diff options
Diffstat (limited to 'src/host/trxcon/phy_info.c')
-rw-r--r-- | src/host/trxcon/phy_info.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/host/trxcon/phy_info.c b/src/host/trxcon/phy_info.c new file mode 100644 index 00000000..2b73c82d --- /dev/null +++ b/src/host/trxcon/phy_info.c @@ -0,0 +1,92 @@ +/* + * L1CTL PHY info / features negotiation + * + * (C) 2018 by Vadim Yanitskiy <axilirator@gmail.com> + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <errno.h> +#include <stdint.h> + +#include <arpa/inet.h> + +#include <osmocom/core/negotiation.h> +#include <osmocom/core/utils.h> +#include <osmocom/core/msgb.h> + +#include "l1ctl_proto.h" + +static const struct value_string phy_info[] = { + {L1CTL_PHY_INFO_NAME, "trxcon"}, + { 0, NULL } +}; + +int trxcon_compose_phy_info(struct msgb *msg) +{ + struct l1ctl_phy_nego_ind *hdr; + uint8_t *features_tlv; + int rc; + + /* Header first */ + hdr = (struct l1ctl_phy_nego_ind *) msgb_put(msg, sizeof(*hdr)); + if (!hdr) + return -ENOMEM; + + /* Encode basic PHY info */ + rc = osmo_nego_enc_info(msg, phy_info); + if (rc < (ARRAY_SIZE(phy_info) - 1)) + return -EINVAL; + + /* PHY features TLV, length will be set latter */ + features_tlv = msgb_put(msg, 2); + if (!features_tlv) + return -ENOMEM; + + /* Frequency band support */ + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_BAND_400); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_BAND_850); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_BAND_900); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_BAND_DCS); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_BAND_PCS); + + /* Channel coding support */ + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_CHAN_XCCH); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_CHAN_TCHF); + + /* Voice codecs support */ + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_CODEC_FR); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_CODEC_EFR); + + /* A5/X ciphering support */ + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_A5_1); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_A5_2); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_A5_3); + + /* Other features */ + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_TX); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_PM); + osmo_nego_add_feature(msg, L1CTL_PHY_FEATURE_TRAFFIC); + + /* Finally, compute the length fields */ + features_tlv[0] = L1CTL_PHY_INFO_FEATURES; + features_tlv[1] = msg->tail - features_tlv - 2; + hdr->len = htons(msg->tail - hdr->data); + + return 0; +} |