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Diffstat (limited to 'net/sched/cls_route.c')
-rw-r--r--net/sched/cls_route.c99
1 files changed, 60 insertions, 39 deletions
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index d63d5502ee02..ac9a5b8825b9 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -57,7 +57,10 @@ struct route4_filter {
u32 handle;
struct route4_bucket *bkt;
struct tcf_proto *tp;
- struct rcu_head rcu;
+ union {
+ struct work_struct work;
+ struct rcu_head rcu;
+ };
};
#define ROUTE4_FAILURE ((struct route4_filter *)(-1L))
@@ -113,7 +116,7 @@ static inline int route4_hash_wild(void)
#define ROUTE4_APPLY_RESULT() \
{ \
*res = f->res; \
- if (tcf_exts_is_available(&f->exts)) { \
+ if (tcf_exts_has_actions(&f->exts)) { \
int r = tcf_exts_exec(skb, &f->exts, res); \
if (r < 0) { \
dont_cache = 1; \
@@ -216,7 +219,7 @@ static inline u32 from_hash(u32 id)
return 16 + (id & 0xF);
}
-static unsigned long route4_get(struct tcf_proto *tp, u32 handle)
+static void *route4_get(struct tcf_proto *tp, u32 handle)
{
struct route4_head *head = rtnl_dereference(tp->root);
struct route4_bucket *b;
@@ -225,11 +228,11 @@ static unsigned long route4_get(struct tcf_proto *tp, u32 handle)
h1 = to_hash(handle);
if (h1 > 256)
- return 0;
+ return NULL;
h2 = from_hash(handle >> 16);
if (h2 > 32)
- return 0;
+ return NULL;
b = rtnl_dereference(head->table[h1]);
if (b) {
@@ -237,9 +240,9 @@ static unsigned long route4_get(struct tcf_proto *tp, u32 handle)
f;
f = rtnl_dereference(f->next))
if (f->handle == handle)
- return (unsigned long)f;
+ return f;
}
- return 0;
+ return NULL;
}
static int route4_init(struct tcf_proto *tp)
@@ -254,12 +257,28 @@ static int route4_init(struct tcf_proto *tp)
return 0;
}
+static void __route4_delete_filter(struct route4_filter *f)
+{
+ tcf_exts_destroy(&f->exts);
+ tcf_exts_put_net(&f->exts);
+ kfree(f);
+}
+
+static void route4_delete_filter_work(struct work_struct *work)
+{
+ struct route4_filter *f = container_of(work, struct route4_filter, work);
+
+ rtnl_lock();
+ __route4_delete_filter(f);
+ rtnl_unlock();
+}
+
static void route4_delete_filter(struct rcu_head *head)
{
struct route4_filter *f = container_of(head, struct route4_filter, rcu);
- tcf_exts_destroy(&f->exts);
- kfree(f);
+ INIT_WORK(&f->work, route4_delete_filter_work);
+ tcf_queue_work(&f->work);
}
static void route4_destroy(struct tcf_proto *tp)
@@ -284,7 +303,10 @@ static void route4_destroy(struct tcf_proto *tp)
next = rtnl_dereference(f->next);
RCU_INIT_POINTER(b->ht[h2], next);
tcf_unbind_filter(tp, &f->res);
- call_rcu(&f->rcu, route4_delete_filter);
+ if (tcf_exts_get_net(&f->exts))
+ call_rcu(&f->rcu, route4_delete_filter);
+ else
+ __route4_delete_filter(f);
}
}
RCU_INIT_POINTER(head->table[h1], NULL);
@@ -294,10 +316,10 @@ static void route4_destroy(struct tcf_proto *tp)
kfree_rcu(head, rcu);
}
-static int route4_delete(struct tcf_proto *tp, unsigned long arg, bool *last)
+static int route4_delete(struct tcf_proto *tp, void *arg, bool *last)
{
struct route4_head *head = rtnl_dereference(tp->root);
- struct route4_filter *f = (struct route4_filter *)arg;
+ struct route4_filter *f = arg;
struct route4_filter __rcu **fp;
struct route4_filter *nf;
struct route4_bucket *b;
@@ -325,6 +347,7 @@ static int route4_delete(struct tcf_proto *tp, unsigned long arg, bool *last)
/* Delete it */
tcf_unbind_filter(tp, &f->res);
+ tcf_exts_get_net(&f->exts);
call_rcu(&f->rcu, route4_delete_filter);
/* Strip RTNL protected tree */
@@ -372,37 +395,32 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
struct route4_filter *fp;
unsigned int h1;
struct route4_bucket *b;
- struct tcf_exts e;
