diff options
| author | Stefan Sperling <ssperling@sysmocom.de> | 2018-02-06 13:20:23 +0100 |
|---|---|---|
| committer | Stefan Sperling <ssperling@sysmocom.de> | 2018-02-13 15:11:20 +0100 |
| commit | 1859515c690074d6915d0cc4c5acede3363ed75d (patch) | |
| tree | b869339953d4c30593df64bef838a24f58dab355 | |
| parent | 554780836f312fd64513b44b138d48294bde401b (diff) | |
Add helper functions for ACC bit flags in rach control IE.
Add inline functions to manipulate and query ACC flag bits
in the rach_control.t2 and rach_control.t3 octets.
These function definitions also serve as documentation of
the purpose of rach_control.t2/t3.
Change-Id: I8f0a65c2980f86eb5c43f3bebe727f4d4d973163
Related: OS#2591
| -rw-r--r-- | include/osmocom/gsm/protocol/gsm_04_08.h | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h index 0e027440..4a821cca 100644 --- a/include/osmocom/gsm/protocol/gsm_04_08.h +++ b/include/osmocom/gsm/protocol/gsm_04_08.h @@ -460,10 +460,51 @@ struct gsm48_rach_control { cell_bar :1, tx_integer :4, max_trans :2; - uint8_t t2; - uint8_t t3; + uint8_t t2; /* ACC 8-15 barred flags */ + uint8_t t3; /* ACC 0-7 barred flags */ } __attribute__ ((packed)); +/* + * Mark an Access Control Class as barred. + * \param[in] rach_control A Rach Control Information Element. + * \param[in] acc Access Control Class number (0 - 15) which shall be barred. + */ +static inline void gsm48_barr_acc(struct gsm48_rach_control *rach_control, unsigned int acc) +{ + OSMO_ASSERT(acc >= 0 && acc <= 15); + if (acc >= 8) + rach_control->t2 |= (1 << (acc - 8)); + else + rach_control->t3 |= (1 << (acc)); +} + +/* + * Mark an Access Control Class as allowed. + * \param[in] rach_control A Rach Control Information Element. + * \param[in] acc Access Control Class number (0 - 15) which shall be allowed. + */ +static inline void gsm48_allow_acc(struct gsm48_rach_control *rach_control, unsigned int acc) +{ + OSMO_ASSERT(acc >= 0 && acc <= 15); + if (acc >= 8) + rach_control->t2 &= ~(1 << (acc - 8)); + else + rach_control->t3 &= ~(1 << (acc)); +} + +/* + * Indicate whether an Access Control Class is barred. + * \param[in] rach_control A Rach Control Information Element. + * \param[in] acc Access Control Class number (0 - 15). + * \returns true if the Access Control class is barred, false otherwise + */ +static inline bool gsm48_acc_is_barred(struct gsm48_rach_control *rach_control, unsigned int acc) +{ + OSMO_ASSERT(acc >= 0 && acc <= 15); + if (acc >= 8) + return (rach_control->t2 & (1 << (acc - 8))) != 0; + return (rach_control->t3 & (1 << (acc))) != 0; +} /* Chapter 10.5.2.30 */ struct gsm48_req_ref { |