Added vpp intial source code from master branch 17.01.1

Change-Id: I81bdace6f330825a1746a853766779dfb24765fd
Signed-off-by: sreejith <sreejith.surendrannair@linaro.org>

1 files changed, 1582 insertions, 0 deletions

diff --git a/vpp/plugins/vcgn-plugin/vcgn/tcp_header_definitions.h b/vpp/plugins/vcgn-plugin/vcgn/tcp_header_definitions.h
new file mode 100644
index 00000000..02920bcc
--- /dev/null
+++ b/vpp/plugins/vcgn-plugin/vcgn/tcp_header_definitions.h
@@ -0,0 +1,1582 @@
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * Filename: tcp_header_definitions.h
+ *
+ * Description: Layer 2, 3, 4 definitions and header types
+ *
+ * Assumptions and Constraints:
+ *
+ * Copyright (c) 2012-2013 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.
+ *-----------------------------------------------------------------------------
+ */
+
+#ifndef __TCP_HEADER_DEFINITIONS_H__
+#define __TCP_HEADER_DEFINITIONS_H__
+
+/*
+ * A general list of Layer 3 protocols, used by many Layer 2 encaps.
+ *
+ *                       formerly:
+ * TYPE_IP               TYPE_IP10MB
+ * TYPE_ARP              TYPE_RFC826_ARP
+ * TYPE_RARP             TYPE_REVERSE_ARP
+ * TYPE_MPLS             TYPE_TAGSWITCH
+ */
+#define   TYPE_IP                        0x0800
+#define   TYPE_IP_V6                     0x86DD
+#define   TYPE_ARP                       0x0806
+#define   TYPE_RARP                      0x8035
+#define   TYPE_MPLS                      0x8847
+#define   TYPE_CDP                       0x2000
+#define   TYPE_CGMP                      0x2001
+#define   TYPE_LACP                      0x8808 /* 802.3ad */
+#define   TYPE_CLNS                      0xFEFE
+
+#define TYPE_PPPOE_SESSION               0x8864 /* PTA plus */
+#define TYPE_PPPOE_DISCOVERY             0x8863 /* PTA plus */
+
+/*
+ * for atm arp handling
+ */
+#define IN_ATM_ARP_BIT     0x0008
+
+/*
+ * The Layer 2 header structures.
+ */
+
+
+/*
+** HDLC
+*/
+
+typedef struct hdlc_hdr_type {
+    u16 addr;
+    u16 type;
+    u8  data[0];
+} hdlc_hdr_type;
+
+#define    HDLC_ADDR_CMD                 0x0F00
+#define    HDLC_HDR_LEN                  4
+#define    HDLC_BROADCAST_BIT            31
+#define    TYPE_KEEP                     0x8035
+
+#define    HDLC_CLNS  (HDLC_ADDR_CMD<<16|TYPE_CLNS)
+#define    HDLC_CDP   (HDLC_ADDR_CMD<<16|TYPE_CDP)
+#define    HDLC_MPLS  (HDLC_ADDR_CMD<<16|TYPE_MPLS)
+#define    HDLC_IP    (HDLC_ADDR_CMD<<16|TYPE_IP)
+#define    HDLC_IP_V6 (HDLC_ADDR_CMD<<16|TYPE_IP_V6)
+#define    HDLC_KEEPALIVE_CMD (HDLC_ADDR_CMD<<16|TYPE_KEEP)
+
+/*
+** PPP
+*/
+
+typedef struct ppp_comp_hdr_type {
+    union {
+        u8  ppp_u8[4];
+        u16 ppp_u16[2];
+        u32 ppp_u32;
+    } ppp_comp_u;
+} ppp_comp_hdr_type;
+
+#define   PPP_STATION                    0xFF03
+#define   PPP_STATION_LEN                0x2
+#define   PPP_ENDPROTO                   0x01
+#define   PPP_NOT_ENDPROTO               0xfffffffe
+#define   PPP_CONTROL_PROTOCOL_MASK      0x8000
+#define   PPP_CONTROL_PROTOCOL_BIT       15
+#define   PPP_CSCO_LEN                   4
+#define   PPP_RFC1661_LEN                2
+#define   PPP_RFC1661_COMP_LEN           1
+
+#define   TYPE_PPP_IP                    0x0021
+#define   TYPE_PPP_IP_V6                 0x0057
+#define   TYPE_PPP_MPLS_UNICAST          0x0281
+#define   TYPE_PPP_MPLS_CONTROL          0x8281
+#define   TYPE_PPP_CLNS                  0x0023
+#define   TYPE_PPP_CDP                   0x0207
+
+#define   TYPE_PPP_IPCP                  0x8021
+#define   TYPE_PPP_LCP                   0xC021
+#define   TYPE_PPP_PAP                   0xC023
+#define   TYPE_PPP_LQR                   0xC025
+#define   TYPE_PPP_CHAP                  0xC223
+
+
+#define TYPE_PPP_LCP_ECHO_REQUEST               0x09
+/*
+** MultiLink PPP
+*/
+
+#define   MLPPP_FLAGS_FIELD_LEN          4
+#define   MLPPP_BEGIN_MASK               0x80000000
+#define   MLPPP_END_MASK                 0x40000000
+#define   MLPPP_BEGIN_END_MASK           (MLPPP_BEGIN_MASK|MLPPP_END_MASK)
+#define   MLPPP_BEGIN_END_SHIFT          30
+#define   MLPPP_SEQUENCE_NUM_MASK        0x00FFFFFF
+#define   MLPPP_MC_CLASS_ID_MASK         0x3C000000
+#define   MLPPP_MC_CLASS_SHIFT           26
+
+#define   TYPE_PPP_MULTILINK             0x003D
+
+/* these are needed in the micro-code, for optimizations */
+#define   TYPE_PPP_FULL_IP_4             0xff030021
+#define   TYPE_PPP_FULL_IP_3             0xff0321
+#define   TYPE_PPP_FULL_IP_2             0x0021
+#define   TYPE_PPP_FULL_IP_1             0x21
+
+#define   MLPPP_BEGIN_END_MASK_BYTE      0xC0
+#define   MLPPP_BEGIN_BIT                7
+#define   MLPPP_END_BIT                  6
+#define   MLPPP_MC_CLASS_ID_MASK_BYTE    0x3C
+#define   MLPPP_MC_CLASS_ID_SHIFT_BYTE   2
+
+#define   MLPOA_BEGIN_END_SHIFT          24
+
+/*
+** Ethernet ARPA
+*/
+
+
+typedef struct ethernet_arpa_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type;
+    u8  data[0];
+} ethernet_arpa_hdr_type;
+
+typedef struct extension_802p3_type {
+    u16 type;
+    u8  ctl;
+    u8  data[0];
+} extension_802p3_type;
+
+typedef struct ethernet_802p3_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 length;
+    extension_802p3_type extension;
+} ethernet_802p3_hdr_type;
+
+
+typedef struct ethernet_vlan_802p3_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type1;
+    u16 vlan_id;
+    u16 length;
+    extension_802p3_type extension;
+} ethernet_vlan_802p3_hdr_type;
+
+#define   MIN_ETHERNET_PKT_LEN           60
+#define   MAX_ETHERNET_PKT_LEN           1500
+#define   ETHERNET_ARPA_HDR_LEN          14
