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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. Neither the name of the Myricom Inc, nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
2. Neither the name of the Intel Corporation, nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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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