Release 4.11 net/ipv4/udp_tunnel.c
#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;
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom Herbert | 215 | 98.17% | 1 | 25.00% |
| Eric W. Biedermann | 3 | 1.37% | 2 | 50.00% |
| Andy Zhou | 1 | 0.46% | 1 | 25.00% |
| Total | 219 | 100.00% | 4 | 100.00% |
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_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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Zhou | 91 | 79.82% | 1 | 33.33% |
| Tom Herbert | 23 | 20.18% | 2 | 66.67% |
| Total | 114 | 100.00% | 3 | 100.00% |
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)
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexander Duyck | 79 | 100.00% | 2 | 100.00% |
| Total | 79 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(udp_tunnel_push_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;
dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
}
rcu_read_unlock();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexander Duyck | 103 | 100.00% | 3 | 100.00% |
| Total | 103 | 100.00% | 3 | 100.00% |
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;
dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
}
rcu_read_unlock();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexander Duyck | 103 | 100.00% | 2 | 100.00% |
| Total | 103 | 100.00% | 2 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Zhou | 125 | 77.64% | 1 | 20.00% |
| Bernie Harris | 25 | 15.53% | 1 | 20.00% |
| David S. Miller | 5 | 3.11% | 1 | 20.00% |
| Tom Herbert | 4 | 2.48% | 1 | 20.00% |
| Pravin B Shelar | 2 | 1.24% | 1 | 20.00% |
| Total | 161 | 100.00% | 5 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Zhou | 30 | 96.77% | 1 | 50.00% |
| Eric W. Biedermann | 1 | 3.23% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pravin B Shelar | 131 | 100.00% | 1 | 100.00% |
| Total | 131 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(udp_tun_rx_dst);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexander Duyck | 302 | 29.67% | 3 | 20.00% |
| Tom Herbert | 275 | 27.01% | 4 | 26.67% |
| Andy Zhou | 263 | 25.83% | 2 | 13.33% |
| Pravin B Shelar | 144 | 14.15% | 2 | 13.33% |
| Bernie Harris | 25 | 2.46% | 1 | 6.67% |
| David S. Miller | 5 | 0.49% | 1 | 6.67% |
| Eric W. Biedermann | 4 | 0.39% | 2 | 13.33% |
| Total | 1018 | 100.00% | 15 | 100.00% |
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