110 lines
3.2 KiB
C
110 lines
3.2 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 "drr.h"
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#include "netlink-util.h"
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#include "parse-util.h"
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#include "string-util.h"
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const QDiscVTable drr_vtable = {
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.object_size = sizeof(DeficitRoundRobinScheduler),
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.tca_kind = "drr",
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};
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static int drr_class_fill_message(Link *link, TClass *tclass, sd_netlink_message *req) {
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DeficitRoundRobinSchedulerClass *drr;
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int r;
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assert(link);
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assert(tclass);
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assert(req);
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drr = TCLASS_TO_DRR(tclass);
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r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "drr");
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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 (drr->quantum > 0) {
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r = sd_netlink_message_append_u32(req, TCA_DRR_QUANTUM, drr->quantum);
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_DRR_QUANTUM, 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_drr_size(
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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_(tclass_free_or_set_invalidp) TClass *tclass = NULL;
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DeficitRoundRobinSchedulerClass *drr;
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Network *network = data;
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uint64_t u;
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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 = tclass_new_static(TCLASS_KIND_DRR, network, filename, section_line, &tclass);
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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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"Failed to create traffic control class, ignoring assignment: %m");
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return 0;
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}
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drr = TCLASS_TO_DRR(tclass);
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if (isempty(rvalue)) {
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drr->quantum = 0;
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tclass = NULL;
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return 0;
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}
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r = parse_size(rvalue, 1024, &u);
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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 (u > UINT32_MAX) {
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log_syntax(unit, LOG_WARNING, filename, line, 0, "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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drr->quantum = (uint32_t) u;
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tclass = NULL;
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return 0;
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}
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const TClassVTable drr_tclass_vtable = {
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.object_size = sizeof(DeficitRoundRobinSchedulerClass),
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.tca_kind = "drr",
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.fill_message = drr_class_fill_message,
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};
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