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442 lines
14 KiB
Bash
442 lines
14 KiB
Bash
4 years ago
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#!/bin/sh
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# Copyright (c) 2017-2018 Qualcomm Technologies, Inc.
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# All Rights Reserved.
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# Confidential and Proprietary - Qualcomm Technologies, Inc.
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#
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# 2015-2016 Qualcomm Atheros, Inc.
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# All Rights Reserved.
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# Qualcomm Atheros Confidential and Proprietary.
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GWMON_DEBUG_OUTOUT=0
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GWMON_SWITCH_CONFIG_COMMAND=swconfig
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GWMON_MODE_NO_CHANGE=0
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GWMON_MODE_CAP=1
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GWMON_MODE_NON_CAP=2
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GWMON_KERNEL="4.4.60"
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GWMON_PLATFORM=QCA
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config_load 'repacd'
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config_get_bool gwmon_cfg config 'cfg80211_enable' '0'
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if [ "$gwmon_cfg" == "1" ]; then
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REPACD_CFG80211=-cfg80211
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else
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REPACD_CFG80211=
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fi
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. /lib/functions.sh
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. /lib/functions/hyfi-iface.sh
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. /lib/functions/hyfi-network.sh
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. /lib/functions/repacd-wifimon.sh
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prev_gw_link='' router_detected=0 gw_iface="" gw_switch_port=""
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managed_network='' switch_iface="" vlan_group="" switch_ports=''
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cpu_portmap=0
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eswitch_support="0"
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gw_mac=""
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last_hop_count=255
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IS_GW_REACHABLE=0
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GW_NOT_REACHABLE_TIMESTAMP=0
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#Check for Platform & Kernel version
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dut_kernel=$(uname -a | awk '{print $3}')
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dut_platform=$(grep -w DISTRIB_RELEASE /etc/openwrt_release | awk -F "='" '{print $2}' | awk '{gsub(/.{3}/,"& ")}1' | awk '{print $1}')
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# Emit a log message
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# input: $1 - level: the symbolic log level
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# input: $2 - msg: the message to log
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__gwmon_log() {
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local stderr=''
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if [ "$GWMON_DEBUG_OUTOUT" -gt 0 ]; then
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stderr='-s'
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fi
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logger $stderr -t repacd.gwmon -p "user.$1" "$*"
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}
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# Emit a log message at debug level
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# input: $1 - msg: the message to log
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__gwmon_debug() {
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__gwmon_log 'debug' "$1"
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}
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# Emit a log message at info level
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# input: $1 - msg: the message to log
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__gwmon_info() {
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__gwmon_log 'info' "$1"
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}
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# Emit a log message at warning level
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# input: $1 - msg: the message to log
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__gwmon_warn() {
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__gwmon_log 'warn' "$1"
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}
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# Obtain a timestamp from the system.
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#
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# These timestamps will be monontonically increasing and be unaffected by
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# any time skew (eg. via NTP or manual date commands).
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#
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# output: $1 - the timestamp as an integer (with any fractional time truncated)
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__gwmon_get_timestamp() {
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timestamp=$(cut -d' ' -f1 < /proc/uptime | cut -d. -f 1)
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eval "$1=$timestamp"
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}
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__gwmon_find_switch() {
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local vlan_grp
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#Ignore value returned by eswitch_support in repacd. It is to be used by hyd only.
