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Copyright 2018, Joyent, Inc.
Copyright 2024 Oxide Computer Company
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pf_key - Security association database interface

#include <sys/types.h>
#include <sys/socket.h>
#include <net/pfkeyv2.h>



int socket(PF_KEY,SOCK_RAW,PF_KEY_V2);

Keying information for IPsec security services is maintained in security association databases (SADBs). The security associations (SAs) are used to protect both inbound and outbound packets.

A user process (or possibly multiple co-operating processes) maintains SADBs by sending messages over a special kind of socket. This is analogous to the method described in route(4P). Only a superuser may access an SADB.

Applications that use PF_KEY include ipseckey(8), in.iked(8) and tcpkey(8).

The operating system may spontaneously send pf_key messages to listening processes, such as a request for a new SA for an outbound datagram or to report the expiration of an existing SA.

One opens the channel for passing SADB control messages by using the socket call shown in the section above. More than one key socket can be open per system.

Messages are formed by a small base header, followed by zero or more extension messages, some of which require additional data following them. The base message and all extensions must be eight-byte aligned. An example message is the GET message, which requires the base header, the SA extension, and the ADDRESS_DST extension.

Messages include:

#define SADB_GETSPI /* Get a new SPI value from the system. */
#define SADB_UPDATE /* Update an SA. */
#define SADB_ADD /* Add a fully-formed SA. */
#define SADB_DELETE /* Delete an SA. */
#define SADB_GET /* Get an SA */
#define SADB_ACQUIRE /* Kernel needs a new SA. */
#define SADB_REGISTER /* Regis. to receive ACQUIRE msgs. */
#define SADB_EXPIRE /* SA has expired. */
#define SADB_FLUSH /* Flush all SAs. */
#define SADB_DUMP /* Get all SAs. (Unreliable) */
#define SADB_X_PROMISC /* Listen promiscuously */
#define SADB_X_INVERSE_ACQUIRE /* Query kernel policy,
 get an ACQUIRE in return. */
#define SADB_X_UPDATEPAIR /* Update an SA and its pair SA */
#define SADB_X_DELPAIR /* Delete an SA pair. */

The base message header consists of:

struct sadb_msg {
 uint8_t sadb_msg_version; /* Set to PF_KEY_V2, for compat. */
 uint8_t sadb_msg_type; /* Msg. type */
 uint8_t sadb_msg_errno; /* Why message failed */
 uint8_t sadb_msg_satype; /* Which security service */
 uint16_t sadb_msg_len; /* Length in 8-byte units */
 uint16_t sadb_msg_reserved; /* Zero out */
 #define sadb_x_msg_diagnostic sadb_msg_reserved
 /* Extended diagnostics for errors */
 uint32_t sadb_msg_seq; /* For msg. originator */
 uint32_t sadb_msg_pid; /* ID originator */
};

Extension types include:

#define SADB_EXT_SA /* SA info */
#define SADB_EXT_LIFETIME_HARD /* Hard lifetime */
#define SADB_EXT_LIFETIME_SOFT /* Soft lifetime */
#define SADB_EXT_ADDRESS_SRC /* Source address */
#define SADB_EXT_ADDRESS_DST /* Destination address */
#define SADB_EXT_ADDRESS_PROXY /* Proxy address - DEPRECATED */
#define SADB_EXT_KEY_AUTH /* Authen. key */
#define SADB_EXT_KEY_ENCRYPT /* Encryption key */
#define SADB_EXT_IDENTITY_SRC /* Source certif. ID */
#define SADB_EXT_IDENTITY_DST /* Destination certif. ID */
#define SADB_EXT_SENSITIVITY /* Sensitivity info */
#define SADB_EXT_PROPOSAL /* Security proposal */
#define SADB_EXT_SUPPORTED_AUTH /* Supported authen. algo's */
#define SADB_EXT_SUPPORTED_ENCRYPT /* Supported encryption algo's */
#define SADB_EXT_SPIRANGE /* Range of possible SPIs *
#define SADB_X_EXT_EREG /* Reg. for extended ACQUIRE */
#define SADB_X_EXT_EPROP /* Extended ACQUIRE proposals */
#define SADB_X_EXT_KM_COOKIE /* Indicates which KM derived SA. */
#define SADB_X_EXT_ADDRESS_NATT_LOC /* NAT-Traversal local (my public) */
#define SADB_X_EXT_ADDRESS_NATT_REM /* NAT-T remote (peer's private) */
#define SADB_X_EXT_ADDRESS_INNER_SRC /* Tunnel-mode inner source */
#define SADB_X_EXT_ADDRESS_INNER_DST /* Tunnel-mode inner dest */
#define SADB_X_EXT_PAIR /* SA pair extension.

