250 lines
6.7 KiB
C
250 lines
6.7 KiB
C
/*
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buf.h
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Copyright 1995 Philip Homburg
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*/
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#ifndef BUF_H
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#define BUF_H
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/* Note: BUF_S should be defined in const.h */
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#define MAX_BUFREQ_PRI 10
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#define ARP_PRI_REC 3
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#define ARP_PRI_SEND 3
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#define ETH_PRI_PORTBUFS 3
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#define ETH_PRI_FDBUFS_EXTRA 5
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#define ETH_PRI_FDBUFS 6
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#define IP_PRI_PORTBUFS 3
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#define IP_PRI_ASSBUFS 4
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#define IP_PRI_FDBUFS_EXTRA 5
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#define IP_PRI_FDBUFS 6
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#define ICMP_PRI_QUEUE 1
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#define TCP_PRI_FRAG2SEND 4
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#define TCP_PRI_CONN_EXTRA 5
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#define TCP_PRI_CONNwoUSER 7
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#define TCP_PRI_CONN_INUSE 9
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#define UDP_PRI_FDBUFS_EXTRA 5
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#define UDP_PRI_FDBUFS 6
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#define PSIP_PRI_EXP_PROMISC 2
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struct acc;
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typedef void (*buffree_t) ARGS(( struct acc *acc ));
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typedef void (*bf_freereq_t) ARGS(( int priority ));
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#ifdef BUF_CONSISTENCY_CHECK
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typedef void (*bf_checkreq_t) ARGS(( void ));
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#endif
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typedef struct buf
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{
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int buf_linkC;
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buffree_t buf_free;
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size_t buf_size;
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char *buf_data_p;
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#ifdef BUF_TRACK_ALLOC_FREE
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char *buf_alloc_file;
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int buf_alloc_line;
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char *buf_free_file;
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int buf_free_line;
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#endif
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#ifdef BUF_CONSISTENCY_CHECK
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unsigned buf_generation;
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int buf_check_linkC;
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#endif
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} buf_t;
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typedef struct acc
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{
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int acc_linkC;
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int acc_offset, acc_length;
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buf_t *acc_buffer;
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struct acc *acc_next, *acc_ext_link;
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#ifdef BUF_TRACK_ALLOC_FREE
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char *acc_alloc_file;
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int acc_alloc_line;
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char *acc_free_file;
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int acc_free_line;
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#endif
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#ifdef BUF_CONSISTENCY_CHECK
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unsigned acc_generation;
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int acc_check_linkC;
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#endif
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} acc_t;
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extern acc_t *bf_temporary_acc;
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extern acc_t *bf_linkcheck_acc;
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/* For debugging... */
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#ifdef BUF_TRACK_ALLOC_FREE
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#ifndef BUF_IMPLEMENTATION
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#define bf_memreq(a) _bf_memreq(this_file, __LINE__, a)
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#define bf_cut(a,b,c) _bf_cut(this_file, __LINE__, a, b, c)
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#define bf_delhead(a,b) _bf_delhead(this_file, __LINE__, a, b)
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#define bf_packIffLess(a,b) _bf_packIffLess(this_file, __LINE__, \
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a, b)
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#define bf_afree(a) _bf_afree(this_file, __LINE__, a)
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#define bf_pack(a) _bf_pack(this_file, __LINE__, a)
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#define bf_append(a,b) _bf_append(this_file, __LINE__, a, b)
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#define bf_dupacc(a) _bf_dupacc(this_file, __LINE__, a)
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#if 0
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#define bf_mark_1acc(a) _bf_mark_1acc(this_file, __LINE__, a)
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#define bf_mark_acc(a) _bf_mark_acc(this_file, __LINE__, a)
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#endif
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#define bf_align(a,s,al) _bf_align(this_file, __LINE__, a, s, al)
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#else /* BUF_IMPLEMENTATION */
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#define bf_afree(a) _bf_afree(clnt_file, clnt_line, a)
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#define bf_pack(a) _bf_pack(clnt_file, clnt_line, a)
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#define bf_memreq(a) _bf_memreq(clnt_file, clnt_line, a)
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#define bf_dupacc(a) _bf_dupacc(clnt_file, clnt_line, a)
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#define bf_cut(a,b,c) _bf_cut(clnt_file, clnt_line, a, b, c)
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#define bf_delhead(a,b) _bf_delhead(clnt_file, clnt_line, a, b)
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#define bf_align(a,s,al) _bf_align(clnt_file, clnt_line, a, s, al)
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#endif /* !BUF_IMPLEMENTATION */
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#else
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#define bf_mark_1acc(acc) ((void)0)
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#define bf_mark_acc(acc) ((void)0)
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#endif /* BUF_TRACK_ALLOC_FREE */
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/* Prototypes */
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void bf_init ARGS(( void ));
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#ifndef BUF_CONSISTENCY_CHECK
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void bf_logon ARGS(( bf_freereq_t func ));
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#else
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void bf_logon ARGS(( bf_freereq_t func, bf_checkreq_t checkfunc ));
