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Date: Wed, 12 Feb 2014 07:44:00 -0500
From: Jamal Hadi Salim <jhs@...atatu.com>
To: Cong Wang <xiyou.wangcong@...il.com>, netdev@...r.kernel.org
CC: "David S. Miller" <davem@...emloft.net>
Subject: Re: [Patch net-next v3 3/5] net_sched: act: move tcf_hashinfo_init()
into tcf_register_action()
On 02/11/14 20:07, Cong Wang wrote:
> Cc: Jamal Hadi Salim <jhs@...atatu.com>
> Cc: David S. Miller <davem@...emloft.net>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
Signed-off-by: Jamal Hadi Salim <jhs@...atatu.com>
> ---
> include/net/act_api.h | 2 +-
> net/sched/act_api.c | 16 +++++++++++++++-
> net/sched/act_csum.c | 8 +-------
> net/sched/act_gact.c | 8 +-------
> net/sched/act_ipt.c | 14 +++-----------
> net/sched/act_mirred.c | 10 +---------
> net/sched/act_nat.c | 9 +--------
> net/sched/act_pedit.c | 9 +--------
> net/sched/act_police.c | 13 ++-----------
> net/sched/act_simple.c | 14 ++------------
> net/sched/act_skbedit.c | 8 +-------
> 11 files changed, 29 insertions(+), 82 deletions(-)
>
> diff --git a/include/net/act_api.h b/include/net/act_api.h
> index 3d22f42..969cac6 100644
> --- a/include/net/act_api.h
> +++ b/include/net/act_api.h
> @@ -107,7 +107,7 @@ int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
> void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est);
> void tcf_hash_insert(struct tc_action *a);
>
> -int tcf_register_action(struct tc_action_ops *a);
> +int tcf_register_action(struct tc_action_ops *a, unsigned int mask);
> int tcf_unregister_action(struct tc_action_ops *a);
> void tcf_action_destroy(struct list_head *actions, int bind);
> int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions,
> diff --git a/net/sched/act_api.c b/net/sched/act_api.c
> index a5bf935..c88d382 100644
> --- a/net/sched/act_api.c
> +++ b/net/sched/act_api.c
> @@ -275,9 +275,10 @@ EXPORT_SYMBOL(tcf_hash_insert);
> static LIST_HEAD(act_base);
> static DEFINE_RWLOCK(act_mod_lock);
>
> -int tcf_register_action(struct tc_action_ops *act)
> +int tcf_register_action(struct tc_action_ops *act, unsigned int mask)
> {
> struct tc_action_ops *a;
> + int err;
>
> /* Must supply act, dump and init */
> if (!act->act || !act->dump || !act->init)
> @@ -289,10 +290,21 @@ int tcf_register_action(struct tc_action_ops *act)
> if (!act->walk)
> act->walk = tcf_generic_walker;
>
> + act->hinfo = kmalloc(sizeof(struct tcf_hashinfo), GFP_KERNEL);
> + if (!act->hinfo)
> + return -ENOMEM;
> + err = tcf_hashinfo_init(act->hinfo, mask);
> + if (err) {
> + kfree(act->hinfo);
> + return err;
> + }
> +
> write_lock(&act_mod_lock);
> list_for_each_entry(a, &act_base, head) {
> if (act->type == a->type || (strcmp(act->kind, a->kind) == 0)) {
> write_unlock(&act_mod_lock);
> + tcf_hashinfo_destroy(act->hinfo);
> + kfree(act->hinfo);
> return -EEXIST;
> }
> }
> @@ -311,6 +323,8 @@ int tcf_unregister_action(struct tc_action_ops *act)
> list_for_each_entry(a, &act_base, head) {
> if (a == act) {
> list_del(&act->head);
> + tcf_hashinfo_destroy(act->hinfo);
> + kfree(act->hinfo);
> err = 0;
> break;
> }
> diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
> index 8df3060..edbf40d 100644
> --- a/net/sched/act_csum.c
> +++ b/net/sched/act_csum.c
> @@ -37,7 +37,6 @@
> #include <net/tc_act/tc_csum.h>
>
> #define CSUM_TAB_MASK 15
> -static struct tcf_hashinfo csum_hash_info;
>
> static const struct nla_policy csum_policy[TCA_CSUM_MAX + 1] = {
> [TCA_CSUM_PARMS] = { .len = sizeof(struct tc_csum), },
