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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 "cake.h"
#include "conf-parser.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "qdisc.h"
#include "string-util.h"
static int cake_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
CommonApplicationsKeptEnhanced *c;
int r;
assert(link);
assert(qdisc);
assert(req);
c = CAKE(qdisc);
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "cake");
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
if (c->bandwidth > 0) {
r = sd_netlink_message_append_u64(req, TCA_CAKE_BASE_RATE64, c->bandwidth);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CAKE_BASE_RATE64 attribute: %m");
}
r = sd_netlink_message_append_s32(req, TCA_CAKE_OVERHEAD, c->overhead);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CAKE_OVERHEAD attribute: %m");
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close container TCA_OPTIONS: %m");
return 0;
}
int config_parse_cake_bandwidth(
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;
CommonApplicationsKeptEnhanced *c;
Network *network = data;
uint64_t k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_CAKE, 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;
}
c = CAKE(qdisc);
if (isempty(rvalue)) {
c->bandwidth = 0;
qdisc = NULL;
return 0;
}
r = parse_size(rvalue, 1000, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
c->bandwidth = k/8;
qdisc = NULL;
return 0;
}
int config_parse_cake_overhead(
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;
CommonApplicationsKeptEnhanced *c;
Network *network = data;
int32_t v;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_CAKE, 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;
}
c = CAKE(qdisc);
if (isempty(rvalue)) {
c->overhead = 0;
qdisc = NULL;
return 0;
}
r = safe_atoi32(rvalue, &v);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
if (v < -64 || v > 256) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
c->overhead = v;
qdisc = NULL;
return 0;
}
const QDiscVTable cake_vtable = {
.object_size = sizeof(CommonApplicationsKeptEnhanced),
.tca_kind = "cake",
.fill_message = cake_fill_message,
};
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