diff options
Diffstat (limited to 'net/ipv4/ipmr.c')
| -rw-r--r-- | net/ipv4/ipmr.c | 40 |
1 files changed, 19 insertions, 21 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index e384f39202cb..a2d248d9c35c 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -391,6 +391,23 @@ static void ipmr_del_tunnel(struct net_device *dev, struct vifctl *v) } } +/* Initialize ipmr pimreg/tunnel in_device */ +static bool ipmr_init_vif_indev(const struct net_device *dev) +{ + struct in_device *in_dev; + + ASSERT_RTNL(); + + in_dev = __in_dev_get_rtnl(dev); + if (!in_dev) + return false; + ipv4_devconf_setall(in_dev); + neigh_parms_data_state_setall(in_dev->arp_parms); + IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0; + + return true; +} + static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) { struct net_device *dev; @@ -402,7 +419,6 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) int err; struct ifreq ifr; struct ip_tunnel_parm p; - struct in_device *in_dev; memset(&p, 0, sizeof(p)); p.iph.daddr = v->vifc_rmt_addr.s_addr; @@ -427,15 +443,8 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) if (err == 0 && (dev = __dev_get_by_name(net, p.name)) != NULL) { dev->flags |= IFF_MULTICAST; - - in_dev = __in_dev_get_rtnl(dev); - if (!in_dev) + if (!ipmr_init_vif_indev(dev)) goto failure; - - ipv4_devconf_setall(in_dev); - neigh_parms_data_state_setall(in_dev->arp_parms); - IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0; - if (dev_open(dev)) goto failure; dev_hold(dev); @@ -502,7 +511,6 @@ static void reg_vif_setup(struct net_device *dev) static struct net_device *ipmr_reg_vif(struct net *net, struct mr_table *mrt) { struct net_device *dev; - struct in_device *in_dev; char name[IFNAMSIZ]; if (mrt->id == RT_TABLE_DEFAULT) @@ -522,18 +530,8 @@ static struct net_device *ipmr_reg_vif(struct net *net, struct mr_table *mrt) return NULL; } - rcu_read_lock(); - in_dev = __in_dev_get_rcu(dev); - if (!in_dev) { - rcu_read_unlock(); + if (!ipmr_init_vif_indev(dev)) goto failure; - } - - ipv4_devconf_setall(in_dev); - neigh_parms_data_state_setall(in_dev->arp_parms); - IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0; - rcu_read_unlock(); - if (dev_open(dev)) goto failure; |