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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 "drr.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "string-util.h"
const QDiscVTable drr_vtable = {
.object_size = sizeof(DeficitRoundRobinScheduler),
.tca_kind = "drr",
};
static int drr_class_fill_message(Link *link, TClass *tclass, sd_netlink_message *req) {
DeficitRoundRobinSchedulerClass *drr;
int r;
assert(link);
assert(tclass);
assert(req);
drr = TCLASS_TO_DRR(tclass);
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "drr");
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
if (drr->quantum > 0) {
r = sd_netlink_message_append_u32(req, TCA_DRR_QUANTUM, drr->quantum);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_DRR_QUANTUM, 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_drr_size(
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;
DeficitRoundRobinSchedulerClass *drr;
Network *network = data;
uint64_t u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = tclass_new_static(TCLASS_KIND_DRR, 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;
}
drr = TCLASS_TO_DRR(tclass);
if (isempty(rvalue)) {
drr->quantum = 0;
tclass = NULL;
return 0;
}
r = parse_size(rvalue, 1024, &u);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
if (u > UINT32_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid '%s=', ignoring assignment: %s",
lvalue, rvalue);
return 0;
}
drr->quantum = (uint32_t) u;
tclass = NULL;
return 0;
}
const TClassVTable drr_tclass_vtable = {
.object_size = sizeof(DeficitRoundRobinSchedulerClass),
.tca_kind = "drr",
.fill_message = drr_class_fill_message,
};
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