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__hyfi_get_switch_iface switch_iface eswitch_support
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if [ -n "$switch_iface" ]; then
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$GWMON_SWITCH_CONFIG_COMMAND dev switch0 set flush_arl 2>/dev/null
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vlan_grp="$(echo $switch_iface | awk -F. '{print $2}' 2>/dev/null)"
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fi
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if [ -z "$vlan_grp" ]; then
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vlan_group="1"
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else
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vlan_group="$vlan_grp"
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fi
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}
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__gwmon_get_switch_ports() {
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local config="$1"
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local vlan_group="$2"
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local ports vlan cpu_port __cpu_portmap
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config_get vlan "$config" vlan
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config_get ports "$config" ports
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[ ! "$vlan" = "$vlan_group" ] && return
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cpu_port=$(echo "$ports" | awk '{print $1}')
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ports=$(echo "$ports" | sed "s/$cpu_port //g")
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eval "$3='$ports'"
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cpu_port=$(echo "$cpu_port" | awk -Ft '{print $1}')
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case $cpu_port in
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0) __cpu_portmap=0x01;;
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1) __cpu_portmap=0x02;;
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2) __cpu_portmap=0x04;;
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3) __cpu_portmap=0x08;;
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4) __cpu_portmap=0x10;;
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5) __cpu_portmap=0x20;;
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6) __cpu_portmap=0x40;;
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7) __cpu_portmap=0x80;;
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esac
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eval "$4='$__cpu_portmap'"
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}
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__gwmon_set_hop_count() {
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local config=$1
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local iface mode
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config_get mode "$config" mode
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config_get iface "$config" ifname
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if [ "$mode" = "ap" ]; then
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__gwmon_info "Setting intf [$iface] hop count $2"
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if [ -z $REPACD_CFG80211 ]; then
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iwpriv "$iface" set_whc_dist "$2"
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else
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cfg80211tool "$iface" set_whc_dist "$2"
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fi
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fi
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}
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# Check GW reachability over Ethernet backhaul,
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# Set hop count correctly to prevent isolated island condition
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__gwmon_prevent_island_loop() {
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local retries=3
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local gw_ip next_hop_count=255
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while [ "$retries" -gt 0 ]; do
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gw_ip=$(route -n | grep ^0.0.0.0 | grep "br-$1" | awk '{print $2}')
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[ -z "$gw_ip" ] && break
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# Ping returns zero if at least one response was heard from the specified host
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if ping -W 2 "$gw_ip" -c1 > /dev/null; then
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__gwmon_debug "Ping to GW IP[$gw_ip] success"
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next_hop_count=1
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break
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else
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# no ping response was received, retry
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retries=$((retries -1))
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__gwmon_debug "Ping to GW IP[$gw_ip] failed ($retries retries left)"
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fi
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done
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if [ $last_hop_count -ne $next_hop_count ]; then
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__gwmon_info "Changing hop_count from $last_hop_count to $next_hop_count"
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config_load wireless
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config_foreach __gwmon_set_hop_count wifi-iface $next_hop_count
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last_hop_count=$next_hop_count
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fi
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}
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__gwmon_check_gwinterface() {
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local gw_iface_found=1
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local giface
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local siface
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# Check the inteface is the vlan of ether_iface
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giface=${1//.[0-9]*/}
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siface=${2//.[0-9]*/}
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if [ "$siface" = "$giface" ]; then
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eval "$3=$gw_iface_found"
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__gwmon_info "Both Switch and Gw Interface Match"
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else
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eval "$3=0"
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fi
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}
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# Check the link status of the interface connected to the gataway
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# returns: 0 if gateway is detected; non-zero if it is not
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__gwmon_check_gw_iface_link() {
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local ret
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local interf
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__gwmon_check_gwinterface $gw_iface $switch_iface interf
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if [ "$interf" -gt 0 ]; then
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local link_status
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# Before we check local link status, make sure gw_iface (eth) is up
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ret=$(ifconfig $gw_iface | grep "UP[A-Z' ']*RUNNING")
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__gwmon_info "Checking ifconfig $gw_iface is up and running, ret= $ret"
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[ -z "$ret" ] && prev_gw_link="down" && return 1
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for switch_port in $gw_switch_port;do
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if [ "$switch_port" = '0' ]; then
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continue
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fi
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link_status=$($GWMON_SWITCH_CONFIG_COMMAND dev switch0 port $gw_switch_port show | grep link | awk -F: '{print $NF}')
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done
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if [ ! "$link_status" = "down" ]; then
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# link is up
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if [ ! "$prev_gw_link" = "up" ]; then
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__gwmon_info "Link to GW UP"
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prev_gw_link="up"
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fi
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# Check if GW is reachable, set appropriate hop count to avoid isolated island condition
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__gwmon_prevent_island_loop $managed_network
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return 0
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fi
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else
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ret=$(ifconfig $gw_iface | grep "UP[A-Z' ']*RUNNING")
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[ -n "$ret" ] && return 0
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fi
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if [ ! "$prev_gw_link" = "down" ]; then
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__gwmon_info "Link to GW DOWN"
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prev_gw_link="down"
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fi
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return 1
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}
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# __gwmon_check_gateway
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# input: $1 1905.1 managed bridge
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# output: $2 Gateway interface
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# returns: 0 if gateway is detected; non-zero if not detected
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__gwmon_check_gateway() {
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local gw_ip gw_br_port __gw_iface
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local ether_ifaces_full ether_ifaces
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local ether_iface ret
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local interface_gw
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gw_ip=$(route -n | grep ^0.0.0.0 | grep "br-$1" | awk '{print $2}')
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[ -z "$gw_ip" ] && return 1
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if ping -W 2 "$gw_ip" -c1 > /dev/null; then
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if [ "$IS_GW_REACHABLE" -eq 0 ]; then
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__gwmon_info "GW ($gw_ip) reachable"
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fi
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IS_GW_REACHABLE=1
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GW_NOT_REACHABLE_TIMESTAMP=0
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else
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if [ "$IS_GW_REACHABLE" -eq 1 ]; then
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__gwmon_info "GW ($gw_ip) NOT reachable"
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fi
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IS_GW_REACHABLE=0
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if [ "$GW_NOT_REACHABLE_TIMESTAMP" -eq 0 ]; then
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__gwmon_get_timestamp GW_NOT_REACHABLE_TIMESTAMP
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fi
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fi
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gw_mac=$(grep -w "$gw_ip" /proc/net/arp | grep -w "$1" | awk '{print $4}')
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[ -z "$gw_mac" ] && return 1
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# Instead of using hyctl (which may not be installed if not running the
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# full Hy-Fi build), use brctl instead. One additional step of mapping
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# the port number to an interface name is needed though.