+#define   ETHERNET_TYPE_FIELD_SIZE       2
+
+
+/*
+** Ethernet 802.1q (VLAN)
+*/
+
+typedef struct ethernet_vlan_hdr_type {
+    u8  dest_addr[6];
+    u8  src_addr[6];
+    u16 type1;
+    u16 vlan_hdr;
+    u16 type2;
+    u8  data[0];
+} ethernet_vlan_hdr_type;
+
+
+/*
+** Ethernet 802.1.q-in-q (QinQ)
+*/
+
+typedef struct ethernet_qinq_hdr_type {
+    u8  dest_addr[6];
+    u8  src_addr[6];
+    u16 type1;
+    u16 vlan_hdr1;
+    u16 type2;
+    u16 vlan_hdr2;
+    u16 type3;
+    u8  data[0];
+} ethernet_qinq_hdr_type;
+
+
+/*
+** Ethernet 802.3ad EtherChannel control
+*/
+
+typedef struct ethernet_lacp_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type;
+    u16 LAcmd;
+    u8  data[0];
+} ethernet_lacp_hdr_type;
+
+
+/*
+** Ethernet 802.1 Bridge (spanning tree) PDU
+*/
+
+typedef struct ethernet_bpdu_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  more[0];
+} ethernet_bpdu_hdr_type;
+
+#define ETH_BPDU_DSAP       0x42
+#define ETH_BPDU_SSAP       0x42
+#define ETH_BPDU_CONTROL    0x03
+#define ETH_BPDU_MATCH      0x424203
+
+
+/************************************************************/
+/*         PTA PLUS ETHERNET ENCAPSULATIONS                      */
+/*
+ * PPPoEoARPA 20 bytes
+ */
+typedef struct ethernet_pppoe_arpa_hdr_type {
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type;
+    /* pppoe hdr at begining of enet payload */
+    u16 vtc;           /* version(4b), type(4b) and code(8b) fields */
+    u16 sid;
+    u16 len;
+    u8  ppp_header[0]; /* PPP header start, no ff03 field present */
+} ethernet_pppoe_arpa_hdr_type;
+
+typedef struct pppoe_hdr_type {
+    /* pppoe hdr at begining of enet payload */
+    u16 vtc;           /* version(4b), type(4b) and code(8b) fields */
+    u16 sid;
+    u16 len;
+    u8  ppp_header[0]; /* PPP header start, no ff03 field present */
+} pppoe_hdr_type;
+
+/*
+** PPPoEoVLAN (802.1p or 802.1q) 24 bytes
+*/
+typedef struct ethernet_pppoe_vlan_hdr_type {
+    u8  dest_addr[6];
+    u8  src_addr[6];
+    u16 type1;
+    u16 vlan_hdr;
+    u16 type2;
+    /* pppoe hdr at begining of enet payload */
+    u16 vtc;           /* version(4b), type(4b) and code(8b) fields */
+    u16 sid;
+    u16 len;
+    u8  ppp_header[0]; /* PPP header start, no ff03 field present */
+} ethernet_pppoe_vlan_hdr_type;
+
+/*
+** PPPoEoQinQ 28 bytes
+*/
+typedef struct ethernet_pppoe_qinq_hdr_type {
+    u8  dest_addr[6];
+    u8  src_addr[6];
+    u16 type1;
+    u16 vlan_hdr1;
+    u16 type2;
+    u16 vlan_hdr2;
+    u16 type3;
+    /* pppoe hdr at begining of enet payload */
+    u16 vtc;           /* version(4b), type(4b) and code(8b) fields */
+    u16 sid;
+    u16 len;
+    u8  ppp_header[0]; /* PPP header start, no ff03 field present */
+} ethernet_pppoe_qinq_hdr_type;
+
+#define  ETH_PPPOE_ARPA_HDR_LEN   sizeof(ethernet_pppoe_arpa_hdr_type)
+#define  ETH_PPPOE_VLAN_HDR_LEN   sizeof(ethernet_pppoe_vlan_hdr_type)
+#define  ETH_PPPOE_QINQ_HDR_LEN   sizeof(ethernet_pppoe_qinq_hdr_type)
+#define  PPPOE_HDR_LEN  6
+/*    End PTA PLUS ETHERNET ENCAPSULATIONS                           */
+/****************************************************************/
+
+
+
+#define   TYPE_DOT1Q                     0x8100
+#define   DOT1Q_HDR_LEN                  18
+#define   DOT1Q_VLAN_ID_MASK             0x0FFF
+#define   DOT1Q_VLAN_ID_RES_0            0x0000
+#define   DOT1Q_VLAN_ID_RES_4095         0x0FFF
+#define   DOT1Q_ARPA_INDEX               DOT1Q_VLAN_ID_RES_0
+
+#define   TYPE_QINQ_91                   0x9100
+#define   TYPE_QINQ_92                   0x9200
+#define   TYPE_QINQ_88A8                 0x88A8
+#define   QINQ_HDR_LEN                   22
+
+/*
+ * 802.1p support
+ */
+#define  DOT1P_VLAN_COS_MASK  0xE000
+#define  DOT1P_VLAN_COS_SHIFT 13
+#define  DOT1P_MAX_COS_VALUE  7
+
+/*
+** Frame Relay
+*/
+
+/*
+ *                          formerly:
+ * TYPE_FR_IETF_IPV4        ENCAPS_FR_IETF
+ * TYPE_FR_CISCO_IPV4       ENCAPS_FR_CISCO
+ * TYPE_FR_ISIS             ENCAPS_FR_ISIS
+ *
+ * FR_LMI_DLCI_CISCO        LMI_DLCI_CISCO
+ * FR_LMI_DLCI_IETF         LMI_DLCI_ITUANSI
+ */
+
+typedef struct frame_relay_hdr_type {
+    u16 address;
+    u16 control_nlpid;
+    u8  data[0];
+} frame_relay_hdr_type;
+
+typedef struct fr_snap_hdr_type {
+    u16 address;
+    u8  control;
+    u8  pad;
+    u8  nlpid;
+    u8  oui[3];
+    u16 protocol_id;
+} fr_snap_hdr_type;
+
+#define   FR_ADDR_LEN                    2
+#define   FR_CTL_NLPID_LEN               2
+#define   FR_HDR_LEN                     (FR_ADDR_LEN+FR_CTL_NLPID_LEN)
+
+/*
+ * These defines are for the FR-SNAP header.
+ * The SNAP header is set up solely so that we can
+ * identify ARP packets, which look like this:
+ *
+ *   control  pad  nlpid    oui     protocol_id
+ *     03     00    80    00 00 00    0806
+ */
+#define   FR_ARP_CONTROL                 0x03
+#define   FR_ARP_PAD                     0x00
+#define   FR_ARP_NLPID                   0x80
+#define   FR_ARP_OUI_0                   0x00
+#define   FR_ARP_OUI_1                   0x00
+#define   FR_ARP_OUI_2                   0x00
+/*
+ * these are used only in the tmc code
+ */
+#define   FR_NLPID_OUI_LEN               4
+#define   FR_ARP_CONTROL_PAD             0x0300
+#define   FR_ARP_NLPID_OUI               0x80000000
+
+
+#define   FR_DLCI_UPPER_MASK             0xFC00
+#define   FR_DLCI_UPPER_SHIFT            6
+#define   FR_DLCI_LOWER_MASK             0x00F0
+#define   FR_DLCI_LOWER_SHIFT            4
+
+/*
+ * Defines for converting a DLCI for insertion into a synthesized FR address
+ * field for FRoMPLS disposition.
