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Message-Id: <1442913260-3925-27-git-send-email-pablo@netfilter.org>
Date: Tue, 22 Sep 2015 11:14:16 +0200
From: Pablo Neira Ayuso <pablo@...filter.org>
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 26/30] netfilter: nf_conntrack: Add a struct net parameter to l4_pkt_to_tuple
From: "Eric W. Biederman" <ebiederm@...ssion.com>
As gre does not have the srckey in the packet gre_pkt_to_tuple
needs to perform a lookup in it's per network namespace tables.
Pass in the proper network namespace to all pkt_to_tuple
implementations to ensure gre (and any similar protocols) can get this
right.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
include/net/netfilter/nf_conntrack.h | 3 ++-
include/net/netfilter/nf_conntrack_core.h | 1 +
include/net/netfilter/nf_conntrack_l4proto.h | 2 +-
net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 4 ++--
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 3 ++-
net/netfilter/nf_conntrack_core.c | 10 ++++++----
net/netfilter/nf_conntrack_proto_dccp.c | 2 +-
net/netfilter/nf_conntrack_proto_generic.c | 2 +-
net/netfilter/nf_conntrack_proto_gre.c | 3 +--
net/netfilter/nf_conntrack_proto_sctp.c | 2 +-
net/netfilter/nf_conntrack_proto_tcp.c | 2 +-
net/netfilter/nf_conntrack_proto_udp.c | 1 +
net/netfilter/nf_conntrack_proto_udplite.c | 1 +
net/netfilter/xt_connlimit.c | 2 +-
net/openvswitch/conntrack.c | 2 +-
net/sched/act_connmark.c | 2 +-
16 files changed, 24 insertions(+), 18 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index e8ad468..d642f68 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -191,7 +191,8 @@ int nf_conntrack_hash_check_insert(struct nf_conn *ct);
bool nf_ct_delete(struct nf_conn *ct, u32 pid, int report);
bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
- u_int16_t l3num, struct nf_conntrack_tuple *tuple);
+ u_int16_t l3num, struct net *net,
+ struct nf_conntrack_tuple *tuple);
bool nf_ct_invert_tuplepr(struct nf_conntrack_tuple *inverse,
const struct nf_conntrack_tuple *orig);
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index c03f9c4..788ef58 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -41,6 +41,7 @@ void nf_conntrack_cleanup_end(void);
bool nf_ct_get_tuple(const struct sk_buff *skb, unsigned int nhoff,
unsigned int dataoff, u_int16_t l3num, u_int8_t protonum,
+ struct net *net,
struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l3proto *l3proto,
const struct nf_conntrack_l4proto *l4proto);
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 1f70613..956d8a6 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -26,7 +26,7 @@ struct nf_conntrack_l4proto {
/* Try to fill in the third arg: dataoff is offset past network protocol
hdr. Return true if possible. */
bool (*pkt_to_tuple)(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple);
+ struct net *net, struct nf_conntrack_tuple *tuple);
/* Invert the per-proto part of the tuple: ie. turn xmit into reply.
* Some packets can't be inverted: return 0 in that case.
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index cdde3ec..c567e1b 100644
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -30,7 +30,7 @@ static inline struct nf_icmp_net *icmp_pernet(struct net *net)
}
static bool icmp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
const struct icmphdr *hp;
struct icmphdr _hdr;
@@ -144,7 +144,7 @@ icmp_error_message(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb,
if (!nf_ct_get_tuplepr(skb,
skb_network_offset(skb) + ip_hdrlen(skb)
+ sizeof(struct icmphdr),
- PF_INET, &origtuple)) {
+ PF_INET, net, &origtuple)) {
pr_debug("icmp_error_message: failed to get tuple\n");
return -NF_ACCEPT;
}
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 0e6fae1..d3b7974 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -36,6 +36,7 @@ static inline struct nf_icmp_net *icmpv6_pernet(struct net *net)
static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
+ struct net *net,
struct nf_conntrack_tuple *tuple)
{
const struct icmp6hdr *hp;
@@ -159,7 +160,7 @@ icmpv6_error_message(struct net *net, struct nf_conn *tmpl,
skb_network_offset(skb)
+ sizeof(struct ipv6hdr)
+ sizeof(struct icmp6hdr),
- PF_INET6, &origtuple)) {
+ PF_INET6, net, &origtuple)) {
pr_debug("icmpv6_error: Can't get tuple\n");
return -NF_ACCEPT;
}
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index c09d6c7..09d1d19 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -168,6 +168,7 @@ nf_ct_get_tuple(const struct sk_buff *skb,
unsigned int dataoff,
u_int16_t l3num,
u_int8_t protonum,
+ struct net *net,
struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l3proto *l3proto,
const struct nf_conntrack_l4proto *l4proto)
@@ -181,12 +182,13 @@ nf_ct_get_tuple(const struct sk_buff *skb,
tuple->dst.protonum = protonum;
