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.
25 #include "openflow/openflow.h"
26 #include "openvswitch/datapath-protocol.h"
33 #define OVSP_NONE ((uint16_t) -1)
35 static inline uint16_t
36 ofp_port_to_odp_port(uint16_t ofp_port)
48 static inline uint16_t
49 odp_port_to_ofp_port(uint16_t odp_port)
61 int odp_action_len(uint16_t type);
62 void format_odp_action(struct ds *, const struct nlattr *);
63 void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
66 /* Upper bound on the length of a nlattr-formatted flow key. The longest
67 * nlattr-formatted flow key would be:
69 * struct pad nl hdr total
70 * ------ --- ------ -----
71 * OVS_KEY_ATTR_TUN_ID 8 -- 4 12
72 * OVS_KEY_ATTR_IN_PORT 4 -- 4 8
73 * OVS_KEY_ATTR_ETHERNET 12 -- 4 16
74 * OVS_KEY_ATTR_8021Q 4 -- 4 8
75 * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8
76 * OVS_KEY_ATTR_IPV6 34 2 4 40
77 * OVS_KEY_ATTR_ICMPV6 2 2 4 8
78 * OVS_KEY_ATTR_ND 28 -- 4 32
79 * -------------------------------------------------
82 #define ODPUTIL_FLOW_KEY_BYTES 132
84 /* This is an imperfect sanity-check that ODPUTIL_FLOW_KEY_BYTES doesn't
85 * need to be updated, but will at least raise awareness when new OVS
86 * datapath key types are added. */
87 BUILD_ASSERT_DECL(__OVS_KEY_ATTR_MAX == 14);
89 /* A buffer with sufficient size and alignment to hold an nlattr-formatted flow
90 * key. An array of "struct nlattr" might not, in theory, be sufficiently
91 * aligned because it only contains 16-bit types. */
92 struct odputil_keybuf {
93 uint32_t keybuf[DIV_ROUND_UP(ODPUTIL_FLOW_KEY_BYTES, 4)];
96 void odp_flow_key_format(const struct nlattr *, size_t, struct ds *);
97 int odp_flow_key_from_string(const char *s, struct ofpbuf *);
99 void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *);
100 int odp_flow_key_to_flow(const struct nlattr *, size_t, struct flow *);
102 enum user_action_cookie_type {
103 USER_ACTION_COOKIE_UNSPEC,
104 USER_ACTION_COOKIE_CONTROLLER, /* Packet for controller. */
105 USER_ACTION_COOKIE_SFLOW, /* Packet for sFlow sampling. */
108 /* user_action_cookie is passed as argument to OVS_ACTION_ATTR_USERSPACE.
109 * Since is it passed to kernel as u64, its size has to be 8 bytes. */
110 struct user_action_cookie {
111 uint8_t type; /* enum user_action_cookie_type. */
112 uint8_t n_output; /* No of output ports. used by sflow. */
113 ovs_be16 vlan_tci; /* Used by sFlow */
114 uint32_t data; /* Data is len for OFPP_CONTROLLER action.
115 For sFlow it is port_ifindex. */
118 BUILD_ASSERT_DECL(sizeof(struct user_action_cookie) == 8);
120 #endif /* odp-util.h */