dhcp: Move to plugin

Type: feature

Change-Id: I3fe27a8ef577741d9a5c4f090ec91cf68fb44fe3
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 271 insertions, 0 deletions

diff --git a/src/plugins/dhcp/dhcp6_packet.h b/src/plugins/dhcp/dhcp6_packet.h
new file mode 100644
index 00000000000..d5467952a64
--- /dev/null
+++ b/src/plugins/dhcp/dhcp6_packet.h
@@ -0,0 +1,271 @@
+#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;
+
+/* Name, code, min payload length */
+#define dhcpv6_foreach_option \
+  _(CLIENTID         , 1  , 4 ) \
+  _(SERVERID         , 2  , 4 ) \
+  _(IA_NA            , 3  , 12) \
+  _(IA_TA            , 4  , 4 ) \
+  _(IAADDR           , 5  , 24) \
+  _(ORO              , 6  , 0 ) \
+  _(PREFERENCE       , 7  , 1 ) \
+  _(ELAPSED_TIME     , 8  , 2 ) \
+  _(RELAY_MSG        , 9  , 0 ) \
+  _(AUTH             , 11 , 11) \
+  _(UNICAST          , 12 , 16) \
+  _(STATUS_CODE      , 13 , 2 ) \
+  _(RAPID_COMMIT     , 14 , 0 ) \
+  _(USER_CLASS       , 15 , 0 ) \
+  _(VENDOR_CLASS     , 16 , 4 ) \
+  _(VENDOR_OPTS      , 17 , 4 ) \
+  _(INTERFACE_ID     , 18 , 0 ) \
+  _(RECONF_MSG       , 19 , 1 ) \
+  _(RECONF_ACCEPT    , 20 , 0 ) \
+  _(DNS_SEARCH       , 24 , 0 ) \
+  _(IA_PD            , 25 , 12) \
+  _(IAPREFIX         , 26 , 25) \
+  _(REMOTEID         , 37 , 4 ) \
+  _(VSS              , 68 , 1 ) \
+  _(CLIENT_LINK_LAYER_ADDRESS, 79 , 2 )
+
+/*
+ * DHCPv6 options types
+ */
+enum
+{
+#define _(a,b,c) DHCPV6_OPTION_##a = b,
+  dhcpv6_foreach_option
+#undef _
+  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_STATUS_NOPREFIX_AVAIL = 6,
+};
+
+/*
+ * 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_
+{
+  u8 msg_type;			//DHCP msg type
+  u8 xid[3];			//Transaction id
+  u8 data[0];
+} dhcpv6_header_t;
+
+/* *INDENT-OFF* */
+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;
+/* *INDENT-ON* */
+
+//Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts
+/* *INDENT-OFF* */
+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;
+/* *INDENT-ON* */
+
+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;
+
+#define dhcpv6_optlen(opt) clib_net_to_host_u16((opt)->length)
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  u16 option;
+  u16 length;
+  u8 data[0];
+}) dhcpv6_option_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  dhcpv6_option_t opt;
+  u16 status_code;
+}) dhcpv6_status_code_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  dhcpv6_option_t opt;
+  u32 int_idx;
+}) dhcpv6_int_id_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  dhcpv6_option_t opt;
+  u8 vss_type;
+  u8 data[0];
+}) dhcpv6_vss_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  dhcpv6_option_t opt;
+  u32 ent_num;
+  u32 rmt_id;
+}) dhcpv6_rmt_id_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  dhcpv6_option_t opt;
+  u16 link_type;
+  u8 data[6];  // data[0]:data[5]: MAC address
+}) dhcpv6_client_mac_t;
+/* *INDENT-ON* */
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; u32 iaid; u32 t1;
+		     u32 t2;
+		     u8 data[0];
+		     }) dhcpv6_ia_header_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; u32 preferred; u32 valid; u8 prefix;
+		     ip6_address_t addr;
+		     }) dhcpv6_ia_opt_pd_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; ip6_address_t addr; u32 preferred;
+		     u32 valid;
+		     }) dhcpv6_ia_opt_addr_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt;
+		     u16 options[0];
+		     }) dhcpv6_oro_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; u16 elapsed_10ms;
+		     }) dhcpv6_elapsed_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; u16 duid_type;
+		     u16 hardware_type;
+		     }) dhcpv6_duid_t;
+
+typedef CLIB_PACKED (struct
+		     {
+		     dhcpv6_option_t opt; u16 status_code;
+		     u8 message[0];
+		     }) dhcpv6_status_t;
+
+
+#endif /* included_vnet_dhcp6_packet_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */