Initial commit: TXW82x FPV v2.7.0.7-42229 SDK + project sources

sdk/include/lib/skb/skbuff.h

@@ -0,0 +1,64 @@
+#ifndef _HGIC_SKBUFF_H_
+#define _HGIC_SKBUFF_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <osal/atomic.h>
+#include <osal/string.h>
+#include "list.h"
+
+struct sk_buff {
+    struct sk_buff *next, *prev, *clone;
+    uint8   cb[12];
+    uint8  *tail;
+    uint8  *data;
+    uint8  *head;
+    uint8  *end;
+
+    /* clear below flags when skb free */
+    uint16  len;
+    uint16  priority:4, acked: 1, cloned: 1, lmaced: 1, pkt_type: 3, tx: 1, src_in: 1, unreachable:1, rev:3;
+    uint64  lifetime;
+    void   *txinfo;
+    void   *sta;
+    /////////////////////////////////////
+    atomic_t users;
+    void (*free)(void *free_priv, struct sk_buff *skb);
+    void *free_priv;
+};
+
+uint8 *skb_put(struct sk_buff *skb, uint32 len);
+uint8 *skb_push(struct sk_buff *skb, uint32 len);
+uint8 *skb_pull(struct sk_buff *skb, uint32 len);
+void skb_reserve(struct sk_buff *skb, int len);
+
+static inline int skb_tailroom(const struct sk_buff *skb)
+{
+    return (skb->end - skb->tail);
+}
+
+static inline unsigned int skb_headroom(const struct sk_buff *skb)
+{
+    return skb->data - skb->head;
+}
+
+static inline int skb_dataroom(const struct sk_buff *skb)
+{
+    return (skb->end - skb->data);
+}
+
+static inline struct sk_buff *skb_get(struct sk_buff *skb)
+{
+    atomic_inc(&skb->users);
+    return skb;
+}
+
+void *skb_put_zero(struct sk_buff *skb, unsigned int len);
+void *skb_put_data(struct sk_buff *skb, const void *data, unsigned int len);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+