tuple->dst.dir = IP_CT_DIR_ORIGINAL;
- return l4proto->pkt_to_tuple(skb, dataoff, tuple);
+ return l4proto->pkt_to_tuple(skb, dataoff, net, tuple);
}
EXPORT_SYMBOL_GPL(nf_ct_get_tuple);
bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
- u_int16_t l3num, struct nf_conntrack_tuple *tuple)
+ u_int16_t l3num,
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
struct nf_conntrack_l3proto *l3proto;
struct nf_conntrack_l4proto *l4proto;
@@ -205,7 +207,7 @@ bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
l4proto = __nf_ct_l4proto_find(l3num, protonum);
- ret = nf_ct_get_tuple(skb, nhoff, protoff, l3num, protonum, tuple,
+ ret = nf_ct_get_tuple(skb, nhoff, protoff, l3num, protonum, net, tuple,
l3proto, l4proto);
rcu_read_unlock();
@@ -1029,7 +1031,7 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl,
u32 hash;
if (!nf_ct_get_tuple(skb, skb_network_offset(skb),
- dataoff, l3num, protonum, &tuple, l3proto,
+ dataoff, l3num, protonum, net, &tuple, l3proto,
l4proto)) {
pr_debug("resolve_normal_ct: Can't get tuple\n");
return NULL;
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index 6dd995c..fce1b1c 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -398,7 +398,7 @@ static inline struct dccp_net *dccp_pernet(struct net *net)
}
static bool dccp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
struct dccp_hdr _hdr, *dh;
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index 2281be4..86dc752 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -45,7 +45,7 @@ static inline struct nf_generic_net *generic_pernet(struct net *net)
static bool generic_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
tuple->src.u.all = 0;
tuple->dst.u.all = 0;
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 7648674..a96451a 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -190,9 +190,8 @@ static bool gre_invert_tuple(struct nf_conntrack_tuple *tuple,
/* gre hdr info to tuple */
static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
- struct net *net = dev_net(skb->dev ? skb->dev : skb_dst(skb)->dev);
const struct gre_hdr_pptp *pgrehdr;
struct gre_hdr_pptp _pgrehdr;
__be16 srckey;
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index 6719773..9578a7c 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -156,7 +156,7 @@ static inline struct sctp_net *sctp_pernet(struct net *net)
}
static bool sctp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
const struct sctphdr *hp;
struct sctphdr _hdr;
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 70383de..278f3b9 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -277,7 +277,7 @@ static inline struct nf_tcp_net *tcp_pernet(struct net *net)
}
static bool tcp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
const struct tcphdr *hp;
struct tcphdr _hdr;
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 6957281..478f92f 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -38,6 +38,7 @@ static inline struct nf_udp_net *udp_pernet(struct net *net)
static bool udp_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
+ struct net *net,
struct nf_conntrack_tuple *tuple)
{
const struct udphdr *hp;
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index c5903d1..1ac8ee1 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -48,6 +48,7 @@ static inline struct udplite_net *udplite_pernet(struct net *net)
static bool udplite_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
+ struct net *net,
struct nf_conntrack_tuple *tuple)
{
const struct udphdr *hp;
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 213db25..99bbc82 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -332,7 +332,7 @@ connlimit_mt(const struct sk_buff *skb, struct xt_action_param *par)
tuple_ptr = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
zone = nf_ct_zone(ct);
} else if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb),
- par->family, &tuple)) {
+ par->family, net, &tuple)) {
goto hotdrop;
}
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index e8e524a..aaf5cbd 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -345,7 +345,7 @@ ovs_ct_expect_find(struct net *net, const struct nf_conntrack_zone *zone,
{
struct nf_conntrack_tuple tuple;
- if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb), proto, &tuple))
+ if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb), proto, net, &tuple))
return NULL;
return __nf_ct_expect_find(net, zone, &tuple);
}
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index 413ac39..bb41699 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -68,7 +68,7 @@ static int tcf_connmark(struct sk_buff *skb, const struct tc_action *a,
}
if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb),
- proto, &tuple))
+ proto, ca->net, &tuple))
goto out;
zone.id = ca->zone;
--
1.7.10.4
--
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