
121 to_next, n_left_to_next);
123 while (n_left_from > 0 && n_left_to_next > 0)
133 u32 error0 = (u32) ~0;
135 u32 original_sw_if_index = 0;
138 dhcp_server_t * server;
142 vlib_buffer_free_list_t *fl;
151 b0 = vlib_get_buffer (vm, bi0);
153 h0 = vlib_buffer_get_current (b0);
156 * udp_local hands us the DHCP header, need udp hdr,
157 * ip hdr to relay to server
159 vlib_buffer_advance (b0, -(sizeof(*u0)));
160 u0 = vlib_buffer_get_current (b0);
162 /* This blows. Return traffic has src_port = 67, dst_port = 67 */
163 if (u0->src_port == clib_net_to_host_u16(UDP_DST_PORT_dhcp_to_server))
165 vlib_buffer_advance (b0, sizeof(*u0));
166 next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_SEND_TO_CLIENT;
172 rx_sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_RX];
174 fib_index = im->fib_index_by_sw_if_index [rx_sw_if_index];
175 server = dhcp_get_server(dpm, fib_index, FIB_PROTOCOL_IP4);
177 if (PREDICT_FALSE (NULL == server))
179 error0 = DHCP_PROXY_ERROR_NO_SERVER;
180 next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
185 vlib_buffer_advance (b0, -(sizeof(*ip0)));
186 ip0 = vlib_buffer_get_current (b0);
188 /* disable UDP checksum */
190 sum0 = ip0->checksum;
191 old0 = ip0->dst_address.as_u32;
192 new0 = server->dhcp_server.ip4.as_u32;
193 ip0->dst_address.as_u32 = server->dhcp_server.ip4.as_u32;
194 sum0 = ip_csum_update (sum0, old0, new0,
195 ip4_header_t /* structure */,
196 dst_address /* changed member */);
197 ip0->checksum = ip_csum_fold (sum0);
199 sum0 = ip0->checksum;
200 old0 = ip0->src_address.as_u32;
201 new0 = server->dhcp_src_address.ip4.as_u32;
202 ip0->src_address.as_u32 = new0;
203 sum0 = ip_csum_update (sum0, old0, new0,
204 ip4_header_t /* structure */,
205 src_address /* changed member */);
206 ip0->checksum = ip_csum_fold (sum0);
208 /* Send to DHCP server via the configured FIB */
209 vnet_buffer(b0)->sw_if_index[VLIB_TX] =
210 server->server_fib_index;
212 h0->gateway_ip_address.as_u32 = server->dhcp_src_address.ip4.as_u32;
215 o = (dhcp_option_t *) h0->options;
217 fib_index = im->fib_index_by_sw_if_index
218 [vnet_buffer(b0)->sw_if_index[VLIB_RX]];
220 end = b0->data + b0->current_data + b0->current_length;
221 /* TLVs are not performance-friendly... */
222 while (o->option != 0xFF /* end of options */ && (u8 *)o < end)
223 o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
225 fl = vlib_buffer_get_free_list (vm, b0->free_list_index);
226 // start write at (option*)o, some packets have padding
227 if (((u8 *)o - (u8 *)b0->data + VPP_DHCP_OPTION82_SIZE) > fl->n_data_bytes)
229 next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
234 if ((o->option == 0xFF) && ((u8 *)o <= end))
236 vnet_main_t *vnm = vnet_get_main();
238 ip4_address_t _ia0, * ia0 = &_ia0;
240 vnet_sw_interface_t *swif;
242 original_sw_if_index = 0;
244 original_sw_if_index = sw_if_index =
245 vnet_buffer(b0)->sw_if_index[VLIB_RX];
246 swif = vnet_get_sw_interface (vnm, sw_if_index);
247 if (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
248 sw_if_index = swif->unnumbered_sw_if_index;
251 * Get the first ip4 address on the [client-side]
252 * RX interface, if not unnumbered. otherwise use
253 * the loopback interface's ip address.
