bool TNlHtb::Valid(const TNlLink &link, uint32_t defaultClass) {
int ret;
struct nl_cache *qdiscCache;
bool valid = true;
ret = rtnl_qdisc_alloc_cache(link.GetSock(), &qdiscCache);
if (ret < 0) {
L_ERR() << "can't alloc qdisc cache" << std::endl;
return false;
}
struct rtnl_qdisc *qdisc = rtnl_qdisc_get(qdiscCache, link.GetIndex(), Handle);
if (qdisc) {
link.Dump("found", qdisc);
if (rtnl_tc_get_ifindex(TC_CAST(qdisc)) != link.GetIndex())
valid = false;
else if (rtnl_tc_get_parent(TC_CAST(qdisc)) != Parent)
valid = false;
else if (rtnl_tc_get_handle(TC_CAST(qdisc)) != Handle)
valid = false;
else if (rtnl_tc_get_kind(TC_CAST(qdisc)) != std::string("htb"))
valid = false;
else if (rtnl_htb_get_defcls(qdisc) != TC_H_MIN(defaultClass))
valid = false;
} else {
valid = false;
}
rtnl_qdisc_put(qdisc);
nl_cache_free(qdiscCache);
return valid;
}
bool TNlHtb::Exists(const TNlLink &link) {
int ret;
struct nl_cache *qdiscCache;
bool exists;
ret = rtnl_qdisc_alloc_cache(link.GetSock(), &qdiscCache);
if (ret < 0)
return false;
link.LogCache(qdiscCache);
struct rtnl_qdisc *qdisc = rtnl_qdisc_get(qdiscCache, link.GetIndex(), Handle);
exists = qdisc != nullptr;
rtnl_qdisc_put(qdisc);
nl_cache_free(qdiscCache);
return exists;
}
bool TNlQdisc::Check(const TNl &nl) {
struct nl_cache *qdiscCache;
bool result = false;
int ret;
ret = rtnl_qdisc_alloc_cache(nl.GetSock(), &qdiscCache);
if (ret < 0) {
L_ERR() << nl.Error(ret, "cannot alloc qdisc cache") << std::endl;
return false;
}
struct rtnl_qdisc *qdisc = rtnl_qdisc_get(qdiscCache, Index, Handle);
if (!qdisc) {
result = Kind == "";
goto out;
}
nl.Dump("found", qdisc);
if (rtnl_tc_get_ifindex(TC_CAST(qdisc)) != Index)
goto out;
if (rtnl_tc_get_parent(TC_CAST(qdisc)) != Parent)
goto out;
if (rtnl_tc_get_handle(TC_CAST(qdisc)) != Handle)
goto out;
if (rtnl_tc_get_kind(TC_CAST(qdisc)) != Kind)
goto out;
if (Kind == "htb") {
if (rtnl_htb_get_defcls(qdisc) != Default)
goto out;
}
result = true;
out:
rtnl_qdisc_put(qdisc);
nl_cache_free(qdiscCache);
return result;
}