+
+ * bit 8  7   6   5   4   3   2   1
+ * +-------------------------------+
+ * |             Flag              |
+ * | 0  1   1   1    1   1   1   0 |
+ * +-------------------------------+
+ * |   Upper DLCI          |C/R| 0 |
+ * +-------------------------------+
+ * |  Lower DLCI   | F | B | DE| 1 |
+ * +-------------------------------+
+ * |                               |
+ * :Frame relay information field  :
+ * :       (i.e.payload)           :
+ * |                               |
+ * +-------------------------------+
+ * |   FCS (2 or 4 octets)         |
+ * |                               |
+ * +-------------------------------+
+ * |             Flag              |
+ * | 0  1   1   1    1   1   1   0 |
+ * +-------------------------------+
+ *
+ *   a-With 10 bits for the DLCI
+ */
+#define   FR_DLCI_TO_HDR_UPPER_MASK      0x3f0
+#define   FR_DLCI_TO_HDR_UPPER_SHIFT     (10-4)
+#define   FR_DLCI_TO_HDR_LOWER_MASK      0xf
+#define   FR_DLCI_TO_HDR_LOWER_SHIFT     4
+
+#define   TYPE_FR_IETF_IP                0x03CC
+#define   TYPE_FR_IETF_IP_V6             0x038E
+#define   TYPE_FR_CISCO_IP               0x0800
+#define   TYPE_FR_CISCO_IP_V6            0x86DD
+#define   TYPE_FR_ISIS                   0x0383
+#define   TYPE_FR_SNAP0PAD               0x0380
+#define   TYPE_FR_SNAP1PAD               0x0300
+#define   TYPE_FR_FRF12                  0x03B1
+#define   TYPE_FR_MLP                    0x03CF
+#define   TYPE_FR_EEK                    0x8037
+
+#define   FR_LMI_DLCI_CISCO              1023
+#define   FR_LMI_DLCI_IETF               0
+
+#define   FR_NOT_NOT_NOT                 0
+#define   FR_NOT_NOT_DE                  1
+#define   FR_NOT_BECN_NOT                2
+#define   FR_NOT_BECN_DE                 3
+#define   FR_FECN_NOT_NOT                4
+#define   FR_FECN_NOT_DE                 5
+#define   FR_FECN_BECN_NOT               6
+#define   FR_FECN_BECN_DE                7
+
+#define   FR_FECN_BECN_DE_MASK           0x000E
+#define   FR_FECN_BECN_DE_SHIFT          1
+
+/* Address field extension bit for standard 2-byte FR address field */
+#define   FR_EA1_MASK                    0x0001
+#define   FR_EA1_MASK_BIT                0
+
+/*
+ * these are needed in the micro-code, for optimizations
+ */
+
+/* the bit position (in the address field) of the LSB of the DLCI */
+#define   FR_DLCI_LS_BIT                 4
+
+
+/*
+**
+** MultiLink Frame Relay
+**
+*/
+
+typedef struct mlfr_hdr_type {
+    u16 frag_hdr;
+    u16 address;
+    u16 control_nlpid;
+    u8  data[0];
+} mlfr_hdr_type;
+
+/*
+ * LIP frames have B, E and C set--the other
+ *  bits in the frag_hdr field are irrelevant.
+ *
+ * NOTE: Injected LIP packets have a frag_hdr of 0xE100.
+ *
+ */
+#define   MLFR_LIP_FRAME                 0xE100
+#define   MLFR_LIP_MASK                  0xE000
+#define   MLFR_FRAG_HDR_LEN              2
+
+#define   MLFR_BEGIN_MASK                0x8000
+#define   MLFR_END_MASK                  0x4000
+#define   MLFR_BEGIN_END_MASK            (MLFR_BEGIN_MASK|MLFR_END_MASK)
+#define   MLFR_BEGIN_END_SHIFT           14
+
+#define   MLFR_SEQ_NUM_HI_MASK           0x1E00
+#define   MLFR_SEQ_NUM_HI_SHIFT          1
+#define   MLFR_SEQ_NUM_LO_MASK           0x00FF
+
+/*
+ * these are needed in the micro-code, for optimizations
+ */
+#define   MLFR_BEGIN_END_MASK_BYTE       0xC0
+
+
+/*
+ * FRF.12 definitions
+ */
+typedef struct frf12_hdr_type_ {
+    u16 address;
+    u16 control_nlpid;
+    u16 frag_hdr;
+    u8  data[0];
+} frf12_hdr_type;
+
+#define   FRF12_FRAG_HDR_LEN             sizeof(frf12_hdr_type)
+
+#define   FRF12_BEGIN_MASK               0x8000
+#define   FRF12_END_MASK                 0x4000
+#define   FRF12_BEGIN_END_MASK           (FRF12_BEGIN_MASK|FRF12_END_MASK)
+#define   FRF12_BEGIN_END_SHIFT          8
+
+#define   FRF12_SEQ_NUM_HI_MASK          0x1E00
+#define   FRF12_SEQ_NUM_HI_SHIFT         1
+#define   FRF12_SEQ_NUM_LO_MASK          0x00FF
+#define   FRF12_BEGIN_END_MASK_BYTE      0xC0
+
+
+
+/*
+**
+** MLP over Frame Relay
+**  The ppp hdr can be either a
+**   an MLP hdr or a PPP hdr
+**
+**   MLP can be compressed or not:
+**     a) 0xff03003d
+**     b) 0x003d
+**     c) 0x3d
+**    followed by:
+**     1 byte with begin/end bits
+**     3 bytes of a sequence #
+**
+**  PPP can be also be compressed or not.
+**    Only these will be fwded:
+**     a) 0xff030021
+**     b) 0xff0321
+**     c) 0x0021
+**     d) 0x21
+**
+**
+*/
+typedef struct mlpofr_hdr_type {
+    u16 address;
+    u16 control_nlpid;
+    u8  ppp_header[0];
+} mlpofr_hdr_type;
+
+/*
+** ATM -
+*/
+
+/*
+ * channel_handle is defined as follows:
+ *
+ * bits 15      = reserved (must be 0)
+ * bits 14 - 0  = channel handle
+ *
+ *
+ * flags is a bitfield defined as follows:
+ *
+ * bits 15 - 13 = proto (PPPoA RFC1661 = 0,
+ *                       PPPoE = 1,
+ *                       RBE = 2,
+ *                       PPPoA Cisco = 3,
+ *                       MLPoATM RFC1661 = 4,
+ *                       MLPoATM Cisco  = 5,
+ *                       Reserved = 6-7)
+ * bit       12 = encap (MUX=0,
+ *                       SNAP=1)
+ * bits 11 -  6 = reserved (must be 0)
+ * bits  5 -  3 = pkt_type (AAL5 pkt = 0,
+ *                          Raw cell (includes F4 OAM) = 1,
+ *                          F5 segment OAM cell = 2
+ *                          F5 end-to-end OAM cell = 3
+ *                          Reserved = 4-7)
+ * bit        2 = EFCI (congestion indication)
+ * bit        1 = reserved (must be 0)
+ * bit        0 = CLP (cell loss priority)
+ */
+
+typedef struct apollo_atm_generic_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+} apollo_atm_generic_hdr_type;
+
+typedef struct apollo_atm_aal5_snap_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  oui[3];
+    u16 type;
+    u8  data[0];
+} apollo_atm_aal5_snap_hdr_type;
+
+typedef struct atm_aal5_snap_hdr_type {
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  oui[3];
+    u16 pid;
+    u16 pad;
+    u8  data[0];
+} atm_aal5_snap_hdr_type;
+
+
+typedef struct apollo_atm_aal5_snap_hdr1_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  oui0;
+    u8  oui1;
+    u8  oui2;
+    u16 type;
+    u8  data[0];
+} apollo_atm_aal5_snap_hdr1_type;
+
+typedef struct apollo_atm_aal5_clns_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u16 type;
+    u16 data;
+} apollo_atm_aal5_clns_hdr_type;
+
+typedef struct apollo_atm_aal5_ilmi_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  data[0];
+} apollo_atm_aal5_ilmi_hdr_type;
+
+typedef struct apollo_atm_aal5_mux_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  data[0];
+} apollo_atm_aal5_mux_hdr_type;
+
+typedef struct apollo_atm_oam_f4_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    /*
+     * gcf_vpi_vci_pt_clp is a bitfield defined as follows:
+     *
+     * bits 31 - 28 = GCF
+     * bits 27 - 20 = VPI
+     * bits 19 -  4 = VCI
+     * bits  3 -  1 = PT
+     * bit        0 = CLP
+     */
+    u32 gcf_vpi_vci_pt_clp;
+    u8  data[0];
+} apollo_atm_oam_f4_hdr_type;
+
+#define APOLLO_ATM_OAM_F4_HDR_PT_MASK     0xE
+#define APOLLO_ATM_OAM_F4_HDR_PT_SHIFT    1
+
+typedef struct apollo_atm_oam_f5_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  data[0];
+} apollo_atm_oam_f5_hdr_type;
+
+#define   APOLLO_IRONBUS_EXT_LESS_PROTO    0xFFFF0FFF
+#define   APOLLO_CHANNEL_HANDLE_MASK       0xFFFF
+#define   APOLLO_PKT_TYPE_MASK             0x0038
+#define   APOLLO_PKT_TYPE_SHIFT            3
+#define   APOLLO_FLAG_CLP_MASK             0x0001
+#define   APOLLO_FLAG_CLP_BIT              0
+
+#define   APOLLO_CHANNEL_HANDLE_RES_0      0x0000
+/*
+ * The 1 byte HEC field is removed by the line card.
