Commit 65a2022e authored by David Ahern's avatar David Ahern Committed by Daniel Borkmann

net/ipv6: Add fib lookup stubs for use in bpf helper

Add stubs to retrieve a handle to an IPv6 FIB table, fib6_get_table,
a stub to do a lookup in a specific table, fib6_table_lookup, and
a stub for a full route lookup.

The stubs are needed for core bpf code to handle the case when the
IPv6 module is not builtin.
Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent d4bea421
...@@ -223,6 +223,20 @@ struct ipv6_stub { ...@@ -223,6 +223,20 @@ struct ipv6_stub {
const struct in6_addr *addr); const struct in6_addr *addr);
int (*ipv6_dst_lookup)(struct net *net, struct sock *sk, int (*ipv6_dst_lookup)(struct net *net, struct sock *sk,
struct dst_entry **dst, struct flowi6 *fl6); struct dst_entry **dst, struct flowi6 *fl6);
struct fib6_table *(*fib6_get_table)(struct net *net, u32 id);
struct fib6_info *(*fib6_lookup)(struct net *net, int oif,
struct flowi6 *fl6, int flags);
struct fib6_info *(*fib6_table_lookup)(struct net *net,
struct fib6_table *table,
int oif, struct flowi6 *fl6,
int flags);
struct fib6_info *(*fib6_multipath_select)(const struct net *net,
struct fib6_info *f6i,
struct flowi6 *fl6, int oif,
const struct sk_buff *skb,
int strict);
void (*udpv6_encap_enable)(void); void (*udpv6_encap_enable)(void);
void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr, void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr,
const struct in6_addr *solicited_addr, const struct in6_addr *solicited_addr,
......
...@@ -134,8 +134,39 @@ static int eafnosupport_ipv6_dst_lookup(struct net *net, struct sock *u1, ...@@ -134,8 +134,39 @@ static int eafnosupport_ipv6_dst_lookup(struct net *net, struct sock *u1,
return -EAFNOSUPPORT; return -EAFNOSUPPORT;
} }
static struct fib6_table *eafnosupport_fib6_get_table(struct net *net, u32 id)
{
return NULL;
}
static struct fib6_info *
eafnosupport_fib6_table_lookup(struct net *net, struct fib6_table *table,
int oif, struct flowi6 *fl6, int flags)
{
return NULL;
}
static struct fib6_info *
eafnosupport_fib6_lookup(struct net *net, int oif, struct flowi6 *fl6,
int flags)
{
return NULL;
}
static struct fib6_info *
eafnosupport_fib6_multipath_select(const struct net *net, struct fib6_info *f6i,
struct flowi6 *fl6, int oif,
const struct sk_buff *skb, int strict)
{
return f6i;
}
const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) { const struct ipv6_stub *ipv6_stub __read_mostly = &(struct ipv6_stub) {
.ipv6_dst_lookup = eafnosupport_ipv6_dst_lookup, .ipv6_dst_lookup = eafnosupport_ipv6_dst_lookup,
.fib6_get_table = eafnosupport_fib6_get_table,
.fib6_table_lookup = eafnosupport_fib6_table_lookup,
.fib6_lookup = eafnosupport_fib6_lookup,
.fib6_multipath_select = eafnosupport_fib6_multipath_select,
}; };
EXPORT_SYMBOL_GPL(ipv6_stub); EXPORT_SYMBOL_GPL(ipv6_stub);
......
...@@ -890,6 +890,10 @@ static const struct ipv6_stub ipv6_stub_impl = { ...@@ -890,6 +890,10 @@ static const struct ipv6_stub ipv6_stub_impl = {
.ipv6_sock_mc_join = ipv6_sock_mc_join, .ipv6_sock_mc_join = ipv6_sock_mc_join,
.ipv6_sock_mc_drop = ipv6_sock_mc_drop, .ipv6_sock_mc_drop = ipv6_sock_mc_drop,
.ipv6_dst_lookup = ip6_dst_lookup, .ipv6_dst_lookup = ip6_dst_lookup,
.fib6_get_table = fib6_get_table,
.fib6_table_lookup = fib6_table_lookup,
.fib6_lookup = fib6_lookup,
.fib6_multipath_select = fib6_multipath_select,
.udpv6_encap_enable = udpv6_encap_enable, .udpv6_encap_enable = udpv6_encap_enable,
.ndisc_send_na = ndisc_send_na, .ndisc_send_na = ndisc_send_na,
.nd_tbl = &nd_tbl, .nd_tbl = &nd_tbl,
......
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