fw/nethelp.h (902aa40) - mips_sys · BlinkenArea

nethelp.h

/* MIPS I system
 * Copyright 2011-2012 Stefan Schuermans <stefan@blinkenarea.org>
 * Copyleft GNU public license V2 or later
 *          http://www.gnu.org/copyleft/gpl.html
 */

#ifndef NETHELP_H
#define NETHELP_H

// byte order
#define ntohs(n) (((unsigned short)(n) & 0xFF00) >> 8 | \
                  ((unsigned short)(n) & 0x00FF) << 8)
#define htons(h) (((unsigned short)(h) & 0xFF00) >> 8 | \
                  ((unsigned short)(h) & 0x00FF) << 8)
#define ntohl(n) (((unsigned long)(n) & 0xFF000000) >> 24 | \
                  ((unsigned long)(n) & 0x00FF0000) >> 8 | \
                  ((unsigned long)(n) & 0x0000FF00) << 8 | \
                  ((unsigned long)(n) & 0x000000FF) << 24)
#define htonl(h) (((unsigned long)(h) & 0xFF000000) >> 24 | \
                  ((unsigned long)(h) & 0x00FF0000) >> 8 | \
                  ((unsigned long)(h) & 0x0000FF00) << 8 | \
                  ((unsigned long)(h) & 0x000000FF) << 24)

// comparing MACs and IPs
#define mac_eq(a, b) ((a)[0] == (b)[0] && (a)[1] == (b)[1] && \
                      (a)[2] == (b)[2] && (a)[3] == (b)[3] && \
                      (a)[4] == (b)[4] && (a)[5] == (b)[5])
#define ip_eq(a, b) ((a)[0] == (b)[0] && (a)[1] == (b)[1] && \
                     (a)[2] == (b)[2] && (a)[3] == (b)[3])

// copying MACs and IPs
#define mac_cpy(dest, src) ((dest)[0] = (src)[0], (dest)[1] = (src)[1], \
                            (dest)[2] = (src)[2], (dest)[3] = (src)[3], \
                            (dest)[4] = (src)[4], (dest)[5] = (src)[5])
#define ip_cpy(dest, src) ((dest)[0] = (src)[0], (dest)[1] = (src)[1], \
                           (dest)[2] = (src)[2], (dest)[3] = (src)[3])

#endif // #ifndef NETHELP_H

mips_sys

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