6bcc6a4557
Type: fix - when the addresses were learnt a copy of the client was sent to the main thread, this meant the unicast adjacecny was saved on the copy not on the original. - Add logging. - Improve the proxy-node that hands the clint packets so the DHCP packets are traced. - allow a renewal to configure new address data Change-Id: I6ab0afcccbc4a1cdefdd1b8beeda8fc7ba20ec1f Signed-off-by: Neale Ranns <nranns@cisco.com>
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* dhcp4_packet.c: dhcp packet format functions
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*
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* Copyright (c) 2013 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <dhcp/dhcp4_packet.h>
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#include <vnet/ip/format.h>
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u8 *
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format_dhcp_packet_type (u8 * s, va_list * args)
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{
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dhcp_packet_type_t pt = va_arg (*args, dhcp_packet_type_t);
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switch (pt)
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{
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case DHCP_PACKET_DISCOVER:
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s = format (s, "discover");
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break;
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case DHCP_PACKET_OFFER:
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s = format (s, "offer");
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break;
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case DHCP_PACKET_REQUEST:
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s = format (s, "request");
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break;
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case DHCP_PACKET_ACK:
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s = format (s, "ack");
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break;
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case DHCP_PACKET_NAK:
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s = format (s, "nack");
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break;
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}
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return (s);
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}
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u8 *
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format_dhcp_header (u8 * s, va_list * args)
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{
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dhcp_header_t *d = va_arg (*args, dhcp_header_t *);
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u32 max_bytes = va_arg (*args, u32);
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dhcp_option_t *o;
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u32 tmp;
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s = format (s, "opcode:%s", (d->opcode == 1 ? "request" : "reply"));
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s = format (s, " hw[type:%d addr-len:%d addr:%U]",
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d->hardware_type, d->hardware_address_length,
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format_hex_bytes, d->client_hardware_address,
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d->hardware_address_length);
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s = format (s, " hops%d", d->hops);
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s = format (s, " transaction-ID:0x%x", d->transaction_identifier);
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s = format (s, " seconds:%d", d->seconds);
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s = format (s, " flags:0x%x", d->flags);
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s = format (s, " client:%U", format_ip4_address, &d->client_ip_address);
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s = format (s, " your:%U", format_ip4_address, &d->your_ip_address);
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s = format (s, " server:%U", format_ip4_address, &d->server_ip_address);
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s = format (s, " gateway:%U", format_ip4_address, &d->gateway_ip_address);
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s = format (s, " cookie:%U", format_ip4_address, &d->magic_cookie);
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o = (dhcp_option_t *) d->options;
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while (o->option != 0xFF /* end of options */ &&
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(u8 *) o < (u8 *) d + max_bytes)
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{
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switch (o->option)
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{
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case 53: /* dhcp message type */
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tmp = o->data[0];
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s =
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format (s, ", option-53: type:%U", format_dhcp_packet_type, tmp);
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break;
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case 54: /* dhcp server address */
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s = format (s, ", option-54: server:%U",
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format_ip4_address, &o->data_as_u32[0]);
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break;
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case 58: /* lease renew time in seconds */
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s = format (s, ", option-58: renewal:%d",
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clib_host_to_net_u32 (o->data_as_u32[0]));
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break;
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case 1: /* subnet mask */
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s = format (s, ", option-1: subnet-mask:%d",
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clib_host_to_net_u32 (o->data_as_u32[0]));
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break;
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case 3: /* router address */
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s = format (s, ", option-3: router:%U",
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format_ip4_address, &o->data_as_u32[0]);
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break;
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case 6: /* domain server address */
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s = format (s, ", option-6: domian-server:%U",
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format_hex_bytes, o->data, o->length);
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break;
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case 12: /* hostname */
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s = format (s, ", option-12: hostname:%U",
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format_hex_bytes, o->data, o->length);
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break;
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default:
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tmp = o->option;
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s = format (s, " option-%d: skipped", tmp);
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break;
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}
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o = (dhcp_option_t *) (((u8 *) o) + (o->length + 2));
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}
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return (s);
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}
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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