* [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
@ 2019-05-20 18:57 Mike Manning
2019-05-20 22:16 ` David Ahern
2019-05-21 20:13 ` David Miller
0 siblings, 2 replies; 3+ messages in thread
From: Mike Manning @ 2019-05-20 18:57 UTC (permalink / raw)
To: netdev, dsahern
IPv6 does not consider if the socket is bound to a device when binding
to an address. The result is that a socket can be bound to eth0 and
then bound to the address of eth1. If the device is a VRF, the result
is that a socket can only be bound to an address in the default VRF.
Resolve by considering the device if sk_bound_dev_if is set.
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
---
net/ipv6/raw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 84dbe21b71e5..96a3559f2a09 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -287,7 +287,9 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
/* Binding to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
goto out_unlock;
+ }
+ if (sk->sk_bound_dev_if) {
err = -ENODEV;
dev = dev_get_by_index_rcu(sock_net(sk),
sk->sk_bound_dev_if);
--
2.11.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
2019-05-20 18:57 [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address Mike Manning
@ 2019-05-20 22:16 ` David Ahern
2019-05-21 20:13 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: David Ahern @ 2019-05-20 22:16 UTC (permalink / raw)
To: Mike Manning, netdev
On 5/20/19 12:57 PM, Mike Manning wrote:
> IPv6 does not consider if the socket is bound to a device when binding
> to an address. The result is that a socket can be bound to eth0 and
> then bound to the address of eth1. If the device is a VRF, the result
> is that a socket can only be bound to an address in the default VRF.
>
> Resolve by considering the device if sk_bound_dev_if is set.
>
> Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
> ---
> net/ipv6/raw.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
> index 84dbe21b71e5..96a3559f2a09 100644
> --- a/net/ipv6/raw.c
> +++ b/net/ipv6/raw.c
> @@ -287,7 +287,9 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
> /* Binding to link-local address requires an interface */
> if (!sk->sk_bound_dev_if)
> goto out_unlock;
> + }
>
> + if (sk->sk_bound_dev_if) {
> err = -ENODEV;
> dev = dev_get_by_index_rcu(sock_net(sk),
> sk->sk_bound_dev_if);
>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
2019-05-20 18:57 [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address Mike Manning
2019-05-20 22:16 ` David Ahern
@ 2019-05-21 20:13 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: David Miller @ 2019-05-21 20:13 UTC (permalink / raw)
To: mmanning; +Cc: netdev, dsahern
From: Mike Manning <mmanning@vyatta.att-mail.com>
Date: Mon, 20 May 2019 19:57:17 +0100
> IPv6 does not consider if the socket is bound to a device when binding
> to an address. The result is that a socket can be bound to eth0 and
> then bound to the address of eth1. If the device is a VRF, the result
> is that a socket can only be bound to an address in the default VRF.
>
> Resolve by considering the device if sk_bound_dev_if is set.
>
> Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Applied.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-05-21 20:13 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2019-05-20 18:57 [PATCH net] ipv6: Consider sk_bound_dev_if when binding a raw socket to an address Mike Manning
2019-05-20 22:16 ` David Ahern
2019-05-21 20:13 ` David Miller
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