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Changed Ringbuf API: Ringbuf_Pop_Front is now Ringbuf_Pop, and now it copies the buffer into parameter and returns boolean. Original method was not safe since it returned a pointer to the element but freed the buffer element. Changed Ringbuf_Get_Front to Ringbuf_Peek with no change in functionality, to make names more consistent.

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Updated all the MS/TP datalink layer implementations that use Ringbuf library.
This commit is contained in:
skarg
2013-01-08 20:48:34 +00:00
parent 3bc404dbe9
commit cf882642a8
8 changed files with 107 additions and 65 deletions
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bacnet-stack/ports/at91sam7s/dlmstp.c
+6 -5
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@@ -763,7 +763,7 @@ static bool MSTP_Master_Node_FSM(
transition_now = true;
} else {
uint8_t frame_type;
pkt = (struct mstp_pdu_packet *) Ringbuf_Pop_Front(&PDU_Queue);
pkt = (struct mstp_pdu_packet *) Ringbuf_Peek(&PDU_Queue);
if (pkt->data_expecting_reply) {
frame_type = FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY;
} else {
@@ -790,6 +790,7 @@ static bool MSTP_Master_Node_FSM(
Master_State = MSTP_MASTER_STATE_DONE_WITH_TOKEN;
break;
}
(void) Ringbuf_Pop(&PDU_Queue, NULL);
}
break;
case MSTP_MASTER_STATE_WAIT_FOR_REPLY:
@@ -1091,7 +1092,7 @@ static bool MSTP_Master_Node_FSM(
/* BACnet Data Expecting Reply, a Test_Request, or */
/* a proprietary frame that expects a reply is received. */
case MSTP_MASTER_STATE_ANSWER_DATA_REQUEST:
pkt = (struct mstp_pdu_packet *) Ringbuf_Get_Front(&PDU_Queue);
pkt = (struct mstp_pdu_packet *) Ringbuf_Peek(&PDU_Queue);
if (pkt != NULL) {
matched =
dlmstp_compare_data_expecting_reply(&InputBuffer[0],
@@ -1109,7 +1110,6 @@ static bool MSTP_Master_Node_FSM(
/* then call MSTP_Send_Frame to transmit the reply frame */
/* and enter the IDLE state to wait for the next frame. */
uint8_t frame_type;
pkt = (struct mstp_pdu_packet *) Ringbuf_Pop_Front(&PDU_Queue);
if (pkt->data_expecting_reply) {
frame_type = FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY;
} else {
@@ -1117,6 +1117,7 @@ static bool MSTP_Master_Node_FSM(
}
MSTP_Send_Frame(frame_type, pkt->destination_mac, This_Station,
(uint8_t *) & pkt->buffer[0], pkt->length);
(void) Ringbuf_Pop(&PDU_Queue, NULL);
Master_State = MSTP_MASTER_STATE_IDLE;
/* clear our flag we were holding for comparison */
MSTP_Flag.ReceivedValidFrame = false;
@@ -1180,7 +1181,7 @@ static void MSTP_Slave_Node_FSM(
}
} else if (MSTP_Flag.ReceivePacketPending) {
if (!Ringbuf_Empty(&PDU_Queue)) {
pkt = (struct mstp_pdu_packet *) Ringbuf_Pop_Front(&PDU_Queue);
pkt = (struct mstp_pdu_packet *) Ringbuf_Peek(&PDU_Queue);
matched =
dlmstp_compare_data_expecting_reply(&InputBuffer[0],
DataLength, SourceAddress, &pkt->buffer[0], pkt->length,
@@ -1194,7 +1195,6 @@ static void MSTP_Slave_Node_FSM(
/* then call MSTP_Send_Frame to transmit the reply frame */
/* and enter the IDLE state to wait for the next frame. */
uint8_t frame_type;
pkt = (struct mstp_pdu_packet *) Ringbuf_Pop_Front(&PDU_Queue);
if (pkt->data_expecting_reply) {
frame_type = FRAME_TYPE_BACNET_DATA_EXPECTING_REPLY;
} else {
@@ -1202,6 +1202,7 @@ static void MSTP_Slave_Node_FSM(
}
MSTP_Send_Frame(frame_type, pkt->destination_mac, This_Station,
(uint8_t *) & pkt->buffer[0], pkt->length);
(void) Ringbuf_Pop(&PDU_Queue, NULL);
}
/* clear our flag we were holding for comparison */
MSTP_Flag.ReceivePacketPending = false;