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/* SPDX-License-Identifier: LGPL-2.1-or-later
* Copyright © 2020 VMware, Inc. */
#include <linux/pkt_sched.h>
#include "parse-util.h"
#include "qdisc.h"
#include "qfq.h"
#include "string-util.h"
#define QFQ_MAX_WEIGHT (1 << 10)
#define QFQ_MIN_MAX_PACKET 512
#define QFQ_MAX_MAX_PACKET (1 << 16)
const QDiscVTable qfq_vtable = {
.object_size = sizeof(QuickFairQueueing),
.tca_kind = "qfq",
};
static int quick_fair_queueing_class_fill_message(Link *link, TClass *tclass, sd_netlink_message *req) {
QuickFairQueueingClass *qfq;
int r;
assert(link);
assert(tclass);
assert(req);
qfq = TCLASS_TO_QFQ(tclass);
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "qfq");
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
if (qfq->weight > 0) {
r = sd_netlink_message_append_u32(req, TCA_QFQ_WEIGHT, qfq->weight);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_QFQ_WEIGHT attribute: %m");
}
if (qfq->max_packet > 0) {
r = sd_netlink_message_append_u32(req, TCA_QFQ_LMAX, qfq->max_packet);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_QFQ_LMAX 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_quick_fair_queueing_weight(
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_(tclass_free_or_set_invalidp) TClass *tclass = NULL;
QuickFairQueueingClass *qfq;
Network *network = data;
uint32_t v;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = tclass_new_static(TCLASS_KIND_QFQ, network, filename, section_line, &tclass);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to create traffic control class, ignoring assignment: %m");
return 0;
}
qfq = TCLASS_TO_QFQ(tclass);
if (isempty(rvalue)) {
qfq->weight = 0;
tclass = NULL;
return 0;
}
r = safe_atou32(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 == 0 || v > QFQ_MAX_WEIGHT) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
qfq->weight = v;
tclass = NULL;
return 0;
}
int config_parse_quick_fair_queueing_max_packet(
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_(tclass_free_or_set_invalidp) TClass *tclass = NULL;
QuickFairQueueingClass *qfq;
Network *network = data;
uint64_t v;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = tclass_new_static(TCLASS_KIND_QFQ, network, filename, section_line, &tclass);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to create traffic control class, ignoring assignment: %m");
return 0;
}
qfq = TCLASS_TO_QFQ(tclass);
if (isempty(rvalue)) {
qfq->max_packet = 0;
tclass = NULL;
return 0;
}
r = parse_size(rvalue, 1024, &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 < QFQ_MIN_MAX_PACKET || v > QFQ_MAX_MAX_PACKET) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
qfq->max_packet = (uint32_t) v;
tclass = NULL;
return 0;
}
const TClassVTable qfq_tclass_vtable = {
.object_size = sizeof(QuickFairQueueingClass),
.tca_kind = "qfq",
.fill_message = quick_fair_queueing_class_fill_message,
};
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