forked from Minki/linux
vxlan_multicast: Move multicast helpers to a separate file
subsequent patches will add more helpers. Signed-off-by: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu
David S. Miller
parent
7b8135f4df
commit
a498c5953a
@ -4,4 +4,4 @@
|
||||
|
||||
obj-$(CONFIG_VXLAN) += vxlan.o
|
||||
|
||||
vxlan-objs := vxlan_core.o
|
||||
vxlan-objs := vxlan_core.o vxlan_multicast.o
|
||||
|
||||
@ -1445,58 +1445,6 @@ static bool vxlan_snoop(struct net_device *dev,
|
||||
return false;
|
||||
}
|
||||
|
||||
/* See if multicast group is already in use by other ID */
|
||||
static bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev,
|
||||
union vxlan_addr *rip, int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &dev->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : dev->default_dst.remote_ifindex);
|
||||
struct vxlan_dev *vxlan;
|
||||
struct vxlan_sock *sock4;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
struct vxlan_sock *sock6;
|
||||
#endif
|
||||
unsigned short family = dev->default_dst.remote_ip.sa.sa_family;
|
||||
|
||||
sock4 = rtnl_dereference(dev->vn4_sock);
|
||||
|
||||
/* The vxlan_sock is only used by dev, leaving group has
|
||||
* no effect on other vxlan devices.
|
||||
*/
|
||||
if (family == AF_INET && sock4 && refcount_read(&sock4->refcnt) == 1)
|
||||
return false;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
sock6 = rtnl_dereference(dev->vn6_sock);
|
||||
if (family == AF_INET6 && sock6 && refcount_read(&sock6->refcnt) == 1)
|
||||
return false;
|
||||
#endif
|
||||
|
||||
list_for_each_entry(vxlan, &vn->vxlan_list, next) {
|
||||
if (!netif_running(vxlan->dev) || vxlan == dev)
|
||||
continue;
|
||||
|
||||
if (family == AF_INET &&
|
||||
rtnl_dereference(vxlan->vn4_sock) != sock4)
|
||||
continue;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (family == AF_INET6 &&
|
||||
rtnl_dereference(vxlan->vn6_sock) != sock6)
|
||||
continue;
|
||||
#endif
|
||||
|
||||
if (!vxlan_addr_equal(&vxlan->default_dst.remote_ip,
|
||||
ip))
|
||||
continue;
|
||||
|
||||
if (vxlan->default_dst.remote_ifindex != ifindex)
|
||||
continue;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool __vxlan_sock_release_prep(struct vxlan_sock *vs)
|
||||
{
|
||||
struct vxlan_net *vn;
|
||||
@ -1545,77 +1493,6 @@ static void vxlan_sock_release(struct vxlan_dev *vxlan)
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Update multicast group membership when first VNI on
|
||||
* multicast address is brought up
|
||||
*/
|
||||
static int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
|
||||
int ret = -EINVAL;
|
||||
struct sock *sk;
|
||||
|
||||
if (ip->sa.sa_family == AF_INET) {
|
||||
struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
|
||||
struct ip_mreqn mreq = {
|
||||
.imr_multiaddr.s_addr = ip->sin.sin_addr.s_addr,
|
||||
.imr_ifindex = ifindex,
|
||||
};
|
||||
|
||||
sk = sock4->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ip_mc_join_group(sk, &mreq);
|
||||
release_sock(sk);
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
} else {
|
||||
struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
|
||||
|
||||
sk = sock6->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ipv6_stub->ipv6_sock_mc_join(sk, ifindex,
|
||||
&ip->sin6.sin6_addr);
|
||||
release_sock(sk);
|
||||
#endif
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
|
||||
int ret = -EINVAL;
|
||||
struct sock *sk;
|
||||
|
||||
if (ip->sa.sa_family == AF_INET) {
|
||||
struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
|
||||
struct ip_mreqn mreq = {
|
||||
.imr_multiaddr.s_addr = ip->sin.sin_addr.s_addr,
|
||||
.imr_ifindex = ifindex,
|
||||
};
|
||||
|
||||
sk = sock4->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ip_mc_leave_group(sk, &mreq);
|
||||
release_sock(sk);
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
} else {
|
||||
struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
|
||||
|
||||
sk = sock6->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ipv6_stub->ipv6_sock_mc_drop(sk, ifindex,
|
||||
&ip->sin6.sin6_addr);
|
||||
release_sock(sk);
|
||||
#endif
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static bool vxlan_remcsum(struct vxlanhdr *unparsed,
|
||||
struct sk_buff *skb, u32 vxflags)
|
||||
{
|
||||
|
||||
134
drivers/net/vxlan/vxlan_multicast.c
