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87 lines
3.5 KiB
C
87 lines
3.5 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_NET_UTIL_H
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#define QEMU_NET_UTIL_H
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/*
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* Structure of an internet header, naked of options.
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*/
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struct ip {
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#if HOST_BIG_ENDIAN
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uint8_t ip_v:4, /* version */
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ip_hl:4; /* header length */
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#else
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uint8_t ip_hl:4, /* header length */
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ip_v:4; /* version */
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#endif
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uint8_t ip_tos; /* type of service */
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uint16_t ip_len; /* total length */
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uint16_t ip_id; /* identification */
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uint16_t ip_off; /* fragment offset field */
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#define IP_DF 0x4000 /* don't fragment flag */
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#define IP_MF 0x2000 /* more fragments flag */
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#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
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uint8_t ip_ttl; /* time to live */
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uint8_t ip_p; /* protocol */
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uint16_t ip_sum; /* checksum */
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struct in_addr ip_src, ip_dst; /* source and dest address */
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} QEMU_PACKED;
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static inline bool in6_equal_net(const struct in6_addr *a,
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const struct in6_addr *b,
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int prefix_len)
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{
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if (memcmp(a, b, prefix_len / 8) != 0) {
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return 0;
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}
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if (prefix_len % 8 == 0) {
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return 1;
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}
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return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8))
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== b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8));
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}
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#define TCPS_CLOSED 0 /* closed */
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#define TCPS_LISTEN 1 /* listening for connection */
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#define TCPS_SYN_SENT 2 /* active, have sent syn */
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#define TCPS_SYN_RECEIVED 3 /* have send and received syn */
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/* states < TCPS_ESTABLISHED are those where connections not established */
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#define TCPS_ESTABLISHED 4 /* established */
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#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
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/* states > TCPS_CLOSE_WAIT are those where user has closed */
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#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
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#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
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#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
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/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
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#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
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#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
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int net_parse_macaddr(uint8_t *macaddr, const char *p);
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#endif /* QEMU_NET_UTIL_H */
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