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netfilter: conntrack: de-inline nf_conntrack_eventmask_report 

Way too large; move it to nf_conntrack_ecache.c.
Reduces total object size by 1216 byte on my machine.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2016-04-11 21:52:35 +02:00 committed by Pablo Neira Ayuso
parent 85f1e7c29a
commit 3c435e2e41
2 changed files with 66 additions and 54 deletions
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66
include/net/netfilter/nf_conntrack_ecache.h
View File

@ -73,6 +73,8 @@ void nf_conntrack_unregister_notifier(struct net *net,
struct nf_ct_event_notifier *nb);
void nf_ct_deliver_cached_events(struct nf_conn *ct);
int nf_conntrack_eventmask_report(unsigned int eventmask, struct nf_conn *ct,
u32 portid, int report);
static inline void
nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
@ -90,70 +92,26 @@ nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
set_bit(event, &e->cache);
}
static inline int
nf_conntrack_eventmask_report(unsigned int eventmask,
struct nf_conn *ct,
u32 portid,
int report)
{
int ret = 0;
struct net *net = nf_ct_net(ct);
struct nf_ct_event_notifier *notify;
struct nf_conntrack_ecache *e;
rcu_read_lock();
notify = rcu_dereference(net->ct.nf_conntrack_event_cb);
if (notify == NULL)
goto out_unlock;
e = nf_ct_ecache_find(ct);
if (e == NULL)
goto out_unlock;
if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct)) {
struct nf_ct_event item = {
.ct = ct,
.portid = e->portid ? e->portid : portid,
.report = report
};
/* This is a resent of a destroy event? If so, skip missed */
unsigned long missed = e->portid ? 0 : e->missed;
if (!((eventmask | missed) & e->ctmask))
goto out_unlock;
ret = notify->fcn(eventmask | missed, &item);
if (unlikely(ret < 0 || missed)) {
spin_lock_bh(&ct->lock);
if (ret < 0) {
/* This is a destroy event that has been
* triggered by a process, we store the PORTID
* to include it in the retransmission. */
if (eventmask & (1 << IPCT_DESTROY) &&
e->portid == 0 && portid != 0)
e->portid = portid;
else
e->missed |= eventmask;
} else
e->missed &= ~missed;
spin_unlock_bh(&ct->lock);
}
}
out_unlock:
rcu_read_unlock();
return ret;
}
static inline int
nf_conntrack_event_report(enum ip_conntrack_events event, struct nf_conn *ct,
u32 portid, int report)
{
const struct net *net = nf_ct_net(ct);
if (!rcu_access_pointer(net->ct.nf_conntrack_event_cb))
return 0;
return nf_conntrack_eventmask_report(1 << event, ct, portid, report);
}
static inline int
nf_conntrack_event(enum ip_conntrack_events event, struct nf_conn *ct)
{
const struct net *net = nf_ct_net(ct);
if (!rcu_access_pointer(net->ct.nf_conntrack_event_cb))
return 0;
return nf_conntrack_eventmask_report(1 << event, ct, 0, 0);
}

54
net/netfilter/nf_conntrack_ecache.c
View File

@ -113,6 +113,60 @@ static void ecache_work(struct work_struct *work)
schedule_delayed_work(&ctnet->ecache_dwork, delay);
}
int nf_conntrack_eventmask_report(unsigned int eventmask, struct nf_conn *ct,
u32 portid, int report)
{
int ret = 0;
struct net *net = nf_ct_net(ct);
struct nf_ct_event_notifier *notify;
struct nf_conntrack_ecache *e;
rcu_read_lock();
notify = rcu_dereference(net->ct.nf_conntrack_event_cb);
if (!notify)
goto out_unlock;
e = nf_ct_ecache_find(ct);
if (!e)
goto out_unlock;
if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct)) {
struct nf_ct_event item = {
.ct = ct,
.portid = e->portid ? e->portid : portid,
.report = report
};
/* This is a resent of a destroy event? If so, skip missed */
unsigned long missed = e->portid ? 0 : e->missed;
if (!((eventmask | missed) & e->ctmask))
goto out_unlock;
ret = notify->fcn(eventmask | missed, &item);
if (unlikely(ret < 0 || missed)) {
spin_lock_bh(&ct->lock);
if (ret < 0) {
/* This is a destroy event that has been
* triggered by a process, we store the PORTID
* to include it in the retransmission.
*/
if (eventmask & (1 << IPCT_DESTROY) &&
e->portid == 0 && portid != 0)
e->portid = portid;
else
e->missed |= eventmask;
} else {
e->missed &= ~missed;
}
spin_unlock_bh(&ct->lock);
}
}
out_unlock:
rcu_read_unlock();
return ret;
}
EXPORT_SYMBOL_GPL(nf_conntrack_eventmask_report);
/* deliver cached events and clear cache entry - must be called with locally
* disabled softirqs */
void nf_ct_deliver_cached_events(struct nf_conn *ct)