[net-next PATCH v2 1/7] dcb: Add DCBX capabilities bitmask to the get_ieee response
From: John Fastabend <hidden>
Date: 2011-06-21 17:41:09
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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: John Fastabend <redacted> --- net/dcb/dcbnl.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index ed1bb8c..3a6d97d 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c@@ -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);