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Message-ID: <20070914110647.GA7369@iris.sw.ru>
Date: Fri, 14 Sep 2007 15:06:47 +0400
From: "Denis V. Lunev" <den@...nvz.org>
To: davem@...emloft.net
Cc: kuznet@....inr.ac.ru, netdev@...r.kernel.org, devel@...nvz.org,
dev@...nvz.org, den@...nvz.org
Subject: [PATCH] small cleanup for fib rules
From: Denis V. Lunev <den@...nvz.org>
This patch slightly cleanups FIB rules framework. rules_list as a pointer
on struct fib_rules_ops is useless. It is always assigned with a static
per/subsystem list in IPv4, IPv6 and DecNet.
Signed-off-by: Denis V. Lunev <den@...nvz.org>
Acked-by: Alexey Kuznetsov <kuznet@....inr.ac.ru>
---------
include/net/fib_rules.h | 2 +-
net/core/fib_rules.c | 22 +++++++++++-----------
net/decnet/dn_rules.c | 13 ++++++-------
net/ipv4/fib_rules.c | 16 +++++++---------
net/ipv6/fib6_rules.c | 8 +++-----
5 files changed, 28 insertions(+), 33 deletions(-)
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 83e41dd..017aebd 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -65,7 +65,7 @@ struct fib_rules_ops
int nlgroup;
const struct nla_policy *policy;
- struct list_head *rules_list;
+ struct list_head rules_list;
struct module *owner;
};
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 8c5474e..051cca1 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -82,7 +82,7 @@ static void cleanup_ops(struct fib_rules_ops *ops)
{
struct fib_rule *rule, *tmp;
- list_for_each_entry_safe(rule, tmp, ops->rules_list, list) {
+ list_for_each_entry_safe(rule, tmp, &ops->rules_list, list) {
list_del_rcu(&rule->list);
fib_rule_put(rule);
}
@@ -137,7 +137,7 @@ int fib_rules_lookup(struct fib_rules_ops *ops, struct flowi *fl,
rcu_read_lock();
- list_for_each_entry_rcu(rule, ops->rules_list, list) {
+ list_for_each_entry_rcu(rule, &ops->rules_list, list) {
jumped:
if (!fib_rule_match(rule, ops, fl, flags))
continue;
@@ -268,7 +268,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (rule->target <= rule->pref)
goto errout_free;
- list_for_each_entry(r, ops->rules_list, list) {
+ list_for_each_entry(r, &ops->rules_list, list) {
if (r->pref == rule->target) {
rule->ctarget = r;
break;
@@ -284,7 +284,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (err < 0)
goto errout_free;
- list_for_each_entry(r, ops->rules_list, list) {
+ list_for_each_entry(r, &ops->rules_list, list) {
if (r->pref > rule->pref)
break;
last = r;
@@ -297,7 +297,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
* There are unresolved goto rules in the list, check if
* any of them are pointing to this new rule.
*/
- list_for_each_entry(r, ops->rules_list, list) {
+ list_for_each_entry(r, &ops->rules_list, list) {
if (r->action == FR_ACT_GOTO &&
r->target == rule->pref) {
BUG_ON(r->ctarget != NULL);
@@ -317,7 +317,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (last)
list_add_rcu(&rule->list, &last->list);
else
- list_add_rcu(&rule->list, ops->rules_list);
+ list_add_rcu(&rule->list, &ops->rules_list);
notify_rule_change(RTM_NEWRULE, rule, ops, nlh, NETLINK_CB(skb).pid);
flush_route_cache(ops);
@@ -356,7 +356,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
if (err < 0)
goto errout;
- list_for_each_entry(rule, ops->rules_list, list) {
+ list_for_each_entry(rule, &ops->rules_list, list) {
if (frh->action && (frh->action != rule->action))
continue;
@@ -399,7 +399,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
* actually been added.
