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net_sched: act: hide struct tcf_common from API

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Now we can totally hide it from modules. tcf_hash_*() API's
will operate on struct tc_action, modules don't need to care about
the details.

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 2014-02-11 17:07:31 -08:00 • committed by David S. Miller
parent 7282ec8cb4
commit 86062033fe
19 changed files with 135 additions and 206 deletions
Download patch file Download diff file Expand all files Collapse all files

43
net/sched/act_api.c
View file

@ -27,8 +27,11 @@
#include <net/act_api.h>
#include <net/netlink.h>
void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo)
void tcf_hash_destroy(struct tc_action *a)
{
struct tcf_common *p = a->priv;
struct tcf_hashinfo *hinfo = a->ops->hinfo;
spin_lock_bh(&hinfo->lock);
hlist_del(&p->tcfc_head);
spin_unlock_bh(&hinfo->lock);
@ -42,9 +45,9 @@ void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo)
}
EXPORT_SYMBOL(tcf_hash_destroy);
int tcf_hash_release(struct tcf_common *p, int bind,
struct tcf_hashinfo *hinfo)
int tcf_hash_release(struct tc_action *a, int bind)
{
struct tcf_common *p = a->priv;
int ret = 0;
if (p) {
@ -53,7 +56,7 @@ int tcf_hash_release(struct tcf_common *p, int bind,
p->tcfc_refcnt--;
if (p->tcfc_bindcnt <= 0 && p->tcfc_refcnt <= 0) {
tcf_hash_destroy(p, hinfo);
tcf_hash_destroy(a);
ret = 1;
}
}
@ -127,7 +130,8 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a)
for (i = 0; i < (hinfo->hmask + 1); i++) {
head = &hinfo->htab[tcf_hash(i, hinfo->hmask)];
hlist_for_each_entry_safe(p, n, head, tcfc_head) {
if (ACT_P_DELETED == tcf_hash_release(p, 0, hinfo)) {
a->priv = p;
if (ACT_P_DELETED == tcf_hash_release(a, 0)) {
module_put(a->ops->owner);
n_i++;
}
@ -198,7 +202,7 @@ int tcf_hash_search(struct tc_action *a, u32 index)
}
EXPORT_SYMBOL(tcf_hash_search);
struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind)
int tcf_hash_check(u32 index, struct tc_action *a, int bind)
{
struct tcf_hashinfo *hinfo = a->ops->hinfo;
struct tcf_common *p = NULL;
@ -207,19 +211,30 @@ struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind)
p->tcfc_bindcnt++;
p->tcfc_refcnt++;
a->priv = p;
return 1;
}
return p;
return 0;
}
EXPORT_SYMBOL(tcf_hash_check);
struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est,
struct tc_action *a, int size, int bind)
void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est)
{
struct tcf_common *pc = a->priv;
if (est)
gen_kill_estimator(&pc->tcfc_bstats,
&pc->tcfc_rate_est);
kfree_rcu(pc, tcfc_rcu);
}
EXPORT_SYMBOL(tcf_hash_cleanup);
int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
int size, int bind)
{
struct tcf_hashinfo *hinfo = a->ops->hinfo;
struct tcf_common *p = kzalloc(size, GFP_KERNEL);
if (unlikely(!p))
return ERR_PTR(-ENOMEM);
return -ENOMEM;
p->tcfc_refcnt = 1;
if (bind)
p->tcfc_bindcnt = 1;
@ -234,17 +249,19 @@ struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est,
&p->tcfc_lock, est);
if (err) {
kfree(p);
return ERR_PTR(err);
return err;
}
}
a->priv = (void *) p;
return p;
return 0;
}
EXPORT_SYMBOL(tcf_hash_create);
void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo)
void tcf_hash_insert(struct tc_action *a)
{
struct tcf_common *p = a->priv;
struct tcf_hashinfo *hinfo = a->ops->hinfo;
unsigned int h = tcf_hash(p->tcfc_index, hinfo->hmask);
spin_lock_bh(&hinfo->lock);