/*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
struct ds;
struct flow;
+struct flow_tnl;
struct nlattr;
struct ofpbuf;
-struct shash;
-
-#define OVSP_NONE ((uint16_t) -1)
-
-static inline uint16_t
-ofp_port_to_odp_port(uint16_t ofp_port)
-{
- switch (ofp_port) {
- case OFPP_LOCAL:
- return OVSP_LOCAL;
- case OFPP_NONE:
- return OVSP_NONE;
- default:
- return ofp_port;
- }
-}
-
-static inline uint16_t
-odp_port_to_ofp_port(uint16_t odp_port)
-{
- switch (odp_port) {
- case OVSP_LOCAL:
- return OFPP_LOCAL;
- case OVSP_NONE:
- return OFPP_NONE;
- default:
- return odp_port;
- }
-}
+struct simap;
+
+#define OVSP_NONE UINT32_MAX
void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
size_t actions_len);
-int odp_actions_from_string(const char *, const struct shash *port_names,
+int odp_actions_from_string(const char *, const struct simap *port_names,
struct ofpbuf *odp_actions);
-/* Upper bound on the length of a nlattr-formatted flow key. The longest
- * nlattr-formatted flow key would be:
+/* The maximum number of bytes that odp_flow_key_from_flow() appends to a
+ * buffer. This is the upper bound on the length of a nlattr-formatted flow
+ * key that ovs-vswitchd fully understands.
+ *
+ * OVS doesn't insist that ovs-vswitchd and the datapath have exactly the same
+ * idea of a flow, so therefore this value isn't necessarily an upper bound on
+ * the length of a flow key that the datapath can pass to ovs-vswitchd.
+ *
+ * The longest nlattr-formatted flow key appended by odp_flow_key_from_flow()
+ * would be:
*
- * struct pad nl hdr total
- * ------ --- ------ -----
- * OVS_KEY_ATTR_PRIORITY 4 -- 4 8
- * OVS_KEY_ATTR_TUN_ID 8 -- 4 12
- * OVS_KEY_ATTR_IN_PORT 4 -- 4 8
- * OVS_KEY_ATTR_ETHERNET 12 -- 4 16
- * OVS_KEY_ATTR_8021Q 4 -- 4 8
- * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8
- * OVS_KEY_ATTR_IPV6 40 -- 4 44
- * OVS_KEY_ATTR_ICMPV6 2 2 4 8
- * OVS_KEY_ATTR_ND 28 -- 4 32
- * -------------------------------------------------
- * total 144
+ * struct pad nl hdr total
+ * ------ --- ------ -----
+ * OVS_KEY_ATTR_PRIORITY 4 -- 4 8
+ * OVS_KEY_ATTR_TUNNEL 0 -- 4 4
+ * - OVS_TUNNEL_KEY_ATTR_ID 8 -- 4 12
+ * - OVS_TUNNEL_KEY_ATTR_IPV4_SRC 4 -- 4 8
+ * - OVS_TUNNEL_KEY_ATTR_IPV4_DST 4 -- 4 8
+ * - OVS_TUNNEL_KEY_ATTR_TOS 1 3 4 8
+ * - OVS_TUNNEL_KEY_ATTR_TTL 1 3 4 8
+ * - OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT 0 -- 4 4
+ * - OVS_TUNNEL_KEY_ATTR_CSUM 0 -- 4 4
+ * OVS_KEY_ATTR_IN_PORT 4 -- 4 8
+ * OVS_KEY_ATTR_SKB_MARK 4 -- 4 8
+ * OVS_KEY_ATTR_ETHERNET 12 -- 4 16
+ * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (outer VLAN ethertype)
+ * OVS_KEY_ATTR_8021Q 4 -- 4 8
+ * OVS_KEY_ATTR_ENCAP 0 -- 4 4 (VLAN encapsulation)
+ * OVS_KEY_ATTR_ETHERTYPE 2 2 4 8 (inner VLAN ethertype)
+ * OVS_KEY_ATTR_IPV6 40 -- 4 44
+ * OVS_KEY_ATTR_ICMPV6 2 2 4 8
+ * OVS_KEY_ATTR_ND 28 -- 4 32
+ * ----------------------------------------------------------
+ * total 208
+ *
+ * We include some slack space in case the calculation isn't quite right or we
+ * add another field and forget to adjust this value.
*/
-#define ODPUTIL_FLOW_KEY_BYTES 144
+#define ODPUTIL_FLOW_KEY_BYTES 256
/* A buffer with sufficient size and alignment to hold an nlattr-formatted flow
* key. An array of "struct nlattr" might not, in theory, be sufficiently
};
void odp_flow_key_format(const struct nlattr *, size_t, struct ds *);
-int odp_flow_key_from_string(const char *s, const struct shash *port_names,
+int odp_flow_key_from_string(const char *s, const struct simap *port_names,
struct ofpbuf *);
-void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *);
+void odp_flow_key_from_flow(struct ofpbuf *, const struct flow *,
+ uint32_t odp_in_port);
uint32_t odp_flow_key_hash(const struct nlattr *, size_t);
struct flow *);
const char *odp_key_fitness_to_string(enum odp_key_fitness);
+void commit_odp_tunnel_action(const struct flow *, struct flow *base,
+ struct ofpbuf *odp_actions);
+void commit_odp_actions(const struct flow *, struct flow *base,
+ struct ofpbuf *odp_actions);
+\f
+/* ofproto-dpif interface.
