From 53b932c6f960b7f4a9bd2171cdfd630304f15fd8 Mon Sep 17 00:00:00 2001
From: Ian Kelling <iank@fsf.org>
Date: Tue, 8 Feb 2022 18:20:58 -0500
Subject: [PATCH] fixes, remove cruft to try to fix unstable wireless

---
 wrt-setup       |   2 +-
 wrt-setup-local | 151 ++++++++++++++++++++++++++++--------------------
 2 files changed, 89 insertions(+), 64 deletions(-)

diff --git a/wrt-setup b/wrt-setup
index 0d856ad..1e0d636 100755
--- a/wrt-setup
+++ b/wrt-setup
@@ -70,7 +70,7 @@ fi
 
 echo "$0: h=$h"
 # todo: ecdsa key not working with dropbear
-cat ~/.ssh/{h,home}.pub | ssh $h dd of=/etc/dropbear/authorized_keys 2>/dev/null
+cat ~/.ssh/{h,hrsa,home}.pub | ssh $h dd of=/etc/dropbear/authorized_keys 2>/dev/null
 scp /a/work/libremanage/libremanage /a/bin/fai/wrt-init /a/bin/fai/wrt-setup-local /a/bin/cedit/cedit $h:/usr/bin
 # relay is built for openwrt 18.06.2, r7676-cddd7b4c77
 
diff --git a/wrt-setup-local b/wrt-setup-local
index cb8b940..cda21df 100755
--- a/wrt-setup-local
+++ b/wrt-setup-local
@@ -22,7 +22,7 @@ trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 usage() {
   cat <<EOF
-usage: ${0##*/} [-h] [-t 2|3|test|client] [-m WIRELESS_MAC]
+usage: ${0##*/} [-h] [-t 2|3|test|client] [-m WIRELESS_MAC] [hostname]
 setup my router in general: dhcp, dns, etc.
 
 Type 2 or 3 is for setting up a backup device, there are two kinds so
@@ -38,17 +38,6 @@ EOF
 }
 
 
-secrets=false
-if [[ -e /root/router-secrets ]]; then
-  secrets=true
-  source /root/router-secrets
-fi
-rmac=$(cat /sys/class/net/eth0/address)
-if $secrets; then
-  hostname=${rhost[$rmac]}
-fi
-: ${hostname:=wrt}
-
 
 zblock=false
 if [[ -e /root/zblock ]]; then
@@ -103,10 +92,24 @@ while getopts hm:t:yz opt; do
 done
 shift "$((OPTIND-1))"   # Discard the options and sentinel --
 
+if [[ $1 ]]; then
+  h=$1
+  hostname=$h
+else
+  h=cmc
+  hostname=$h
+fi
+
+secrets=false
+if [[ -e /root/router-secrets ]]; then
+  secrets=true
+  source /root/router-secrets
+fi
+
 if [[ ! $mac ]] && ! $test && $secrets; then
   # if we wanted to increment it
   #mac=${mac:0: -1}$((${mac: -1} + 2))
-  mac=${rwmac[$rmac]}
+  mac=${rwmac[$h]}
 fi
 
 if (( $# != 0 )); then
@@ -217,14 +220,14 @@ fi
 if $test; then
   ssid="gnuv3"
 elif $secrets; then
-  ssid=${rssid[$rmac]}
+  ssid=${rssid[$h]}
 fi
 
 : ${ssid:=librecmc}
 
 
 if $secrets; then
-  key=${rkey[$rmac]}
+  key=${rkey[$h]}
 fi
 : ${key:=pictionary49}
 
@@ -307,7 +310,11 @@ EOF
 
 else
   # these are the defaults
-  uset network.lan.gateway ''
+
+  # this is not needed unless switching from the above condition.
+  # disabling just to debug
+  #uset network.lan.gateway ''
+
   uset network.wan.proto dhcp
   uset network.wan6.proto dhcpv6
   /etc/init.d/dnsmasq start
@@ -321,13 +328,13 @@ wireless_restart=false
 
 if $client; then
   uset wireless.default_radio0.network 'wwan'
-  uset wireless.default_radio0.ssid ${rclientssid[$rmac]}
+  uset wireless.default_radio0.ssid ${rclientssid[$h]}
   uset wireless.default_radio0.encryption 'psk2'
   uset wireless.default_radio0.device 'radio0'
   uset wireless.default_radio0.mode 'sta'
-  uset wireless.default_radio0.bssid ${rclientbssid[$rmac]}
+  uset wireless.default_radio0.bssid ${rclientbssid[$h]}
   # todo: look into whether 5g network is available.
-  uset wireless.default_radio0.key ${rclientkey[$rmac]}
+  uset wireless.default_radio0.key ${rclientkey[$h]}
   uset wireless.radio0.disabled false
   uset wireless.radio1.disabled true
 else
@@ -346,8 +353,25 @@ else
   done
 fi
 
-
-
+if grep '^OPENWRT_BOARD="mvebu/cortexa9"' /etc/os-release &>/dev/null; then
+  # todo, I also enabled irqbalance, didnt script it though
+  # https://forum.openwrt.org/t/wrt1900acs-wifi-issue-after-upgrade-from-19-07-to-21-02-vacuum-cleaner-legacy-rate-support/113311/28
+  cat >/etc/rc.local <<'EOF'
+echo "0" >> /sys/kernel/debug/ieee80211/phy0/mwlwifi/tx_amsdu
+echo "0" >> /sys/kernel/debug/ieee80211/phy1/mwlwifi/tx_amsdu
+exit 0
+EOF
+  chmod +x /etc/rc.local
+  /etc/rc.local
+  uset wireless.radio0.disassoc_low_ack 0
+  uset wireless.radio1.disassoc_low_ack 0
+fi
+case $HOSTNAME in
+  cmc)
+    # found with https://openwrt.org/docs/guide-user/network/wifi/iwchan
+    uset wireless.radio0.channel 11
+    ;;
+esac
 
