[PATCH 1/2] Refactor mncc code

From: Max &lt;msuraev(a)sysmocom.de&gt; Use bool for boolean types. Consistently use enums instead of (u)int, char etc. Note: because actual enum representation is up to compiler this might change the size of gsm_mncc struct. --- openbsc/include/openbsc/bsc_api.h | 4 +++- openbsc/include/openbsc/gsm_04_08.h | 2 +- openbsc/include/openbsc/mncc.h | 6 ++++-- openbsc/include/openbsc/mncc_int.h | 5 ++++- openbsc/src/libbsc/bsc_api.c | 17 +++++++++-------- openbsc/src/libbsc/gsm_04_08_utils.c | 12 +++--------- openbsc/src/libmsc/mncc_builtin.c | 7 +++++-- 7 files changed, 29 insertions(+), 24 deletions(-) diff --git a/openbsc/include/openbsc/bsc_api.h b/openbsc/include/openbsc/bsc_api.h index a3d12f2..d0a0164 100644 --- a/openbsc/include/openbsc/bsc_api.h +++ b/openbsc/include/openbsc/bsc_api.h @@ -3,6 +3,8 @@ #ifndef OPENBSC_BSC_API_H #define OPENBSC_BSC_API_H +#include <stdbool.h> + #include "gsm_data.h" #define BSC_API_CONN_POL_ACCEPT 0 @@ -45,7 +47,7 @@ struct bsc_api { int bsc_api_init(struct gsm_network *network, struct bsc_api *api); int gsm0808_submit_dtap(struct gsm_subscriber_connection *conn, struct msgb *msg, int link_id, int allow_sacch); -int gsm0808_assign_req(struct gsm_subscriber_connection *conn, int chan_mode, int full_rate); +int gsm0808_assign_req(struct gsm_subscriber_connection *conn, enum gsm48_chan_mode chan_mode, bool full_rate); int gsm0808_cipher_mode(struct gsm_subscriber_connection *conn, int cipher, const uint8_t *key, int len, int include_imeisv); int gsm0808_page(struct gsm_bts *bts, unsigned int page_group, diff --git a/openbsc/include/openbsc/gsm_04_08.h b/openbsc/include/openbsc/gsm_04_08.h index fd0b89d..d333e13 100644 --- a/openbsc/include/openbsc/gsm_04_08.h +++ b/openbsc/include/openbsc/gsm_04_08.h @@ -79,7 +79,7 @@ int gsm48_extract_mi(uint8_t *classmark2, int length, char *mi_string, uint8_t * int gsm48_paging_extract_mi(struct gsm48_pag_resp *pag, int length, char *mi_string, uint8_t *mi_type); int gsm48_handle_paging_resp(struct gsm_subscriber_connection *conn, struct msgb *msg, struct gsm_subscriber *subscr); -int gsm48_lchan_modify(struct gsm_lchan *lchan, uint8_t lchan_mode); +int gsm48_lchan_modify(struct gsm_lchan *lchan, enum gsm48_chan_mode lchan_mode); int gsm48_rx_rr_modif_ack(struct msgb *msg); int gsm48_parse_meas_rep(struct gsm_meas_rep *rep, struct msgb *msg); diff --git a/openbsc/include/openbsc/mncc.h b/openbsc/include/openbsc/mncc.h index 49f0c8b..ce2f87d 100644 --- a/openbsc/include/openbsc/mncc.h +++ b/openbsc/include/openbsc/mncc.h @@ -26,6 +26,8 @@ #include <osmocom/core/linuxlist.h> #include <osmocom/gsm/mncc.h> +#include <osmocom/gsm/gsm_utils.h> +#include <osmocom/gsm/protocol/gsm_04_08.h> #include <stdint.h> @@ -156,8 +158,8 @@ struct gsm_mncc { int emergency; char imsi[16]; - unsigned char lchan_type; - unsigned char lchan_mode; + enum gsm_chan_t lchan_type; + enum gsm48_chan_mode lchan_mode; }; struct gsm_data_frame { diff --git a/openbsc/include/openbsc/mncc_int.h b/openbsc/include/openbsc/mncc_int.h index 213ce14..dafef25 100644 --- a/openbsc/include/openbsc/mncc_int.h +++ b/openbsc/include/openbsc/mncc_int.h @@ -3,12 +3,15 @@ #include <stdint.h> +#include <osmocom/gsm/gsm_utils.h> +#include <osmocom/gsm/protocol/gsm_04_08.h> + struct mncc_int { uint8_t def_codec[2]; }; extern struct mncc_int mncc_int; -uint8_t mncc_codec_for_mode(int lchan_type); +enum gsm48_chan_mode mncc_codec_for_mode(enum gsm_chan_t lchan_type); #endif diff --git a/openbsc/src/libbsc/bsc_api.c b/openbsc/src/libbsc/bsc_api.c index e6d820d..9ddd647 100644 --- a/openbsc/src/libbsc/bsc_api.c +++ b/openbsc/src/libbsc/bsc_api.c @@ -21,6 +21,8 @@ * */ +#include <stdbool.h> + #include <openbsc/bsc_api.h> #include <openbsc/bsc_rll.h> #include <openbsc/gsm_data.h> @@ -34,7 +36,7 @@ #include <openbsc/trau_mux.h> #include <osmocom/gsm/protocol/gsm_08_08.h> - +#include <osmocom/gsm/protocol/gsm_04_08.h> #include <osmocom/core/talloc.h> #define