static void list_class(struct nl_object *obj, void *arg)
{
struct rtnl_tc *tc = nl_object_priv(obj);
nl_object_dump(obj, ¶ms);
list_classes(rtnl_tc_get_ifindex(tc), rtnl_tc_get_handle(tc));
list_qdiscs(rtnl_tc_get_ifindex(tc), rtnl_tc_get_handle(tc));
}
static void delete_cb(struct nl_object *obj, void *arg)
{
struct rtnl_qdisc *qdisc = nl_object_priv(obj);
struct nl_dump_params params = {
.dp_type = NL_DUMP_LINE,
.dp_fd = stdout,
};
int err;
/* Ignore default qdiscs, unable to delete */
if (rtnl_tc_get_handle((struct rtnl_tc *) qdisc) == 0)
return;
if (interactive && !nl_cli_confirm(obj, ¶ms, default_yes))
return;
if ((err = rtnl_qdisc_delete(sock, qdisc)) < 0)
nl_cli_fatal(err, "Unable to delete qdisc: %s\n", nl_geterror(err));
if (!quiet) {
printf("Deleted ");
nl_object_dump(obj, ¶ms);
}
deleted++;
}
bool TNlCgFilter::Exists(const TNlLink &link) {
int ret;
struct nl_cache *clsCache;
ret = rtnl_cls_alloc_cache(link.GetSock(), link.GetIndex(), Parent, &clsCache);
if (ret < 0) {
L_ERR() << "Can't allocate filter cache: " << nl_geterror(ret) << std::endl;
return false;
}
link.LogCache(clsCache);
struct CgFilterIter {
uint32_t parent;
uint32_t handle;
bool exists;
} data = { Parent, Handle, false };
nl_cache_foreach(clsCache, [](struct nl_object *obj, void *data) {
CgFilterIter *p = (CgFilterIter *)data;
if (rtnl_tc_get_handle(TC_CAST(obj)) == p->handle &&
rtnl_tc_get_parent(TC_CAST(obj)) == p->parent)
p->exists = true;
}, &data);
nl_cache_free(clsCache);
return data.exists;
}
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;
}
static void list_qdisc(struct nl_object *obj, void *arg)
{
struct rtnl_qdisc *qdisc = nl_object_priv(obj);
struct rtnl_tc *tc = (struct rtnl_tc *) qdisc;
nl_object_dump(obj, ¶ms);
list_cls(rtnl_tc_get_ifindex(tc), rtnl_tc_get_handle(tc));
if (rtnl_tc_get_parent(tc) == TC_H_ROOT) {
list_cls(rtnl_tc_get_ifindex(tc), TC_H_ROOT);
list_classes(rtnl_tc_get_ifindex(tc), TC_H_ROOT);
}
list_classes(rtnl_tc_get_ifindex(tc), rtnl_tc_get_handle(tc));
}
static struct element *handle_tc_obj(struct rtnl_tc *tc, const char *prefix,
struct rdata *rdata)
{
char buf[IFNAME_MAX], name[IFNAME_MAX];
uint32_t id = rtnl_tc_get_handle(tc);
struct element *e;
rtnl_tc_handle2str(id, buf, sizeof(buf));
snprintf(name, sizeof(name), "%s %s (%s)",
prefix, buf, rtnl_tc_get_kind(tc));
if (!(e = element_lookup(grp, name, id, rdata ? rdata->parent : NULL, ELEMENT_CREAT)))
return NULL;
if (e->e_flags & ELEMENT_FLAG_CREATED) {
e->e_level = rdata ? rdata->level : 0;
if (element_set_key_attr(e, "tc_bytes", "tc_packets") ||
element_set_usage_attr(e, "tc_bytes"))
BUG();
update_tc_infos(e, tc);
e->e_flags &= ~ELEMENT_FLAG_CREATED;
}
update_tc_attrs(e, tc);
element_notify_update(e, NULL);
element_lifesign(e, 1);
return e;
}
Result<ingress::Discipline> decode<ingress::Discipline>(
const Netlink<struct rtnl_qdisc>& qdisc)
{
if (rtnl_tc_get_kind(TC_CAST(qdisc.get())) != string("ingress") ||
rtnl_tc_get_parent(TC_CAST(qdisc.get())) != INGRESS_ROOT.get() ||
rtnl_tc_get_handle(TC_CAST(qdisc.get())) != ingress::HANDLE.get()) {
return None();
}
return ingress::Discipline();
}
static void print_tc_childs(struct rtnl_tc *tc, void *arg)
{
struct rtnl_class *filter;
filter = nl_cli_class_alloc();
rtnl_tc_set_parent(TC_CAST(filter), rtnl_tc_get_handle(tc));
rtnl_tc_set_ifindex(TC_CAST(filter), rtnl_tc_get_ifindex(tc));
nl_cache_foreach_filter(class_cache, OBJ_CAST(filter), &print_class, arg);
rtnl_class_put(filter);
}
