[sccp] Make the bitfields work on big endian machines too
* Use the endian.h to fogure out for which endianess we are
building and then use the bitfields in reverse order
diff --git a/openbsc/include/sccp/sccp_types.h b/openbsc/include/sccp/sccp_types.h
index 9310a6b..42fda96 100644
--- a/openbsc/include/sccp/sccp_types.h
+++ b/openbsc/include/sccp/sccp_types.h
@@ -24,6 +24,8 @@
#ifndef SCCP_TYPES_H
#define SCCP_TYPES_H
+#include <endian.h>
+
/* Table 1/Q.713 - SCCP message types */
enum sccp_message_types {
SCCP_MSG_TYPE_CR = 1,
@@ -87,11 +89,19 @@
};
struct sccp_called_party_address {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
u_int8_t point_code_indicator : 1,
ssn_indicator : 1,
global_title_indicator : 4,
routing_indicator : 1,
reserved : 1;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ u_int8_t reserved : 1,
+ routing_indicator : 1,
+ global_title_indicator : 4,
+ ssn_indicator : 1,
+ point_code_indicator : 1;
+#endif
u_int8_t data[0];
} __attribute__((packed));
@@ -100,8 +110,13 @@
/* Figure 6/Q.713 */
struct sccp_signalling_point_code {
u_int8_t lsb;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
u_int8_t msb : 6,
reserved : 2;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ u_int8_t reserved : 2,
+ msb : 6;
+#endif
} __attribute__((packed));
/* SSN == subsystem number */
@@ -137,8 +152,13 @@
};
struct sccp_global_title {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
u_int8_t nature_of_addr_ind : 7,
odd_even : 1;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ u_int8_t odd_even : 1,
+ nature_of_addr_ind : 7;
+#endif
u_int8_t data[0];
} __attribute__((packed));