Normal file
134
drivers/net/vxlan/vxlan_multicast.c
Normal file
@ -0,0 +1,134 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* Vxlan multicast group handling
|
||||
*
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <net/net_namespace.h>
|
||||
#include <net/sock.h>
|
||||
#include <linux/igmp.h>
|
||||
#include <net/vxlan.h>
|
||||
|
||||
#include "vxlan_private.h"
|
||||
|
||||
/* Update multicast group membership when first VNI on
|
||||
* multicast address is brought up
|
||||
*/
|
||||
int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
|
||||
int ret = -EINVAL;
|
||||
struct sock *sk;
|
||||
|
||||
if (ip->sa.sa_family == AF_INET) {
|
||||
struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
|
||||
struct ip_mreqn mreq = {
|
||||
.imr_multiaddr.s_addr = ip->sin.sin_addr.s_addr,
|
||||
.imr_ifindex = ifindex,
|
||||
};
|
||||
|
||||
sk = sock4->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ip_mc_join_group(sk, &mreq);
|
||||
release_sock(sk);
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
} else {
|
||||
struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
|
||||
|
||||
sk = sock6->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ipv6_stub->ipv6_sock_mc_join(sk, ifindex,
|
||||
&ip->sin6.sin6_addr);
|
||||
release_sock(sk);
|
||||
#endif
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
|
||||
int ret = -EINVAL;
|
||||
struct sock *sk;
|
||||
|
||||
if (ip->sa.sa_family == AF_INET) {
|
||||
struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
|
||||
struct ip_mreqn mreq = {
|
||||
.imr_multiaddr.s_addr = ip->sin.sin_addr.s_addr,
|
||||
.imr_ifindex = ifindex,
|
||||
};
|
||||
|
||||
sk = sock4->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ip_mc_leave_group(sk, &mreq);
|
||||
release_sock(sk);
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
} else {
|
||||
struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
|
||||
|
||||
sk = sock6->sock->sk;
|
||||
lock_sock(sk);
|
||||
ret = ipv6_stub->ipv6_sock_mc_drop(sk, ifindex,
|
||||
&ip->sin6.sin6_addr);
|
||||
release_sock(sk);
|
||||
#endif
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* See if multicast group is already in use by other ID */
|
||||
bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev,
|
||||
union vxlan_addr *rip, int rifindex)
|
||||
{
|
||||
union vxlan_addr *ip = (rip ? : &dev->default_dst.remote_ip);
|
||||
int ifindex = (rifindex ? : dev->default_dst.remote_ifindex);
|
||||
struct vxlan_dev *vxlan;
|
||||
struct vxlan_sock *sock4;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
struct vxlan_sock *sock6;
|
||||
#endif
|
||||
unsigned short family = dev->default_dst.remote_ip.sa.sa_family;
|
||||
|
||||
sock4 = rtnl_dereference(dev->vn4_sock);
|
||||
|
||||
/* The vxlan_sock is only used by dev, leaving group has
|
||||
* no effect on other vxlan devices.
|
||||
*/
|
||||
if (family == AF_INET && sock4 && refcount_read(&sock4->refcnt) == 1)
|
||||
return false;
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
sock6 = rtnl_dereference(dev->vn6_sock);
|
||||
if (family == AF_INET6 && sock6 && refcount_read(&sock6->refcnt) == 1)
|
||||
return false;
|
||||
#endif
|
||||
|
||||
list_for_each_entry(vxlan, &vn->vxlan_list, next) {
|
||||
if (!netif_running(vxlan->dev) || vxlan == dev)
|
||||
continue;
|
||||
|
||||
if (family == AF_INET &&
|
||||
rtnl_dereference(vxlan->vn4_sock) != sock4)
|
||||
continue;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (family == AF_INET6 &&
|
||||
rtnl_dereference(vxlan->vn6_sock) != sock6)
|
||||
continue;
|
||||
#endif
|
||||
if (!vxlan_addr_equal(&vxlan->default_dst.remote_ip, ip))
|
||||
continue;
|
||||
|
||||
if (vxlan->default_dst.remote_ifindex != ifindex)
|
||||
continue;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
@ -112,4 +112,11 @@ int vxlan_fdb_update(struct vxlan_dev *vxlan,
|
||||
__u32 ifindex, __u16 ndm_flags, u32 nhid,
|
||||
bool swdev_notify, struct netlink_ext_ack *extack);
|
||||
|
||||
/* vxlan_multicast.c */
|
||||
int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex);
|
||||
int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
|
||||
int rifindex);
|
||||
bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev,
|
||||
union vxlan_addr *rip, int rifindex);
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user