zhhyu7 commented on code in PR #9058:
URL: https://github.com/apache/nuttx/pull/9058#discussion_r1173663662
##########
include/netinet/ip.h:
##########
@@ -32,6 +32,33 @@
* Public Type Definitions
****************************************************************************/
+#define IPVERSION 4 /* IP version number */
+#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
+
+struct iphdr
+{
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned int ihl:4;
+ unsigned int version:4;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ unsigned int version:4;
+ unsigned int ihl:4;
Review Comment:
glibc and musl both define this bit fields, so many applications use this
definition, and if we compile those applications directly in NuttX's
environment, we will get a compile error. this structure is only for tripartite
library compatibility and is not used by NuttX itself
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