Commit | Line | Data |
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8024e028 TH |
1 | #include <linux/module.h> |
2 | #include <linux/errno.h> | |
3 | #include <linux/socket.h> | |
4 | #include <linux/udp.h> | |
5 | #include <linux/types.h> | |
6 | #include <linux/kernel.h> | |
7 | #include <net/udp.h> | |
8 | #include <net/udp_tunnel.h> | |
9 | #include <net/net_namespace.h> | |
10 | ||
fd384412 AZ |
11 | int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg, |
12 | struct socket **sockp) | |
8024e028 TH |
13 | { |
14 | int err = -EINVAL; | |
15 | struct socket *sock = NULL; | |
fd384412 | 16 | struct sockaddr_in udp_addr; |
8024e028 | 17 | |
fd384412 AZ |
18 | err = sock_create_kern(AF_INET, SOCK_DGRAM, 0, &sock); |
19 | if (err < 0) | |
20 | goto error; | |
8024e028 | 21 | |
fd384412 | 22 | sk_change_net(sock->sk, net); |
8024e028 | 23 | |
fd384412 AZ |
24 | udp_addr.sin_family = AF_INET; |
25 | udp_addr.sin_addr = cfg->local_ip; | |
26 | udp_addr.sin_port = cfg->local_udp_port; | |
27 | err = kernel_bind(sock, (struct sockaddr *)&udp_addr, | |
28 | sizeof(udp_addr)); | |
29 | if (err < 0) | |
30 | goto error; | |
8024e028 | 31 | |
fd384412 | 32 | if (cfg->peer_udp_port) { |
8024e028 | 33 | udp_addr.sin_family = AF_INET; |
fd384412 AZ |
34 | udp_addr.sin_addr = cfg->peer_ip; |
35 | udp_addr.sin_port = cfg->peer_udp_port; | |
36 | err = kernel_connect(sock, (struct sockaddr *)&udp_addr, | |
37 | sizeof(udp_addr), 0); | |
8024e028 TH |
38 | if (err < 0) |
39 | goto error; | |
8024e028 TH |
40 | } |
41 | ||
fd384412 | 42 | sock->sk->sk_no_check_tx = !cfg->use_udp_checksums; |
8024e028 TH |
43 | |
44 | *sockp = sock; | |
8024e028 TH |
45 | return 0; |
46 | ||
47 | error: | |
48 | if (sock) { | |
49 | kernel_sock_shutdown(sock, SHUT_RDWR); | |
50 | sk_release_kernel(sock->sk); | |
51 | } | |
52 | *sockp = NULL; | |
53 | return err; | |
54 | } | |
fd384412 | 55 | EXPORT_SYMBOL(udp_sock_create4); |
8024e028 TH |
56 | |
57 | MODULE_LICENSE("GPL"); |