1 #include <linux/kernel.h>
2 #include <linux/list.h>
3 #include <linux/netdevice.h>
4 #include <linux/rtnetlink.h>
5 #include <linux/skbuff.h>
6 #include <net/switchdev.h>
8 #include "br_private.h"
10 static int br_switchdev_mark_get(struct net_bridge
*br
, struct net_device
*dev
)
12 struct net_bridge_port
*p
;
14 /* dev is yet to be added to the port list. */
15 list_for_each_entry(p
, &br
->port_list
, list
) {
16 if (switchdev_port_same_parent_id(dev
, p
->dev
))
17 return p
->offload_fwd_mark
;
20 return ++br
->offload_fwd_mark
;
23 int nbp_switchdev_mark_set(struct net_bridge_port
*p
)
25 struct switchdev_attr attr
= {
27 .id
= SWITCHDEV_ATTR_ID_PORT_PARENT_ID
,
33 err
= switchdev_port_attr_get(p
->dev
, &attr
);
35 if (err
== -EOPNOTSUPP
)
40 p
->offload_fwd_mark
= br_switchdev_mark_get(p
->br
, p
->dev
);
45 void nbp_switchdev_frame_mark(const struct net_bridge_port
*p
,
48 if (skb
->offload_fwd_mark
&& !WARN_ON_ONCE(!p
->offload_fwd_mark
))
49 BR_INPUT_SKB_CB(skb
)->offload_fwd_mark
= p
->offload_fwd_mark
;
52 bool nbp_switchdev_allowed_egress(const struct net_bridge_port
*p
,
53 const struct sk_buff
*skb
)
55 return !skb
->offload_fwd_mark
||
56 BR_INPUT_SKB_CB(skb
)->offload_fwd_mark
!= p
->offload_fwd_mark
;