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net/sched: cls_flower: Add UDP port to tunnel parameters

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The current IP tunneling classification supports only IP addresses and key.
Enhance UDP based IP tunneling classification parameters by adding UDP
src and dst port.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2016-11-07 15:14:39 +02:00 committed by David S. Miller
parent 519d10521c
commit f4d997fd61
3 changed files with 34 additions and 1 deletions
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1
include/net/flow_dissector.h
View File

@ -132,6 +132,7 @@ enum flow_dissector_key_id {
FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, /* struct flow_dissector_key_ipv4_addrs */
FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, /* struct flow_dissector_key_ipv6_addrs */
FLOW_DISSECTOR_KEY_ENC_CONTROL, /* struct flow_dissector_key_control */
FLOW_DISSECTOR_KEY_ENC_PORTS, /* struct flow_dissector_key_ports */
FLOW_DISSECTOR_KEY_MAX,
};

5
include/uapi/linux/pkt_cls.h
View File

@ -452,6 +452,11 @@ enum {
TCA_FLOWER_KEY_SCTP_SRC, /* be16 */
TCA_FLOWER_KEY_SCTP_DST, /* be16 */
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, /* be16 */
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK, /* be16 */
TCA_FLOWER_KEY_ENC_UDP_DST_PORT, /* be16 */
TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK, /* be16 */
__TCA_FLOWER_MAX,
};

29
net/sched/cls_flower.c
View File

@ -43,6 +43,7 @@ struct fl_flow_key {
struct flow_dissector_key_ipv4_addrs enc_ipv4;
struct flow_dissector_key_ipv6_addrs enc_ipv6;
};
struct flow_dissector_key_ports enc_tp;
} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
struct fl_flow_mask_range {
@ -155,6 +156,8 @@ static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
}
skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id);
skb_key.enc_tp.src = key->tp_src;
skb_key.enc_tp.dst = key->tp_dst;
}
skb_key.indev_ifindex = skb->skb_iif;
@ -348,6 +351,10 @@ static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
[TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
[TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
};
static void fl_set_key_val(struct nlattr **tb,
@ -500,6 +507,14 @@ static int fl_set_key(struct net *net, struct nlattr **tb,
&mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
sizeof(key->enc_key_id.keyid));
fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
&mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
sizeof(key->enc_tp.src));
fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
&mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
sizeof(key->enc_tp.dst));
return 0;
}
@ -577,6 +592,8 @@ static void fl_init_dissector(struct cls_fl_head *head,
FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
enc_control);
FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
skb_flow_dissector_init(&head->dissector, keys, cnt);
}
@ -951,7 +968,17 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
&mask->enc_key_id, TCA_FLOWER_UNSPEC,
sizeof(key->enc_key_id)))
sizeof(key->enc_key_id)) ||
fl_dump_key_val(skb, &key->enc_tp.src,
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
&mask->enc_tp.src,
TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
sizeof(key->enc_tp.src)) ||
fl_dump_key_val(skb, &key->enc_tp.dst,
TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
&mask->enc_tp.dst,
TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
sizeof(key->enc_tp.dst)))
goto nla_put_failure;
nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);