sadb_supported
auth_len += sizeof(struct sadb_supported);
enc_len += sizeof(struct sadb_supported);
struct sadb_supported *sp;
struct sadb_supported *sp;
[SADB_EXT_SUPPORTED_AUTH] = (u8) sizeof(struct sadb_supported),
[SADB_EXT_SUPPORTED_ENCRYPT] = (u8) sizeof(struct sadb_supported),