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authorNeale Ranns <nranns@cisco.com>2017-02-16 03:38:59 -0800
committerNeale Ranns <nranns@cisco.com>2017-02-16 04:01:06 -0800
commit2dd6852d8109e39d15a5c60f7ba58f1abcf9e455 (patch)
treea63089809ea20b2ed69c26c211d7e2f2454e3e5b /src/vnet/dhcp/dhcp6_packet.h
parentc8c5335e3a1d1ba7ec1248b0ecbf00cc74ea57bb (diff)
Consolidate DHCP v4 and V6 implementation. No functional change intended
The DHCP proxy and VSS information maintained by VPP is the same for v4 and v6, so we can manage this state using the same code. Packet handling is cleary different, so this is kept separate. Change-Id: I10f10cc1f7f19debcd4c4b099c6de64e56bb0c69 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/dhcp/dhcp6_packet.h')
-rw-r--r--src/vnet/dhcp/dhcp6_packet.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/src/vnet/dhcp/dhcp6_packet.h b/src/vnet/dhcp/dhcp6_packet.h
new file mode 100644
index 00000000000..ddcde7a0dd9
--- /dev/null
+++ b/src/vnet/dhcp/dhcp6_packet.h
@@ -0,0 +1,183 @@
+#ifndef included_vnet_dhcp6_packet_h
+#define included_vnet_dhcp6_packet_h
+
+/*
+ * DHCP packet format
+ *
+ * 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 <vnet/ip/ip6_packet.h>
+
+// #define DHCP_VRF_NAME_MAX_LEN L3VM_MAX_NAME_STR_LEN
+// #define DHCPV6_MAX_VRF_NAME_LEN L3VM_MAX_NAME_STR_LEN
+#define DHCP_MAX_RELAY_ADDR 16
+#define PROTO_UDP 17
+#define DHCPV6_CLIENT_PORT 546
+#define DHCPV6_SERVER_PORT 547
+#define HOP_COUNT_LIMIT 32
+#define DHCPV6_CISCO_ENT_NUM 9
+
+/*
+ * DHCPv6 message types
+ */
+typedef enum dhcpv6_msg_type_{
+ DHCPV6_MSG_SOLICIT = 1,
+ DHCPV6_MSG_ADVERTISE = 2,
+ DHCPV6_MSG_REQUEST = 3,
+ DHCPV6_MSG_CONFIRM = 4,
+ DHCPV6_MSG_RENEW = 5,
+ DHCPV6_MSG_REBIND = 6,
+ DHCPV6_MSG_REPLY = 7,
+ DHCPV6_MSG_RELEASE = 8,
+ DHCPV6_MSG_DECLINE = 9,
+ DHCPV6_MSG_RECONFIGURE = 10,
+ DHCPV6_MSG_INFORMATION_REQUEST = 11,
+ DHCPV6_MSG_RELAY_FORW = 12,
+ DHCPV6_MSG_RELAY_REPL = 13,
+} dhcpv6_msg_type_t;
+
+/*
+ * DHCPv6 options types
+ */
+enum {
+ DHCPV6_OPTION_CLIENTID = 1,
+ DHCPV6_OPTION_SERVERID = 2,
+ DHCPV6_OPTION_IA_NA = 3,
+ DHCPV6_OPTION_IA_TA = 4,
+ DHCPV6_OPTION_IAADDR = 5,
+ DHCPV6_OPTION_ORO = 6,
+ DHCPV6_OPTION_PREFERENCE = 7,
+ DHCPV6_OPTION_ELAPSED_TIME = 8,
+ DHCPV6_OPTION_RELAY_MSG = 9,
+ DHCPV6_OPTION_AUTH = 11,
+ DHCPV6_OPTION_UNICAST = 12,
+ DHCPV6_OPTION_STATUS_CODE = 13,
+ DHCPV6_OPTION_RAPID_COMMIT = 14,
+ DHCPV6_OPTION_USER_CLASS = 15,
+ DHCPV6_OPTION_VENDOR_CLASS = 16,
+ DHCPV6_OPTION_VENDOR_OPTS = 17,
+ DHCPV6_OPTION_INTERFACE_ID = 18, // relay agent fills this
+ DHCPV6_OPTION_RECONF_MSG = 19,
+ DHCPV6_OPTION_RECONF_ACCEPT = 20,
