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Max gerrit-no-reply at lists.osmocom.orgReview at https://gerrit.osmocom.org/3750 abis: fix unaligned memory access * replace pointer arithmetic with struct use to prevent unaligned memory access on arm. * constify function parameters Change-Id: Ie8a3107c22cd7f3682fac037e04a50ef3ea9171c Fixes: OS#2472 --- M openbsc/include/openbsc/gsm_data.h M openbsc/src/libbsc/abis_nm.c M openbsc/src/libcommon/gsm_data.c 3 files changed, 8 insertions(+), 6 deletions(-) git pull ssh://gerrit.osmocom.org:29418/openbsc refs/changes/50/3750/1 diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h index 4035b39..8b689a5 100644 --- a/openbsc/include/openbsc/gsm_data.h +++ b/openbsc/include/openbsc/gsm_data.h @@ -558,8 +558,8 @@ const char *bts_gprs_mode_name(enum bts_gprs_mode mode); int bts_gprs_mode_is_compat(struct gsm_bts *bts, enum bts_gprs_mode mode); -int gsm48_ra_id_by_bts(uint8_t *buf, struct gsm_bts *bts); -void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts); +int gsm48_ra_id_by_bts(uint8_t *buf, const struct gsm_bts *bts, bool rac_override); +void gprs_ra_id_by_bts(struct gprs_ra_id *raid, const struct gsm_bts *bts); struct gsm_meas_rep *lchan_next_meas_rep(struct gsm_lchan *lchan); int gsm_btsmodel_set_feature(struct gsm_bts_model *model, enum gsm_bts_features feat); diff --git a/openbsc/src/libbsc/abis_nm.c b/openbsc/src/libbsc/abis_nm.c index cf20d7c..ec1f8d1 100644 --- a/openbsc/src/libbsc/abis_nm.c +++ b/openbsc/src/libbsc/abis_nm.c @@ -2787,8 +2787,7 @@ { /* we simply reuse the GSM48 function and overwrite the RAC * with the Cell ID */ - gsm48_ra_id_by_bts(buf, bts); - *((uint16_t *)(buf + 5)) = htons(bts->cell_identity); + gsm48_ra_id_by_bts(buf, bts, true); } void gsm_trx_lock_rf(struct gsm_bts_trx *trx, int locked) diff --git a/openbsc/src/libcommon/gsm_data.c b/openbsc/src/libcommon/gsm_data.c index f1049e9..c62072f 100644 --- a/openbsc/src/libcommon/gsm_data.c +++ b/openbsc/src/libcommon/gsm_data.c @@ -335,7 +335,7 @@ return bts; } -void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts) +void gprs_ra_id_by_bts(struct gprs_ra_id *raid, const struct gsm_bts *bts) { raid->mcc = bts->network->country_code; raid->mnc = bts->network->network_code; @@ -343,12 +343,15 @@ raid->rac = bts->gprs.rac; } -int gsm48_ra_id_by_bts(uint8_t *buf, struct gsm_bts *bts) +int gsm48_ra_id_by_bts(uint8_t *buf, const struct gsm_bts *bts, bool rac_override) { struct gprs_ra_id raid; gprs_ra_id_by_bts(&raid, bts); + if (rac_override) + raid.rac = htons(bts->cell_identity); + return gsm48_construct_ra(buf, &raid); } -- To view, visit https://gerrit.osmocom.org/3750 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Ie8a3107c22cd7f3682fac037e04a50ef3ea9171c Gerrit-PatchSet: 1 Gerrit-Project: openbsc Gerrit-Branch: master Gerrit-Owner: Max <msuraev at sysmocom.de>