/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 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.
struct flow_wildcards;
struct minimask;
struct ofpbuf;
+struct pkt_metadata;
/* This sequence number should be incremented whenever anything involving flows
* or the wildcarding of flows changes. This will cause build assertion
* failures in places which likely need to be updated. */
-#define FLOW_WC_SEQ 23
+#define FLOW_WC_SEQ 26
#define FLOW_N_REGS 8
BUILD_ASSERT_DECL(FLOW_N_REGS <= NXM_NX_MAX_REGS);
* numbers and other times datapath (dpif) port numbers. This union allows
* access to both. */
union flow_in_port {
- ofp_port_t ofp_port;
odp_port_t odp_port;
+ ofp_port_t ofp_port;
};
+/* Maximum number of supported MPLS labels. */
+#define FLOW_MAX_MPLS_LABELS 3
+
/*
* A flow in the network.
*
* The fields are organized in four segments to facilitate staged lookup, where
* lower layer fields are first used to determine if the later fields need to
* be looked at. This enables better wildcarding for datapath flows.
+ *
+ * NOTE: Order of the fields is significant, any change in the order must be
+ * reflected in miniflow_extract()!
*/
struct flow {
/* L1 */
uint32_t regs[FLOW_N_REGS]; /* Registers. */
uint32_t skb_priority; /* Packet priority for QoS. */
uint32_t pkt_mark; /* Packet mark. */
+ uint32_t recirc_id; /* Must be exact match. */
union flow_in_port in_port; /* Input port.*/
- /* L2 */
- uint8_t dl_src[6]; /* Ethernet source address. */
+ /* L2, Order the same as in the Ethernet header! */
uint8_t dl_dst[6]; /* Ethernet destination address. */
+ uint8_t dl_src[6]; /* Ethernet source address. */
ovs_be16 dl_type; /* Ethernet frame type. */
ovs_be16 vlan_tci; /* If 802.1Q, TCI | VLAN_CFI; otherwise 0. */
+ ovs_be32 mpls_lse[FLOW_MAX_MPLS_LABELS]; /* MPLS label stack entry. */
/* L3 */
- ovs_be32 mpls_lse; /* MPLS label stack entry. */
struct in6_addr ipv6_src; /* IPv6 source address. */
struct in6_addr ipv6_dst; /* IPv6 destination address. */
- struct in6_addr nd_target; /* IPv6 neighbor discovery (ND) target. */
ovs_be32 ipv6_label; /* IPv6 flow label. */
ovs_be32 nw_src; /* IPv4 source address. */
ovs_be32 nw_dst; /* IPv4 destination address. */
uint8_t nw_proto; /* IP protocol or low 8 bits of ARP opcode. */
uint8_t arp_sha[6]; /* ARP/ND source hardware address. */
uint8_t arp_tha[6]; /* ARP/ND target hardware address. */
+ struct in6_addr nd_target; /* IPv6 neighbor discovery (ND) target. */
ovs_be16 tcp_flags; /* TCP flags. With L3 to avoid matching L4. */
ovs_be16 pad; /* Padding. */
+
/* L4 */
ovs_be16 tp_src; /* TCP/UDP/SCTP source port. */
ovs_be16 tp_dst; /* TCP/UDP/SCTP destination port.
* Keep last for the BUILD_ASSERT_DECL below */
+ uint32_t dp_hash; /* Datapath computed hash value. The exact
+ computation is opaque to the user space.*/
};
BUILD_ASSERT_DECL(sizeof(struct flow) % 4 == 0);
#define FLOW_U32S (sizeof(struct flow) / 4)
/* Remember to update FLOW_WC_SEQ when changing 'struct flow'. */
-BUILD_ASSERT_DECL(offsetof(struct flow, tp_dst) + 2
- == sizeof(struct flow_tnl) + 156
- && FLOW_WC_SEQ == 23);
+BUILD_ASSERT_DECL(offsetof(struct flow, dp_hash) + sizeof(uint32_t)
+ == sizeof(struct flow_tnl) + 172
+ && FLOW_WC_SEQ == 26);
/* Incremental points at which flow classification may be performed in
* segments.