> @@ -561,7 +560,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_csum_ops = {
> .kind = "csum",
> - .hinfo = &csum_hash_info,
> .type = TCA_ACT_CSUM,
> .owner = THIS_MODULE,
> .act = tcf_csum,
> @@ -574,11 +572,7 @@ MODULE_LICENSE("GPL");
>
> static int __init csum_init_module(void)
> {
> - int err = tcf_hashinfo_init(&csum_hash_info, CSUM_TAB_MASK);
> - if (err)
> - return err;
> -
> - return tcf_register_action(&act_csum_ops);
> + return tcf_register_action(&act_csum_ops, CSUM_TAB_MASK);
> }
>
> static void __exit csum_cleanup_module(void)
> diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
> index 094a1b5..d6bcbd9 100644
> --- a/net/sched/act_gact.c
> +++ b/net/sched/act_gact.c
> @@ -24,7 +24,6 @@
> #include <net/tc_act/tc_gact.h>
>
> #define GACT_TAB_MASK 15
> -static struct tcf_hashinfo gact_hash_info;
>
> #ifdef CONFIG_GACT_PROB
> static int gact_net_rand(struct tcf_gact *gact)
> @@ -180,7 +179,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_gact_ops = {
> .kind = "gact",
> - .hinfo = &gact_hash_info,
> .type = TCA_ACT_GACT,
> .owner = THIS_MODULE,
> .act = tcf_gact,
> @@ -194,21 +192,17 @@ MODULE_LICENSE("GPL");
>
> static int __init gact_init_module(void)
> {
> - int err = tcf_hashinfo_init(&gact_hash_info, GACT_TAB_MASK);
> - if (err)
> - return err;
> #ifdef CONFIG_GACT_PROB
> pr_info("GACT probability on\n");
> #else
> pr_info("GACT probability NOT on\n");
> #endif
> - return tcf_register_action(&act_gact_ops);
> + return tcf_register_action(&act_gact_ops, GACT_TAB_MASK);
> }
>
> static void __exit gact_cleanup_module(void)
> {
> tcf_unregister_action(&act_gact_ops);
> - tcf_hashinfo_destroy(&gact_hash_info);
> }
>
> module_init(gact_init_module);
> diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
> index 71f29f1..8a64a07 100644
> --- a/net/sched/act_ipt.c
> +++ b/net/sched/act_ipt.c
> @@ -29,7 +29,6 @@
>
>
> #define IPT_TAB_MASK 15
> -static struct tcf_hashinfo ipt_hash_info;
>
> static int ipt_init_target(struct xt_entry_target *t, char *table, unsigned int hook)
> {
> @@ -262,7 +261,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_ipt_ops = {
> .kind = "ipt",
> - .hinfo = &ipt_hash_info,
> .type = TCA_ACT_IPT,
> .owner = THIS_MODULE,
> .act = tcf_ipt,
> @@ -273,7 +271,6 @@ static struct tc_action_ops act_ipt_ops = {
>
> static struct tc_action_ops act_xt_ops = {
> .kind = "xt",
> - .hinfo = &ipt_hash_info,
> .type = TCA_ACT_XT,
> .owner = THIS_MODULE,
> .act = tcf_ipt,
> @@ -289,20 +286,16 @@ MODULE_ALIAS("act_xt");
>
> static int __init ipt_init_module(void)
> {
> - int ret1, ret2, err;
> - err = tcf_hashinfo_init(&ipt_hash_info, IPT_TAB_MASK);
> - if (err)
> - return err;
> + int ret1, ret2;
>
> - ret1 = tcf_register_action(&act_xt_ops);
> + ret1 = tcf_register_action(&act_xt_ops, IPT_TAB_MASK);
> if (ret1 < 0)
> printk("Failed to load xt action\n");
> - ret2 = tcf_register_action(&act_ipt_ops);
> + ret2 = tcf_register_action(&act_ipt_ops, IPT_TAB_MASK);
> if (ret2 < 0)
> printk("Failed to load ipt action\n");
>
> if (ret1 < 0 && ret2 < 0) {
> - tcf_hashinfo_destroy(&ipt_hash_info);
> return ret1;
> } else
> return 0;
> @@ -312,7 +305,6 @@ static void __exit ipt_cleanup_module(void)
> {
> tcf_unregister_action(&act_xt_ops);
> tcf_unregister_action(&act_ipt_ops);
> - tcf_hashinfo_destroy(&ipt_hash_info);
> }
>
> module_init(ipt_init_module);
> diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
> index 0f00eb9..4f912c0 100644
> --- a/net/sched/act_mirred.c
> +++ b/net/sched/act_mirred.c
