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net: ipmr: factor out common vif init code

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Factor out common vif init code used in both tunnel and pimreg
initialization and create ipmr_init_vif_indev() function.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2015-11-21 15:57:32 +01:00 committed by David S. Miller
parent 29e97d2145
commit a0b477366a
1 changed files with 19 additions and 21 deletions
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40
net/ipv4/ipmr.c
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@ -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;