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Commit c7797baf authored by John Fastabend's avatar John Fastabend Committed by David S. Miller
Browse files

dcb: Add DCBX capabilities bitmask to the get_ieee response 



Adding the capabilities bitmask to the get_ieee response allows
user space to determine the current DCBX mode. Either CEE or IEEE
this is useful with devices that support switching between modes
where knowing the current state is relevant.

Derived from work by Mark Rustad

Signed-off-by: default avatarJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f4b5ad26

net/dcb/dcbnl.c

+12 −0
Original line number Diff line number Diff line
@@ -1288,6 +1288,7 @@ static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, 
	struct nlattr *ieee, *app;

	struct dcb_app_type *itr;

	const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;

	int dcbx;

	int err;



	if (!ops)
@@ -1338,6 +1339,12 @@ static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, 
			}

		}

	}



	if (netdev->dcbnl_ops->getdcbx)

		dcbx = netdev->dcbnl_ops->getdcbx(netdev);

	else

		dcbx = -EOPNOTSUPP;



	spin_unlock(&dcb_lock);

	nla_nest_end(skb, app);
@@ -1366,6 +1373,11 @@ static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb, 
	}



	nla_nest_end(skb, ieee);

	if (dcbx >= 0) {

		err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);

		if (err)

			goto nla_put_failure;

	}

	nlmsg_end(skb, nlh);



	return rtnl_unicast(skb, &init_net, pid);