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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | /* * L2TP-over-IP socket for L2TPv3. * * Author: James Chapman <jchapman@katalix.com> */ #ifndef _LINUX_L2TP_H_ #define _LINUX_L2TP_H_ #include <linux/types.h> #ifdef __KERNEL__ #include <linux/socket.h> #include <linux/in.h> #else #include <netinet/in.h> #endif #define IPPROTO_L2TP 115 /** * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets * @l2tp_family: address family number AF_L2TPIP. * @l2tp_addr: protocol specific address information * @l2tp_conn_id: connection id of tunnel */ #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ struct sockaddr_l2tpip { /* The first fields must match struct sockaddr_in */ sa_family_t l2tp_family; /* AF_INET */ __be16 l2tp_unused; /* INET port number (unused) */ struct in_addr l2tp_addr; /* Internet address */ __u32 l2tp_conn_id; /* Connection ID of tunnel */ /* Pad to size of `struct sockaddr'. */ unsigned char __pad[sizeof(struct sockaddr) - sizeof(sa_family_t) - sizeof(__be16) - sizeof(struct in_addr) - sizeof(__u32)]; }; /***************************************************************************** * NETLINK_GENERIC netlink family. *****************************************************************************/ /* * Commands. * Valid TLVs of each command are:- * TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid * TUNNEL_DELETE - CONN_ID * TUNNEL_MODIFY - CONN_ID, udpcsum * TUNNEL_GETSTATS - CONN_ID, (stats) * TUNNEL_GET - CONN_ID, (...) * SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec * SESSION_DELETE - SESSION_ID * SESSION_MODIFY - SESSION_ID, data_seq * SESSION_GET - SESSION_ID, (...) * SESSION_GETSTATS - SESSION_ID, (stats) * */ enum { L2TP_CMD_NOOP, L2TP_CMD_TUNNEL_CREATE, L2TP_CMD_TUNNEL_DELETE, L2TP_CMD_TUNNEL_MODIFY, L2TP_CMD_TUNNEL_GET, L2TP_CMD_SESSION_CREATE, L2TP_CMD_SESSION_DELETE, L2TP_CMD_SESSION_MODIFY, L2TP_CMD_SESSION_GET, __L2TP_CMD_MAX, }; #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1) /* * ATTR types defined for L2TP */ enum { L2TP_ATTR_NONE, /* no data */ L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */ L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */ L2TP_ATTR_OFFSET, /* u16 */ L2TP_ATTR_DATA_SEQ, /* u16 */ L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */ L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */ L2TP_ATTR_PROTO_VERSION, /* u8 */ L2TP_ATTR_IFNAME, /* string */ L2TP_ATTR_CONN_ID, /* u32 */ L2TP_ATTR_PEER_CONN_ID, /* u32 */ L2TP_ATTR_SESSION_ID, /* u32 */ L2TP_ATTR_PEER_SESSION_ID, /* u32 */ L2TP_ATTR_UDP_CSUM, /* u8 */ L2TP_ATTR_VLAN_ID, /* u16 */ L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */ L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */ L2TP_ATTR_DEBUG, /* u32 */ L2TP_ATTR_RECV_SEQ, /* u8 */ L2TP_ATTR_SEND_SEQ, /* u8 */ L2TP_ATTR_LNS_MODE, /* u8 */ L2TP_ATTR_USING_IPSEC, /* u8 */ L2TP_ATTR_RECV_TIMEOUT, /* msec */ L2TP_ATTR_FD, /* int */ L2TP_ATTR_IP_SADDR, /* u32 */ L2TP_ATTR_IP_DADDR, /* u32 */ L2TP_ATTR_UDP_SPORT, /* u16 */ L2TP_ATTR_UDP_DPORT, /* u16 */ L2TP_ATTR_MTU, /* u16 */ L2TP_ATTR_MRU, /* u16 */ L2TP_ATTR_STATS, /* nested */ __L2TP_ATTR_MAX, }; #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1) /* Nested in L2TP_ATTR_STATS */ enum { L2TP_ATTR_STATS_NONE, /* no data */ L2TP_ATTR_TX_PACKETS, /* u64 */ L2TP_ATTR_TX_BYTES, /* u64 */ L2TP_ATTR_TX_ERRORS, /* u64 */ L2TP_ATTR_RX_PACKETS, /* u64 */ L2TP_ATTR_RX_BYTES, /* u64 */ L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */ L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ L2TP_ATTR_RX_ERRORS, /* u64 */ __L2TP_ATTR_STATS_MAX, }; #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1) enum l2tp_pwtype { L2TP_PWTYPE_NONE = 0x0000, L2TP_PWTYPE_ETH_VLAN = 0x0004, L2TP_PWTYPE_ETH = 0x0005, L2TP_PWTYPE_PPP = 0x0007, L2TP_PWTYPE_PPP_AC = 0x0008, L2TP_PWTYPE_IP = 0x000b, __L2TP_PWTYPE_MAX }; enum l2tp_l2spec_type { L2TP_L2SPECTYPE_NONE, L2TP_L2SPECTYPE_DEFAULT, }; enum l2tp_encap_type { L2TP_ENCAPTYPE_UDP, L2TP_ENCAPTYPE_IP, }; enum l2tp_seqmode { L2TP_SEQ_NONE = 0, L2TP_SEQ_IP = 1, L2TP_SEQ_ALL = 2, }; /* * NETLINK_GENERIC related info */ #define L2TP_GENL_NAME "l2tp" #define L2TP_GENL_VERSION 0x1 #endif |