+ */
+#define   APOLLO_F4_RX_CELL_SIZE           52
+#define   APOLLO_F5_RX_CELL_SIZE           52
+
+#define   APOLLO_ATM_PACKET_TYPE_AAL5      0
+#define   APOLLO_ATM_PACKET_TYPE_F4        1
+#define   APOLLO_ATM_PACKET_TYPE_F5_SEG    2
+#define   APOLLO_ATM_PACKET_TYPE_F5_E_TO_E 3
+#define   APOLLO_ATM_PACKET_TYPE_4         4
+#define   APOLLO_ATM_PACKET_TYPE_5         5
+#define   APOLLO_ATM_PACKET_TYPE_6         6
+#define   APOLLO_ATM_PACKET_RESERVED       7 
+
+#define   APOLLO_AAL5_MUX_IP_HDR_LEN       4
+#define   APOLLO_AAL5_SNAP_HDR_LEN         12
+
+#define   APOLLO_RCV_IRON_BUS_EXT_LEN      4
+#define   APOLLO_TX_IRON_BUS_EXT_LEN       8
+
+/*
+ * MLPoA type definitions
+ */
+#define MLPOA_CISCO_HDR                    0xFF03
+#define MLPOA_SNAP_HDR_LEN                 4
+#define MLPOA_CISCO_HDR_LEN                2
+
+/************************************************************/
+/*         PTA PLUS ATM ENCAPSULATIONS                      */
+
+/* RBE header 28 bytes*/
+typedef struct apollo_atm_aal5_llcsnap_rbe_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  oui[3];
+    u16 pid;
+    u16 pad;
+    /* enet header within */
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type;
+    u8  data[0]; /* start of IP */
+} apollo_atm_aal5_llcsnap_rbe_hdr_type;
+
+/* PPPoEoA header 34 bytes*/
+typedef struct apollo_atm_aal5_llcsnap_pppoe_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  oui[3];
+    u16 pid;
+    u16 pad;
+    /* enet header within */
+    u8  daddr[6];
+    u8  saddr[6];
+    u16 type;
+    /* pppoe hdr at begining of enet payload */
+    u16 vtc;           /* version(4b), type(4b) and code(8b) fields */
+    u16 sid;
+    u16 len;
+    u8  ppp_header[0]; /* PPP header start, no ff03 field present */
+} apollo_atm_aal5_llcsnap_pppoe_hdr_type;
+
+
+/* PPPoA MUX 4 bytes*/
+typedef struct apollo_atm_aal5_mux_pppoa_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  ppp_header[0];
+} apollo_atm_aal5_mux_pppoa_hdr_type;
+
+
+/* PPPoA SNAP LLC 8 bytes */
+typedef struct apollo_atm_aal5_llcsnap_pppoa_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  nlpid;
+    u8  ppp_header[0];
+} apollo_atm_aal5_llcsnap_pppoa_hdr_type;
+
+/* MLPoA MUX (generic) */
+typedef struct apollo_atm_aal5_mux_mlpoa_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  ppp_header[0];
+} apollo_atm_aal5_mux_mlpoa_hdr_type;
+
+/* MLPoA SNAP LLC */
+typedef struct apollo_atm_aal5_llcsnap_mlpoa_hdr_type {
+    u16 channel_handle;
+    u16 flags;
+    u8  dsap;
+    u8  ssap;
+    u8  control;
+    u8  nlpid;
+    u8  ppp_header[0];
+} apollo_atm_aal5_llcsnap_mlpoa_hdr_type;
+
+
+#define PPPOA_SNAPLLC_HDR_LEN   sizeof(apollo_atm_aal5_llcsnap_pppoa_hdr_type)
+#define PPPOA_MUX_HDR_LEN       sizeof(apollo_atm_aal5_mux_pppoa_hdr_type)
+#define PPPOE_SNAPLLC_HDR_LEN   sizeof(apollo_atm_aal5_llcsnap_pppoe_hdr_type)
+#define RBE_SNAPLLC_HDR_LEN     sizeof(apollo_atm_aal5_llcsnap_rbe_hdr_type)
+
+/*    End PTA PLUS ATM ENCAPSULATIONS                           */
+/****************************************************************/
+
+#define   LLCSNAP_PID_DOT3_NOFCS           0x0007
+
+/*
+** the SNAP header
+*/
+
+/*
+ * Note that some of these definitions are split
+ * up along certain word or half word boundaries
+ * to help expediate the TMC code.
