> Please just use do_div here and go back to the first version of the
> patch. Variable names could be more aligned with the RFC maybe?
So I tried:
static inline s32 rfc3315_s14_backoff_init(s32 irt)
{
/* multiply 'initial retransmission time' by 0.9 .. 1.1 */
u64 tmp = (900000 + prandom_u32() % 200001) * (u64)irt;
do_div(tmp, 1000000);
return (s32)tmp;
}
static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt)
{
/* multiply 'retransmission timeout' by 1.9 .. 2.1 */
u64 tmp = (1900000 + prandom_u32() % 200001) * (u64)rt;
do_div(tmp, 1000000);
if ((s32)tmp > mrt) {
/* multiply 'maximum retransmission time' by 0.9 .. 1.1 */
tmp = (900000 + prandom_u32() % 200001) * (u64)mrt;
do_div(tmp, 1000000);
}
return (s32)tmp;
}
but then building for i386 I get:
ERROR: "__udivdi3" [net/netfilter/xt_hashlimit.ko] undefined!
which happens even at net-next/master itself.
Anyway, I'll resubmit assuming the above is what you're looking for...
