Modules/IPStack - Fixed bugs in IPStack_Buffer_GetBuffer

[tpg/acess2.git] / KernelLand / Modules / IPStack / buffer.c

diff --git a/KernelLand/Modules/IPStack/buffer.c b/KernelLand/Modules/IPStack/buffer.c
index b8462e6..0048420 100644 (file)
--- a/KernelLand/Modules/IPStack/buffer.c
+++ b/KernelLand/Modules/IPStack/buffer.c
@@ -147,7 +147,7 @@ int IPStack_Buffer_GetBuffer(tIPStackBuffer *Buffer, int Index, size_t *Length,
                return -1;
        }
 
-       if( Index > Buffer->nSubBuffers )
+       if( Index >= Buffer->nSubBuffers )
        {
                // Appended buffers
                Index -= Buffer->nSubBuffers;
@@ -166,11 +166,12 @@ int IPStack_Buffer_GetBuffer(tIPStackBuffer *Buffer, int Index, size_t *Length,
        }
        else
        {
-               Index = Buffer->nSubBuffers - Index;
+                int    rv = Index + 1;
+               Index = Buffer->nSubBuffers - Index - 1;
                // Prepended buffers
                *DataPtr = Buffer->SubBuffers[Index].Data;
                *Length = Buffer->SubBuffers[Index].PreLength;
-               return Buffer->nSubBuffers - (Index - 1);
+               return rv;
        }
 }