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net: sched: allow flower to match vxlan options

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This patch is to allow matching gbp option in vxlan.

The options can be described in the form GBP/GBP_MASK,
where GBP is represented as a 32bit hexadecimal value.
Different from geneve, only one option can be set. And
also, geneve options and vxlan options can't be set at
the same time.

  # ip link add name vxlan0 type vxlan dstport 0 external
  # tc qdisc add dev vxlan0 ingress
  # tc filter add dev vxlan0 protocol ip parent ffff: \
      flower \
        enc_src_ip 10.0.99.192 \
        enc_dst_ip 10.0.99.193 \
        enc_key_id 11 \
        vxlan_opts 01020304/ffffffff \
        ip_proto udp \
        action mirred egress redirect dev eth0

v1->v2:
  - add .strict_start_type for enc_opts_policy as Jakub noticed.
  - use Duplicate instead of Wrong in err msg for extack as Jakub
    suggested.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2019-11-21 18:03:28 +08:00 • committed by David S. Miller
parent e20d4ff2ac
commit d8f9dfae49
2 changed files with 122 additions and 0 deletions
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13
include/uapi/linux/pkt_cls.h
View file

@ -571,6 +571,10 @@ enum {
* TCA_FLOWER_KEY_ENC_OPT_GENEVE_
* attributes
*/
TCA_FLOWER_KEY_ENC_OPTS_VXLAN, /* Nested
* TCA_FLOWER_KEY_ENC_OPT_VXLAN_
* attributes
*/
__TCA_FLOWER_KEY_ENC_OPTS_MAX,
};
@ -588,6 +592,15 @@ enum {
#define TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX \
(__TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX - 1)
enum {
TCA_FLOWER_KEY_ENC_OPT_VXLAN_UNSPEC,
TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, /* u32 */
__TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX,
};
#define TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX \
(__TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX - 1)
enum {
TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT = (1 << 0),
TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST = (1 << 1),