net/sched: flower: Add number of vlan tags filter

These are bookkeeping parts of the new num_of_vlans filter.
Defines, dump, load and set are being done here.

Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
index 404f97f..9a2ee1e 100644 (file)
--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -587,6 +587,8 @@ enum {
        TCA_FLOWER_KEY_HASH,            /* u32 */
        TCA_FLOWER_KEY_HASH_MASK,       /* u32 */
 
+       TCA_FLOWER_KEY_NUM_OF_VLANS,    /* u8 */
+
        __TCA_FLOWER_MAX,
 };
 

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 86fd042..4ec4d74 100644 (file)
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -72,6 +72,7 @@ struct fl_flow_key {
        } tp_range;
        struct flow_dissector_key_ct ct;
        struct flow_dissector_key_hash hash;
+       struct flow_dissector_key_num_of_vlans num_of_vlans;
 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
 
 struct fl_flow_mask_range {
@@ -712,6 +713,7 @@ static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
        [TCA_FLOWER_FLAGS]              = { .type = NLA_U32 },
        [TCA_FLOWER_KEY_HASH]           = { .type = NLA_U32 },
        [TCA_FLOWER_KEY_HASH_MASK]      = { .type = NLA_U32 },
+       [TCA_FLOWER_KEY_NUM_OF_VLANS]   = { .type = NLA_U8 },
 
 };
 
@@ -1615,6 +1617,11 @@ static int fl_set_key(struct net *net, struct nlattr **tb,
        fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
                       mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
                       sizeof(key->eth.src));
+       fl_set_key_val(tb, &key->num_of_vlans,
+                      TCA_FLOWER_KEY_NUM_OF_VLANS,
+                      &mask->num_of_vlans,
+                      TCA_FLOWER_UNSPEC,
+                      sizeof(key->num_of_vlans));
 
        if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], &ethertype, key, mask)) {
                fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
@@ -1906,6 +1913,8 @@ static void fl_init_dissector(struct flow_dissector *dissector,
                             FLOW_DISSECTOR_KEY_CT, ct);
        FL_KEY_SET_IF_MASKED(mask, keys, cnt,
                             FLOW_DISSECTOR_KEY_HASH, hash);
+       FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+                            FLOW_DISSECTOR_KEY_NUM_OF_VLANS, num_of_vlans);
 
        skb_flow_dissector_init(dissector, keys, cnt);
 }
@@ -2994,6 +3003,11 @@ static int fl_dump_key(struct sk_buff *skb, struct net *net,
                            sizeof(key->basic.n_proto)))
                goto nla_put_failure;
 
+       if (mask->num_of_vlans.num_of_vlans) {
+               if (nla_put_u8(skb, TCA_FLOWER_KEY_NUM_OF_VLANS, key->num_of_vlans.num_of_vlans))
+                       goto nla_put_failure;
+       }
+
        if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
                goto nla_put_failure;