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#!/usr/bin/env python3
# break down a decimal representation of an SA priority into its fields
# synopsis: priod.py prio...
# Copyright (C) 2018 D. Hugh Redelmeier (hugh@mimosa.com)
# from calculate_sa_prio(): uint32_t prio = pmax - (portsw << 17 | protow << 16 | srcw << 8 | dstw);
import sys
for p in sys.argv[1:]:
n = int(p)
pmin = (n >> 19) << 19
pmax = pmin + (1 << 19) - 1
pname = ['manual', 'static', 'oppo', 'oppo_anon'][pmin >> 19]
if pmin == 0:
print('{} {} {}'.format(n, hex(n), pname))
else:
# n == pmax - fields
fields = pmax - n
portsw = fields >> 17
protow = (fields >> 16) & 1
srcw = (fields >> 8) & 255
dstw = fields & 255
# print(n, ' ', hex(n), ' ', pname, ' portsw ', portsw, ', protow ', protow, ', srcw ', srcw, ', dstw ', dstw, sep='')
print('{} {} {} portsw {}, protow {}, srcw {}, dstw {}'.format(n, hex(n), pname, portsw, protow, srcw, dstw))
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