[PATCH net-next v9 1/8] hsr: Add header_ops::parse_protocol

af_packet uses dev_parse_header_protocol() to assign skb::protocol.
The hsr stack does not assign a callback so the field is assigned to 0.

There is nothing known to be broken because this is missing. Having a
callback assigned makes it possible to use the protocol field later in
the series by packets which originate from the AF_PACKET interface.

The header used by the HSR stack corresponds to the ethernet header for
the "first" part so the protocol member is at the same position.

Use eth_header_parse_protocol() for the hsr_header_ops's parse_protocol
callback.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 net/hsr/hsr_device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index d14de44e14b7a..6d96bc4a12446 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c

@@ -247,6 +247,7 @@ static netdev_tx_t hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 static const struct header_ops hsr_header_ops = {
 	.create	 = eth_header,
 	.parse	 = eth_header_parse,
+	.parse_protocol = eth_header_parse_protocol,
 };
 
 static struct sk_buff *hsr_init_skb(struct hsr_port *master, int extra)

-- 
2.55.0