diff options
| -rw-r--r-- | include/linux/skbuff.h | 4 | ||||
| -rw-r--r-- | include/net/flow_dissector.h | 9 | ||||
| -rw-r--r-- | include/uapi/linux/pkt_cls.h | 3 | ||||
| -rw-r--r-- | net/core/flow_dissector.c | 17 | ||||
| -rw-r--r-- | net/sched/cls_flower.c | 16 |
5 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6a82d4a8229e..fa817a105517 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1342,6 +1342,10 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb, struct flow_dissector *flow_dissector, void *target_container); +void skb_flow_dissect_hash(const struct sk_buff *skb, + struct flow_dissector *flow_dissector, + void *target_container); + static inline __u32 skb_get_hash(struct sk_buff *skb) { if (!skb->l4_hash && !skb->sw_hash) diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h index 4b6e36288ddd..cc10b10dc3a1 100644 --- a/include/net/flow_dissector.h +++ b/include/net/flow_dissector.h @@ -243,6 +243,14 @@ struct flow_dissector_key_ct { u32 ct_labels[4]; }; +/** + * struct flow_dissector_key_hash: + * @hash: hash value + */ +struct flow_dissector_key_hash { + u32 hash; +}; + enum flow_dissector_key_id { FLOW_DISSECTOR_KEY_CONTROL, /* struct flow_dissector_key_control */ FLOW_DISSECTOR_KEY_BASIC, /* struct flow_dissector_key_basic */ @@ -271,6 +279,7 @@ enum flow_dissector_key_id { FLOW_DISSECTOR_KEY_ENC_OPTS, /* struct flow_dissector_key_enc_opts */ FLOW_DISSECTOR_KEY_META, /* struct flow_dissector_key_meta */ FLOW_DISSECTOR_KEY_CT, /* struct flow_dissector_key_ct */ + FLOW_DISSECTOR_KEY_HASH, /* struct flow_dissector_key_hash */ FLOW_DISSECTOR_KEY_MAX, }; diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h index 7576209d96f9..ee95f42fb0ec 100644 --- a/include/uapi/linux/pkt_cls.h +++ b/include/uapi/linux/pkt_cls.h @@ -578,6 +578,9 @@ enum { TCA_FLOWER_KEY_MPLS_OPTS, + TCA_FLOWER_KEY_HASH, /* u32 */ + TCA_FLOWER_KEY_HASH_MASK, /* u32 */ + __TCA_FLOWER_MAX, }; diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 142a8824f0a8..29806eb765cf 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -383,6 +383,23 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb, } EXPORT_SYMBOL(skb_flow_dissect_tunnel_info); +void skb_flow_dissect_hash(const struct sk_buff *skb, + struct flow_dissector *flow_dissector, + void *target_container) +{ + struct flow_dissector_key_hash *key; + + if (!dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_HASH)) + return; + + key = skb_flow_dissector_target(flow_dissector, + FLOW_DISSECTOR_KEY_HASH, + target_container); + + key->hash = skb_get_hash_raw(skb); +} +EXPORT_SYMBOL(skb_flow_dissect_hash); + static enum flow_dissect_ret __skb_flow_dissect_mpls(const struct sk_buff *skb, struct flow_dissector *flow_dissector, 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: |