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/* SPDX-License-Identifier: LGPL-2.1-or-later
* Copyright © 2020 VMware, Inc. */
#include <linux/pkt_sched.h>
#include "alloc-util.h"
#include "conf-parser.h"
#include "hhf.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "string-util.h"
#include "util.h"
static int heavy_hitter_filter_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
HeavyHitterFilter *hhf;
int r;
assert(link);
assert(qdisc);
assert(req);
assert_se(hhf = HHF(qdisc));
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "hhf");
if (r < 0)
return r;
if (hhf->packet_limit > 0) {
r = sd_netlink_message_append_u32(req, TCA_HHF_BACKLOG_LIMIT, hhf->packet_limit);
if (r < 0)
return r;
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return r;
return 0;
}
int config_parse_heavy_hitter_filter_packet_limit(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
HeavyHitterFilter *hhf;
Network *network = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = qdisc_new_static(QDISC_KIND_HHF, network, filename, section_line, &qdisc);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"More than one kind of queueing discipline, ignoring assignment: %m");
return 0;
}
hhf = HHF(qdisc);
if (isempty(rvalue)) {
hhf->packet_limit = 0;
TAKE_PTR(qdisc);
return 0;
}
r = safe_atou32(rvalue, &hhf->packet_limit);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
TAKE_PTR(qdisc);
return 0;
}
const QDiscVTable hhf_vtable = {
.object_size = sizeof(HeavyHitterFilter),
.tca_kind = "hhf",
.fill_message = heavy_hitter_filter_fill_message,
};
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