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linux/tools/testing/selftests/drivers/net/gro.py

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selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: gro: add 1 byte payload test Small IPv4 packets get padded to 60B, this may break / confuse some buggy implementations. Add a test to coalesce a 1B payload. Keep this separate from the lrg_sml test because I suspect some implementations may not handle this case (treat padded frames as ineligible for coalescing). Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260402210000.1512696-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-02 13:59:54 -07:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests/net: gro: add self-test for TCP CWR flag Currently, GRO does not flush packets when the CWR bit is set. A corresponding self-test is being added, in which the CWR flag is set for two consecutive packets, but the first packet with the CWR flag set will not be flushed immediately. +===================+==========+===============+===========+ | Packet id | CWR flag | Payload | Flushing? | +===================+==========+===============+===========+ | 0 | 0 | PAYLOAD_LEN | 0 | | ... | 0 | PAYLOAD_LEN | 1 | +-------------------+----------+---------------+-----------+ | NUM_PACKETS/2 - 1 | 1 | payload_len | 0 | | NUM_PACKETS/2 | 1 | payload_len | 1 | +-------------------+----------+---------------+-----------+ | ... | 0 | PAYLOAD_LEN | 0 | | NUM_PACKETS | 0 | PAYLOAD_LEN | 1 | +===================+==========+===============+===========+ Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260131222515.8485-4-chia-yu.chang@nokia-bell-labs.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-31 23:25:03 +01:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: Enable ntuple-filters if supported Certain devices which support ntuple-filters do not enable the feature by default. The existing tests will skip (if they check for the feature), or fail if they blindly attempt to install rules. Therefore, attempt to turn on ntuple-filters if the device supports them. Signed-off-by: Dimitri Daskalakis <daskald@meta.com> Reviewed-by: Joe Damato <joe@dama.to> Link: https://patch.msgid.link/20260430165217.3700469-1-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-30 09:52:17 -07:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: Enable ntuple-filters if supported Certain devices which support ntuple-filters do not enable the feature by default. The existing tests will skip (if they check for the feature), or fail if they blindly attempt to install rules. Therefore, attempt to turn on ntuple-filters if the device supports them. Signed-off-by: Dimitri Daskalakis <daskald@meta.com> Reviewed-by: Joe Damato <joe@dama.to> Link: https://patch.msgid.link/20260430165217.3700469-1-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-30 09:52:17 -07:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: net: move gro to lib for HW vs SW reuse The gro.c packet sender is used for SW testing but bulk of incoming new tests will be HW-specific. So it's better to put them under drivers/net/hw/, to avoid tip-toeing around netdevsim. Move gro.c to lib so we can reuse it. Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260318033819.1469350-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:14 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: improve feature config We'll need to do a lot more feature handling to test HW-GRO and LRO. Clean up the feature handling for SW GRO a bit to let the next commit focus on the new test cases, only. Make sure HW GRO-like features are not enabled for the SW tests. Be more careful about changing features as "nothing changed" situations may result in non-zero error code from ethtool. Don't disable TSO on the local interface (receiver) when running over netdevsim, we just want GSO to break up the segments on the sender. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:38 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: gro: add 1 byte payload test Small IPv4 packets get padded to 60B, this may break / confuse some buggy implementations. Add a test to coalesce a 1B payload. Keep this separate from the lrg_sml test because I suspect some implementations may not handle this case (treat padded frames as ineligible for coalescing). Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260402210000.1512696-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-02 13:59:54 -07:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests/net: gro: add self-test for TCP CWR flag Currently, GRO does not flush packets when the CWR bit is set. A corresponding self-test is being added, in which the CWR flag is set for two consecutive packets, but the first packet with the CWR flag set will not be flushed immediately. +===================+==========+===============+===========+ | Packet id | CWR flag | Payload | Flushing? | +===================+==========+===============+===========+ | 0 | 0 | PAYLOAD_LEN | 0 | | ... | 0 | PAYLOAD_LEN | 1 | +-------------------+----------+---------------+-----------+ | NUM_PACKETS/2 - 1 | 1 | payload_len | 0 | | NUM_PACKETS/2 | 1 | payload_len | 1 | +-------------------+----------+---------------+-----------+ | ... | 0 | PAYLOAD_LEN | 0 | | NUM_PACKETS | 0 | PAYLOAD_LEN | 1 | +===================+==========+===============+===========+ Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260131222515.8485-4-chia-yu.chang@nokia-bell-labs.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-31 23:25:03 +01:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: gro: add a test for bad IPv4 csum We have a test for coalescing with bad TCP checksum, let's also test bad IPv4 header checksum. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260402210000.1512696-9-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-02 14:00:00 -07:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: gro: test ip6ip6 We explicitly test ipip encap. Let's add ip6ip6, too. Having just ipip seems like favoring IPv4 which we should not do :) Testing all combinations is left for future work, not sure it's actually worth it. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260402210000.1512696-8-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-02 13:59:59 -07:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: run the test against HW GRO and LRO Run the test against HW GRO and LRO. NICs I have pass the base cases. Interestingly all are happy to build GROs larger than 64k. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:39 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: use cmd print Now that cmd() can be printed directly remove the old formatting. Before: # fragmented ip6 doesn't coalesce: # Expected {200 100 100 }, Total 3 packets # Received {200 100 }, Total 2 packets. # /root/ksft-net-drv/drivers/net/gro: incorrect number of packets Now: # CMD: drivers/net/gro --ipv6 --dmac 9e:[...] # EXIT: 1 # STDOUT: fragmented ip6 doesn't coalesce: # STDERR: Expected {200 100 100 }, Total 3 packets # Received {200 100 }, Total 2 packets. # /root/ksft-net-drv/drivers/net/gro: incorrect number of packets Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20260113000740.255360-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:37 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: break out all individual test cases GRO test groups the cases into categories, e.g. "tcp" case checks coalescing in presence of: - packets with bad csum, - sequence number mismatch, - timestamp option value mismatch, - different TCP options. Since we now have TAP support grouping the cases like that lowers our reporting granularity. This matters even more for NICs performing HW GRO and LRO since it appears that most implementation have _some_ bugs. Flagging the whole group of tests as failed prevents us from catching regressions in the things that work today. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260113000740.255360-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-12 16:07:40 -08:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00
selftests: drv-net: gro: add a test for GRO depth Reuse the long sequence test to max out the GRO contexts. Repeat for a single queue, 8 queues, and default number of queues but flow steering to just one. The SW GRO's capacity should be around 64 per queue (8 buckets, up to 8 skbs in a chain). Link: https://patch.msgid.link/20260318033819.1469350-7-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-17 20:38:19 -07:00
selftests: drv-net: add a Python version of the GRO test Rewrite the existing gro.sh test in Python. The conversion not exact, the changes are related to integrating the test with our "remote endpoint" paradigm. The test now reads the IP addresses from the user config. It resolves the MAC address (including running over Layer 3 networks). Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20251120021024.2944527-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19 18:10:21 -08:00