* This is located here since this is dependent on the structure of the
* struct flow defined above:
- * Each offset must be on a distint, successive U32 boundary srtictly
+ * Each offset must be on a distinct, successive U32 boundary strictly
* within the struct flow. */
enum {
- FLOW_SEGMENT_1_ENDS_AT = offsetof(struct flow, dl_src),
- FLOW_SEGMENT_2_ENDS_AT = offsetof(struct flow, mpls_lse),
+ FLOW_SEGMENT_1_ENDS_AT = offsetof(struct flow, dl_dst),
+ FLOW_SEGMENT_2_ENDS_AT = offsetof(struct flow, ipv6_src),
FLOW_SEGMENT_3_ENDS_AT = offsetof(struct flow, tp_src),
};
BUILD_ASSERT_DECL(FLOW_SEGMENT_1_ENDS_AT % 4 == 0);
/* Represents the metadata fields of struct flow. */
struct flow_metadata {
+ uint32_t dp_hash; /* Datapath computed hash field. */
+ uint32_t recirc_id; /* Recirculation ID. */
ovs_be64 tun_id; /* Encapsulating tunnel ID. */
ovs_be32 tun_src; /* Tunnel outer IPv4 src addr */
ovs_be32 tun_dst; /* Tunnel outer IPv4 dst addr */
ofp_port_t in_port; /* OpenFlow port or zero. */
};
-void flow_extract(struct ofpbuf *, uint32_t priority, uint32_t mark,
- const struct flow_tnl *, const union flow_in_port *in_port,
+void flow_extract(struct ofpbuf *, const struct pkt_metadata *md,
struct flow *);
void flow_zero_wildcards(struct flow *, const struct flow_wildcards *);
+void flow_unwildcard_tp_ports(const struct flow *, struct flow_wildcards *);
void flow_get_metadata(const struct flow *, struct flow_metadata *);
char *flow_to_string(const struct flow *);
void format_flags(struct ds *ds, const char *(*bit_to_string)(uint32_t),
uint32_t flags, char del);
+void format_flags_masked(struct ds *ds, const char *name,
+ const char *(*bit_to_string)(uint32_t),
+ uint32_t flags, uint32_t mask);
void flow_format(struct ds *, const struct flow *);
void flow_print(FILE *, const struct flow *);
void flow_set_vlan_vid(struct flow *, ovs_be16 vid);
void flow_set_vlan_pcp(struct flow *, uint8_t pcp);
-void flow_set_mpls_label(struct flow *flow, ovs_be32 label);
-void flow_set_mpls_ttl(struct flow *flow, uint8_t ttl);
-void flow_set_mpls_tc(struct flow *flow, uint8_t tc);
-void flow_set_mpls_bos(struct flow *flow, uint8_t stack);
+int flow_count_mpls_labels(const struct flow *, struct flow_wildcards *);
+int flow_count_common_mpls_labels(const struct flow *a, int an,
+ const struct flow *b, int bn,
+ struct flow_wildcards *wc);
+void flow_push_mpls(struct flow *, int n, ovs_be16 mpls_eth_type,
+ struct flow_wildcards *);
+bool flow_pop_mpls(struct flow *, int n, ovs_be16 eth_type,
+ struct flow_wildcards *);
+void flow_set_mpls_label(struct flow *, int idx, ovs_be32 label);
+void flow_set_mpls_ttl(struct flow *, int idx, uint8_t ttl);
+void flow_set_mpls_tc(struct flow *, int idx, uint8_t tc);
+void flow_set_mpls_bos(struct flow *, int idx, uint8_t stack);
+void flow_set_mpls_lse(struct flow *, int idx, ovs_be32 lse);
void flow_compose(struct ofpbuf *, const struct flow *);
void flow_wildcards_init_catchall(struct flow_wildcards *);
+void flow_wildcards_clear_non_packet_fields(struct flow_wildcards *);
+
bool flow_wildcards_is_catchall(const struct flow_wildcards *);
void flow_wildcards_set_reg_mask(struct flow_wildcards *,
uint32_t flow_wildcards_hash(const struct flow_wildcards *, uint32_t basis);
bool flow_wildcards_equal(const struct flow_wildcards *,
const struct flow_wildcards *);
+uint32_t flow_hash_5tuple(const struct flow *flow, uint32_t basis);
uint32_t flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis);
/* Initialize a flow with random fields that matter for nx_hash_fields. */
*
* Elements in 'values' are allowed to be zero. This is useful for "struct
* minimatch", for which ensuring that the miniflow and minimask members have
- * same 'map' allows optimization .
+ * same 'map' allows optimization. This allowance applies only to a miniflow
+ * that is not a mask. That is, a minimask may NOT have zero elements in
+ * its 'values'.
*/
struct miniflow {
uint64_t map;
uint32_t inline_values[MINI_N_INLINE];
};
+/* This is useful for initializing a miniflow for a miniflow_extract() call. */
+static inline void miniflow_initialize(struct miniflow *mf,
+ uint32_t buf[FLOW_U32S])
+{
+ mf->map = 0;
+ mf->values = buf;
+}
+
+struct pkt_metadata;
+
+/* The 'dst->values' must be initialized with a buffer with space for
+ * FLOW_U32S. 'dst->map' is ignored on input and set on output to
+ * indicate which fields were extracted. */
+void miniflow_extract(struct ofpbuf *packet, const struct pkt_metadata *,
+ struct miniflow *dst);
void miniflow_init(struct miniflow *, const struct flow *);
void miniflow_init_with_minimask(struct miniflow *, const struct flow *,
const struct minimask *);
uint32_t miniflow_hash(const struct miniflow *, uint32_t basis);
uint32_t miniflow_hash_in_minimask(const struct miniflow *,
const struct minimask *, uint32_t basis);
-uint64_t miniflow_get_map_in_range(const struct miniflow *, uint8_t start,
- uint8_t end, const uint32_t **data);
+uint64_t miniflow_get_map_in_range(const struct miniflow *miniflow,
+ uint8_t start, uint8_t end,
+ unsigned int *offset);
+
\f
/* Compressed flow wildcards. */
/* A sparse representation of a "struct flow_wildcards".
*
- * See the large comment on struct miniflow for details. */
+ * See the large comment on struct miniflow for details.
+ *
+ * Note: While miniflow can have zero data for a 1-bit in the map,
+ * a minimask may not! We rely on this in the implementation. */
struct minimask {
struct miniflow masks;
};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff