/*
- * Copyright (c) 2012 Nicira, Inc.
+ * Copyright (c) 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#ifndef OFP_ACTIONS_H
#define OFP_ACTIONS_H 1
+#include <stddef.h>
#include <stdint.h>
#include "meta-flow.h"
#include "ofp-errors.h"
* This macro is used directly only internally by this header, but the list is
* still of interest to developers.
*
- * Each DEFINE_OFPACT invocation has the following parameters:
+ * Each OFPACT invocation has the following parameters:
*
* 1. <ENUM>, used below in the enum definition of OFPACT_<ENUM>, and
* elsewhere.
*
* - If "struct <STRUCT>" is variable-length, it must be the name of the
* flexible array member.
+ *
+ * 4. <NAME>, a quoted string that gives the name of the action, for use in
+ * parsing actions from text.
*/
-#define OFPACTS \
- /* Output. */ \
- DEFINE_OFPACT(OUTPUT, ofpact_output, ofpact) \
- DEFINE_OFPACT(CONTROLLER, ofpact_controller, ofpact) \
- DEFINE_OFPACT(ENQUEUE, ofpact_enqueue, ofpact) \
- DEFINE_OFPACT(OUTPUT_REG, ofpact_output_reg, ofpact) \
- DEFINE_OFPACT(BUNDLE, ofpact_bundle, slaves) \
- \
- /* Header changes. */ \
- DEFINE_OFPACT(SET_VLAN_VID, ofpact_vlan_vid, ofpact) \
- DEFINE_OFPACT(SET_VLAN_PCP, ofpact_vlan_pcp, ofpact) \
- DEFINE_OFPACT(STRIP_VLAN, ofpact_null, ofpact) \
- DEFINE_OFPACT(SET_ETH_SRC, ofpact_mac, ofpact) \
- DEFINE_OFPACT(SET_ETH_DST, ofpact_mac, ofpact) \
- DEFINE_OFPACT(SET_IPV4_SRC, ofpact_ipv4, ofpact) \
- DEFINE_OFPACT(SET_IPV4_DST, ofpact_ipv4, ofpact) \
- DEFINE_OFPACT(SET_IPV4_DSCP, ofpact_dscp, ofpact) \
- DEFINE_OFPACT(SET_L4_SRC_PORT, ofpact_l4_port, ofpact) \
- DEFINE_OFPACT(SET_L4_DST_PORT, ofpact_l4_port, ofpact) \
- DEFINE_OFPACT(REG_MOVE, ofpact_reg_move, ofpact) \
- DEFINE_OFPACT(REG_LOAD, ofpact_reg_load, ofpact) \
- DEFINE_OFPACT(DEC_TTL, ofpact_cnt_ids, cnt_ids) \
- \
- /* Metadata. */ \
- DEFINE_OFPACT(SET_TUNNEL, ofpact_tunnel, ofpact) \
- DEFINE_OFPACT(SET_QUEUE, ofpact_queue, ofpact) \
- DEFINE_OFPACT(POP_QUEUE, ofpact_null, ofpact) \
- DEFINE_OFPACT(FIN_TIMEOUT, ofpact_fin_timeout, ofpact) \
- \
- /* Flow table interaction. */ \
- DEFINE_OFPACT(RESUBMIT, ofpact_resubmit, ofpact) \
- DEFINE_OFPACT(LEARN, ofpact_learn, specs) \
- \
- /* Arithmetic. */ \
- DEFINE_OFPACT(MULTIPATH, ofpact_multipath, ofpact) \
- DEFINE_OFPACT(AUTOPATH, ofpact_autopath, ofpact) \
- \
- /* Other. */ \
- DEFINE_OFPACT(NOTE, ofpact_note, data) \
- DEFINE_OFPACT(EXIT, ofpact_null, ofpact)
+#define OFPACTS \
+ /* Output. */ \
+ OFPACT(OUTPUT, ofpact_output, ofpact, "output") \
+ OFPACT(GROUP, ofpact_group, ofpact, "group") \
+ OFPACT(CONTROLLER, ofpact_controller, ofpact, "controller") \
+ OFPACT(ENQUEUE, ofpact_enqueue, ofpact, "enqueue") \
+ OFPACT(OUTPUT_REG, ofpact_output_reg, ofpact, "output_reg") \
+ OFPACT(BUNDLE, ofpact_bundle, slaves, "bundle") \
+ \
+ /* Header changes. */ \
+ OFPACT(SET_FIELD, ofpact_set_field, ofpact, "set_field") \
+ OFPACT(SET_VLAN_VID, ofpact_vlan_vid, ofpact, "set_vlan_vid") \
