10d76751fSJames Chapman /* 20d76751fSJames Chapman * L2TP-over-IP socket for L2TPv3. 30d76751fSJames Chapman * 40d76751fSJames Chapman * Author: James Chapman <jchapman@katalix.com> 50d76751fSJames Chapman */ 60d76751fSJames Chapman 70d76751fSJames Chapman #ifndef _LINUX_L2TP_H_ 80d76751fSJames Chapman #define _LINUX_L2TP_H_ 90d76751fSJames Chapman 100d76751fSJames Chapman #include <linux/types.h> 110d76751fSJames Chapman #include <linux/socket.h> 12bcb949b8SBen Hutchings #ifdef __KERNEL__ 130d76751fSJames Chapman #include <linux/in.h> 14*a32e0eecSChris Elston #include <linux/in6.h> 15309795f4SJames Chapman #else 16309795f4SJames Chapman #include <netinet/in.h> 170d76751fSJames Chapman #endif 180d76751fSJames Chapman 190d76751fSJames Chapman #define IPPROTO_L2TP 115 200d76751fSJames Chapman 210d76751fSJames Chapman /** 220d76751fSJames Chapman * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets 230d76751fSJames Chapman * @l2tp_family: address family number AF_L2TPIP. 240d76751fSJames Chapman * @l2tp_addr: protocol specific address information 250d76751fSJames Chapman * @l2tp_conn_id: connection id of tunnel 260d76751fSJames Chapman */ 27309795f4SJames Chapman #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ 280d76751fSJames Chapman struct sockaddr_l2tpip { 290d76751fSJames Chapman /* The first fields must match struct sockaddr_in */ 30bcb949b8SBen Hutchings __kernel_sa_family_t l2tp_family; /* AF_INET */ 310d76751fSJames Chapman __be16 l2tp_unused; /* INET port number (unused) */ 320d76751fSJames Chapman struct in_addr l2tp_addr; /* Internet address */ 330d76751fSJames Chapman 340d76751fSJames Chapman __u32 l2tp_conn_id; /* Connection ID of tunnel */ 350d76751fSJames Chapman 360d76751fSJames Chapman /* Pad to size of `struct sockaddr'. */ 37bcb949b8SBen Hutchings unsigned char __pad[sizeof(struct sockaddr) - 38bcb949b8SBen Hutchings sizeof(__kernel_sa_family_t) - 390d76751fSJames Chapman sizeof(__be16) - sizeof(struct in_addr) - 400d76751fSJames Chapman sizeof(__u32)]; 410d76751fSJames Chapman }; 420d76751fSJames Chapman 43*a32e0eecSChris Elston /** 44*a32e0eecSChris Elston * struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets 45*a32e0eecSChris Elston * @l2tp_family: address family number AF_L2TPIP. 46*a32e0eecSChris Elston * @l2tp_addr: protocol specific address information 47*a32e0eecSChris Elston * @l2tp_conn_id: connection id of tunnel 48*a32e0eecSChris Elston */ 49*a32e0eecSChris Elston struct sockaddr_l2tpip6 { 50*a32e0eecSChris Elston /* The first fields must match struct sockaddr_in6 */ 51*a32e0eecSChris Elston __kernel_sa_family_t l2tp_family; /* AF_INET6 */ 52*a32e0eecSChris Elston __be16 l2tp_unused; /* INET port number (unused) */ 53*a32e0eecSChris Elston __be32 l2tp_flowinfo; /* IPv6 flow information */ 54*a32e0eecSChris Elston struct in6_addr l2tp_addr; /* IPv6 address */ 55*a32e0eecSChris Elston __u32 l2tp_scope_id; /* scope id (new in RFC2553) */ 56*a32e0eecSChris Elston __u32 l2tp_conn_id; /* Connection ID of tunnel */ 57*a32e0eecSChris Elston }; 58*a32e0eecSChris Elston 59309795f4SJames Chapman /***************************************************************************** 60309795f4SJames Chapman * NETLINK_GENERIC netlink family. 