From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:07 +0200
Subject: selftests: xsk: Fix missing initialization
Patch-mainline: v5.16-rc1
Git-commit: 5b132056123dfe25b0a8c96d1420e9c31cb8edf8
References: jsc#PED-1377

Fix missing initialization of the member rx_pkt_nb in the packet
stream. This leads to some tests declaring success too early as the
test thought all packets had already been received.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-8-magnus.karlsson@gmail.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
 tools/testing/selftests/bpf/xdpxceiver.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -445,6 +445,12 @@ static void test_spec_set_name(struct te
 	strncpy(test->name, name, MAX_TEST_NAME_SIZE);
 }
 
+static void pkt_stream_reset(struct pkt_stream *pkt_stream)
+{
+	if (pkt_stream)
+		pkt_stream->rx_pkt_nb = 0;
+}
+
 static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 {
 	if (pkt_nb >= pkt_stream->nb_pkts)
@@ -1032,6 +1038,7 @@ static void testapp_validate_traffic(str
 		exit_with_error(errno);
 
 	test->current_step++;
+	pkt_stream_reset(ifobj_rx->pkt_stream);
 
 	/*Spawn RX thread */
 	pthread_create(&t0, NULL, ifobj_rx->func_ptr, test);