Simple unit test that created pcapng file using API.
To run this test you need to have at least one device.
For example:
DPDK_TEST=pcapng_autotest ./build/app/test/dpdk-test -l 0-15 \
--no-huge -m 2048 --vdev=net_tap,iface=dummy
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
app/test/meson.build | 1 +
app/test/test_pcapng.c | 190 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 191 insertions(+)
create mode 100644 app/test/test_pcapng.c
diff --git a/app/test/meson.build b/app/test/meson.build
index a7611686adcb..0d551ac9c2b2 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -97,6 +97,7 @@ test_sources = files(
'test_metrics.c',
'test_mcslock.c',
'test_mp_secondary.c',
+ 'test_pcapng.c',
'test_per_lcore.c',
'test_pflock.c',
'test_pmd_perf.c',
diff --git a/app/test/test_pcapng.c b/app/test/test_pcapng.c
new file mode 100644
index 000000000000..6bf993ad30f6
--- /dev/null
+++ b/app/test/test_pcapng.c
@@ -0,0 +1,190 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2021 Microsoft Corporation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <rte_ethdev.h>
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_net.h>
+#include <rte_pcapng.h>
+
+#include "test.h"
+
+#define DUMMY_MBUF_NUM 3
+
+static rte_pcapng_t *pcapng;
+static struct rte_mempool *mp;
+static const uint32_t pkt_len = 200;
+static uint64_t ifrecv, ifdrop;
+static uint16_t port_id;
+
+/* first mbuf in the packet, should always be at offset 0 */
+struct dummy_mbuf {
+ struct rte_mbuf mb[DUMMY_MBUF_NUM];
+ uint8_t buf[DUMMY_MBUF_NUM][RTE_MBUF_DEFAULT_BUF_SIZE];
+};
+
+static void
+dummy_mbuf_prep(struct rte_mbuf *mb, uint8_t buf[], uint32_t buf_len,
+ uint32_t data_len)
+{
+ uint32_t i;
+ uint8_t *db;
+
+ mb->buf_addr = buf;
+ mb->buf_iova = (uintptr_t)buf;
+ mb->buf_len = buf_len;
+ rte_mbuf_refcnt_set(mb, 1);
+
+ /* set pool pointer to dummy value, test doesn't use it */
+ mb->pool = (void *)buf;
+
+ rte_pktmbuf_reset(mb);
+ db = (uint8_t *)rte_pktmbuf_append(mb, data_len);
+
+ for (i = 0; i != data_len; i++)
+ db[i] = i;
+}
+
+/* Make an IP packet consisting of chain of two packets */
+static void
+mbuf1_prepare(struct dummy_mbuf *dm, uint32_t plen)
+{
+ struct rte_ipv4_hdr *ph;
+ const struct rte_ipv4_hdr iph = {
+ .version_ihl = RTE_IPV4_VHL_DEF,
+ .total_length = rte_cpu_to_be_16(plen),
+ .time_to_live = IPDEFTTL,
+ .next_proto_id = IPPROTO_RAW,
+ .src_addr = rte_cpu_to_be_32(RTE_IPV4_LOOPBACK),
+ .dst_addr = rte_cpu_to_be_32(RTE_IPV4_BROADCAST),
+ };
+
+ memset(dm, 0, sizeof(*dm));
+ dummy_mbuf_prep(&dm->mb[0], dm->buf[0], sizeof(dm->buf[0]), plen);
+
+ ph = rte_pktmbuf_mtod(dm->mb, typeof(ph));
+ memcpy(ph, &iph, sizeof(iph));
+}
+
+static int
+test_setup(void)
+{
+ char file_template[] = "/tmp/pcapng_test_XXXXXX.pcapng";
+ int tmp_fd;
+
+ port_id = rte_eth_find_next(0);
+ if (port_id >= RTE_MAX_ETHPORTS) {
+ fprintf(stderr, "No valid Ether port\n");
+ return -1;
+ }
+
+ tmp_fd = mkstemps(file_template, strlen(".pcapng"));
+ if (tmp_fd == -1) {
+ perror("mkstemps() failure");
+ return -1;
+ }
+
+ /* open a test capture file */
+ pcapng = rte_pcapng_fdopen(tmp_fd, NULL, NULL, "pcapng_test", NULL);
+ if (pcapng == NULL) {
+ fprintf(stderr, "rte_pcapng_fdopen failed\n");
+ close(tmp_fd);
+ return -1;
+ }
+
+ /* Make a pool for cloned packeets */
+ mp = rte_pktmbuf_pool_create_by_ops("pcapng_test_pool", DUMMY_MBUF_NUM,
+ 0, 0,
+ rte_pcapng_mbuf_size(pkt_len),
+ SOCKET_ID_ANY, "ring_mp_sc");
+ if (mp == NULL) {
+ fprintf(stderr, "Cannot create mempool\n");
+ return -1;
+ }
+ return 0;
+
+}
+
+static int
+test_basic_packets(void)
+{
+ struct rte_mbuf *orig, *clone = NULL;
+ struct dummy_mbuf mbfs;
+ ssize_t len;
+
+ /* make a dummy packet */
+ mbuf1_prepare(&mbfs, pkt_len);
+
+ /* clone them */
+ orig = &mbfs.mb[0];
+ clone = rte_pcapng_copy(port_id, 0, orig, mp, pkt_len,
+ rte_get_tsc_cycles(), 0);
+ if (clone == NULL) {
+ fprintf(stderr, "Cannot copy packet\n");
+ return -1;
+ }
+
+ /* write it to capture file */
+ len = rte_pcapng_write_packets(pcapng, &clone, 1);
+ rte_pktmbuf_free(clone);
+
+ if (len <= 0) {
+ fprintf(stderr, "Write of packets failed\n");
+ return -1;
+ }
+
+ ++ifrecv;
+ return 0;
+}
+
+static int
+test_write_stats(void)
+{
+ ssize_t len;
+
+ /* write a statistics block */
+ len = rte_pcapng_write_stats(pcapng, port_id,
+ NULL, 0, 0,
+ ifrecv, ifdrop);
+ if (len <= 0) {
+ fprintf(stderr, "Write of statistics failed\n");
+ return -1;
+ }
+ return 0;
+}
+
+static void
+test_cleanup(void)
+{
+ if (mp)
+ rte_mempool_free(mp);
+
+ if (pcapng)
+ rte_pcapng_close(pcapng);
+
+}
+
+static struct
+unit_test_suite test_pcapng_suite = {
+ .setup = test_setup,
+ .teardown = test_cleanup,
+ .suite_name = "Test Pcapng Unit Test Suite",
+ .unit_test_cases = {
+ TEST_CASE(test_basic_packets),
+ TEST_CASE(test_write_stats),
+ TEST_CASES_END()
+ }
+};
+
+static int
+test_pcapng(void)
+{
+ return unit_test_suite_runner(&test_pcapng_suite);
+}
+
+REGISTER_TEST_COMMAND(pcapng_autotest, test_pcapng);
--
2.30.2