61309795f4SJames Chapman *****************************************************************************/ 62309795f4SJames Chapman 63309795f4SJames Chapman /* 64309795f4SJames Chapman * Commands. 65309795f4SJames Chapman * Valid TLVs of each command are:- 66309795f4SJames Chapman * TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid 67309795f4SJames Chapman * TUNNEL_DELETE - CONN_ID 68309795f4SJames Chapman * TUNNEL_MODIFY - CONN_ID, udpcsum 69309795f4SJames Chapman * TUNNEL_GETSTATS - CONN_ID, (stats) 70309795f4SJames Chapman * TUNNEL_GET - CONN_ID, (...) 71309795f4SJames Chapman * SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec 72309795f4SJames Chapman * SESSION_DELETE - SESSION_ID 73309795f4SJames Chapman * SESSION_MODIFY - SESSION_ID, data_seq 74309795f4SJames Chapman * SESSION_GET - SESSION_ID, (...) 75309795f4SJames Chapman * SESSION_GETSTATS - SESSION_ID, (stats) 76309795f4SJames Chapman * 77309795f4SJames Chapman */ 78309795f4SJames Chapman enum { 79309795f4SJames Chapman L2TP_CMD_NOOP, 80309795f4SJames Chapman L2TP_CMD_TUNNEL_CREATE, 81309795f4SJames Chapman L2TP_CMD_TUNNEL_DELETE, 82309795f4SJames Chapman L2TP_CMD_TUNNEL_MODIFY, 83309795f4SJames Chapman L2TP_CMD_TUNNEL_GET, 84309795f4SJames Chapman L2TP_CMD_SESSION_CREATE, 85309795f4SJames Chapman L2TP_CMD_SESSION_DELETE, 86309795f4SJames Chapman L2TP_CMD_SESSION_MODIFY, 87309795f4SJames Chapman L2TP_CMD_SESSION_GET, 88309795f4SJames Chapman __L2TP_CMD_MAX, 89309795f4SJames Chapman }; 90309795f4SJames Chapman 91309795f4SJames Chapman #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1) 92309795f4SJames Chapman 93309795f4SJames Chapman /* 94309795f4SJames Chapman * ATTR types defined for L2TP 95309795f4SJames Chapman */ 96309795f4SJames Chapman enum { 97309795f4SJames Chapman L2TP_ATTR_NONE, /* no data */ 98309795f4SJames Chapman L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */ 99309795f4SJames Chapman L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */ 100309795f4SJames Chapman L2TP_ATTR_OFFSET, /* u16 */ 101309795f4SJames Chapman L2TP_ATTR_DATA_SEQ, /* u16 */ 102309795f4SJames Chapman L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */ 103309795f4SJames Chapman L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */ 104309795f4SJames Chapman L2TP_ATTR_PROTO_VERSION, /* u8 */ 105309795f4SJames Chapman L2TP_ATTR_IFNAME, /* string */ 106309795f4SJames Chapman L2TP_ATTR_CONN_ID, /* u32 */ 107309795f4SJames Chapman L2TP_ATTR_PEER_CONN_ID, /* u32 */ 108309795f4SJames Chapman L2TP_ATTR_SESSION_ID, /* u32 */ 109309795f4SJames Chapman L2TP_ATTR_PEER_SESSION_ID, /* u32 */ 110309795f4SJames Chapman L2TP_ATTR_UDP_CSUM, /* u8 */ 111309795f4SJames Chapman L2TP_ATTR_VLAN_ID, /* u16 */ 112309795f4SJames Chapman L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */ 113309795f4SJames Chapman L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */ 114309795f4SJames Chapman L2TP_ATTR_DEBUG, /* u32 */ 115309795f4SJames Chapman L2TP_ATTR_RECV_SEQ, /* u8 */ 116309795f4SJames Chapman L2TP_ATTR_SEND_SEQ, /* u8 */ 117309795f4SJames Chapman