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86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
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/*******************************************************************************
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Copyright (c) 2006, Myricom Inc.
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Copyright (c) 2008, Intel Corporation.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the Myricom Inc, nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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2. Neither the name of the Intel Corporation, nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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$FreeBSD$
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***************************************************************************/
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#ifndef _TCP_LRO_H_
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#define _TCP_LRO_H_
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struct lro_entry;
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struct lro_entry
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{
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SLIST_ENTRY(lro_entry) next;
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struct mbuf *m_head;
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struct mbuf *m_tail;
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int timestamp;
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struct ip *ip;
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uint32_t tsval;
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uint32_t tsecr;
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uint32_t source_ip;
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uint32_t dest_ip;
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uint32_t next_seq;
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uint32_t ack_seq;
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uint32_t len;
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uint32_t data_csum;
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uint16_t window;
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uint16_t source_port;
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uint16_t dest_port;
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uint16_t append_cnt;
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uint16_t mss;
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};
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SLIST_HEAD(lro_head, lro_entry);
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struct lro_ctrl {
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struct ifnet *ifp;
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int lro_queued;
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int lro_flushed;
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int lro_bad_csum;
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int lro_cnt;
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struct lro_head lro_active;
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struct lro_head lro_free;
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};
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int tcp_lro_init(struct lro_ctrl *);
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void tcp_lro_free(struct lro_ctrl *);
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void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *);
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int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t);
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/* Number of LRO entries - these are per rx queue */
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#define LRO_ENTRIES 8
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#endif /* _TCP_LRO_H_ */
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