2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
3 * Copyright (c) 2013 Simon Horman
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include "odp-execute.h"
20 #include <linux/openvswitch.h>
30 #include "unaligned.h"
34 odp_eth_set_addrs(struct ofpbuf *packet,
35 const struct ovs_key_ethernet *eth_key)
37 struct eth_header *eh = ofpbuf_l2(packet);
40 memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src);
41 memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst);
46 odp_set_tunnel_action(const struct nlattr *a, struct flow_tnl *tun_key)
48 enum odp_key_fitness fitness;
50 fitness = odp_tun_key_from_attr(a, tun_key);
51 ovs_assert(fitness != ODP_FIT_ERROR);
55 set_arp(struct ofpbuf *packet, const struct ovs_key_arp *arp_key)
57 struct arp_eth_header *arp = ofpbuf_l3(packet);
59 arp->ar_op = arp_key->arp_op;
60 memcpy(arp->ar_sha, arp_key->arp_sha, ETH_ADDR_LEN);
61 put_16aligned_be32(&arp->ar_spa, arp_key->arp_sip);
62 memcpy(arp->ar_tha, arp_key->arp_tha, ETH_ADDR_LEN);
63 put_16aligned_be32(&arp->ar_tpa, arp_key->arp_tip);
67 odp_execute_set_action(struct ofpbuf *packet, const struct nlattr *a,
68 struct pkt_metadata *md)
70 enum ovs_key_attr type = nl_attr_type(a);
71 const struct ovs_key_ipv4 *ipv4_key;
72 const struct ovs_key_ipv6 *ipv6_key;
73 const struct ovs_key_tcp *tcp_key;
74 const struct ovs_key_udp *udp_key;
75 const struct ovs_key_sctp *sctp_key;
78 case OVS_KEY_ATTR_PRIORITY:
79 md->skb_priority = nl_attr_get_u32(a);
82 case OVS_KEY_ATTR_TUNNEL:
83 odp_set_tunnel_action(a, &md->tunnel);
86 case OVS_KEY_ATTR_SKB_MARK:
87 md->pkt_mark = nl_attr_get_u32(a);
90 case OVS_KEY_ATTR_ETHERNET:
91 odp_eth_set_addrs(packet,
92 nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet)));
95 case OVS_KEY_ATTR_IPV4:
96 ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4));
97 packet_set_ipv4(packet, ipv4_key->ipv4_src, ipv4_key->ipv4_dst,
98 ipv4_key->ipv4_tos, ipv4_key->ipv4_ttl);
101 case OVS_KEY_ATTR_IPV6:
102 ipv6_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv6));
103 packet_set_ipv6(packet, ipv6_key->ipv6_proto, ipv6_key->ipv6_src,
104 ipv6_key->ipv6_dst, ipv6_key->ipv6_tclass,
105 ipv6_key->ipv6_label, ipv6_key->ipv6_hlimit);
108 case OVS_KEY_ATTR_TCP:
109 tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp));
110 packet_set_tcp_port(packet, tcp_key->tcp_src, tcp_key->tcp_dst);
113 case OVS_KEY_ATTR_UDP:
114 udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp));
115 packet_set_udp_port(packet, udp_key->udp_src, udp_key->udp_dst);
118 case OVS_KEY_ATTR_SCTP:
119 sctp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_sctp));
120 packet_set_sctp_port(packet, sctp_key->sctp_src, sctp_key->sctp_dst);
123 case OVS_KEY_ATTR_MPLS:
124 set_mpls_lse(packet, nl_attr_get_be32(a));
127 case OVS_KEY_ATTR_ARP:
128 set_arp(packet, nl_attr_get_unspec(a, sizeof(struct ovs_key_arp)));
131 case OVS_KEY_ATTR_DP_HASH:
132 md->dp_hash = nl_attr_get_u32(a);
135 case OVS_KEY_ATTR_RECIRC_ID:
136 md->recirc_id = nl_attr_get_u32(a);
139 case OVS_KEY_ATTR_UNSPEC:
140 case OVS_KEY_ATTR_ENCAP:
141 case OVS_KEY_ATTR_ETHERTYPE:
142 case OVS_KEY_ATTR_IN_PORT:
143 case OVS_KEY_ATTR_VLAN:
144 case OVS_KEY_ATTR_ICMP:
145 case OVS_KEY_ATTR_ICMPV6:
146 case OVS_KEY_ATTR_ND:
147 case OVS_KEY_ATTR_TCP_FLAGS:
148 case __OVS_KEY_ATTR_MAX:
155 odp_execute_actions__(void *dp, struct ofpbuf *packet, bool steal,
