Annotation of embedaddon/strongswan/src/include/linux/netlink.h, revision 1.1.1.1
1.1 misho 1: #ifndef _UAPI__LINUX_NETLINK_H
2: #define _UAPI__LINUX_NETLINK_H
3:
4: #include <linux/kernel.h>
5: #include <linux/socket.h> /* for __kernel_sa_family_t */
6: #include <linux/types.h>
7:
8: #define NETLINK_ROUTE 0 /* Routing/device hook */
9: #define NETLINK_UNUSED 1 /* Unused number */
10: #define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
11: #define NETLINK_FIREWALL 3 /* Unused number, formerly ip_queue */
12: #define NETLINK_SOCK_DIAG 4 /* socket monitoring */
13: #define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
14: #define NETLINK_XFRM 6 /* ipsec */
15: #define NETLINK_SELINUX 7 /* SELinux event notifications */
16: #define NETLINK_ISCSI 8 /* Open-iSCSI */
17: #define NETLINK_AUDIT 9 /* auditing */
18: #define NETLINK_FIB_LOOKUP 10
19: #define NETLINK_CONNECTOR 11
20: #define NETLINK_NETFILTER 12 /* netfilter subsystem */
21: #define NETLINK_IP6_FW 13
22: #define NETLINK_DNRTMSG 14 /* DECnet routing messages */
23: #define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */
24: #define NETLINK_GENERIC 16
25: /* leave room for NETLINK_DM (DM Events) */
26: #define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */
27: #define NETLINK_ECRYPTFS 19
28: #define NETLINK_RDMA 20
29: #define NETLINK_CRYPTO 21 /* Crypto layer */
30:
31: #define NETLINK_INET_DIAG NETLINK_SOCK_DIAG
32:
33: #define MAX_LINKS 32
34:
35: struct sockaddr_nl {
36: __kernel_sa_family_t nl_family; /* AF_NETLINK */
37: unsigned short nl_pad; /* zero */
38: __u32 nl_pid; /* port ID */
39: __u32 nl_groups; /* multicast groups mask */
40: };
41:
42: struct nlmsghdr {
43: __u32 nlmsg_len; /* Length of message including header */
44: __u16 nlmsg_type; /* Message content */
45: __u16 nlmsg_flags; /* Additional flags */
46: __u32 nlmsg_seq; /* Sequence number */
47: __u32 nlmsg_pid; /* Sending process port ID */
48: };
49:
50: /* Flags values */
51:
52: #define NLM_F_REQUEST 1 /* It is request message. */
53: #define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */
54: #define NLM_F_ACK 4 /* Reply with ack, with zero or error code */
55: #define NLM_F_ECHO 8 /* Echo this request */
56: #define NLM_F_DUMP_INTR 16 /* Dump was inconsistent due to sequence change */
57:
58: /* Modifiers to GET request */
59: #define NLM_F_ROOT 0x100 /* specify tree root */
60: #define NLM_F_MATCH 0x200 /* return all matching */
61: #define NLM_F_ATOMIC 0x400 /* atomic GET */
62: #define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
63:
64: /* Modifiers to NEW request */
65: #define NLM_F_REPLACE 0x100 /* Override existing */
66: #define NLM_F_EXCL 0x200 /* Do not touch, if it exists */
67: #define NLM_F_CREATE 0x400 /* Create, if it does not exist */
68: #define NLM_F_APPEND 0x800 /* Add to end of list */
69:
70: /*
71: 4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL
72: 4.4BSD CHANGE NLM_F_REPLACE
73:
74: True CHANGE NLM_F_CREATE|NLM_F_REPLACE
75: Append NLM_F_CREATE
76: Check NLM_F_EXCL
77: */
78:
79: #define NLMSG_ALIGNTO 4U
80: #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
81: #define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
82: #define NLMSG_LENGTH(len) ((len) + NLMSG_HDRLEN)
83: #define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
84: #define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
85: #define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
86: (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
87: #define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
88: (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
89: (nlh)->nlmsg_len <= (len))
90: #define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
91:
92: #define NLMSG_NOOP 0x1 /* Nothing. */
93: #define NLMSG_ERROR 0x2 /* Error */
94: #define NLMSG_DONE 0x3 /* End of a dump */
95: #define NLMSG_OVERRUN 0x4 /* Data lost */
96:
97: #define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */
98:
99: struct nlmsgerr {
100: int error;
101: struct nlmsghdr msg;
102: };
103:
104: #define NETLINK_ADD_MEMBERSHIP 1
105: #define NETLINK_DROP_MEMBERSHIP 2
106: #define NETLINK_PKTINFO 3
107: #define NETLINK_BROADCAST_ERROR 4
108: #define NETLINK_NO_ENOBUFS 5
109: #define NETLINK_RX_RING 6
110: #define NETLINK_TX_RING 7
111: #define NETLINK_LISTEN_ALL_NSID 8
112: #define NETLINK_LIST_MEMBERSHIPS 9
113:
114: struct nl_pktinfo {
115: __u32 group;
116: };
117:
118: struct nl_mmap_req {
119: unsigned int nm_block_size;
120: unsigned int nm_block_nr;
121: unsigned int nm_frame_size;
122: unsigned int nm_frame_nr;
123: };
124:
125: struct nl_mmap_hdr {
126: unsigned int nm_status;
127: unsigned int nm_len;
128: __u32 nm_group;
129: /* credentials */
130: __u32 nm_pid;
131: __u32 nm_uid;
132: __u32 nm_gid;
133: };
134:
135: enum nl_mmap_status {
136: NL_MMAP_STATUS_UNUSED,
137: NL_MMAP_STATUS_RESERVED,
138: NL_MMAP_STATUS_VALID,
139: NL_MMAP_STATUS_COPY,
140: NL_MMAP_STATUS_SKIP,
141: };
142:
143: #define NL_MMAP_MSG_ALIGNMENT NLMSG_ALIGNTO
144: #define NL_MMAP_MSG_ALIGN(sz) __ALIGN_KERNEL(sz, NL_MMAP_MSG_ALIGNMENT)
145: #define NL_MMAP_HDRLEN NL_MMAP_MSG_ALIGN(sizeof(struct nl_mmap_hdr))
146:
147: #define NET_MAJOR 36 /* Major 36 is reserved for networking */
148:
149: enum {
150: NETLINK_UNCONNECTED = 0,
151: NETLINK_CONNECTED,
152: };
153:
154: /*
155: * <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
156: * +---------------------+- - -+- - - - - - - - - -+- - -+
157: * | Header | Pad | Payload | Pad |
158: * | (struct nlattr) | ing | | ing |
159: * +---------------------+- - -+- - - - - - - - - -+- - -+
160: * <-------------- nlattr->nla_len -------------->
161: */
162:
163: struct nlattr {
164: __u16 nla_len;
165: __u16 nla_type;
166: };
167:
168: /*
169: * nla_type (16 bits)
170: * +---+---+-------------------------------+
171: * | N | O | Attribute Type |
172: * +---+---+-------------------------------+
173: * N := Carries nested attributes
174: * O := Payload stored in network byte order
175: *
176: * Note: The N and O flag are mutually exclusive.
177: */
178: #define NLA_F_NESTED (1 << 15)
179: #define NLA_F_NET_BYTEORDER (1 << 14)
180: #define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
181:
182: #define NLA_ALIGNTO 4
183: #define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
184: #define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
185:
186:
187: #endif /* _UAPI__LINUX_NETLINK_H */
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