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gw_br_port=$(brctl showmacs "br-$1" | grep -i "$gw_mac" | awk '{print $1}')
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[ -z "$gw_br_port" ] && return 1
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__gw_iface=$(brctl showstp "br-$1" | grep \("$gw_br_port"\) | awk '{print $1}')
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[ -z "$__gw_iface" ] && return 1
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# Get all Ethernet interfaces
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hyfi_get_ether_ifaces "$1" ether_ifaces_full
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hyfi_strip_list "$ether_ifaces_full" ether_ifaces
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# Check if this interface belongs to our network
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for ether_iface in $ether_ifaces; do
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if [ "$ether_iface" = "$__gw_iface" ]; then
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gw_iface=$__gw_iface
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__gwmon_info "Detected Gateway on interface $gw_iface"
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__gwmon_check_gwinterface "$gw_iface" "$switch_iface" interface_gw
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if [ "$interface_gw" -gt 0 ]; then
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local portmap __gw_switch_port=99
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if [[ "$dut_kernel" = "$GWMON_KERNEL" && "$dut_platform" = "$GWMON_PLATFORM" ]]; then
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__gw_switch_port=$($GWMON_SWITCH_CONFIG_COMMAND dev switch0 get arl_table | grep -i "$gw_mac" | awk -F ":" '{print $1}' | awk '{print $2}')
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else
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portmap=$($GWMON_SWITCH_CONFIG_COMMAND dev switch0 get dump_arl | grep -i "$gw_mac" | grep -v $cpu_portmap | awk '{print $4}')
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case $portmap in
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0x01) __gw_switch_port=0;;
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0x02) __gw_switch_port=1;;
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0x04) __gw_switch_port=2;;
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0x08) __gw_switch_port=3;;
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0x10) __gw_switch_port=4;;
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0x20) __gw_switch_port=5;;
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0x40) __gw_switch_port=6;;
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0x80) __gw_switch_port=7;;
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esac
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fi
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if [ "$__gw_switch_port" -eq 99 ]; then
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__gwmon_warn "invalid port map $portmap"
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return 1
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fi
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gw_switch_port=$__gw_switch_port
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fi
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__repacd_wifimon_bring_iface_down $sta_iface_5g
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__repacd_wifimon_bring_iface_down $sta_iface_24g
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return 0
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fi
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done
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# also check the loop prevention code to see if it believes we have
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# an upstream facing Ethernet interface
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local num_upstream
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num_upstream=$(lp_numupstream)
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if [ "${num_upstream}" -gt 0 ]; then
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return 0
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fi
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return 1
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}
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# Determine if the GW is reachable and update the router_detected global
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# variable accordingly.
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__gwmon_update_router_detected() {
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if __gwmon_check_gateway "$managed_network"; then
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router_detected=1
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else
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router_detected=0
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fi
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}
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# Check whether the configured mode matches the mode that is determined by
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# checking for connectivity to the gateway.
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#
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# input: $1 cur_role: the current mode that is configured
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# input: $2 start_mode: the mode in which the auto-configuration script is being
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# run; This is used by the init script to help indicate
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# that it was an explicit change into this mode.
