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net/ipv6: Make __inet6_bind static 

BPF core gets access to __inet6_bind via ipv6_bpf_stub_impl, so it is
not invoked directly outside of af_inet6.c. Make it static and move
inet6_bind after to avoid forward declaration.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-04-17 10:00:39 -07:00 committed by David S. Miller
parent 684009d4fd
commit 032234d823
2 changed files with 26 additions and 29 deletions
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2
include/net/ipv6.h
View File

@ -1044,8 +1044,6 @@ void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info);
void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu); void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
int inet6_release(struct socket *sock); int inet6_release(struct socket *sock);
int __inet6_bind(struct sock *sock, struct sockaddr *uaddr, int addr_len,
bool force_bind_address_no_port, bool with_lock);
int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len); int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
int inet6_getname(struct socket *sock, struct sockaddr *uaddr, int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
int peer); int peer);

53
net/ipv6/af_inet6.c
View File

@ -273,33 +273,8 @@ out_rcu_unlock:
goto out; goto out;
} }
static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
/* bind for INET6 API */ bool force_bind_address_no_port, bool with_lock)
int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
int err = 0;
/* If the socket has its own bind function then use it. */
if (sk->sk_prot->bind)
return sk->sk_prot->bind(sk, uaddr, addr_len);
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
/* BPF prog is run before any checks are done so that if the prog
* changes context in a wrong way it will be caught.
*/
err = BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr);
if (err)
return err;
return __inet6_bind(sk, uaddr, addr_len, false, true);
}
EXPORT_SYMBOL(inet6_bind);
int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
bool force_bind_address_no_port, bool with_lock)
{ {
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr;
struct inet_sock *inet = inet_sk(sk); struct inet_sock *inet = inet_sk(sk);
@ -444,6 +419,30 @@ out_unlock:
goto out; goto out;
} }
/* bind for INET6 API */
int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
int err = 0;
/* If the socket has its own bind function then use it. */
if (sk->sk_prot->bind)
return sk->sk_prot->bind(sk, uaddr, addr_len);
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
/* BPF prog is run before any checks are done so that if the prog
* changes context in a wrong way it will be caught.
*/
err = BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr);
if (err)
return err;
return __inet6_bind(sk, uaddr, addr_len, false, true);
}
EXPORT_SYMBOL(inet6_bind);
int inet6_release(struct socket *sock) int inet6_release(struct socket *sock)
{ {
struct sock *sk = sock->sk; struct sock *sk = sock->sk;