Release 4.11 net/netfilter/nf_conntrack_proto_generic.c
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
*
* 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/jiffies.h>
#include <linux/timer.h>
#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ;
static bool nf_generic_should_process(u8 proto)
{
switch (proto) {
#ifdef CONFIG_NF_CT_PROTO_SCTP_MODULE
case IPPROTO_SCTP:
return false;
#endif
#ifdef CONFIG_NF_CT_PROTO_DCCP_MODULE
case IPPROTO_DCCP:
return false;
#endif
#ifdef CONFIG_NF_CT_PROTO_GRE_MODULE
case IPPROTO_GRE:
return false;
#endif
#ifdef CONFIG_NF_CT_PROTO_UDPLITE_MODULE
case IPPROTO_UDPLITE:
return false;
#endif
default:
return true;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 63 | 100.00% | 1 | 100.00% |
| Total | 63 | 100.00% | 1 | 100.00% |
static inline struct nf_generic_net *generic_pernet(struct net *net)
{
return &net->ct.nf_ct_proto.generic;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Gao Feng | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
static bool generic_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
struct net *net, struct nf_conntrack_tuple *tuple)
{
tuple->src.u.all = 0;
tuple->dst.u.all = 0;
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yasuyuki Kozakai | 42 | 85.71% | 1 | 33.33% |
| Eric W. Biedermann | 5 | 10.20% | 1 | 33.33% |
| Jan Engelhardt | 2 | 4.08% | 1 | 33.33% |
| Total | 49 | 100.00% | 3 | 100.00% |
static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_tuple *orig)
{
tuple->src.u.all = 0;
tuple->dst.u.all = 0;
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yasuyuki Kozakai | 38 | 95.00% | 1 | 50.00% |
| Jan Engelhardt | 2 | 5.00% | 1 | 50.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
/* Print out the per-protocol part of the tuple. */
static void generic_print_tuple(struct seq_file *s,
const struct nf_conntrack_tuple *tuple)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yasuyuki Kozakai | 14 | 87.50% | 1 | 50.00% |
| Joe Perches | 2 | 12.50% | 1 | 50.00% |
| Total | 16 | 100.00% | 2 | 100.00% |
static unsigned int *generic_get_timeouts(struct net *net)
{
return &(generic_pernet(net)->timeout);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 16 | 66.67% | 1 | 50.00% |
| Gao Feng | 8 | 33.33% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
/* Returns verdict for packet, or -1 for invalid. */
static int generic_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
u_int8_t pf,
unsigned int hooknum,
unsigned int *timeout)
{
nf_ct_refresh_acct(ct, ctinfo, skb, *timeout);
return NF_ACCEPT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yasuyuki Kozakai | 41 | 78.85% | 1 | 25.00% |
| Pablo Neira Ayuso | 8 | 15.38% | 1 | 25.00% |
| Patrick McHardy | 2 | 3.85% | 1 | 25.00% |
| Jan Engelhardt | 1 | 1.92% | 1 | 25.00% |
| Total | 52 | 100.00% | 4 | 100.00% |
/* Called when a new connection for this protocol found. */
static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff, unsigned int *timeouts)
{
bool ret;
ret = nf_generic_should_process(nf_ct_protonum(ct));
if (!ret)
pr_warn_once("conntrack: generic helper won't handle protocol %d. Please consider loading the specific helper module.\n",
nf_ct_protonum(ct));
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marcelo Ricardo Leitner | 23 | 40.35% | 1 | 16.67% |
| Yasuyuki Kozakai | 19 | 33.33% | 1 | 16.67% |
| Florian Westphal | 7 | 12.28% | 1 | 16.67% |
| Pablo Neira Ayuso | 6 | 10.53% | 1 | 16.67% |
| Patrick McHardy | 1 | 1.75% | 1 | 16.67% |
| Jan Engelhardt | 1 | 1.75% | 1 | 16.67% |
| Total | 57 | 100.00% | 6 | 100.00% |
