mi_node_t *
mi_tbl_add(EXTAP_DBG_PARM mi_node_t **root, u_int8_t *ip, u_int8_t *mac, int ipver)
{
int i, len = mi_ip_len(ipver);
mi_node_t *a;
/*
* Non unicast addresses should not be added. Since the
* addresses being added come from ARP request/response
* (for IPv4), or Neighbor Discovery/Advertisement
* (for IPv6) packets, the input need not be validated.
*/
if ((a = mi_tbl_lkup2(*root, ip, ipver)) != NULL) {
eadbg3("%s(%d): ignore dup " eamstr " for " eaistr "\n",
f, l, eamac(mac), eaip(ip));
return a;
}
for (i = 0; i < NUM_MITBL_ENTRIES; i++) {
if (mi_node_is_free(&mi_tbl[i])) {
OS_MEMCPY(mi_tbl[i].h_dest, mac, ETH_ALEN);
OS_MEMCPY(mi_tbl[i].ip, ip, len);
mi_tbl[i].ip_ver = ipver;
mi_tbl[i].len = len;
eadbg3("%s(%d): saving " eamstr " for " eaistr "\n",
f, l, eamac(mac), eaip(ip));
return &mi_tbl[i];
}
}
eadbg3("%s(%d): cant save " eamstr " for " eaistr "\n",
f, l, eamac(mac), eaip(ip));
return NULL;
}
u_int8_t *
mi_tbl_lkup(EXTAP_DBG_PARM mi_node_t *root, u_int8_t *ip, int ipver)
{
mi_node_t *a = mi_tbl_lkup2(root, ip, ipver);
if (a) {
return a->h_dest;
}
eadbg3("%s(%d): lkup failed for " eaistr "\n",
f, l, eaip(ip));
return NULL;
}
void
mi_tbl_del(EXTAP_DBG_PARM mi_node_t **root, u_int8_t *ip, int ipver)
{
mi_node_t *a = mi_tbl_lkup2(*root, ip, ipver);
if (a) {
mi_node_free(a);
eadbg3("%s(%d): deleting " eamstr " for " eaistr "\n",
f, l, eamac(a->h_dest), eaip(ip));
return;
}
eadbg3("%s(%d): delete failed for " eaistr "\n", f, l, eaip(ip));
return;
}