Remove BPF_LL_OFF usage

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

src/cc/b_frontend_action.cc

@@ -202,7 +202,7 @@ bool BTypeVisitor::VisitImplicitCastExpr(ImplicitCastExpr *E) {
           uint64_t ofs = C.getFieldOffset(F);
           uint64_t sz = F->isBitField() ? F->getBitWidthValue(C) : C.getTypeSize(F->getType());
           string base = rewriter_.getRewrittenText(SourceRange(Base->getLocStart(), Base->getLocEnd()));
-          string text = "bpf_dext_pkt(skb, _parse_base + (u64)" + base + "+" + to_string(ofs >> 3)
+          string text = "bpf_dext_pkt(skb, (u64)" + base + "+" + to_string(ofs >> 3)
               + ", " + to_string(ofs & 0x7) + ", " + to_string(sz) + ")";
           rewriter_.ReplaceText(SourceRange(E->getLocStart(), E->getLocEnd()), text);
         }

src/cc/bpf_helpers.h

@@ -47,7 +47,6 @@ struct _name##_table_t _name
   BPF_EXPORT(name) int _##name(struct __sk_buff *skb)
 #define BEGIN(next) \
   u64 _parse_cursor = 0; \
-  u64 _parse_base = skb->pkt_type == PACKET_OUTGOING ? 0 : BPF_LL_OFF; \
   goto next
 
 #define PROTO(name) \