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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>
This commit is contained in:
commit
bd10d45905
4 changed files with 13 additions and 6 deletions
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@ -63,6 +63,9 @@ struct ipv6_stub {
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int encap_type);
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#endif
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struct neigh_table *nd_tbl;
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int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
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int (*output)(struct net *, struct sock *, struct sk_buff *));
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};
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extern const struct ipv6_stub *ipv6_stub __read_mostly;
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@ -191,6 +191,13 @@ static int eafnosupport_ip6_del_rt(struct net *net, struct fib6_info *rt,
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return -EAFNOSUPPORT;
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}
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static int eafnosupport_ipv6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
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int (*output)(struct net *, struct sock *, struct sk_buff *))
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{
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kfree_skb(skb);
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return -EAFNOSUPPORT;
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}
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const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
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.ipv6_dst_lookup_flow = eafnosupport_ipv6_dst_lookup_flow,
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.ipv6_route_input = eafnosupport_ipv6_route_input,
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@ -201,6 +208,7 @@ const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
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.ip6_mtu_from_fib6 = eafnosupport_ip6_mtu_from_fib6,
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.fib6_nh_init = eafnosupport_fib6_nh_init,
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.ip6_del_rt = eafnosupport_ip6_del_rt,
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.ipv6_fragment = eafnosupport_ipv6_fragment,
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};
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EXPORT_SYMBOL_GPL(ipv6_stub);
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@ -1027,6 +1027,7 @@ static const struct ipv6_stub ipv6_stub_impl = {
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.xfrm6_rcv_encap = xfrm6_rcv_encap,
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#endif
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.nd_tbl = &nd_tbl,
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.ipv6_fragment = ip6_fragment,
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};
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static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = {
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@ -9,7 +9,6 @@
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/openvswitch.h>
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#include <linux/netfilter_ipv6.h>
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#include <linux/sctp.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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@ -848,13 +847,9 @@ static void ovs_fragment(struct net *net, struct vport *vport,
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ip_do_fragment(net, skb->sk, skb, ovs_vport_output);
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refdst_drop(orig_dst);
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} else if (key->eth.type == htons(ETH_P_IPV6)) {
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const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
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unsigned long orig_dst;
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struct rt6_info ovs_rt;
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if (!v6ops)
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goto err;
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prepare_frag(vport, skb, orig_network_offset,
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ovs_key_mac_proto(key));
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memset(&ovs_rt, 0, sizeof(ovs_rt));
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@ -866,7 +861,7 @@ static void ovs_fragment(struct net *net, struct vport *vport,
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skb_dst_set_noref(skb, &ovs_rt.dst);
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IP6CB(skb)->frag_max_size = mru;
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v6ops->fragment(net, skb->sk, skb, ovs_vport_output);
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ipv6_stub->ipv6_fragment(net, skb->sk, skb, ovs_vport_output);
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refdst_drop(orig_dst);
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} else {
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WARN_ONCE(1, "Failed fragment ->%s: eth=%04x, MRU=%d, MTU=%d.",
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