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authorDavid S. Miller <davem@davemloft.net>2020-08-31 12:26:39 -0700
committerDavid S. Miller <davem@davemloft.net>2020-08-31 12:26:39 -0700
commitbd10d459056fa396273739ca38bdfee4e46680ae (patch)
treefb7225f412637b8527aa0e2a9574f8d673c974b4
parent353ff8ccadbeb42937c7a181e3851333ef46a0ee (diff)
parenta7c978c6c958a6b3051f17897c5f57abf71e2342 (diff)
Merge branch 'Add-ip6_fragment-in-ipv6_stub'
wenxu says: ==================== Add ip6_fragment in ipv6_stub Add ip6_fragment in ipv6_stub and use it in openvswitch This version add default function eafnosupport_ipv6_fragment ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/ipv6_stubs.h3
-rw-r--r--net/ipv6/addrconf_core.c8
-rw-r--r--net/ipv6/af_inet6.c1
-rw-r--r--net/openvswitch/actions.c7
4 files changed, 13 insertions, 6 deletions
diff --git a/include/net/ipv6_stubs.h b/include/net/ipv6_stubs.h
index d7a7f7c81e7b..8fce558b5fea 100644
--- a/include/net/ipv6_stubs.h
+++ b/include/net/ipv6_stubs.h
@@ -63,6 +63,9 @@ struct ipv6_stub {
int encap_type);
#endif
struct neigh_table *nd_tbl;
+
+ int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
+ int (*output)(struct net *, struct sock *, struct sk_buff *));
};
extern const struct ipv6_stub *ipv6_stub __read_mostly;
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index 9ebf3fe0d2b1..c70c192bc91b 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -191,6 +191,13 @@ static int eafnosupport_ip6_del_rt(struct net *net, struct fib6_info *rt,
return -EAFNOSUPPORT;
}
+static int eafnosupport_ipv6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
+ int (*output)(struct net *, struct sock *, struct sk_buff *))
+{
+ kfree_skb(skb);
+ return -EAFNOSUPPORT;
+}
+
const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
.ipv6_dst_lookup_flow = eafnosupport_ipv6_dst_lookup_flow,
.ipv6_route_input = eafnosupport_ipv6_route_input,
@@ -201,6 +208,7 @@ const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
.ip6_mtu_from_fib6 = eafnosupport_ip6_mtu_from_fib6,
.fib6_nh_init = eafnosupport_fib6_nh_init,
.ip6_del_rt = eafnosupport_ip6_del_rt,
+ .ipv6_fragment = eafnosupport_ipv6_fragment,
};
EXPORT_SYMBOL_GPL(ipv6_stub);
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index d9a14935f402..e648fbebb167 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -1027,6 +1027,7 @@ static const struct ipv6_stub ipv6_stub_impl = {
.xfrm6_rcv_encap = xfrm6_rcv_encap,
#endif
.nd_tbl = &nd_tbl,
+ .ipv6_fragment = ip6_fragment,
};
static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = {
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 2611657f40ca..fd340893a27c 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -9,7 +9,6 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/openvswitch.h>
-#include <linux/netfilter_ipv6.h>
#include <linux/sctp.h>
#include <linux/tcp.h>
#include <linux/udp.h>
@@ -848,13 +847,9 @@ static void ovs_fragment(struct net *net, struct vport *vport,
ip_do_fragment(net, skb->sk, skb, ovs_vport_output);
refdst_drop(orig_dst);
} else if (key->eth.type == htons(ETH_P_IPV6)) {
- const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
unsigned long orig_dst;
struct rt6_info ovs_rt;
- if (!v6ops)
- goto err;
-
prepare_frag(vport, skb, orig_network_offset,
ovs_key_mac_proto(key));
memset(&ovs_rt, 0, sizeof(ovs_rt));
@@ -866,7 +861,7 @@ static void ovs_fragment(struct net *net, struct vport *vport,
skb_dst_set_noref(skb, &ovs_rt.dst);
IP6CB(skb)->frag_max_size = mru;
- v6ops->fragment(net, skb->sk, skb, ovs_vport_output);
+ ipv6_stub->ipv6_fragment(net, skb->sk, skb, ovs_vport_output);
refdst_drop(orig_dst);
} else {
WARN_ONCE(1, "Failed fragment ->%s: eth=%04x, MRU=%d, MTU=%d.",