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net_sched: init struct tcf_hashinfo at register time

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It looks weird to store the lock out of the struct but
still points to a static variable. Just move them into the struct.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong
2013-12-15 20:15:08 -08:00
committed by David S. Miller
parent 5da57f422d
commit 369ba56787
11 changed files with 97 additions and 95 deletions
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38
net/sched/act_police.c
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@@ -41,15 +41,8 @@ struct tcf_police {
container_of(pc, struct tcf_police, common)
#define POL_TAB_MASK 15
static struct tcf_common *tcf_police_ht[POL_TAB_MASK + 1];
static u32 police_idx_gen;
static DEFINE_RWLOCK(police_lock);
static struct tcf_hashinfo police_hash_info = {
.htab = tcf_police_ht,
.hmask = POL_TAB_MASK,
.lock = &police_lock,
};
static struct tcf_hashinfo police_hash_info;
/* old policer structure from before tc actions */
struct tc_police_compat {
@@ -71,12 +64,12 @@ static int tcf_act_police_walker(struct sk_buff *skb, struct netlink_callback *c
int err = 0, index = -1, i = 0, s_i = 0, n_i = 0;
struct nlattr *nest;
read_lock_bh(&police_lock);
read_lock_bh(&police_hash_info.lock);
s_i = cb->args[0];
for (i = 0; i < (POL_TAB_MASK + 1); i++) {
p = tcf_police_ht[tcf_hash(i, POL_TAB_MASK)];
p = police_hash_info.htab[tcf_hash(i, POL_TAB_MASK)];
for (; p; p = p->tcfc_next) {
index++;
@@ -101,7 +94,7 @@ static int tcf_act_police_walker(struct sk_buff *skb, struct netlink_callback *c
}
}
done:
read_unlock_bh(&police_lock);
read_unlock_bh(&police_hash_info.lock);
if (n_i)
cb->args[0] += n_i;
return n_i;
@@ -116,11 +109,11 @@ static void tcf_police_destroy(struct tcf_police *p)
unsigned int h = tcf_hash(p->tcf_index, POL_TAB_MASK);
struct tcf_common **p1p;
for (p1p = &tcf_police_ht[h]; *p1p; p1p = &(*p1p)->tcfc_next) {
for (p1p = &police_hash_info.htab[h]; *p1p; p1p = &(*p1p)->tcfc_next) {
if (*p1p == &p->common) {
write_lock_bh(&police_lock);
write_lock_bh(&police_hash_info.lock);
*p1p = p->tcf_next;
write_unlock_bh(&police_lock);
write_unlock_bh(&police_hash_info.lock);
gen_kill_estimator(&p->tcf_bstats,
&p->tcf_rate_est);
/*
@@ -266,10 +259,10 @@ override:
police->tcf_index = parm->index ? parm->index :
tcf_hash_new_index(&police_idx_gen, &police_hash_info);
h = tcf_hash(police->tcf_index, POL_TAB_MASK);
write_lock_bh(&police_lock);
police->tcf_next = tcf_police_ht[h];
tcf_police_ht[h] = &police->common;
write_unlock_bh(&police_lock);
write_lock_bh(&police_hash_info.lock);
police->tcf_next = police_hash_info.htab[h];
police_hash_info.htab[h] = &police->common;
write_unlock_bh(&police_hash_info.lock);
a->priv = police;
return ret;
@@ -414,12 +407,19 @@ static struct tc_action_ops act_police_ops = {
static int __init
police_init_module(void)
{
return tcf_register_action(&act_police_ops);
int err = tcf_hashinfo_init(&police_hash_info, POL_TAB_MASK+1);
if (err)
return err;
err = tcf_register_action(&act_police_ops);
if (err)
tcf_hashinfo_destroy(&police_hash_info);
return err;
}
static void __exit
police_cleanup_module(void)
{
tcf_hashinfo_destroy(&police_hash_info);
tcf_unregister_action(&act_police_ops);
}