#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_cttimeout.h>
static int generic_timeout_nlattr_to_obj(struct nlattr *tb[],
struct net *net, void *data)
{
unsigned int *timeout = data;
struct nf_generic_net *gn = generic_pernet(net);
if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT])
*timeout =
ntohl(nla_get_be32(tb[CTA_TIMEOUT_GENERIC_TIMEOUT])) * HZ;
else {
/* Set default generic timeout. */
*timeout = gn->timeout;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 57 | 76.00% | 1 | 50.00% |
| Gao Feng | 18 | 24.00% | 1 | 50.00% |
| Total | 75 | 100.00% | 2 | 100.00% |
static int
generic_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
{
const unsigned int *timeout = data;
if (nla_put_be32(skb, CTA_TIMEOUT_GENERIC_TIMEOUT, htonl(*timeout / HZ)))
goto nla_put_failure;
return 0;
nla_put_failure:
return -ENOSPC;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 46 | 86.79% | 1 | 50.00% |
| David S. Miller | 7 | 13.21% | 1 | 50.00% |
| Total | 53 | 100.00% | 2 | 100.00% |
static const struct nla_policy
generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = {
[CTA_TIMEOUT_GENERIC_TIMEOUT] = { .type = NLA_U32 },
};
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table generic_sysctl_table[] = {
{
.procname = "nf_conntrack_generic_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int generic_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_generic_net *gn)
{
#ifdef CONFIG_SYSCTL
pn->ctl_table = kmemdup(generic_sysctl_table,
sizeof(generic_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &gn->timeout;
#endif
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Gao Feng | 65 | 100.00% | 3 | 100.00% |
| Total | 65 | 100.00% | 3 | 100.00% |
static int generic_init_net(struct net *net, u_int16_t proto)
{
struct nf_generic_net *gn = generic_pernet(net);
struct nf_proto_net *pn = &gn->pn;
gn->timeout = nf_ct_generic_timeout;
return generic_kmemdup_sysctl_table(pn, gn);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Gao Feng | 48 | 100.00% | 1 | 100.00% |
| Total | 48 | 100.00% | 1 | 100.00% |
static struct nf_proto_net *generic_get_net_proto(struct net *net)
{
return &net->ct.nf_ct_proto.generic.pn;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly =
{
.l3proto = PF_UNSPEC,
.l4proto = 255,
.name = "unknown",
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
.print_tuple = generic_print_tuple,
.packet = generic_packet,
.get_timeouts = generic_get_timeouts,
.new = generic_new,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
.ctnl_timeout = {
.nlattr_to_obj = generic_timeout_nlattr_to_obj,
.obj_to_nlattr = generic_timeout_obj_to_nlattr,
.nlattr_max = CTA_TIMEOUT_GENERIC_MAX,
.obj_size = sizeof(unsigned int),
.nla_policy = generic_timeout_nla_policy,
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
.init_net = generic_init_net,
.get_net_proto = generic_get_net_proto,
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 252 | 31.27% | 3 | 12.00% |
| Yasuyuki Kozakai | 216 | 26.80% | 1 | 4.00% |
| Gao Feng | 168 | 20.84% | 4 | 16.00% |
| Florian Westphal | 70 | 8.68% | 1 | 4.00% |
| Patrick McHardy | 49 | 6.08% | 5 | 20.00% |
| Marcelo Ricardo Leitner | 23 | 2.85% | 1 | 4.00% |
| David S. Miller | 7 | 0.87% | 1 | 4.00% |
| Eric W. Biedermann | 6 | 0.74% | 2 | 8.00% |
| Jan Engelhardt | 6 | 0.74% | 2 | 8.00% |
| Martin Josefsson | 4 | 0.50% | 1 | 4.00% |
| Joe Perches | 2 | 0.25% | 1 | 4.00% |
| Christoph Paasch | 1 | 0.12% | 1 | 4.00% |
| Brian Haley | 1 | 0.12% | 1 | 4.00% |
| Tim Schmielau | 1 | 0.12% | 1 | 4.00% |
| Total | 806 | 100.00% | 25 | 100.00% |
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