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From 22e8b65ea4bf8a1fa757137bdcbdefe505fa4044 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Mon, 7 Aug 2017 16:35:43 +0200
Subject: [PATCH 39/57] net-next: dsa: add flow_dissect callback to struct
dsa_device_ops
When the flow dissector first sees packets coming in on a DSA devices the
802.3 header wont be located where the code expects it to be as the tag
is still present. Adding this new callback allows a DSA device to provide a
new function that the flow_disscetor can use to get the correct offsets
for the protocol field and network header offset.
Signed-off-by: John Crispin <john@phrozen.org>
---
include/net/dsa.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -90,9 +90,11 @@ struct packet_type;
struct dsa_device_ops {
struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
- int sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
+ int (*rcv)(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt,
struct net_device *orig_dev);
+ int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
+ int *offset);
};
struct dsa_switch_tree {
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