/* * 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-*- * * 1.1.1.1 * 1999/04/16 01:34:27 * * * 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 */