/* *----------------------------------------------------------------------------- * * 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__ */