+ DHCPV6_OPTION_REMOTEID = 37, // relay agent fills this
+ DHCPV6_OPTION_VSS = 68, // relay agent fills this
+ DHCPV6_OPTION_CLIENT_LINK_LAYER_ADDRESS = 79,
+ DHCPV6_OPTION_MAX
+};
+
+/*
+* DHCPv6 status codes
+ */
+enum {
+ DHCPV6_STATUS_SUCCESS = 0,
+ DHCPV6_STATUS_UNSPEC_FAIL = 1,
+ DHCPV6_STATUS_NOADDRS_AVAIL = 2,
+ DHCPV6_STATUS_NO_BINDING = 3,
+ DHCPV6_STATUS_NOT_ONLINK = 4,
+ DHCPV6_STATUS_USE_MULTICAST = 5,
+};
+
+/*
+ * DHCPv6 DUID types
+ */
+enum {
+ DHCPV6_DUID_LLT = 1, /* DUID Based on Link-layer Address Plus Time */
+ DHCPV6_DUID_EN = 2, /* DUID Based on Enterprise Number */
+ DHCPV6_DUID_LL = 3, /* DUID Based on Link-layer Address */
+};
+
+//Structure for DHCPv6 payload from client
+typedef struct dhcpv6_hdr_ {
+ union {
+ u8 msg_type; //DHCP msg type
+ u32 xid; // transaction id
+ }u;
+ u8 data[0];
+} dhcpv6_header_t;
+
+
+
+typedef CLIB_PACKED (struct dhcpv6_relay_ctx_ {
+ dhcpv6_header_t *pkt;
+ u32 pkt_len;
+ u32 dhcpv6_len; //DHCPv6 payload load
+// if_ordinal iod;
+ u32 if_index;
+ u32 ctx_id;
+ char ctx_name[32+1];
+ u8 dhcp_msg_type;
+}) dhcpv6_relay_ctx_t;
+
+//Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts
+typedef CLIB_PACKED (struct dhcpv6_relay_hdr_ {
+ u8 msg_type;
+ u8 hop_count;
+ ip6_address_t link_addr;
+ ip6_address_t peer_addr;
+ u8 data[0];
+}) dhcpv6_relay_hdr_t;
+
+typedef enum dhcp_stats_action_type_ {
+ DHCP_STATS_ACTION_FORWARDED=1,
+ DHCP_STATS_ACTION_RECEIVED,
+ DHCP_STATS_ACTION_DROPPED
+} dhcp_stats_action_type_t;
+//Generic counters for a packet
+typedef struct dhcp_stats_counters_ {
+ u64 rx_pkts; //counter for received pkts
+ u64 tx_pkts; //counter for forwarded pkts
+ u64 drops; //counter for dropped pkts
+} dhcp_stats_counters_t;
+
+
+typedef enum dhcpv6_stats_drop_reason_ {
+ DHCPV6_RELAY_PKT_DROP_RELAYDISABLE = 1,
+ DHCPV6_RELAY_PKT_DROP_MAX_HOPS,
+ DHCPV6_RELAY_PKT_DROP_VALIDATION_FAIL,
+ DHCPV6_RELAY_PKT_DROP_UNKNOWN_OP_INTF,
+ DHCPV6_RELAY_PKT_DROP_BAD_CONTEXT,
+ DHCPV6_RELAY_PKT_DROP_OPT_INSERT_FAIL,
+ DHCPV6_RELAY_PKT_DROP_REPLY_FROM_CLIENT,
+} dhcpv6_stats_drop_reason_t;
+
+typedef CLIB_PACKED (struct {
+ u16 option;
+ u16 length;
+ u8 data[0];
+}) dhcpv6_option_t;
+
+typedef CLIB_PACKED (struct {
+ dhcpv6_option_t opt;
+ u32 int_idx;
+}) dhcpv6_int_id_t;
+
+typedef CLIB_PACKED (struct {
+ dhcpv6_option_t opt;
+ u8 data[8]; // data[0]:type, data[1..7]: VPN ID
+}) dhcpv6_vss_t;
+
+typedef CLIB_PACKED (struct {
+ dhcpv6_option_t opt;
+ u32 ent_num;
+ u32 rmt_id;
+}) dhcpv6_rmt_id_t;
+
+typedef CLIB_PACKED (struct {
+ dhcpv6_option_t opt;
+ u16 link_type;
+ u8 data[6]; // data[0]:data[5]: MAC address
+}) dhcpv6_client_mac_t;
+
+
+#endif /* included_vnet_dhcp6_packet_h */