c89039850b
This patch revamps TIPC's print buffer subsystem to eliminate support for arbitrary chains of print buffers, which were rarely needed and difficult to use safely. In its place, print buffers can now be configured to echo their output to the system console. This provides an equivalent for the only chaining currently utilized by TIPC, in a faster and more compact manner. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
/*
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* net/tipc/dbg.h: Include file for TIPC print buffer routines
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*
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* Copyright (c) 1997-2006, Ericsson AB
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* Copyright (c) 2005-2007, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_DBG_H
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#define _TIPC_DBG_H
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/**
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* struct print_buf - TIPC print buffer structure
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* @buf: pointer to character array containing print buffer contents
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* @size: size of character array
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* @crs: pointer to first unused space in character array (i.e. final NUL)
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* @echo: echo output to system console if non-zero
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*/
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struct print_buf {
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char *buf;
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u32 size;
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char *crs;
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int echo;
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};
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#define TIPC_PB_MIN_SIZE 64 /* minimum size for a print buffer's array */
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#define TIPC_PB_MAX_STR 512 /* max printable string (with trailing NUL) */
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void tipc_printbuf_init(struct print_buf *pb, char *buf, u32 size);
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void tipc_printbuf_reset(struct print_buf *pb);
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int tipc_printbuf_empty(struct print_buf *pb);
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int tipc_printbuf_validate(struct print_buf *pb);
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void tipc_printbuf_move(struct print_buf *pb_to, struct print_buf *pb_from);
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int tipc_log_resize(int log_size);
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struct sk_buff *tipc_log_resize_cmd(const void *req_tlv_area,
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int req_tlv_space);
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struct sk_buff *tipc_log_dump(void);
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#endif
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