diff options
Diffstat (limited to 'slirp/src/ip6.h')
| m--------- | slirp | 0 | ||||
| -rw-r--r-- | slirp/src/ip6.h | 160 |
2 files changed, 0 insertions, 160 deletions
diff --git a/slirp b/slirp new file mode 160000 +Subproject 59a1b1f165458c2acb7ff0525b543945f741622 diff --git a/slirp/src/ip6.h b/slirp/src/ip6.h deleted file mode 100644 index 33683c8e20..0000000000 --- a/slirp/src/ip6.h +++ /dev/null @@ -1,160 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#ifndef SLIRP_IP6_H -#define SLIRP_IP6_H - -#include <glib.h> -#include <string.h> - -#define ALLNODES_MULTICAST { .s6_addr = \ - { 0xff, 0x02, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x01 } } - -#define SOLICITED_NODE_PREFIX { .s6_addr = \ - { 0xff, 0x02, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x01,\ - 0xff, 0x00, 0x00, 0x00 } } - -#define LINKLOCAL_ADDR { .s6_addr = \ - { 0xfe, 0x80, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x02 } } - -#define ZERO_ADDR { .s6_addr = \ - { 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00 } } - -static inline bool in6_equal(const struct in6_addr *a, const struct in6_addr *b) -{ - return memcmp(a, b, sizeof(*a)) == 0; -} - -static inline bool in6_equal_net(const struct in6_addr *a, - const struct in6_addr *b, - int prefix_len) -{ - if (memcmp(a, b, prefix_len / 8) != 0) { - return 0; - } - - if (prefix_len % 8 == 0) { - return 1; - } - - return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)) - == b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)); -} - -static inline bool in6_equal_mach(const struct in6_addr *a, - const struct in6_addr *b, - int prefix_len) -{ - if (memcmp(&(a->s6_addr[DIV_ROUND_UP(prefix_len, 8)]), - &(b->s6_addr[DIV_ROUND_UP(prefix_len, 8)]), - 16 - DIV_ROUND_UP(prefix_len, 8)) != 0) { - return 0; - } - - if (prefix_len % 8 == 0) { - return 1; - } - - return (a->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1)) - == (b->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1)); -} - - -#define in6_equal_router(a)\ - ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\ - && in6_equal_mach(a, &slirp->vhost_addr6, slirp->vprefix_len))\ - || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\ - && in6_equal_mach(a, &slirp->vhost_addr6, 64))) - -#define in6_equal_dns(a)\ - ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\ - && in6_equal_mach(a, &slirp->vnameserver_addr6, slirp->vprefix_len))\ - || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\ - && in6_equal_mach(a, &slirp->vnameserver_addr6, 64))) - -#define in6_equal_host(a)\ - (in6_equal_router(a) || in6_equal_dns(a)) - -#define in6_solicitednode_multicast(a)\ - (in6_equal_net(a, &(struct in6_addr)SOLICITED_NODE_PREFIX, 104)) - -#define in6_zero(a)\ - (in6_equal(a, &(struct in6_addr)ZERO_ADDR)) - -/* Compute emulated host MAC address from its ipv6 address */ -static inline void in6_compute_ethaddr(struct in6_addr ip, - uint8_t eth[ETH_ALEN]) -{ - eth[0] = 0x52; - eth[1] = 0x56; - memcpy(ð[2], &ip.s6_addr[16 - (ETH_ALEN - 2)], ETH_ALEN - 2); -} - -/* - * Definitions for internet protocol version 6. - * Per RFC 2460, December 1998. - */ -#define IP6VERSION 6 -#define IP6_HOP_LIMIT 255 - -/* - * Structure of an internet header, naked of options. - */ -struct ip6 { -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint32_t - ip_v:4, /* version */ - ip_tc_hi:4, /* traffic class */ - ip_tc_lo:4, - ip_fl_hi:4, /* flow label */ - ip_fl_lo:16; -#else - uint32_t - ip_tc_hi:4, - ip_v:4, - ip_fl_hi:4, - ip_tc_lo:4, - ip_fl_lo:16; -#endif - uint16_t ip_pl; /* payload length */ - uint8_t ip_nh; /* next header */ - uint8_t ip_hl; /* hop limit */ - struct in6_addr ip_src, ip_dst; /* source and dest address */ -}; - -/* - * IPv6 pseudo-header used by upper-layer protocols - */ -struct ip6_pseudohdr { - struct in6_addr ih_src; /* source internet address */ - struct in6_addr ih_dst; /* destination internet address */ - uint32_t ih_pl; /* upper-layer packet length */ - uint16_t ih_zero_hi; /* zero */ - uint8_t ih_zero_lo; /* zero */ - uint8_t ih_nh; /* next header */ -}; - -/* - * We don't want to mark these ip6 structs as packed as they are naturally - * correctly aligned; instead assert that there is no stray padding. - * If we marked the struct as packed then we would be unable to take - * the address of any of the fields in it. - */ -G_STATIC_ASSERT(sizeof(struct ip6) == 40); -G_STATIC_ASSERT(sizeof(struct ip6_pseudohdr) == 40); - -#endif |