/usr/include/libnl3/netlink/netlink-kernel.h is in libnl-3-dev 3.2.27-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | #ifndef __NETLINK_KERNEL_H_
#define __NETLINK_KERNEL_H_
#if 0
/*
* FIXME: Goal is to preseve the documentation but make it simple
* to keep linux/netlink.h in sync. Maybe use named documentation
* sections.
*/
/**
* Netlink socket address
* @ingroup nl
*/
struct sockaddr_nl
{
/** socket family (AF_NETLINK) */
sa_family_t nl_family;
/** Padding (unused) */
unsigned short nl_pad;
/** Unique process ID */
uint32_t nl_pid;
/** Multicast group subscriptions */
uint32_t nl_groups;
};
/**
* @addtogroup msg
* @{
*/
/**
* Netlink message header
*/
struct nlmsghdr
{
/** Length of message including header and padding. */
uint32_t nlmsg_len;
/** Message type (content type) */
uint16_t nlmsg_type;
/** Message flags */
uint16_t nlmsg_flags;
/** Sequence number of message \see core_sk_seq_num. */
uint32_t nlmsg_seq;
/** Netlink port */
uint32_t nlmsg_pid;
};
/**
* @name Standard message flags
* @{
*/
/**
* Must be set on all request messages (typically from user space to
* kernel space).
*/
#define NLM_F_REQUEST 1
/**
* Indicates the message is part of a multipart message terminated
* by NLMSG_DONE.
*/
#define NLM_F_MULTI 2
/**
* Request for an acknowledgment on success.
*/
#define NLM_F_ACK 4
/**
* Echo this request
*/
#define NLM_F_ECHO 8
/** @} */
/**
* @name Additional message flags for GET requests
* @{
*/
/**
* Return the complete table instead of a single entry.
*/
#define NLM_F_ROOT 0x100
/**
* Return all entries matching criteria passed in message content.
*/
#define NLM_F_MATCH 0x200
/**
* Return an atomic snapshot of the table being referenced. This
* may require special privileges because it has the potential to
* interrupt service in the FE for a longer time.
*/
#define NLM_F_ATOMIC 0x400
/**
* Dump all entries
*/
#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
/** @} */
/**
* @name Additional messsage flags for NEW requests
* @{
*/
/**
* Replace existing matching config object with this request.
*/
#define NLM_F_REPLACE 0x100
/**
* Don't replace the config object if it already exists.
*/
#define NLM_F_EXCL 0x200
/**
* Create config object if it doesn't already exist.
*/
#define NLM_F_CREATE 0x400
/**
* Add to the end of the object list.
*/
#define NLM_F_APPEND 0x800
/** @} */
/**
* @name Standard Message types
* @{
*/
/**
* No operation, message must be ignored
*/
#define NLMSG_NOOP 0x1
/**
* The message signals an error and the payload contains a nlmsgerr
* structure. This can be looked at as a NACK and typically it is
* from FEC to CPC.
*/
#define NLMSG_ERROR 0x2
/**
* Message terminates a multipart message.
*/
#define NLMSG_DONE 0x3
/**
* The message signals that data got lost
*/
#define NLMSG_OVERRUN 0x4
/**
* Lower limit of reserved message types
*/
#define NLMSG_MIN_TYPE 0x10
/** @} */
/**
* Netlink error message header
*/
struct nlmsgerr
{
/** Error code (errno number) */
int error;
/** Original netlink message causing the error */
struct nlmsghdr msg;
};
struct nl_pktinfo
{
__u32 group;
};
/**
* Netlink alignment constant, all boundries within messages must be align to this.
*
* See \ref core_msg_fmt_align for more information on message alignment.
*/
#define NLMSG_ALIGNTO 4
/**
* Returns \p len properly aligned to NLMSG_ALIGNTO.
*
* See \ref core_msg_fmt_align for more information on message alignment.
*/
#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
/**
* Length of a netlink message header including padding.
*
* See \ref core_msg_fmt_align for more information on message alignment.
*/
#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
/** @} */
/**
* @addtogroup attr
* @{
*/
/*
*/
/**
* Netlink attribute structure
*
* @code
* <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
* +---------------------+- - -+- - - - - - - - - -+- - -+
* | Header | Pad | Payload | Pad |
* | (struct nlattr) | ing | | ing |
* +---------------------+- - -+- - - - - - - - - -+- - -+
* <-------------- nlattr->nla_len -------------->
* @endcode
*/
struct nlattr {
/**
* Attribute length in bytes including header
*/
__u16 nla_len;
/**
* Netlink attribute type
*/
__u16 nla_type;
};
/**
* @name Attribute Type Flags
*
* @code
* nla_type (16 bits)
* +---+---+-------------------------------+
* | N | O | Attribute Type |
* +---+---+-------------------------------+
* N := Carries nested attributes
* O := Payload stored in network byte order
* @endcode
*
* @note The N and O flag are mutually exclusive.
*
* @{
*/
/*
*/
#define NLA_F_NESTED (1 << 15)
#define NLA_F_NET_BYTEORDER (1 << 14)
#define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
/** @} */
#define NLA_ALIGNTO 4
/**
* Returns \p len properly aligned to NLA_ALIGNTO.
*
* See \ref core_msg_fmt_align for more information on message alignment.
*/
#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
/**
* Length of a netlink attribute header including padding.
*
* See \ref core_msg_fmt_align for more information on message alignment.
*/
#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
/** @} */
#endif
#endif /* __LINUX_NETLINK_H */
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