netdev - [PATCH v6 bpf-next 20/24] selftests/xsk: add unaligned mode test for multi-buffer

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Date: Fri, 14 Jul 2023 13:36:36 +0200
From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To: bpf@...r.kernel.org,
	ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org
Cc: netdev@...r.kernel.org,
	magnus.karlsson@...el.com,
	bjorn@...nel.org,
	tirthendu.sarkar@...el.com,
	toke@...nel.org,
	kuba@...nel.org,
	horms@...nel.org
Subject: [PATCH v6 bpf-next 20/24] selftests/xsk: add unaligned mode test for multi-buffer

From: Magnus Karlsson <magnus.karlsson@...el.com>

Add a test for multi-buffer AF_XDP when using unaligned mode. The test
sends 4096 9K-buffers.

Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com>
---
 tools/testing/selftests/bpf/xskxceiver.c | 15 +++++++++++++++
 tools/testing/selftests/bpf/xskxceiver.h |  1 +
 2 files changed, 16 insertions(+)

diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index 6fb682facce5..0a1e693e5713 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -50,6 +50,8 @@
  *       are discarded and let through, respectively.
  *    i. 2K frame size tests
  *    j. If multi-buffer is supported, send 9k packets divided into 3 frames
+ *    k. If multi-buffer and huge pages are supported, send 9k packets in a single frame
+ *       using unaligned mode
  *
  * Total tests: 12
  *
@@ -1761,6 +1763,16 @@ static int testapp_unaligned(struct test_spec *test)
 	return testapp_validate_traffic(test);
 }
 
+static int testapp_unaligned_mb(struct test_spec *test)
+{
+	test_spec_set_name(test, "UNALIGNED_MODE_9K");
+	test->mtu = MAX_ETH_JUMBO_SIZE;
+	test->ifobj_tx->umem->unaligned_mode = true;
+	test->ifobj_rx->umem->unaligned_mode = true;
+	pkt_stream_replace(test, DEFAULT_PKT_CNT, MAX_ETH_JUMBO_SIZE);
+	return testapp_validate_traffic(test);
+}
+
 static int testapp_single_pkt(struct test_spec *test)
 {
 	struct pkt pkts[] = {{0, MIN_PKT_SIZE, 0, true}};
@@ -2038,6 +2050,9 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 	case TEST_TYPE_UNALIGNED:
 		ret = testapp_unaligned(test);
 		break;
+	case TEST_TYPE_UNALIGNED_MB:
+		ret = testapp_unaligned_mb(test);
+		break;
 	case TEST_TYPE_HEADROOM:
 		ret = testapp_headroom(test);
 		break;
diff --git a/tools/testing/selftests/bpf/xskxceiver.h b/tools/testing/selftests/bpf/xskxceiver.h
index cfc7c572fd2c..48cb48f1c5e6 100644
--- a/tools/testing/selftests/bpf/xskxceiver.h
+++ b/tools/testing/selftests/bpf/xskxceiver.h
@@ -86,6 +86,7 @@ enum test_type {
 	TEST_TYPE_XDP_DROP_HALF,
 	TEST_TYPE_XDP_METADATA_COUNT,
 	TEST_TYPE_RUN_TO_COMPLETION_MB,
+	TEST_TYPE_UNALIGNED_MB,
 	TEST_TYPE_MAX
 };
 
-- 
2.34.1