+++ /dev/null
-/*
- *
- * Copyright (c) 2007 Atheros Communications Inc.
- * 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 version 2 as
- * published by the Free Software Foundation;
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- *
- *
- */
-
-#ifndef HTC_PACKET_H_
-#define HTC_PACKET_H_
-
-
-#include "dl_list.h"
-
-struct _HTC_PACKET;
-
-typedef void (* HTC_PACKET_COMPLETION)(void *,struct _HTC_PACKET *);
-
-typedef A_UINT16 HTC_TX_TAG;
-
-typedef struct _HTC_TX_PACKET_INFO {
- HTC_TX_TAG Tag; /* tag used to selective flush packets */
-} HTC_TX_PACKET_INFO;
-
-#define HTC_TX_PACKET_TAG_ALL 0 /* a tag of zero is reserved and used to flush ALL packets */
-#define HTC_TX_PACKET_TAG_INTERNAL 1 /* internal tags start here */
-#define HTC_TX_PACKET_TAG_USER_DEFINED (HTC_TX_PACKET_TAG_INTERNAL + 9) /* user-defined tags start here */
-
-typedef struct _HTC_RX_PACKET_INFO {
- A_UINT32 Unused; /* for future use and to make compilers happy */
-} HTC_RX_PACKET_INFO;
-
-/* wrapper around endpoint-specific packets */
-typedef struct _HTC_PACKET {
- DL_LIST ListLink; /* double link */
- void *pPktContext; /* caller's per packet specific context */
-
- A_UINT8 *pBufferStart; /* the true buffer start , the caller can
- store the real buffer start here. In
- receive callbacks, the HTC layer sets pBuffer
- to the start of the payload past the header. This
- field allows the caller to reset pBuffer when it
- recycles receive packets back to HTC */
- /*
- * Pointer to the start of the buffer. In the transmit
- * direction this points to the start of the payload. In the
- * receive direction, however, the buffer when queued up
- * points to the start of the HTC header but when returned
- * to the caller points to the start of the payload
- */
- A_UINT8 *pBuffer; /* payload start (RX/TX) */
- A_UINT32 BufferLength; /* length of buffer */
- A_UINT32 ActualLength; /* actual length of payload */
- int Endpoint; /* endpoint that this packet was sent/recv'd from */
- A_STATUS Status; /* completion status */
- union {
- HTC_TX_PACKET_INFO AsTx; /* Tx Packet specific info */
- HTC_RX_PACKET_INFO AsRx; /* Rx Packet specific info */
- } PktInfo;
-
- /* the following fields are for internal HTC use */
- HTC_PACKET_COMPLETION Completion; /* completion */
- void *pContext; /* HTC private completion context */
- A_UINT32 HTCReserved; /* reserved */
-} HTC_PACKET;
-
-
-
-#define COMPLETE_HTC_PACKET(p,status) \
-{ \
- (p)->Status = (status); \
- (p)->Completion((p)->pContext,(p)); \
-}
-
-#define INIT_HTC_PACKET_INFO(p,b,len) \
-{ \
- (p)->pBufferStart = (b); \
- (p)->BufferLength = (len); \
-}
-
-/* macro to set an initial RX packet for refilling HTC */
-#define SET_HTC_PACKET_INFO_RX_REFILL(p,c,b,len,ep) \
-{ \
- (p)->pPktContext = (c); \
- (p)->pBuffer = (b); \
- (p)->pBufferStart = (b); \
- (p)->BufferLength = (len); \
- (p)->Endpoint = (ep); \
-}
-
-/* fast macro to recycle an RX packet that will be re-queued to HTC */
-#define HTC_PACKET_RESET_RX(p) \
- (p)->pBuffer = (p)->pBufferStart
-
-/* macro to set packet parameters for TX */
-#define SET_HTC_PACKET_INFO_TX(p,c,b,len,ep,tag) \
-{ \
- (p)->pPktContext = (c); \
- (p)->pBuffer = (b); \
- (p)->ActualLength = (len); \
- (p)->Endpoint = (ep); \
- (p)->PktInfo.AsTx.Tag = (tag); \
-}
-
-/* HTC Packet Queueing Macros */
-typedef DL_LIST HTC_PACKET_QUEUE;
-/* initialize queue */
-#define INIT_HTC_PACKET_QUEUE(pQ) DL_LIST_INIT((pQ))
-/* enqueue HTC packet to the tail of the queue */
-#define HTC_PACKET_ENQUEUE(pQ,p) DL_ListInsertTail((pQ),&(p)->ListLink)
-/* test if a queue is empty */
-#define HTC_QUEUE_EMPTY(pQ) DL_LIST_IS_EMPTY((pQ))
-/* get packet at head without removing it */
-#define HTC_GET_PKT_AT_HEAD(pQ) A_CONTAINING_STRUCT((DL_LIST_GET_ITEM_AT_HEAD(pQ)),HTC_PACKET,ListLink);
-/* remove a packet from the current list it is linked to */
-#define HTC_PACKET_REMOVE(p) DL_ListRemove(&(p)->ListLink)
-
-/* dequeue an HTC packet from the head of the queue */
-static INLINE HTC_PACKET *HTC_PACKET_DEQUEUE(HTC_PACKET_QUEUE *queue) {
- DL_LIST *pItem = DL_ListRemoveItemFromHead(queue);
- if (pItem != NULL) {
- return A_CONTAINING_STRUCT(pItem, HTC_PACKET, ListLink);
- }
- return NULL;
-}
-
-#endif /*HTC_PACKET_H_*/
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