Release 4.10 net/netfilter/nf_nat_proto_udplite.c
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
* (C) 2008 Patrick McHardy <kaber@trash.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/udp.h>
#include <linux/netfilter.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_l3proto.h>
#include <net/netfilter/nf_nat_l4proto.h>
static u16 udplite_port_rover;
static void
udplite_unique_tuple(const struct nf_nat_l3proto *l3proto,
struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
nf_nat_l4proto_unique_tuple(l3proto, tuple, range, maniptype, ct,
&udplite_port_rover);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 47 | 95.92% | 2 | 66.67% |
| changli gao | changli gao | 2 | 4.08% | 1 | 33.33% |
| Total | 49 | 100.00% | 3 | 100.00% |
static bool
udplite_manip_pkt(struct sk_buff *skb,
const struct nf_nat_l3proto *l3proto,
unsigned int iphdroff, unsigned int hdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
struct udphdr *hdr;
__be16 *portptr, newport;
if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
return false;
hdr = (struct udphdr *)(skb->data + hdroff);
if (maniptype == NF_NAT_MANIP_SRC) {
/* Get rid of source port */
newport = tuple->src.u.udp.port;
portptr = &hdr->source;
} else {
/* Get rid of dst port */
newport = tuple->dst.u.udp.port;
portptr = &hdr->dest;
}
l3proto->csum_update(skb, iphdroff, &hdr->check, tuple, maniptype);
inet_proto_csum_replace2(&hdr->check, skb, *portptr, newport, false);
if (!hdr->check)
hdr->check = CSUM_MANGLED_0;
*portptr = newport;
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 183 | 97.86% | 3 | 60.00% |
| jan engelhardt | jan engelhardt | 3 | 1.60% | 1 | 20.00% |
| tom herbert | tom herbert | 1 | 0.53% | 1 | 20.00% |
| Total | 187 | 100.00% | 5 | 100.00% |
const struct nf_nat_l4proto nf_nat_l4proto_udplite = {
.l4proto = IPPROTO_UDPLITE,
.manip_pkt = udplite_manip_pkt,
.in_range = nf_nat_l4proto_in_range,
.unique_tuple = udplite_unique_tuple,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.nlattr_to_range = nf_nat_l4proto_nlattr_to_range,
#endif
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 293 | 97.67% | 3 | 42.86% |
| jan engelhardt | jan engelhardt | 3 | 1.00% | 1 | 14.29% |
| changli gao | changli gao | 2 | 0.67% | 1 | 14.29% |
| tom herbert | tom herbert | 1 | 0.33% | 1 | 14.29% |
| duan jiong | duan jiong | 1 | 0.33% | 1 | 14.29% |
| Total | 300 | 100.00% | 7 | 100.00% |
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