diff options
author | Álvaro Neira Ayuso <anayuso@sysmocom.de> | 2014-05-17 11:01:13 +0200 |
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committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2014-05-18 09:42:49 +0200 |
commit | c64d42573894d8295b58b268a64541c914b69bcd (patch) | |
tree | 6798106526852e2c1f0b3e231727cdded742d1b8 /src/osmo-bts-sysmo/misc/sysmobts_misc.c | |
parent | c5fedd24c96a4ef6d7a0c0ed3c70d6ef0abd5c17 (diff) |
sysmobts: Add support for changing the transmit power in sbts2050
Make the sysmobts-mgr send a manufacturer O&M message with the power
reduction we want the sysmobts to apply. The sysmobts will handle
this message and set the new tx output power. An ACK/NACK will be
send as a response to the power reduction.
Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>
Diffstat (limited to 'src/osmo-bts-sysmo/misc/sysmobts_misc.c')
-rw-r--r-- | src/osmo-bts-sysmo/misc/sysmobts_misc.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/osmo-bts-sysmo/misc/sysmobts_misc.c b/src/osmo-bts-sysmo/misc/sysmobts_misc.c index 2417c3d9..6277a6bf 100644 --- a/src/osmo-bts-sysmo/misc/sysmobts_misc.c +++ b/src/osmo-bts-sysmo/misc/sysmobts_misc.c @@ -58,6 +58,23 @@ #define OM_HEADROOM_SIZE 128 #ifdef BUILD_SBTS2050 + +static int check_manufacturer_reduce_nach_ack(struct msgb *msg) +{ + struct abis_om_fom_hdr *foh = msgb_l3(msg); + + if (foh->msg_type == NM_MT_SET_RADIO_ATTR + 2) { /* NACK */ + LOGP(DTEMP, LOGL_ERROR, "Reduce Power: Received a BTS NACK\n"); + return -1; + } else if (foh->msg_type != NM_MT_SET_RADIO_ATTR + 1) { /* ACK */ + LOGP(DTEMP, LOGL_ERROR, "Unknown message type %d\n", + foh->msg_type); + return -1; + } + + return 0; +} + static void add_sw_descr(struct msgb *msg) { char file_version[255]; @@ -112,6 +129,61 @@ static void add_oml_hdr_msg(struct msgb *msg, uint8_t msg_type, omh->length = msgb_l3len(msg); } +int send_manufacturer_reduce_msg(int fd_unix, int reduce_power, int trx_nr) +{ + int rc; + struct msgb *msg; + + msg = msgb_alloc_headroom(OM_ALLOC_SIZE, OM_HEADROOM_SIZE, "OML"); + if (msg == NULL) { + LOGP(DTEMP, LOGL_ERROR, "Error creating oml msg\n"); + return -1; + } + + add_oml_hdr_msg(msg, NM_MT_SET_RADIO_ATTR, 2, 0, trx_nr, 255, 1); + + msgb_tv_put(msg, NM_ATT_O_REDUCEPOWER, reduce_power); + + prepend_oml_ipa_header(msg); + + rc = send(fd_unix, msg->data, msg->len, 0); + if (rc < 0 || rc != msg->len) { + LOGP(DTEMP, LOGL_ERROR, + "send error %s during Reduce Manufacturer O&M msg send\n", + strerror(errno)); + goto err; + } + + msgb_reset(msg); + rc = recv(fd_unix, msg->tail, msg->data_len, 0); + if (rc <= 0) { + LOGP(DTEMP, LOGL_ERROR, "recv error %s during ACK/NACK recv\n", + strerror(errno)); + goto err; + } + msgb_put(msg, rc); + + if (check_oml_msg(msg) < 0) { + close(fd_unix); + msgb_free(msg); + return -1; + } + + if (check_manufacturer_reduce_nach_ack(msg) < 0) { + close(fd_unix); + msgb_free(msg); + return -1; + } + + msgb_free(msg); + return SYSMO_MGR_CONNECTED; + +err: + close(fd_unix); + msgb_free(msg); + return SYSMO_MGR_DISCONNECTED; +} + int send_omlfailure(int fd_unix, enum sbts2050_alert_lvl alert, enum sbts2050_temp_sensor sensor, struct sbts2050_config_info *add_info, int trx_nr) |