7dd1a7be9e
Update of existing files based on libslirp 4.7.0 code. It compiles and works on Linux (gcc 10.4) and Windows (mingw/msys with gcc 14 and VS2019). Functionality tested on both platforms with Linux guest OS (Firefox shows website). Next step will be the start of the IPv6 integration.
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* Copyright (c) 1995 Danny Gasparovski.
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*/
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#ifndef SBUF_H
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#define SBUF_H
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/* How many bytes are free in the sbuf */
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#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
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struct sbuf {
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uint32_t sb_cc; /* actual chars in buffer */
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uint32_t sb_datalen; /* Length of data */
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char *sb_wptr; /* write pointer. points to where the next
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* bytes should be written in the sbuf */
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char *sb_rptr; /* read pointer. points to where the next
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* byte should be read from the sbuf */
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char *sb_data; /* Actual data */
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};
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/* Release the sbuf */
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void sbfree(struct sbuf *sb);
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/* Drop len bytes from the reading end of the sbuf */
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bool sbdrop(struct sbuf *sb, size_t len);
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/* (re)Allocate sbuf buffer to store size bytes */
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void sbreserve(struct sbuf *sb, size_t size);
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/*
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* Try and write() to the socket, whatever doesn't get written
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* append to the buffer... for a host with a fast net connection,
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* this prevents an unnecessary copy of the data
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* (the socket is non-blocking, so we won't hang)
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*/
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void sbappend(struct socket *sb, struct mbuf *mb);
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/*
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* Copy data from sbuf to a normal, straight buffer
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* Don't update the sbuf rptr, this will be
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* done in sbdrop when the data is acked
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*/
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void sbcopy(struct sbuf *sb, size_t off, size_t len, char *p);
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#endif
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