static void print_qdisc(struct nl_object *obj, void *arg)
{
struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj;
struct nl_cache *cls_cache;
uint32_t parent = rtnl_tc_get_handle((struct rtnl_tc *) qdisc);
params.dp_prefix = (int)(long) arg;
nl_object_dump(obj, ¶ms);
print_tc_childs(TC_CAST(qdisc), arg + 2);
if (rtnl_cls_alloc_cache(sock, ifindex, parent, &cls_cache) < 0)
return;
params.dp_prefix = (int)(long) arg + 2;
nl_cache_dump(cls_cache, ¶ms);
nl_cache_free(cls_cache);
}
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;
}
static void update_tc_infos(struct element *e, struct rtnl_tc *tc)
{
char buf[64];
snprintf(buf, sizeof(buf), "%u", rtnl_tc_get_mtu(tc));
element_update_info(e, "MTU", buf);
snprintf(buf, sizeof(buf), "%u", rtnl_tc_get_mpu(tc));
element_update_info(e, "MPU", buf);
snprintf(buf, sizeof(buf), "%u", rtnl_tc_get_overhead(tc));
element_update_info(e, "Overhead", buf);
snprintf(buf, sizeof(buf), "%#x", rtnl_tc_get_handle(tc));
element_update_info(e, "Id", buf);
snprintf(buf, sizeof(buf), "%#x", rtnl_tc_get_parent(tc));
element_update_info(e, "Parent", buf);
}
static void handle_class(struct nl_object *obj, void *arg)
{
struct rtnl_tc *tc = (struct rtnl_tc *) obj;
struct element *e;
struct rdata *rdata = arg;
struct rdata ndata = {
.level = rdata->level + 1,
};
if (!(e = handle_tc_obj(tc, "class", rdata)))
return;
ndata.parent = e;
if (!strcmp(rtnl_tc_get_kind(tc), "htb"))
element_set_txmax(e, rtnl_htb_get_rate((struct rtnl_class *) tc));
find_classes(rtnl_tc_get_handle(tc), &ndata);
find_qdiscs(rtnl_tc_get_handle(tc), &ndata);
}
static void find_qdiscs(uint32_t parent, struct rdata *rdata)
{
struct rtnl_qdisc *filter;
if (!(filter = rtnl_qdisc_alloc()))
return;
rtnl_tc_set_parent((struct rtnl_tc *) filter, parent);
nl_cache_foreach_filter(qdisc_cache, OBJ_CAST(filter),
handle_qdisc, rdata);
rtnl_qdisc_put(filter);
}
static void find_cls(int ifindex, uint32_t parent, struct rdata *rdata)
{
struct nl_cache *cls_cache;
if (rtnl_cls_alloc_cache(sock, ifindex, parent, &cls_cache) < 0)
return;
nl_cache_foreach(cls_cache, handle_cls, rdata);
nl_cache_free(cls_cache);
}
static void find_classes(uint32_t parent, struct rdata *rdata)
{
struct rtnl_class *filter;
if (!(filter = rtnl_class_alloc()))
return;
rtnl_tc_set_parent((struct rtnl_tc *) filter, parent);
nl_cache_foreach_filter(class_cache, OBJ_CAST(filter),
handle_class, rdata);
rtnl_class_put(filter);
}
static void handle_qdisc(struct nl_object *obj, void *arg)
{
struct rtnl_tc *tc = (struct rtnl_tc *) obj;
struct element *e;
struct rdata *rdata = arg;
struct rdata ndata = {
.level = rdata->level + 1,
};
if (!(e = handle_tc_obj(tc, "qdisc", rdata)))
return;
ndata.parent = e;
find_cls(rtnl_tc_get_ifindex(tc), rtnl_tc_get_handle(tc), &ndata);
if (rtnl_tc_get_parent(tc) == TC_H_ROOT) {
find_cls(rtnl_tc_get_ifindex(tc), TC_H_ROOT, &ndata);
find_classes(TC_H_ROOT, &ndata);
}
find_classes(rtnl_tc_get_handle(tc), &ndata);
}
static void handle_tc(struct element *e, struct rtnl_link *link)
{
struct rtnl_qdisc *qdisc;
int ifindex = rtnl_link_get_ifindex(link);
struct rdata rdata = {
.level = 1,
.parent = e,
};
if (rtnl_class_alloc_cache(sock, ifindex, &class_cache) < 0)
return;
qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_ROOT);
if (qdisc) {
handle_qdisc(OBJ_CAST(qdisc), &rdata);
rtnl_qdisc_put(qdisc);
}
qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, 0);
if (qdisc) {
handle_qdisc(OBJ_CAST(qdisc), &rdata);