Security Association Information Extension flags:

#define SADB_SAFLAGS_PFS 0x1 /* Perfect forward secrecy? */
#define SADB_SAFLAGS_NOREPLAY 0x2 /* Replay field NOT PRESENT. */
#define SADB_X_SAFLAGS_USED 0x80000000 /* SA used/not used */
#define SADB_X_SAFLAGS_UNIQUE 0x40000000 /* SA unique/reusable */
#define SADB_X_SAFLAGS_AALG1 0x20000000 /* Auth-alg specif. flag 1 */
#define SADB_X_SAFLAGS_AALG2 0x10000000 /* Auth-alg specif. flag 2 */
#define SADB_X_SAFLAGS_EALG1 0x8000000 /* Encr-alg specif. flag 1 */
#define SADB_X_SAFLAGS_EALG2 0x4000000 /* Encr-alg specif. flag 2 */
#define SADB_X_SAFLAGS_KM1 0x2000000 /* Key mgmt. specif. flag 1 */
#define SADB_X_SAFLAGS_KM2 0x1000000 /* Key mgmt. specif. flag 2 */
#define SADB_X_SAFLAGS_KM3 0x800000 /* Key mgmt. specif. flag 3 */
#define SADB_X_SAFLAGS_KM4 0x400000 /* Key mgmt. specif. flag 4 */
#define SADB_X_SAFLAGS_KRES1 0x200000 /* Reserved by the kernel */
#define SADB_X_SAFLAGS_NATT_LOC 0x100000 /* this has a natted srcSA */
#define SADB_X_SAFLAGS_NATT_REM 0x80000 /* this has a natted dstSA */
#define SADB_X_SAFLAGS_KRES2 0x40000 /* Reserved by the kernel */
#define SADB_X_SAFLAGS_TUNNEL 0x20000 /* tunnel mode */
#define SADB_X_SAFLAGS_PAIRED 0x10000 /* inbound/outbound pair*/
#define SADB_X_SAFLAGS_OUTBOUND 0x8000 /* SA direction bit */
#define SADB_X_SAFLAGS_INBOUND 0x4000 /* SA direction bit */
#define SADB_X_SAFLAGS_TCPSIG 0x2000 /* SA is for a TCP signature */
#define SADB_X_SAFLAGS_NATTED 0x1000 /* Local node is behind a NAT */

Extension headers include:

struct sadb_ext {
 uint16_t sadb_ext_len; /* In 64-bit words, inclusive */
 uint16_t sadb_ext_type; /* 0 is reserved */
};

struct sadb_sa {
 uint16_t sadb_sa_len;
 uint16_t sadb_sa_exttype; /* ASSOCIATION */
 uint32_t sadb_sa_spi;
 uint8_t sadb_sa_replay;
 uint8_t sadb_sa_state;
 uint8_t sadb_sa_auth;
 uint8_t sadb_sa_encrypt;
 uint32_t sadb_sa_flags;
};

struct sadb_lifetime {
 uint16_t sadb_lifetime_len;
 uint16_t sadb_lifetime_exttype; /* SOFT, HARD, CURRENT */
 uint32_t sadb_lifetime_allocations;
 uint64_t sadb_lifetime_bytes;
 uint64_t sadb_lifetime_addtime;
 uint64_t sadb_lifetime_usetime;
};

