From: Sylvain Munaut <tnt(a)246tNt.com> The previous code only sent the FILE_ID tag data part, but according to the GSM 12.21 spec, section 8.3.6, the full SW Description 'object' must be sent so that includes the NM_ATT_SW_DESCR tag, the whole FILE_ID and the whole FILE_VERSION (including tags & length fields). Note that functionnaly on a nanoBTS 139 I couldn't see any difference ... whatever I send in there it works ... Signed-off-by: Sylvain Munaut <tnt(a)246tNt.com> --- openbsc/src/abis_nm.c | 13 ++++++++++--- 1 files changed, 10 insertions(+), 3 deletions(-) diff --git a/openbsc/src/abis_nm.c b/openbsc/src/abis_nm.c index 35ed8db..a450452 100755 --- a/openbsc/src/abis_nm.c +++ b/openbsc/src/abis_nm.c @@ -857,6 +857,7 @@ static int abis_nm_rx_sw_act_req(struct msgb *mb) const u_int8_t *sw_config; int sw_config_len; int file_id_len; + int file_ver_len; int nack = 0; int ret; @@ -889,18 +890,24 @@ static int abis_nm_rx_sw_act_req(struct msgb *mb) if (sw_config[0] != NM_ATT_SW_DESCR) DEBUGP(DNM, "SW_DESCR attribute identifier not found!\n"); + if (sw_config[1] != NM_ATT_FILE_ID) DEBUGP(DNM, "FILE_ID attribute identifier not found!\n"); file_id_len = sw_config[2] * 256 + sw_config[3]; + if (sw_config[4+file_id_len] != NM_ATT_FILE_VERSION) + DEBUGP(DNM, "FILE_VERSION attribute identifier not found!\n"); + file_ver_len = sw_config[5+file_id_len] * 256 + sw_config[6+file_id_len]; + /* Assumes first SW file in list is the one to be activated */ - /* sw_config + 4 to skip over 2 attribute ID bytes and 16-bit length field */ + /* The +7 in length is to account for the 3 tags and 2 length fields */ + /* (see GSM 12.21 - 9.4.{62,18,19} for details */ return ipacc_sw_activate(mb->trx->bts, foh->obj_class, foh->obj_inst.bts_nr, foh->obj_inst.trx_nr, foh->obj_inst.ts_nr, - sw_config + 4, - file_id_len); + sw_config, + 7 + file_id_len + file_ver_len); } /* Receive a CHANGE_ADM_STATE_ACK, parse the TLV and update local state */ -- 1.6.4