| Pavel Emelyanov | 52b7c59 | 2011-12-09 06:23:51 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * udp_diag.c Module for monitoring UDP transport protocols sockets. |
| 3 | * |
| 4 | * Authors: Pavel Emelyanov, <xemul@parallels.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/inet_diag.h> |
| 15 | #include <linux/udp.h> |
| 16 | #include <net/udp.h> |
| 17 | #include <net/udplite.h> |
| 18 | #include <linux/inet_diag.h> |
| 19 | #include <linux/sock_diag.h> |
| 20 | |
| 21 | static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, |
| 22 | const struct nlmsghdr *nlh, struct inet_diag_req *req) |
| 23 | { |
| 24 | return 0; |
| 25 | } |
| 26 | |
| 27 | static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlink_callback *cb, |
| 28 | struct inet_diag_req *r, struct nlattr *bc) |
| 29 | { |
| 30 | } |
| 31 | |
| 32 | static void udp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| 33 | struct inet_diag_req *r, struct nlattr *bc) |
| 34 | { |
| 35 | udp_dump(&udp_table, skb, cb, r, bc); |
| 36 | } |
| 37 | |
| 38 | static int udp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh, |
| 39 | struct inet_diag_req *req) |
| 40 | { |
| 41 | return udp_dump_one(&udp_table, in_skb, nlh, req); |
| 42 | } |
| 43 | |
| 44 | static const struct inet_diag_handler udp_diag_handler = { |
| 45 | .dump = udp_diag_dump, |
| 46 | .dump_one = udp_diag_dump_one, |
| 47 | .idiag_type = IPPROTO_UDP, |
| 48 | }; |
| 49 | |
| 50 | static void udplite_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| 51 | struct inet_diag_req *r, struct nlattr *bc) |
| 52 | { |
| 53 | udp_dump(&udplite_table, skb, cb, r, bc); |
| 54 | } |
| 55 | |
| 56 | static int udplite_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh, |
| 57 | struct inet_diag_req *req) |
| 58 | { |
| 59 | return udp_dump_one(&udplite_table, in_skb, nlh, req); |
| 60 | } |
| 61 | |
| 62 | static const struct inet_diag_handler udplite_diag_handler = { |
| 63 | .dump = udplite_diag_dump, |
| 64 | .dump_one = udplite_diag_dump_one, |
| 65 | .idiag_type = IPPROTO_UDPLITE, |
| 66 | }; |
| 67 | |
| 68 | static int __init udp_diag_init(void) |
| 69 | { |
| 70 | int err; |
| 71 | |
| 72 | err = inet_diag_register(&udp_diag_handler); |
| 73 | if (err) |
| 74 | goto out; |
| 75 | err = inet_diag_register(&udplite_diag_handler); |
| 76 | if (err) |
| 77 | goto out_lite; |
| 78 | out: |
| 79 | return err; |
| 80 | out_lite: |
| 81 | inet_diag_unregister(&udp_diag_handler); |
| 82 | goto out; |
| 83 | } |
| 84 | |
| 85 | static void __exit udp_diag_exit(void) |
| 86 | { |
| 87 | inet_diag_unregister(&udplite_diag_handler); |
| 88 | inet_diag_unregister(&udp_diag_handler); |
| 89 | } |
| 90 | |
| 91 | module_init(udp_diag_init); |
| 92 | module_exit(udp_diag_exit); |
| 93 | MODULE_LICENSE("GPL"); |
| 94 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 17); |
| 95 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 136); |