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-rw-r--r--src/vppinfra/interrupt.h4
-rw-r--r--src/vppinfra/test_interrupt.c79
2 files changed, 82 insertions, 1 deletions
diff --git a/src/vppinfra/interrupt.h b/src/vppinfra/interrupt.h
index 393574b076b..5c39b2183f8 100644
--- a/src/vppinfra/interrupt.h
+++ b/src/vppinfra/interrupt.h
@@ -110,6 +110,8 @@ clib_interrupt_get_next (void *in, int last)
ASSERT (last >= -1 && last < h->n_int);
off = (last + 1) >> log2_uword_bits;
+ if (off > h->n_int >> log2_uword_bits || off >= h->n_uword_alloc)
+ return -1;
last -= off << log2_uword_bits;
bmp[off] |= __atomic_exchange_n (abm + off, 0, __ATOMIC_SEQ_CST);
@@ -121,7 +123,7 @@ next:
off++;
- if (off > h->n_int >> log2_uword_bits)
+ if (off > h->n_int >> log2_uword_bits || off >= h->n_uword_alloc)
return -1;
bmp[off] |= __atomic_exchange_n (abm + off, 0, __ATOMIC_SEQ_CST);
diff --git a/src/vppinfra/test_interrupt.c b/src/vppinfra/test_interrupt.c
new file mode 100644
index 00000000000..519805edc89
--- /dev/null
+++ b/src/vppinfra/test_interrupt.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2021 Graphiant, Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vppinfra/clib.h>
+#include <vppinfra/format.h>
+#include <vppinfra/error.h>
+#include <vppinfra/random.h>
+#include <vppinfra/time.h>
+#include <vppinfra/interrupt.h>
+
+#define MAX_INTS 2048
+
+int debug = 0;
+
+#define debug(format, args...) \
+ if (debug) \
+ { \
+ fformat (stdout, format, ##args); \
+ }
+
+void
+set_and_check_bits (void *interrupts, int num_ints)
+{
+
+ int step;
+
+ for (step = 1; step < num_ints; step++)
+ {
+ int int_num = -1;
+ int expected = 0;
+
+ debug (" Step of %d\n", step);
+ for (int i = 0; i < num_ints; i += step)
+ {
+ debug (" Setting %d\n", i);
+ clib_interrupt_set (interrupts, i);
+ }
+
+ while ((int_num = clib_interrupt_get_next (interrupts, int_num)) != -1)
+ {
+ debug (" Got %d, expecting %d\n", int_num, expected);
+ ASSERT (int_num == expected);
+ expected += step;
+ clib_interrupt_clear (interrupts, int_num);
+ }
+ }
+}
+
+int
+main (int argc, char *argv[])
+{
+ clib_mem_init (0, 3ULL << 30);
+
+ debug = (argc > 1);
+
+ void *interrupts = NULL;
+
+ for (int num_ints = 0; num_ints < MAX_INTS; num_ints++)
+ {
+ clib_interrupt_resize (&interrupts, num_ints);
+ debug ("Size now %d\n", num_ints);
+
+ set_and_check_bits (interrupts, num_ints);
+ }
+
+ return 0;
+}