The added test checks if the kernel accepts each of the fanout
modes the AF_PACKET PMD supports.

Signed-off-by: Frank Dressler <[email protected]>
---
 app/test/test_pmd_af_packet.c | 41 +++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/app/test/test_pmd_af_packet.c b/app/test/test_pmd_af_packet.c
index b668ca5b81..478a0a6355 100644
--- a/app/test/test_pmd_af_packet.c
+++ b/app/test/test_pmd_af_packet.c
@@ -992,6 +992,46 @@ test_af_packet_multi_queue(void)
        return TEST_SUCCESS;
 }
 
+/*
+ * Test: Fanout modes
+ */
+static int
+test_af_packet_fanout_modes(void)
+{
+       static const char * const modes[] = {
+               "hash", "lb", "cpu", "rollover", "rnd", "qm",
+       };
+       uint16_t test_port;
+       char devargs[256];
+       unsigned int i;
+       int ret;
+
+       if (!tap_created) {
+               printf("SKIPPED: TAP interface not available (need root)\n");
+               return TEST_SKIPPED;
+       }
+
+       for (i = 0; i < RTE_DIM(modes); i++) {
+               snprintf(devargs, sizeof(devargs), 
"iface=%s,qpairs=2,fanout_mode=%s",
+                        TAP_DEV_NAME, modes[i]);
+
+               ret = rte_vdev_init("net_af_packet_fanout", devargs);
+               TEST_ASSERT(ret == 0,
+                           "Failed to create af_packet sockets with 
fanout_mode=%s: %d",
+                           modes[i], ret);
+
+               ret = rte_eth_dev_get_port_by_name("net_af_packet_fanout", 
&test_port);
+               if (ret == 0)
+                       rte_eth_dev_close(test_port);
+               rte_vdev_uninit("net_af_packet_fanout");
+               TEST_ASSERT(ret == 0,
+                           "af_packet port with fanout_mode=%s has no port id: 
%d",
+                           modes[i], ret);
+       }
+
+       return TEST_SUCCESS;
+}
+
 /*
  * Multi-threaded test context
  */
@@ -1108,6 +1148,7 @@ static struct unit_test_suite af_packet_test_suite = {
                TEST_CASE(test_af_packet_frame_config),
                TEST_CASE(test_af_packet_qdisc_bypass),
                TEST_CASE(test_af_packet_multi_queue),
+               TEST_CASE(test_af_packet_fanout_modes),
 
                TEST_CASES_END() /**< NULL terminate unit test array */
        }
-- 
2.56.0

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