+ */
+#define   LLC_SNAP_HDR_DSAP                0xAA
+#define   LLC_SNAP_HDR_SSAP                0xAA
+#define   LLC_SNAP_HDR_CONTROL             0x03
+#define   LLC_SNAP_HDR_OUI_0               0x00
+#define   LLC_SNAP_HDR_OUI_1               0x00
+#define   LLC_SNAP_HDR_OUI_2               0x00
+#define   LLC_SNAP_HDR_OUI_2_CDP           0x0C
+
+#define   LLC_SNAP_HDR_DSAP_SSAP           0xAAAA
+#define   LLC_SNAP_HDR_DSAP_SSAP_CTRL_OUI0 0xAAAA0300
+#define   LLC_SNAP_HDR_CONTROL_OUI         0x03000000
+#define   LLC_SNAP_HDR_OUI1_OUI2_CDP       0x000C2000
+
+
+
+/*
+** SRP
+*/
+
+/*
+ * The v2_gen_hdr is a 2-byte field that contains the following:
+ *
+ *      [ ttl | ring_id | mode | priority | parity ]
+ * bits    8       1        3        3         1
+ */
+typedef struct srp_hdr_type {
+    u16 v2_gen_hdr;
+    u8  dest_addr[6];
+    u8  src_addr[6];
+    u16 protocol;
+    u8  data[0];
+} srp_hdr_type;
+
+#define   SRP_HDR_LEN                      16
+
+#define   SRP_IB_CHANNEL_CONTROL           0x0000
+#define   SRP_IB_CHANNEL_DATA_HI           0x0001
+#define   SRP_IB_CHANNEL_DATA_LO           0x0002
+
+#define   SRP_RING_ID_MASK                 0x0080
+#define   SRP_RING_ID_BIT                  7
+
+#define   SRP_MODE_BITS_MASK               0x0070
+#define   SRP_MODE_BITS_SHIFT              4
+#define   SRP_MODE_CONTROL_TOPOLOGY        4
+#define   SRP_MODE_CONTROL_IPS             5
+#define   SRP_MODE_DATA                    7
+
+#define   SRP_PRIORITY_BITS_MASK           0x000E 
+#define   SRP_PRIORITY_BITS_SHIFT          1
+#define   SRP_PRIORITY_HIGH                7
+#define   SRP_PRIORITY_PAK_PRIORITY        6
+
+/* this is for the tmc code */
+#define   SRP_INV_PRIORITY_BITS_MASK       0xFFF1
+
+#define   SRP_PROT_CONTROL_TOPOLOGY        0x2007
+#define   SRP_PROT_CONTROL_IPS             0x2007
+
+/* this is for the tmc code */
+#define   SRP_TRUE                         1
+#define   SRP_FALSE                        0
+
+/*
+** MPLS
+*/
+#define   MPLS_EOS_BIT                     0x00000100
+#define   MPLS_EOS_SHIFT                   8
+#define   MPLS_LABEL_SIZE                  4
+#define   MAX_MPLS_LABEL_STACK             6
+#define   MPLS_LABEL_MASK                  0xfffff000
+#define   MPLS_LABEL_SHIFT                 12
+#define   MPLS_TTL_MASK                    0x000000ff
+#define   MPLS_EXP_MASK                    0x00000e00
+#define   MPLS_EXP_SHIFT                   9
+#define   MPLS_EXP_TTL_MASK                0x00000eff
+
+
+
+typedef union _layer2 {
+    hdlc_hdr_type                           hdlc;
+    ppp_comp_hdr_type                       ppp;
+    ethernet_arpa_hdr_type                  eth_arpa;
+    ethernet_vlan_hdr_type                  eth_vlan;
+    ethernet_qinq_hdr_type                  eth_qinq;
+    ethernet_lacp_hdr_type                  eth_lacp;
+    ethernet_bpdu_hdr_type                  eth_bpdu;
+    ethernet_802p3_hdr_type                 eth_802p3;
+    ethernet_vlan_802p3_hdr_type            eth_vlan_802p3;
+    ethernet_pppoe_arpa_hdr_type            eth_pppoe_arpa; /* PTA plus */
+    ethernet_pppoe_vlan_hdr_type            eth_pppoe_vlan; /* PTA plus */
+    ethernet_pppoe_qinq_hdr_type            eth_pppoe_qinq; /* PTA plus */
+    frame_relay_hdr_type                    frame_relay;
+    fr_snap_hdr_type                        fr_snap;
+    mlfr_hdr_type                           mlfr;
+    mlpofr_hdr_type                         mlpofr;
+    frf12_hdr_type                          frf12;
+    apollo_atm_generic_hdr_type             atm_generic;
+    apollo_atm_aal5_snap_hdr_type           atm_aal5_snap;
+    apollo_atm_aal5_snap_hdr1_type          atm_aal5_snap1;
+    apollo_atm_aal5_clns_hdr_type           atm_aal5_clns;
+    apollo_atm_aal5_ilmi_hdr_type           atm_aal5_ilmi;
+    apollo_atm_aal5_mux_hdr_type            atm_aal5_mux;
+    apollo_atm_oam_f4_hdr_type              atm_oam_f4;
+    apollo_atm_oam_f5_hdr_type              atm_oam_f5;
+    apollo_atm_aal5_llcsnap_rbe_hdr_type    atm_aal5_rbe_snapllc;   /* PTA plus */
+    apollo_atm_aal5_llcsnap_pppoe_hdr_type  atm_aal5_pppoe_snapllc; /* PTA plus */
+    apollo_atm_aal5_mux_pppoa_hdr_type      atm_aal5_pppoa_mux;     /* PTA plus */
+    apollo_atm_aal5_llcsnap_pppoa_hdr_type  atm_aal5_pppoa_snapllc; /* PTA plus */
+    apollo_atm_aal5_mux_mlpoa_hdr_type      mlpoa_generic;
+    apollo_atm_aal5_llcsnap_mlpoa_hdr_type  mlpoa_snapllc;
+    srp_hdr_type                            srp;
+} layer2_t;
+
+/*
+ * Define the Common OAM cell format - F4 & F5 cells
+ *  For F4 cells:
+ *      VPI == User VPI
+ *      VCI == (3 == Segment), (4 == End-to-End)
+ *
+ *  For F5 cells:
+ *      VPI == User VPI
+ *      VCI == User VCI
+ *      PT == (100 == Segment, 101 == End-to-End)
+ * 
+ *      OAM Cell Type & Function Type:
+ *
+ *      OAM_TYPE = (0001 == Fault management)
+ *      OAM_FUNC == (0000 == AIS, 0001 == RDI, 0100 == CC,
+ *                           1000 == loopback)
+ *
+ *      OAM_TYPE = (0010 == Performance management)
+ *      OAM_FUNC == (0000 == Forward Monitoring(FM), 
+ *                           0001 == Backward monitoring(BR), 
+ *                           0010 == Monitoring & reporting (FM+BR))
+ *
+ *              OAM_TYPE = (1000 == Activation/Deactivation)
+ *      OAM_FUNC == (0000 == Performance Monitoring, 
+ *                           0001 == Continuity Check)
+ *            
+ *              OAM_TYPE = (1111 == Sytem Management)
+ *      OAM_FUNC == (0001 == Security - non-real-time, 
+ *                           0010 == Security - real-time)
+ *
+ */
+#define ATM_OAM_FAULT_MGMT  0x1 /* OAM Fault mgmt. code */
+#define ATM_OAM_PRFRM_MGMT      0x2     /* performance mgmt code */
+#define ATM_OAM_ACT_DEACT       0x8     /* OAM Activation/Deactivation
+                                           code */
+#define ATM_OAM_SYSTEM_MGMT     0xF     /* System Management code */
+
+#define ATM_OAM_AIS_FUNC    0x0 /* AIS function type */
+#define ATM_OAM_RDI_FUNC    0x1 /* RDI function type */
+#define ATM_OAM_CC_FUNC     0x4 /* OAM CC FM function code */
+#define ATM_OAM_LOOP_FUNC   0x8 /* Loopback function type */
+
+#define ATM_OAM_F5_SEGMENT  0x4     /* Segment function */
+#define ATM_OAM_F5_ENDTOEND 0x5     /* End-to-End function */