+ *
+ * The following types and functions are logically part of ofproto-dpif.
+ * ofproto-dpif puts values of these types into the flows that it installs in
+ * the kernel datapath, though, so ovs-dpctl needs to interpret them so that
+ * it can print flows in a more human-readable manner. */
+
enum user_action_cookie_type {
USER_ACTION_COOKIE_UNSPEC,
- USER_ACTION_COOKIE_SFLOW, /* Packet for sFlow sampling. */
+ USER_ACTION_COOKIE_SFLOW, /* Packet for per-bridge sFlow sampling. */
+ USER_ACTION_COOKIE_SLOW_PATH, /* Userspace must process this flow. */
+ USER_ACTION_COOKIE_FLOW_SAMPLE, /* Packet for per-flow sampling. */
+ USER_ACTION_COOKIE_IPFIX, /* Packet for per-bridge IPFIX sampling. */
};
/* user_action_cookie is passed as argument to OVS_ACTION_ATTR_USERSPACE.
- * Since is it passed to kernel as u64, its size has to be 8 bytes. */
-struct user_action_cookie {
- uint8_t type; /* enum user_action_cookie_type. */
- uint8_t n_output; /* No of output ports. used by sflow. */
- ovs_be16 vlan_tci; /* Used by sFlow */
- uint32_t data; /* Data is len for OFPP_CONTROLLER action.
- For sFlow it is port_ifindex. */
+ * Since it is passed to kernel as u64, its size has to be 8 bytes. */
+union user_action_cookie {
+ uint16_t type; /* enum user_action_cookie_type. */
+
+ struct {
+ uint16_t type; /* USER_ACTION_COOKIE_SFLOW. */
+ ovs_be16 vlan_tci; /* Destination VLAN TCI. */
+ uint32_t output; /* SFL_FLOW_SAMPLE_TYPE 'output' value. */
+ } sflow;
+
+ struct {
+ uint16_t type; /* USER_ACTION_COOKIE_SLOW_PATH. */
+ uint16_t unused;
+ uint32_t reason; /* enum slow_path_reason. */
+ } slow_path;
+
+ struct {
+ uint16_t type; /* USER_ACTION_COOKIE_FLOW_SAMPLE. */
+ uint16_t probability; /* Sampling probability. */
+ uint32_t collector_set_id; /* ID of IPFIX collector set. */
+ uint32_t obs_domain_id; /* Observation Domain ID. */
+ uint32_t obs_point_id; /* Observation Point ID. */
+ } flow_sample;
+
+ struct {
+ uint16_t type; /* USER_ACTION_COOKIE_IPFIX. */
+ } ipfix;
};
-
-BUILD_ASSERT_DECL(sizeof(struct user_action_cookie) == 8);
+BUILD_ASSERT_DECL(sizeof(union user_action_cookie) == 16);
size_t odp_put_userspace_action(uint32_t pid,
- const struct user_action_cookie *,
+ const void *userdata, size_t userdata_size,
struct ofpbuf *odp_actions);
+void odp_put_tunnel_action(const struct flow_tnl *tunnel,
+ struct ofpbuf *odp_actions);
+void odp_put_skb_mark_action(const uint32_t skb_mark,
+ struct ofpbuf *odp_actions);
+
+/* Reasons why a subfacet might not be fast-pathable. */
+enum slow_path_reason {
+ /* These reasons are mutually exclusive. */
+ SLOW_CFM = 1 << 0, /* CFM packets need per-packet processing. */
+ SLOW_LACP = 1 << 1, /* LACP packets need per-packet processing. */
+ SLOW_STP = 1 << 2, /* STP packets need per-packet processing. */
+ SLOW_IN_BAND = 1 << 3, /* In-band control needs every packet. */
+
+ /* Mutually exclusive with SLOW_CFM, SLOW_LACP, SLOW_STP.
+ * Could possibly appear with SLOW_IN_BAND. */
+ SLOW_CONTROLLER = 1 << 4, /* Packets must go to OpenFlow controller. */
+
+ /* This can appear on its own, or, theoretically at least, along with any
+ * other combination of reasons. */
+ SLOW_MATCH = 1 << 5, /* Datapath can't match specifically enough. */
+};
-void commit_odp_actions(const struct flow *, struct flow *base,
- struct ofpbuf *odp_actions);
#endif /* odp-util.h */
projects / cascardo / ovs.git / blobdiff