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Commit b5899679 authored by Andy Roulin's avatar Andy Roulin Committed by David S. Miller
Browse files

net: dev: add generic protodown handler 



Introduce dev_change_proto_down_generic, a generic ndo_change_proto_down
implementation, which sets the netdev carrier state according to proto_down.

This adds the ability to set protodown on vxlan and macvlan devices in a
generic way for use by control protocols like VRRPD.

Signed-off-by: default avatarAndy Roulin <aroulin@cumulusnetworks.com>
Acked-by: default avatarRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45c0e7b2

include/linux/netdevice.h

+1 −0
Original line number Diff line number Diff line
@@ -3673,6 +3673,7 @@ int dev_get_port_parent_id(struct net_device *dev, 
			   struct netdev_phys_item_id *ppid, bool recurse);

bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);

int dev_change_proto_down(struct net_device *dev, bool proto_down);

int dev_change_proto_down_generic(struct net_device *dev, bool proto_down);

struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);

struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,

				    struct netdev_queue *txq, int *ret);

net/core/dev.c

+19 −0
Original line number Diff line number Diff line
@@ -7954,6 +7954,25 @@ int dev_change_proto_down(struct net_device *dev, bool proto_down) 
}

EXPORT_SYMBOL(dev_change_proto_down);



/**

 *	dev_change_proto_down_generic - generic implementation for

 * 	ndo_change_proto_down that sets carrier according to

 * 	proto_down.

 *

 *	@dev: device

 *	@proto_down: new value

 */

int dev_change_proto_down_generic(struct net_device *dev, bool proto_down)

{

	if (proto_down)

		netif_carrier_off(dev);

	else

		netif_carrier_on(dev);

	dev->proto_down = proto_down;

	return 0;

}

EXPORT_SYMBOL(dev_change_proto_down_generic);



u32 __dev_xdp_query(struct net_device *dev, bpf_op_t bpf_op,

		    enum bpf_netdev_command cmd)

{