+#define ATM_OAM_F4_SEGMENT  0x3     /* Segment function */
+#define ATM_OAM_F4_ENDTOEND 0x4     /* End-to-End function */
+#define ATM_OAM_F4_PTI_ZERO     0x0             /* PTI=0 for F4 OAM */
+
+typedef struct  atm_oam_hdr_t_ {
+    unsigned    oam_gfc:4;          /* GFC */
+    unsigned    oam_vpi:8;          /* VPI */
+    unsigned    oam_vci_ms:4;         /* VCI (Most Significant Bits) */
+
+    unsigned    oam_vci_ls:12;        /* VCI (Least Significant Bits) */
+    unsigned    oam_pt:3;           /* Payload Type */
+    unsigned    oam_clp:1;          /* Cell Loss Priority */
+    u8  data[0];
+} atm_oam_hdr_t;
+
+typedef struct  atm_oam_type_func_t_ {
+    u8  oam_type:4;
+    u8  oam_func:4;
+    u8  data[0];
+} atm_oam_type_func_t;
+
+/*
+** IP Version 4 header
+*/
+
+/*
+ * version_hdr_len_words [7-4]   IP Header Version
+ *                       [3-0]   IP Header Length in 32-bit words
+ * tos                   Type of Service
+ * total_len_bytes       Total IP datagram length in bytes
+ *                       (including IP header)
+ * identification        Unique fragmentation identifier
+ * frag_flags_offset     [15-13] Fragmentation flags
+ *                       [12-0]  Fragmentation Offset
+ * ttl                   Time To Live
+ * protocol_id           Protocol Identifier
+ * checksum              16-bit 1's complement IP Header checksum
+ * src_addr              IP Source Address
+ * dest_addr             IP Destination Address
+ */
+typedef struct ipv4_header {
+    u8  version_hdr_len_words;
+    u8  tos;
+    u16 total_len_bytes;
+    u16 identification;
+    u16 frag_flags_offset;
+    u8  ttl;
+    u8  protocol;
+    u16 checksum;
+    u32 src_addr;
+    u32 dest_addr;
+    u8  data[0];
+} ipv4_header;
+
+/*OPTIONS PACKET TYPE 
+ * +-+-+-+-+-+-+-+-+
+ * |C| CL|    OP   |
+ * +-+-+-+-+-+-+-+-+
+ */
+typedef struct ipv4_options {
+    u8 copy     :1 ;
+    u8 op_class :2 ;
+    u8 option   :5 ;
+    u8 pad ;
+}ipv4_options;
+
+#define LOOSE_SOURCE_ROUTE  131
+#define STRICT_SOURCE_ROUTE 137
+#define IPV4_NO_OPTIONS_HDR_LEN (sizeof(ipv4_header))
+#define IPV4_VERSION 4
+#define IPV4_HEADER_LENGTH_WORDS 5
+#define IPV4_VERSION_HDR_LEN_FIELD  ((u8) 0x45)
+#define IPV4_HEADER_LENGTH_WORDS 5
+#define IPV4_MIN_HEADER_LENGTH_BYTES 20
+#define IP_HDR_LEN sizeof(ipv4_header)
+#define IPV4_VERSION_VALUE_SHIFT 4
+
+#define IPV4_FRAG_OFFSET_MASK (0x1fff)
+#define IPV4_FRAG_MF_MASK     (0x2000)
+#define IPV4_FRAG_MF_SHIFT    (13)
+
+/* 0.0.0.0 */
+#define IP_BOOTP_SOURCE_ADDRESS 0
+/* 255.255.255.255 */
+#define IP_LIMITED_BROADCAST_ADDRESS 0xFFFFFFFF
+
+/*
+ * IPv4 header - version & length fields
+ */
+#define IP_VER_LEN          0x45
+#define IP_VER              0x4
+#define IP_MIN_LEN          0x5
+#define IP_VER_MASK         0xf0
+#define IP_LEN_MASK         0x0f
+
+/*
+ * IPv4 header - TOS field
+ */
+#define PS_IP_TOS_MASK      0xff
+#define IP_PRECEDENCE_SHIFT 5     /* shift value up to precedence bits */
+#define IP_DSCP_SHIFT       2     /* shift value up to dscp bits */
+
+#define IP_TOS_PRECEDENCE       0xe0    /* mask of precedence in tos byte */
+#define IP_TOS_NO_PRECEDENCE    0x1f
+#define IP_TOS_LOW_DELAY        8       /* values must be shifted 1 bit */
+#define IP_TOS_HIGH_TPUT        4       /* before using */
+#define IP_TOS_HIGH_RELY        2
+#define IP_TOS_LOW_COST         1
+#define IP_TOS_NORMAL           0
+#define IP_TOS_MASK             0x1e    /* mask of tos in tos byte */
+#define IP_TOS_MBZ_MASK         0x01    /* mask for MZB bit in tos byte */
+#define IP_TOS_DSCP             0xfc    /* mask for dscp in tos byte */
+#define IP_TOS_NO_DSCP          0x03
+
+#define IP_TOS_METRIC_TYPES     8
+#define IP_TOS_SHIFT            1
+
+#define IP_TOS_PRECEDENCE_MASK  (IP_TOS_PRECEDENCE | IP_TOS_MASK)
+
+/*
+ * IP TOS Precedence values (High order 3 bits)
+ */
+#define TOS_PREC_NET_CONTROL    0xe0
+#define TOS_PREC_INET_CONTROL   0xc0
+#define TOS_PREC_CRIT_ECP       0xa0
+#define TOS_PREC_FLASH_OVER     0x80
+#define TOS_PREC_FLASH          0x60
+#define TOS_PREC_IMMEDIATE      0x40
+#define TOS_PREC_PRIORITY       0x20
+#define TOS_PREC_ROUTINE        0x00
+#define TOS_PREC_ILLEGAL        0xff    /* invalid precedence value */
+
+#define TOS_PREC_NET_CONTROL_NUM   7
+#define TOS_PREC_INET_CONTROL_NUM  6
+#define TOS_PREC_CRIT_ECP_NUM      5
+#define TOS_PREC_FLASH_OVER_NUM    4
+#define TOS_PREC_FLASH_NUM         3
+#define TOS_PREC_IMMEDIATE_NUM     2
+#define TOS_PREC_PRIORITY_NUM      1
+#define TOS_PREC_ROUTINE_NUM       0
+
+
+
+/*
+ * IPv4 header - flags and fragment offset fields
+ */
+#define IP_FRAG_OFFSET_MASK 0x1fff
+
+
+#define IP_FRAG_MORE_MASK   0x2000
+#define IP_FRAG_DF_MASK     0x4000
+#define IP_FRAG_UNDEF_MASK  0x8000
+#define IP_FRAG_NO_DF_SET   0x0000
+
+/* bit definitions for fragment flags */
+#define IP_FRAG_MORE_BIT       13
+#define IP_FRAG_DF_BIT         14
+#define IP_FRAG_UNDEF_BIT      15
+
+/*
+ * IPv4 header - TTL field
+ */
+#define TTL_DEFAULT     255
+#define TTL_1           1
+#define TTL_2           2
+#define TTL_255         255
+
+
+/*
+ * IPv4 header - protocol field
+ *
+ * ICMP_PROT      1    ICMP
+ * IGMP_PROT      2    group management
+ * GGP_PROT       3    GGP
+ * IPINIP_PROT    4    IPv4 in IPv4 encapsulation
+ * TCP_PROT       6    TCP
+ * EGP_PROT       8    EGP
+ * IGRP_PROT      9    IGRP
+ * UDP_PROT       17   UDP
+ * HMP_PROT       20   HMP
+ * RDP_PROT       27   RDP
+ * IPV6_INIP_PROT 41   IPV6 in IPv4 encapsulation
+ * RSVP_PROT      46   RSVP
+ * GRE_PROT       47   GRE
+ * ESP_PROT       50   ESP
+ * AHP_PROT       51   AHP
+ * SDNS0_PROT     53   SNDS
+ * NHRP_PROT      54   NHRP
+ * SDNS1_PROT     55   SDNS1
+ * HELLO_PROT     63   HELLO
+ * ND_PROT        77   ND
+ * EONIP_PROT     80   CLNS over IP
+ * VINES_PROT     83   Banyan Vines
+ * NEWIGRP_PROT   88   IGRP
+ * OSPF_PROT      89   OSPF
+ * FST_RSRB_PROT  90   RSRB
+ * FST_DLSW_PROT  91   DLSW
+ * NOSIP_PROT     94   KA9Q/NOS compatible IP over IP
+ * PIM_PROT       103  PIMv2
+ * PCP_PROT       108  PCP
+ * PGM_PROT       113  PGM
+ * MAX_PROT       113  maximum protocol number in the above list,
+ *                      used in creating case registry
+ */
+#define ICMP_PROT       1
+#define IGMP_PROT       2
