From e6827a81f3c4318ab54f9cf8c1461677028babd5 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Tue, 25 Jun 2019 01:32:43 +0200
Subject: [PATCH] eth tx: set net_ctrl.start_tx on sending

---
 src/eth/tx.rs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/eth/tx.rs b/src/eth/tx.rs
index e76bbce..99dca4e 100644
--- a/src/eth/tx.rs
+++ b/src/eth/tx.rs
@@ -97,9 +97,12 @@ pub struct PktRef<'a> {
 impl<'a> Drop for PktRef<'a> {
     fn drop(&mut self) {
         self.entry.word1.modify(|_, w| w.used(false));
-        self.regs.net_ctrl.modify(|_, w|
-            w.tx_en(true)
-        );
+        if ! self.regs.tx_status.read().tx_go() {
+            println!("tx start_tx");
+            self.regs.net_ctrl.modify(|_, w|
+                                      w.start_tx(true)
+            );
+        }
     }
 }