From 98877fe432adc85d54608c85b9efbc8531fcda29 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 10 Sep 2019 11:35:08 +0200
Subject: [rootfs-stage31] More brain damage trying to get stubborn NICs to
 work

---
 .../rootfs-stage31/data/inc/network.functions      |  8 ++++-
 .../rootfs-stage31/data/inc/setup_network_retry    | 36 ++++++++++++++++------
 2 files changed, 34 insertions(+), 10 deletions(-)

diff --git a/core/rootfs/rootfs-stage31/data/inc/network.functions b/core/rootfs/rootfs-stage31/data/inc/network.functions
index a027ea63..a9edb5bc 100644
--- a/core/rootfs/rootfs-stage31/data/inc/network.functions
+++ b/core/rootfs/rootfs-stage31/data/inc/network.functions
@@ -5,6 +5,7 @@ wait_for_iface() {
 	local TIMEOUT=10
 	local state laststate current relax
 	local want=
+	local ret=1 # error
 	[ -n "$2" ] && TIMEOUT="$2"
 	echo -n "Waiting ${TIMEOUT}s for interface $DEVICE: "
 	TIMEOUT="$(( TIMEOUT * 2 ))"
@@ -22,9 +23,13 @@ wait_for_iface() {
 			state="${state}$( cat "/sys/class/net/${DEVICE}/carrier" 2> /dev/null )"
 			[ "$state" != "$laststate" ] && echo -n "[$state]"
 			laststate="$state"
-			[ "$state" = "$want" ] && break
+			if [ "$state" = "$want" ]; then
+				ret=0
+				break
+			fi
 			if [ "$current" -gt "$relax" ] && [ "$state" = "unknown1" ]; then
 				echo -n "better than nothing"
+				ret=0
 				break
 			fi
 			current=$(( current + 1 )) # don't wait forever, the pcnet iface of vmware will never be "up" although it's working
@@ -42,5 +47,6 @@ wait_for_iface() {
 		echo -n "... no operstate or carrier, let's hope for the best..."
 	fi
 	echo
+	return "$ret"
 }
 true
diff --git a/core/rootfs/rootfs-stage31/data/inc/setup_network_retry b/core/rootfs/rootfs-stage31/data/inc/setup_network_retry
index f2a53783..98701e91 100644
--- a/core/rootfs/rootfs-stage31/data/inc/setup_network_retry
+++ b/core/rootfs/rootfs-stage31/data/inc/setup_network_retry
@@ -6,28 +6,46 @@ for i in 1 2 3 4 5 6 7 8; do
 	echo "<$i> Try to fix broken network"
 	echo -n "Take interface $IFACE down .. "
 
+	ip link set dev "$BRIDGE" down
 	ip link set dev "$IFACE" down
-	usleep 10000
+	usleep 100000
 
 	echo "and up again.."
 	ip link set dev "$IFACE" up
-	ip link set dev "$BRIDGE" up
 	usleep 100000
 
-	wait_for_iface "$IFACE" 20
+	wait_for_iface "$IFACE" "$(( 15 + i * 2 ))"
+	retval=$?
+	ip link set dev "$BRIDGE" up
+	if [ "$retval" -eq 0 ] && [ "$i" -gt 4 ] && [ -n "$CLIENTIP" ] && [ -n "$GATEWAY" ]; then
+		echo "....."
+		usleep 100000
+		echo "Checking if static IP config works...."
+		if ping -c1 -w2 "$GATEWAY" &> /dev/null || ping -c1 -w2 "$SERVERIP" &> /dev/null; then
+			echo "apparently so."
+			echo "Trying to boot without DHCP config, YMMV!"
+			sleep 3
+			RET=0
+			break
+		fi
+		echo "...nope..."
+	fi
+	wait_for_iface "$BRIDGE" 10
+	usleep 100000
 
-	udhcpc $PARAM -O ntpsrv -O domain -O search -t 6 -T 4 -A 5 -s "/inc/udhcpc-trigger" -f -n -q -i "$BRIDGE"
+	udhcpc $PARAM -O ntpsrv -O domain -O search -t "$(( 2 + i / 2 ))" -T "$(( 4 + i ))" -s "/inc/udhcpc-trigger" -f -n -q -i "$BRIDGE" \
+		|| udhcpc $PARAM -O ntpsrv -O domain -O search -t "$(( 2 + i / 2 ))" -T "$(( 4 + i ))" -s "/inc/udhcpc-trigger" -f -n -q -i "$BRIDGE"
+	RET="$?"
 
-	if [ $? -eq 0 ]; then
+	if [ "$RET" -eq 0 ]; then
 		echo "Finally fixed IP config. Continue boot."
-		RET=0
 		break
-	else
-		RET=1
 	fi
 done
 
-[ $RET -gt 0 ] && drop_shell "Something is really broken.. Please check your network cable and reset your computer."
+[ $RET -gt 0 ] && drop_shell "Something is really broken.. Please check your network cable and reset your computer.
+$(ip a)
+$(ip r s)"
 
 # create correct return value
 [ $RET -eq 0 ]
-- 
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