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>
29 #include "unaligned.h"
33 odp_eth_set_addrs(struct ofpbuf *packet,
34 const struct ovs_key_ethernet *eth_key)
36 struct eth_header *eh = ofpbuf_l2(packet);
39 memcpy(eh->eth_src, eth_key->eth_src, sizeof eh->eth_src);
40 memcpy(eh->eth_dst, eth_key->eth_dst, sizeof eh->eth_dst);
45 odp_set_tunnel_action(const struct nlattr *a, struct flow_tnl *tun_key)
47 enum odp_key_fitness fitness;
49 fitness = odp_tun_key_from_attr(a, tun_key);
50 ovs_assert(fitness != ODP_FIT_ERROR);
54 set_arp(struct ofpbuf *packet, const struct ovs_key_arp *arp_key)
56 struct arp_eth_header *arp = ofpbuf_l3(packet);
58 arp->ar_op = arp_key->arp_op;
59 memcpy(arp->ar_sha, arp_key->arp_sha, ETH_ADDR_LEN);
60 put_16aligned_be32(&arp->ar_spa, arp_key->arp_sip);
61 memcpy(arp->ar_tha, arp_key->arp_tha, ETH_ADDR_LEN);
62 put_16aligned_be32(&arp->ar_tpa, arp_key->arp_tip);
66 odp_execute_set_action(struct ofpbuf *packet, const struct nlattr *a,
67 struct pkt_metadata *md)
69 enum ovs_key_attr type = nl_attr_type(a);
70 const struct ovs_key_ipv4 *ipv4_key;
71 const struct ovs_key_ipv6 *ipv6_key;
72 const struct ovs_key_tcp *tcp_key;
73 const struct ovs_key_udp *udp_key;
74 const struct ovs_key_sctp *sctp_key;
77 case OVS_KEY_ATTR_PRIORITY:
78 md->skb_priority = nl_attr_get_u32(a);
81 case OVS_KEY_ATTR_TUNNEL:
82 odp_set_tunnel_action(a, &md->tunnel);
85 case OVS_KEY_ATTR_SKB_MARK:
86 md->pkt_mark = nl_attr_get_u32(a);
89 case OVS_KEY_ATTR_ETHERNET:
90 odp_eth_set_addrs(packet,
91 nl_attr_get_unspec(a, sizeof(struct ovs_key_ethernet)));
94 case OVS_KEY_ATTR_IPV4:
95 ipv4_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv4));
96 packet_set_ipv4(packet, ipv4_key->ipv4_src, ipv4_key->ipv4_dst,
97 ipv4_key->ipv4_tos, ipv4_key->ipv4_ttl);
100 case OVS_KEY_ATTR_IPV6:
101 ipv6_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_ipv6));
102 packet_set_ipv6(packet, ipv6_key->ipv6_proto, ipv6_key->ipv6_src,
103 ipv6_key->ipv6_dst, ipv6_key->ipv6_tclass,
104 ipv6_key->ipv6_label, ipv6_key->ipv6_hlimit);
107 case OVS_KEY_ATTR_TCP:
108 tcp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_tcp));
109 packet_set_tcp_port(packet, tcp_key->tcp_src, tcp_key->tcp_dst);
112 case OVS_KEY_ATTR_UDP:
113 udp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_udp));
114 packet_set_udp_port(packet, udp_key->udp_src, udp_key->udp_dst);
117 case OVS_KEY_ATTR_SCTP:
118 sctp_key = nl_attr_get_unspec(a, sizeof(struct ovs_key_sctp));
119 packet_set_sctp_port(packet, sctp_key->sctp_src, sctp_key->sctp_dst);
122 case OVS_KEY_ATTR_MPLS:
123 set_mpls_lse(packet, nl_attr_get_be32(a));
126 case OVS_KEY_ATTR_ARP:
127 set_arp(packet, nl_attr_get_unspec(a, sizeof(struct ovs_key_arp)));
130 case OVS_KEY_ATTR_DP_HASH:
131 md->dp_hash = nl_attr_get_u32(a);
134 case OVS_KEY_ATTR_RECIRC_ID:
135 md->recirc_id = nl_attr_get_u32(a);
138 case OVS_KEY_ATTR_UNSPEC:
139 case OVS_KEY_ATTR_ENCAP:
140 case OVS_KEY_ATTR_ETHERTYPE:
141 case OVS_KEY_ATTR_IN_PORT:
142 case OVS_KEY_ATTR_VLAN:
