bridge: Pass net into br_validate_ipv4 and br_validate_ipv6
The network namespace is easiliy available in state->net so use it. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Родитель
5f5d74d723
Коммит
c1444c6357
|
@ -45,12 +45,12 @@ struct net_device *setup_pre_routing(struct sk_buff *skb);
|
|||
void br_netfilter_enable(void);
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
int br_validate_ipv6(struct sk_buff *skb);
|
||||
int br_validate_ipv6(struct net *net, struct sk_buff *skb);
|
||||
unsigned int br_nf_pre_routing_ipv6(void *priv,
|
||||
struct sk_buff *skb,
|
||||
const struct nf_hook_state *state);
|
||||
#else
|
||||
static inline int br_validate_ipv6(struct sk_buff *skb)
|
||||
static inline int br_validate_ipv6(struct net *net, struct sk_buff *skb)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
|
|
@ -189,10 +189,9 @@ static inline void nf_bridge_pull_encap_header_rcsum(struct sk_buff *skb)
|
|||
* expected format
|
||||
*/
|
||||
|
||||
static int br_validate_ipv4(struct sk_buff *skb)
|
||||
static int br_validate_ipv4(struct net *net, struct sk_buff *skb)
|
||||
{
|
||||
const struct iphdr *iph;
|
||||
struct net_device *dev = skb->dev;
|
||||
u32 len;
|
||||
|
||||
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
|
||||
|
@ -213,13 +212,13 @@ static int br_validate_ipv4(struct sk_buff *skb)
|
|||
|
||||
len = ntohs(iph->tot_len);
|
||||
if (skb->len < len) {
|
||||
IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INTRUNCATEDPKTS);
|
||||
IP_INC_STATS_BH(net, IPSTATS_MIB_INTRUNCATEDPKTS);
|
||||
goto drop;
|
||||
} else if (len < (iph->ihl*4))
|
||||
goto inhdr_error;
|
||||
|
||||
if (pskb_trim_rcsum(skb, len)) {
|
||||
IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INDISCARDS);
|
||||
IP_INC_STATS_BH(net, IPSTATS_MIB_INDISCARDS);
|
||||
goto drop;
|
||||
}
|
||||
|
||||
|
@ -232,7 +231,7 @@ static int br_validate_ipv4(struct sk_buff *skb)
|
|||
return 0;
|
||||
|
||||
inhdr_error:
|
||||
IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INHDRERRORS);
|
||||
IP_INC_STATS_BH(net, IPSTATS_MIB_INHDRERRORS);
|
||||
drop:
|
||||
return -1;
|
||||
}
|
||||
|
@ -497,7 +496,7 @@ static unsigned int br_nf_pre_routing(void *priv,
|
|||
|
||||
nf_bridge_pull_encap_header_rcsum(skb);
|
||||
|
||||
if (br_validate_ipv4(skb))
|
||||
if (br_validate_ipv4(state->net, skb))
|
||||
return NF_DROP;
|
||||
|
||||
nf_bridge_put(skb->nf_bridge);
|
||||
|
@ -609,13 +608,13 @@ static unsigned int br_nf_forward_ip(void *priv,
|
|||
}
|
||||
|
||||
if (pf == NFPROTO_IPV4) {
|
||||
if (br_validate_ipv4(skb))
|
||||
if (br_validate_ipv4(state->net, skb))
|
||||
return NF_DROP;
|
||||
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
|
||||
}
|
||||
|
||||
if (pf == NFPROTO_IPV6) {
|
||||
if (br_validate_ipv6(skb))
|
||||
if (br_validate_ipv6(state->net, skb))
|
||||
return NF_DROP;
|
||||
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
|
||||
}
|
||||
|
@ -747,7 +746,7 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
|
|||
if (skb->protocol == htons(ETH_P_IP)) {
|
||||
struct brnf_frag_data *data;
|
||||
|
||||
if (br_validate_ipv4(skb))
|
||||
if (br_validate_ipv4(net, skb))
|
||||
goto drop;
|
||||
|
||||
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
|
||||
|
@ -772,7 +771,7 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
|
|||
const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
|
||||
struct brnf_frag_data *data;
|
||||
|
||||
if (br_validate_ipv6(skb))
|
||||
if (br_validate_ipv6(net, skb))
|
||||
goto drop;
|
||||
|
||||
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
|
||||
|
|
|
@ -100,10 +100,9 @@ bad:
|
|||
return -1;
|
||||
}
|
||||
|
||||
int br_validate_ipv6(struct sk_buff *skb)
|
||||
int br_validate_ipv6(struct net *net, struct sk_buff *skb)
|
||||
{
|
||||
const struct ipv6hdr *hdr;
|
||||
struct net_device *dev = skb->dev;
|
||||
struct inet6_dev *idev = __in6_dev_get(skb->dev);
|
||||
u32 pkt_len;
|
||||
u8 ip6h_len = sizeof(struct ipv6hdr);
|
||||
|
@ -123,12 +122,12 @@ int br_validate_ipv6(struct sk_buff *skb)
|
|||
|
||||
if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) {
|
||||
if (pkt_len + ip6h_len > skb->len) {
|
||||
IP6_INC_STATS_BH(dev_net(dev), idev,
|
||||
IP6_INC_STATS_BH(net, idev,
|
||||
IPSTATS_MIB_INTRUNCATEDPKTS);
|
||||
goto drop;
|
||||
}
|
||||
if (pskb_trim_rcsum(skb, pkt_len + ip6h_len)) {
|
||||
IP6_INC_STATS_BH(dev_net(dev), idev,
|
||||
IP6_INC_STATS_BH(net, idev,
|
||||
IPSTATS_MIB_INDISCARDS);
|
||||
goto drop;
|
||||
}
|
||||
|
@ -143,7 +142,7 @@ int br_validate_ipv6(struct sk_buff *skb)
|
|||
return 0;
|
||||
|
||||
inhdr_error:
|
||||
IP6_INC_STATS_BH(dev_net(dev), idev, IPSTATS_MIB_INHDRERRORS);
|
||||
IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_INHDRERRORS);
|
||||
drop:
|
||||
return -1;
|
||||
}
|
||||
|
@ -224,7 +223,7 @@ unsigned int br_nf_pre_routing_ipv6(void *priv,
|
|||
{
|
||||
struct nf_bridge_info *nf_bridge;
|
||||
|
||||
if (br_validate_ipv6(skb))
|
||||
if (br_validate_ipv6(state->net, skb))
|
||||
return NF_DROP;
|
||||
|
||||
nf_bridge_put(skb->nf_bridge);
|
||||
|
|
Загрузка…
Ссылка в новой задаче