diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/ipv4/udp_tunnel.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/ipv4/udp_tunnel.c')
-rw-r--r-- | kernel/net/ipv4/udp_tunnel.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/kernel/net/ipv4/udp_tunnel.c b/kernel/net/ipv4/udp_tunnel.c new file mode 100644 index 000000000..6bb98cc19 --- /dev/null +++ b/kernel/net/ipv4/udp_tunnel.c @@ -0,0 +1,108 @@ +#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/udp.h> +#include <net/udp_tunnel.h> +#include <net/net_namespace.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(AF_INET, SOCK_DGRAM, 0, &sock); + if (err < 0) + goto error; + + sk_change_net(sock->sk, net); + + 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); + sk_release_kernel(sock->sk); + } + *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_destroy = cfg->encap_destroy; + + udp_tunnel_encap_enable(sock); +} +EXPORT_SYMBOL_GPL(setup_udp_tunnel_sock); + +int 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); + + udp_set_csum(nocheck, skb, src, dst, skb->len); + + return 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); + sk_release_kernel(sock->sk); +} +EXPORT_SYMBOL_GPL(udp_tunnel_sock_release); + +MODULE_LICENSE("GPL"); |