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| author | Tushar Vyavahare <tushar.vyavahare@intel.com> | 2024-04-02 11:45:29 +0000 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2024-04-03 16:04:14 +0200 |
| commit | c53908b254fcf25b05bcdf6634adb36eaccac111 (patch) | |
| tree | a122671ae8298b2f23d3f86ebd86a878260648ff | |
| parent | c4f960539fae6f04617d3909cc0dfdb88e7d197b (diff) | |
| download | bpf-next-c53908b254fcf25b05bcdf6634adb36eaccac111.tar.gz | |
selftests/xsk: Add new test case for AF_XDP under max ring sizes
Introduce a test case to evaluate AF_XDP's robustness by pushing hardware
and software ring sizes to their limits. This test ensures AF_XDP's
reliability amidst potential producer/consumer throttling due to maximum
ring utilization. The testing strategy includes:
1. Configuring rings to their maximum allowable sizes.
2. Executing a series of tests across diverse batch sizes to assess
system's behavior under different configurations.
Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20240402114529.545475-8-tushar.vyavahare@intel.com
| -rw-r--r-- | tools/testing/selftests/bpf/xskxceiver.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c index dac2dcf39bb8ff..2eac0895b0a160 100644 --- a/tools/testing/selftests/bpf/xskxceiver.c +++ b/tools/testing/selftests/bpf/xskxceiver.c @@ -2439,6 +2439,30 @@ static int testapp_hw_sw_min_ring_size(struct test_spec *test) return testapp_validate_traffic(test); } +static int testapp_hw_sw_max_ring_size(struct test_spec *test) +{ + u32 max_descs = XSK_RING_PROD__DEFAULT_NUM_DESCS * 2; + int ret; + + test->set_ring = true; + test->total_steps = 2; + test->ifobj_tx->ring.tx_pending = test->ifobj_tx->ring.tx_max_pending; + test->ifobj_tx->ring.rx_pending = test->ifobj_tx->ring.rx_max_pending; + test->ifobj_rx->umem->num_frames = max_descs; + test->ifobj_rx->xsk->rxqsize = max_descs; + test->ifobj_tx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS; + test->ifobj_rx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS; + + ret = testapp_validate_traffic(test); + if (ret) + return ret; + + /* Set batch_size to 4095 */ + test->ifobj_tx->xsk->batch_size = max_descs - 1; + test->ifobj_rx->xsk->batch_size = max_descs - 1; + return testapp_validate_traffic(test); +} + static void run_pkt_test(struct test_spec *test) { int ret; @@ -2544,6 +2568,7 @@ static const struct test_spec tests[] = { {.name = "UNALIGNED_INV_DESC_MULTI_BUFF", .test_func = testapp_unaligned_inv_desc_mb}, {.name = "TOO_MANY_FRAGS", .test_func = testapp_too_many_frags}, {.name = "HW_SW_MIN_RING_SIZE", .test_func = testapp_hw_sw_min_ring_size}, + {.name = "HW_SW_MAX_RING_SIZE", .test_func = testapp_hw_sw_max_ring_size}, }; static void print_tests(void) |