164 lines
4.7 KiB
C
164 lines
4.7 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 "cake.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 cake_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
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CommonApplicationsKeptEnhanced *c;
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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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c = CAKE(qdisc);
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r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "cake");
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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 (c->bandwidth > 0) {
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r = sd_netlink_message_append_u64(req, TCA_CAKE_BASE_RATE64, c->bandwidth);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CAKE_BASE_RATE64 attribute: %m");
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}
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r = sd_netlink_message_append_s32(req, TCA_CAKE_OVERHEAD, c->overhead);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_CAKE_OVERHEAD 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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int config_parse_cake_bandwidth(
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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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CommonApplicationsKeptEnhanced *c;
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Network *network = data;
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uint64_t k;
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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_CAKE, 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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c = CAKE(qdisc);
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if (isempty(rvalue)) {
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c->bandwidth = 0;
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qdisc = NULL;
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return 0;
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}
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r = parse_size(rvalue, 1000, &k);
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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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c->bandwidth = k/8;
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qdisc = NULL;
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return 0;
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}
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int config_parse_cake_overhead(
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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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CommonApplicationsKeptEnhanced *c;
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Network *network = data;
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int32_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_CAKE, 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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c = CAKE(qdisc);
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if (isempty(rvalue)) {
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c->overhead = 0;
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qdisc = NULL;
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return 0;
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}
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r = safe_atoi32(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 < -64 || v > 256) {
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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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return 0;
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}
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c->overhead = v;
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qdisc = NULL;
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return 0;
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}
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const QDiscVTable cake_vtable = {
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.object_size = sizeof(CommonApplicationsKeptEnhanced),
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.tca_kind = "cake",
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.fill_message = cake_fill_message,
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};
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