Classification according to vlan id and vlan priority.
Example script that adds vlan filter:
# add ingress qdisc
tc qdisc add dev ens4f0 ingress
# add a flower filter with vlan id and priority classification
tc filter add dev ens4f0 protocol 802.1Q parent ffff: \
flower \
indev ens4f0 \
vlan_ethtype ipv4 \
vlan_id 100 \
vlan_prio 3 \
action vlan pop
Signed-off-by: Hadar Hen Zion <had...@mellanox.com>
---
include/linux/pkt_cls.h | 5 +++
include/linux/tc_act/tc_vlan.h | 3 ++
man/man8/tc-flower.8 | 25 ++++++++++++-
tc/f_flower.c | 80 ++++++++++++++++++++++++++++++++++++++++--
4 files changed, 109 insertions(+), 4 deletions(-)
diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h
index 5e6c61e..25a8fae 100644
--- a/include/linux/pkt_cls.h
+++ b/include/linux/pkt_cls.h
@@ -374,6 +374,11 @@ enum {
TCA_FLOWER_KEY_UDP_DST, /* be16 */
TCA_FLOWER_FLAGS,
+
+ TCA_FLOWER_KEY_VLAN_ID,
+ TCA_FLOWER_KEY_VLAN_PRIO,
+ TCA_FLOWER_KEY_VLAN_ETH_TYPE,
+
__TCA_FLOWER_MAX,
};
diff --git a/include/linux/tc_act/tc_vlan.h b/include/linux/tc_act/tc_vlan.h
index 31151ff..26ae695 100644
--- a/include/linux/tc_act/tc_vlan.h
+++ b/include/linux/tc_act/tc_vlan.h
@@ -16,6 +16,9 @@
#define TCA_VLAN_ACT_POP 1
#define TCA_VLAN_ACT_PUSH 2
+#define VLAN_PRIO_MASK 0x7
+#define VLAN_VID_MASK 0x0fff
+
struct tc_vlan {
tc_gen;
diff --git a/man/man8/tc-flower.8 b/man/man8/tc-flower.8
index 9ae10e6..74f7664 100644
--- a/man/man8/tc-flower.8
+++ b/man/man8/tc-flower.8
@@ -23,7 +23,13 @@ flower \- flow based traffic control filter
.R " | { "
.BR dst_mac " | " src_mac " } "
.IR mac_address " | "
-.BR eth_type " { " ipv4 " | " ipv6 " | "
+.BR eth_type " { " ipv4 " | " ipv6 " | " 802.1Q " | "
+.IR ETH_TYPE " } | "
+.B vlan_id
+.IR VID " | "
+.B vlan_prio
+.IR PRIORITY " | "
+.BR vlan_eth_type " { " ipv4 " | " ipv6 " | "
.IR ETH_TYPE " } | "
.BR ip_proto " { " tcp " | " udp " | "
.IR IP_PROTO " } | { "
@@ -70,6 +76,23 @@ Do not process filter by hardware.
Match on source or destination MAC address.
.TP
.BI eth_type " ETH_TYPE"
+Match on the next protocol.
+.I ETH_TYPE
+may be either
+.BR ipv4 , ipv6 , 802.1Q ,
+or an unsigned 16bit value in hexadecimal format.
+.TP
+.BI vlan_id " VID"
+Match on vlan tag id.
+.I VID
+is an unsigned 12bit value in decimal format.
+.TP
+.BI vlan_prio " priority"
+Match on vlan tag priority.
+.I PRIORITY
+is an unsigned 3bit value in decimal format.
+.TP
+.BI vlan_eth_type " VLAN_ETH_TYPE"
Match on layer three protocol.
.I ETH_TYPE
may be either
diff --git a/tc/f_flower.c b/tc/f_flower.c
index 791ade7..2ab2de1 100644
--- a/tc/f_flower.c
+++ b/tc/f_flower.c
@@ -17,6 +17,7 @@
#include <net/if.h>
#include <linux/if_ether.h>
#include <linux/ip.h>
+#include <linux/tc_act/tc_vlan.h>
#include "utils.h"
#include "tc_util.h"
@@ -30,6 +31,9 @@ static void explain(void)
fprintf(stderr, "\n");
fprintf(stderr, "Where: MATCH-LIST := [ MATCH-LIST ] MATCH\n");
fprintf(stderr, " MATCH := { indev DEV-NAME |\n");
+ fprintf(stderr, " vlan_id VID |\n");
+ fprintf(stderr, " vlan_prio PRIORITY |\n");
+ fprintf(stderr, " vlan_ethtype [ ipv4 | ipv6 |
ETH-TYPE ] |\n");
fprintf(stderr, " dst_mac MAC-ADDR |\n");
fprintf(stderr, " src_mac MAC-ADDR |\n");
fprintf(stderr, " [ipv4 | ipv6 ] |\n");
@@ -61,6 +65,24 @@ static int flower_parse_eth_addr(char *str, int addr_type,
int mask_type,
return 0;
}
+static int flower_parse_vlan_eth_type(char *str, __be16 eth_type, int type,
+ __be16 *p_vlan_eth_type,
+ struct nlmsghdr *n)
+{
+ __be16 vlan_eth_type;
+
+ if (eth_type != htons(ETH_P_8021Q)) {
+ fprintf(stderr, "Can't set \"vlan_ethtype\" if ethertype isn't
