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Diffstat (limited to 'net/ipv4/udp_tunnel.c')
-rw-r--r--net/ipv4/udp_tunnel.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/net/ipv4/udp_tunnel.c b/net/ipv4/udp_tunnel.c
deleted file mode 100644
index 3eecba0874aa..000000000000
--- a/net/ipv4/udp_tunnel.c
+++ /dev/null
@@ -1,224 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/socket.h>
-#include <linux/udp.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <net/dst_metadata.h>
-#include <net/net_namespace.h>
-#include <net/udp.h>
-#include <net/udp_tunnel.h>
-
-int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
- struct socket **sockp)
-{
- int err;
- struct socket *sock = NULL;
- struct sockaddr_in udp_addr;
-
- err = sock_create_kern(net, AF_INET, SOCK_DGRAM, 0, &sock);
- if (err < 0)
- goto error;
-
- if (cfg->bind_ifindex) {
- err = sock_bindtoindex(sock->sk, cfg->bind_ifindex, true);
- if (err < 0)
- goto error;
- }
-
- udp_addr.sin_family = AF_INET;
- udp_addr.sin_addr = cfg->local_ip;
- udp_addr.sin_port = cfg->local_udp_port;
- err = kernel_bind(sock, (struct sockaddr *)&udp_addr,
- sizeof(udp_addr));
- if (err < 0)
- goto error;
-
- if (cfg->peer_udp_port) {
- udp_addr.sin_family = AF_INET;
- udp_addr.sin_addr = cfg->peer_ip;
- udp_addr.sin_port = cfg->peer_udp_port;
- err = kernel_connect(sock, (struct sockaddr *)&udp_addr,
- sizeof(udp_addr), 0);
- if (err < 0)
- goto error;
- }
-
- sock->sk->sk_no_check_tx = !cfg->use_udp_checksums;
-
- *sockp = sock;
- return 0;
-
-error:
- if (sock) {
- kernel_sock_shutdown(sock, SHUT_RDWR);
- sock_release(sock);
- }
- *sockp = NULL;
- return err;
-}
-EXPORT_SYMBOL(udp_sock_create4);
-
-void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
- struct udp_tunnel_sock_cfg *cfg)
-{
- struct sock *sk = sock->sk;
-
- /* Disable multicast loopback */
- inet_sk(sk)->mc_loop = 0;
-
- /* Enable CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE conversion */
- inet_inc_convert_csum(sk);
-
- rcu_assign_sk_user_data(sk, cfg->sk_user_data);
-
- udp_sk(sk)->encap_type = cfg->encap_type;
- udp_sk(sk)->encap_rcv = cfg->encap_rcv;
- udp_sk(sk)->encap_err_lookup = cfg->encap_err_lookup;
- udp_sk(sk)->encap_destroy = cfg->encap_destroy;
- udp_sk(sk)->gro_receive = cfg->gro_receive;
- udp_sk(sk)->gro_complete = cfg->gro_complete;
-
- udp_tunnel_encap_enable(sock);
-}
-EXPORT_SYMBOL_GPL(setup_udp_tunnel_sock);
-
-void udp_tunnel_push_rx_port(struct net_device *dev, struct socket *sock,
- unsigned short type)
-{
- struct sock *sk = sock->sk;
- struct udp_tunnel_info ti;
-
- if (!dev->netdev_ops->ndo_udp_tunnel_add ||
- !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
- return;
-
- ti.type = type;
- ti.sa_family = sk->sk_family;
- ti.port = inet_sk(sk)->inet_sport;
-
- dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_push_rx_port);
-
-void udp_tunnel_drop_rx_port(struct net_device *dev, struct socket *sock,
- unsigned short type)
-{
- struct sock *sk = sock->sk;
- struct udp_tunnel_info ti;
-
- if (!dev->netdev_ops->ndo_udp_tunnel_del ||
- !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
- return;
-
- ti.type = type;
- ti.sa_family = sk->sk_family;
- ti.port = inet_sk(sk)->inet_sport;
-
- dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_drop_rx_port);
-
-/* Notify netdevs that UDP port started listening */
-void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned short type)
-{
- struct sock *sk = sock->sk;
- struct net *net = sock_net(sk);
- struct udp_tunnel_info ti;
- struct net_device *dev;
-
- ti.type = type;
- ti.sa_family = sk->sk_family;
- ti.port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (!dev->netdev_ops->ndo_udp_tunnel_add)
- continue;
- if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
- continue;
- dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
- }
- rcu_read_unlock();
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_notify_add_rx_port);
-
-/* Notify netdevs that UDP port is no more listening */
-void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned short type)
-{
- struct sock *sk = sock->sk;
- struct net *net = sock_net(sk);
- struct udp_tunnel_info ti;
- struct net_device *dev;
-
- ti.type = type;
- ti.sa_family = sk->sk_family;
- ti.port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (!dev->netdev_ops->ndo_udp_tunnel_del)
- continue;
- if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
- continue;
- dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
- }
- rcu_read_unlock();
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_notify_del_rx_port);
-
-void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
- __be32 src, __be32 dst, __u8 tos, __u8 ttl,
- __be16 df, __be16 src_port, __be16 dst_port,
- bool xnet, bool nocheck)
-{
- struct udphdr *uh;
-
- __skb_push(skb, sizeof(*uh));
- skb_reset_transport_header(skb);
- uh = udp_hdr(skb);
-
- uh->dest = dst_port;
- uh->source = src_port;
- uh->len = htons(skb->len);
-
- memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
-
- udp_set_csum(nocheck, skb, src, dst, skb->len);
-
- iptunnel_xmit(sk, rt, skb, src, dst, IPPROTO_UDP, tos, ttl, df, xnet);
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_xmit_skb);
-
-void udp_tunnel_sock_release(struct socket *sock)
-{
- rcu_assign_sk_user_data(sock->sk, NULL);
- kernel_sock_shutdown(sock, SHUT_RDWR);
- sock_release(sock);
-}
-EXPORT_SYMBOL_GPL(udp_tunnel_sock_release);
-
-struct metadata_dst *udp_tun_rx_dst(struct sk_buff *skb, unsigned short family,
- __be16 flags, __be64 tunnel_id, int md_size)
-{
- struct metadata_dst *tun_dst;
- struct ip_tunnel_info *info;
-
- if (family == AF_INET)
- tun_dst = ip_tun_rx_dst(skb, flags, tunnel_id, md_size);
- else
- tun_dst = ipv6_tun_rx_dst(skb, flags, tunnel_id, md_size);
- if (!tun_dst)
- return NULL;
-
- info = &tun_dst->u.tun_info;
- info->key.tp_src = udp_hdr(skb)->source;
- info->key.tp_dst = udp_hdr(skb)->dest;
- if (udp_hdr(skb)->check)
- info->key.tun_flags |= TUNNEL_CSUM;
- return tun_dst;
-}
-EXPORT_SYMBOL_GPL(udp_tun_rx_dst);
-
-MODULE_LICENSE("GPL");
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