allen
f15ac69925
Includes: - package/ GL-XE3000 kit-busrouter (opkg) - scripts/provision.sh (GL) and provision-synology.sh (Synology) - syno-balance/ — new WAN balancer replacing aiwanbal (SmartWAN adapter) - kit-connect/ — unified connectivity SPK (Tailscale + reverse SSH) - docs/deployment/synology-rt2600ac-checklist.md — 62-point checklist - docs/provisioning/device-identity.md — fleet identity spec - docs/pilot/checklist.md — field pilot validation - x4078_20260721.dss — reference config backup Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
118 lines
4.7 KiB
Bash
Executable File
118 lines
4.7 KiB
Bash
Executable File
#!/bin/sh
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# smartwan-adapter.sh — Read SmartWAN state and write dw_weight_ratio.
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# NEVER calls loadbalance lb-enable. NEVER calls loadbalance at all.
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# Rides entirely on top of SmartWAN — does not own routing.
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#
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# Public API:
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# sw_read_state read SmartWAN mode, interfaces, current weights
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# sw_read_wan_state <iface> read per-WAN state: operstate, gateway, weight
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# sw_write_weights <w1> <w2> write dw_weight_ratio (50=balanced, 20/80=biased)
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# sw_signal_reload touch SmartWAN to re-read config (light touch, no conntrack flush)
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#
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# Config file: /usr/syno/etc/smartwan/smartwan.conf
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# Weight field: dw_weight_ratio = <0-100> (WAN1 share %, WAN2 = 100-WAN1)
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# - dw_weight_ratio appears twice in the conf (once for each ifname section)
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# - We update BOTH occurrences
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# - 50/50 = balanced, 70 = 70% WAN1 / 30% WAN2
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SMARTWAN_CONF="/usr/syno/etc/smartwan/smartwan.conf"
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STATE_DIR="${STATE_DIR:-/tmp/syno-balance}"
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LOG_TAG="${LOG_TAG:-syno-balance}"
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log() { logger -t "$LOG_TAG" -p local0.warn "$*"; }
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warn() { logger -t "$LOG_TAG" -p local0.warn "WARNING: $*"; }
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# ── Read SmartWAN global state ──────────────────────────────────────
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sw_read_state() {
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[ -f "$SMARTWAN_CONF" ] || { warn "smartwan.conf not found"; return 1; }
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. "$SMARTWAN_CONF" 2>/dev/null
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echo "MODE=${smartwan_mode:-unknown}"
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echo "WAN1_IFNAME=${smartwan_ifname_1:-wan}"
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echo "WAN2_IFNAME=${smartwan_ifname_2:-lan1}"
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echo "WAN1_WEIGHT=${dw_weight_ratio:-50}"
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}
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# ── Read a single WAN's runtime state ───────────────────────────────
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# Returns: STATE=up|down GW=x.x.x.x WEIGHT=N
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sw_read_wan_state() {
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local iface="$1"
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[ -n "$iface" ] || return 1
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# Physical link state
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local operstate="down"
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operstate=$(cat "/sys/class/net/${iface}/operstate" 2>/dev/null || echo "unknown")
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# Gateway from routing table
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local gw=""
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gw=$(ip route show dev "$iface" 2>/dev/null | grep default | awk '{print $3}' | head -1)
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[ -z "$gw" ] && gw=$(ip route show dev "$iface" 2>/dev/null | awk '/via/ {print $3}' | head -1)
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# Current weight from smartwan.conf
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local weight=0
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[ -f "$SMARTWAN_CONF" ] && . "$SMARTWAN_CONF" 2>/dev/null
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weight="${dw_weight_ratio:-50}"
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echo "IFACE=${iface} STATE=${operstate} GW=${gw:-none} WEIGHT=${weight}"
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}
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# ── Write dw_weight_ratio for both WANs ─────────────────────────────
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# $1: WAN1 weight (0-100, WAN2 = 100-WAN1)
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# Sets dw_weight_ratio in smartwan.conf for both ifname sections.
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# Does NOT call loadbalance. SmartWAN re-reads on its own cycle.
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sw_write_weights() {
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local w1="$1"
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case "$w1" in
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''|*[!0-9]*) warn "invalid weight: $w1"; return 1 ;;
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esac
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[ "$w1" -lt 0 ] && w1=0
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[ "$w1" -gt 100 ] && w1=100
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local current=50
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[ -f "$SMARTWAN_CONF" ] && . "$SMARTWAN_CONF" 2>/dev/null
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current="${dw_weight_ratio:-50}"
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# Only write if changed by >= 10 (hysteresis via lib-decide.sh)
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local diff=$(( w1 > current ? w1 - current : current - w1 ))
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if [ "$diff" -lt 10 ]; then
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return 0 # within hysteresis band — no-op
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fi
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# Write to smartwan.conf using sed — safe, atomic-ish
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# SmartWAN has dw_weight_ratio on both ifname sections
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if [ -f "$SMARTWAN_CONF" ]; then
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sed -i "s/^dw_weight_ratio=.*/dw_weight_ratio=${w1}/" "$SMARTWAN_CONF" 2>/dev/null
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fi
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log "smartwan: dw_weight_ratio ${current} -> ${w1} (WAN1=${w1}% WAN2=$((100-w1))%)"
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mkdir -p "$STATE_DIR"
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echo "$w1" > "$STATE_DIR/sw_weight_written"
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echo "$(date +%s)" > "$STATE_DIR/sw_weight_time"
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}
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# ── Light touch — signal SmartWAN to re-read config ────────────────
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# Uses synoservice if available. NEVER calls loadbalance lb-enable.
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sw_signal_reload() {
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# SRM 1.3+ has synoservice to restart individual services
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if command -v synoservice >/dev/null 2>&1; then
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synoservice --restart smartwan 2>/dev/null && \
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{ log "smartwan: light-reload via synoservice"; return 0; }
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fi
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# Fallback: just touch the config — SmartWAN polls it
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touch "$SMARTWAN_CONF" 2>/dev/null
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log "smartwan: config touched for polling re-read"
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return 0
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}
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# ── Check if SmartWAN is in load-balance mode ───────────────────────
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sw_is_lb_mode() {
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[ -f "$SMARTWAN_CONF" ] || return 1
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local mode=""
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mode=$(grep '^smartwan_mode=' "$SMARTWAN_CONF" 2>/dev/null | cut -d= -f2)
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case "$mode" in
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loadbalance|loadbalancing_failover) return 0 ;;
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*) return 1 ;;
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esac
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}
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