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,