188 lines
5.2 KiB
C
188 lines
5.2 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 "fifo.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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static int fifo_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
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struct tc_fifo_qopt opt = {};
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FirstInFirstOut *fifo;
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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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switch(qdisc->kind) {
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case QDISC_KIND_PFIFO:
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fifo = PFIFO(qdisc);
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break;
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case QDISC_KIND_BFIFO:
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fifo = BFIFO(qdisc);
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break;
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case QDISC_KIND_PFIFO_HEAD_DROP:
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fifo = PFIFO_HEAD_DROP(qdisc);
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break;
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default:
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assert_not_reached("Invalid QDisc kind.");
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}
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opt.limit = fifo->limit;
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r = sd_netlink_message_append_data(req, TCA_OPTIONS, &opt, sizeof(struct tc_fifo_qopt));
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if (r < 0)
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return log_link_error_errno(link, r, "Could not append TCA_OPTIONS attribute: %m");
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return 0;
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}
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int config_parse_pfifo_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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
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Network *network = data;
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FirstInFirstOut *fifo;
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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(ltype, 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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switch(qdisc->kind) {
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case QDISC_KIND_PFIFO:
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fifo = PFIFO(qdisc);
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break;
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case QDISC_KIND_PFIFO_HEAD_DROP:
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fifo = PFIFO_HEAD_DROP(qdisc);
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break;
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default:
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assert_not_reached("Invalid QDisc kind.");
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}
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if (isempty(rvalue)) {
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fifo->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, &fifo->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_bfifo_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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
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Network *network = data;
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FirstInFirstOut *fifo;
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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 = qdisc_new_static(QDISC_KIND_BFIFO, 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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fifo = BFIFO(qdisc);
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if (isempty(rvalue)) {
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fifo->limit = 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, 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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fifo->limit = (uint32_t) u;
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qdisc = NULL;
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return 0;
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}
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const QDiscVTable pfifo_vtable = {
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.object_size = sizeof(FirstInFirstOut),
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.tca_kind = "pfifo",
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.fill_message = fifo_fill_message,
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};
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const QDiscVTable bfifo_vtable = {
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.object_size = sizeof(FirstInFirstOut),
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.tca_kind = "bfifo",
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.fill_message = fifo_fill_message,
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};
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const QDiscVTable pfifo_head_drop_vtable = {
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.object_size = sizeof(FirstInFirstOut),
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.tca_kind = "pfifo_head_drop",
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.fill_message = fifo_fill_message,
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};
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const QDiscVTable pfifo_fast_vtable = {
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.object_size = sizeof(FirstInFirstOut),
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.tca_kind = "pfifo_fast",
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};
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