L2TP_ATTR_LNS_MODE, /* u8 */ 118309795f4SJames Chapman L2TP_ATTR_USING_IPSEC, /* u8 */ 119309795f4SJames Chapman L2TP_ATTR_RECV_TIMEOUT, /* msec */ 120309795f4SJames Chapman L2TP_ATTR_FD, /* int */ 121309795f4SJames Chapman L2TP_ATTR_IP_SADDR, /* u32 */ 122309795f4SJames Chapman L2TP_ATTR_IP_DADDR, /* u32 */ 123309795f4SJames Chapman L2TP_ATTR_UDP_SPORT, /* u16 */ 124309795f4SJames Chapman L2TP_ATTR_UDP_DPORT, /* u16 */ 125309795f4SJames Chapman L2TP_ATTR_MTU, /* u16 */ 126309795f4SJames Chapman L2TP_ATTR_MRU, /* u16 */ 127309795f4SJames Chapman L2TP_ATTR_STATS, /* nested */ 128f9bac8dfSChris Elston L2TP_ATTR_IP6_SADDR, /* struct in6_addr */ 129f9bac8dfSChris Elston L2TP_ATTR_IP6_DADDR, /* struct in6_addr */ 130309795f4SJames Chapman __L2TP_ATTR_MAX, 131309795f4SJames Chapman }; 132309795f4SJames Chapman 133309795f4SJames Chapman #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1) 134309795f4SJames Chapman 135309795f4SJames Chapman /* Nested in L2TP_ATTR_STATS */ 136309795f4SJames Chapman enum { 137309795f4SJames Chapman L2TP_ATTR_STATS_NONE, /* no data */ 138309795f4SJames Chapman L2TP_ATTR_TX_PACKETS, /* u64 */ 139309795f4SJames Chapman L2TP_ATTR_TX_BYTES, /* u64 */ 140309795f4SJames Chapman L2TP_ATTR_TX_ERRORS, /* u64 */ 141309795f4SJames Chapman L2TP_ATTR_RX_PACKETS, /* u64 */ 142309795f4SJames Chapman L2TP_ATTR_RX_BYTES, /* u64 */ 143309795f4SJames Chapman L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */ 144309795f4SJames Chapman L2TP_ATTR_RX_OOS_PACKETS, /* u64 */ 145309795f4SJames Chapman L2TP_ATTR_RX_ERRORS, /* u64 */ 146309795f4SJames Chapman __L2TP_ATTR_STATS_MAX, 147309795f4SJames Chapman }; 148309795f4SJames Chapman 149309795f4SJames Chapman #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1) 150309795f4SJames Chapman 151309795f4SJames Chapman enum l2tp_pwtype { 152309795f4SJames Chapman L2TP_PWTYPE_NONE = 0x0000, 153309795f4SJames Chapman L2TP_PWTYPE_ETH_VLAN = 0x0004, 154309795f4SJames Chapman L2TP_PWTYPE_ETH = 0x0005, 155309795f4SJames Chapman L2TP_PWTYPE_PPP = 0x0007, 156309795f4SJames Chapman L2TP_PWTYPE_PPP_AC = 0x0008, 157309795f4SJames Chapman L2TP_PWTYPE_IP = 0x000b, 158309795f4SJames Chapman __L2TP_PWTYPE_MAX 159309795f4SJames Chapman }; 160309795f4SJames Chapman 161309795f4SJames Chapman enum l2tp_l2spec_type { 162309795f4SJames Chapman L2TP_L2SPECTYPE_NONE, 163309795f4SJames Chapman L2TP_L2SPECTYPE_DEFAULT, 164309795f4SJames Chapman }; 165309795f4SJames Chapman 166309795f4SJames Chapman enum l2tp_encap_type { 167309795f4SJames Chapman L2TP_ENCAPTYPE_UDP, 168309795f4SJames Chapman L2TP_ENCAPTYPE_IP, 169309795f4SJames Chapman }; 170309795f4SJames Chapman 171309795f4SJames Chapman enum l2tp_seqmode { 172309795f4SJames Chapman L2TP_SEQ_NONE = 0, 173309795f4SJames Chapman L2TP_SEQ_IP = 1, 174309795f4SJames Chapman L2TP_SEQ_ALL = 2, 175309795f4SJames Chapman }; 176309795f4SJames Chapman 177309795f4SJames Chapman /* 178309795f4SJames Chapman * NETLINK_GENERIC related info 179309795f4SJames Chapman */ 180309795f4SJames Chapman #define L2TP_GENL_NAME "l2tp" 181309795f4SJames Chapman #define L2TP_GENL_VERSION 0x1 182309795f4SJames Chapman 1830d76751fSJames Chapman #endif 184