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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 "fifo.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "string-util.h"
static int fifo_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
struct tc_fifo_qopt opt = {};
FirstInFirstOut *fifo;
int r;
assert(link);
assert(qdisc);
assert(req);
switch(qdisc->kind) {
case QDISC_KIND_PFIFO:
fifo = PFIFO(qdisc);
break;
case QDISC_KIND_BFIFO:
fifo = BFIFO(qdisc);
break;
case QDISC_KIND_PFIFO_HEAD_DROP:
fifo = PFIFO_HEAD_DROP(qdisc);
break;
default:
assert_not_reached("Invalid QDisc kind.");
}
opt.limit = fifo->limit;
r = sd_netlink_message_append_data(req, TCA_OPTIONS, &opt, sizeof(struct tc_fifo_qopt));
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_OPTIONS attribute: %m");
return 0;
}
int config_parse_pfifo_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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
Network *network = data;
FirstInFirstOut *fifo;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(ltype, 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;
}
switch(qdisc->kind) {
case QDISC_KIND_PFIFO:
fifo = PFIFO(qdisc);
break;
case QDISC_KIND_PFIFO_HEAD_DROP:
fifo = PFIFO_HEAD_DROP(qdisc);
break;
default:
assert_not_reached("Invalid QDisc kind.");
}
if (isempty(rvalue)) {
fifo->limit = 0;
qdisc = NULL;
return 0;
}
r = safe_atou32(rvalue, &fifo->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_bfifo_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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
Network *network = data;
FirstInFirstOut *fifo;
uint64_t u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_BFIFO, 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;
}
fifo = BFIFO(qdisc);
if (isempty(rvalue)) {
fifo->limit = 0;
qdisc = 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;
}
fifo->limit = (uint32_t) u;
qdisc = NULL;
return 0;
}
const QDiscVTable pfifo_vtable = {
.object_size = sizeof(FirstInFirstOut),
.tca_kind = "pfifo",
.fill_message = fifo_fill_message,
};
const QDiscVTable bfifo_vtable = {
.object_size = sizeof(FirstInFirstOut),
.tca_kind = "bfifo",
.fill_message = fifo_fill_message,
};
const QDiscVTable pfifo_head_drop_vtable = {
.object_size = sizeof(FirstInFirstOut),
.tca_kind = "pfifo_head_drop",
.fill_message = fifo_fill_message,
};
const QDiscVTable pfifo_fast_vtable = {
.object_size = sizeof(FirstInFirstOut),
.tca_kind = "pfifo_fast",
};
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