255 ia0 = ip4_interface_first_address(&ip4_main, sw_if_index, 0);
259 error0 = DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS;
260 next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_DROP;
261 pkts_no_interface_address++;
266 o->option = 82; /* option 82 */
267 o->length = 12; /* 12 octets to follow */
268 o->data[0] = 1; /* suboption 1, circuit ID (=FIB id) */
269 o->data[1] = 4; /* length of suboption */
270 o->data[2] = (original_sw_if_index >> 24) & 0xFF;
271 o->data[3] = (original_sw_if_index >> 16) & 0xFF;
272 o->data[4] = (original_sw_if_index >> 8) & 0xFF;
273 o->data[5] = (original_sw_if_index >> 0) & 0xFF;
274 o->data[6] = 5; /* suboption 5 (client RX intfc address) */
275 o->data[7] = 4; /* length 4 */
276 o->data[8] = ia0->as_u8[0];
277 o->data[9] = ia0->as_u8[1];
278 o->data[10] = ia0->as_u8[2];
279 o->data[11] = ia0->as_u8[3];
282 vss = dhcp_get_vss_info (dpm, fib_index, FIB_PROTOCOL_IP4);
285 u32 opt82_fib_id=0, opt82_oui=0;
287 opt82_oui = vss->oui;
288 opt82_fib_id = vss->fib_id;
290 o->data[12] = 151; /* vss suboption */
291 if (255 == opt82_fib_id) {
292 o->data[13] = 1; /* length */
293 o->data[14] = 255; /* vss option type */
294 o->data[15] = 152; /* vss control suboption */
295 o->data[16] = 0; /* length */
296 /* and a new "end-of-options" option (0xff) */
300 o->data[13] = 8; /* length */
301 o->data[14] = 1; /* vss option type */
302 o->data[15] = (opt82_oui >> 16) & 0xff;
303 o->data[16] = (opt82_oui >> 8) & 0xff;
304 o->data[17] = (opt82_oui ) & 0xff;
305 o->data[18] = (opt82_fib_id >> 24) & 0xff;
306 o->data[19] = (opt82_fib_id >> 16) & 0xff;
307 o->data[20] = (opt82_fib_id >> 8) & 0xff;
308 o->data[21] = (opt82_fib_id) & 0xff;
309 o->data[22] = 152; /* vss control suboption */
310 o->data[23] = 0; /* length */
312 /* and a new "end-of-options" option (0xff) */
319 b0->current_length += len;
320 /* Fix IP header length and checksum */
321 old_l0 = ip0->length;
322 new_l0 = clib_net_to_host_u16 (old_l0);
324 new_l0 = clib_host_to_net_u16 (new_l0);
325 ip0->length = new_l0;
326 sum0 = ip0->checksum;
327 sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
328 length /* changed member */);
329 ip0->checksum = ip_csum_fold (sum0);
332 new_l0 = clib_net_to_host_u16 (u0->length);
334 u0->length = clib_host_to_net_u16 (new_l0);
336 vlib_node_increment_counter
337 (vm, dhcp_proxy_to_server_node.index,
338 DHCP_PROXY_ERROR_OPTION_82_ERROR, 1);
341 next0 = DHCP_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP;
344 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
346 dhcp_proxy_trace_t *tr = vlib_add_trace (vm, node,
348 tr->which = 0; /* to server */
350 tr->original_sw_if_index = original_sw_if_index;
351 tr->sw_if_index = sw_if_index;
352 if (next0 == DHCP_PROXY_TO_SERVER_INPUT_NEXT_LOOKUP)
