| /* |
| * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved. |
| * |
| * This software may be freely used, copied, modified, and distributed |
| * provided that the above copyright notice is preserved in all copies of the |
| * software. |
| */ |
| |
| /* -*-C-*- |
| * |
| * $Revision$ |
| * $Date$ |
| * |
| * |
| * Project: ANGEL |
| * |
| * Title: Private header for channels implementations |
| */ |
| |
| #ifndef angel_chanpriv_h |
| #define angel_chanpriv_h |
| |
| /* |
| * This describes the internal structure and flags for a channels packet. |
| */ |
| |
| /* byte positions within channel packet */ |
| #define CF_CHANNEL_BYTE_POS 0 |
| #define CF_HOME_SEQ_BYTE_POS 1 |
| #define CF_OPPO_SEQ_BYTE_POS 2 |
| #define CF_FLAGS_BYTE_POS 3 |
| #define CF_DATA_BYTE_POS 4 |
| |
| /* flags for FLAGS field */ |
| #define CF_RELIABLE (1 << 0) /* use reliable channels protocol */ |
| #define CF_RESEND (1 << 1) /* this is a renegotiation packet */ |
| #define CF_HEARTBEAT (1 << 2) /* heartbeat packet - prod target into sync */ |
| |
| /* byte positions within buffer */ |
| #define CB_LINK_BYTE_POS 0 /* the link pointer */ |
| #define CB_CHAN_HEADER_BYTE_POS 4 /* the channel frame starts here */ |
| |
| /* macro to get buffer position of packet component */ |
| #define CB_PACKET(x) (CB_CHAN_HEADER_BYTE_POS + (x)) |
| |
| /* byte offset of packet data within buffer */ |
| #define CB_CHAN_DATA_BYTE_POS (CB_PACKET(CF_DATA_BYTE_POS)) |
| |
| /* access the link in a buffer, where b is byte pointer to buffer */ |
| #define CB_LINK(b) ((p_Buffer)(&(b)[0])) |
| |
| #define invalidChannelID(chan) (((int)(chan)) < 0 || \ |
| (chan) >= CI_NUM_CHANNELS) |
| |
| #endif /* ndef angel_chanpriv_h */ |
| |
| /* EOF chanpriv.h */ |