143 case OVS_KEY_ATTR_ICMP:
144 case OVS_KEY_ATTR_ICMPV6:
145 case OVS_KEY_ATTR_ND:
146 case OVS_KEY_ATTR_TCP_FLAGS:
147 case __OVS_KEY_ATTR_MAX:
154 odp_execute_actions__(void *dp, struct ofpbuf *packet, bool steal,
155 struct pkt_metadata *,
156 const struct nlattr *actions, size_t actions_len,
157 odp_execute_cb dp_execute_action, bool more_actions);
160 odp_execute_sample(void *dp, struct ofpbuf *packet, bool steal,
161 struct pkt_metadata *md, const struct nlattr *action,
162 odp_execute_cb dp_execute_action, bool more_actions)
164 const struct nlattr *subactions = NULL;
165 const struct nlattr *a;
168 NL_NESTED_FOR_EACH_UNSAFE (a, left, action) {
169 int type = nl_attr_type(a);
171 switch ((enum ovs_sample_attr) type) {
172 case OVS_SAMPLE_ATTR_PROBABILITY:
173 if (random_uint32() >= nl_attr_get_u32(a)) {
178 case OVS_SAMPLE_ATTR_ACTIONS:
182 case OVS_SAMPLE_ATTR_UNSPEC:
183 case __OVS_SAMPLE_ATTR_MAX:
189 odp_execute_actions__(dp, packet, steal, md, nl_attr_get(subactions),
190 nl_attr_get_size(subactions), dp_execute_action,
195 odp_execute_actions__(void *dp, struct ofpbuf *packet, bool steal,
196 struct pkt_metadata *md,
197 const struct nlattr *actions, size_t actions_len,
198 odp_execute_cb dp_execute_action, bool more_actions)
200 const struct nlattr *a;
203 NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) {
204 int type = nl_attr_type(a);
206 switch ((enum ovs_action_attr) type) {
207 /* These only make sense in the context of a datapath. */
208 case OVS_ACTION_ATTR_OUTPUT:
209 case OVS_ACTION_ATTR_USERSPACE:
210 case OVS_ACTION_ATTR_RECIRC:
211 if (dp_execute_action) {
212 /* Allow 'dp_execute_action' to steal the packet data if we do
213 * not need it any more. */
214 bool may_steal = steal && (!more_actions
215 && left <= NLA_ALIGN(a->nla_len)
216 && type != OVS_ACTION_ATTR_RECIRC);
217 dp_execute_action(dp, packet, md, a, may_steal);
221 case OVS_ACTION_ATTR_PUSH_VLAN: {
222 const struct ovs_action_push_vlan *vlan = nl_attr_get(a);
223 eth_push_vlan(packet, htons(ETH_TYPE_VLAN), vlan->vlan_tci);
227 case OVS_ACTION_ATTR_POP_VLAN:
228 eth_pop_vlan(packet);
231 case OVS_ACTION_ATTR_PUSH_MPLS: {
232 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
233 push_mpls(packet, mpls->mpls_ethertype, mpls->mpls_lse);
237 case OVS_ACTION_ATTR_POP_MPLS:
238 pop_mpls(packet, nl_attr_get_be16(a));
241 case OVS_ACTION_ATTR_SET:
242 odp_execute_set_action(packet, nl_attr_get(a), md);
245 case OVS_ACTION_ATTR_SAMPLE:
246 odp_execute_sample(dp, packet, steal, md, a, dp_execute_action,
247 more_actions || left > NLA_ALIGN(a->nla_len));
250 case OVS_ACTION_ATTR_UNSPEC:
251 case __OVS_ACTION_ATTR_MAX:
258 odp_execute_actions(void *dp, struct ofpbuf *packet, bool steal,
259 struct pkt_metadata *md,
260 const struct nlattr *actions, size_t actions_len,
261 odp_execute_cb dp_execute_action)
263 odp_execute_actions__(dp, packet, steal, md, actions, actions_len,
264 dp_execute_action, false);
266 if (!actions_len && steal) {
268 ofpbuf_delete(packet);