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/* SPDX-License-Identifier: LGPL-2.1+
* Copyright © 2019 VMware, Inc. */
#include <linux/pkt_sched.h>
#include "alloc-util.h"
#include "conf-parser.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "qdisc.h"
#include "string-util.h"
static int controlled_delay_init(QDisc *qdisc) {
ControlledDelay *cd;
assert(qdisc);
cd = CODEL(qdisc);
cd->ce_threshold_usec = USEC_INFINITY;
cd->ecn = -1;
return 0;
}
static int controlled_delay_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
ControlledDelay *cd;
int r;
assert(link);
assert(qdisc);
assert(req);
cd = CODEL(qdisc);
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "codel");
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
if (cd->packet_limit > 0) {
r = sd_netlink_message_append_u32(req, TCA_CODEL_LIMIT, cd->packet_limit);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CODEL_LIMIT attribute: %m");
}
if (cd->interval_usec > 0) {
r = sd_netlink_message_append_u32(req, TCA_CODEL_INTERVAL, cd->interval_usec);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CODEL_INTERVAL attribute: %m");
}
if (cd->target_usec > 0) {
r = sd_netlink_message_append_u32(req, TCA_CODEL_TARGET, cd->target_usec);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CODEL_TARGET attribute: %m");
}
if (cd->ecn >= 0) {
r = sd_netlink_message_append_u32(req, TCA_CODEL_ECN, cd->ecn);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CODEL_ECN attribute: %m");
}
if (cd->ce_threshold_usec != USEC_INFINITY) {
r = sd_netlink_message_append_u32(req, TCA_CODEL_CE_THRESHOLD, cd->ce_threshold_usec);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_CODEL_CE_THRESHOLD 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_controlled_delay_u32(
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;
ControlledDelay *cd;
Network *network = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_CODEL, 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;
}
cd = CODEL(qdisc);
if (isempty(rvalue)) {
cd->packet_limit = 0;
qdisc = NULL;
return 0;
}
r = safe_atou32(rvalue, &cd->packet_limit);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
qdisc = NULL;
return 0;
}
int config_parse_controlled_delay_usec(
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;
ControlledDelay *cd;
Network *network = data;
usec_t *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_CODEL, 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;
}
cd = CODEL(qdisc);
if (streq(lvalue, "TargetSec"))
p = &cd->target_usec;
else if (streq(lvalue, "IntervalSec"))
p = &cd->interval_usec;
else if (streq(lvalue, "CEThresholdSec"))
p = &cd->ce_threshold_usec;
else
assert_not_reached("Invalid lvalue");
if (isempty(rvalue)) {
if (streq(lvalue, "CEThresholdSec"))
*p = USEC_INFINITY;
else
*p = 0;
qdisc = NULL;
return 0;
}
r = parse_sec(rvalue, p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
qdisc = NULL;
return 0;
}
int config_parse_controlled_delay_bool(
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;
ControlledDelay *cd;
Network *network = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_CODEL, 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;
}
cd = CODEL(qdisc);
if (isempty(rvalue)) {
cd->ecn = -1;
qdisc = NULL;
return 0;
}
r = parse_boolean(rvalue);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
cd->ecn = r;
qdisc = NULL;
return 0;
}
const QDiscVTable codel_vtable = {
.object_size = sizeof(ControlledDelay),
.tca_kind = "codel",
.init = controlled_delay_init,
.fill_message = controlled_delay_fill_message,
};
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