114 lines
3.4 KiB
C
Executable File
114 lines
3.4 KiB
C
Executable File
/*
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* Packet interface
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* Copyright (C) 1999 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _ZEBRA_STREAM_H
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#define _ZEBRA_STREAM_H
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/* Stream buffer. */
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struct stream
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{
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struct stream *next;
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unsigned char *data;
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/* Put pointer. */
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unsigned long putp;
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/* Get pointer. */
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unsigned long getp;
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/* End of pointer. */
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unsigned long endp;
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/* Data size. */
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unsigned long size;
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};
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/* First in first out queue structure. */
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struct stream_fifo
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{
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unsigned long count;
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struct stream *head;
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struct stream *tail;
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};
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/* Utility macros. */
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#define STREAM_PNT(S) ((S)->data + (S)->getp)
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#define STREAM_SIZE(S) ((S)->size)
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#define STREAM_REMAIN(S) ((S)->size - (S)->putp)
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#define STREAM_DATA(S) ((S)->data)
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/* Stream prototypes. */
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struct stream *stream_new (size_t);
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void stream_free (struct stream *);
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unsigned long stream_get_getp (struct stream *);
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unsigned long stream_get_putp (struct stream *);
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unsigned long stream_get_endp (struct stream *);
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unsigned long stream_get_size (struct stream *);
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u_char *stream_get_data (struct stream *);
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void stream_set_getp (struct stream *, unsigned long);
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void stream_set_putp (struct stream *, unsigned long);
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void stream_forward (struct stream *, int);
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void stream_put (struct stream *, void *, size_t);
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int stream_putc (struct stream *, u_char);
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int stream_putc_at (struct stream *, unsigned long, u_char);
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int stream_putw (struct stream *, u_int16_t);
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int stream_putw_at (struct stream *, unsigned long, u_int16_t);
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int stream_putl (struct stream *, u_int32_t);
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int stream_putl_at (struct stream *, unsigned long, u_int32_t);
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int stream_put_ipv4 (struct stream *, u_int32_t);
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int stream_put_in_addr (struct stream *, struct in_addr *);
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void stream_get (void *, struct stream *, size_t);
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u_char stream_getc (struct stream *);
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u_char stream_getc_from (struct stream *, unsigned long);
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u_int16_t stream_getw (struct stream *);
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u_int16_t stream_getw_from (struct stream *, unsigned long);
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u_int32_t stream_getl (struct stream *);
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u_int32_t stream_get_ipv4 (struct stream *);
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#undef stream_read
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#undef stream_write
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int stream_read (struct stream *, int, size_t);
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int stream_read_unblock (struct stream *, int, size_t);
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int stream_write (struct stream *, u_char *, size_t);
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u_char *stream_pnt (struct stream *);
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void stream_reset (struct stream *);
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int stream_flush (struct stream *, int);
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int stream_empty (struct stream *);
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/* Stream fifo. */
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struct stream_fifo *stream_fifo_new ();
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void stream_fifo_push (struct stream_fifo *fifo, struct stream *s);
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struct stream *stream_fifo_pop (struct stream_fifo *fifo);
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struct stream *stream_fifo_head (struct stream_fifo *fifo);
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void stream_fifo_clean (struct stream_fifo *fifo);
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void stream_fifo_free (struct stream_fifo *fifo);
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#endif /* _ZEBRA_STREAM_H */
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