+ OFPACT(SET_VLAN_PCP, ofpact_vlan_pcp, ofpact, "set_vlan_pcp") \
+ OFPACT(STRIP_VLAN, ofpact_null, ofpact, "strip_vlan") \
+ OFPACT(PUSH_VLAN, ofpact_null, ofpact, "push_vlan") \
+ OFPACT(SET_ETH_SRC, ofpact_mac, ofpact, "mod_dl_src") \
+ OFPACT(SET_ETH_DST, ofpact_mac, ofpact, "mod_dl_dst") \
+ OFPACT(SET_IPV4_SRC, ofpact_ipv4, ofpact, "mod_nw_src") \
+ OFPACT(SET_IPV4_DST, ofpact_ipv4, ofpact, "mod_nw_dst") \
+ OFPACT(SET_IP_DSCP, ofpact_dscp, ofpact, "mod_nw_tos") \
+ OFPACT(SET_IP_ECN, ofpact_ecn, ofpact, "mod_nw_ecn") \
+ OFPACT(SET_IP_TTL, ofpact_ip_ttl, ofpact, "mod_nw_ttl") \
+ OFPACT(SET_L4_SRC_PORT, ofpact_l4_port, ofpact, "mod_tp_src") \
+ OFPACT(SET_L4_DST_PORT, ofpact_l4_port, ofpact, "mod_tp_dst") \
+ OFPACT(REG_MOVE, ofpact_reg_move, ofpact, "move") \
+ OFPACT(STACK_PUSH, ofpact_stack, ofpact, "push") \
+ OFPACT(STACK_POP, ofpact_stack, ofpact, "pop") \
+ OFPACT(DEC_TTL, ofpact_cnt_ids, cnt_ids, "dec_ttl") \
+ OFPACT(SET_MPLS_LABEL, ofpact_mpls_label, ofpact, "set_mpls_label") \
+ OFPACT(SET_MPLS_TC, ofpact_mpls_tc, ofpact, "set_mpls_tc") \
+ OFPACT(SET_MPLS_TTL, ofpact_mpls_ttl, ofpact, "set_mpls_ttl") \
+ OFPACT(DEC_MPLS_TTL, ofpact_null, ofpact, "dec_mpls_ttl") \
+ OFPACT(PUSH_MPLS, ofpact_push_mpls, ofpact, "push_mpls") \
+ OFPACT(POP_MPLS, ofpact_pop_mpls, ofpact, "pop_mpls") \
+ \
+ /* Metadata. */ \
+ OFPACT(SET_TUNNEL, ofpact_tunnel, ofpact, "set_tunnel") \
+ OFPACT(SET_QUEUE, ofpact_queue, ofpact, "set_queue") \
+ OFPACT(POP_QUEUE, ofpact_null, ofpact, "pop_queue") \
+ OFPACT(FIN_TIMEOUT, ofpact_fin_timeout, ofpact, "fin_timeout") \
+ \
+ /* Flow table interaction. */ \
+ OFPACT(RESUBMIT, ofpact_resubmit, ofpact, "resubmit") \
+ OFPACT(LEARN, ofpact_learn, specs, "learn") \
+ \
+ /* Arithmetic. */ \
+ OFPACT(MULTIPATH, ofpact_multipath, ofpact, "multipath") \
+ \
+ /* Other. */ \
+ OFPACT(NOTE, ofpact_note, data, "note") \
+ OFPACT(EXIT, ofpact_null, ofpact, "exit") \
+ OFPACT(SAMPLE, ofpact_sample, ofpact, "sample") \
+ \
+ /* Instructions. */ \
+ OFPACT(METER, ofpact_meter, ofpact, "meter") \
+ OFPACT(CLEAR_ACTIONS, ofpact_null, ofpact, "clear_actions") \
+ OFPACT(WRITE_ACTIONS, ofpact_nest, ofpact, "write_actions") \
+ OFPACT(WRITE_METADATA, ofpact_metadata, ofpact, "write_metadata") \
+ OFPACT(GOTO_TABLE, ofpact_goto_table, ofpact, "goto_table")
/* enum ofpact_type, with a member OFPACT_<ENUM> for each action. */
enum OVS_PACKED_ENUM ofpact_type {
-#define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) OFPACT_##ENUM,
+#define OFPACT(ENUM, STRUCT, MEMBER, NAME) OFPACT_##ENUM,
OFPACTS
-#undef DEFINE_OFPACT
+#undef OFPACT
};
-/* N_OFPACTS, the number of values of "enum ofpact_type". */
+/* Define N_OFPACTS to the number of types of ofpacts. */
enum {
- N_OFPACTS =
-#define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) + 1
- OFPACTS
-#undef DEFINE_OFPACT
+#define OFPACT(ENUM, STRUCT, MEMBER, NAME) + 1
+ N_OFPACTS = OFPACTS
+#undef OFPACT
};
/* Header for an action.
