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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <linux/pkt_sched.h>
#include "alloc-util.h"
#include "conf-parser.h"
#include "ets.h"
#include "memory-util.h"
#include "netlink-util.h"
#include "parse-util.h"
#include "qdisc.h"
#include "string-util.h"
#include "tc-util.h"
static int enhanced_transmission_selection_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
EnhancedTransmissionSelection *ets;
int r;
assert(link);
assert(qdisc);
assert(req);
ets = ETS(qdisc);
r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "ets");
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
r = sd_netlink_message_append_u8(req, TCA_ETS_NBANDS, ets->n_bands);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_ETS_NBANDS attribute: %m");
if (ets->n_strict > 0) {
r = sd_netlink_message_append_u8(req, TCA_ETS_NSTRICT, ets->n_strict);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_ETS_NSTRICT attribute: %m");
}
if (ets->n_quanta > 0) {
r = sd_netlink_message_open_container(req, TCA_ETS_QUANTA);
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_ETS_QUANTA: %m");
for (unsigned i = 0; i < ets->n_quanta; i++) {
r = sd_netlink_message_append_u32(req, TCA_ETS_QUANTA_BAND, ets->quanta[i]);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_ETS_QUANTA_BAND attribute: %m");
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close container TCA_ETS_QUANTA: %m");
}
if (ets->n_prio > 0) {
r = sd_netlink_message_open_container(req, TCA_ETS_PRIOMAP);
if (r < 0)
return log_link_error_errno(link, r, "Could not open container TCA_ETS_PRIOMAP: %m");
for (unsigned i = 0; i < ets->n_prio; i++) {
r = sd_netlink_message_append_u8(req, TCA_ETS_PRIOMAP_BAND, ets->prio[i]);
if (r < 0)
return log_link_error_errno(link, r, "Could not append TCA_ETS_PRIOMAP_BAND attribute: %m");
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close container TCA_ETS_PRIOMAP: %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_ets_u8(
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;
EnhancedTransmissionSelection *ets;
Network *network = data;
uint8_t v, *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_ETS, 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;
}
ets = ETS(qdisc);
if (streq(lvalue, "Bands"))
p = &ets->n_bands;
else if (streq(lvalue, "StrictBands"))
p = &ets->n_strict;
else
assert_not_reached("Invalid lvalue.");
if (isempty(rvalue)) {
*p = 0;
qdisc = NULL;
return 0;
}
r = safe_atou8(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 > TCQ_ETS_MAX_BANDS) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid '%s='. The value must be <= %d, ignoring assignment: %s",
lvalue, TCQ_ETS_MAX_BANDS, rvalue);
return 0;
}
*p = v;
qdisc = NULL;
return 0;
}
int config_parse_ets_quanta(
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;
EnhancedTransmissionSelection *ets;
Network *network = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_ETS, 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;
}
ets = ETS(qdisc);
if (isempty(rvalue)) {
memzero(ets->quanta, sizeof(uint32_t) * TCQ_ETS_MAX_BANDS);
ets->n_quanta = 0;
qdisc = NULL;
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
uint64_t v;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract next value, ignoring: %m");
break;
}
if (r == 0)
break;
r = parse_size(word, 1024, &v);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, word);
continue;
}
if (v == 0 || v > UINT32_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid '%s=', ignoring assignment: %s",
lvalue, word);
continue;
}
if (ets->n_quanta >= TCQ_ETS_MAX_BANDS) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Too many quanta in '%s=', ignoring assignment: %s",
lvalue, word);
continue;
}
ets->quanta[ets->n_quanta++] = v;
}
qdisc = NULL;
return 0;
}
int config_parse_ets_prio(
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;
EnhancedTransmissionSelection *ets;
Network *network = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = qdisc_new_static(QDISC_KIND_ETS, 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;
}
ets = ETS(qdisc);
if (isempty(rvalue)) {
memzero(ets->prio, sizeof(uint8_t) * (TC_PRIO_MAX + 1));
ets->n_prio = 0;
qdisc = NULL;
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
uint8_t v;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract next value, ignoring: %m");
break;
}
if (r == 0)
break;
r = safe_atou8(word, &v);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse '%s=', ignoring assignment: %s",
lvalue, word);
continue;
}
if (ets->n_prio > TC_PRIO_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Too many priomap in '%s=', ignoring assignment: %s",
lvalue, word);
continue;
}
ets->prio[ets->n_prio++] = v;
}
qdisc = NULL;
return 0;
}
static int enhanced_transmission_selection_verify(QDisc *qdisc) {
EnhancedTransmissionSelection *ets;
assert(qdisc);
ets = ETS(qdisc);
if (ets->n_bands == 0)
ets->n_bands = ets->n_strict + ets->n_quanta;
if (ets->n_bands == 0)
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: At least one of Band=, Strict=, or Quanta= must be specified. "
"Ignoring [EnhancedTransmissionSelection] section from line %u.",
qdisc->section->filename, qdisc->section->line);
if (ets->n_bands < ets->n_strict + ets->n_quanta)
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: Not enough total bands to cover all the strict bands and quanta. "
"Ignoring [EnhancedTransmissionSelection] section from line %u.",
qdisc->section->filename, qdisc->section->line);
for (unsigned i = 0; i < ets->n_prio; i++)
if (ets->prio[i] >= ets->n_bands)
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: PriorityMap= element is out of bands. "
"Ignoring [EnhancedTransmissionSelection] section from line %u.",
qdisc->section->filename, qdisc->section->line);
return 0;
}
const QDiscVTable ets_vtable = {
.object_size = sizeof(EnhancedTransmissionSelection),
.tca_kind = "ets",
.fill_message = enhanced_transmission_selection_fill_message,
.verify = enhanced_transmission_selection_verify,
};
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