CARPLAY版本整理

MXC_A27-PCB4.5-270S/lib/wlan/rtl8821cs/include/skbuff.h

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+/******************************************************************************
+ * Copyright (c) 2013-2016 Realtek Semiconductor Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ******************************************************************************/
+#ifndef __SKBUFF_H__
+#define __SKBUFF_H__
+
+struct  sk_buff_head {
+	struct list_head	*next, *prev;
+	unsigned int 		qlen;
+};
+
+#if CONFIG_TRACE_SKB
+#define	TRACE_SKB_DEPTH			8
+#endif
+
+struct sk_buff {
+	/* These two members must be first. */
+	struct sk_buff		*next;		/* Next buffer in list */
+	struct sk_buff		*prev;		/* Previous buffer in list */
+	
+	struct sk_buff_head	*list;		/* List we are on */	
+	unsigned char		*head;		/* Head of buffer */
+	unsigned char		*data;		/* Data head pointer */
+	unsigned char		*tail;		/* Tail pointer	*/
+	unsigned char		*end;		/* End pointer */ 
+	void	*dev;		/* Device we arrived on/are leaving by */	
+	unsigned int 		len;		/* Length of actual data */	
+#if CONFIG_TRACE_SKB
+	unsigned int		liston[TRACE_SKB_DEPTH];	/* Trace the Lists we went through */
+	const char		*funcname[TRACE_SKB_DEPTH];
+	unsigned int		list_idx;	/* Trace the List we are on */
+#endif
+    int     		zerocp_flag;
+	int 			dyalloc_flag;
+	unsigned char	type_flag;
+};
+
+unsigned char *skb_put(struct sk_buff *skb, unsigned int len);
+unsigned char *skb_pull(struct sk_buff *skb, unsigned int len);
+void skb_reserve(struct sk_buff *skb, unsigned int len);
+void skb_assign_buf(struct sk_buff *skb, unsigned char *buf, unsigned int len);
+unsigned char *skb_tail_pointer(const struct sk_buff *skb);
+void skb_set_tail_pointer(struct sk_buff *skb, const int offset);
+unsigned char *skb_end_pointer(const struct sk_buff *skb);
+
+void skb_queue_head_init(struct sk_buff_head *list);
+struct sk_buff *skb_dequeue(struct sk_buff_head *list);
+void skb_reset_tail_pointer(struct sk_buff *skb);
+void skb_queue_tail(struct sk_buff_head *list, struct sk_buff *newsk);
+signed int skb_queue_len(const struct sk_buff_head *list_);
+
+void init_skb_pool(void);
+void init_skb_data_pool(void);
+
+
+#ifdef CONFIG_TX_ZERO_COPY
+struct sk_buff *dev_alloc_tx_skb_0copy();
+#endif
+struct sk_buff *dev_alloc_tx_skb(unsigned int length, unsigned int reserve_len);
+struct sk_buff *dev_alloc_rx_skb(unsigned int length, unsigned int reserve_len);
+void kfree_skb(struct sk_buff *skb);
+
+
+#endif //__SKBUFF_H__
+