Commit | Line | Data |
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6bc506b4 IS |
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> | |
7 | ||
8 | #include "br_private.h" | |
9 | ||
10 | static int br_switchdev_mark_get(struct net_bridge *br, struct net_device *dev) | |
11 | { | |
12 | struct net_bridge_port *p; | |
13 | ||
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; | |
18 | } | |
19 | ||
20 | return ++br->offload_fwd_mark; | |
21 | } | |
22 | ||
23 | int nbp_switchdev_mark_set(struct net_bridge_port *p) | |
24 | { | |
25 | struct switchdev_attr attr = { | |
26 | .orig_dev = p->dev, | |
27 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, | |
28 | }; | |
29 | int err; | |
30 | ||
31 | ASSERT_RTNL(); | |
32 | ||
33 | err = switchdev_port_attr_get(p->dev, &attr); | |
34 | if (err) { | |
35 | if (err == -EOPNOTSUPP) | |
36 | return 0; | |
37 | return err; | |
38 | } | |
39 | ||
40 | p->offload_fwd_mark = br_switchdev_mark_get(p->br, p->dev); | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | void nbp_switchdev_frame_mark(const struct net_bridge_port *p, | |
46 | struct sk_buff *skb) | |
47 | { | |
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; | |
50 | } | |
51 | ||
52 | bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, | |
53 | const struct sk_buff *skb) | |
54 | { | |
55 | return !skb->offload_fwd_mark || | |
56 | BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark; | |
57 | } |