From: David Decotigny Date: Mon, 21 Mar 2016 17:15:35 +0000 (-0700) Subject: netlink: add support for NIC driver ioctls X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=025c68186e07afaededa84143f1a22f273cd3f67;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git netlink: add support for NIC driver ioctls By returning -ENOIOCTLCMD, sock_do_ioctl() falls back to calling dev_ioctl(), which provides support for NIC driver ioctls, which includes ethtool support. This is similar to the way ioctls are handled in udp.c or tcp.c. This removes the requirement that ethtool for example be tied to the support of a specific L3 protocol (ethtool uses an AF_INET socket today). Signed-off-by: David Decotigny Signed-off-by: David S. Miller --- diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index c8416792cce0..215fc08c02ab 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1033,6 +1033,14 @@ static int netlink_getname(struct socket *sock, struct sockaddr *addr, return 0; } +static int netlink_ioctl(struct socket *sock, unsigned int cmd, + unsigned long arg) +{ + /* try to hand this ioctl down to the NIC drivers. + */ + return -ENOIOCTLCMD; +} + static struct sock *netlink_getsockbyportid(struct sock *ssk, u32 portid) { struct sock *sock; @@ -2494,7 +2502,7 @@ static const struct proto_ops netlink_ops = { .accept = sock_no_accept, .getname = netlink_getname, .poll = datagram_poll, - .ioctl = sock_no_ioctl, + .ioctl = netlink_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, .setsockopt = netlink_setsockopt,