353 tr->trace_ip4_address.as_u32 = server->dhcp_server.ip4.as_u32;
357 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
358 to_next, n_left_to_next,
362 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
365 vlib_node_increment_counter (vm, dhcp_proxy_to_server_node.index,
366 DHCP_PROXY_ERROR_RELAY_TO_CLIENT,
368 vlib_node_increment_counter (vm, dhcp_proxy_to_server_node.index,
369 DHCP_PROXY_ERROR_RELAY_TO_SERVER,
371 vlib_node_increment_counter (vm, dhcp_proxy_to_server_node.index,
372 DHCP_PROXY_ERROR_NO_SERVER,
374 vlib_node_increment_counter (vm, dhcp_proxy_to_server_node.index,
375 DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS,
376 pkts_no_interface_address);
377 vlib_node_increment_counter (vm, dhcp_proxy_to_server_node.index,
378 DHCP_PROXY_ERROR_PKT_TOO_BIG,
380 return from_frame->n_vectors;
383 VLIB_REGISTER_NODE (dhcp_proxy_to_server_node, static) = {
384 .function = dhcp_proxy_to_server_input,
385 .name = "dhcp-proxy-to-server",
386 /* Takes a vector of packets. */
387 .vector_size = sizeof (u32),
389 .n_errors = DHCP_PROXY_N_ERROR,
390 .error_strings = dhcp_proxy_error_strings,
392 .n_next_nodes = DHCP_PROXY_TO_SERVER_INPUT_N_NEXT,
394 #define _(s,n) [DHCP_PROXY_TO_SERVER_INPUT_NEXT_##s] = n,
395 foreach_dhcp_proxy_to_server_input_next
399 .format_buffer = format_dhcp_proxy_header_with_length,
400 .format_trace = format_dhcp_proxy_trace,
402 .unformat_buffer = unformat_dhcp_proxy_header,
407 dhcp_proxy_to_client_input (vlib_main_t * vm,
408 vlib_node_runtime_t * node,
409 vlib_frame_t * from_frame)
411 u32 n_left_from, * from;
412 ethernet_main_t *em = ethernet_get_main (vm);
413 dhcp_proxy_main_t * dpm = &dhcp_proxy_main;
414 vnet_main_t * vnm = vnet_get_main();
415 ip4_main_t * im = &ip4_main;
417 from = vlib_frame_vector_args (from_frame);
418 n_left_from = from_frame->n_vectors;
420 while (n_left_from > 0)
426 ip4_header_t * ip0 = 0;
427 ip4_address_t * ia0 = 0;
430 ethernet_interface_t *ei0;
431 ethernet_header_t *mac0;
432 vnet_hw_interface_t *hi0;
435 u32 sw_if_index = ~0;
436 vnet_sw_interface_t *si0;
437 u32 error0 = (u32)~0;
438 vnet_sw_interface_t *swif;
440 dhcp_server_t * server;
441 u32 original_sw_if_index = (u32) ~0;
442 ip4_address_t relay_addr = {
450 b0 = vlib_get_buffer (vm, bi0);
451 h0 = vlib_buffer_get_current (b0);
454 * udp_local hands us the DHCP header, need udp hdr,
455 * ip hdr to relay to client
457 vlib_buffer_advance (b0, -(sizeof(*u0)));
458 u0 = vlib_buffer_get_current (b0);
460 vlib_buffer_advance (b0, -(sizeof(*ip0)));
461 ip0 = vlib_buffer_get_current (b0);
463 /* Consumed by dhcp client code? */
464 if (dhcp_client_for_us (bi0, b0, ip0, u0, h0))
467 if (1 /* dpm->insert_option_82 */)
469 dhcp_option_t *o = (dhcp_option_t *) h0->options;
472 /* Parse through TLVs looking for option 82.
