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authorWANG Cong <xiyou.wangcong@gmail.com>2016-07-25 16:09:41 -0700
committerDavid S. Miller <davem@davemloft.net>2016-07-25 21:49:19 -0700
commita85a970af265f156740977168b542234511b28a8 (patch)
tree19866c37883917b1ec6964fcbae76335f9de0139 /net/sched/act_skbedit.c
parentipvlan: Scrub skb before crossing the namespace boundry (diff)
downloadlinux-dev-a85a970af265f156740977168b542234511b28a8.tar.xz
linux-dev-a85a970af265f156740977168b542234511b28a8.zip
net_sched: move tc_action into tcf_common
struct tc_action is confusing, currently we use it for two purposes: 1) Pass in arguments and carry out results from helper functions 2) A generic representation for tc actions The first one is error-prone, since we need to make sure we don't miss anything. This patch aims to get rid of this use, by moving tc_action into tcf_common, so that they are allocated together in hashtable and can be cast'ed easily. And together with the following patch, we could really make tc_action a generic representation for all tc actions and each type of action can inherit from it. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_skbedit.c')
-rw-r--r--net/sched/act_skbedit.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index 8e573c0f8742..a133dcb82132 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -30,11 +30,12 @@
#define SKBEDIT_TAB_MASK 15
static int skbedit_net_id;
+static struct tc_action_ops act_skbedit_ops;
static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
- struct tcf_skbedit *d = a->priv;
+ struct tcf_skbedit *d = to_skbedit(a);
spin_lock(&d->tcf_lock);
tcf_lastuse_update(&d->tcf_tm);
@@ -63,7 +64,7 @@ static const struct nla_policy skbedit_policy[TCA_SKBEDIT_MAX + 1] = {
};
static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
- struct nlattr *est, struct tc_action *a,
+ struct nlattr *est, struct tc_action **a,
int ovr, int bind)
{
struct tc_action_net *tn = net_generic(net, skbedit_net_id);
@@ -114,21 +115,21 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
return 0;
if (!flags) {
- tcf_hash_release(a, bind);
+ tcf_hash_release(*a, bind);
return -EINVAL;
}
if (!exists) {
ret = tcf_hash_create(tn, parm->index, est, a,
- sizeof(*d), bind, false);
+ &act_skbedit_ops, bind, false);
if (ret)
return ret;
- d = to_skbedit(a);
+ d = to_skbedit(*a);
ret = ACT_P_CREATED;
} else {
- d = to_skbedit(a);
- tcf_hash_release(a, bind);
+ d = to_skbedit(*a);
+ tcf_hash_release(*a, bind);
if (!ovr)
return -EEXIST;
}
@@ -150,7 +151,7 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla,
spin_unlock_bh(&d->tcf_lock);
if (ret == ACT_P_CREATED)
- tcf_hash_insert(tn, a);
+ tcf_hash_insert(tn, *a);
return ret;
}
@@ -158,7 +159,7 @@ static int tcf_skbedit_dump(struct sk_buff *skb, struct tc_action *a,
int bind, int ref)
{
unsigned char *b = skb_tail_pointer(skb);
- struct tcf_skbedit *d = a->priv;
+ struct tcf_skbedit *d = to_skbedit(a);
struct tc_skbedit opt = {
.index = d->tcf_index,
.refcnt = d->tcf_refcnt - ref,
@@ -194,14 +195,14 @@ nla_put_failure:
static int tcf_skbedit_walker(struct net *net, struct sk_buff *skb,
struct netlink_callback *cb, int type,
- struct tc_action *a)
+ const struct tc_action_ops *ops)
{
struct tc_action_net *tn = net_generic(net, skbedit_net_id);
- return tcf_generic_walker(tn, skb, cb, type, a);
+ return tcf_generic_walker(tn, skb, cb, type, ops);
}
-static int tcf_skbedit_search(struct net *net, struct tc_action *a, u32 index)
+static int tcf_skbedit_search(struct net *net, struct tc_action **a, u32 index)
{
struct tc_action_net *tn = net_generic(net, skbedit_net_id);
@@ -217,6 +218,7 @@ static struct tc_action_ops act_skbedit_ops = {
.init = tcf_skbedit_init,
.walk = tcf_skbedit_walker,
.lookup = tcf_skbedit_search,
+ .size = sizeof(struct tcf_skbedit),
};
static __net_init int skbedit_init_net(struct net *net)