* ofpact", usually followed by other data that describes the action. Actions
* are padded out to a multiple of OFPACT_ALIGNTO bytes in length.
*
- * The 'compat' member is special:
+ * The 'raw' member is special:
*
* - Most "struct ofpact"s correspond to one particular kind of OpenFlow
* action, at least in a given OpenFlow version. For example,
* OFPACT_SET_VLAN_VID corresponds to OFPAT10_SET_VLAN_VID in OpenFlow
* 1.0.
*
- * For such actions, the 'compat' member is not meaningful and generally
+ * For such actions, the 'raw' member is not meaningful and generally
* should be zero.
*
* - A few "struct ofpact"s correspond to multiple OpenFlow actions. For
* (Otherwise, we'd violate the promise made in DESIGN, in the "Action
* Reproduction" section.)
*
- * For such actions, the 'compat' member should be the original action
- * type. (If the action didn't originate from OpenFlow, then setting
- * 'compat' to zero should be fine: code to translate the ofpact to
- * OpenFlow must tolerate this case.)
+ * For such actions, the 'raw' member should be the "enum ofp_raw_action"
+ * originally extracted from the OpenFlow action. (If the action didn't
+ * originate from OpenFlow, then setting 'raw' to zero should be fine:
+ * code to translate the ofpact to OpenFlow must tolerate this case.)
*/
struct ofpact {
+ /* We want the space advantage of an 8-bit type here on every
+ * implementation, without giving up the advantage of having a useful type
+ * on implementations that support packed enums. */
+#ifdef HAVE_PACKED_ENUM
enum ofpact_type type; /* OFPACT_*. */
- enum ofputil_action_code compat; /* Original type when added, if any. */
+#else
+ uint8_t type; /* OFPACT_* */
+#endif
+
+ uint8_t raw; /* Original type when added, if any. */
uint16_t len; /* Length of the action, in bytes, including
* struct ofpact, excluding padding. */
};
-
-#ifdef __GNUC__
-/* Make sure that OVS_PACKED_ENUM really worked. */
BUILD_ASSERT_DECL(sizeof(struct ofpact) == 4);
-#endif
/* Alignment. */
#define OFPACT_ALIGNTO 8
\f
/* Action structure for each OFPACT_*. */
-/* OFPACT_STRIP_VLAN, OFPACT_POP_QUEUE, OFPACT_EXIT.
+/* OFPACT_STRIP_VLAN, OFPACT_POP_QUEUE, OFPACT_EXIT, OFPACT_CLEAR_ACTIONS.
*
- * Used for OFPAT10_STRIP_VLAN, NXAST_DEC_TTL, NXAST_POP_QUEUE, NXAST_EXIT.
+ * Used for OFPAT10_STRIP_VLAN, NXAST_POP_QUEUE, NXAST_EXIT,
+ * OFPAT11_POP_VLAN, OFPIT11_CLEAR_ACTIONS.
*
* Action structure for actions that do not have any extra data beyond the
* action type. */
* Used for OFPAT10_OUTPUT. */
struct ofpact_output {
struct ofpact ofpact;
- uint16_t port; /* Output port. */
+ ofp_port_t port; /* Output port. */
uint16_t max_len; /* Max send len, for port OFPP_CONTROLLER. */
};
* Used for OFPAT10_ENQUEUE. */
struct ofpact_enqueue {
struct ofpact ofpact;
- uint16_t port;
+ ofp_port_t port;
uint32_t queue;
};
* Used for NXAST_OUTPUT_REG. */
struct ofpact_output_reg {
struct ofpact ofpact;
- struct mf_subfield src;
uint16_t max_len;
+ struct mf_subfield src;
+};
+
+/* Bundle slave choice algorithm to apply.
+ *
+ * In the descriptions below, 'slaves' is the list of possible slaves in the
+ * order they appear in the OpenFlow action. */
+enum nx_bd_algorithm {
+ /* Chooses the first live slave listed in the bundle.