473 The circuit-ID is the FIB number we need
474 to track down the client-facing interface */
476 while (o->option != 0xFF /* end of options */ &&
477 (u8 *) o < (b0->data + b0->current_data + b0->current_length))
483 sub = (dhcp_option_t *) &o->data[0];
484 while (sub->option != 0xFF /* end of options */ &&
485 (u8 *) sub < (u8 *)(o + o->length)) {
486 /* If this is one of ours, it will have
487 total length 12, circuit-id suboption type,
488 and the sw_if_index */
489 if (sub->option == 1 && sub->length == 4)
491 sw_if_index = ((sub->data[0] << 24) |
492 (sub->data[1] << 16) |
493 (sub->data[2] << 8) |
496 else if (sub->option == 5 && sub->length == 4)
498 relay_addr.as_u8[0] = sub->data[0];
499 relay_addr.as_u8[1] = sub->data[1];
500 relay_addr.as_u8[2] = sub->data[2];
501 relay_addr.as_u8[3] = sub->data[3];
503 else if (sub->option == 151 &&
507 else if (sub->option == 152 && sub->length == 0)
509 sub = (dhcp_option_t *)
510 (((uword) sub) + (sub->length + 2));
512 if (vss_ctrl && vss_exist)
513 vlib_node_increment_counter
514 (vm, dhcp_proxy_to_client_node.index,
515 DHCP_PROXY_ERROR_OPTION_82_VSS_NOT_PROCESSED, 1);
518 o = (dhcp_option_t *) (((uword) o) + (o->length + 2));
522 if (sw_if_index == (u32)~0)
524 error0 = DHCP_PROXY_ERROR_NO_OPTION_82;
527 vlib_node_increment_counter (vm, dhcp_proxy_to_client_node.index,
529 f0 = vlib_get_frame_to_node (vm, dpm->error_drop_node_index);
530 to_next0 = vlib_frame_vector_args (f0);
533 vlib_put_frame_to_node (vm, dpm->error_drop_node_index, f0);
537 if (relay_addr.as_u32 == 0)
539 error0 = DHCP_PROXY_ERROR_BAD_OPTION_82_ADDR;
543 if (sw_if_index >= vec_len (im->fib_index_by_sw_if_index))
545 error0 = DHCP_PROXY_ERROR_BAD_OPTION_82_ITF;
549 fib_index = im->fib_index_by_sw_if_index [sw_if_index];
550 server = dhcp_get_server(dpm, fib_index, FIB_PROTOCOL_IP4);
552 if (PREDICT_FALSE (NULL == server))
554 error0 = DHCP_PROXY_ERROR_NO_SERVER;
558 if (ip0->src_address.as_u32 != server->dhcp_server.ip4.as_u32)
560 error0 = DHCP_PROXY_ERROR_BAD_SVR_FIB_OR_ADDRESS;
564 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index;
566 swif = vnet_get_sw_interface (vnm, sw_if_index);
567 original_sw_if_index = sw_if_index;
568 if (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
569 sw_if_index = swif->unnumbered_sw_if_index;
571 ia0 = ip4_interface_first_address (&ip4_main, sw_if_index, 0);
574 error0 = DHCP_PROXY_ERROR_NO_INTERFACE_ADDRESS;
578 if (relay_addr.as_u32 != ia0->as_u32)
580 error0 = DHCP_PROXY_ERROR_BAD_YIADDR;
585 u0->dst_port = clib_net_to_host_u16 (UDP_DST_PORT_dhcp_to_client);
586 sum0 = ip0->checksum;
587 old0 = ip0->dst_address.as_u32;
589 ip0->dst_address.as_u32 = new0;
590 sum0 = ip_csum_update (sum0, old0, new0,
591 ip4_header_t /* structure */,
592 dst_address /* offset of changed member */);
593 ip0->checksum = ip_csum_fold (sum0);
595 sum0 = ip0->checksum;
596 old0 = ip0->src_address.as_u32;
598 ip0->src_address.as_u32 = new0;
599 sum0 = ip_csum_update (sum0, old0, new0,
600 ip4_header_t /* structure */,
601 src_address /* offset of changed member */);
602 ip0->checksum = ip_csum_fold (sum0);
604 vlib_buffer_advance (b0, -(sizeof(ethernet_header_t)));
605 si0 = vnet_get_sw_interface (vnm, original_sw_if_index);
606 if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
607 vlib_buffer_advance (b0, -4 /* space for VLAN tag */);
609 mac0 = vlib_buffer_get_current (b0);
611 hi0 = vnet_get_sup_hw_interface (vnm, original_sw_if_index);
612 ei0 = pool_elt_at_index (em->interfaces, hi0->hw_instance);
613 clib_memcpy (mac0->src_address, ei0->address, sizeof (ei0->address));
614 memset (mac0->dst_address, 0xff, sizeof (mac0->dst_address));
615 mac0->type = (si0->type == VNET_SW_INTERFACE_TYPE_SUB) ?