156 struct pkt_metadata *,
157 const struct nlattr *actions, size_t actions_len,
158 odp_execute_cb dp_execute_action, bool more_actions);
161 odp_execute_sample(void *dp, struct ofpbuf *packet, bool steal,
162 struct pkt_metadata *md, const struct nlattr *action,
163 odp_execute_cb dp_execute_action, bool more_actions)
165 const struct nlattr *subactions = NULL;
166 const struct nlattr *a;
169 NL_NESTED_FOR_EACH_UNSAFE (a, left, action) {
170 int type = nl_attr_type(a);
172 switch ((enum ovs_sample_attr) type) {
173 case OVS_SAMPLE_ATTR_PROBABILITY:
174 if (random_uint32() >= nl_attr_get_u32(a)) {
179 case OVS_SAMPLE_ATTR_ACTIONS:
183 case OVS_SAMPLE_ATTR_UNSPEC:
184 case __OVS_SAMPLE_ATTR_MAX:
190 odp_execute_actions__(dp, packet, steal, md, nl_attr_get(subactions),
191 nl_attr_get_size(subactions), dp_execute_action,
196 odp_execute_actions__(void *dp, struct ofpbuf *packet, bool steal,
197 struct pkt_metadata *md,
198 const struct nlattr *actions, size_t actions_len,
199 odp_execute_cb dp_execute_action, bool more_actions)
201 const struct nlattr *a;
204 NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) {
205 int type = nl_attr_type(a);
207 switch ((enum ovs_action_attr) type) {
208 /* These only make sense in the context of a datapath. */
209 case OVS_ACTION_ATTR_OUTPUT:
210 case OVS_ACTION_ATTR_USERSPACE:
211 case OVS_ACTION_ATTR_RECIRC:
212 if (dp_execute_action) {
213 /* Allow 'dp_execute_action' to steal the packet data if we do
214 * not need it any more. */
215 bool may_steal = steal && (!more_actions
216 && left <= NLA_ALIGN(a->nla_len)
217 && type != OVS_ACTION_ATTR_RECIRC);
218 dp_execute_action(dp, packet, md, a, may_steal);
222 case OVS_ACTION_ATTR_HASH: {
223 const struct ovs_action_hash *hash_act = nl_attr_get(a);
225 /* Calculate a hash value directly. This might not match the
226 * value computed by the datapath, but it is much less expensive,
227 * and the current use case (bonding) does not require a strict
228 * match to work properly. */
229 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
233 flow_extract(packet, md, &flow);
234 hash = flow_hash_5tuple(&flow, hash_act->hash_basis);
235 md->dp_hash = hash ? hash : 1;
237 /* Assert on unknown hash algorithm. */
243 case OVS_ACTION_ATTR_PUSH_VLAN: {
244 const struct ovs_action_push_vlan *vlan = nl_attr_get(a);
245 eth_push_vlan(packet, htons(ETH_TYPE_VLAN), vlan->vlan_tci);
249 case OVS_ACTION_ATTR_POP_VLAN:
250 eth_pop_vlan(packet);
253 case OVS_ACTION_ATTR_PUSH_MPLS: {
254 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
255 push_mpls(packet, mpls->mpls_ethertype, mpls->mpls_lse);
259 case OVS_ACTION_ATTR_POP_MPLS:
260 pop_mpls(packet, nl_attr_get_be16(a));
263 case OVS_ACTION_ATTR_SET:
264 odp_execute_set_action(packet, nl_attr_get(a), md);
267 case OVS_ACTION_ATTR_SAMPLE:
268 odp_execute_sample(dp, packet, steal, md, a, dp_execute_action,
269 more_actions || left > NLA_ALIGN(a->nla_len));
272 case OVS_ACTION_ATTR_UNSPEC:
273 case __OVS_ACTION_ATTR_MAX:
280 odp_execute_actions(void *dp, struct ofpbuf *packet, bool steal,
281 struct pkt_metadata *md,
282 const struct nlattr *actions, size_t actions_len,
283 odp_execute_cb dp_execute_action)
285 odp_execute_actions__(dp, packet, steal, md, actions, actions_len,
286 dp_execute_action, false);
288 if (!actions_len && steal) {
290 ofpbuf_delete(packet);