#!/bin/bash

# Script to find all interfaces of bond0 and set channel parameters
# Compatible with Oracle Linux 9, Ubuntu, and Debian

. /usr/sbin/so-common

{% set NICCHANNELS = salt['pillar.get']('sensor:channels', '1') %}

# Number of channels to set
CHANNELS={{ NICCHANNELS }}

# Exit on any error
set -e

# Check if running as root
if [[ $EUID -ne 0 ]]; then
   exit 1
fi

# Check if bond0 exists
if ! ip link show bond0 &>/dev/null; then
    exit 1
fi

# Function to get slave interfaces - works across distributions
get_bond_slaves() {
    local bond_name="$1"
    local slaves=""
    
    # Method 1: Try /sys/class/net first (most reliable)
    if [ -f "/sys/class/net/$bond_name/bonding/slaves" ]; then
        slaves=$(cat "/sys/class/net/$bond_name/bonding/slaves" 2>/dev/null)
    fi
    
    # Method 2: Try /proc/net/bonding (older systems)
    if [ -z "$slaves" ] && [ -f "/proc/net/bonding/$bond_name" ]; then
        slaves=$(grep "Slave Interface:" "/proc/net/bonding/$bond_name" 2>/dev/null | awk '{print $3}' | tr '\n' ' ')
    fi
    
    # Method 3: Parse ip link output (universal fallback)
    if [ -z "$slaves" ]; then
        slaves=$(ip -o link show | grep "master $bond_name" | awk -F': ' '{print $2}' | cut -d'@' -f1 | tr '\n' ' ')
    fi
    
    echo "$slaves"
}

# Get slave interfaces
SLAVES=$(get_bond_slaves bond0)

if [ -z "$SLAVES" ]; then
    exit 1
fi

# Process each slave interface
for interface in $SLAVES; do
    # Skip if interface doesn't exist
    if ! ip link show "$interface" &>/dev/null; then
        continue
    fi
    
    # Try combined mode first
    if ethtool -L "$interface" combined $CHANNELS &>/dev/null; then
        continue
    fi
    
    # Fall back to separate rx/tx
    ethtool -L "$interface" rx $CHANNELS tx $CHANNELS &>/dev/null || true
done

exit 0