+#define GGP_PROT        3
+#define IPINIP_PROT     4
+#define TCP_PROT        6
+#define EGP_PROT        8
+#define IGRP_PROT       9
+#define UDP_PROT        17
+#define HMP_PROT        20
+#define RDP_PROT        27
+#define IPV6_INIP_PROT  41
+#define RSVP_PROT       46
+#define GRE_PROT        47
+#define ESP_PROT        50
+#define AHP_PROT        51
+#define SDNS0_PROT      53
+#define NHRP_PROT       54
+#define SDNS1_PROT      55
+#define HELLO_PROT      63
+#define ND_PROT         77
+#define EONIP_PROT      80
+#define VINES_PROT      83
+#define NEWIGRP_PROT    88
+#define OSPF_PROT       89
+#define FST_RSRB_PROT   90
+#define FST_DLSW_PROT   91
+#define NOSIP_PROT      94
+#define PIM_PROT        103
+#define PCP_PROT        108
+#define PGM_PROT        113
+#define MAX_PROT        113
+
+/*Well Known Application ports */
+#define FTP_PORT        21  /* For control connection */
+/*
+ * TCP header
+ */
+typedef struct tcp_hdr_type {
+    u16 src_port;
+    u16 dest_port;
+    u32 seq_num;
+    u32 ack_num;
+    u8  hdr_len;
+    u8  flags;
+    u16 window_size;
+    u16 tcp_checksum;
+    u16 urgent_pointer;
+    u8  option_data[0];
+} tcp_hdr_type;
+
+#define TCP_FLAG_FIN    0x01
+#define TCP_FLAG_SYN    0x02
+#define TCP_FLAG_RST    0x04
+#define TCP_FLAG_PUSH   0x08
+#define TCP_FLAG_ACK    0x10
+#define TCP_FLAG_URG    0x20
+#define TCP_FLAG_ECE    0x40
+#define TCP_FLAG_CWR    0x80
+
+/*
+ * TCP Option
+ */
+typedef struct tcp_option_s {
+    u8  kind;
+    u8  length;
+    u8  data[0];
+} tcp_option_t;
+
+#define TCP_END_OPTIONS_LIST       0
+#define TCP_OPTION_NOP             1
+#define TCP_OPTION_MSS             2
+#define TCP_OPTION_WINDOW_SCALE    3
+#define TCP_OPTION_SACK_PERMITTED  4
+#define TCP_OPTION_SACK_DATA       5
+#define TCP_OPTION_ECHO            6
+#define TCP_OPTION_ECHO_REPLY      7
+#define TCP_OPTION_TSOPT           8
+/*
+  9   2   Partial Order Connection Permitted. RFC 1693
+  10  3   Partial Order Service Profile.  RFC 1693
+  11  6   CC, Connection Count.   RFC 1644
+  12  6   CC.NEW  RFC 1644
+  13  6   CC.ECHO RFC 1644
+  14  3   TCP Alternate Checksum Request. RFC 1146
+  15  Variable.   TCP Alternate Checksum Data.    RFC 1146
+  16      Skeeter.     
+  17      Bubba.   
+  18  3   Trailer Checksum Option.     
+*/
+#define TCP_OPTION_MD5_SIGNATURE   19
+/*
+  20      SCPS Capabilities.   
+  21      Selective Negative Acknowledgements.     
+  22      Record Boundaries.   
+  23      Corruption experienced.  
+  24      SNAP.    
+  25           
+  26      TCP Compression Filter.  
+*/
+#define TCP_OPTION_QUICK_START     27
+
+#define TCP_OPTION_NUM_MAX         27
+
+#ifdef TARGET_CISCO
+#define tcp_printf(format_str, params...) //printf(format_str, ## params)
+#else
+#define tcp_printf(format_str, params...) printf(format_str, ## params)
+#endif
+
+typedef struct udp_hdr_type {
+  u16 src_port;
+  u16 dest_port;
+  u16 udp_length;
+  u16 udp_checksum;
+} udp_hdr_type_t;
+
+#define TYPE_IPV6 0x86dd
+#define TYPE_IPV4 0x0800
+
+/*
+ * version_trafficclass_flowlabel [31:28] IP Header Version, 
+                                  [27:20] traffic_class, 
+                                  [19:0]  flow_label[20]
+ * payload_length                 Length of packet in bytes excluding header size(s) 
+ * next_header                    Identifies the type of header following the IPv6 header  
+ * hop_limit                      Decremented by 1 by each forwarding node, packet discarded when zero
+ * src_addr                       IPv6 Source Address
+ * dst_addr                       IPv6 Destination Address
+ */
+typedef struct ipv6_header {
+  u32 version_trafficclass_flowlabel;
+  u16 payload_length;
+  u8  next_header;
+  u8  hop_limit;
+  u32 src_addr[4];
+  u32 dst_addr[4];
+  u8  data[0];  
+} ipv6_header_t;
+
+#define IPV6_HDR_LEN 40 
+#define IPV6_HDR_LEN_WORDS 10
+#define IPV6_FLABLE_MASK 0x000FFFFF
+#define IPV6_MIN_PATH_MTU (1280)
+
+#define IPV6_GET_IP_VER(ih) ((clib_net_to_host_u32((ih) \
+                      ->version_trafficclass_flowlabel) >> 28) & 0xf)
+#define IPV6_GET_TOS(ih) ((clib_net_to_host_u32((ih) \
+                      ->version_trafficclass_flowlabel) >> 20) & 0xff)
+#define IPV6_GET_FLOW_LABEL(ih) ((clib_net_to_host_u32((ih) \
+                      ->version_trafficclass_flowlabel)) & 0xfffff)
+
+#define IPV6_VERSION_VALUE                    (6)
+#define IPV6_VERSION_VALUE_SHIFT              (28)
+#define IPV6_TRAFFIC_CLASS_VALUE_SHIFT        (20)
+#define IPV6_TRAFFIC_CLASS_VALUE_MASK         (0xff)
+
+#define IPV6_PROTO_HOPOPTS      0
+#define IPV6_PROTO_TCP          6       
+#define IPV6_PROTO_UDP          17
+#define IPV6_PROTO_IPV6         41       
+#define IPV6_PROTO_ROUTING      43  
+#define IPV6_PROTO_FRAGMENT     44 
+#define IPV6_PROTO_DESTOPTS     60 
+#define IPV6_PROTO_ESP          50   
+#define IPV6_PROTO_AH           51
+#define IPV6_PROTO_ICMPV6       58
+#define IPV6_PROTO_NONE         59 
+
+/* standard v6 extension header are 2 tytes
+ * one byte next header
+ * one byte header length
+ */
+
+typedef struct ipv6_frag_header {
+    u8 next_header;
+    u8 reserved;
+    u16 frag_offset_res_m;
+    u32 identification;
+} ipv6_frag_header_t;
+
+#define IPV6_FRAG_HDR_LEN (sizeof(ipv6_frag_header_t))
+
+#define IPV6_FRAG_OFFSET_MASK     (0xFFF8)
+#define IPV6_FRAG_OFFSET_SHIFT    (3)
+#define IPV6_FRAG_MORE_FRAG_MASK  (0x0001)
+
+#define IPV6_TOS_SHIFT       20
+#define IPV6_TOS_SHIFT_HLF_WD 4
+#define IPV6_NEXT_HDR_SHIFT  8
+
+typedef struct ipv6_routing_header {
+    u8 next_header;
+    u8 hdr_ext_len;
+    u8 routing_type;
+    u8 segments_left;
+    u8 data[0];
+} ipv6_routing_header_t;
+#define IPV6_ROUTING_HDR_LEN (sizeof(ipv6_routing_header_t))
+
+typedef struct ipv6_hop_header {
+    u8 next_header;
+    u8 hdr_ext_len;
+    u8 options[0];
+} ipv6_hop_header_t;
+#define IPV6_HOP_LEN (sizeof(ipv6_hop_header_t))
+
+typedef struct ipv6_dest_opt_header {
+    u8 next_header;
+    u8 hdr_ext_len;
+    u8 options[0];
+} ipv6_dest_opt_header_t;
+#define IPV6_DESTOPT_LEN (sizeof(ipv6_dest_opt_header_t))
+
+
+/* Definition of ICMP header */
+typedef struct icmp_v4_s {
+    u8 type;
+    u8 code;
+    u16 checksum;
+    u16 identifier;
+    u16 sequence;
+} icmp_v4_t;
+
+#define ICMPV4_HDR_SIZE  (sizeof(icmp_v4_t))