> @@ -31,7 +31,6 @@
>
> #define MIRRED_TAB_MASK 7
> static LIST_HEAD(mirred_list);
> -static struct tcf_hashinfo mirred_hash_info;
>
> static void tcf_mirred_release(struct tc_action *a, int bind)
> {
> @@ -234,7 +233,6 @@ static struct notifier_block mirred_device_notifier = {
>
> static struct tc_action_ops act_mirred_ops = {
> .kind = "mirred",
> - .hinfo = &mirred_hash_info,
> .type = TCA_ACT_MIRRED,
> .owner = THIS_MODULE,
> .act = tcf_mirred,
> @@ -253,19 +251,13 @@ static int __init mirred_init_module(void)
> if (err)
> return err;
>
> - err = tcf_hashinfo_init(&mirred_hash_info, MIRRED_TAB_MASK);
> - if (err) {
> - unregister_netdevice_notifier(&mirred_device_notifier);
> - return err;
> - }
> pr_info("Mirror/redirect action on\n");
> - return tcf_register_action(&act_mirred_ops);
> + return tcf_register_action(&act_mirred_ops, MIRRED_TAB_MASK);
> }
>
> static void __exit mirred_cleanup_module(void)
> {
> tcf_unregister_action(&act_mirred_ops);
> - tcf_hashinfo_destroy(&mirred_hash_info);
> unregister_netdevice_notifier(&mirred_device_notifier);
> }
>
> diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
> index 9a3cb1d..270a030 100644
> --- a/net/sched/act_nat.c
> +++ b/net/sched/act_nat.c
> @@ -31,8 +31,6 @@
>
> #define NAT_TAB_MASK 15
>
> -static struct tcf_hashinfo nat_hash_info;
> -
> static const struct nla_policy nat_policy[TCA_NAT_MAX + 1] = {
> [TCA_NAT_PARMS] = { .len = sizeof(struct tc_nat) },
> };
> @@ -284,7 +282,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_nat_ops = {
> .kind = "nat",
> - .hinfo = &nat_hash_info,
> .type = TCA_ACT_NAT,
> .owner = THIS_MODULE,
> .act = tcf_nat,
> @@ -297,16 +294,12 @@ MODULE_LICENSE("GPL");
>
> static int __init nat_init_module(void)
> {
> - int err = tcf_hashinfo_init(&nat_hash_info, NAT_TAB_MASK);
> - if (err)
> - return err;
> - return tcf_register_action(&act_nat_ops);
> + return tcf_register_action(&act_nat_ops, NAT_TAB_MASK);
> }
>
> static void __exit nat_cleanup_module(void)
> {
> tcf_unregister_action(&act_nat_ops);
> - tcf_hashinfo_destroy(&nat_hash_info);
> }
>
> module_init(nat_init_module);
> diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
> index 8aa795b..5f9bcb2 100644
> --- a/net/sched/act_pedit.c
> +++ b/net/sched/act_pedit.c
> @@ -25,8 +25,6 @@
>
> #define PEDIT_TAB_MASK 15
>
> -static struct tcf_hashinfo pedit_hash_info;
> -
> static const struct nla_policy pedit_policy[TCA_PEDIT_MAX + 1] = {
> [TCA_PEDIT_PARMS] = { .len = sizeof(struct tc_pedit) },
> };
> @@ -218,7 +216,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_pedit_ops = {
> .kind = "pedit",
> - .hinfo = &pedit_hash_info,
> .type = TCA_ACT_PEDIT,
> .owner = THIS_MODULE,
> .act = tcf_pedit,
> @@ -233,15 +230,11 @@ MODULE_LICENSE("GPL");
>
> static int __init pedit_init_module(void)
> {
> - int err = tcf_hashinfo_init(&pedit_hash_info, PEDIT_TAB_MASK);
> - if (err)
> - return err;
> - return tcf_register_action(&act_pedit_ops);
> + return tcf_register_action(&act_pedit_ops, PEDIT_TAB_MASK);
> }
>
> static void __exit pedit_cleanup_module(void)
> {
> - tcf_hashinfo_destroy(&pedit_hash_info);
> tcf_unregister_action(&act_pedit_ops);
> }
>
> diff --git a/net/sched/act_police.c b/net/sched/act_police.c
> index 7ff7bef..0566e46 100644
> --- a/net/sched/act_police.c
> +++ b/net/sched/act_police.c
> @@ -41,7 +41,6 @@ struct tcf_police {
> container_of(pc, struct tcf_police, common)
>
> #define POL_TAB_MASK 15
> -static struct tcf_hashinfo police_hash_info;
>
