edge: Add unified decoder methods for GPRS/EGPRS

This commit adds new RLC block decoder functions that support both
GPRS and EGPRS. The code path is selected based on the value of the
GprsCodingScheme cs object.

- rlc_parse_ul_data_header
        parses the header of an RLC data block including the E and FBI/TI
        flags (currently supported CS-1 - CS-4, MCS-1 - MCS-4).

- rlc_copy_to_aligned_buffer
        copies an RLC data unit to a byte aligned buffer and returns
        the unit's length.

- rlc_get_data_aligned
        is a convenience wrapper around rlc_copy_to_aligned_buffer
        that avoids copying if the data unit is already byte aligned.

Sponsored-by: On-Waves ehf

1 files changed, 2 insertions, 0 deletions

diff --git a/src/rlc.cpp b/src/rlc.cpp
index 42b602cb..9f5c61d9 100644
--- a/src/rlc.cpp
+++ b/src/rlc.cpp
@@ -20,6 +20,8 @@
 #include "bts.h"
 #include "gprs_debug.h"
 
+#include <errno.h>
+
 extern "C" {
 #include <osmocom/core/utils.h>
 }