+#define ICMPV4_ECHOREPLY 0                /* Type: echo reply */
+#define ICMPV4_ECHO      8                /* Type: echo request */
+
+#define ICMPV4_UNREACHABLE 3              /* Type: destination unreachable */
+#define ICMPV4_UNRNET 0                   /* Code: Net unreachable  */
+#define ICMPV4_UNRHOST 1                  /* Code: host unreachable */
+#define ICMPV4_UNRPROT 2                  /* Code: protocol unreachable */
+#define ICMPV4_UNRPORT 3                  /* Code: port unreachable */
+#define ICMPV4_UNRFRAG 4                  /* Code: frag req DF set  */
+#define ICMPV4_UNRADMIN 13                /* Code: administratively prohib. */
+#define ICMPV4_SOURCEROUTE_FAILED 5       /* Code: administratively prohib. */
+
+#define ICMPV4_SRC_ROUTE_FAIL 5           /* Code: Source Route Failed */
+#define ICMPV4_NO_ROUTE_DESTN_8 8         /* Code: No Route to Destn */
+#define ICMPV4_NO_ROUTE_DESTN_11 11       /* Code: No Route to Destn */
+#define ICMPV4_NO_ROUTE_DESTN_12 12       /* Code: No Route to Destn */
+
+#define ICMPV4_ADMIN_PROH_9 9             /* Code: Administratively Prohibited */
+#define ICMPV4_ADMIN_PROH_10 10             /* Code: Administratively Prohibited */
+#define ICMPV4_PREC_CUTOFF 15             /* Code: Precedence Cutoff  */
+
+
+#define ICMPV4_TIMEEXCEEDED 11            /* Type: time exceeded */
+#define ICMPV4_TIMTTL 0                   /* Code: ttl in transit code */
+
+#define ICMPV4_PARAMETER_PROBLEM    12    /* Type: Parameter Problem */
+#define ICMPV4_PARAM_ERROR  0             /* Code: Pointer to Error  */
+#define ICMPV4_MISSING_OPTION_CODE  1     /* Code: Mission option */
+#define ICMPV4_PARAM_BAD_LEN  2           /* Code:  Bad Length */
+
+#define ICMPV4_CONVERSION_ERROR     31
+#define ICMPV4_SOURCE_QUENCH        4
+#define ICMPV4_REDIRECT             5
+#define ICMPV4_TIMESTAMP            13
+#define ICMPV4_TIMESTAMP_REPLY      14
+#define ICMPV4_INFO_REQUEST         15
+#define ICMPV4_INFO_REPLY           16
+#define ICMPV4_ADDR_MASK_REQUEST    17
+#define ICMPV4_ADDR_MASK_REPLY      18
+
+typedef struct icmp_v6_s {
+
+    u8 type;
+    u8 code;
+    u16 checksum;
+
+    u32 data[0];
+} icmp_v6_t;
+
+typedef struct pseudo_v6_header {
+    u32 src_addr[4];
+    u32 dst_addr[4];
+    u16 payload_length;
+    u16 next_header;
+} pseudo_v6_header_t;
+
+
+#define ICMPV6_ECHO                 128
+#define ICMPV6_ECHO_REPLY           129
+#define ICMPV6_PKT_TOO_BIG          2
+#define ICMPV6_TIMEEXCEEDED         3
+#define ICMPV6_TIMTTL               0
+#define ICMPV6_PARAMETER_PROBLEM    4
+#define ICMPV6_UNREACHABLE          1
+#define ICMPV6_NEIGHBOR_SOLICITAION 135
+#define ICMPV6_NEIGHBOR_ADVT        136
+/* ICMP V6 generated packet size */
+#define ICMPV6_ERR_SIZE          48 
+#define ICMPV6_HDR_SIZE          (sizeof(icmp_v6_t) +sizeof(u32))
+
+/* Code for Type 1 */
+#define ICMPV6_UNRDESTN      0  /* Code: No route to Desnt */
+#define ICMPV6_ADM_PROH      1  /* Code: Adminitrative Prohibited */
+#define ICMPV6_SRC_ADD_SCOPE 2  /* Code: Source Address beyond scope */
+#define ICMPV6_UNRHOST       3  /* Code: Host Unreachable */
+#define ICMPV6_UNRPORT       4  /* Code: Port UnReachable */
+
+#define ICMPV6_UNRPROT       1  /* type 4 - Code: No route to Desnt */
+
+#define ICMPV6_PTB_CODE      0  /* Code: For PTB */
+#define ICMPV6_PARAM_CODE    0  /* Code: For Parameter Problem */
+#define ICMPV6_UNREC_HDR     1  /* Code: For Parameter Problem */
+#define ICMPV6_SRC_ADD_FAIL  5  /* Code: For Source address failed */
+#define ICMP_ECHO_REPLY_CODE 0
+#define DEFAULT_TTL_HOPLIMIT_VAL 64
+
+typedef struct pptp_hdr_type {
+
+  u16 flags_ver;
+  u16 proto_type;  /* PPP = 0x880B */
+  u16 payload_len;
+  u16 call_id;
+  u32 seq_no;
+  u32 ack_no;
+
+} pptp_hdr_type_t;
+
+/*
+ * NAME
+ *
+ *   tcp_findoption
+ *
+ * SYNOPSIS
+ *   u8* tcp_findoption (tcp_hdr_t *tcp, uchar option)
+ *
+ * PARAMETERS
+ *   tcp       - pointer to TCP header
+ *   option    - TCP option
+ *
+ * RETURNS
+ *   This function returns a pointer to the option found,
+ *   otherwise returns null.
+ *
+ *
+ * DESCRIPTION
+ *   This function searches the option and returns a pointer to the
+ *   matched option field containing option kind/length/data sub-fields.
+ *
+ */
+static inline u8* tcp_findoption (tcp_hdr_type *tcp, u8 option)
+{
+    u8*data;
+    u8 len, optlen;
+
+    data = tcp->option_data;
+    len = ((tcp->hdr_len>>4) << 2) - sizeof(tcp_hdr_type);
+
+#define         MAXTCPOPTIONBYTES   40
+#define         MINTCPOPTIONLENGTH   2
+
+    while (len) {
+        if (PREDICT_TRUE(option == data[0])) {
+            return (data);
+        } else {
+            switch (data[0]) {
+            case TCP_END_OPTIONS_LIST:
+                return (NULL);
+            case TCP_OPTION_NOP:
+                len -= 1;
+                data += 1;
+                break;
+            default:
+                /* Sanity check the length. */
+                optlen = data[1];
+                if ((optlen < MINTCPOPTIONLENGTH) ||
+                    (optlen > MAXTCPOPTIONBYTES)  ||
+                    (optlen > len)) {
+                    return (NULL);
+                }
+                len -= optlen;
+                data += optlen;
+                break;
+            }
+        }
+    }
+
+    return (NULL);
+}
+
+
+static inline u32 crc_calc (ipv4_header *ipv4)
+{
+    u16 *ipv4_word_ptr = (u16 *) ipv4;
+    u32 crc32;
+    /*
+     * Add all fields except the checksum field
+     */
+    crc32 = (u32)clib_net_to_host_u16(*ipv4_word_ptr)     +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 1)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 2)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 3)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 4)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 6)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 7)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 8)) +
+            (u32)clib_net_to_host_u16(*(ipv4_word_ptr + 9));
+
+    /* Add in the carry of the original sum */
+    crc32 = (crc32 & 0xFFFF) + (crc32 >> 16);
+    /* Add in the carry of the final sum */
+    crc32 = (crc32 & 0xFFFF) + (crc32 >> 16);
+
+    return crc32;
+}
+
+#endif /* __TCP_HEADER_DEFINITIONS_H__ */