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netfilter: netns-aware ipt_addrtype 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-11-04 14:21:48 +01:00 committed by Patrick McHardy
parent 5f7340eff8
commit d4ec52bae7
1 changed files with 9 additions and 7 deletions
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16
net/ipv4/netfilter/ipt_addrtype.c
View File

@ -23,24 +23,25 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_DESCRIPTION("Xtables: address type match for IPv4");
static inline bool match_type(const struct net_device *dev, __be32 addr,
u_int16_t mask)
static inline bool match_type(struct net *net, const struct net_device *dev,
__be32 addr, u_int16_t mask)
{
return !!(mask & (1 << inet_dev_addr_type(&init_net, dev, addr)));
return !!(mask & (1 << inet_dev_addr_type(net, dev, addr)));
}
static bool
addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info *info = par->matchinfo;
const struct iphdr *iph = ip_hdr(skb);
bool ret = true;
if (info->source)
ret &= match_type(NULL, iph->saddr, info->source) ^
ret &= match_type(net, NULL, iph->saddr, info->source) ^
info->invert_source;
if (info->dest)
ret &= match_type(NULL, iph->daddr, info->dest) ^
ret &= match_type(net, NULL, iph->daddr, info->dest) ^
info->invert_dest;
return ret;
@ -49,6 +50,7 @@ addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
static bool
addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info_v1 *info = par->matchinfo;
const struct iphdr *iph = ip_hdr(skb);
const struct net_device *dev = NULL;
@ -60,10 +62,10 @@ addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
dev = par->out;
if (info->source)
ret &= match_type(dev, iph->saddr, info->source) ^
ret &= match_type(net, dev, iph->saddr, info->source) ^
(info->flags & IPT_ADDRTYPE_INVERT_SOURCE);
if (ret && info->dest)
ret &= match_type(dev, iph->daddr, info->dest) ^
ret &= match_type(net, dev, iph->daddr, info->dest) ^
!!(info->flags & IPT_ADDRTYPE_INVERT_DEST);
return ret;
}