+ *
+ * O(n_slaves) performance. */
+ NX_BD_ALG_ACTIVE_BACKUP = 0,
+
+ /* Highest Random Weight.
+ *
+ * for i in [0,n_slaves):
+ * weights[i] = hash(flow, i)
+ * slave = { slaves[i] such that weights[i] >= weights[j] for all j != i }
+ *
+ * Redistributes 1/n_slaves of traffic when a slave's liveness changes.
+ * O(n_slaves) performance.
+ *
+ * Uses the 'fields' and 'basis' parameters. */
+ NX_BD_ALG_HRW = 1
};
/* OFPACT_BUNDLE.
/* Slaves for output. */
unsigned int n_slaves;
- uint16_t slaves[];
+ ofp_port_t slaves[];
};
/* OFPACT_SET_VLAN_VID.
*
- * Used for OFPAT10_SET_VLAN_VID. */
+ * We keep track if vlan was present at action validation time to avoid a
+ * PUSH_VLAN when translating to OpenFlow 1.1+.
+ *
+ * We also keep the originating OFPUTIL action code in ofpact.compat.
+ *
+ * Used for OFPAT10_SET_VLAN_VID and OFPAT11_SET_VLAN_VID. */
struct ofpact_vlan_vid {
struct ofpact ofpact;
uint16_t vlan_vid; /* VLAN VID in low 12 bits, 0 in other bits. */
+ bool push_vlan_if_needed; /* OF 1.0 semantics if true. */
+ bool flow_has_vlan; /* VLAN present at action validation time? */
};
/* OFPACT_SET_VLAN_PCP.
*
- * Used for OFPAT10_SET_VLAN_PCP. */
+ * We keep track if vlan was present at action validation time to avoid a
+ * PUSH_VLAN when translating to OpenFlow 1.1+.
+ *
+ * We also keep the originating OFPUTIL action code in ofpact.compat.
+ *
+ * Used for OFPAT10_SET_VLAN_PCP and OFPAT11_SET_VLAN_PCP. */
struct ofpact_vlan_pcp {
struct ofpact ofpact;
uint8_t vlan_pcp; /* VLAN PCP in low 3 bits, 0 in other bits. */
+ bool push_vlan_if_needed; /* OF 1.0 semantics if true. */
+ bool flow_has_vlan; /* VLAN present at action validation time? */
};
/* OFPACT_SET_ETH_SRC, OFPACT_SET_ETH_DST.
ovs_be32 ipv4;
};
-/* OFPACT_SET_IPV4_DSCP.
+/* OFPACT_SET_IP_DSCP.
*
* Used for OFPAT10_SET_NW_TOS. */
struct ofpact_dscp {
uint8_t dscp; /* DSCP in high 6 bits, rest ignored. */
};
+/* OFPACT_SET_IP_ECN.
+ *
+ * Used for OFPAT11_SET_NW_ECN. */
+struct ofpact_ecn {
+ struct ofpact ofpact;
+ uint8_t ecn; /* ECN in low 2 bits, rest ignored. */
+};
+
+/* OFPACT_SET_IP_TTL.
+ *
+ * Used for OFPAT11_SET_NW_TTL. */
+struct ofpact_ip_ttl {
+ struct ofpact ofpact;
+ uint8_t ttl;
+};
+
/* OFPACT_SET_L4_SRC_PORT, OFPACT_SET_L4_DST_PORT.
*
* Used for OFPAT10_SET_TP_SRC, OFPAT10_SET_TP_DST. */
struct ofpact_l4_port {
struct ofpact ofpact;
- uint16_t port; /* TCP or UDP port number. */
+ uint16_t port; /* TCP, UDP or SCTP port number. */
+ uint8_t flow_ip_proto; /* IP proto from corresponding match, or 0 */
};
/* OFPACT_REG_MOVE.
struct mf_subfield dst;
};
-/* OFPACT_REG_LOAD.
+/* OFPACT_STACK_PUSH.
*
- * Used for NXAST_REG_LOAD, OFPAT12_SET_FIELD. */
-struct ofpact_reg_load {
+ * Used for NXAST_STACK_PUSH and NXAST_STACK_POP. */
+struct ofpact_stack {
struct ofpact ofpact;
- struct mf_subfield dst;
- union mf_subvalue subvalue; /* Least-significant bits are used. */
+ struct mf_subfield subfield;
+};
+
+/* OFPACT_SET_FIELD.
