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net/sched: flower: Add support for matching on vlan ethertype

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As flow dissector stores vlan ethertype, tc flower now can match on that.
It is to make preparation for supporting QinQ.

Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jianbo Liu 2018-07-06 05:38:13 +00:00 committed by David S. Miller
parent 2064c3d4c0
commit aaab08344d
1 changed files with 5 additions and 2 deletions
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7
net/sched/cls_flower.c
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@ -500,6 +500,7 @@ static int fl_set_key_mpls(struct nlattr **tb,
}
static void fl_set_key_vlan(struct nlattr **tb,
__be16 ethertype,
struct flow_dissector_key_vlan *key_val,
struct flow_dissector_key_vlan *key_mask)
{
@ -516,6 +517,8 @@ static void fl_set_key_vlan(struct nlattr **tb,
VLAN_PRIORITY_MASK;
key_mask->vlan_priority = VLAN_PRIORITY_MASK;
}
key_val->vlan_tpid = ethertype;
key_mask->vlan_tpid = cpu_to_be16(~0);
}
static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
@ -592,8 +595,8 @@ static int fl_set_key(struct net *net, struct nlattr **tb,
if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
if (ethertype == htons(ETH_P_8021Q)) {
fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
if (eth_type_vlan(ethertype)) {
fl_set_key_vlan(tb, ethertype, &key->vlan, &mask->vlan);
fl_set_key_val(tb, &key->basic.n_proto,
TCA_FLOWER_KEY_VLAN_ETH_TYPE,
&mask->basic.n_proto, TCA_FLOWER_UNSPEC,