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Treat multicast transmissions as recyclable

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This commit is contained in:
Adam Dunkels 2015-03-24 11:56:31 +01:00
parent 269188846c
commit ba409cce57
1 changed files with 10 additions and 1 deletions
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11
core/net/ip64/ip64.c
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@ -585,7 +585,16 @@ ip64_6to4(const uint8_t *ipv6packet, const uint16_t ipv6packet_len,
} else {
ip64_addrmap_set_lifetime(m, DEFAULT_LIFETIME);
/* Treat DNS requests specially: since the are one-shot, we
/* Treat UDP packets from the IPv6 network to a multicast
address on the IPv4 network differently: since there is
no way for packets from the IPv4 network to go back to
the IPv6 network on these mappings, we'll mark them as
recyclable. */
if(v4hdr->destipaddr.u8[0] == 224) {
ip64_addrmap_set_recycleble(m);
}
/* Treat DNS requests differently: since the are one-shot, we
mark them as recyclable. */
if(udphdr->destport == UIP_HTONS(DNS_PORT)) {
ip64_addrmap_set_recycleble(m);