93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/* Layer 1 normal data burst tx handling */
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/* (C) 2010 by Dieter Spaar <spaar@mirider.augusta.de>
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* (C) 2010 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/protocol/gsm_08_58.h>
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#include <osmocom/core/msgb.h>
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#include <virtphy/l1ctl_sap.h>
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#include <virtphy/virt_l1_sched.h>
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#include <virtphy/logging.h>
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#include <virtphy/gsmtapl1_if.h>
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#include <l1ctl_proto.h>
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static struct l1_model_ms *l1_model_ms = NULL;
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static void virt_l1_sched_handler_cb(struct msgb * msg);
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/**
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* @brief Handler callback function for TRAFFIC request.
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*
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* @param [in] msg the msg to sent over virtual um.
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*/
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static void virt_l1_sched_handler_cb(struct msgb * msg)
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{
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gsmtapl1_tx_to_virt_um(msg);
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// send confirm to layer23
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msg = l1ctl_create_l2_msg(L1CTL_TRAFFIC_CONF,
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l1_model_ms->state->current_time.fn, 0, 0);
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l1ctl_sap_tx_to_l23(msg);
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}
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/**
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* @brief Handler for received L1CTL_TRAFFIC_REQ from L23.
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*
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* -- traffic request --
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*
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* @param [in] msg the received message.
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*
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* Enqueue the message (traffic frame) to the L1 state machine's transmit queue. In virtual layer1 just submit it to the virt um.
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*
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*/
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void l1ctl_rx_traffic_req(struct msgb *msg)
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{
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struct l1ctl_hdr *l1h = (struct l1ctl_hdr *)msg->data;
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struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *)l1h->data;
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struct l1ctl_traffic_req *tr = (struct l1ctl_traffic_req *)ul->payload;
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// TODO: calc the scheduled fn
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uint32_t fn_sched = l1_model_ms->state->current_time.fn;
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uint8_t rsl_chantype, subslot, timeslot;
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rsl_dec_chan_nr(ul->chan_nr, &rsl_chantype, &subslot, ×lot);
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DEBUGP(DL1C, "Received and handled from l23 - L1CTL_TRAFFIC_REQ\n");
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msg->l2h = tr->data;
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virt_l1_sched_schedule(msg, fn_sched, timeslot,
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&virt_l1_sched_handler_cb);
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}
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/**
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* @brief Initialize virtual prim traffic.
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*
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* @param [in] model the l1 model instance
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*/
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void prim_traffic_init(struct l1_model_ms *model)
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{
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l1_model_ms = model;
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}
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