dev_set_promiscuity/allmulti might overflow.
Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes
dev_set_promiscuity/allmulti return error number if overflow happened.
Here, we check the positive increment for promiscuity to get error return.
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
---
net/bridge/br_if.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index c2397f5..58bbfb8 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -375,6 +375,10 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
if (IS_ERR(p))
return PTR_ERR(p);
+ err = dev_set_promiscuity(dev, 1);
+ if (err)
+ goto put_back;
+
err = kobject_init_and_add(&p->kobj, &brport_ktype, &(dev->dev.kobj),
SYSFS_BRIDGE_PORT_ATTR);
if (err)
@@ -389,7 +393,6 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
goto err2;
rcu_assign_pointer(dev->br_port, p);
- dev_set_promiscuity(dev, 1);
list_add_rcu(&p->list, &br->port_list);
@@ -413,12 +416,12 @@ err2:
br_fdb_delete_by_port(br, p, 1);
err1:
kobject_del(&p->kobj);
- goto put_back;
err0:
kobject_put(&p->kobj);
-
+ dev_set_promiscuity(dev, -1);
put_back:
dev_put(dev);
+ kfree(p);
return err;
}
--
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