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switchdev: skip over ports returning -EOPNOTSUPP when recursing ports

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This allows us to recurse over all the ports, skipping over unsupporting
ports.  Without the change, the recursion would stop at first unsupported
port.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman 2015-10-08 19:23:18 -07:00 committed by David S. Miller
parent f55ac58ae6
commit 464314ea6c
2 changed files with 9 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/net/switchdev.h
View file

@ -16,6 +16,7 @@
#include <linux/list.h>
#define SWITCHDEV_F_NO_RECURSE BIT(0)
#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
struct switchdev_trans_item {
struct list_head list;

9
net/switchdev/switchdev.c
View file

@ -147,7 +147,7 @@ static int __switchdev_port_attr_set(struct net_device *dev,
return ops->switchdev_port_attr_set(dev, attr, trans);
if (attr->flags & SWITCHDEV_F_NO_RECURSE)
return err;
goto done;
/* Switch device port(s) may be stacked under
* bond/team/vlan dev, so recurse down to set attr on
@ -156,10 +156,17 @@ static int __switchdev_port_attr_set(struct net_device *dev,
netdev_for_each_lower_dev(dev, lower_dev, iter) {
err = __switchdev_port_attr_set(lower_dev, attr, trans);
if (err == -EOPNOTSUPP &&
attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP)
continue;
if (err)
break;
}
done:
if (err == -EOPNOTSUPP && attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP)
err = 0;
return err;
}