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xt_hardidletiemr: Check for remaining expiry time

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-xt_hardidletimers are getting reset with addition/
deletion of any iptable rule in any chain of raw/mangle
table.
-Check and restart the timer with remaining expiry time.

Change-Id: I55c6fb211b929dfe500edda8e7c01530f944b067
CRs-Fixed: 2367114
Acked-by: Manoj Basapathi <manojbm@qti.qualcomm.com>
Signed-off-by: Devi Sandeep Endluri V V <dendluri@codeaurora.org>
This commit is contained in:
Devi Sandeep Endluri V V 2019-01-14 10:47:29 +05:30 committed by Gerrit - the friendly Code Review server
parent ccc4db28d5
commit 2cebfbfb2d
1 changed files with 11 additions and 7 deletions
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18
net/netfilter/xt_HARDIDLETIMER.c
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@ -237,6 +237,9 @@ static int hardidletimer_tg_checkentry(const struct xt_tgchk_param *par)
struct hardidletimer_tg_info *info = par->targinfo;
int ret;
ktime_t tout;
struct timespec ktimespec;
memset(&ktimespec, 0, sizeof(struct timespec));
pr_debug("checkentry targinfo %s\n", info->label);
@ -257,14 +260,15 @@ static int hardidletimer_tg_checkentry(const struct xt_tgchk_param *par)
info->timer = __hardidletimer_tg_find_by_label(info->label);
if (info->timer) {
info->timer->refcnt++;
if (!info->timer->active) {
schedule_work(&info->timer->work);
pr_debug("Starting Checkentry timer\n");
}
/* calculate remaining expiry time */
tout = alarm_expires_remaining(&info->timer->alarm);
ktimespec = ktime_to_timespec(tout);
info->timer->active = true;
tout = ktime_set(info->timeout, 0);
alarm_start_relative(&info->timer->alarm, tout);
if (ktimespec.tv_sec > 0) {
pr_debug("time_expiry_remaining %ld\n",
ktimespec.tv_sec);
alarm_start_relative(&info->timer->alarm, tout);
}
pr_debug("increased refcnt of timer %s to %u\n",
info->label, info->timer->refcnt);