| 1 | /*- |
| 2 | * SPDX-License-Identifier: BSD-3-Clause |
| 3 | * |
| 4 | * Copyright (c) 2003 Sam Leffler, Errno Consulting |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer, |
| 12 | * without modification. |
| 13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 14 | * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any |
| 15 | * redistribution must be conditioned upon including a substantially |
| 16 | * similar Disclaimer requirement for further binary redistribution. |
| 17 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 18 | * of any contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific prior written permission. |
| 20 | * |
| 21 | * NO WARRANTY |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 23 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 24 | * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY |
| 25 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| 26 | * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, |
| 27 | * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| 30 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 32 | * THE POSSIBILITY OF SUCH DAMAGES. |
| 33 | */ |
| 34 | |
| 35 | #ifndef _NETINET_IP_DIVERT_H_ |
| 36 | #define _NETINET_IP_DIVERT_H_ |
| 37 | #include <sys/types.h> |
| 38 | |
| 39 | /* |
| 40 | * All communication occurs through a sockaddr_in socket where |
| 41 | * |
| 42 | * kernel-->userland |
| 43 | * sin_port = matching rule, host format; |
| 44 | * sin_addr = IN: first address of the incoming interface; |
| 45 | * OUT: INADDR_ANY |
| 46 | * sin_zero = if fits, the interface name (max 7 bytes + NUL) |
| 47 | * |
| 48 | * userland->kernel |
| 49 | * sin_port = restart-rule - 1, host order |
| 50 | * (we restart at sin_port + 1) |
| 51 | * sin_addr = IN: address of the incoming interface; |
| 52 | * OUT: INADDR_ANY |
| 53 | */ |
| 54 | |
| 55 | struct divstat { |
| 56 | uint64_t div_diverted; /* successfully diverted to userland */ |
| 57 | uint64_t div_noport; /* failed due to no bound socket */ |
| 58 | uint64_t div_outbound; /* re-injected as outbound */ |
| 59 | uint64_t div_inbound; /* re-injected as inbound */ |
| 60 | }; |
| 61 | #endif /* _NETINET_IP_DIVERT_H_ */ |