256 lines
7.5 KiB
C
256 lines
7.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later
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* Copyright © 2019 VMware, Inc. */
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#include <linux/pkt_sched.h>
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#include "alloc-util.h"
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#include "conf-parser.h"
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#include "netlink-util.h"
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#include "parse-util.h"
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#include "qdisc.h"
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#include "string-util.h"
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static int controlled_delay_init(QDisc *qdisc) {
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ControlledDelay *cd;
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assert(qdisc);
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cd = CODEL(qdisc);
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cd->ce_threshold_usec = USEC_INFINITY;
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cd->ecn = -1;
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return 0;
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}
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static int controlled_delay_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
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ControlledDelay *cd;
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int r;
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assert(link);
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assert(qdisc);
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assert(req);
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cd = CODEL(qdisc);
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r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "codel");
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if (r < 0)
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return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
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if (cd->packet_limit > 0) {
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r = sd_netlink_message_append_u32(req, TCA_CODEL_LIMIT, cd->packet_limit);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CODEL_LIMIT attribute: %m");
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}
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if (cd->interval_usec > 0) {
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r = sd_netlink_message_append_u32(req, TCA_CODEL_INTERVAL, cd->interval_usec);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CODEL_INTERVAL attribute: %m");
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}
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if (cd->target_usec > 0) {
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r = sd_netlink_message_append_u32(req, TCA_CODEL_TARGET, cd->target_usec);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CODEL_TARGET attribute: %m");
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}
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if (cd->ecn >= 0) {
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r = sd_netlink_message_append_u32(req, TCA_CODEL_ECN, cd->ecn);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CODEL_ECN attribute: %m");
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}
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if (cd->ce_threshold_usec != USEC_INFINITY) {
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r = sd_netlink_message_append_u32(req, TCA_CODEL_CE_THRESHOLD, cd->ce_threshold_usec);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CODEL_CE_THRESHOLD attribute: %m");
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}
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r = sd_netlink_message_close_container(req);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not close container TCA_OPTIONS: %m");
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return 0;
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}
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int config_parse_controlled_delay_u32(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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_cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
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ControlledDelay *cd;
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Network *network = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
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if (r == -ENOMEM)
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return log_oom();
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"More than one kind of queueing discipline, ignoring assignment: %m");
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return 0;
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}
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cd = CODEL(qdisc);
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if (isempty(rvalue)) {
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cd->packet_limit = 0;
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qdisc = NULL;
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return 0;
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}
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r = safe_atou32(rvalue, &cd->packet_limit);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse '%s=', ignoring assignment: %s",
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lvalue, rvalue);
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return 0;
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}
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qdisc = NULL;
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return 0;
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}
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int config_parse_controlled_delay_usec(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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_cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
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ControlledDelay *cd;
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Network *network = data;
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usec_t *p;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
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if (r == -ENOMEM)
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return log_oom();
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"More than one kind of queueing discipline, ignoring assignment: %m");
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return 0;
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}
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cd = CODEL(qdisc);
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if (streq(lvalue, "TargetSec"))
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p = &cd->target_usec;
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else if (streq(lvalue, "IntervalSec"))
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p = &cd->interval_usec;
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else if (streq(lvalue, "CEThresholdSec"))
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p = &cd->ce_threshold_usec;
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else
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assert_not_reached("Invalid lvalue");
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if (isempty(rvalue)) {
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if (streq(lvalue, "CEThresholdSec"))
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*p = USEC_INFINITY;
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else
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*p = 0;
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qdisc = NULL;
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return 0;
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}
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r = parse_sec(rvalue, p);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse '%s=', ignoring assignment: %s",
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lvalue, rvalue);
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return 0;
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}
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qdisc = NULL;
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return 0;
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}
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int config_parse_controlled_delay_bool(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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_cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
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ControlledDelay *cd;
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Network *network = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
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if (r == -ENOMEM)
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return log_oom();
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"More than one kind of queueing discipline, ignoring assignment: %m");
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return 0;
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}
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cd = CODEL(qdisc);
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if (isempty(rvalue)) {
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cd->ecn = -1;
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qdisc = NULL;
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return 0;
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}
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse '%s=', ignoring assignment: %s",
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lvalue, rvalue);
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return 0;
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}
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cd->ecn = r;
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qdisc = NULL;
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return 0;
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}
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const QDiscVTable codel_vtable = {
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.object_size = sizeof(ControlledDelay),
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.tca_kind = "codel",
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.init = controlled_delay_init,
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.fill_message = controlled_delay_fill_message,
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};
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