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27 lines
849 B
27 lines
849 B
// Copyright 2015 by Thorsten von Eicken, see LICENSE.txt
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#ifndef PKTBUF_H
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#define PKTBUF_H
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typedef struct PktBuf {
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struct PktBuf *next; // next buffer in chain
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uint16_t filled; // number of bytes filled in buffer
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uint8_t data[0]; // data in buffer
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} PktBuf;
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// Allocate a new packet buffer of given length
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PktBuf *PktBuf_New(uint16_t length);
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// Append a buffer to the end of a packet buffer queue, returns new head
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PktBuf *PktBuf_Push(PktBuf *headBuf, PktBuf *buf);
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// Prepend a buffer to the beginning of a packet buffer queue, return new head
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PktBuf * PktBuf_Unshift(PktBuf *headBuf, PktBuf *buf);
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// Shift first buffer off queue, returns new head (not shifted buffer!)
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PktBuf *PktBuf_Shift(PktBuf *headBuf);
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// Shift first buffer off queue, free it, return new head
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PktBuf *PktBuf_ShiftFree(PktBuf *headBuf);
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#endif
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