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 | |
36 | extern int sw_lro; |
37 | extern int lrodebug; |
38 | extern unsigned int coalesc_sz; |
39 | |
40 | /* flow return values */ |
41 | #define TCP_LRO_NAN 0x00 /* No flow exists */ |
42 | #define TCP_LRO_CONSUMED 0x01 /* LRO consumed the packet */ |
43 | #define TCP_LRO_EJECT_FLOW 0x02 /* LRO ejected the flow */ |
44 | #define TCP_LRO_COALESCE 0x03 /* LRO to coalesce the packet */ |
45 | #define TCP_LRO_COLLISION 0x04 /* Two flows map to the same slot */ |
46 | |
47 | void tcp_lro_init(void); |
48 | |
49 | /* When doing LRO in IP call this function */ |
50 | struct mbuf* tcp_lro(struct mbuf *m, unsigned int hlen); |
51 | |
52 | /* TCP calls this to start coalescing a flow */ |
53 | int tcp_start_coalescing(struct ip *, struct tcphdr *, int tlen); |
54 | |
55 | /* TCP calls this to stop coalescing a flow */ |
56 | int tcp_lro_remove_state(struct in_addr, struct in_addr, unsigned short, |
57 | unsigned short); |
58 | |
59 | /* TCP calls this to keep the seq number updated */ |
60 | void tcp_update_lro_seq(__uint32_t, struct in_addr, struct in_addr, |
61 | unsigned short, unsigned short); |
62 | |
63 | #endif |
64 | |
65 | #endif /* LRO_EXT_H_ */ |
66 | |