GSM0808_T10_VALUE 6, 0 @@ -155,7 +157,7 @@ static void assignment_t10_timeout(void *_conn) * Handle the multirate config */ static void handle_mr_config(struct gsm_subscriber_connection *conn, - struct gsm_lchan *lchan, int full_rate) + struct gsm_lchan *lchan, bool full_rate) { struct bsc_api *api; api = conn->bts->network->bsc_api; @@ -197,12 +199,10 @@ static void handle_mr_config(struct gsm_subscriber_connection *conn, * -> Assignment Complete/Assignment Failure * 5.) Release the SDCCH, continue signalling on the new link */ -static int handle_new_assignment(struct gsm_subscriber_connection *conn, int chan_mode, int full_rate) +static int handle_new_assignment(struct gsm_subscriber_connection *conn, enum gsm48_chan_mode chan_mode, bool full_rate) { struct gsm_lchan *new_lchan; - int chan_type; - - chan_type = full_rate ? GSM_LCHAN_TCH_F : GSM_LCHAN_TCH_H; + enum gsm_chan_t chan_type = full_rate ? GSM_LCHAN_TCH_F : GSM_LCHAN_TCH_H; new_lchan = lchan_alloc(conn->bts, chan_type, 0); @@ -337,7 +337,7 @@ int gsm0808_submit_dtap(struct gsm_subscriber_connection *conn, /* * \brief Check if the given channel is compatible with the mode/fullrate */ -static int chan_compat_with_mode(struct gsm_lchan *lchan, int chan_mode, int full_rate) +static int chan_compat_with_mode(struct gsm_lchan *lchan, enum gsm48_chan_mode chan_mode, bool full_rate) { switch (chan_mode) { case GSM48_CMODE_SIGN: @@ -384,7 +384,8 @@ static int chan_compat_with_mode(struct gsm_lchan *lchan, int chan_mode, int ful * * TODO: Add multirate configuration, make it work for more than audio. */ -int gsm0808_assign_req(struct gsm_subscriber_connection *conn, int chan_mode, int full_rate) +int gsm0808_assign_req(struct gsm_subscriber_connection *conn, + enum gsm48_chan_mode chan_mode, bool full_rate) { struct bsc_api *api; api = conn->bts->network->bsc_api; diff --git a/openbsc/src/libbsc/gsm_04_08_utils.c b/openbsc/src/libbsc/gsm_04_08_utils.c index 8c6dbef..79a8547 100644 --- a/openbsc/src/libbsc/gsm_04_08_utils.c +++ b/openbsc/src/libbsc/gsm_04_08_utils.c @@ -488,7 +488,7 @@ int gsm48_send_rr_ass_cmd(struct gsm_lchan *dest_lchan, struct gsm_lchan *lchan, } /* 9.1.5 Channel mode modify: Modify the mode on the MS side */ -int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, uint8_t mode) +int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, enum gsm48_chan_mode mode) { struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 CHN MOD"); struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); @@ -513,15 +513,9 @@ int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, uint8_t mode) return gsm48_sendmsg(msg); } -int gsm48_lchan_modify(struct gsm_lchan *lchan, uint8_t lchan_mode) +int gsm48_lchan_modify(struct gsm_lchan *lchan, enum gsm48_chan_mode lchan_mode) { - int rc; - - rc = gsm48_tx_chan_mode_modify(lchan, lchan_mode); - if (rc < 0) - return rc; - - return rc; + return gsm48_tx_chan_mode_modify(lchan, lchan_mode); } int gsm48_rx_rr_modif_ack(struct msgb *msg) diff --git a/openbsc/src/libmsc/mncc_builtin.c b/openbsc/src/libmsc/mncc_builtin.c index 77df6fb..0942304 100644 --- a/openbsc/src/libmsc/mncc_builtin.c +++ b/openbsc/src/libmsc/mncc_builtin.c @@ -27,6 +27,9 @@ #include <string.h> #include <errno.h> +#include <osmocom/gsm/gsm_utils.h> +#include <osmocom/gsm/protocol/gsm_04_08.h> + #include <openbsc/gsm_04_08.h> #include <openbsc/debug.h> #include <openbsc/mncc.h> @@ -65,7 +68,7 @@ static struct gsm_call *get_call_ref(uint32_t callref) return NULL; } -uint8_t mncc_codec_for_mode(int lchan_type) +enum gsm48_chan_mode mncc_codec_for_mode(enum gsm_chan_t lchan_type) { /* FIXME: check codec capabilities of the phone */ @@ -75,7 +78,7 @@ uint8_t mncc_codec_for_mode(int lchan_type) return mncc_int.def_codec[1]; } -static uint8_t determine_lchan_mode(struct gsm_mncc *setup) +static enum gsm48_chan_mode determine_lchan_mode(struct gsm_mncc *setup) { return mncc_codec_for_mode(setup->lchan_type); } -- 2.7.4