1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/kernel.h>
3 #include <linux/list.h>
4 #include <linux/netdevice.h>
5 #include <linux/rtnetlink.h>
6 #include <linux/skbuff.h>
7 #include <net/switchdev.h>
9 #include "br_private.h"
11 static int br_switchdev_mark_get(struct net_bridge *br, struct net_device *dev)
13 struct net_bridge_port *p;
15 /* dev is yet to be added to the port list. */
16 list_for_each_entry(p, &br->port_list, list) {
17 if (switchdev_port_same_parent_id(dev, p->dev))
18 return p->offload_fwd_mark;
21 return ++br->offload_fwd_mark;
24 int nbp_switchdev_mark_set(struct net_bridge_port *p)
26 struct switchdev_attr attr = {
28 .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
34 err = switchdev_port_attr_get(p->dev, &attr);
36 if (err == -EOPNOTSUPP)
41 p->offload_fwd_mark = br_switchdev_mark_get(p->br, p->dev);
46 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
49 if (skb->offload_fwd_mark && !WARN_ON_ONCE(!p->offload_fwd_mark))
50 BR_INPUT_SKB_CB(skb)->offload_fwd_mark = p->offload_fwd_mark;
53 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
54 const struct sk_buff *skb)
56 return !skb->offload_fwd_mark ||
57 BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark;
60 /* Flags that can be offloaded to hardware */
61 #define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
62 BR_MCAST_FLOOD | BR_BCAST_FLOOD)
64 int br_switchdev_set_port_flag(struct net_bridge_port *p,
68 struct switchdev_attr attr = {
70 .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
74 if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD)
77 err = switchdev_port_attr_get(p->dev, &attr);
78 if (err == -EOPNOTSUPP)
83 /* Check if specific bridge flag attribute offload is supported */
84 if (!(attr.u.brport_flags_support & mask)) {
85 br_warn(p->br, "bridge flag offload is not supported %u(%s)\n",
86 (unsigned int)p->port_no, p->dev->name);
90 attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
91 attr.flags = SWITCHDEV_F_DEFER;
92 attr.u.brport_flags = flags;
93 err = switchdev_port_attr_set(p->dev, &attr);
95 br_warn(p->br, "error setting offload flag on port %u(%s)\n",
96 (unsigned int)p->port_no, p->dev->name);
104 br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
105 u16 vid, struct net_device *dev,
108 struct switchdev_notifier_fdb_info info;
109 unsigned long notifier_type;
113 info.added_by_user = added_by_user;
114 notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
115 call_switchdev_notifiers(notifier_type, dev, &info.info);
119 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
126 br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
132 br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
140 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags)
142 struct switchdev_obj_port_vlan v = {
144 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
150 return switchdev_port_obj_add(dev, &v.obj);
153 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
155 struct switchdev_obj_port_vlan v = {
157 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
162 return switchdev_port_obj_del(dev, &v.obj);