616 clib_net_to_host_u16(0x8100) : clib_net_to_host_u16 (0x0800);
618 if (si0->type == VNET_SW_INTERFACE_TYPE_SUB)
620 u32 * vlan_tag = (u32 *)(mac0+1);
622 tmp = (si0->sub.id << 16) | 0x0800;
623 *vlan_tag = clib_host_to_net_u32 (tmp);
626 /* $$$ This needs to be rewritten, for sure */
627 f0 = vlib_get_frame_to_node (vm, hi0->output_node_index);
628 to_next0 = vlib_frame_vector_args (f0);
631 vlib_put_frame_to_node (vm, hi0->output_node_index, f0);
634 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
636 dhcp_proxy_trace_t *tr = vlib_add_trace (vm, node,
638 tr->which = 1; /* to client */
639 tr->trace_ip4_address.as_u32 = ia0 ? ia0->as_u32 : 0;
641 tr->original_sw_if_index = original_sw_if_index;
642 tr->sw_if_index = sw_if_index;
645 return from_frame->n_vectors;
648 VLIB_REGISTER_NODE (dhcp_proxy_to_client_node, static) = {
649 .function = dhcp_proxy_to_client_input,
650 .name = "dhcp-proxy-to-client",
651 /* Takes a vector of packets. */
652 .vector_size = sizeof (u32),
654 .n_errors = DHCP_PROXY_N_ERROR,
655 .error_strings = dhcp_proxy_error_strings,
656 .format_buffer = format_dhcp_proxy_header_with_length,
657 .format_trace = format_dhcp_proxy_trace,
659 .unformat_buffer = unformat_dhcp_proxy_header,
663 static clib_error_t *
664 dhcp4_proxy_init (vlib_main_t * vm)
666 dhcp_proxy_main_t * dm = &dhcp_proxy_main;
667 vlib_node_t * error_drop_node;
669 error_drop_node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
670 dm->error_drop_node_index = error_drop_node->index;
672 udp_register_dst_port (vm, UDP_DST_PORT_dhcp_to_client,
673 dhcp_proxy_to_client_node.index, 1 /* is_ip4 */);
675 udp_register_dst_port (vm, UDP_DST_PORT_dhcp_to_server,
676 dhcp_proxy_to_server_node.index, 1 /* is_ip4 */);
682 VLIB_INIT_FUNCTION (dhcp4_proxy_init);
685 dhcp4_proxy_set_server (ip46_address_t *addr,
686 ip46_address_t *src_addr,
691 u32 rx_fib_index = 0;
694 const fib_prefix_t all_1s =
697 .fp_addr.ip4.as_u32 = 0xffffffff,
698 .fp_proto = FIB_PROTOCOL_IP4,
701 if (ip46_address_is_zero(addr))
702 return VNET_API_ERROR_INVALID_DST_ADDRESS;
704 if (ip46_address_is_zero(src_addr))
705 return VNET_API_ERROR_INVALID_SRC_ADDRESS;
707 rx_fib_index = fib_table_find_or_create_and_lock(FIB_PROTOCOL_IP4,
712 rc = dhcp_proxy_server_del (FIB_PROTOCOL_IP4, rx_fib_index);
716 fib_table_entry_special_remove(rx_fib_index,
719 fib_table_unlock (rx_fib_index, FIB_PROTOCOL_IP4);
724 if (dhcp_proxy_server_add (FIB_PROTOCOL_IP4,
726 rx_fib_index, server_table_id))
728 fib_table_entry_special_add(rx_fib_index,
731 FIB_ENTRY_FLAG_LOCAL,
733 fib_table_lock (rx_fib_index, FIB_PROTOCOL_IP4);
736 fib_table_unlock (rx_fib_index, FIB_PROTOCOL_IP4);
741 static clib_error_t *
742 dhcp4_proxy_set_command_fn (vlib_main_t * vm,
743 unformat_input_t * input,
