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net_sched: act_vlan: Add priority option 

The current vlan push action supports only vid and protocol options.
Add priority option.

Example script that adds vlan push action with vid and
priority:

tc filter add dev veth0 protocol ip parent ffff: \
	   flower \
	   	indev veth0 \
	   action vlan push id 100 priority 5

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2016-08-17 13:36:14 +03:00 committed by David S. Miller
parent 9399ae9a6c
commit 956af37102
3 changed files with 13 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/tc_act/tc_vlan.h
View File

@ -20,6 +20,7 @@ struct tcf_vlan {
int tcfv_action;
u16 tcfv_push_vid;
__be16 tcfv_push_proto;
u8 tcfv_push_prio;
};
#define to_vlan(a) ((struct tcf_vlan *)a)

1
include/uapi/linux/tc_act/tc_vlan.h
View File

@ -29,6 +29,7 @@ enum {
TCA_VLAN_PUSH_VLAN_ID,
TCA_VLAN_PUSH_VLAN_PROTOCOL,
TCA_VLAN_PAD,
TCA_VLAN_PUSH_VLAN_PRIORITY,
__TCA_VLAN_MAX,
};
#define TCA_VLAN_MAX (__TCA_VLAN_MAX - 1)

13
net/sched/act_vlan.c
View File

@ -43,7 +43,8 @@ static int tcf_vlan(struct sk_buff *skb, const struct tc_action *a,
goto drop;
break;
case TCA_VLAN_ACT_PUSH:
err = skb_vlan_push(skb, v->tcfv_push_proto, v->tcfv_push_vid);
err = skb_vlan_push(skb, v->tcfv_push_proto, v->tcfv_push_vid |
(v->tcfv_push_prio << VLAN_PRIO_SHIFT));
if (err)
goto drop;
break;
@ -65,6 +66,7 @@ static const struct nla_policy vlan_policy[TCA_VLAN_MAX + 1] = {
[TCA_VLAN_PARMS] = { .len = sizeof(struct tc_vlan) },
[TCA_VLAN_PUSH_VLAN_ID] = { .type = NLA_U16 },
[TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NLA_U16 },
[TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NLA_U8 },
};
static int tcf_vlan_init(struct net *net, struct nlattr *nla,
@ -78,6 +80,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla,
int action;
__be16 push_vid = 0;
__be16 push_proto = 0;
u8 push_prio = 0;
bool exists = false;
int ret = 0, err;
@ -123,6 +126,9 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla,
} else {
push_proto = htons(ETH_P_8021Q);
}
if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY])
push_prio = nla_get_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);
break;
default:
if (exists)
@ -150,6 +156,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla,
v->tcfv_action = action;
v->tcfv_push_vid = push_vid;
v->tcfv_push_prio = push_prio;
v->tcfv_push_proto = push_proto;
v->tcf_action = parm->action;
@ -181,7 +188,9 @@ static int tcf_vlan_dump(struct sk_buff *skb, struct tc_action *a,
if (v->tcfv_action == TCA_VLAN_ACT_PUSH &&
(nla_put_u16(skb, TCA_VLAN_PUSH_VLAN_ID, v->tcfv_push_vid) ||
nla_put_be16(skb, TCA_VLAN_PUSH_VLAN_PROTOCOL,
v->tcfv_push_proto)))
v->tcfv_push_proto) ||
(nla_put_u8(skb, TCA_VLAN_PUSH_VLAN_PRIORITY,
v->tcfv_push_prio))))
goto nla_put_failure;
tcf_tm_dump(&t, &v->tcf_tm);