+ *
+ * Used for NXAST_REG_LOAD and OFPAT12_SET_FIELD. */
+struct ofpact_set_field {
+ struct ofpact ofpact;
+ const struct mf_field *field;
+ bool flow_has_vlan; /* VLAN present at action validation time. */
+ union mf_value value;
+ union mf_value mask;
+};
+
+/* OFPACT_PUSH_VLAN/MPLS/PBB
+ *
+ * Used for NXAST_PUSH_MPLS, OFPAT11_PUSH_MPLS. */
+struct ofpact_push_mpls {
+ struct ofpact ofpact;
+ ovs_be16 ethertype;
+};
+
+/* OFPACT_POP_MPLS
+ *
+ * Used for NXAST_POP_MPLS, OFPAT11_POP_MPLS.. */
+struct ofpact_pop_mpls {
+ struct ofpact ofpact;
+ ovs_be16 ethertype;
};
/* OFPACT_SET_TUNNEL.
uint16_t fin_hard_timeout;
};
+/* OFPACT_WRITE_METADATA.
+ *
+ * Used for NXAST_WRITE_METADATA. */
+struct ofpact_metadata {
+ struct ofpact ofpact;
+ ovs_be64 metadata;
+ ovs_be64 mask;
+};
+
+/* OFPACT_METER.
+ *
+ * Used for OFPIT13_METER. */
+struct ofpact_meter {
+ struct ofpact ofpact;
+ uint32_t meter_id;
+};
+
+/* OFPACT_WRITE_ACTIONS.
+ *
+ * Used for OFPIT11_WRITE_ACTIONS. */
+struct ofpact_nest {
+ struct ofpact ofpact;
+ uint8_t pad[PAD_SIZE(sizeof(struct ofpact), OFPACT_ALIGNTO)];
+ struct ofpact actions[];
+};
+BUILD_ASSERT_DECL(offsetof(struct ofpact_nest, actions) % OFPACT_ALIGNTO == 0);
+BUILD_ASSERT_DECL(offsetof(struct ofpact_nest, actions)
+ == sizeof(struct ofpact_nest));
+
+static inline size_t
+ofpact_nest_get_action_len(const struct ofpact_nest *on)
+{
+ return on->ofpact.len - offsetof(struct ofpact_nest, actions);
+}
+
+void ofpacts_execute_action_set(struct ofpbuf *action_list,
+ const struct ofpbuf *action_set);
+
/* OFPACT_RESUBMIT.
*
* Used for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE. */
struct ofpact_resubmit {
struct ofpact ofpact;
- uint16_t in_port;
+ ofp_port_t in_port;
uint8_t table_id;
};
/* Part of struct ofpact_learn, below. */
struct ofpact_learn_spec {
- int n_bits;
+ int n_bits; /* Number of bits in source and dest. */
- int src_type;
- struct mf_subfield src;
- union mf_subvalue src_imm;
+ int src_type; /* One of NX_LEARN_SRC_*. */
+ struct mf_subfield src; /* NX_LEARN_SRC_FIELD only. */
+ union mf_subvalue src_imm; /* NX_LEARN_SRC_IMMEDIATE only. */
- int dst_type;
- struct mf_subfield dst;
+ int dst_type; /* One of NX_LEARN_DST_*. */
+ struct mf_subfield dst; /* NX_LEARN_DST_MATCH, NX_LEARN_DST_LOAD only. */
+};
+
+
+/* Bits for 'flags' in struct nx_action_learn.
+ *
+ * If NX_LEARN_F_SEND_FLOW_REM is set, then the learned flows will have their
+ * OFPFF_SEND_FLOW_REM flag set.
+ *
+ * If NX_LEARN_F_DELETE_LEARNED is set, then removing this action will delete
+ * all the flows from the learn action's 'table_id' that have the learn
+ * action's 'cookie'. Important points:
+ *
+ * - The deleted flows include those created by this action, those created
+ * by other learn actions with the same 'table_id' and 'cookie', those
+ * created by flow_mod requests by a controller in the specified table
+ * with the specified cookie, and those created through any other
+ * means.
+ *
+ * - If multiple flows specify "learn" actions with
+ * NX_LEARN_F_DELETE_LEARNED with the same 'table_id' and 'cookie', then
+ * no deletion occurs until all of those "learn" actions are deleted.
+ *
+ * - Deleting a flow that contains a learn action is the most obvious way
+ * to delete a learn action. Modifying a flow's actions, or replacing it
+ * by a new flow, can also delete a learn action. Finally, replacing a
+ * learn action with NX_LEARN_F_DELETE_LEARNED with a learn action
+ * without that flag also effectively deletes the learn action and can
+ * trigger flow deletion.