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#endif
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_memreq ARGS(( unsigned size));
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#else
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acc_t *_bf_memreq ARGS(( char *clnt_file, int clnt_line,
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unsigned size));
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#endif
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/* the result is an acc with linkC == 1 */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_dupacc ARGS(( acc_t *acc ));
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#else
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acc_t *_bf_dupacc ARGS(( char *clnt_file, int clnt_line,
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acc_t *acc ));
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#endif
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/* the result is an acc with linkC == 1 identical to the given one */
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#ifndef BUF_TRACK_ALLOC_FREE
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void bf_afree ARGS(( acc_t *acc));
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#else
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void _bf_afree ARGS(( char *clnt_file, int clnt_line,
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acc_t *acc));
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#endif
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/* this reduces the linkC off the given acc with one */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_pack ARGS(( acc_t *pack));
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#else
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acc_t *_bf_pack ARGS(( char *clnt_file, int clnt_line,
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acc_t *pack));
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#endif
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/* this gives a packed copy of the given acc, the linkC of the given acc is
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reduced by one, the linkC of the result == 1 */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_packIffLess ARGS(( acc_t *pack, int min_len ));
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#else
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acc_t *_bf_packIffLess ARGS(( char *clnt_file, int clnt_line,
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acc_t *pack, int min_len ));
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#endif
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/* this performs a bf_pack iff pack->acc_length<min_len */
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size_t bf_bufsize ARGS(( acc_t *pack));
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/* this gives the length of the buffer specified by the given acc. The linkC
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of the given acc remains the same */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_cut ARGS(( acc_t *data, unsigned offset, unsigned length ));
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#else
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acc_t *_bf_cut ARGS(( char *clnt_file, int clnt_line,
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acc_t *data, unsigned offset, unsigned length ));
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#endif
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/* the result is a cut of the buffer from offset with length length.
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The linkC of the result == 1, the linkC of the given acc remains the
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same. */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_delhead ARGS(( acc_t *data, unsigned offset ));
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#else
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acc_t *_bf_delhead ARGS(( char *clnt_file, int clnt_line,
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acc_t *data, unsigned offset ));
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#endif
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/* the result is a cut of the buffer from offset until the end.
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The linkC of the result == 1, the linkC of the given acc is
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decremented. */
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_append ARGS(( acc_t *data_first, acc_t *data_second ));
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#else
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acc_t *_bf_append ARGS(( char *clnt_file, int clnt_line,
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acc_t *data_first, acc_t *data_second ));
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#endif
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/* data_second is appended after data_first, a link is returned to the
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result and the linkCs of data_first and data_second are reduced.
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further more, if the contents of the last part of data_first and
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the first part of data_second fit in a buffer, both parts are
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copied into a (possibly fresh) buffer
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*/
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#ifndef BUF_TRACK_ALLOC_FREE
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acc_t *bf_align ARGS(( acc_t *acc, size_t size, size_t alignment ));
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#else
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acc_t *_bf_align ARGS(( char *clnt_file, int clnt_line,
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acc_t *acc, size_t size, size_t alignment ));
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#endif
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/* size bytes of acc (or all bytes of acc if the size buffer is smaller
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than size) are aligned on an address that is multiple of alignment.
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Size must be less than or equal to BUF_S.
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*/
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int bf_linkcheck ARGS(( acc_t *acc ));
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/* check if all link count are positive, and offsets and sizes are within
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* the underlying buffer.
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*/
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#define ptr2acc_data(/* acc_t * */ a) (bf_temporary_acc=(a), \
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(&bf_temporary_acc->acc_buffer->buf_data_p[bf_temporary_acc-> \
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acc_offset]))
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#define bf_chkbuf(buf) ((buf)? (compare((buf)->acc_linkC,>,0), \
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compare((buf)->acc_buffer, !=, 0), \
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compare((buf)->acc_buffer->buf_linkC,>,0)) : (void)0)
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#ifdef BUF_CONSISTENCY_CHECK
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int bf_consistency_check ARGS(( void ));
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void bf_check_acc ARGS(( acc_t *acc ));
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void _bf_mark_1acc ARGS(( char *clnt_file, int clnt_line, acc_t *acc ));
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void _bf_mark_acc ARGS(( char *clnt_file, int clnt_line, acc_t *acc ));
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#endif
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#endif /* BUF_H */
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/*
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* $PchId: buf.h,v 1.13 2003/09/10 08:52:09 philip Exp $
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*/
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