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https://gitlab.nic.cz/labs/bird.git
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d7661fbe9d
Explicit setting of AF_INET(6|) in IP socket creation. BFD set to listen on v6, without setting the V6ONLY flag to catch both v4 and v6 traffic. Squashing and minor changes by Ondrej Santiago Zajicek
110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
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#include "nest/bird.h"
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#include "lib/ip.h"
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#include "lib/net.h"
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const u16 net_addr_length[] = {
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[NET_IP4] = sizeof(net_addr_ip4),
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[NET_IP6] = sizeof(net_addr_ip6),
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[NET_VPN4] = sizeof(net_addr_vpn4),
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[NET_VPN6] = sizeof(net_addr_vpn6)
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};
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const u8 net_max_prefix_length[] = {
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[NET_IP4] = IP4_MAX_PREFIX_LENGTH,
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[NET_IP6] = IP6_MAX_PREFIX_LENGTH,
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[NET_VPN4] = IP4_MAX_PREFIX_LENGTH,
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[NET_VPN6] = IP4_MAX_PREFIX_LENGTH
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};
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int
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net_format(const net_addr *N, char *buf, int buflen)
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{
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net_addr_union *n = (void *) N;
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/* FIXME: quick hack */
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switch (n->n.type)
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{
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case NET_IP4:
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return bsnprintf(buf, buflen, "%I/%d", n->ip4.prefix, n->ip4.pxlen);
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case NET_IP6:
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return bsnprintf(buf, buflen, "%I/%d", n->ip6.prefix, n->ip6.pxlen);
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case NET_VPN4:
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return bsnprintf(buf, buflen, "%u:%u %I/%d", (u32) (n->vpn4.rd >> 32), (u32) n->vpn4.rd, n->vpn4.prefix, n->vpn4.pxlen);
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case NET_VPN6:
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return bsnprintf(buf, buflen, "%u:%u %I/%d", (u32) (n->vpn6.rd >> 32), (u32) n->vpn6.rd, n->vpn6.prefix, n->vpn6.pxlen);
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}
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return 0;
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}
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ip_addr
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net_pxmask(const net_addr *a)
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{
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switch (a->type)
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{
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case NET_IP4:
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case NET_VPN4:
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return ipa_from_ip4(ip4_mkmask(net4_pxlen(a)));
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case NET_IP6:
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case NET_VPN6:
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return ipa_from_ip6(ip6_mkmask(net6_pxlen(a)));
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default:
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return IPA_NONE;
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}
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}
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static inline int net_validate_ip4(const net_addr_ip4 *n)
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{
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return (n->pxlen <= IP4_MAX_PREFIX_LENGTH) &&
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ip4_zero(ip4_and(n->prefix, ip4_not(ip4_mkmask(n->pxlen))));
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}
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static inline int net_validate_ip6(const net_addr_ip6 *n)
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{
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return (n->pxlen <= IP6_MAX_PREFIX_LENGTH) &&
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ip6_zero(ip6_and(n->prefix, ip6_not(ip6_mkmask(n->pxlen))));
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}
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int
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net_validate(const net_addr *N)
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{
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switch (a->type)
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{
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case NET_IP4:
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case NET_VPN4:
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return net_validate_ip4((net_addr_ip4 *) N);
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case NET_IP6:
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case NET_VPN6:
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return net_validate_ip6((net_addr_ip6 *) N);
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default:
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return 0;
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}
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}
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int
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net_classify(const net_addr *N)
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{
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net_addr_union *n = (void *) N;
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switch (n->n.type)
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{
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case NET_IP4:
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case NET_VPN4:
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return ip4_zero(n->ip4.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip4_classify(n->ip4.prefix);
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case NET_IP6:
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case NET_VPN6:
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return ip6_zero(n->ip6.prefix) ? (IADDR_HOST | SCOPE_UNIVERSE) : ip6_classify(&n->ip6.prefix);
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}
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return 0;
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}
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