From: Florian Westphal <fw@xxxxxxxxx>
rather than handling them via indirect call, use a direct one instead.
This leaves GRE as the last user of this indirect call facility.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
include/net/netfilter/nf_conntrack_l4proto.h | 10 ++++++++++
net/netfilter/nf_conntrack_core.c | 6 ++++++
net/netfilter/nf_conntrack_proto_icmp.c | 5 ++---
net/netfilter/nf_conntrack_proto_icmpv6.c | 9 ++++-----
4 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 6ca4355ae3dc..46d554806eb3 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -90,6 +90,16 @@ struct nf_conntrack_l4proto {
struct module *me;
};
+bool icmp_pkt_to_tuple(const struct sk_buff *skb,
+ unsigned int dataoff,
+ struct net *net,
+ struct nf_conntrack_tuple *tuple);
+
+bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
+ unsigned int dataoff,
+ struct net *net,
+ struct nf_conntrack_tuple *tuple);
+
int nf_conntrack_icmpv4_error(struct nf_conn *tmpl,
struct sk_buff *skb,
unsigned int dataoff,
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 5dfd95ae510d..b3840d36c3a6 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -274,6 +274,12 @@ nf_ct_get_tuple(const struct sk_buff *skb,
tuple->dst.protonum = protonum;
tuple->dst.dir = IP_CT_DIR_ORIGINAL;
+ switch (protonum) {
+ case IPPROTO_ICMPV6:
+ return icmpv6_pkt_to_tuple(skb, dataoff, net, tuple);
+ case IPPROTO_ICMP:
+ return icmp_pkt_to_tuple(skb, dataoff, net, tuple);
+ }
if (unlikely(l4proto->pkt_to_tuple))
return l4proto->pkt_to_tuple(skb, dataoff, net, tuple);
diff --git a/net/netfilter/nf_conntrack_proto_icmp.c b/net/netfilter/nf_conntrack_proto_icmp.c
index 381a7f3ea68a..805c1fe5b837 100644
--- a/net/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/netfilter/nf_conntrack_proto_icmp.c
@@ -25,8 +25,8 @@
static const unsigned int nf_ct_icmp_timeout = 30*HZ;
-static bool icmp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
- struct net *net, struct nf_conntrack_tuple *tuple)
+bool icmp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
+ struct net *net, struct nf_conntrack_tuple *tuple)
{
const struct icmphdr *hp;
struct icmphdr _hdr;
@@ -347,7 +347,6 @@ static struct nf_proto_net *icmp_get_net_proto(struct net *net)
const struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp =
{
.l4proto = IPPROTO_ICMP,
- .pkt_to_tuple = icmp_pkt_to_tuple,
.invert_tuple = icmp_invert_tuple,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = icmp_tuple_to_nlattr,
diff --git a/net/netfilter/nf_conntrack_proto_icmpv6.c b/net/netfilter/nf_conntrack_proto_icmpv6.c
index 93f27d0bcb75..20cd55e55e41 100644
--- a/net/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/netfilter/nf_conntrack_proto_icmpv6.c
@@ -30,10 +30,10 @@
static const unsigned int nf_ct_icmpv6_timeout = 30*HZ;
-static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
- unsigned int dataoff,
- struct net *net,
- struct nf_conntrack_tuple *tuple)
+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;
struct icmp6hdr _hdr;
@@ -358,7 +358,6 @@ static struct nf_proto_net *icmpv6_get_net_proto(struct net *net)
const struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 =
{
.l4proto = IPPROTO_ICMPV6,
- .pkt_to_tuple = icmpv6_pkt_to_tuple,
.invert_tuple = icmpv6_invert_tuple,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = icmpv6_tuple_to_nlattr,
--
2.11.0
