summaryrefslogtreecommitdiff
path: root/net/ipv4/ipmr.c
diff options
context:
space:
mode:
authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2015-11-21 15:57:32 +0100
committerDavid S. Miller <davem@davemloft.net>2015-11-23 15:06:39 -0500
commita0b477366a9550ae46f78caa9e55de34fac4ba9c (patch)
tree78a1d5bf37775537145e6fb3742ea474ff4332db /net/ipv4/ipmr.c
parent29e97d214509ef4977838e073d30f6b16f75c6d5 (diff)
net: ipmr: factor out common vif init code
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>
Diffstat (limited to 'net/ipv4/ipmr.c')
-rw-r--r--net/ipv4/ipmr.c40
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;