RTEMS Porting Guide
In a networked environment, each program communicating must agree on the
format of data passed between the various systems in the networked
application. Routines such as ntohl()
and htonl() are used to convert
between the common network format and the native format used on this
particular host system. Although RTEMS has a portable implementation of
these endian conversion routines, it is often possible to implement these
routines more efficiently in a processor specific fashion.
The CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES is set to TRUE when the port
provides its own implementation of the network to host and host to network
family of routines. This set of routines include the following:
ntohl()
ntohs()
htonl()
htons()
The following example illustrates how this macro should be set when the generic, portable implementation of this family of routines is to be used by this port:
#define CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES FALSE
RTEMS Porting Guide
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