struct sadb_address {
 uint16_t sadb_address_len;
 uint16_t sadb_address_exttype; /* SRC, DST, NATT_*, INNER_* */
 uint8_t sadb_address_proto; /* Proto for ports... */
 uint8_t sadb_address_prefixlen; /* Prefix length for INNER_*. */
 uint16_t sadb_address_reserved; /* Padding */
 /* Followed by a sockaddr
 structure.*/
};

struct sadb_key {
 uint16_t sadb_key_len;
 uint16_t sadb_key_exttype; /* AUTH, ENCRYPT */
 uint16_t sadb_key_bits;
 uint16_t sadb_key_reserved;
 /* Followed by actual key(s) in
 canonical (outbound proc.) order. */
};

struct sadb_ident {
 uint16_t sadb_ident_len;
 uint16_t sadb_ident_exttype; /* SRC, DST, PROXY */
 uint16_t sadb_ident_type; /* FQDN, USER_FQDN, etc. */
 uint16_t sadb_ident_reserved; /* Padding */
 uint64_t sadb_ident_id; /* For userid, etc. */
 /* Followed by an identity null-terminate C string if present. */
};

struct sadb_sens {
 uint16_t sadb_sens_len;
 uint16_t sadb_sens_exttype; /* SENSITIVITY */
 uint32_t sadb_sens_dpd;
 uint8_t sadb_sens_sens_level;
 uint8_t sadb_sens_sens_len; /* 64-bit words */
 uint8_t sadb_sens_integ_level;
 uint8_t sadb_sens_integ_len; /* 64-bit words */
 uint32_t sadb_sens_reserved;
 /*
 * followed by two uint64_t arrays
 * uint64_t sadb_sens_bitmap[sens_bitmap_len];
 * uint64_t integ_bitmap[integ_bitmap_len];
 */
};

struct sadb_prop {
 uint16_t sadb_prop_len;
 uint16_t sadb_prop_exttype; /* PROPOSAL, X_EPROP */
 uint8_t sadb_prop_replay;
 uint8_t sadb_X_prop_ereserved;
 uint16_t sadb_x_prop_numecombs;
/* Followed by sadb_comb[] array or sadb_ecomb[] array. */
};

struct sadb_comb {
 uint8_t sadb_comb_auth;
 uint8_t sadb_comb_encrypt;
 uint16_t sadb_comb_flags;
 uint16_t sadb_comb_auth_minbits;
 uint16_t sadb_comb_auth_maxbits;
 uint16_t sadb_comb_encrypt_minbits;
 uint16_t sadb_comb_encrypt_maxbits;
 uint8_t sadb_x_comb_encrypt_saltbits;
 uint8_t sadb_x_comb_reserved;
 uint16_t sadb_comb_reserved;
 uint32_t sadb_comb_soft_allocations;
 uint32_t sadb_comb_hard_allocations;
 uint64_t sadb_comb_soft_bytes;
 uint64_t sadb_comb_hard_bytes;
 uint64_t sadb_comb_soft_addtime;
 uint64_t sadb_comb_hard_addtime;
 uint64_t sadb_comb_soft_usetime;
 uint64_t sadb_comb_hard_usetime;
};

struct sadb_x_ecomb {
 uint8_t sadb_x_ecomb_numalgs;
 uint8_t sadb_x_ecomb_reserved;
 uint16_t sadb_x_ecomb_flags; /* E.g. PFS? */
 uint32_t sadb_x_ecomb_reserved2;
 uint32_t sadb_x_ecomb_soft_allocations;
 uint32_t sadb_x_ecomb_hard_allocations;
 uint64_t sadb_x_ecomb_soft_bytes;
 uint64_t sadb_x_ecomb_hard_bytes;
 uint64_t sadb_x_ecomb_soft_addtime;
 uint64_t sadb_x_ecomb_hard_addtime;
 uint64_t sadb_x_ecomb_soft_usetime;
 uint64_t sadb_x_ecomb_hard_usetime;
};

struct sadb_x_algdesc {
 uint8_t sadb_x_algdesc_satype; /* ESP, AH, etc. */
 uint8_t sadb_x_algdesc_algtype; /* AUTH, CRYPT, COMPRESS */
 uint8_t sadb_x_algdesc_alg; /* DES, 3DES, MD5, etc. */
 uint8_t sadb_x_algdesc_saltbits;
 uint16_t sadb_x_algdesc_minbits; /* Bit strengths. */
 uint16_t sadb_x_algdesc_maxbits;
 };

