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#!/usr/bin/python3

"""
tdc_batch.py - a script to generate TC batch file

Copyright (C) 2017 Chris Mi <chrism@mellanox.com>
"""

import argparse

parser = argparse.ArgumentParser(description='TC batch file generator')
parser.add_argument("device", help="device name")
parser.add_argument("file", help="batch file name")
parser.add_argument("-n", "--number", type=int,
                    help="how many lines in batch file")
parser.add_argument("-o", "--skip_sw",
                    help="skip_sw (offload), by default skip_hw",
                    action="store_true")
parser.add_argument("-s", "--share_action",
                    help="all filters share the same action",
                    action="store_true")
parser.add_argument("-p", "--prio",
                    help="all filters have different prio",
                    action="store_true")
args = parser.parse_args()

device = args.device
file = open(args.file, 'w')

number = 1
if args.number:
    number = args.number

skip = "skip_hw"
if args.skip_sw:
    skip = "skip_sw"

share_action = ""
if args.share_action:
    share_action = "index 1"

prio = "prio 1"
if args.prio:
    prio = ""
    if number > 0x4000:
        number = 0x4000

index = 0
for i in range(0x100):
    for j in range(0x100):
        for k in range(0x100):
            mac = ("{:02x}:{:02x}:{:02x}".format(i, j, k))
            src_mac = "e4:11:00:" + mac
            dst_mac = "e4:12:00:" + mac
            cmd = ("filter add dev {} {} protocol ip parent ffff: flower {} "
                   "src_mac {} dst_mac {} action drop {}".format
                   (device, prio, skip, src_mac, dst_mac, share_action))
            file.write("{}\n".format(cmd))
            index += 1
            if index >= number:
                file.close()
                exit(0)