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Diffstat (limited to 'net/core/flow_dissector.c')
-rw-r--r--net/core/flow_dissector.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 0cc672aba1f0..5b5be9577257 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -4,6 +4,7 @@
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/if_vlan.h>
+#include <net/dsa.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/gre.h>
@@ -440,6 +441,17 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
skb->vlan_proto : skb->protocol;
nhoff = skb_network_offset(skb);
hlen = skb_headlen(skb);
+ if (unlikely(netdev_uses_dsa(skb->dev))) {
+ const struct dsa_device_ops *ops;
+ int offset;
+
+ ops = skb->dev->dsa_ptr->tag_ops;
+ if (ops->flow_dissect &&
+ !ops->flow_dissect(skb, &proto, &offset)) {
+ hlen -= offset;
+ nhoff += offset;
+ }
+ }
}
/* It is ensured by skb_flow_dissector_init() that control key will