1/* 2 * Copyright (c) 2011 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29#ifndef LRO_EXT_H_ 30#define LRO_EXT_H_ 31 32#ifdef BSD_KERNEL_PRIVATE 33 34/* All definitions exported from LRO go into this file */ 35 36extern int sw_lro; 37extern int lrodebug; 38 39/* flow return values */ 40#define TCP_LRO_NAN 0x00 /* No flow exists */ 41#define TCP_LRO_CONSUMED 0x01 /* LRO consumed the packet */ 42#define TCP_LRO_EJECT_FLOW 0x02 /* LRO ejected the flow */ 43#define TCP_LRO_COALESCE 0x03 /* LRO to coalesce the packet */ 44#define TCP_LRO_COLLISION 0x04 /* Two flows map to the same slot */ 45 46void tcp_lro_init(void); 47 48/* When doing LRO in IP call this function */ 49struct mbuf* tcp_lro(struct mbuf *m, unsigned int hlen); 50 51/* TCP calls this to start coalescing a flow */ 52int tcp_start_coalescing(struct ip *, struct tcphdr *, int tlen); 53 54/* TCP calls this to stop coalescing a flow */ 55int tcp_lro_remove_state(struct in_addr, struct in_addr, unsigned short, 56 unsigned short); 57 58/* TCP calls this to keep the seq number updated */ 59void tcp_update_lro_seq(__uint32_t, struct in_addr, struct in_addr, 60 unsigned short, unsigned short); 61 62#endif 63 64#endif /* LRO_EXT_H_ */ 65