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vxlan: make vxlan_sock_add and vxlan_sock_release complementary

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Make vxlan_sock_add both alloc the socket and attach it to vxlan_dev. Let
vxlan_sock_release accept vxlan_dev as its parameter instead of vxlan_sock.

This makes vxlan_sock_add and vxlan_sock release complementary. It reduces
code duplication in the next patch.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2015-09-24 13:50:01 +02:00 committed by David S. Miller
parent 8b7a704822
commit 205f356d16
1 changed files with 25 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/net/vxlan.c
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@ -75,8 +75,7 @@ static struct rtnl_link_ops vxlan_link_ops;
static const u8 all_zeros_mac[ETH_ALEN];
static struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
bool no_share, u32 flags);
static int vxlan_sock_add(struct vxlan_dev *vxlan);
/* per-network namespace private data for this module */
struct vxlan_net {
@ -1022,8 +1021,9 @@ static bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev)
return false;
}
static void vxlan_sock_release(struct vxlan_sock *vs)
static void vxlan_sock_release(struct vxlan_dev *vxlan)
{
struct vxlan_sock *vs = vxlan->vn_sock;
struct sock *sk = vs->sock->sk;
struct net *net = sock_net(sk);
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
@ -2244,22 +2244,18 @@ static void vxlan_uninit(struct net_device *dev)
static int vxlan_open(struct net_device *dev)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
struct vxlan_sock *vs;
int ret = 0;
int ret;
vs = vxlan_sock_add(vxlan->net, vxlan->cfg.dst_port,
vxlan->cfg.no_share, vxlan->flags);
if (IS_ERR(vs))
return PTR_ERR(vs);
vxlan_vs_add_dev(vs, vxlan);
ret = vxlan_sock_add(vxlan);
if (ret < 0)
return ret;
if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip)) {
ret = vxlan_igmp_join(vxlan);
if (ret == -EADDRINUSE)
ret = 0;
if (ret) {
vxlan_sock_release(vs);
vxlan_sock_release(vxlan);
return ret;
}
}
@ -2294,7 +2290,6 @@ static int vxlan_stop(struct net_device *dev)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
struct vxlan_net *vn = net_generic(vxlan->net, vxlan_net_id);
struct vxlan_sock *vs = vxlan->vn_sock;
int ret = 0;
if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip) &&
@ -2304,7 +2299,7 @@ static int vxlan_stop(struct net_device *dev)
del_timer_sync(&vxlan->age_timer);
vxlan_flush(vxlan);
vxlan_sock_release(vs);
vxlan_sock_release(vxlan);
return ret;
}
@ -2592,27 +2587,29 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
return vs;
}
static struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
bool no_share, u32 flags)
static int vxlan_sock_add(struct vxlan_dev *vxlan)
{
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
struct vxlan_sock *vs;
bool ipv6 = flags & VXLAN_F_IPV6;
struct vxlan_net *vn = net_generic(vxlan->net, vxlan_net_id);
struct vxlan_sock *vs = NULL;
bool ipv6 = vxlan->flags & VXLAN_F_IPV6;
if (!no_share) {
if (!vxlan->cfg.no_share) {
spin_lock(&vn->sock_lock);
vs = vxlan_find_sock(net, ipv6 ? AF_INET6 : AF_INET, port,
flags);
if (vs) {
if (!atomic_add_unless(&vs->refcnt, 1, 0))
vs = ERR_PTR(-EBUSY);
vs = vxlan_find_sock(vxlan->net, ipv6 ? AF_INET6 : AF_INET,
vxlan->cfg.dst_port, vxlan->flags);
if (vs && !atomic_add_unless(&vs->refcnt, 1, 0)) {
spin_unlock(&vn->sock_lock);
return vs;
return -EBUSY;
}
spin_unlock(&vn->sock_lock);
}
return vxlan_socket_create(net, port, flags);
if (!vs)
vs = vxlan_socket_create(vxlan->net, vxlan->cfg.dst_port,
vxlan->flags);
if (IS_ERR(vs))
return PTR_ERR(vs);
vxlan_vs_add_dev(vs, vxlan);
return 0;
}
static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,