802.1Q\n");
+ return -1;
+ }
+
+ if (ll_proto_a2n(&vlan_eth_type, str))
+ invarg("invalid vlan_ethtype", str);
+ addattr16(n, MAX_MSG, type, vlan_eth_type);
+ *p_vlan_eth_type = vlan_eth_type;
+ return 0;
+}
+
static int flower_parse_ip_proto(char *str, __be16 eth_type, int type,
__u8 *p_ip_proto, struct nlmsghdr *n)
{
@@ -167,6 +189,7 @@ static int flower_parse_opt(struct filter_util *qu, char
*handle,
struct tcmsg *t = NLMSG_DATA(n);
struct rtattr *tail;
__be16 eth_type = TC_H_MIN(t->tcm_info);
+ __be16 vlan_ethtype = 0;
__u8 ip_proto = 0xff;
__u32 flags = 0;
@@ -208,6 +231,42 @@ static int flower_parse_opt(struct filter_util *qu, char
*handle,
NEXT_ARG();
strncpy(ifname, *argv, sizeof(ifname) - 1);
addattrstrz(n, MAX_MSG, TCA_FLOWER_INDEV, ifname);
+ } else if (matches(*argv, "vlan_id") == 0) {
+ __u16 vid;
+
+ NEXT_ARG();
+ if (eth_type != htons(ETH_P_8021Q)) {
+ fprintf(stderr, "Can't set \"vlan_id\" if
ethertype isn't 802.1Q\n");
+ return -1;
+ }
+ ret = get_u16(&vid, *argv, 10);
+ if (ret < 0 || vid & ~0xfff) {
+ fprintf(stderr, "Illegal \"vlan_id\"\n");
+ return -1;
+ }
+ addattr16(n, MAX_MSG, TCA_FLOWER_KEY_VLAN_ID, vid);
+ } else if (matches(*argv, "vlan_prio") == 0) {
+ __u8 vlan_prio;
+
+ NEXT_ARG();
+ if (eth_type != htons(ETH_P_8021Q)) {
+ fprintf(stderr, "Can't set \"vlan_prio\" if
ethertype isn't 802.1Q\n");
+ return -1;
+ }
+ ret = get_u8(&vlan_prio, *argv, 10);
+ if (ret < 0 || vlan_prio & ~VLAN_PRIO_MASK) {
+ fprintf(stderr, "Illegal \"vlan_prio\"\n");
+ return -1;
+ }
+ addattr8(n, MAX_MSG, TCA_FLOWER_KEY_VLAN_PRIO,
+ vlan_prio);
+ } else if (matches(*argv, "vlan_ethtype") == 0) {
+ NEXT_ARG();
+ ret = flower_parse_vlan_eth_type(*argv, eth_type,
+
TCA_FLOWER_KEY_VLAN_ETH_TYPE,
+ &vlan_ethtype, n);
+ if (ret < 0)
+ return -1;
} else if (matches(*argv, "dst_mac") == 0) {
NEXT_ARG();
ret = flower_parse_eth_addr(*argv,
@@ -230,7 +289,8 @@ static int flower_parse_opt(struct filter_util *qu, char
*handle,
}
} else if (matches(*argv, "ip_proto") == 0) {
NEXT_ARG();
- ret = flower_parse_ip_proto(*argv, eth_type,
+ ret = flower_parse_ip_proto(*argv, vlan_ethtype ?
+ vlan_ethtype : eth_type,
TCA_FLOWER_KEY_IP_PROTO,
&ip_proto, n);
if (ret < 0) {
@@ -239,7 +299,8 @@ static int flower_parse_opt(struct filter_util *qu, char
*handle,
}
} else if (matches(*argv, "dst_ip") == 0) {
NEXT_ARG();
- ret = flower_parse_ip_addr(*argv, eth_type,
+ ret = flower_parse_ip_addr(*argv, vlan_ethtype ?
+ vlan_ethtype : eth_type,
TCA_FLOWER_KEY_IPV4_DST,
TCA_FLOWER_KEY_IPV4_DST_MASK,
TCA_FLOWER_KEY_IPV6_DST,
@@ -251,7 +312,8 @@ static int flower_parse_opt(struct filter_util *qu, char
*handle,
}
} else if (matches(*argv, "src_ip") == 0) {
NEXT_ARG();
- ret = flower_parse_ip_addr(*argv, eth_type,
+ ret = flower_parse_ip_addr(*argv, vlan_ethtype ?
+ vlan_ethtype : eth_type,
TCA_FLOWER_KEY_IPV4_SRC,
TCA_FLOWER_KEY_IPV4_SRC_MASK,
TCA_FLOWER_KEY_IPV6_SRC,
@@ -477,6 +539,18 @@ static int flower_print_opt(struct filter_util *qu, FILE
*f,
fprintf(f, "\n indev %s", rta_getattr_str(attr));
}
+ if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
+ struct rtattr *attr = tb[TCA_FLOWER_KEY_VLAN_ID];
+
+ fprintf(f, "\n vlan_id %d", rta_getattr_u16(attr));
+ }
+
+ if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
+ struct rtattr *attr = tb[TCA_FLOWER_KEY_VLAN_PRIO];
+
+ fprintf(f, "\n vlan_prio %d", rta_getattr_u8(attr));
+ }
+
flower_print_eth_addr(f, "dst_mac", tb[TCA_FLOWER_KEY_ETH_DST],
tb[TCA_FLOWER_KEY_ETH_DST_MASK]);
flower_print_eth_addr(f, "src_mac", tb[TCA_FLOWER_KEY_ETH_SRC],
--
1.8.3.1