744 vlib_cli_command_t * cmd)
746 ip46_address_t server_addr, src_addr;
747 u32 server_table_id = 0, rx_table_id = 0;
749 int set_src = 0, set_server = 0;
751 memset(&server_addr, 0, sizeof(server_addr));
752 memset(&src_addr, 0, sizeof(src_addr));
754 while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
756 if (unformat (input, "server %U",
757 unformat_ip4_address, &server_addr.ip4))
759 else if (unformat (input, "server-fib-id %d", &server_table_id))
761 else if (unformat (input, "rx-fib-id %d", &rx_table_id))
763 else if (unformat(input, "src-address %U",
764 unformat_ip4_address, &src_addr.ip4))
766 else if (unformat (input, "delete") ||
767 unformat (input, "del"))
773 if (is_del || (set_server && set_src))
777 rv = dhcp4_proxy_set_server (&server_addr, &src_addr, rx_table_id,
778 server_table_id, is_del);
784 case VNET_API_ERROR_INVALID_DST_ADDRESS:
785 return clib_error_return (0, "Invalid server address");
787 case VNET_API_ERROR_INVALID_SRC_ADDRESS:
788 return clib_error_return (0, "Invalid src address");
790 case VNET_API_ERROR_NO_SUCH_ENTRY:
791 return clib_error_return
792 (0, "Fib id %d: no per-fib DHCP server configured", rx_table_id);
795 return clib_error_return (0, "BUG: rv %d", rv);
799 return clib_error_return (0, "parse error`%U'",
800 format_unformat_error, input);
803 VLIB_CLI_COMMAND (dhcp_proxy_set_command, static) = {
804 .path = "set dhcp proxy",
805 .short_help = "set dhcp proxy [del] server <ip-addr> src-address <ip-addr> [server-fib-id <n>] [rx-fib-id <n>]",
806 .function = dhcp4_proxy_set_command_fn,
810 format_dhcp4_proxy_server (u8 * s, va_list * args)
812 dhcp_server_t * server = va_arg (*args, dhcp_server_t *);
813 ip4_fib_t * rx_fib, * server_fib;
817 s = format (s, "%=16s%=16s%=14s%=14s", "Server", "Src Address",
818 "Server FIB", "RX FIB");
822 server_fib = ip4_fib_get(server->server_fib_index);
823 rx_fib = ip4_fib_get(server->rx_fib_index);
825 s = format (s, "%=16U%=16U%=14u%=14u",
826 format_ip46_address, &server->dhcp_server, IP46_TYPE_ANY,
827 format_ip46_address, &server->dhcp_src_address, IP46_TYPE_ANY,
828 server_fib->table_id,
834 dhcp4_proxy_show_walk (dhcp_server_t *server,
837 vlib_main_t * vm = ctx;
839 vlib_cli_output (vm, "%U", format_dhcp4_proxy_server, server);
844 static clib_error_t *
845 dhcp4_proxy_show_command_fn (vlib_main_t * vm,
846 unformat_input_t * input,
847 vlib_cli_command_t * cmd)
849 vlib_cli_output (vm, "%U", format_dhcp4_proxy_server, NULL /* header line */);
851 dhcp_proxy_walk(FIB_PROTOCOL_IP4, dhcp4_proxy_show_walk, vm);
856 VLIB_CLI_COMMAND (dhcp_proxy_show_command, static) = {
857 .path = "show dhcp proxy",
858 .short_help = "Display dhcp proxy server info",
859 .function = dhcp4_proxy_show_command_fn,
862 static clib_error_t *
863 dhcp_option_82_vss_fn (vlib_main_t * vm,