+ *
+ * NX_LEARN_F_DELETE_LEARNED was added in Open vSwitch 2.4. */
+enum nx_learn_flags {
+ NX_LEARN_F_SEND_FLOW_REM = 1 << 0,
+ NX_LEARN_F_DELETE_LEARNED = 1 << 1,
};
+#define NX_LEARN_N_BITS_MASK 0x3ff
+
+#define NX_LEARN_SRC_FIELD (0 << 13) /* Copy from field. */
+#define NX_LEARN_SRC_IMMEDIATE (1 << 13) /* Copy from immediate value. */
+#define NX_LEARN_SRC_MASK (1 << 13)
+
+#define NX_LEARN_DST_MATCH (0 << 11) /* Add match criterion. */
+#define NX_LEARN_DST_LOAD (1 << 11) /* Add NXAST_REG_LOAD action. */
+#define NX_LEARN_DST_OUTPUT (2 << 11) /* Add OFPAT_OUTPUT action. */
+#define NX_LEARN_DST_RESERVED (3 << 11) /* Not yet defined. */
+#define NX_LEARN_DST_MASK (3 << 11)
+
/* OFPACT_LEARN.
*
* Used for NXAST_LEARN. */
uint16_t idle_timeout; /* Idle time before discarding (seconds). */
uint16_t hard_timeout; /* Max time before discarding (seconds). */
uint16_t priority; /* Priority level of flow entry. */
- uint64_t cookie; /* Cookie for new flow. */
- uint16_t flags; /* Either 0 or OFPFF_SEND_FLOW_REM. */
uint8_t table_id; /* Table to insert flow entry. */
+ ovs_be64 cookie; /* Cookie for new flow. */
+ enum nx_learn_flags flags; /* NX_LEARN_F_*. */
uint16_t fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */
uint16_t fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */
struct ofpact_learn_spec specs[];
};
+/* Multipath link choice algorithm to apply.
+ *
+ * In the descriptions below, 'n_links' is max_link + 1. */
+enum nx_mp_algorithm {
+ /* link = hash(flow) % n_links.
+ *
+ * Redistributes all traffic when n_links changes. O(1) performance. See
+ * RFC 2992.
+ *
+ * Use UINT16_MAX for max_link to get a raw hash value. */
+ NX_MP_ALG_MODULO_N = 0,
+
+ /* link = hash(flow) / (MAX_HASH / n_links).
+ *
+ * Redistributes between one-quarter and one-half of traffic when n_links
+ * changes. O(1) performance. See RFC 2992.
+ */
+ NX_MP_ALG_HASH_THRESHOLD = 1,
+
+ /* Highest Random Weight.
+ *
+ * for i in [0,n_links):
+ * weights[i] = hash(flow, i)
+ * link = { i such that weights[i] >= weights[j] for all j != i }
+ *
+ * Redistributes 1/n_links of traffic when n_links changes. O(n_links)
+ * performance. If n_links is greater than a threshold (currently 64, but
+ * subject to change), Open vSwitch will substitute another algorithm
+ * automatically. See RFC 2992. */
+ NX_MP_ALG_HRW = 2,
+
+ /* Iterative Hash.
+ *
+ * i = 0
+ * repeat:
+ * i = i + 1
+ * link = hash(flow, i) % arg
+ * while link > max_link
+ *
+ * Redistributes 1/n_links of traffic when n_links changes. O(1)
+ * performance when arg/max_link is bounded by a constant.
+ *
+ * Redistributes all traffic when arg changes.
+ *
+ * arg must be greater than max_link and for best performance should be no
+ * more than approximately max_link * 2. If arg is outside the acceptable
+ * range, Open vSwitch will automatically substitute the least power of 2
+ * greater than max_link.
+ *
+ * This algorithm is specific to Open vSwitch.
+ */
+ NX_MP_ALG_ITER_HASH = 3,
+};
+
/* OFPACT_MULTIPATH.
*
* Used for NXAST_MULTIPATH. */
struct mf_subfield dst;
};
-/* OFPACT_AUTOPATH.
- *
- * Used for NXAST_AUTOPATH. */
-struct ofpact_autopath {
- struct ofpact ofpact;
- struct mf_subfield dst;
- uint32_t port;
-};
-
/* OFPACT_NOTE.
*
* Used for NXAST_NOTE. */
uint8_t data[];
};
+/* OFPACT_SAMPLE.
