9da1c8b694
The copyright statements from different parts of Ericsson have been merged into one. Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
224 lines
6.4 KiB
C
224 lines
6.4 KiB
C
/*
|
|
* include/net/tipc/tipc_msg.h: Include file for privileged access to TIPC message headers
|
|
*
|
|
* Copyright (c) 2003-2006, Ericsson AB
|
|
* Copyright (c) 2005, Wind River Systems
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _NET_TIPC_MSG_H_
|
|
#define _NET_TIPC_MSG_H_
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
struct tipc_msg {
|
|
u32 hdr[15];
|
|
};
|
|
|
|
|
|
/*
|
|
TIPC user data message header format, version 2:
|
|
|
|
|
|
1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w0:|vers | user |hdr sz |n|d|s|-| message size |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w1:|mstyp| error |rer cnt|lsc|opt p| broadcast ack no |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w2:| link level ack no | broadcast/link level seq no |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w3:| previous node |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w4:| originating port |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w5:| destination port |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w6:| originating node |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w7:| destination node |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w8:| name type / transport sequence number |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
w9:| name instance/multicast lower bound |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
wA:| multicast upper bound |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
/ /
|
|
\ options \
|
|
/ /
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
*/
|
|
|
|
#define TIPC_CONN_MSG 0
|
|
#define TIPC_MCAST_MSG 1
|
|
#define TIPC_NAMED_MSG 2
|
|
#define TIPC_DIRECT_MSG 3
|
|
|
|
|
|
static inline u32 msg_word(struct tipc_msg *m, u32 pos)
|
|
{
|
|
return ntohl(m->hdr[pos]);
|
|
}
|
|
|
|
static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
|
|
{
|
|
return (msg_word(m, w) >> pos) & mask;
|
|
}
|
|
|
|
static inline u32 msg_importance(struct tipc_msg *m)
|
|
{
|
|
return msg_bits(m, 0, 25, 0xf);
|
|
}
|
|
|
|
static inline u32 msg_hdr_sz(struct tipc_msg *m)
|
|
{
|
|
return msg_bits(m, 0, 21, 0xf) << 2;
|
|
}
|
|
|
|
static inline int msg_short(struct tipc_msg *m)
|
|
{
|
|
return (msg_hdr_sz(m) == 24);
|
|
}
|
|
|
|
static inline u32 msg_size(struct tipc_msg *m)
|
|
{
|
|
return msg_bits(m, 0, 0, 0x1ffff);
|
|
}
|
|
|
|
static inline u32 msg_data_sz(struct tipc_msg *m)
|
|
{
|
|
return (msg_size(m) - msg_hdr_sz(m));
|
|
}
|
|
|
|
static inline unchar *msg_data(struct tipc_msg *m)
|
|
{
|
|
return ((unchar *)m) + msg_hdr_sz(m);
|
|
}
|
|
|
|
static inline u32 msg_type(struct tipc_msg *m)
|
|
{
|
|
return msg_bits(m, 1, 29, 0x7);
|
|
}
|
|
|
|
static inline u32 msg_direct(struct tipc_msg *m)
|
|
{
|
|
return (msg_type(m) == TIPC_DIRECT_MSG);
|
|
}
|
|
|
|
static inline u32 msg_named(struct tipc_msg *m)
|
|
{
|
|
return (msg_type(m) == TIPC_NAMED_MSG);
|
|
}
|
|
|
|
static inline u32 msg_mcast(struct tipc_msg *m)
|
|
{
|
|
return (msg_type(m) == TIPC_MCAST_MSG);
|
|
}
|
|
|
|
static inline u32 msg_connected(struct tipc_msg *m)
|
|
{
|
|
return (msg_type(m) == TIPC_CONN_MSG);
|
|
}
|
|
|
|
static inline u32 msg_errcode(struct tipc_msg *m)
|
|
{
|
|
return msg_bits(m, 1, 25, 0xf);
|
|
}
|
|
|
|
static inline u32 msg_prevnode(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 3);
|
|
}
|
|
|
|
static inline u32 msg_origport(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 4);
|
|
}
|
|
|
|
static inline u32 msg_destport(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 5);
|
|
}
|
|
|
|
static inline u32 msg_mc_netid(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 5);
|
|
}
|
|
|
|
static inline u32 msg_orignode(struct tipc_msg *m)
|
|
{
|
|
if (likely(msg_short(m)))
|
|
return msg_prevnode(m);
|
|
return msg_word(m, 6);
|
|
}
|
|
|
|
static inline u32 msg_destnode(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 7);
|
|
}
|
|
|
|
static inline u32 msg_nametype(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 8);
|
|
}
|
|
|
|
static inline u32 msg_nameinst(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 9);
|
|
}
|
|
|
|
static inline u32 msg_namelower(struct tipc_msg *m)
|
|
{
|
|
return msg_nameinst(m);
|
|
}
|
|
|
|
static inline u32 msg_nameupper(struct tipc_msg *m)
|
|
{
|
|
return msg_word(m, 10);
|
|
}
|
|
|
|
static inline char *msg_options(struct tipc_msg *m, u32 *len)
|
|
{
|
|
u32 pos = msg_bits(m, 1, 16, 0x7);
|
|
|
|
if (!pos)
|
|
return 0;
|
|
pos = (pos * 4) + 28;
|
|
*len = msg_hdr_sz(m) - pos;
|
|
return (char *)&m->hdr[pos/4];
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|