mirror of
https://github.com/qemu/qemu.git
synced 2024-12-02 00:03:35 +08:00
1120fae0cf
Host: Mac OS 10.12.5
Compiler: Apple LLVM version 8.1.0 (clang-802.0.42)
slirp/ip6_icmp.c:80:38: warning: taking address of packed member 'ip_src' of class or
structure 'ip6' may result in an unaligned pointer value
[-Waddress-of-packed-member]
IN6_IS_ADDR_UNSPECIFIED(&ip->ip_src)) {
^~~~~~~~~~
/usr/include/netinet6/in6.h:238:42: note: expanded from macro 'IN6_IS_ADDR_UNSPECIFIED'
((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
^
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2013
|
|
* Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "slirp.h"
|
|
|
|
void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
|
|
uint8_t ethaddr[ETH_ALEN])
|
|
{
|
|
NdpTable *ndp_table = &slirp->ndp_table;
|
|
int i;
|
|
|
|
DEBUG_CALL("ndp_table_add");
|
|
#if !defined(_WIN32) || (_WIN32_WINNT >= 0x0600)
|
|
char addrstr[INET6_ADDRSTRLEN];
|
|
inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
|
|
DEBUG_ARG("ip = %s", addrstr);
|
|
#endif
|
|
DEBUG_ARGS((dfd, " hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
ethaddr[0], ethaddr[1], ethaddr[2],
|
|
ethaddr[3], ethaddr[4], ethaddr[5]));
|
|
|
|
if (IN6_IS_ADDR_MULTICAST(&ip_addr) || in6_zero(&ip_addr)) {
|
|
/* Do not register multicast or unspecified addresses */
|
|
DEBUG_CALL(" abort: do not register multicast or unspecified address");
|
|
return;
|
|
}
|
|
|
|
/* Search for an entry */
|
|
for (i = 0; i < NDP_TABLE_SIZE; i++) {
|
|
if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
|
|
DEBUG_CALL(" already in table: update the entry");
|
|
/* Update the entry */
|
|
memcpy(ndp_table->table[i].eth_addr, ethaddr, ETH_ALEN);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* No entry found, create a new one */
|
|
DEBUG_CALL(" create new entry");
|
|
ndp_table->table[ndp_table->next_victim].ip_addr = ip_addr;
|
|
memcpy(ndp_table->table[ndp_table->next_victim].eth_addr,
|
|
ethaddr, ETH_ALEN);
|
|
ndp_table->next_victim = (ndp_table->next_victim + 1) % NDP_TABLE_SIZE;
|
|
}
|
|
|
|
bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
|
|
uint8_t out_ethaddr[ETH_ALEN])
|
|
{
|
|
NdpTable *ndp_table = &slirp->ndp_table;
|
|
int i;
|
|
|
|
DEBUG_CALL("ndp_table_search");
|
|
#if !defined(_WIN32) || (_WIN32_WINNT >= 0x0600)
|
|
char addrstr[INET6_ADDRSTRLEN];
|
|
inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN);
|
|
DEBUG_ARG("ip = %s", addrstr);
|
|
#endif
|
|
|
|
assert(!in6_zero(&ip_addr));
|
|
|
|
/* Multicast address: fec0::abcd:efgh/8 -> 33:33:ab:cd:ef:gh */
|
|
if (IN6_IS_ADDR_MULTICAST(&ip_addr)) {
|
|
out_ethaddr[0] = 0x33; out_ethaddr[1] = 0x33;
|
|
out_ethaddr[2] = ip_addr.s6_addr[12];
|
|
out_ethaddr[3] = ip_addr.s6_addr[13];
|
|
out_ethaddr[4] = ip_addr.s6_addr[14];
|
|
out_ethaddr[5] = ip_addr.s6_addr[15];
|
|
DEBUG_ARGS((dfd, " multicast addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
|
|
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]));
|
|
return 1;
|
|
}
|
|
|
|
for (i = 0; i < NDP_TABLE_SIZE; i++) {
|
|
if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
|
|
memcpy(out_ethaddr, ndp_table->table[i].eth_addr, ETH_ALEN);
|
|
DEBUG_ARGS((dfd, " found hw addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
out_ethaddr[0], out_ethaddr[1], out_ethaddr[2],
|
|
out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
DEBUG_CALL(" ip not found in table");
|
|
return 0;
|
|
}
|