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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
commita0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 (patch)
tree8feaf1a1932871b139b3b30be4c09c66489918be /tc/tc_qevent.c
parentInitial commit. (diff)
downloadiproute2-upstream.tar.xz
iproute2-upstream.zip
Adding upstream version 6.1.0.upstream/6.1.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tc/tc_qevent.c')
-rw-r--r--tc/tc_qevent.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/tc/tc_qevent.c b/tc/tc_qevent.c
new file mode 100644
index 0000000..3456807
--- /dev/null
+++ b/tc/tc_qevent.c
@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+
+/*
+ * Helpers for handling qevents.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "tc_qevent.h"
+#include "utils.h"
+
+void qevents_init(struct qevent_util *qevents)
+{
+ if (!qevents)
+ return;
+
+ for (; qevents->id; qevents++)
+ memset(qevents->data, 0, qevents->data_size);
+}
+
+int qevent_parse(struct qevent_util *qevents, int *p_argc, char ***p_argv)
+{
+ char **argv = *p_argv;
+ int argc = *p_argc;
+ const char *name = *argv;
+ int err;
+
+ if (!qevents)
+ goto out;
+
+ for (; qevents->id; qevents++) {
+ if (strcmp(name, qevents->id) == 0) {
+ NEXT_ARG();
+ err = qevents->parse_qevent(qevents, &argc, &argv);
+ if (err)
+ return err;
+
+ *p_argc = argc;
+ *p_argv = argv;
+ return 0;
+ }
+ }
+
+out:
+ fprintf(stderr, "Unknown qevent `%s'\n", name);
+ return -1;
+}
+
+int qevents_read(struct qevent_util *qevents, struct rtattr **tb)
+{
+ int err;
+
+ if (!qevents)
+ return 0;
+
+ for (; qevents->id; qevents++) {
+ if (tb[qevents->attr]) {
+ err = qevents->read_qevent(qevents, tb);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+void qevents_print(struct qevent_util *qevents, FILE *f)
+{
+ int first = true;
+
+ if (!qevents)
+ return;
+
+ for (; qevents->id; qevents++) {
+ struct qevent_base *qeb = qevents->data;
+
+ if (qeb->block_idx) {
+ if (first) {
+ open_json_array(PRINT_JSON, "qevents");
+ first = false;
+ }
+
+ open_json_object(NULL);
+ print_string(PRINT_ANY, "kind", "qevent %s", qevents->id);
+ qevents->print_qevent(qevents, f);
+ print_string(PRINT_FP, NULL, "%s", " ");
+ close_json_object();
+ }
+ }
+
+ if (!first)
+ close_json_array(PRINT_ANY, "");
+}
+
+bool qevents_have_block(struct qevent_util *qevents, __u32 block_idx)
+{
+ if (!qevents)
+ return false;
+
+ for (; qevents->id; qevents++) {
+ struct qevent_base *qeb = qevents->data;
+
+ if (qeb->block_idx == block_idx)
+ return true;
+ }
+
+ return false;
+}
+
+int qevents_dump(struct qevent_util *qevents, struct nlmsghdr *n)
+{
+ int err;
+
+ if (!qevents)
+ return 0;
+
+ for (; qevents->id; qevents++) {
+ struct qevent_base *qeb = qevents->data;
+
+ if (qeb->block_idx) {
+ err = qevents->dump_qevent(qevents, n);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int parse_block_idx(const char *arg, struct qevent_base *qeb)
+{
+ if (qeb->block_idx) {
+ fprintf(stderr, "Qevent block index already specified\n");
+ return -1;
+ }
+
+ if (get_unsigned(&qeb->block_idx, arg, 10) || !qeb->block_idx) {
+ fprintf(stderr, "Illegal qevent block index\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int read_block_idx(struct rtattr *attr, struct qevent_base *qeb)
+{
+ if (qeb->block_idx) {
+ fprintf(stderr, "Qevent block index already specified\n");
+ return -1;
+ }
+
+ qeb->block_idx = rta_getattr_u32(attr);
+ if (!qeb->block_idx) {
+ fprintf(stderr, "Illegal qevent block index\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void print_block_idx(FILE *f, __u32 block_idx)
+{
+ print_uint(PRINT_ANY, "block", " block %u", block_idx);
+}
+
+int qevent_parse_plain(struct qevent_util *qu, int *p_argc, char ***p_argv)
+{
+ struct qevent_plain *qe = qu->data;
+ char **argv = *p_argv;
+ int argc = *p_argc;
+
+ if (qe->base.block_idx) {
+ fprintf(stderr, "Duplicate qevent\n");
+ return -1;
+ }
+
+ while (argc > 0) {
+ if (strcmp(*argv, "block") == 0) {
+ NEXT_ARG();
+ if (parse_block_idx(*argv, &qe->base))
+ return -1;
+ } else {
+ break;
+ }
+ NEXT_ARG_FWD();
+ }
+
+ if (!qe->base.block_idx) {
+ fprintf(stderr, "Unspecified qevent block index\n");
+ return -1;
+ }
+
+ *p_argc = argc;
+ *p_argv = argv;
+ return 0;
+}
+
+int qevent_read_plain(struct qevent_util *qu, struct rtattr **tb)
+{
+ struct qevent_plain *qe = qu->data;
+
+ return read_block_idx(tb[qu->attr], &qe->base);
+}
+
+void qevent_print_plain(struct qevent_util *qu, FILE *f)
+{
+ struct qevent_plain *qe = qu->data;
+
+ print_block_idx(f, qe->base.block_idx);
+}
+
+int qevent_dump_plain(struct qevent_util *qu, struct nlmsghdr *n)
+{
+ struct qevent_plain *qe = qu->data;
+
+ return addattr32(n, 1024, qu->attr, qe->base.block_idx);
+}