struct sadb_x_ereg {
 uint16_t sadb_x_ereg_len;
 uint16_t sadb_x_ereg_exttype; /* X_EREG */
 uint8_t sadb_x_ereg_satypes[4]; /* Array of SA types, 0-terminated.
|};

struct sadb_x_kmc {
 uint16_t sadb_x_kmc_len;
 uint16_t sadb_x_kmc_exttype; /* X_KM_COOKIE */
 uint32_t sadb_x_kmc_proto; /* KM protocol */
 uint32_t sadb_x_kmc_cookie; /* KMP-specific */
 uint32_t sadb_x_kmc_reserved; /* Reserved; must be zero */
 };

struct sadb_supported {
 uint16_t sadb_supported_len;
 uint16_t sadb_supported_exttype;
 uint32_t sadb_supported_reserved;
};

struct sadb_alg {
 uint8_t sadb_alg_id; /* Algorithm type. */
 uint8_t sadb_alg_ivlen; /* IV len, in bits */
 uint16_t sadb_alg_minbits; /* Min. key len (in bits) */
 uint16_t sadb_alg_maxbits; /* Max. key length */
 uint16_t sadb_alg_reserved;
};

struct sadb_spirange {
 uint16_t sadb_spirange_len;
 uint16_t sadb_spirange_exttype; /* SPI_RANGE */
 uint32_t sadb_spirange_min
 uint32_t sadb_spirange_max;
 uint32_t sadb_spirange_reserved;
};

struct sadb_x_pair {
 uint16_t sadb_x_pair_len;
 uint16_t sadb_x_pair_exttype; /* SADB_X_EXT_PAIR */
 uint32_t sadb_x_pair_spi; /* SPI of paired SA */
};

Each message has a behavior. A behavior is defined as where the initial message travels, for example, user to kernel, and what subsequent actions are expected to take place. Contents of messages are illustrated as:

<base, REQUIRED EXTENSION, REQ., (OPTIONAL EXTENSION,) (OPT)>

The SA extension is sometimes used only for its SPI field. If all other fields must be ignored, this is represented by SA(*).

The lifetime extensions are represented with one to three letters after the word lifetime, representing (H)ARD, (S)OFT, and (C)URRENT.

The address extensions are represented with one to three letters after the word "address," representing (S)RC, (D)ST, (Nl)NAT-T local, (Nr)NAT-T remote, (Is)Inner source, and (Id)Inner destination.

Source and destination address extensions reflect outer-header selectors for an IPsec SA. An SA is inbound or outbound depending on which of the source or destination address is local to the node. Inner-source and inner-destination selectors represent inner-header selectors for Tunnel Mode SAs. A Tunnel Mode SA must have either IPPROTO_ENCAP or IPPROTO_IPV6 in its outer-headers as protocol selector, in addition to filled-in Inner-address extensions.

NAT-T local and NAT-T remote addresses store local and remote ports used for ESP-in-UDP encapsulation. A non-zero local NAT-T address extension represents the local node's external IP address if it is not equivalent to the SA's local address. A non-zero remote NAT-T address represents a peer's behind-a-NAT address if it is not equivalent to the SA's remote address. An SA with NAT-T extensions will protect-and-transmit outbound traffic. Processing of inbound NAT-T traffic requires a UDP socket bound to the appropriate local port and it must have the UDP_NAT_T_ENDPOINT (see udp(4P)) socket option enabled.

Note that when an error occurs, only the base header is sent. In the event of an error, an extended diagnostic may be set (see DIAGNOSTICS). Typical errors include: EINVAL

ENOMEM ENSGSIZ EEXIST ESRCH

The following are examples of message use and behavior:

Send a SADB_GETSPI message from a user process to the kernel.

<base, address, SPI range>

The kernel returns the SADB_GETSPI message to all listening processes.

<base, SA(*), address (SD)>

Send a SADB_UPDATE message from a user process to the kernel.

