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/*-
* Copyright (c) 2006, Myricom Inc.
* Copyright (c) 2008, Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _TCP_LRO_H_
#define _TCP_LRO_H_
struct lro_entry;
struct lro_entry
{
SLIST_ENTRY(lro_entry) next;
struct mbuf *m_head;
struct mbuf *m_tail;
int timestamp;
struct ip *ip;
uint32_t tsval;
uint32_t tsecr;
uint32_t source_ip;
uint32_t dest_ip;
uint32_t next_seq;
uint32_t ack_seq;
uint32_t len;
uint32_t data_csum;
uint16_t window;
uint16_t source_port;
uint16_t dest_port;
uint16_t append_cnt;
uint16_t mss;
};
SLIST_HEAD(lro_head, lro_entry);
struct lro_ctrl {
struct ifnet *ifp;
int lro_queued;
int lro_flushed;
int lro_bad_csum;
int lro_cnt;
struct lro_head lro_active;
struct lro_head lro_free;
};
int tcp_lro_init(struct lro_ctrl *);
void tcp_lro_free(struct lro_ctrl *);
void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *);
int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t);
/* Number of LRO entries - these are per rx queue */
#define LRO_ENTRIES 8
#endif /* _TCP_LRO_H_ */
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