 
 # usb, screen, relay are for libremanage
@@ -355,10 +379,12 @@ fi
 #
 # relay package temporarily disabled
 # /root/relay_1.0-1_mips_24kc.ipk
-v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
-  tcpdump openvpn-openssl adblock libusb-compat \
-  screen kmod-usb-serial-cp210x kmod-usb-serial-ftdi rsync\
-  unbound-daemon unbound-checkconf
+v pi tcpdump screen rsync unbound-daemon unbound-checkconf \
+  kmod-usb-storage block-mount kmod-fs-ext4
+# nfs-kernel-server \
+  #   openvpn-openssl adblock libusb-compat \
+  #   kmod-usb-serial-cp210x kmod-usb-serial-ftdi \
+
 
 cat >/etc/libremanage.conf <<EOF
 ${libremanage_host}_type=switch
@@ -495,6 +521,8 @@ config wireguard_wg0 'wgclient'
  list allowed_ips 'fdfd::2/64'
 EOF
 
+# Need to reload before we change dnsmasq to give out
+# static ips in our new range.
 if $network_restart; then
   v /etc/init.d/network reload
 fi
@@ -732,7 +760,6 @@ config rule
  option dest_port        8448
  option proto            tcp
 
-
 config redirect
  option name syncthing
  option src              wan
@@ -745,6 +772,17 @@ config rule
  option dest_port        22001
 
 
+#config redirect
+# option name i2p
+# option src              wan
+# option src_dport        $i2pport
+# option dest_ip          $l.178
+# option dest             lan
+#config rule
+# option src              wan
+# option target           ACCEPT
+# option dest_port        $i2pport
+
 config rule
  option name ssh-ipv6
  option src wan
@@ -811,26 +849,9 @@ firewall-cedit || firewall_restart=true
 
 
 
-cedit /etc/hosts <<EOF
+cedit /etc/hosts <<EOF ||:
 127.0.1.1 $hostname
 EOF
-# not sure this case statement is needed
-case $hostname in
-  cmc)
-    cedit host /etc/hosts <<EOF
-$l.1 $hostname
-# 127.0.0.1 www.youtube.com
-# 127.0.0.1 googlevideo.com
-# 127.0.0.1 youtu.be
-# 127.0.0.1 youtube-nocookie.com
-# 127.0.0.1 youtube.com
-# 127.0.0.1 youtube.googleapis.com
-# 127.0.0.1 youtubei.googleapis.com
-# 127.0.0.1 ytimg.com
-# 127.0.0.1 ytimg.l.google.com
-EOF
-    ;;
-esac
 
 
 #mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
@@ -847,7 +868,8 @@ uset dhcp.@dnsmasq[0].local
 # if you delete it, it goes back to the default. this seems
 # to be a decent workaround.
 # todo: setup /etc/resolv.conf to point to 127.0.0.1
-uset dhcp.@dnsmasq[0].resolvfile /dev/null
+# later note: disabled, I dunno why I set this.
+# uset dhcp.@dnsmasq[0].resolvfile /dev/null
 
 # if dnsmasq happens to not send out a dns server,
 # odhcpd will send one out like this:
@@ -857,8 +879,11 @@ uset dhcp.@dnsmasq[0].resolvfile /dev/null
 # so just stop this thing.
 # note: tried this, it didn't do anything:
 # uset dhcp.@odhcpd[0].dns 10.2.0.1
-/etc/init.d/odhcpd stop
-/etc/init.d/odhcpd disable
+
+# iank, disabled while debugging.
+#/etc/init.d/odhcpd stop
+#/etc/init.d/odhcpd disable
+
 # todo: make the above conditional on which server this is.
 
 # avoid errors in log. current isp doesnt have ipv6
@@ -968,17 +993,17 @@ if $restart_unbound; then
 fi
 
 
-# disabled for now. i want to selectively enable it
-# for specific hosts.
-if [[ $(uci get adblock.global.adb_enabled) != 0 ]]; then
-  v uci set adblock.global.adb_enabled=0
-  uci commit adblock
-  /etc/init.d/adblock restart
-fi
-# https://github.com/openwrt/packages/tree/master/net/adblock/files
-cat >/etc/crontabs/root <<'EOF'
-0 06 * * *    /etc/init.d/adblock reload
-EOF
+# # disabled for now. i want to selectively enable it
+# # for specific hosts.
+# if [[ $(uci get adblock.global.adb_enabled) != 0 ]]; then
+#   v uci set adblock.global.adb_enabled=0
+#   uci commit adblock
+#   /etc/init.d/adblock restart
+# fi
+# # https://github.com/openwrt/packages/tree/master/net/adblock/files
+# cat >/etc/crontabs/root <<'EOF'
+# 0 06 * * *    /etc/init.d/adblock reload
+# EOF
 
 
 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
@@ -1086,11 +1111,11 @@ dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 # template
 # dhcp-host=,$l.,
 
-# Just leave the tftp server up even if we aren't doing pxe boot.
-# It has no sensitive info.
-enable-tftp=br-lan
-tftp-root=/mnt/usb/tftpboot
-dhcp-optsfile=/etc/dnsmasq-dhcpopts.conf
+# uncomment to do tftpboot. openwrt snapshot from 2022-01, seems like it cant
+# access /mnt/usb/tftpboot due to some jail or sandbox thing
+#enable-tftp=br-lan
+#tftp-root=/mnt/usb/tftpboot
+#dhcp-optsfile=/etc/dnsmasq-dhcpopts.conf
 
 #log-queries=extra
 EOF
-- 
2.30.2