<base, SA, (lifetime(HS),) address(SD), (address(Is,Id),
 address(Nl,Nr), key (AE), (identity(SD),) (sensitivity)>

The kernel returns the SADB_UPDATE message to all listening processes.

<base, SA(*), address (SD), (pair)>

Adding a sadb_x_pair extension to an SADB_UPDATE or SADB_ADD message will update the security association pair linkage with the SPI of the security association contained in that extension. The resulting security association "pair" can be updated or as a single entity using the SADB_X_UPDATEPAIR or SADB_X_DELPAIR message types.

Send a SADB_ADD message from a user process to the kernel.

<base, SA, (lifetime(HS),) address(SD), (address(Is,Id),)
 (address(Nl,Nr),) key (AE), (identity(SD),) (sensitivity) (pair)>

The kernel returns the SADB_ADD message to all listening processes.

<base, SA, (lifetime(HS),) address (SD), (address(Is,Id),)
 (address(Nl,Nr),) (identity (SD),) (sensitivity)>

Send a SADB_X_UPDATEPAIR message from a user process to the kernel. This message type is used to update the lifetime values of a security association and the lifetime values of the security association it is paired with.

<base, SA, lifetime(HS), address(SD)>

Send a SADB_DELETE message from a user process to the kernel. The SADB_X_DELPAIR message type will request deletion of the security association and the security association it is paired with.

<base, SA (*), address (SD)>

The kernel returns the SADB_DELETE message to all listening processes.

<base, SA (*), address (SD)>

Send a SADB_GET message from a user process to the kernel.

<base, SA (*), address (SD)>

The kernel returns the SADB_GET message to the socket that sent the SADB_GET message.

<base, SA , (lifetime (HSC),) address SD), (address (P),) key (AE),
 (identity (SD),) (sensitivity)>

The kernel sends a SADB_ACQUIRE message to registered sockets. Note that any GETSPI, ADD, or UPDATE calls in reaction to an ACQUIRE must fill in the sadb_msg_seq of those messages with the one in the ACQUIRE message. The address (SD) extensions must have the port fields filled in with the port numbers of the session requiring keys if appropriate.

<base, address (SD), (address(Is,Id)), (identity(SD),)
 (sensitivity,) proposal>

Extended ACQUIRE will have a slightly different format. The sadb_msg_satype field is 0, and the extension contains the desired combination(s) of security protocols.

<base, address (SD), (address(Is,Id)), (identity(SD),)
 (sensitivity,) eprop>

If key management fails, send an SADB_ACQUIRE to indicate failure.

<base>

For inbound Key Management processing, a Key Management application may wish to consult the kernel for its policy. The application should send to the kernel:

<base, address (SD), (address(Is,Id))>

The kernel returns a message similar to a kernel-generated extended ACQUIRE:

<base, address (SD), (address(Is,Id)), (identity(SD),)
 (sensitivity,) eprop>

Send a SADB_REGISTER message from a user process to the kernel.

<base>

The kernel returns the SADB_REGISTER message to registered sockets, with algorithm types supported by the kernel being indicated in the supported algorithms field. Note that this message may arrive asynchronously due to an algorithm being loaded or unloaded into a dynamically linked kernel.

<base, supported>

There is also the extended REGISTER, which will allow this process to receive extended ACQUIREs.

<base, ereg>

Which returns a series of SADB_REGISTER replies (one for each security protocol registered) from the kernel.

The kernel sends a SADB_EXPIRE message to all listeners when the soft limit of a security association has been expired.

<base, SA, lifetime (C and one of HS), address (SD)>

Send a SADB_FLUSH message from a user process to the kernel.

<base>

The kernel returns the SADB_FLUSH message to all listening sockets.

<base>

Send a SADB_DUMP message from a user process to the kernel.

<base>

Several SADB_DUMP messages will return from the kernel to the sending socket.

<base, SA, (lifetime (HSC),) address (SD), (address (Is,Id),)
 (address (Nl,Nr),) key (AE), (identity (SD),) sensitivity)>

To mark the end of a dump a single base header arrives with its sadb_mdg_seq set to 0.

