Commit 909f0e28 authored by Magnus Karlsson's avatar Magnus Karlsson Committed by Daniel Borkmann
Browse files

selftests: xsk: Add tests for 2K frame size 



Add tests for 2K frame size. Both a standard send and receive test and
one testing for invalid descriptors when the frame size is 2K.

Signed-off-by: default avatarMagnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarMaciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-21-magnus.karlsson@gmail.com
parent 0d1b7f3a

tools/testing/selftests/bpf/xdpxceiver.c

+23 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
 *    g. unaligned mode

 *    h. tests for invalid and corner case Tx descriptors so that the correct ones

 *       are discarded and let through, respectively.

 *    i. 2K frame size tests

 *

 * Total tests: 12

 *
@@ -1205,6 +1206,8 @@ static void testapp_invalid_desc(struct test_spec *test) 
		{UMEM_SIZE - PKT_SIZE / 2, PKT_SIZE, 0, false},

		/* Straddle a page boundrary */

		{0x3000 - PKT_SIZE / 2, PKT_SIZE, 0, false},

		/* Straddle a 2K boundrary */

		{0x3800 - PKT_SIZE / 2, PKT_SIZE, 0, true},

		/* Valid packet for synch so that something is received */

		{0x4000, PKT_SIZE, 0, true}};
@@ -1212,6 +1215,11 @@ static void testapp_invalid_desc(struct test_spec *test) 
		/* Crossing a page boundrary allowed */

		pkts[6].valid = true;

	}

	if (test->ifobj_tx->umem->frame_size == XSK_UMEM__DEFAULT_FRAME_SIZE / 2) {

		/* Crossing a 2K frame size boundrary not allowed */

		pkts[7].valid = false;

	}



	pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));

	testapp_validate_traffic(test);

	pkt_stream_restore_default(test);
@@ -1262,6 +1270,15 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_ 
		test_spec_set_name(test, "RUN_TO_COMPLETION");

		testapp_validate_traffic(test);

		break;

	case TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME:

		test_spec_set_name(test, "RUN_TO_COMPLETION_2K_FRAME_SIZE");

		test->ifobj_tx->umem->frame_size = 2048;

		test->ifobj_rx->umem->frame_size = 2048;

		pkt_stream_replace(test, DEFAULT_PKT_CNT, MIN_PKT_SIZE);

		testapp_validate_traffic(test);



		pkt_stream_restore_default(test);

		break;

	case TEST_TYPE_POLL:

		test->ifobj_tx->use_poll = true;

		test->ifobj_rx->use_poll = true;
@@ -1272,6 +1289,12 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_ 
		test_spec_set_name(test, "ALIGNED_INV_DESC");

		testapp_invalid_desc(test);

		break;

	case TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME:

		test_spec_set_name(test, "ALIGNED_INV_DESC_2K_FRAME_SIZE");

		test->ifobj_tx->umem->frame_size = 2048;

		test->ifobj_rx->umem->frame_size = 2048;

		testapp_invalid_desc(test);

		break;

	case TEST_TYPE_UNALIGNED_INV_DESC:

		test_spec_set_name(test, "UNALIGNED_INV_DESC");

		test->ifobj_tx->umem->unaligned_mode = true;

tools/testing/selftests/bpf/xdpxceiver.h

+2 −0
Original line number Diff line number Diff line
@@ -54,9 +54,11 @@ enum test_mode { 


enum test_type {

	TEST_TYPE_RUN_TO_COMPLETION,

	TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME,

	TEST_TYPE_POLL,

	TEST_TYPE_UNALIGNED,

	TEST_TYPE_ALIGNED_INV_DESC,

	TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,

	TEST_TYPE_UNALIGNED_INV_DESC,

	TEST_TYPE_TEARDOWN,

	TEST_TYPE_BIDI,