1235474Sbz/*- 2235474Sbz * Copyright (c) 2006, Myricom Inc. 3235474Sbz * Copyright (c) 2008, Intel Corporation. 4294327Shselasky * Copyright (c) 2016 Mellanox Technologies. 5235474Sbz * All rights reserved. 6235474Sbz * 7235474Sbz * Redistribution and use in source and binary forms, with or without 8235474Sbz * modification, are permitted provided that the following conditions 9235474Sbz * are met: 10235474Sbz * 1. Redistributions of source code must retain the above copyright 11235474Sbz * notice, this list of conditions and the following disclaimer. 12235474Sbz * 2. Redistributions in binary form must reproduce the above copyright 13235474Sbz * notice, this list of conditions and the following disclaimer in the 14235474Sbz * documentation and/or other materials provided with the distribution. 15235474Sbz * 16235474Sbz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17235474Sbz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18235474Sbz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19235474Sbz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20235474Sbz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21235474Sbz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22235474Sbz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23235474Sbz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24235474Sbz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25235474Sbz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26235474Sbz * SUCH DAMAGE. 27235474Sbz * 28235474Sbz * $FreeBSD$ 29235474Sbz */ 30179737Sjfv 31179737Sjfv#ifndef _TCP_LRO_H_ 32179737Sjfv#define _TCP_LRO_H_ 33179737Sjfv 34255010Snp#include <sys/time.h> 35255010Snp 36294327Shselasky#ifndef TCP_LRO_ENTRIES 37294327Shselasky/* Define default number of LRO entries per RX queue */ 38294327Shselasky#define TCP_LRO_ENTRIES 8 39294327Shselasky#endif 40294327Shselasky 41297483Ssephestruct lro_entry { 42297483Ssephe LIST_ENTRY(lro_entry) next; 43235944Sbz struct mbuf *m_head; 44235944Sbz struct mbuf *m_tail; 45235944Sbz union { 46235944Sbz struct ip *ip4; 47235944Sbz struct ip6_hdr *ip6; 48235944Sbz } leip; 49235944Sbz union { 50235944Sbz in_addr_t s_ip4; 51235944Sbz struct in6_addr s_ip6; 52235944Sbz } lesource; 53235944Sbz union { 54235944Sbz in_addr_t d_ip4; 55235944Sbz struct in6_addr d_ip6; 56235944Sbz } ledest; 57235944Sbz uint16_t source_port; 58235944Sbz uint16_t dest_port; 59235944Sbz uint16_t eh_type; /* EthernetHeader type. */ 60235944Sbz uint16_t append_cnt; 61235944Sbz uint32_t p_len; /* IP header payload length. */ 62235944Sbz uint32_t ulp_csum; /* TCP, etc. checksum. */ 63235944Sbz uint32_t next_seq; /* tcp_seq */ 64235944Sbz uint32_t ack_seq; /* tcp_seq */ 65235944Sbz uint32_t tsval; 66235944Sbz uint32_t tsecr; 67235944Sbz uint16_t window; 68235944Sbz uint16_t timestamp; /* flag, not a TCP hdr field. */ 69255010Snp struct timeval mtime; 70179737Sjfv}; 71297483SsepheLIST_HEAD(lro_head, lro_entry); 72179737Sjfv 73235944Sbz#define le_ip4 leip.ip4 74235944Sbz#define le_ip6 leip.ip6 75235944Sbz#define source_ip4 lesource.s_ip4 76235944Sbz#define dest_ip4 ledest.d_ip4 77235944Sbz#define source_ip6 lesource.s_ip6 78235944Sbz#define dest_ip6 ledest.d_ip6 79235944Sbz 80300731Shselaskystruct lro_mbuf_sort { 81300731Shselasky uint64_t seq; 82300731Shselasky struct mbuf *mb; 83300731Shselasky}; 84300731Shselasky 85235944Sbz/* NB: This is part of driver structs. */ 86179737Sjfvstruct lro_ctrl { 87179737Sjfv struct ifnet *ifp; 88300731Shselasky struct lro_mbuf_sort *lro_mbuf_data; 89294327Shselasky uint64_t lro_queued; 90294327Shselasky uint64_t lro_flushed; 91294327Shselasky uint64_t lro_bad_csum; 92294327Shselasky unsigned lro_cnt; 93294327Shselasky unsigned lro_mbuf_count; 94294327Shselasky unsigned lro_mbuf_max; 95295739Ssephe unsigned short lro_ackcnt_lim; /* max # of aggregated ACKs */ 96295739Ssephe unsigned lro_length_lim; /* max len of aggregated data */ 97179737Sjfv 98179737Sjfv struct lro_head lro_active; 99179737Sjfv struct lro_head lro_free; 100179737Sjfv}; 101179737Sjfv 102295739Ssephe#define TCP_LRO_LENGTH_MAX 65535 103295739Ssephe#define TCP_LRO_ACKCNT_MAX 65535 /* unlimited */ 104295739Ssephe 105179737Sjfvint tcp_lro_init(struct lro_ctrl *); 106294327Shselaskyint tcp_lro_init_args(struct lro_ctrl *, struct ifnet *, unsigned, unsigned); 107179737Sjfvvoid tcp_lro_free(struct lro_ctrl *); 108255010Snpvoid tcp_lro_flush_inactive(struct lro_ctrl *, const struct timeval *); 109179737Sjfvvoid tcp_lro_flush(struct lro_ctrl *, struct lro_entry *); 110294327Shselaskyvoid tcp_lro_flush_all(struct lro_ctrl *); 111179737Sjfvint tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t); 112294327Shselaskyvoid tcp_lro_queue_mbuf(struct lro_ctrl *, struct mbuf *); 113179737Sjfv 114297265Ssephe#define TCP_LRO_NO_ENTRIES -2 115235944Sbz#define TCP_LRO_CANNOT -1 116235944Sbz#define TCP_LRO_NOT_SUPPORTED 1 117179737Sjfv 118179737Sjfv#endif /* _TCP_LRO_H_ */ 119