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tc: m_vlan: Add priority option to push vlan action

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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>
This commit is contained in:
Hadar Hen Zion 2016-09-01 09:45:48 +03:00 committed by Stephen Hemminger
parent 745d917260
commit 0e43ed9dea
2 changed files with 26 additions and 1 deletions
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5
man/man8/tc-vlan.8
View File

@ -12,6 +12,8 @@ vlan - vlan manipulation module
.IR PUSH " := "
.BR push " [ " protocol
.IR VLANPROTO " ]"
.BR " [ " priority
.IR VLANPRIO " ] "
.BI id " VLANID"
.ti -8
@ -55,6 +57,9 @@ for hexadecimal interpretation, etc.).
Choose the VLAN protocol to use. At the time of writing, the kernel accepts only
.BR 802.1Q " or " 802.1ad .
.TP
.BI priority " VLANPRIO"
Choose the VLAN priority to use. Decimal number in range of 0-7.
.TP
.I CONTROL
How to continue after executing this action.
.RS

22
tc/m_vlan.c
View File

@ -22,7 +22,7 @@
static void explain(void)
{
fprintf(stderr, "Usage: vlan pop\n");
fprintf(stderr, " vlan push [ protocol VLANPROTO ] id VLANID [CONTROL]\n");
fprintf(stderr, " vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n");
fprintf(stderr, " VLANPROTO is one of 802.1Q or 802.1AD\n");
fprintf(stderr, " with default: 802.1Q\n");
fprintf(stderr, " CONTROL := reclassify | pipe | drop | continue | pass\n");
@ -45,6 +45,8 @@ static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
int id_set = 0;
__u16 proto;
int proto_set = 0;
__u8 prio;
int prio_set = 0;
struct tc_vlan parm = { 0 };
if (matches(*argv, "vlan") != 0)
@ -91,6 +93,17 @@ static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
if (ll_proto_a2n(&proto, *argv))
invarg("protocol is invalid", *argv);
proto_set = 1;
} else if (matches(*argv, "priority") == 0) {
if (action != TCA_VLAN_ACT_PUSH) {
fprintf(stderr, "\"%s\" is only valid for push\n",
*argv);
explain();
return -1;
}
NEXT_ARG();
if (get_u8(&prio, *argv, 0) || (prio & ~0x7))
invarg("prio is invalid", *argv);
prio_set = 1;
} else if (matches(*argv, "help") == 0) {
usage();
} else {
@ -138,6 +151,9 @@ static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PROTOCOL, &proto, 2);
}
if (prio_set)
addattr8(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PRIORITY, prio);
tail->rta_len = (char *)NLMSG_TAIL(n) - (char *)tail;
*argc_p = argc;
@ -180,6 +196,10 @@ static int print_vlan(struct action_util *au, FILE *f, struct rtattr *arg)
ll_proto_n2a(rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]),
b1, sizeof(b1)));
}
if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) {
val = rta_getattr_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);
fprintf(f, " priority %u", val);
}
break;
}
fprintf(f, " %s", action_n2a(parm->action));