| /******************************************************************************* |
| |
| 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 _BSD_TCP_LRO_H_ |
| #define _BSD_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 /* _BSD_TCP_LRO_H_ */ |
