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xfrm: Replace hrtimer tasklet with softirq hrtimer

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Switch the timer to HRTIMER_MODE_SOFT, which executed the timer
callback in softirq context and remove the hrtimer_tasklet.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: netdev@vger.kernel.org
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: azrim <mirzaspc@gmail.com>
This commit is contained in:
Thomas Gleixner 2017-11-23 16:39:13 +01:00 committed by azrim
parent f1ba9b4576
commit 7deb14269d
No known key found for this signature in database
GPG Key ID: 497F8FB059B45D1C
2 changed files with 19 additions and 13 deletions
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2
include/net/xfrm.h
View File

@ -219,7 +219,7 @@ struct xfrm_state {
struct xfrm_stats stats;
struct xfrm_lifetime_cur curlft;
struct tasklet_hrtimer mtimer;
struct hrtimer mtimer;
struct xfrm_state_offload xso;

30
net/xfrm/xfrm_state.c
View File

@ -427,7 +427,7 @@ static void xfrm_put_mode(struct xfrm_mode *mode)
static void xfrm_state_gc_destroy(struct xfrm_state *x)
{
tasklet_hrtimer_cancel(&x->mtimer);
hrtimer_cancel(&x->mtimer);
del_timer_sync(&x->rtimer);
kfree(x->aead);
kfree(x->aalg);
@ -474,8 +474,8 @@ static void xfrm_state_gc_task(struct work_struct *work)
static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
{
struct tasklet_hrtimer *thr = container_of(me, struct tasklet_hrtimer, timer);
struct xfrm_state *x = container_of(thr, struct xfrm_state, mtimer);
struct xfrm_state *x = container_of(me, struct xfrm_state, mtimer);
enum hrtimer_restart ret = HRTIMER_NORESTART;
unsigned long now = get_seconds();
long next = LONG_MAX;
int warn = 0;
@ -539,7 +539,8 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
km_state_expired(x, 0, 0);
resched:
if (next != LONG_MAX) {
tasklet_hrtimer_start(&x->mtimer, ktime_set(next, 0), HRTIMER_MODE_REL);
hrtimer_forward_now(&x->mtimer, ktime_set(next, 0));
ret = HRTIMER_RESTART;
}
goto out;
@ -556,7 +557,7 @@ expired:
out:
spin_unlock(&x->lock);
return HRTIMER_NORESTART;
return ret;
}
static void xfrm_replay_timer_handler(unsigned long data);
@ -575,8 +576,8 @@ struct xfrm_state *xfrm_state_alloc(struct net *net)
INIT_HLIST_NODE(&x->bydst);
INIT_HLIST_NODE(&x->bysrc);
INIT_HLIST_NODE(&x->byspi);
tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler,
CLOCK_BOOTTIME, HRTIMER_MODE_ABS);
hrtimer_init(&x->mtimer, CLOCK_BOOTTIME, HRTIMER_MODE_ABS_SOFT);
x->mtimer.function = xfrm_timer_handler;
setup_timer(&x->rtimer, xfrm_replay_timer_handler,
(unsigned long)x);
x->curlft.add_time = get_seconds();
@ -1038,7 +1039,9 @@ found:
hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h);
}
x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires;
tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL);
hrtimer_start(&x->mtimer,
ktime_set(net->xfrm.sysctl_acq_expires, 0),
HRTIMER_MODE_REL_SOFT);
net->xfrm.state_num++;
xfrm_hash_grow_check(net, x->bydst.next != NULL);
spin_unlock_bh(&net->xfrm.xfrm_state_lock);
@ -1150,7 +1153,7 @@ static void __xfrm_state_insert(struct xfrm_state *x)
hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h);
}
tasklet_hrtimer_start(&x->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL);
hrtimer_start(&x->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL_SOFT);
if (x->replay_maxage)
mod_timer(&x->rtimer, jiffies + x->replay_maxage);
@ -1257,7 +1260,9 @@ static struct xfrm_state *__find_acq_core(struct net *net,
x->mark.m = m->m;
x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires;
xfrm_state_hold(x);
tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL);
hrtimer_start(&x->mtimer,
ktime_set(net->xfrm.sysctl_acq_expires, 0),
HRTIMER_MODE_REL_SOFT);
list_add(&x->km.all, &net->xfrm.state_all);
hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h);
h = xfrm_src_hash(net, daddr, saddr, family);
@ -1588,7 +1593,8 @@ out:
memcpy(&x1->lft, &x->lft, sizeof(x1->lft));
x1->km.dying = 0;
tasklet_hrtimer_start(&x1->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL);
hrtimer_start(&x1->mtimer, ktime_set(1, 0),
HRTIMER_MODE_REL_SOFT);
if (x1->curlft.use_time)
xfrm_state_check_expire(x1);
@ -1625,7 +1631,7 @@ int xfrm_state_check_expire(struct xfrm_state *x)
if (x->curlft.bytes >= x->lft.hard_byte_limit ||
x->curlft.packets >= x->lft.hard_packet_limit) {
x->km.state = XFRM_STATE_EXPIRED;
tasklet_hrtimer_start(&x->mtimer, 0, HRTIMER_MODE_REL);
hrtimer_start(&x->mtimer, 0, HRTIMER_MODE_REL_SOFT);
return -EINVAL;
}