diff options
| author | Eran Ben Elisha <eranbe@nvidia.com> | 2021-01-12 21:07:12 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-14 18:24:53 -0800 |
| commit | 71854255820d1a479654bd2e98483129c588c118 (patch) | |
| tree | af915e48b68c266120974361f010052fa4f8bfc5 /net | |
| parent | e3a7670737ecd7eb55b5c5e1900678e2a2e51ef9 (diff) | |
| download | linux-71854255820d1a479654bd2e98483129c588c118.tar.bz2 | |
net: vlan: Add parse protocol header ops
Add parse protocol header ops for vlan device. Before this patch, vlan
tagged packet transmitted by af_packet had skb->protocol unset. Some
kernel methods (like __skb_flow_dissect()) rely on this missing information
for its packet processing.
Signed-off-by: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/8021q/vlan_dev.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index ec8408d1638f..dc1a197792e6 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -510,9 +510,17 @@ static void vlan_dev_set_lockdep_class(struct net_device *dev) netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, NULL); } +static __be16 vlan_parse_protocol(const struct sk_buff *skb) +{ + struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data); + + return __vlan_get_protocol(skb, veth->h_vlan_proto, NULL); +} + static const struct header_ops vlan_header_ops = { .create = vlan_dev_hard_header, .parse = eth_header_parse, + .parse_protocol = vlan_parse_protocol, }; static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev, @@ -532,6 +540,7 @@ static int vlan_passthru_hard_header(struct sk_buff *skb, struct net_device *dev static const struct header_ops vlan_passthru_header_ops = { .create = vlan_passthru_hard_header, .parse = eth_header_parse, + .parse_protocol = vlan_parse_protocol, }; static struct device_type vlan_type = { |