diff options
Diffstat (limited to 'include/osmocom')
| -rw-r--r-- | include/osmocom/gsm/protocol/gsm_08_08.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h index a5406095..e791b070 100644 --- a/include/osmocom/gsm/protocol/gsm_08_08.h +++ b/include/osmocom/gsm/protocol/gsm_08_08.h @@ -7,6 +7,7 @@ #include <stdint.h> #include <osmocom/core/linuxlist.h> #include <osmocom/core/utils.h> +#include <osmocom/core/endian.h> /* * this is from GSM 03.03 CGI but is copied in GSM 08.08 @@ -40,11 +41,37 @@ struct bssmap_header { } __attribute__((packed)); struct dtap_header { +#if OSMO_IS_LITTLE_ENDIAN uint8_t type; - uint8_t link_id; + union { + uint8_t link_id; /* Backward compatibility */ + struct { + uint8_t dlci_cc:2, + dlci_spare:3, + dlci_sapi:3; /* enum gsm0406_dlc_sapi */ + }; + }; uint8_t length; +#elif OSMO_IS_BIG_ENDIAN + uint8_t type; + union { + uint8_t link_id; + struct { + uint8_t dlci_sapi:3, dlci_spare:3, dlci_cc:2; + }; + }; + uint8_t length; +#endif } __attribute__((packed)); +/* Data Link Control SAPI, GSM 08.06 § 6.3.2, GSM 04.06 § 3.3.3 */ +enum gsm0406_dlci_sapi { + DLCI_SAPI_RR_MM_CC = 0x0, + DLCI_SAPI_SMS = 0x3, +}; +extern const struct value_string gsm0406_dlci_sapi_names[]; +static inline const char *gsm0406_dlci_sapi_name(enum gsm0406_dlci_sapi val) +{ return get_value_string(gsm0406_dlci_sapi_names, val); } enum BSS_MAP_MSG_TYPE { BSS_MAP_MSG_RESERVED_0 = 0, |