864 unformat_input_t * input,
865 vlib_cli_command_t * cmd)
867 int is_del = 0, got_new_vpn_id=0;
868 u32 oui=0, fib_id=0, tbl_id=~0;
870 while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
873 if (unformat(input, "delete") || unformat(input, "del"))
875 else if (unformat (input, "oui %d", &oui))
877 else if (unformat (input, "vpn-id %d", &fib_id))
879 else if (unformat (input, "table %d", &tbl_id))
885 return clib_error_return (0, "no table ID specified.");
887 if (is_del || got_new_vpn_id)
890 rv = dhcp_proxy_set_vss(FIB_PROTOCOL_IP4, tbl_id, oui, fib_id, is_del);
896 case VNET_API_ERROR_NO_SUCH_FIB:
897 return clib_error_return (0, "option 82 vss(oui:%d, vpn-id:%d) not found in table %d",
898 oui, fib_id, tbl_id);
900 case VNET_API_ERROR_NO_SUCH_ENTRY:
901 return clib_error_return (0, "option 82 vss for table %d not found in in pool.",
904 return clib_error_return (0, "BUG: rv %d", rv);
908 return clib_error_return (0, "parse error`%U'",
909 format_unformat_error, input);
912 VLIB_CLI_COMMAND (dhcp_proxy_vss_command,static) = {
913 .path = "set dhcp option-82 vss",
914 .short_help = "set dhcp option-82 vss [del] table <table id> oui <oui> vpn-id <vpn-id>",
915 .function = dhcp_option_82_vss_fn,
918 static clib_error_t *
919 dhcp_vss_show_command_fn (vlib_main_t * vm,
920 unformat_input_t * input,
921 vlib_cli_command_t * cmd)
924 dhcp_vss_walk(FIB_PROTOCOL_IP4, dhcp_vss_show_walk, vm);
929 VLIB_CLI_COMMAND (dhcp_proxy_vss_show_command, static) = {
930 .path = "show dhcp vss",
931 .short_help = "show dhcp VSS",
932 .function = dhcp_vss_show_command_fn,
935 static clib_error_t *
936 dhcp_option_82_address_show_command_fn (vlib_main_t * vm,
937 unformat_input_t * input,
938 vlib_cli_command_t * cmd)
941 vnet_main_t *vnm = vnet_get_main();
942 u32 sw_if_index0=0, sw_if_index;
943 vnet_sw_interface_t *swif;
946 while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
949 if (unformat(input, "%U",
950 unformat_vnet_sw_interface, vnm, &sw_if_index0))
952 swif = vnet_get_sw_interface (vnm, sw_if_index0);
953 sw_if_index = (swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) ?
954 swif->unnumbered_sw_if_index : sw_if_index0;
955 ia0 = ip4_interface_first_address(&ip4_main, sw_if_index, 0);
958 vlib_cli_output (vm, "%=20s%=20s", "interface",
959 "source IP address");
961 vlib_cli_output (vm, "%=20U%=20U",
962 format_vnet_sw_if_index_name,
964 format_ip4_address, ia0);
967 vlib_cli_output (vm, "%=34s %=20U",
968 "No IPv4 address configured on",
969 format_vnet_sw_if_index_name,
979 VLIB_CLI_COMMAND (dhcp_proxy_address_show_command,static) = {
980 .path = "show dhcp option-82-address interface",
981 .short_help = "show dhcp option-82-address interface <interface>",
982 .function = dhcp_option_82_address_show_command_fn,