2 * Copyright (c) 2006, Myricom Inc.
3 * Copyright (c) 2008, Intel Corporation.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 SLIST_ENTRY(lro_entry) next;
46 struct in6_addr s_ip6;
50 struct in6_addr d_ip6;
54 uint16_t eh_type; /* EthernetHeader type. */
56 uint32_t p_len; /* IP header payload length. */
57 uint32_t ulp_csum; /* TCP, etc. checksum. */
58 uint32_t next_seq; /* tcp_seq */
59 uint32_t ack_seq; /* tcp_seq */
63 uint16_t timestamp; /* flag, not a TCP hdr field. */
66 SLIST_HEAD(lro_head, lro_entry);
68 #define le_ip4 leip.ip4
69 #define le_ip6 leip.ip6
70 #define source_ip4 lesource.s_ip4
71 #define dest_ip4 ledest.d_ip4
72 #define source_ip6 lesource.s_ip6
73 #define dest_ip6 ledest.d_ip6
75 /* NB: This is part of driver structs. */
83 struct lro_head lro_active;
84 struct lro_head lro_free;
87 int tcp_lro_init(struct lro_ctrl *);
88 void tcp_lro_free(struct lro_ctrl *);
89 void tcp_lro_flush_inactive(struct lro_ctrl *, const struct timeval *);
90 void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *);
91 int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t);
93 #define TCP_LRO_CANNOT -1
94 #define TCP_LRO_NOT_SUPPORTED 1
96 #endif /* _TCP_LRO_H_ */