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ipv6_stub: add ipv6_route_input stub/proxy.

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Proxy ip6_route_input via ipv6_stub, for later use by lwt bpf ip encap
(see the next patch in the patchset).

Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Peter Oskolkov 2019-02-13 11:53:38 -08:00 committed by Alexei Starovoitov
parent ca78801a81
commit 9b0a6a9dba
3 changed files with 14 additions and 0 deletions
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1
include/net/addrconf.h
View File

@ -248,6 +248,7 @@ struct ipv6_stub {
const struct in6_addr *addr);
int (*ipv6_dst_lookup)(struct net *net, struct sock *sk,
struct dst_entry **dst, struct flowi6 *fl6);
int (*ipv6_route_input)(struct sk_buff *skb);
struct fib6_table *(*fib6_get_table)(struct net *net, u32 id);
struct fib6_info *(*fib6_lookup)(struct net *net, int oif,

6
net/ipv6/addrconf_core.c
View File

@ -134,6 +134,11 @@ static int eafnosupport_ipv6_dst_lookup(struct net *net, struct sock *u1,
return -EAFNOSUPPORT;
}
static int eafnosupport_ipv6_route_input(struct sk_buff *skb)
{
return -EAFNOSUPPORT;
}
static struct fib6_table *eafnosupport_fib6_get_table(struct net *net, u32 id)
{
return NULL;
@ -170,6 +175,7 @@ eafnosupport_ip6_mtu_from_fib6(struct fib6_info *f6i, struct in6_addr *daddr,
const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
.ipv6_dst_lookup = eafnosupport_ipv6_dst_lookup,
.ipv6_route_input = eafnosupport_ipv6_route_input,
.fib6_get_table = eafnosupport_fib6_get_table,
.fib6_table_lookup = eafnosupport_fib6_table_lookup,
.fib6_lookup = eafnosupport_fib6_lookup,

7
net/ipv6/af_inet6.c
View File

@ -900,10 +900,17 @@ static struct pernet_operations inet6_net_ops = {
.exit = inet6_net_exit,
};
static int ipv6_route_input(struct sk_buff *skb)
{
ip6_route_input(skb);
return skb_dst(skb)->error;
}
static const struct ipv6_stub ipv6_stub_impl = {
.ipv6_sock_mc_join = ipv6_sock_mc_join,
.ipv6_sock_mc_drop = ipv6_sock_mc_drop,
.ipv6_dst_lookup = ip6_dst_lookup,
.ipv6_route_input = ipv6_route_input,
.fib6_get_table = fib6_get_table,
.fib6_table_lookup = fib6_table_lookup,
.fib6_lookup = fib6_lookup,