+extern const struct in6_addr in6addr_exact;
+#define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
+
+static inline bool ipv6_addr_equals(const struct in6_addr *a,
+ const struct in6_addr *b)
+{
+#ifdef IN6_ARE_ADDR_EQUAL
+ return IN6_ARE_ADDR_EQUAL(a, b);
+#else
+ return !memcmp(a, b, sizeof(*a));
+#endif
+}
+
+static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
+ return ipv6_addr_equals(mask, &in6addr_any);
+}
+
+static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
+ return ipv6_addr_equals(mask, &in6addr_exact);
+}
+
+void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
+void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
+struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
+ const struct in6_addr *mask);
+struct in6_addr ipv6_create_mask(int mask);
+int ipv6_count_cidr_bits(const struct in6_addr *netmask);
+bool ipv6_is_cidr(const struct in6_addr *netmask);
+
+void *
+compose_packet(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
+ const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
+ size_t size);
+
+/* Masks for lacp_info state member. */
+#define LACP_STATE_ACT 0x01 /* Activity. Active or passive? */
+#define LACP_STATE_TIME 0x02 /* Timeout. Short or long timeout? */
+#define LACP_STATE_AGG 0x04 /* Aggregation. Is the link is bondable? */
+#define LACP_STATE_SYNC 0x08 /* Synchronization. Is the link in up to date? */
+#define LACP_STATE_COL 0x10 /* Collecting. Is the link receiving frames? */
+#define LACP_STATE_DIST 0x20 /* Distributing. Is the link sending frames? */
+#define LACP_STATE_DEF 0x40 /* Defaulted. Using default partner info? */
+#define LACP_STATE_EXP 0x80 /* Expired. Using expired partner info? */
+
+#define LACP_FAST_TIME_TX 1000 /* Fast transmission rate. */
+#define LACP_SLOW_TIME_TX 30000 /* Slow transmission rate. */
+#define LACP_FAST_TIME_RX (LACP_FAST_TIME_TX * 3) /* Fast receive rate. */
+#define LACP_SLOW_TIME_RX (LACP_SLOW_TIME_TX * 3) /* Slow receive rate. */
+
+#define LACP_INFO_LEN 15
+struct lacp_info {
+ ovs_be16 sys_priority; /* System priority. */
+ uint8_t sys_id[ETH_ADDR_LEN]; /* System ID. */
+ ovs_be16 key; /* Operational key. */
+ ovs_be16 port_priority; /* Port priority. */
+ ovs_be16 port_id; /* Port ID. */
+ uint8_t state; /* State mask. See LACP_STATE macros. */
+} __attribute__((packed));
+BUILD_ASSERT_DECL(LACP_INFO_LEN == sizeof(struct lacp_info));
+
+#define LACP_PDU_LEN 110
+struct lacp_pdu {
+ uint8_t subtype; /* Always 1. */
+ uint8_t version; /* Always 1. */
+
+ uint8_t actor_type; /* Always 1. */
+ uint8_t actor_len; /* Always 20. */
+ struct lacp_info actor; /* LACP actor information. */
+ uint8_t z1[3]; /* Reserved. Always 0. */
+
+ uint8_t partner_type; /* Always 2. */
+ uint8_t partner_len; /* Always 20. */
+ struct lacp_info partner; /* LACP partner information. */
+ uint8_t z2[3]; /* Reserved. Always 0. */
+
+ uint8_t collector_type; /* Always 3. */
+ uint8_t collector_len; /* Always 16. */
+ ovs_be16 collector_delay; /* Maximum collector delay. Set to UINT16_MAX. */
+ uint8_t z3[64]; /* Combination of several fields. Always 0. */
+} __attribute__((packed));
+BUILD_ASSERT_DECL(LACP_PDU_LEN == sizeof(struct lacp_pdu));
+
+void compose_lacp_pdu(const struct lacp_info *actor,
+ const struct lacp_info *partner, struct lacp_pdu *);
+
+const struct lacp_pdu *parse_lacp_packet(const struct ofpbuf *);
+