197 lines
5.8 KiB
C
197 lines
5.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later
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* Copyright © 2020 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 generic_random_early_detection_init(QDisc *qdisc) {
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GenericRandomEarlyDetection *gred;
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assert(qdisc);
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gred = GRED(qdisc);
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gred->grio = -1;
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return 0;
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}
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static int generic_random_early_detection_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
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GenericRandomEarlyDetection *gred;
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struct tc_gred_sopt opt = {};
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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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gred = GRED(qdisc);
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opt.DPs = gred->virtual_queues;
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opt.def_DP = gred->default_virtual_queue;
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if (gred->grio >= 0)
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opt.grio = gred->grio;
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r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "gred");
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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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r = sd_netlink_message_append_data(req, TCA_GRED_DPS, &opt, sizeof(struct tc_gred_sopt));
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_GRED_DPS attribute: %m");
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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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static int generic_random_early_detection_verify(QDisc *qdisc) {
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GenericRandomEarlyDetection *gred = GRED(qdisc);
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if (gred->default_virtual_queue >= gred->virtual_queues)
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return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
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"%s: DefaultVirtualQueue= must be less than VirtualQueues=. "
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"Ignoring [GenericRandomEarlyDetection] section from line %u.",
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qdisc->section->filename, qdisc->section->line);
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return 0;
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}
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int config_parse_generic_random_early_detection_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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GenericRandomEarlyDetection *gred;
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Network *network = data;
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uint32_t *p;
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uint32_t v;
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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_GRED, 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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gred = GRED(qdisc);
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if (streq(lvalue, "VirtualQueues"))
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p = &gred->virtual_queues;
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else if (streq(lvalue, "DefaultVirtualQueue"))
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p = &gred->default_virtual_queue;
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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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*p = 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, &v);
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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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if (v > MAX_DPs)
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"Invalid '%s=', ignoring assignment: %s",
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lvalue, rvalue);
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*p = v;
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qdisc = NULL;
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return 0;
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}
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int config_parse_generic_random_early_detection_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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GenericRandomEarlyDetection *gred;
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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_GRED, 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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gred = GRED(qdisc);
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if (isempty(rvalue)) {
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gred->grio = -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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gred->grio = r;
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qdisc = NULL;
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return 0;
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}
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const QDiscVTable gred_vtable = {
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.object_size = sizeof(GenericRandomEarlyDetection),
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.tca_kind = "gred",
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.init = generic_random_early_detection_init,
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.fill_message = generic_random_early_detection_fill_message,
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.verify = generic_random_early_detection_verify,
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};
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