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
;
59 /* Flags that can be offloaded to hardware */
60 #define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
61 BR_MCAST_FLOOD | BR_BCAST_FLOOD)
63 int br_switchdev_set_port_flag(struct net_bridge_port
*p
,
67 struct switchdev_attr attr
= {
69 .id
= SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT
,
73 if (mask
& ~BR_PORT_FLAGS_HW_OFFLOAD
)
76 err
= switchdev_port_attr_get(p
->dev
, &attr
);
77 if (err
== -EOPNOTSUPP
)
82 /* Check if specific bridge flag attribute offload is supported */
83 if (!(attr
.u
.brport_flags_support
& mask
)) {
84 br_warn(p
->br
, "bridge flag offload is not supported %u(%s)\n",
85 (unsigned int)p
->port_no
, p
->dev
->name
);
89 attr
.id
= SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
;
90 attr
.flags
= SWITCHDEV_F_DEFER
;
91 attr
.u
.brport_flags
= flags
;
92 err
= switchdev_port_attr_set(p
->dev
, &attr
);
94 br_warn(p
->br
, "error setting offload flag on port %u(%s)\n",
95 (unsigned int)p
->port_no
, p
->dev
->name
);
103 br_switchdev_fdb_call_notifiers(bool adding
, const unsigned char *mac
,
104 u16 vid
, struct net_device
*dev
)
106 struct switchdev_notifier_fdb_info info
;
107 unsigned long notifier_type
;
111 notifier_type
= adding
? SWITCHDEV_FDB_ADD_TO_DEVICE
: SWITCHDEV_FDB_DEL_TO_DEVICE
;
112 call_switchdev_notifiers(notifier_type
, dev
, &info
.info
);
116 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry
*fdb
, int type
)
118 if (!fdb
->added_by_user
)
123 br_switchdev_fdb_call_notifiers(false, fdb
->addr
.addr
,
128 br_switchdev_fdb_call_notifiers(true, fdb
->addr
.addr
,