From a12d3991e5f7983d0017dbf6fa2e4ad46944cd64 Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Thu, 15 Jul 2021 18:12:57 +0200
Subject: [PATCH] core/icmp/LiteEthICMPTX: Move datapath outside of FSM (minor
 logic optimization).

---
 liteeth/core/icmp.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/liteeth/core/icmp.py b/liteeth/core/icmp.py
index d9d7cc2..d9817ab 100644
--- a/liteeth/core/icmp.py
+++ b/liteeth/core/icmp.py
@@ -46,11 +46,14 @@ class LiteEthICMPTX(Module):
                 NextState("SEND")
             )
         )
-        fsm.act("SEND",
-            packetizer.source.connect(source),
+        self.comb += [
+            packetizer.source.connect(source, omit={"valid", "ready"}),
             source.length.eq(sink.length + icmp_header.length),
             source.protocol.eq(icmp_protocol),
             source.ip_address.eq(sink.ip_address),
+        ]
+        fsm.act("SEND",
+            packetizer.source.connect(source, keep={"valid", "ready"}),
             If(source.valid & source.last & source.ready,
                 NextState("IDLE")
             )