1/* 2 * Copyright (c) 1999-2013 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/* 30 * Support for socket filter kernel extensions 31 */ 32 33#ifndef NET_KEXT_NET_H 34#define NET_KEXT_NET_H 35 36#include <sys/appleapiopts.h> 37 38#include <sys/queue.h> 39#include <sys/cdefs.h> 40 41#ifdef BSD_KERNEL_PRIVATE 42/* 43 * Internal implementation bits 44 */ 45#include <sys/kpi_socketfilter.h> 46 47struct socket; 48struct sockopt; 49 50/* Private, internal implementation functions */ 51extern void sflt_init(void); 52extern void sflt_initsock(struct socket *so); 53extern void sflt_termsock(struct socket *so); 54extern errno_t sflt_attach_internal(struct socket *so, sflt_handle handle); 55extern void sflt_notify(struct socket *so, sflt_event_t event, void *param); 56extern int sflt_ioctl(struct socket *so, u_long cmd, caddr_t data); 57extern int sflt_bind(struct socket *so, const struct sockaddr *nam); 58extern int sflt_listen(struct socket *so); 59extern int sflt_accept(struct socket *head, struct socket *so, 60 const struct sockaddr *local, 61 const struct sockaddr *remote); 62extern int sflt_getsockname(struct socket *so, struct sockaddr **local); 63extern int sflt_getpeername(struct socket *so, struct sockaddr **remote); 64extern int sflt_connectin(struct socket *head, 65 const struct sockaddr *remote); 66extern int sflt_connectout(struct socket *so, const struct sockaddr *nam); 67extern int sflt_connectxout(struct socket *so, 68 struct sockaddr_list **nam_sl); 69extern int sflt_setsockopt(struct socket *so, struct sockopt *sopt); 70extern int sflt_getsockopt(struct socket *so, struct sockopt *sopt); 71extern int sflt_data_out(struct socket *so, const struct sockaddr *to, 72 mbuf_t *data, mbuf_t *control, sflt_data_flag_t flags); 73extern int sflt_data_in(struct socket *so, const struct sockaddr *from, 74 mbuf_t *data, mbuf_t *control, sflt_data_flag_t flags); 75 76#endif /* BSD_KERNEL_PRIVATE */ 77 78#define NFF_BEFORE 0x01 79#define NFF_AFTER 0x02 80 81#define NKE_OK 0 82#define NKE_REMOVE (-1) 83 84/* 85 * Interface structure for inserting an installed socket NKE into an 86 * existing socket. 87 * 'handle' is the NKE to be inserted, 'where' is an insertion point, 88 * and flags dictate the position of the to-be-inserted NKE relative to 89 * the 'where' NKE. If the latter is NULL, the flags indicate "first" 90 * or "last" 91 */ 92#pragma pack(4) 93 94struct so_nke { 95 unsigned int nke_handle; 96 unsigned int nke_where; 97 int nke_flags; /* NFF_BEFORE, NFF_AFTER: net/kext_net.h */ 98 u_int32_t reserved[4]; /* for future use */ 99}; 100 101#pragma pack() 102#endif /* NET_KEXT_NET_H */ 103