The previous commit introduced parse_protocol callback which should
extract the protocol number from the L2 header. Make all Ethernet
devices support it.
Signed-off-by: Maxim Mikityanskiy <maxi...@mellanox.com>
---
include/linux/etherdevice.h | 1 +
net/ethernet/eth.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 2c0af7b00715..e2f3b21cd72a 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -44,6 +44,7 @@ int eth_header_cache(const struct neighbour *neigh, struct
hh_cache *hh,
__be16 type);
void eth_header_cache_update(struct hh_cache *hh, const struct net_device *dev,
const unsigned char *haddr);
+__be16 eth_header_parse_protocol(const struct sk_buff *skb);
int eth_prepare_mac_addr_change(struct net_device *dev, void *p);
void eth_commit_mac_addr_change(struct net_device *dev, void *p);
int eth_mac_addr(struct net_device *dev, void *p);
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 4c520110b04f..f7a3d7a171c7 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -264,6 +264,18 @@ void eth_header_cache_update(struct hh_cache *hh,
}
EXPORT_SYMBOL(eth_header_cache_update);
+/**
+ * eth_header_parser_protocol - extract protocol from L2 header
+ * @skb: packet to extract protocol from
+ */
+__be16 eth_header_parse_protocol(const struct sk_buff *skb)
+{
+ const struct ethhdr *eth = eth_hdr(skb);
+
+ return eth->h_proto;
+}
+EXPORT_SYMBOL(eth_header_parse_protocol);
+
/**
* eth_prepare_mac_addr_change - prepare for mac change
* @dev: network device
@@ -346,6 +358,7 @@ const struct header_ops eth_header_ops
____cacheline_aligned = {
.parse = eth_header_parse,
.cache = eth_header_cache,
.cache_update = eth_header_cache_update,
+ .parse_protocol = eth_header_parse_protocol,
};
/**
--
2.19.1