int err;
- err = tcf_exts_init(&e, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE);
+ err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr);
if (err < 0)
return err;
- err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
- if (err < 0)
- goto errout;
- err = -EINVAL;
if (tb[TCA_ROUTE4_TO]) {
if (new && handle & 0x8000)
- goto errout;
+ return -EINVAL;
to = nla_get_u32(tb[TCA_ROUTE4_TO]);
if (to > 0xFF)
- goto errout;
+ return -EINVAL;
nhandle = to;
}
if (tb[TCA_ROUTE4_FROM]) {
if (tb[TCA_ROUTE4_IIF])
- goto errout;
+ return -EINVAL;
id = nla_get_u32(tb[TCA_ROUTE4_FROM]);
if (id > 0xFF)
- goto errout;
+ return -EINVAL;
nhandle |= id << 16;
} else if (tb[TCA_ROUTE4_IIF]) {
id = nla_get_u32(tb[TCA_ROUTE4_IIF]);
if (id > 0x7FFF)
- goto errout;
+ return -EINVAL;
nhandle |= (id | 0x8000) << 16;
} else
nhandle |= 0xFFFF << 16;
@@ -410,27 +428,25 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
if (handle && new) {
nhandle |= handle & 0x7F00;
if (nhandle != handle)
- goto errout;
+ return -EINVAL;
}
h1 = to_hash(nhandle);
b = rtnl_dereference(head->table[h1]);
if (!b) {
- err = -ENOBUFS;
b = kzalloc(sizeof(struct route4_bucket), GFP_KERNEL);
if (b == NULL)
- goto errout;
+ return -ENOBUFS;
rcu_assign_pointer(head->table[h1], b);
} else {
unsigned int h2 = from_hash(nhandle >> 16);
- err = -EEXIST;
for (fp = rtnl_dereference(b->ht[h2]);
fp;
fp = rtnl_dereference(fp->next))
if (fp->handle == f->handle)
- goto errout;
+ return -EEXIST;
}
if (tb[TCA_ROUTE4_TO])
@@ -450,17 +466,12 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
tcf_bind_filter(tp, &f->res, base);
}
- tcf_exts_change(tp, &f->exts, &e);
-
return 0;
-errout:
- tcf_exts_destroy(&e);
- return err;
}
static int route4_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
- struct nlattr **tca, unsigned long *arg, bool ovr)
+ struct nlattr **tca, void **arg, bool ovr)
{
struct route4_head *head = rtnl_dereference(tp->root);
struct route4_filter __rcu **fp;
@@ -479,7 +490,7 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
return err;
- fold = (struct route4_filter *)*arg;
+ fold = *arg;
if (fold && handle && fold->handle != handle)
return -EINVAL;
@@ -537,9 +548,10 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
}
route4_reset_fastmap(head);
- *arg = (unsigned long)f;
+ *arg = f;
if (fold) {
tcf_unbind_filter(tp, &fold->res);
+ tcf_exts_get_net(&fold->exts);
call_rcu(&fold->rcu, route4_delete_filter);
}
return 0;
@@ -576,7 +588,7 @@ static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg)
arg->count++;
continue;
}
- if (arg->fn(tp, (unsigned long)f, arg) < 0) {
+ if (arg->fn(tp, f, arg) < 0) {
arg->stop = 1;
return;
}
@@ -587,10 +599,10 @@ static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg)
}
}
-static int route4_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
+static int route4_dump(struct net *net, struct tcf_proto *tp, void *fh,
struct sk_buff *skb, struct tcmsg *t)
{
- struct route4_filter *f = (struct route4_filter *)fh;
+ struct route4_filter *f = fh;
struct nlattr *nest;
u32 id;
@@ -636,6 +648,14 @@ nla_put_failure:
return -1;
}
+static void route4_bind_class(void *fh, u32 classid, unsigned long cl)
+{
+ struct route4_filter *f = fh;
+
+ if (f && f->res.classid == classid)
+ f->res.class = cl;
+}
+
static struct tcf_proto_ops cls_route4_ops __read_mostly = {
.kind = "route",
.classify = route4_classify,
@@ -646,6 +666,7 @@ static struct tcf_proto_ops cls_route4_ops __read_mostly = {
.delete = route4_delete,
.walk = route4_walk,
.dump = route4_dump,
+ .bind_class = route4_bind_class,
.owner = THIS_MODULE,
};
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-08 09:08:58 +0000