diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2019-11-11 20:38:46 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-12 19:46:27 -0800 |
| commit | 129bd7ca8ac0b517c85daa8174ae073db7187b06 (patch) | |
| tree | 70eba070ecc99ad8cc085c7e4a5ce8b93aa2e651 | |
| parent | 46cb01eeeb86fca6afe24dda1167b0cb95424e29 (diff) | |
| download | linux-129bd7ca8ac0b517c85daa8174ae073db7187b06.tar.bz2 | |
net: dsa: Prevent usage of NET_DSA_TAG_8021Q as tagging protocol
It is possible for a switch driver to use NET_DSA_TAG_8021Q as a valid
DSA tagging protocol since it registers itself as such, unfortunately
since there are not xmit or rcv functions provided, the lack of a xmit()
function will lead to a NPD in dsa_slave_xmit() to start with.
net/dsa/tag_8021q.c is only comprised of a set of helper functions at
the moment, but is not a fully autonomous or functional tagging "driver"
(though it could become later on). We do not have any users of
NET_DSA_TAG_8021Q so now is a good time to make sure there are not
issues being encountered by making this file strictly a place holder for
helper functions.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/dsa/Kconfig | 2 | ||||
| -rw-r--r-- | net/dsa/tag_8021q.c | 9 |
2 files changed, 1 insertions, 10 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig index 29e2bd5cc5af..136612792c08 100644 --- a/net/dsa/Kconfig +++ b/net/dsa/Kconfig @@ -20,7 +20,7 @@ if NET_DSA # tagging formats config NET_DSA_TAG_8021Q - tristate "Tag driver for switches using custom 802.1Q VLAN headers" + tristate select VLAN_8021Q help Unlike the other tagging protocols, the 802.1Q config option simply diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c index bc5cb91bf052..73632d21f1a6 100644 --- a/net/dsa/tag_8021q.c +++ b/net/dsa/tag_8021q.c @@ -341,13 +341,4 @@ struct sk_buff *dsa_8021q_remove_header(struct sk_buff *skb) } EXPORT_SYMBOL_GPL(dsa_8021q_remove_header); -static const struct dsa_device_ops dsa_8021q_netdev_ops = { - .name = "8021q", - .proto = DSA_TAG_PROTO_8021Q, - .overhead = VLAN_HLEN, -}; - MODULE_LICENSE("GPL v2"); -MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_8021Q); - -module_dsa_tag_driver(dsa_8021q_netdev_ops); |