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authorAriel Levkovich <lariel@mellanox.com>2020-07-23 00:03:01 +0200
committerDavid S. Miller <davem@davemloft.net>2020-07-25 00:23:31 +0200
commit5923b8f7fa218a9bccd730c0a9692635eb2fc740 (patch)
tree6031e384f304d24f1eed7f4b5b7be6764ce910d9 /net/sched
parentnet/flow_dissector: add packet hash dissection (diff)
downloadlinux-5923b8f7fa218a9bccd730c0a9692635eb2fc740.tar.xz
linux-5923b8f7fa218a9bccd730c0a9692635eb2fc740.zip
net/sched: cls_flower: Add hash info to flow classification
Adding new cls flower keys for hash value and hash mask and dissect the hash info from the skb into the flow key towards flow classication. Signed-off-by: Ariel Levkovich <lariel@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/cls_flower.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index acd8e05c2ba5..a4f7ef1de7e7 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -64,6 +64,7 @@ struct fl_flow_key {
};
} tp_range;
struct flow_dissector_key_ct ct;
+ struct flow_dissector_key_hash hash;
} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
struct fl_flow_mask_range {
@@ -318,6 +319,7 @@ static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
fl_ct_info_to_flower_map,
ARRAY_SIZE(fl_ct_info_to_flower_map));
+ skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
f = fl_mask_lookup(mask, &skb_key);
@@ -695,6 +697,9 @@ static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
[TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
.len = 128 / BITS_PER_BYTE },
[TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
+ [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
+ [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
+
};
static const struct nla_policy
@@ -1626,6 +1631,10 @@ static int fl_set_key(struct net *net, struct nlattr **tb,
fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
+ fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
+ &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
+ sizeof(key->hash.hash));
+
if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
ret = fl_set_enc_opt(tb, key, mask, extack);
if (ret)
@@ -1740,6 +1749,8 @@ static void fl_init_dissector(struct flow_dissector *dissector,
FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
FL_KEY_SET_IF_MASKED(mask, keys, cnt,
FLOW_DISSECTOR_KEY_CT, ct);
+ FL_KEY_SET_IF_MASKED(mask, keys, cnt,
+ FLOW_DISSECTOR_KEY_HASH, hash);
skb_flow_dissector_init(dissector, keys, cnt);
}
@@ -2960,6 +2971,11 @@ static int fl_dump_key(struct sk_buff *skb, struct net *net,
if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
goto nla_put_failure;
+ if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
+ &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
+ sizeof(key->hash.hash)))
+ goto nla_put_failure;
+
return 0;
nla_put_failure: