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>
28 #include "packet-dpif.h"
31 #include "unaligned.h"
35 odp_eth_set_addrs(struct ofpbuf *packet,
36 const struct ovs_key_ethernet *eth_key)
38 struct eth_header *eh = ofpbuf_l2(packet);
41 memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src);
42 memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst);
47 odp_set_tunnel_action(const struct nlattr *a, struct flow_tnl *tun_key)
49 enum odp_key_fitness fitness;
51 fitness = odp_tun_key_from_attr(a, tun_key);
52 ovs_assert(fitness != ODP_FIT_ERROR);
56 set_arp(struct ofpbuf *packet, const struct ovs_key_arp *arp_key)
58 struct arp_eth_header *arp = ofpbuf_l3(packet);
60 arp->ar_op = arp_key->arp_op;
61 memcpy(arp->ar_sha, arp_key->arp_sha, ETH_ADDR_LEN);
62 put_16aligned_be32(&arp->ar_spa, arp_key->arp_sip);
63 memcpy(arp->ar_tha, arp_key->arp_tha, ETH_ADDR_LEN);
64 put_16aligned_be32(&arp->ar_tpa, arp_key->arp_tip);
68 odp_execute_set_action(struct dpif_packet *packet, const struct nlattr *a,
69 struct pkt_metadata *md)
71 enum ovs_key_attr type = nl_attr_type(a);
72 const struct ovs_key_ipv4 *ipv4_key;
73 const struct ovs_key_ipv6 *ipv6_key;
74 const struct ovs_key_tcp *tcp_key;
75 const struct ovs_key_udp *udp_key;
76 const struct ovs_key_sctp *sctp_key;
79 case OVS_KEY_ATTR_PRIORITY:
80 md->skb_priority = nl_attr_get_u32(a);
83 case OVS_KEY_ATTR_TUNNEL:
84 odp_set_tunnel_action(a, &md->tunnel);
87 case OVS_KEY_ATTR_SKB_MARK:
88 md->pkt_mark = nl_attr_get_u32(a);
91 case OVS_KEY_ATTR_ETHERNET:
92 odp_eth_set_addrs(&packet->ofpbuf,
93 nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet)));
96 case OVS_KEY_ATTR_IPV4:
97 ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4));
98 packet_set_ipv4(&packet->ofpbuf, ipv4_key->ipv4_src,
99 ipv4_key->ipv4_dst, ipv4_key->ipv4_tos,
103 case OVS_KEY_ATTR_IPV6:
104 ipv6_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv6));
105 packet_set_ipv6(&packet->ofpbuf, ipv6_key->ipv6_proto,
106 ipv6_key->ipv6_src, ipv6_key->ipv6_dst,
107 ipv6_key->ipv6_tclass, ipv6_key->ipv6_label,
108 ipv6_key->ipv6_hlimit);
111 case OVS_KEY_ATTR_TCP:
112 tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp));
113 packet_set_tcp_port(&packet->ofpbuf, tcp_key->tcp_src,
117 case OVS_KEY_ATTR_UDP:
118 udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp));
119 packet_set_udp_port(&packet->ofpbuf, udp_key->udp_src,
123 case OVS_KEY_ATTR_SCTP:
124 sctp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_sctp));
125 packet_set_sctp_port(&packet->ofpbuf, sctp_key->sctp_src,
129 case OVS_KEY_ATTR_MPLS:
130 set_mpls_lse(&packet->ofpbuf, nl_attr_get_be32(a));
133 case OVS_KEY_ATTR_ARP:
134 set_arp(&packet->ofpbuf,
135 nl_attr_get_unspec(a, sizeof(struct ovs_key_arp)));
138 case OVS_KEY_ATTR_DP_HASH:
139 md->dp_hash = nl_attr_get_u32(a);
142 case OVS_KEY_ATTR_RECIRC_ID:
143 md->recirc_id = nl_attr_get_u32(a);
146 case OVS_KEY_ATTR_UNSPEC:
147 case OVS_KEY_ATTR_ENCAP:
148 case OVS_KEY_ATTR_ETHERTYPE:
149 case OVS_KEY_ATTR_IN_PORT:
150 case OVS_KEY_ATTR_VLAN:
151 case OVS_KEY_ATTR_ICMP:
152 case OVS_KEY_ATTR_ICMPV6:
153 case OVS_KEY_ATTR_ND:
154 case OVS_KEY_ATTR_TCP_FLAGS:
155 case __OVS_KEY_ATTR_MAX:
162 odp_execute_actions__(void *dp, struct dpif_packet *packet, bool steal,
163 struct pkt_metadata *,
164 const struct nlattr *actions, size_t actions_len,
