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Diffstat (limited to 'net/ipv4/fib_rules.c')
-rw-r--r--net/ipv4/fib_rules.c81
1 files changed, 46 insertions, 35 deletions
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index a0ada3a8d8d..19274d01afa 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -32,8 +32,6 @@
#include <net/ip_fib.h>
#include <net/fib_rules.h>
-static struct fib_rules_ops fib4_rules_ops;
-
struct fib4_rule
{
struct fib_rule common;
@@ -56,14 +54,14 @@ u32 fib_rules_tclass(struct fib_result *res)
}
#endif
-int fib_lookup(struct flowi *flp, struct fib_result *res)
+int fib_lookup(struct net *net, struct flowi *flp, struct fib_result *res)
{
struct fib_lookup_arg arg = {
.result = res,
};
int err;
- err = fib_rules_lookup(&fib4_rules_ops, flp, 0, &arg);
+ err = fib_rules_lookup(net->ipv4.rules_ops, flp, 0, &arg);
res->r = arg.rule;
return err;
@@ -93,7 +91,7 @@ static int fib4_rule_action(struct fib_rule *rule, struct flowi *flp,
goto errout;
}
- if ((tbl = fib_get_table(rule->table)) == NULL)
+ if ((tbl = fib_get_table(rule->fr_net, rule->table)) == NULL)
goto errout;
err = tbl->tb_lookup(tbl, flp, (struct fib_result *) arg->result);
@@ -104,16 +102,6 @@ errout:
}
-void fib_select_default(const struct flowi *flp, struct fib_result *res)
-{
- if (res->r && res->r->action == FR_ACT_TO_TBL &&
- FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK) {
- struct fib_table *tb;
- if ((tb = fib_get_table(res->r->table)) != NULL)
- tb->tb_select_default(tb, flp, res);
- }
-}
-
static int fib4_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
{
struct fib4_rule *r = (struct fib4_rule *) rule;
@@ -130,13 +118,13 @@ static int fib4_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
return 1;
}
-static struct fib_table *fib_empty_table(void)
+static struct fib_table *fib_empty_table(struct net *net)
{
u32 id;
for (id = 1; id <= RT_TABLE_MAX; id++)
- if (fib_get_table(id) == NULL)
- return fib_new_table(id);
+ if (fib_get_table(net, id) == NULL)
+ return fib_new_table(net, id);
return NULL;
}
@@ -149,6 +137,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
struct nlmsghdr *nlh, struct fib_rule_hdr *frh,
struct nlattr **tb)
{
+ struct net *net = skb->sk->sk_net;
int err = -EINVAL;
struct fib4_rule *rule4 = (struct fib4_rule *) rule;
@@ -159,7 +148,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
if (rule->action == FR_ACT_TO_TBL) {
struct fib_table *table;
- table = fib_empty_table();
+ table = fib_empty_table(net);
if (table == NULL) {
err = -ENOBUFS;
goto errout;
@@ -245,14 +234,14 @@ nla_put_failure:
return -ENOBUFS;
}
-static u32 fib4_rule_default_pref(void)
+static u32 fib4_rule_default_pref(struct fib_rules_ops *ops)
{
struct list_head *pos;
struct fib_rule *rule;
- if (!list_empty(&fib4_rules_ops.rules_list)) {
- pos = fib4_rules_ops.rules_list.next;
- if (pos->next != &fib4_rules_ops.rules_list) {
+ if (!list_empty(&ops->rules_list)) {
+ pos = ops->rules_list.next;
+ if (pos->next != &ops->rules_list) {
rule = list_entry(pos->next, struct fib_rule, list);
if (rule->pref)
return rule->pref - 1;
@@ -274,7 +263,7 @@ static void fib4_rule_flush_cache(void)
rt_cache_flush(-1);
}
-static struct fib_rules_ops fib4_rules_ops = {
+static struct fib_rules_ops fib4_rules_ops_template = {
.family = AF_INET,
.rule_size = sizeof(struct fib4_rule),
.addr_size = sizeof(u32),
@@ -288,31 +277,53 @@ static struct fib_rules_ops fib4_rules_ops = {
.flush_cache = fib4_rule_flush_cache,
.nlgroup = RTNLGRP_IPV4_RULE,
.policy = fib4_rule_policy,
- .rules_list = LIST_HEAD_INIT(fib4_rules_ops.rules_list),
.owner = THIS_MODULE,
};
-static int __init fib_default_rules_init(void)
+static int fib_default_rules_init(struct fib_rules_ops *ops)
{
int err;
- err = fib_default_rule_add(&fib4_rules_ops, 0,
- RT_TABLE_LOCAL, FIB_RULE_PERMANENT);
+ err = fib_default_rule_add(ops, 0, RT_TABLE_LOCAL, FIB_RULE_PERMANENT);
if (err < 0)
return err;
- err = fib_default_rule_add(&fib4_rules_ops, 0x7FFE,
- RT_TABLE_MAIN, 0);
+ err = fib_default_rule_add(ops, 0x7FFE, RT_TABLE_MAIN, 0);
if (err < 0)
return err;
- err = fib_default_rule_add(&fib4_rules_ops, 0x7FFF,
- RT_TABLE_DEFAULT, 0);
+ err = fib_default_rule_add(ops, 0x7FFF, RT_TABLE_DEFAULT, 0);
if (err < 0)
return err;
return 0;
}
-void __init fib4_rules_init(void)
+int __net_init fib4_rules_init(struct net *net)
+{
+ int err;
+ struct fib_rules_ops *ops;
+
+ ops = kmemdup(&fib4_rules_ops_template, sizeof(*ops), GFP_KERNEL);
+ if (ops == NULL)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&ops->rules_list);
+ ops->fro_net = net;
+
+ fib_rules_register(ops);
+
+ err = fib_default_rules_init(ops);
+ if (err < 0)
+ goto fail;
+ net->ipv4.rules_ops = ops;
+ return 0;
+
+fail:
+ /* also cleans all rules already added */
+ fib_rules_unregister(ops);
+ kfree(ops);
+ return err;
+}
+
+void __net_exit fib4_rules_exit(struct net *net)
{
- BUG_ON(fib_default_rules_init());
- fib_rules_register(&fib4_rules_ops);
+ fib_rules_unregister(net->ipv4.rules_ops);
+ kfree(net->ipv4.rules_ops);
}