<base>

Send a SADB_X_PROMISC message from a user process to the kernel.

<base>

The kernel returns the SADB_X_PROMISC message to all listening processes.

<base>

The message returning from the kernel will contain a diagnostic value in the base message header, the diagnostic value will indicate if action requested by the original message was a success.

Diagnostic Values:

#define SADB_X_DIAGNOSTIC_NONE 0
#define SADB_X_DIAGNOSTIC_UNKNOWN_MSG 1
#define SADB_X_DIAGNOSTIC_UNKNOWN_EXT 2
#define SADB_X_DIAGNOSTIC_BAD_EXTLEN 3
#define SADB_X_DIAGNOSTIC_UNKNOWN_SATYPE 4
#define SADB_X_DIAGNOSTIC_SATYPE_NEEDED 5
#define SADB_X_DIAGNOSTIC_NO_SADBS 6
#define SADB_X_DIAGNOSTIC_NO_EXT 7
 /* Bad address family value */
#define SADB_X_DIAGNOSTIC_BAD_SRC_AF 8
 /* in sockaddr->sa_family. */
#define SADB_X_DIAGNOSTIC_BAD_DST_AF 9
 /* These two are synonyms. */
#define SADB_X_DIAGNOSTIC_BAD_PROXY_AF 10
#define SADB_X_DIAGNOSTIC_BAD_INNER_SRC_AF 10

#define SADB_X_DIAGNOSTIC_AF_MISMATCH 11

#define SADB_X_DIAGNOSTIC_BAD_SRC 12
#define SADB_X_DIAGNOSTIC_BAD_DST 13

#define SADB_X_DIAGNOSTIC_ALLOC_HSERR 14
#define SADB_X_DIAGNOSTIC_BYTES_HSERR 15
#define SADB_X_DIAGNOSTIC_ADDTIME_HSERR 16
#define SADB_X_DIAGNOSTIC_USETIME_HSERR 17

#define SADB_X_DIAGNOSTIC_MISSING_SRC 18
#define SADB_X_DIAGNOSTIC_MISSING_DST 19
#define SADB_X_DIAGNOSTIC_MISSING_SA 20
#define SADB_X_DIAGNOSTIC_MISSING_EKEY 21
#define SADB_X_DIAGNOSTIC_MISSING_AKEY 22
#define SADB_X_DIAGNOSTIC_MISSING_RANGE 23

#define SADB_X_DIAGNOSTIC_DUPLICATE_SRC 24
#define SADB_X_DIAGNOSTIC_DUPLICATE_DST 25
#define SADB_X_DIAGNOSTIC_DUPLICATE_SA 26
#define SADB_X_DIAGNOSTIC_DUPLICATE_EKEY 27
#define SADB_X_DIAGNOSTIC_DUPLICATE_AKEY 28
#define SADB_X_DIAGNOSTIC_DUPLICATE_RANGE 29

#define SADB_X_DIAGNOSTIC_MALFORMED_SRC 30
#define SADB_X_DIAGNOSTIC_MALFORMED_DST 31
#define SADB_X_DIAGNOSTIC_MALFORMED_SA 32
#define SADB_X_DIAGNOSTIC_MALFORMED_EKEY 33
#define SADB_X_DIAGNOSTIC_MALFORMED_AKEY 34
#define SADB_X_DIAGNOSTIC_MALFORMED_RANGE 35

#define SADB_X_DIAGNOSTIC_AKEY_PRESENT 36
#define SADB_X_DIAGNOSTIC_EKEY_PRESENT 37
#define SADB_X_DIAGNOSTIC_PROP_PRESENT 38
#define SADB_X_DIAGNOSTIC_SUPP_PRESENT 39
#define SADB_X_DIAGNOSTIC_BAD_AALG 40
#define SADB_X_DIAGNOSTIC_BAD_EALG 41
#define SADB_X_DIAGNOSTIC_BAD_SAFLAGS 42
#define SADB_X_DIAGNOSTIC_BAD_SASTATE 43

