From: Anuradha Karuppiah <anurad...@cumulusnetworks.com>
protodown can be set by user space applications like MLAG on detecting
errors on a switch port. This patch provides sample switch driver changes
for handling protodown. Rocker PHYS disables the port in response to
protodown.
To test this unctionality I used the qemu-rocker patch that Scott sent out
in response to the v3 posting (needed to set link up/down when phy is
nabled/disabled).
Signed-off-by: Anuradha Karuppiah <anurad...@cumulusnetworks.com>
Signed-off-by: Andy Gospodarek <go...@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <ro...@cumulusnetworks.com>
Signed-off-by: Wilson Kok <w...@cumulusnetworks.com>
---
drivers/net/ethernet/rocker/rocker.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/rocker/rocker.c
b/drivers/net/ethernet/rocker/rocker.c
index 2d8578cade..10051fa 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -3983,7 +3983,8 @@ static int rocker_port_open(struct net_device *dev)
napi_enable(&rocker_port->napi_tx);
napi_enable(&rocker_port->napi_rx);
- rocker_port_set_enable(rocker_port, true);
+ if (!(dev->proto_flags & IF_PROTOF_DOWN))
+ rocker_port_set_enable(rocker_port, true);
netif_start_queue(dev);
return 0;
@@ -4167,6 +4168,21 @@ static int rocker_port_get_phys_port_name(struct
net_device *dev,
return err ? -EOPNOTSUPP : 0;
}
+static int rocker_port_change_proto_flags(struct net_device *dev,
+ unsigned int flags)
+{
+ struct rocker_port *rocker_port = netdev_priv(dev);
+
+ if (rocker_port->dev->flags & IFF_UP) {
+ if (flags & IF_PROTOF_DOWN)
+ rocker_port_set_enable(rocker_port, false);
+ else
+ rocker_port_set_enable(rocker_port, true);
+ }
+ rocker_port->dev->proto_flags = flags;
+ return 0;
+}
+
static const struct net_device_ops rocker_port_netdev_ops = {
.ndo_open = rocker_port_open,
.ndo_stop = rocker_port_stop,
@@ -4179,6 +4195,7 @@ static const struct net_device_ops rocker_port_netdev_ops
= {
.ndo_fdb_del = switchdev_port_fdb_del,
.ndo_fdb_dump = switchdev_port_fdb_dump,
.ndo_get_phys_port_name = rocker_port_get_phys_port_name,
+ .ndo_change_proto_flags = rocker_port_change_proto_flags,
};
/********************
--
1.7.10.4
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