struct sockaddr_nl {
__kernel_sa_family_t nl_family; /* AF_NETLINK */ unsignedshort nl_pad; /* zero */
__u32 nl_pid; /* port ID */
__u32 nl_groups; /* multicast groups mask */
};
struct nlmsghdr {
__u32 nlmsg_len; /* Length of message including header */
__u16 nlmsg_type; /* Message content */
__u16 nlmsg_flags; /* Additional flags */
__u32 nlmsg_seq; /* Sequence number */
__u32 nlmsg_pid; /* Sending process port ID */
};
/* Flags values */
#define NLM_F_REQUEST 0x01 /* It is request message. */ #define NLM_F_MULTI 0x02 /* Multipart message, terminated by NLMSG_DONE */ #define NLM_F_ACK 0x04 /* Reply with ack, with zero or error code */ #define NLM_F_ECHO 0x08 /* Echo this request */ #define NLM_F_DUMP_INTR 0x10 /* Dump was inconsistent due to sequence change */ #define NLM_F_DUMP_FILTERED 0x20 /* Dump was filtered as requested */
/* Modifiers to GET request */ #define NLM_F_ROOT 0x100 /* specify tree root */ #define NLM_F_MATCH 0x200 /* return all matching */ #define NLM_F_ATOMIC 0x400 /* atomic GET */ #define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
/* Modifiers to NEW request */ #define NLM_F_REPLACE 0x100 /* Override existing */ #define NLM_F_EXCL 0x200 /* Do not touch, if it exists */ #define NLM_F_CREATE 0x400 /* Create, if it does not exist */ #define NLM_F_APPEND 0x800 /* Add to end of list */
/* Modifiers to DELETE request */ #define NLM_F_NONREC 0x100 /* Do not delete recursively */
/* Flags for ACK message */ #define NLM_F_CAPPED 0x100 /* request was capped */ #define NLM_F_ACK_TLVS 0x200 /* extended ACK TVLs were included */
#define NLMSG_NOOP 0x1 /* Nothing. */ #define NLMSG_ERROR 0x2 /* Error */ #define NLMSG_DONE 0x3 /* End of a dump */ #define NLMSG_OVERRUN 0x4 /* Data lost */
#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */
struct nlmsgerr { int error; struct nlmsghdr msg; /* * followed by the message contents unless NETLINK_CAP_ACK was set * or the ACK indicates success (error == 0) * message length is aligned with NLMSG_ALIGN()
*/ /* * followed by TLVs defined in enum nlmsgerr_attrs * if NETLINK_EXT_ACK was set
*/
};
/** * enum nlmsgerr_attrs - nlmsgerr attributes * @NLMSGERR_ATTR_UNUSED: unused * @NLMSGERR_ATTR_MSG: error message string (string) * @NLMSGERR_ATTR_OFFS: offset of the invalid attribute in the original * message, counting from the beginning of the header (u32) * @NLMSGERR_ATTR_COOKIE: arbitrary subsystem specific cookie to * be used - in the success case - to identify a created * object or operation or similar (binary) * @__NLMSGERR_ATTR_MAX: number of attributes * @NLMSGERR_ATTR_MAX: highest attribute number
*/ enum nlmsgerr_attrs {
NLMSGERR_ATTR_UNUSED,
NLMSGERR_ATTR_MSG,
NLMSGERR_ATTR_OFFS,
NLMSGERR_ATTR_COOKIE,
/* * nla_type (16 bits) * +---+---+-------------------------------+ * | N | O | Attribute Type | * +---+---+-------------------------------+ * N := Carries nested attributes * O := Payload stored in network byte order * * 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)
/* Generic 32 bitflags attribute content sent to the kernel. * * The value is a bitmap that defines the values being set * The selector is a bitmask that defines which value is legit * * Examples: * value = 0x0, and selector = 0x1 * implies we are selecting bit 1 and we want to set its value to 0. * * value = 0x2, and selector = 0x2 * implies we are selecting bit 2 and we want to set its value to 1. *
*/ struct nla_bitfield32 {
__u32 value;
__u32 selector;
};
#endif/* _UAPI__LINUX_NETLINK_H */
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