rtnl_qdisc_put(qdisc);
}
qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_INGRESS);
if (qdisc) {
handle_qdisc(OBJ_CAST(qdisc), &rdata);
rtnl_qdisc_put(qdisc);
}
nl_cache_free(class_cache);
}
static void update_link_infos(struct element *e, struct rtnl_link *link)
{
char buf[64];
snprintf(buf, sizeof(buf), "%u", rtnl_link_get_mtu(link));
element_update_info(e, "MTU", buf);
rtnl_link_flags2str(rtnl_link_get_flags(link), buf, sizeof(buf));
element_update_info(e, "Flags", buf);
rtnl_link_operstate2str(rtnl_link_get_operstate(link),
buf, sizeof(buf));
element_update_info(e, "Operstate", buf);
snprintf(buf, sizeof(buf), "%u", rtnl_link_get_ifindex(link));
element_update_info(e, "IfIndex", buf);
nl_addr2str(rtnl_link_get_addr(link), buf, sizeof(buf));
element_update_info(e, "Address", buf);
nl_addr2str(rtnl_link_get_broadcast(link), buf, sizeof(buf));
element_update_info(e, "Broadcast", buf);
rtnl_link_mode2str(rtnl_link_get_linkmode(link),
buf, sizeof(buf));
element_update_info(e, "Mode", buf);
snprintf(buf, sizeof(buf), "%u", rtnl_link_get_txqlen(link));
element_update_info(e, "TXQlen", buf);
nl_af2str(rtnl_link_get_family(link), buf, sizeof(buf));
element_update_info(e, "Family", buf);
element_update_info(e, "Alias",
rtnl_link_get_ifalias(link) ? : "");
element_update_info(e, "Qdisc",
rtnl_link_get_qdisc(link) ? : "");
if (rtnl_link_get_link(link)) {
snprintf(buf, sizeof(buf), "%u", rtnl_link_get_link(link));
element_update_info(e, "SlaveOfIndex", buf);
}
}
static void do_link(struct nl_object *obj, void *arg)
{
struct rtnl_link *link = (struct rtnl_link *) obj;
struct element *e, *e_parent = NULL;
int i, master_ifindex;
if (!cfg_show_all && !(rtnl_link_get_flags(link) & IFF_UP)) {
/* FIXME: delete element */
return;
}
/* Check if the interface is a slave of another interface */
if ((master_ifindex = rtnl_link_get_link(link))) {
char parent[IFNAMSIZ+1];
rtnl_link_i2name(link_cache, master_ifindex,
parent, sizeof(parent));
e_parent = element_lookup(grp, parent, master_ifindex, NULL, 0);
}
if (!(e = element_lookup(grp, rtnl_link_get_name(link),
rtnl_link_get_ifindex(link), e_parent, ELEMENT_CREAT)))
return;
if (e->e_flags & ELEMENT_FLAG_CREATED) {
if (e->e_parent)
e->e_level = e->e_parent->e_level + 1;
if (element_set_key_attr(e, "bytes", "packets") ||
element_set_usage_attr(e, "bytes"))
BUG();
/* FIXME: Update link infos every 1s or so */
update_link_infos(e, link);
e->e_flags &= ~ELEMENT_FLAG_CREATED;
}
for (i = 0; i < ARRAY_SIZE(link_attrs); i++) {
struct attr_map *m = &link_attrs[i];
uint64_t c_rx = 0, c_tx = 0;
int flags = 0;
if (m->rxid >= 0) {
c_rx = rtnl_link_get_stat(link, m->rxid);
flags |= UPDATE_FLAG_RX;
}
if (m->txid >= 0) {
c_tx = rtnl_link_get_stat(link, m->txid);
flags |= UPDATE_FLAG_TX;
}
attr_update(e, m->attrid, c_rx, c_tx, flags);
}
if (!c_notc)
handle_tc(e, link);
element_notify_update(e, NULL);
element_lifesign(e, 1);
}
static void netlink_read(void)
{
int err;
if ((err = nl_cache_resync(sock, link_cache, NULL, NULL)) < 0) {
fprintf(stderr, "Unable to resync link cache: %s\n", nl_geterror(err));
goto disable;
}
if ((err = nl_cache_resync(sock, qdisc_cache, NULL, NULL)) < 0) {
fprintf(stderr, "Unable to resync qdisc cache: %s\n", nl_geterror(err));
goto disable;
}
nl_cache_foreach(link_cache, do_link, NULL);
return;
disable:
netlink_ops.m_flags &= ~BMON_MODULE_ENABLED;
}
static void netlink_shutdown(void)
{
nl_cache_free(link_cache);
nl_cache_free(qdisc_cache);
nl_socket_free(sock);
}