165 odp_execute_cb dp_execute_action, bool more_actions);
168 odp_execute_sample(void *dp, struct dpif_packet *packet, bool steal,
169 struct pkt_metadata *md, const struct nlattr *action,
170 odp_execute_cb dp_execute_action, bool more_actions)
172 const struct nlattr *subactions = NULL;
173 const struct nlattr *a;
176 NL_NESTED_FOR_EACH_UNSAFE (a, left, action) {
177 int type = nl_attr_type(a);
179 switch ((enum ovs_sample_attr) type) {
180 case OVS_SAMPLE_ATTR_PROBABILITY:
181 if (random_uint32() >= nl_attr_get_u32(a)) {
186 case OVS_SAMPLE_ATTR_ACTIONS:
190 case OVS_SAMPLE_ATTR_UNSPEC:
191 case __OVS_SAMPLE_ATTR_MAX:
197 odp_execute_actions__(dp, packet, steal, md, nl_attr_get(subactions),
198 nl_attr_get_size(subactions), dp_execute_action,
203 odp_execute_actions__(void *dp, struct dpif_packet *packet, bool steal,
204 struct pkt_metadata *md,
205 const struct nlattr *actions, size_t actions_len,
206 odp_execute_cb dp_execute_action, bool more_actions)
208 const struct nlattr *a;
211 NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) {
212 int type = nl_attr_type(a);
214 switch ((enum ovs_action_attr) type) {
215 /* These only make sense in the context of a datapath. */
216 case OVS_ACTION_ATTR_OUTPUT:
217 case OVS_ACTION_ATTR_USERSPACE:
218 case OVS_ACTION_ATTR_RECIRC:
219 if (dp_execute_action) {
220 /* Allow 'dp_execute_action' to steal the packet data if we do
221 * not need it any more. */
222 bool may_steal = steal && (!more_actions
223 && left <= NLA_ALIGN(a->nla_len)
224 && type != OVS_ACTION_ATTR_RECIRC);
225 dp_execute_action(dp, packet, md, a, may_steal);
229 case OVS_ACTION_ATTR_HASH: {
230 const struct ovs_action_hash *hash_act = nl_attr_get(a);
232 /* Calculate a hash value directly. This might not match the
233 * value computed by the datapath, but it is much less expensive,
234 * and the current use case (bonding) does not require a strict
235 * match to work properly. */
236 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
240 flow_extract(&packet->ofpbuf, md, &flow);
241 hash = flow_hash_5tuple(&flow, hash_act->hash_basis);
242 md->dp_hash = hash ? hash : 1;
244 /* Assert on unknown hash algorithm. */
250 case OVS_ACTION_ATTR_PUSH_VLAN: {
251 const struct ovs_action_push_vlan *vlan = nl_attr_get(a);
252 eth_push_vlan(&packet->ofpbuf,
253 htons(ETH_TYPE_VLAN), vlan->vlan_tci);
257 case OVS_ACTION_ATTR_POP_VLAN:
258 eth_pop_vlan(&packet->ofpbuf);
261 case OVS_ACTION_ATTR_PUSH_MPLS: {
262 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
263 push_mpls(&packet->ofpbuf,
264 mpls->mpls_ethertype, mpls->mpls_lse);
268 case OVS_ACTION_ATTR_POP_MPLS:
269 pop_mpls(&packet->ofpbuf, nl_attr_get_be16(a));
272 case OVS_ACTION_ATTR_SET:
273 odp_execute_set_action(packet, nl_attr_get(a), md);
276 case OVS_ACTION_ATTR_SAMPLE:
277 odp_execute_sample(dp, packet, steal, md, a, dp_execute_action,
278 more_actions || left > NLA_ALIGN(a->nla_len));
281 case OVS_ACTION_ATTR_UNSPEC:
282 case __OVS_ACTION_ATTR_MAX:
289 odp_execute_actions(void *dp, struct dpif_packet *packet, bool steal,
290 struct pkt_metadata *md,
291 const struct nlattr *actions, size_t actions_len,
292 odp_execute_cb dp_execute_action)
294 odp_execute_actions__(dp, packet, steal, md, actions, actions_len,
295 dp_execute_action, false);
297 if (!actions_len && steal) {
299 dpif_packet_delete(packet);