Mark McLoughlin | f1d078c | 2009-11-25 18:49:27 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #ifndef QEMU_NET_UTIL_H |
| 26 | #define QEMU_NET_UTIL_H |
| 27 | |
Mark McLoughlin | f1d078c | 2009-11-25 18:49:27 +0000 | [diff] [blame] | 28 | |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 29 | /* |
| 30 | * Structure of an internet header, naked of options. |
| 31 | */ |
| 32 | struct ip { |
Marc-André Lureau | e03b568 | 2022-03-23 19:57:17 +0400 | [diff] [blame] | 33 | #if HOST_BIG_ENDIAN |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 34 | uint8_t ip_v:4, /* version */ |
| 35 | ip_hl:4; /* header length */ |
| 36 | #else |
| 37 | uint8_t ip_hl:4, /* header length */ |
| 38 | ip_v:4; /* version */ |
| 39 | #endif |
| 40 | uint8_t ip_tos; /* type of service */ |
| 41 | uint16_t ip_len; /* total length */ |
| 42 | uint16_t ip_id; /* identification */ |
| 43 | uint16_t ip_off; /* fragment offset field */ |
| 44 | #define IP_DF 0x4000 /* don't fragment flag */ |
| 45 | #define IP_MF 0x2000 /* more fragments flag */ |
| 46 | #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ |
| 47 | uint8_t ip_ttl; /* time to live */ |
| 48 | uint8_t ip_p; /* protocol */ |
| 49 | uint16_t ip_sum; /* checksum */ |
| 50 | struct in_addr ip_src, ip_dst; /* source and dest address */ |
| 51 | } QEMU_PACKED; |
| 52 | |
| 53 | static inline bool in6_equal_net(const struct in6_addr *a, |
| 54 | const struct in6_addr *b, |
| 55 | int prefix_len) |
| 56 | { |
| 57 | if (memcmp(a, b, prefix_len / 8) != 0) { |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | if (prefix_len % 8 == 0) { |
| 62 | return 1; |
| 63 | } |
| 64 | |
| 65 | return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)) |
| 66 | == b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)); |
| 67 | } |
| 68 | |
| 69 | #define TCPS_CLOSED 0 /* closed */ |
| 70 | #define TCPS_LISTEN 1 /* listening for connection */ |
| 71 | #define TCPS_SYN_SENT 2 /* active, have sent syn */ |
| 72 | #define TCPS_SYN_RECEIVED 3 /* have send and received syn */ |
| 73 | /* states < TCPS_ESTABLISHED are those where connections not established */ |
| 74 | #define TCPS_ESTABLISHED 4 /* established */ |
| 75 | #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ |
| 76 | /* states > TCPS_CLOSE_WAIT are those where user has closed */ |
| 77 | #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ |
| 78 | #define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ |
| 79 | #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ |
| 80 | /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ |
| 81 | #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ |
| 82 | #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ |
| 83 | |
Mark McLoughlin | f1d078c | 2009-11-25 18:49:27 +0000 | [diff] [blame] | 84 | int net_parse_macaddr(uint8_t *macaddr, const char *p); |
| 85 | |
| 86 | #endif /* QEMU_NET_UTIL_H */ |