2 * Copyright (c) 2009, 2010, 2011 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
24 #include <linux/openvswitch.h>
26 #include "openflow/openflow.h"
34 #define OVSP_NONE ((uint16_t) -1)
36 static inline uint16_t
37 ofp_port_to_odp_port(uint16_t ofp_port)
49 static inline uint16_t
50 odp_port_to_ofp_port(uint16_t odp_port)
61 void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
64 /* Upper bound on the length of a nlattr-formatted flow key. The longest
65 * nlattr-formatted flow key would be:
67 * struct pad nl hdr total
68 * ------ --- ------ -----
69 * OVS_KEY_ATTR_TUN_ID 8 -- 4 12
70 * OVS_KEY_ATTR_IN_PORT 4 -- 4 8
71 * OVS_KEY_ATTR_ETHERNET 12 -- 4 16
72 * OVS_KEY_ATTR_8021Q 4 -- 4 8
73 * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8
74 * OVS_KEY_ATTR_IPV6 34 2 4 40
75 * OVS_KEY_ATTR_ICMPV6 2 2 4 8
76 * OVS_KEY_ATTR_ND 28 -- 4 32
77 * -------------------------------------------------
80 #define ODPUTIL_FLOW_KEY_BYTES 132
82 /* This is an imperfect sanity-check that ODPUTIL_FLOW_KEY_BYTES doesn't
83 * need to be updated, but will at least raise awareness when new OVS
84 * datapath key types are added. */
85 BUILD_ASSERT_DECL(__OVS_KEY_ATTR_MAX == 14);
87 /* A buffer with sufficient size and alignment to hold an nlattr-formatted flow
88 * key. An array of "struct nlattr" might not, in theory, be sufficiently
89 * aligned because it only contains 16-bit types. */
90 struct odputil_keybuf {
91 uint32_t keybuf[DIV_ROUND_UP(ODPUTIL_FLOW_KEY_BYTES, 4)];
94 void odp_flow_key_format(const struct nlattr *, size_t, struct ds *);
95 int odp_flow_key_from_string(const char *s, struct ofpbuf *);
97 void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *);
98 int odp_flow_key_to_flow(const struct nlattr *, size_t, struct flow *);
100 enum user_action_cookie_type {
101 USER_ACTION_COOKIE_UNSPEC,
102 USER_ACTION_COOKIE_CONTROLLER, /* Packet for controller. */
103 USER_ACTION_COOKIE_SFLOW, /* Packet for sFlow sampling. */
106 /* user_action_cookie is passed as argument to OVS_ACTION_ATTR_USERSPACE.
107 * Since is it passed to kernel as u64, its size has to be 8 bytes. */
108 struct user_action_cookie {
109 uint8_t type; /* enum user_action_cookie_type. */
110 uint8_t n_output; /* No of output ports. used by sflow. */
111 ovs_be16 vlan_tci; /* Used by sFlow */
112 uint32_t data; /* Data is len for OFPP_CONTROLLER action.
113 For sFlow it is port_ifindex. */
116 BUILD_ASSERT_DECL(sizeof(struct user_action_cookie) == 8);
118 #endif /* odp-util.h */