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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /src/network/tc/fifo.c
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/network/tc/fifo.c')
-rw-r--r--src/network/tc/fifo.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/src/network/tc/fifo.c b/src/network/tc/fifo.c
new file mode 100644
index 0000000..940fa00
--- /dev/null
+++ b/src/network/tc/fifo.c
@@ -0,0 +1,183 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright © 2020 VMware, Inc. */
+
+#include <linux/pkt_sched.h>
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "fifo.h"
+#include "netlink-util.h"
+#include "parse-util.h"
+#include "string-util.h"
+
+static int fifo_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ FirstInFirstOut *fifo;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ switch (qdisc->kind) {
+ case QDISC_KIND_PFIFO:
+ assert_se(fifo = PFIFO(qdisc));
+ break;
+ case QDISC_KIND_BFIFO:
+ assert_se(fifo = BFIFO(qdisc));
+ break;
+ case QDISC_KIND_PFIFO_HEAD_DROP:
+ assert_se(fifo = PFIFO_HEAD_DROP(qdisc));
+ break;
+ default:
+ assert_not_reached();
+ }
+
+ const struct tc_fifo_qopt opt = { .limit = fifo->limit };
+ r = sd_netlink_message_append_data(req, TCA_OPTIONS, &opt, sizeof(opt));
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int config_parse_pfifo_size(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+ Network *network = ASSERT_PTR(data);
+ FirstInFirstOut *fifo;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(ltype, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+ return 0;
+ }
+
+ switch (qdisc->kind) {
+ case QDISC_KIND_PFIFO:
+ fifo = PFIFO(qdisc);
+ break;
+ case QDISC_KIND_PFIFO_HEAD_DROP:
+ fifo = PFIFO_HEAD_DROP(qdisc);
+ break;
+ default:
+ assert_not_reached();
+ }
+
+ if (isempty(rvalue)) {
+ fifo->limit = 0;
+
+ TAKE_PTR(qdisc);
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &fifo->limit);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(qdisc);
+ return 0;
+}
+
+int config_parse_bfifo_size(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+ Network *network = ASSERT_PTR(data);
+ FirstInFirstOut *fifo;
+ uint64_t u;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_BFIFO, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+ return 0;
+ }
+
+ fifo = BFIFO(qdisc);
+
+ if (isempty(rvalue)) {
+ fifo->limit = 0;
+
+ TAKE_PTR(qdisc);
+ return 0;
+ }
+
+ r = parse_size(rvalue, 1024, &u);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+ if (u > UINT32_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ fifo->limit = (uint32_t) u;
+
+ TAKE_PTR(qdisc);
+ return 0;
+}
+
+const QDiscVTable pfifo_vtable = {
+ .object_size = sizeof(FirstInFirstOut),
+ .tca_kind = "pfifo",
+ .fill_message = fifo_fill_message,
+};
+
+const QDiscVTable bfifo_vtable = {
+ .object_size = sizeof(FirstInFirstOut),
+ .tca_kind = "bfifo",
+ .fill_message = fifo_fill_message,
+};
+
+const QDiscVTable pfifo_head_drop_vtable = {
+ .object_size = sizeof(FirstInFirstOut),
+ .tca_kind = "pfifo_head_drop",
+ .fill_message = fifo_fill_message,
+};
+
+const QDiscVTable pfifo_fast_vtable = {
+ .object_size = sizeof(FirstInFirstOut),
+ .tca_kind = "pfifo_fast",
+};