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| author | Jakub Kicinski <kuba@kernel.org> | 2026-04-02 23:59:53 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-04 01:05:42 +0300 |
| commit | 30f831b44a98a660ccaf608f88d8bb945318dc59 (patch) | |
| tree | 74b08738daf7c29584c660c6f4c114a10268f33c /tools/testing | |
| parent | 789ec16eb397e7d1286e92a859859493f35878fe (diff) | |
| download | linux-30f831b44a98a660ccaf608f88d8bb945318dc59.tar.xz | |
selftests: drv-net: gro: add data burst test case
Add a test trying to induce a GRO context timeout followed
by another sequence of packets for the same flow. The second
burst arrives 100ms after the first one so any implementation
(SW or HW) must time out waiting at that point. We expect both
bursts to be aggregated successfully but separately.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260402210000.1512696-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing')
| -rwxr-xr-x | tools/testing/selftests/drivers/net/gro.py | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/net/lib/gro.c | 21 |
2 files changed, 22 insertions, 1 deletions
diff --git a/tools/testing/selftests/drivers/net/gro.py b/tools/testing/selftests/drivers/net/gro.py index 70709bf670c7..10da5d4bee9b 100755 --- a/tools/testing/selftests/drivers/net/gro.py +++ b/tools/testing/selftests/drivers/net/gro.py @@ -289,7 +289,7 @@ def _gro_variants(): # Tests that work for all protocols common_tests = [ - "data_same", "data_lrg_sml", "data_sml_lrg", + "data_same", "data_lrg_sml", "data_sml_lrg", "data_burst", "ack", "flags_psh", "flags_syn", "flags_rst", "flags_urg", "flags_cwr", "tcp_csum", "tcp_seq", "tcp_ts", "tcp_opt", diff --git a/tools/testing/selftests/net/lib/gro.c b/tools/testing/selftests/net/lib/gro.c index 3e611ae25f61..4d002af4a7aa 100644 --- a/tools/testing/selftests/net/lib/gro.c +++ b/tools/testing/selftests/net/lib/gro.c @@ -12,6 +12,7 @@ * - data_same: same size packets coalesce * - data_lrg_sml: large then small coalesces * - data_sml_lrg: small then large doesn't coalesce + * - data_burst: two bursts of two, separated by 100ms * * ack: * Pure ACK does not coalesce. @@ -1298,6 +1299,21 @@ static void gro_sender(void) } else if (strcmp(testname, "data_sml_lrg") == 0) { send_data_pkts(txfd, &daddr, PAYLOAD_LEN / 2, PAYLOAD_LEN); write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else if (strcmp(testname, "data_burst") == 0) { + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(txfd, buf, total_hdr_len + PAYLOAD_LEN, &daddr); + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + write_packet(txfd, buf, total_hdr_len + PAYLOAD_LEN, &daddr); + + usleep(100 * 1000); /* 100ms */ + create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + write_packet(txfd, buf, total_hdr_len + PAYLOAD_LEN, &daddr); + create_packet(buf, PAYLOAD_LEN * 3, 0, PAYLOAD_LEN, 0); + write_packet(txfd, buf, total_hdr_len + PAYLOAD_LEN, &daddr); + + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); /* ack test */ } else if (strcmp(testname, "ack") == 0) { @@ -1463,6 +1479,11 @@ static void gro_receiver(void) correct_payload[0] = PAYLOAD_LEN / 2; correct_payload[1] = PAYLOAD_LEN; check_recv_pkts(rxfd, correct_payload, 2); + } else if (strcmp(testname, "data_burst") == 0) { + printf("two bursts of two data packets: "); + correct_payload[0] = PAYLOAD_LEN * 2; + correct_payload[1] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 2); /* ack test */ } else if (strcmp(testname, "ack") == 0) { |