X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FModules%2FIPStack%2Fbuffer.c;fp=KernelLand%2FModules%2FIPStack%2Fbuffer.c;h=0048420ee736e2be8d98bae33e2aa863319b4724;hb=d45d4025353e79b7986edbd90c21d849eb61931e;hp=b8462e60a238d78f0ca39cb0d3e50e3c1508a22d;hpb=736648a7ef1d4ef09a0837c2bfebf8a2a20bd7e2;p=tpg%2Facess2.git

diff --git a/KernelLand/Modules/IPStack/buffer.c b/KernelLand/Modules/IPStack/buffer.c
index b8462e60..0048420e 100644
--- 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;
 	}
 }