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 (netdev_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 netdev_phys_item_id ppid = { };
31 err = dev_get_port_parent_id(p->dev, &ppid, true);
33 if (err == -EOPNOTSUPP)
38 p->offload_fwd_mark = br_switchdev_mark_get(p->br, p->dev);
43 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
46 if (skb->offload_fwd_mark && !WARN_ON_ONCE(!p->offload_fwd_mark))
47 BR_INPUT_SKB_CB(skb)->offload_fwd_mark = p->offload_fwd_mark;
50 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
51 const struct sk_buff *skb)
53 return !skb->offload_fwd_mark ||
54 BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark;
57 /* Flags that can be offloaded to hardware */
58 #define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
59 BR_MCAST_FLOOD | BR_BCAST_FLOOD)
61 int br_switchdev_set_port_flag(struct net_bridge_port *p,
64 struct netlink_ext_ack *extack)
66 struct switchdev_attr attr = {
69 struct switchdev_notifier_port_attr_info info = {
74 mask &= BR_PORT_FLAGS_HW_OFFLOAD;
78 attr.id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS;
79 attr.u.brport_flags.val = flags;
80 attr.u.brport_flags.mask = mask;
82 /* We run from atomic context here */
83 err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev,
85 err = notifier_to_errno(err);
86 if (err == -EOPNOTSUPP)
90 if (extack && !extack->_msg)
91 NL_SET_ERR_MSG_MOD(extack,
92 "bridge flag offload is not supported");
96 attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
97 attr.flags = SWITCHDEV_F_DEFER;
99 err = switchdev_port_attr_set(p->dev, &attr, extack);
101 if (extack && !extack->_msg)
102 NL_SET_ERR_MSG_MOD(extack,
103 "error setting offload flag on port");
111 br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
112 u16 vid, struct net_device *dev,
113 bool added_by_user, bool offloaded)
115 struct switchdev_notifier_fdb_info info;
116 unsigned long notifier_type;
120 info.added_by_user = added_by_user;
121 info.offloaded = offloaded;
122 notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
123 call_switchdev_notifiers(notifier_type, dev, &info.info, NULL);
127 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
134 br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
137 test_bit(BR_FDB_ADDED_BY_USER,
139 test_bit(BR_FDB_OFFLOADED,
143 br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
146 test_bit(BR_FDB_ADDED_BY_USER,
148 test_bit(BR_FDB_OFFLOADED,
154 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
155 struct netlink_ext_ack *extack)
157 struct switchdev_obj_port_vlan v = {
159 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
164 return switchdev_port_obj_add(dev, &v.obj, extack);
167 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
169 struct switchdev_obj_port_vlan v = {
171 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
175 return switchdev_port_obj_del(dev, &v.obj);