host/trxcon/l1ctl.c: share primitive management code

This change introduces shared primitive management functions,
exposed from the l1ctl_rx_data_req() implementation:

  - sched_trx_init_prim() - allocates memory for a new primitive
    and its payload. Initializes primitive's header, setting
    the logical channel type and the payload length. After
    initialization, the talloc context of a primitive is
    a trx instance, which passed as the first argument.

  - sched_trx_push_prim() - decodes the timeslot index from
    chan_nr and pushes a primitive to its transimt queue.
    The talloc context of primitive is changed to the
    parent trx_ts instance after queuing.

Both functions will be used for handling both L1CTL_TRAFFIC_REQ
and L1CTL_RACH_REQ.

Change-Id: I8169a1ef4ef54d91b50f3e213e4842f54af8b499

1 files changed, 8 insertions, 0 deletions

diff --git a/src/host/trxcon/sched_trx.h b/src/host/trxcon/sched_trx.h
index 1b74041c..4209f533 100644
--- a/src/host/trxcon/sched_trx.h
+++ b/src/host/trxcon/sched_trx.h
@@ -235,6 +235,8 @@ struct trx_ts_prim {
 	struct llist_head list;
 	/*! \brief Logical channel type */
 	enum trx_lchan_type chan;
+	/*! \brief Payload length */
+	size_t payload_len;
 	/*! \brief Payload */
 	uint8_t payload[0];
 };
@@ -267,5 +269,11 @@ int sched_trx_deactivate_lchan(struct trx_ts *ts, enum trx_lchan_type chan);
 struct trx_lchan_state *sched_trx_find_lchan(struct trx_ts *ts,
 	enum trx_lchan_type chan);
 
+/* Primitive management functions */
+int sched_trx_init_prim(struct trx_instance *trx, struct trx_ts_prim **prim,
+	size_t pl_len, uint8_t chan_nr, uint8_t link_id);
+int sched_trx_push_prim(struct trx_instance *trx,
+	struct trx_ts_prim *prim, uint8_t chan_nr);
+
 int sched_trx_handle_rx_burst(struct trx_instance *trx, uint8_t tn,
 	uint32_t burst_fn, sbit_t *bits, uint16_t nbits, int8_t rssi, float toa);