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# If the mode was CAP, then it should take some time
|
||
|
|
# before it is willing to switch back to non-CAP due
|
||
|
|
# to lack of a gateway.
|
||
|
|
# input: $3 managed_network: the logical name for the network interfaces to
|
||
|
|
# monitor
|
||
|
|
#
|
||
|
|
# return: value indicating the desired mode of operation
|
||
|
|
# - $GWMON_MODE_CAP to act as the main AP
|
||
|
|
# - $GWMON_MODE_NON_CAP to switch to being a secondary AP
|
||
|
|
# - $GWMON_MODE_NO_CHANGE for now change in the mode
|
||
|
|
__gwmon_init() {
|
||
|
|
local cur_mode=$1
|
||
|
|
local start_mode=$2
|
||
|
|
local eth_mon_enabled
|
||
|
|
|
||
|
|
managed_network=$3
|
||
|
|
__gwmon_find_switch "$managed_network"
|
||
|
|
[ -n "$switch_iface" ] && __gwmon_info "found switch on $switch_iface VLAN=$vlan_group"
|
||
|
|
|
||
|
|
config_load repacd
|
||
|
|
config_get eth_mon_enabled repacd 'EnableEthernetMonitoring' '0'
|
||
|
|
|
||
|
|
config_load network
|
||
|
|
config_foreach __gwmon_get_switch_ports switch_vlan "$vlan_group" switch_ports cpu_portmap
|
||
|
|
__gwmon_info "switch ports in the $managed_network network: $switch_ports"
|
||
|
|
|
||
|
|
__gwmon_update_router_detected
|
||
|
|
|
||
|
|
if [ "$cur_mode" = "CAP" ]; then
|
||
|
|
if [ "$router_detected" -eq 0 ]; then
|
||
|
|
if [ "$eth_mon_enabled" -eq 0 ] && [ ! "$start_mode" = "CAP" ]; then
|
||
|
|
return $GWMON_MODE_NON_CAP
|
||
|
|
else
|
||
|
|
local retries=3
|
||
|
|
|
||
|
|
while [ "$retries" -gt 0 ]; do
|
||
|
|
__gwmon_update_router_detected
|
||
|
|
[ "$router_detected" -gt 0 ] && break
|
||
|
|
retries=$((retries - 1))
|
||
|
|
__gwmon_debug "redetecting gateway ($retries retries left)"
|
||
|
|
done
|
||
|
|
|
||
|
|
# If gateway was still not detected after our attempts,
|
||
|
|
# indicate we should change to non-CAP mode.
|
||
|
|
if [ "$router_detected" -eq 0 ]; then
|
||
|
|
if [ "$eth_mon_enabled" -eq 0 ]; then
|
||
|
|
return $GWMON_MODE_NON_CAP
|
||
|
|
else
|
||
|
|
return $GWMON_MODE_NO_CHANGE
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
else # non-CAP mode
|
||
|
|
if [ "$router_detected" -eq 1 ]; then
|
||
|
|
local mixedbh
|
||
|
|
mixedbh=$(uci get repacd.repacd.EnableMixedBackhaul 2>/dev/null)
|
||
|
|
if [ "$mixedbh" != "1" ]; then
|
||
|
|
return $GWMON_MODE_CAP
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
return $GWMON_MODE_NO_CHANGE
|
||
|
|
}
|
||
|
|
|
||
|
|
# return: 2 to indicate CAP mode; 1 for non-CAP mode; 0 for no change
|
||
|
|
__gwmon_check() {
|
||
|
|
if [ "$router_detected" -eq 0 ]; then
|
||
|
|
__gwmon_update_router_detected
|
||
|
|
|
||
|
|
if [ "$router_detected" -gt 0 ]; then
|
||
|
|
local mixedbh
|
||
|
|
mixedbh=$(uci get repacd.repacd.EnableMixedBackhaul 2>/dev/null)
|
||
|
|
# if we want to support mixed backhaul, e.g., if we want to
|
||
|
|
# enable both WiFi and Ethernet backhaul, then we stay in
|
||
|
|
# non-cap mode so the STA interfaces remain up. otherwise,
|
||
|
|
# set to cap mode which brings down the STA interfaces.
|
||
|
|
if [ "$mixedbh" != "1" ]; then
|
||
|
|
return $GWMON_MODE_CAP
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
if ! __gwmon_check_gw_iface_link "$managed_network"; then
|
||
|
|
# Gateway is gone
|
||
|
|
router_detected=0
|
||
|
|
gw_iface=""
|
||
|
|
gw_switch_port=""
|
||
|
|
return $GWMON_MODE_NON_CAP
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
return $GWMON_MODE_NO_CHANGE
|
||
|
|
}
|