#define SADB_X_DIAGNOSTIC_BAD_AKEYBITS 44
#define SADB_X_DIAGNOSTIC_BAD_EKEYBITS 45

#define SADB_X_DIAGNOSTIC_ENCR_NOTSUPP 46

#define SADB_X_DIAGNOSTIC_WEAK_EKEY 47
#define SADB_X_DIAGNOSTIC_WEAK_AKEY 48

#define SADB_X_DIAGNOSTIC_DUPLICATE_KMP 49
#define SADB_X_DIAGNOSTIC_DUPLICATE_KMC 50

#define SADB_X_DIAGNOSTIC_MISSING_NATT_LOC 51
#define SADB_X_DIAGNOSTIC_MISSING_NATT_REM 52
#define SADB_X_DIAGNOSTIC_DUPLICATE_NATT_LOC 53
#define SADB_X_DIAGNOSTIC_DUPLICATE_NATT_REM 54
#define SADB_X_DIAGNOSTIC_MALFORMED_NATT_LOC 55
#define SADB_X_DIAGNOSTIC_MALFORMED_NATT_REM 56
#define SADB_X_DIAGNOSTIC_DUPLICATE_NATT_PORTS 57

#define SADB_X_DIAGNOSTIC_MISSING_INNER_SRC 58
#define SADB_X_DIAGNOSTIC_MISSING_INNER_DST 59
#define SADB_X_DIAGNOSTIC_DUPLICATE_INNER_SRC 60
#define SADB_X_DIAGNOSTIC_DUPLICATE_INNER_DST 61
#define SADB_X_DIAGNOSTIC_MALFORMED_INNER_SRC 62
#define SADB_X_DIAGNOSTIC_MALFORMED_INNER_DST 63

#define SADB_X_DIAGNOSTIC_PREFIX_INNER_SRC 64
#define SADB_X_DIAGNOSTIC_PREFIX_INNER_DST 65
#define SADB_X_DIAGNOSTIC_BAD_INNER_DST_AF 66
#define SADB_X_DIAGNOSTIC_INNER_AF_MISMATCH 67

#define SADB_X_DIAGNOSTIC_BAD_NATT_REM_AF 68
#define SADB_X_DIAGNOSTIC_BAD_NATT_LOC_AF 69

#define SADB_X_DIAGNOSTIC_PROTO_MISMATCH 70
#define SADB_X_DIAGNOSTIC_INNER_PROTO_MISMATCH 71

#define SADB_X_DIAGNOSTIC_DUAL_PORT_SETS 72

#define SADB_X_DIAGNOSTIC_PAIR_INAPPROPRIATE 73
#define SADB_X_DIAGNOSTIC_PAIR_ADD_MISMATCH 74
#define SADB_X_DIAGNOSTIC_PAIR_ALREADY 75
#define SADB_X_DIAGNOSTIC_PAIR_SA_NOTFOUND 76
#define SADB_X_DIAGNOSTIC_BAD_SA_DIRECTION 77

#define SADB_X_DIAGNOSTIC_SA_NOTFOUND 78
#define SADB_X_DIAGNOSTIC_SA_EXPIRED 79
#define SADB_X_DIAGNOSTIC_BAD_CTX 80
#define SADB_X_DIAGNOSTIC_INVALID_REPLAY 81
#define SADB_X_DIAGNOSTIC_MISSING_LIFETIME 82

#define SADB_X_DIAGNOSTIC_BAD_LABEL 83

#define SADB_X_DIAGNOSTIC_MISSING_ASTR 84
#define SADB_X_DIAGNOSTIC_DUPLICATE_ASTR 85
#define SADB_X_DIAGNOSTIC_MALFORMED_ASTR 86

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability Evolving

sockaddr (3SOCKET), ipsec (4P), ipsecah (4P), ipsecesp (4P), route (4P), udp (4P), in.iked (8), ipseckey (8), tcpkey (8)

McDonald, D.L., Metz, C.W., and Phan, B.G., RFC 2367, PF_KEY Key Management API, Version 2, The Internet Society, July 1998.

Time-based lifetimes may not expire with exact precision in seconds because kernel load may affect the aging of SAs.