+ *
+ * Used for NXAST_SAMPLE. */
+struct ofpact_sample {
+ struct ofpact ofpact;
+ uint16_t probability; // Always >0.
+ uint32_t collector_set_id;
+ uint32_t obs_domain_id;
+ uint32_t obs_point_id;
+};
+
/* OFPACT_DEC_TTL.
*
- * Used for NXAST_DEC_TTL and NXAST_DEC_TTL_CNT_IDS. */
+ * Used for OFPAT11_DEC_NW_TTL, NXAST_DEC_TTL and NXAST_DEC_TTL_CNT_IDS. */
struct ofpact_cnt_ids {
struct ofpact ofpact;
/* Controller ids. */
unsigned int n_controllers;
uint16_t cnt_ids[];
+};
+
+/* OFPACT_SET_MPLS_LABEL.
+ *
+ * Used for OFPAT11_SET_MPLS_LABEL and NXAST_SET_MPLS_LABEL */
+struct ofpact_mpls_label {
+ struct ofpact ofpact;
+
+ ovs_be32 label;
+};
+/* OFPACT_SET_MPLS_TC.
+ *
+ * Used for OFPAT11_SET_MPLS_TC and NXAST_SET_MPLS_TC */
+struct ofpact_mpls_tc {
+ struct ofpact ofpact;
+
+ uint8_t tc;
+};
+
+/* OFPACT_SET_MPLS_TTL.
+ *
+ * Used for OFPAT11_SET_MPLS_TTL and NXAST_SET_MPLS_TTL */
+struct ofpact_mpls_ttl {
+ struct ofpact ofpact;
+
+ uint8_t ttl;
+};
+
+/* OFPACT_GOTO_TABLE
+ *
+ * Used for OFPIT11_GOTO_TABLE */
+struct ofpact_goto_table {
+ struct ofpact ofpact;
+ uint8_t table_id;
+};
+
+/* OFPACT_GROUP.
+ *
+ * Used for OFPAT11_GROUP. */
+struct ofpact_group {
+ struct ofpact ofpact;
+ uint32_t group_id;
};
/* Converting OpenFlow to ofpacts. */
-enum ofperr ofpacts_pull_openflow10(struct ofpbuf *openflow,
- unsigned int actions_len,
- struct ofpbuf *ofpacts);
-enum ofperr ofpacts_pull_openflow11_actions(struct ofpbuf *openflow,
- unsigned int actions_len,
- struct ofpbuf *ofpacts);
-enum ofperr ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow,
- unsigned int instructions_len,
- struct ofpbuf *ofpacts);
-enum ofperr ofpacts_check(const struct ofpact[], size_t ofpacts_len,
- const struct flow *, int max_ports);
+enum ofperr ofpacts_pull_openflow_actions(struct ofpbuf *openflow,
+ unsigned int actions_len,
+ enum ofp_version version,
+ struct ofpbuf *ofpacts);
+enum ofperr ofpacts_pull_openflow_instructions(struct ofpbuf *openflow,
+ unsigned int instructions_len,
+ enum ofp_version version,
+ struct ofpbuf *ofpacts);
+enum ofperr ofpacts_check(struct ofpact[], size_t ofpacts_len,
+ struct flow *, ofp_port_t max_ports,
+ uint8_t table_id, uint8_t n_tables,
+ enum ofputil_protocol *usable_protocols);
+enum ofperr ofpacts_check_consistency(struct ofpact[], size_t ofpacts_len,
+ struct flow *, ofp_port_t max_ports,
+ uint8_t table_id, uint8_t n_tables,
+ enum ofputil_protocol usable_protocols);
+enum ofperr ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports);
/* Converting ofpacts to OpenFlow. */
-void ofpacts_put_openflow10(const struct ofpact[], size_t ofpacts_len,
- struct ofpbuf *openflow);
-size_t ofpacts_put_openflow11_actions(const struct ofpact[], size_t ofpacts_len,
- struct ofpbuf *openflow);
-void ofpacts_put_openflow11_instructions(const struct ofpact[],
- size_t ofpacts_len,
- struct ofpbuf *openflow);
+size_t ofpacts_put_openflow_actions(const struct ofpact[], size_t ofpacts_len,
+ struct ofpbuf *openflow, enum ofp_version);
+void ofpacts_put_openflow_instructions(const struct ofpact[],
+ size_t ofpacts_len,
+ struct ofpbuf *openflow,
+ enum ofp_version ofp_version);
+
+/* Sets of supported actions. */
+ovs_be32 ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version);
+uint64_t ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version);
+void ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *);
/* Working with ofpacts. */
bool ofpacts_output_to_port(const struct ofpact[], size_t ofpacts_len,
- uint16_t port);
+ ofp_port_t port);
+bool ofpacts_output_to_group(const struct ofpact[], size_t ofpacts_len,
+ uint32_t group_id);
bool ofpacts_equal(const struct ofpact a[], size_t a_len,
const struct ofpact b[], size_t b_len);
+uint32_t ofpacts_get_meter(const struct ofpact[], size_t ofpacts_len);
-/* Formatting ofpacts.
