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netfilter: netns nf_conntrack: pass netns pointer to nf_conntrack_in()

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It's deducible from skb->dev or skb->dst->dev, but we know netns at
the moment of call, so pass it down and use for finding and creating
conntracks.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-10-08 11:35:04 +02:00 committed by Patrick McHardy
parent 63c9a26264
commit a702a65fc1
4 changed files with 28 additions and 18 deletions
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3
include/net/netfilter/nf_conntrack_core.h
View File

@ -20,7 +20,8 @@
/* This header is used to share core functionality between the
standalone connection tracking module, and the compatibility layer's use
of connection tracking. */
extern unsigned int nf_conntrack_in(u_int8_t pf,
extern unsigned int nf_conntrack_in(struct net *net,
u_int8_t pf,
unsigned int hooknum,
struct sk_buff *skb);

4
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
View File

@ -172,7 +172,7 @@ static unsigned int ipv4_conntrack_in(unsigned int hooknum,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return nf_conntrack_in(PF_INET, hooknum, skb);
return nf_conntrack_in(dev_net(in), PF_INET, hooknum, skb);
}
static unsigned int ipv4_conntrack_local(unsigned int hooknum,
@ -188,7 +188,7 @@ static unsigned int ipv4_conntrack_local(unsigned int hooknum,
printk("ipt_hook: happy cracking.\n");
return NF_ACCEPT;
}
return nf_conntrack_in(PF_INET, hooknum, skb);
return nf_conntrack_in(dev_net(out), PF_INET, hooknum, skb);
}
/* Connection tracking may drop packets, but never alters them, so

24
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
View File

@ -211,11 +211,10 @@ static unsigned int ipv6_defrag(unsigned int hooknum,
return NF_STOLEN;
}
static unsigned int ipv6_conntrack_in(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
static unsigned int __ipv6_conntrack_in(struct net *net,
unsigned int hooknum,
struct sk_buff *skb,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *reasm = skb->nfct_reasm;
@ -225,7 +224,7 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum,
if (!reasm->nfct) {
unsigned int ret;
ret = nf_conntrack_in(PF_INET6, hooknum, reasm);
ret = nf_conntrack_in(net, PF_INET6, hooknum, reasm);
if (ret != NF_ACCEPT)
return ret;
}
@ -235,7 +234,16 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum,
return NF_ACCEPT;
}
return nf_conntrack_in(PF_INET6, hooknum, skb);
return nf_conntrack_in(net, PF_INET6, hooknum, skb);
}
static unsigned int ipv6_conntrack_in(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return __ipv6_conntrack_in(dev_net(in), hooknum, skb, okfn);
}
static unsigned int ipv6_conntrack_local(unsigned int hooknum,
@ -250,7 +258,7 @@ static unsigned int ipv6_conntrack_local(unsigned int hooknum,
printk("ipv6_conntrack_local: packet too short\n");
return NF_ACCEPT;
}
return ipv6_conntrack_in(hooknum, skb, in, out, okfn);
return __ipv6_conntrack_in(dev_net(out), hooknum, skb, okfn);
}
static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {

15
net/netfilter/nf_conntrack_core.c
View File

@ -611,7 +611,8 @@ init_conntrack(struct net *net,
/* On success, returns conntrack ptr, sets skb->nfct and ctinfo */
static inline struct nf_conn *
resolve_normal_ct(struct sk_buff *skb,
resolve_normal_ct(struct net *net,
struct sk_buff *skb,
unsigned int dataoff,
u_int16_t l3num,
u_int8_t protonum,
@ -632,10 +633,9 @@ resolve_normal_ct(struct sk_buff *skb,
}
/* look for tuple match */
h = nf_conntrack_find_get(&init_net, &tuple);
h = nf_conntrack_find_get(net, &tuple);
if (!h) {
h = init_conntrack(&init_net, &tuple, l3proto, l4proto, skb,
dataoff);
h = init_conntrack(net, &tuple, l3proto, l4proto, skb, dataoff);
if (!h)
return NULL;
if (IS_ERR(h))
@ -669,7 +669,8 @@ resolve_normal_ct(struct sk_buff *skb,
}
unsigned int
nf_conntrack_in(u_int8_t pf, unsigned int hooknum, struct sk_buff *skb)
nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
struct sk_buff *skb)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
@ -709,8 +710,8 @@ nf_conntrack_in(u_int8_t pf, unsigned int hooknum, struct sk_buff *skb)
return -ret;
}
ct = resolve_normal_ct(skb, dataoff, pf, protonum, l3proto, l4proto,
&set_reply, &ctinfo);
ct = resolve_normal_ct(net, skb, dataoff, pf, protonum,
l3proto, l4proto, &set_reply, &ctinfo);
if (!ct) {
/* Not valid part of a connection */
NF_CT_STAT_INC_ATOMIC(invalid);