*/
if (ops->nr_goto_rules > 0) {
- list_for_each_entry(tmp, ops->rules_list, list) {
+ list_for_each_entry(tmp, &ops->rules_list, list) {
if (tmp->ctarget == rule) {
rcu_assign_pointer(tmp->ctarget, NULL);
ops->unresolved_rules++;
@@ -495,7 +495,7 @@ static int dump_rules(struct sk_buff *skb, struct netlink_callback *cb,
int idx = 0;
struct fib_rule *rule;
- list_for_each_entry(rule, ops->rules_list, list) {
+ list_for_each_entry(rule, &ops->rules_list, list) {
if (idx < cb->args[1])
goto skip;
@@ -602,12 +602,12 @@ static int fib_rules_event(struct notifier_block *this, unsigned long event,
switch (event) {
case NETDEV_REGISTER:
list_for_each_entry(ops, &rules_ops, list)
- attach_rules(ops->rules_list, dev);
+ attach_rules(&ops->rules_list, dev);
break;
case NETDEV_UNREGISTER:
list_for_each_entry(ops, &rules_ops, list)
- detach_rules(ops->rules_list, dev);
+ detach_rules(&ops->rules_list, dev);
break;
}
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 84ff3dd..4188d4a 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -57,8 +56,6 @@ static struct dn_fib_rule default_rule = {
},
};
-static LIST_HEAD(dn_fib_rules);
-
int dn_fib_lookup(struct flowi *flp, struct dn_fib_res *res)
{
@@ -228,9 +225,9 @@ static u32 dn_fib_rule_default_pref(void)
struct list_head *pos;
struct fib_rule *rule;
- if (!list_empty(&dn_fib_rules)) {
- pos = dn_fib_rules.next;
- if (pos->next != &dn_fib_rules) {
+ if (!list_empty(&dn_fib_rules_ops.rules_list)) {
+ pos = dn_fib_rules_ops.rules_list.next;
+ if (pos->next != &dn_fib_rules_ops.rules_list) {
rule = list_entry(pos->next, struct fib_rule, list);
if (rule->pref)
return rule->pref - 1;
@@ -258,13 +255,14 @@ static struct fib_rules_ops dn_fib_rules_ops = {
.flush_cache = dn_fib_rule_flush_cache,
.nlgroup = RTNLGRP_DECnet_RULE,
.policy = dn_fib_rule_policy,
- .rules_list = &dn_fib_rules,
+ .rules_list = LIST_HEAD_INIT(dn_fib_rules_ops.rules_list),
.owner = THIS_MODULE,
};
void __init dn_fib_rules_init(void)
{
- list_add_tail(&default_rule.common.list, &dn_fib_rules);
+ list_add_tail(&default_rule.common.list,
+ &dn_fib_rules_ops.rules_list);
fib_rules_register(&dn_fib_rules_ops);
}
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 2a94784..f16839c 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -76,8 +76,6 @@ static struct fib4_rule local_rule = {
},
};
-static LIST_HEAD(fib4_rules);
-
#ifdef CONFIG_NET_CLS_ROUTE
u32 fib_rules_tclass(struct fib_result *res)
{
@@ -279,9 +277,9 @@ static u32 fib4_rule_default_pref(void)
struct list_head *pos;
struct fib_rule *rule;
- if (!list_empty(&fib4_rules)) {
- pos = fib4_rules.next;
- if (pos->next != &fib4_rules) {
+ if (!list_empty(&fib4_rules_ops.rules_list)) {
+ pos = fib4_rules_ops.rules_list.next;
+ if (pos->next != &fib4_rules_ops.rules_list) {
rule = list_entry(pos->next, struct fib_rule, list);
if (rule->pref)
return rule->pref - 1;
@@ -317,15 +315,15 @@ static struct fib_rules_ops fib4_rules_ops = {
.flush_cache = fib4_rule_flush_cache,
.nlgroup = RTNLGRP_IPV4_RULE,
.policy = fib4_rule_policy,
- .rules_list = &fib4_rules,
+ .rules_list = LIST_HEAD_INIT(fib4_rules_ops.rules_list),
.owner = THIS_MODULE,
};
void __init fib4_rules_init(void)
{
- list_add_tail(&local_rule.common.list, &fib4_rules);
- list_add_tail(&main_rule.common.list, &fib4_rules);
- list_add_tail(&default_rule.common.list, &fib4_rules);
+ list_add_tail(&local_rule.common.list, &fib4_rules_ops.rules_list);
+ list_add_tail(&main_rule.common.list, &fib4_rules_ops.rules_list);
+ list_add_tail(&default_rule.common.list, &fib4_rules_ops.rules_list);
fib_rules_register(&fib4_rules_ops);
}
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 53b3998..706622a 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -50,8 +50,6 @@ static struct fib6_rule local_rule = {
},
};
-static LIST_HEAD(fib6_rules);
-
struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
pol_lookup_t lookup)
{
@@ -268,14 +266,14 @@ static struct fib_rules_ops fib6_rules_ops = {
.nlmsg_payload = fib6_rule_nlmsg_payload,
.nlgroup = RTNLGRP_IPV6_RULE,
.policy = fib6_rule_policy,
- .rules_list = &fib6_rules,
+ .rules_list = LIST_HEAD_INIT(fib6_rules_ops.rules_list),
.owner = THIS_MODULE,
};
void __init fib6_rules_init(void)
{
- list_add_tail(&local_rule.common.list, &fib6_rules);
- list_add_tail(&main_rule.common.list, &fib6_rules);
+ list_add_tail(&local_rule.common.list, &fib6_rules_ops.rules_list);
+ list_add_tail(&main_rule.common.list, &fib6_rules_ops.rules_list);
fib_rules_register(&fib6_rules_ops);
}
-
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