- *
- * (For parsing ofpacts, see ofp-parse.h.) */
+/* Formatting and parsing ofpacts. */
void ofpacts_format(const struct ofpact[], size_t ofpacts_len, struct ds *);
+char *ofpacts_parse_actions(const char *, struct ofpbuf *ofpacts,
+ enum ofputil_protocol *usable_protocols)
+ OVS_WARN_UNUSED_RESULT;
+char *ofpacts_parse_instructions(const char *, struct ofpbuf *ofpacts,
+ enum ofputil_protocol *usable_protocols)
+ OVS_WARN_UNUSED_RESULT;
+const char *ofpact_name(enum ofpact_type);
/* Internal use by the helpers below. */
void ofpact_init(struct ofpact *, enum ofpact_type, size_t len);
* After using this function to add a variable-length action, add the
* elements of the flexible array (e.g. with ofpbuf_put()), then use
* ofpact_update_len() to update the length embedded into the action.
- * (Keep in mind the need to refresh the structure from 'ofpacts->l2' after
- * adding data to 'ofpacts'.)
+ * (Keep in mind the need to refresh the structure from 'ofpacts->frame'
+ * after adding data to 'ofpacts'.)
*
* struct <STRUCT> *ofpact_get_<ENUM>(const struct ofpact *ofpact);
*
* An integer constant, the value of OFPACT_<ENUM>_RAW_SIZE rounded up to a
* multiple of OFPACT_ALIGNTO.
*/
-#define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) \
+#define OFPACT(ENUM, STRUCT, MEMBER, NAME) \
BUILD_ASSERT_DECL(offsetof(struct STRUCT, ofpact) == 0); \
\
enum { OFPACT_##ENUM##_RAW_SIZE \
static inline struct STRUCT * \
ofpact_get_##ENUM(const struct ofpact *ofpact) \
{ \
- assert(ofpact->type == OFPACT_##ENUM); \
- return (struct STRUCT *) ofpact; \
+ ovs_assert(ofpact->type == OFPACT_##ENUM); \
+ return ALIGNED_CAST(struct STRUCT *, ofpact); \
} \
\
static inline struct STRUCT * \
OFPACT_##ENUM##_RAW_SIZE); \
}
OFPACTS
-#undef DEFINE_OFPACT
+#undef OFPACT
/* Functions to use after adding ofpacts to a buffer. */
void ofpact_update_len(struct ofpbuf *, struct ofpact *);
void ofpact_pad(struct ofpbuf *);
+/* Additional functions for composing ofpacts. */
+struct ofpact_set_field *ofpact_put_reg_load(struct ofpbuf *ofpacts);
+
/* OpenFlow 1.1 instructions.
* The order is sorted in execution order. Not in the value of OFPIT11_xxx.
* It is enforced on parser from text string.
*/
#define OVS_INSTRUCTIONS \
+ DEFINE_INST(OFPIT13_METER, \
+ ofp13_instruction_meter, false, \
+ "meter") \
+ \
DEFINE_INST(OFPIT11_APPLY_ACTIONS, \
ofp11_instruction_actions, true, \
"apply_actions") \
#undef DEFINE_INST
};
-const char *ofpact_instruction_name_from_type(enum ovs_instruction_type type);
-int ofpact_instruction_type_from_name(const char *name);
+const char *ovs_instruction_name_from_type(enum ovs_instruction_type type);
+int ovs_instruction_type_from_name(const char *name);
+enum ovs_instruction_type ovs_instruction_type_from_ofpact_type(
+ enum ofpact_type);
+enum ofperr ovs_instruction_type_from_inst_type(
+ enum ovs_instruction_type *instruction_type, const uint16_t inst_type);
-void ofpact_set_field_init(struct ofpact_reg_load *load,
- const struct mf_field *mf, const void *src);
+ovs_be32 ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version);
+uint32_t ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap,
+ enum ofp_version);
#endif /* ofp-actions.h */
projects / cascardo / ovs.git / blobdiff