> /* old policer structure from before tc actions */
> struct tc_police_compat {
> @@ -234,7 +233,7 @@ override:
>
> police->tcfp_t_c = ktime_to_ns(ktime_get());
> police->tcf_index = parm->index ? parm->index :
> - tcf_hash_new_index(a->ops->hinfo);
> + tcf_hash_new_index(hinfo);
> h = tcf_hash(police->tcf_index, POL_TAB_MASK);
> spin_lock_bh(&hinfo->lock);
> hlist_add_head(&police->tcf_head, &hinfo->htab[h]);
> @@ -349,7 +348,6 @@ MODULE_LICENSE("GPL");
>
> static struct tc_action_ops act_police_ops = {
> .kind = "police",
> - .hinfo = &police_hash_info,
> .type = TCA_ID_POLICE,
> .owner = THIS_MODULE,
> .act = tcf_act_police,
> @@ -361,19 +359,12 @@ static struct tc_action_ops act_police_ops = {
> static int __init
> police_init_module(void)
> {
> - int err = tcf_hashinfo_init(&police_hash_info, POL_TAB_MASK);
> - if (err)
> - return err;
> - err = tcf_register_action(&act_police_ops);
> - if (err)
> - tcf_hashinfo_destroy(&police_hash_info);
> - return err;
> + return tcf_register_action(&act_police_ops, POL_TAB_MASK);
> }
>
> static void __exit
> police_cleanup_module(void)
> {
> - tcf_hashinfo_destroy(&police_hash_info);
> tcf_unregister_action(&act_police_ops);
> }
>
> diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
> index 14b5e36..992c231 100644
> --- a/net/sched/act_simple.c
> +++ b/net/sched/act_simple.c
> @@ -25,7 +25,6 @@
> #include <net/tc_act/tc_defact.h>
>
> #define SIMP_TAB_MASK 7
> -static struct tcf_hashinfo simp_hash_info;
>
> #define SIMP_MAX_DATA 32
> static int tcf_simp(struct sk_buff *skb, const struct tc_action *a,
> @@ -163,7 +162,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_simp_ops = {
> .kind = "simple",
> - .hinfo = &simp_hash_info,
> .type = TCA_ACT_SIMP,
> .owner = THIS_MODULE,
> .act = tcf_simp,
> @@ -178,23 +176,15 @@ MODULE_LICENSE("GPL");
>
> static int __init simp_init_module(void)
> {
> - int err, ret;
> - err = tcf_hashinfo_init(&simp_hash_info, SIMP_TAB_MASK);
> - if (err)
> - return err;
> -
> - ret = tcf_register_action(&act_simp_ops);
> + int ret;
> + ret = tcf_register_action(&act_simp_ops, SIMP_TAB_MASK);
> if (!ret)
> pr_info("Simple TC action Loaded\n");
> - else
> - tcf_hashinfo_destroy(&simp_hash_info);
> -
> return ret;
> }
>
> static void __exit simp_cleanup_module(void)
> {
> - tcf_hashinfo_destroy(&simp_hash_info);
> tcf_unregister_action(&act_simp_ops);
> }
>
> diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
> index 9f91928..fcfeeaf 100644
> --- a/net/sched/act_skbedit.c
> +++ b/net/sched/act_skbedit.c
> @@ -28,7 +28,6 @@
> #include <net/tc_act/tc_skbedit.h>
>
> #define SKBEDIT_TAB_MASK 15
> -static struct tcf_hashinfo skbedit_hash_info;
>
> static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a,
> struct tcf_result *res)
> @@ -175,7 +174,6 @@ nla_put_failure:
>
> static struct tc_action_ops act_skbedit_ops = {
> .kind = "skbedit",
> - .hinfo = &skbedit_hash_info,
> .type = TCA_ACT_SKBEDIT,
> .owner = THIS_MODULE,
> .act = tcf_skbedit,
> @@ -189,15 +187,11 @@ MODULE_LICENSE("GPL");
>
> static int __init skbedit_init_module(void)
> {
> - int err = tcf_hashinfo_init(&skbedit_hash_info, SKBEDIT_TAB_MASK);
> - if (err)
> - return err;
> - return tcf_register_action(&act_skbedit_ops);
> + return tcf_register_action(&act_skbedit_ops, SKBEDIT_TAB_MASK);
> }
>
> static void __exit skbedit_cleanup_module(void)
> {
> - tcf_hashinfo_destroy(&skbedit_hash_info);
> tcf_unregister_action(&act_skbedit_ops);
> }
>
>
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