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Wed, 25 Mar 2026 13:11:49 -0700 (PDT) Received: from 20HS2G4.aus01.local ([2a09:bac6:bf21:2632::3ce:1a]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-67e0ab274c7sm549764eaf.13.2026.03.25.13.11.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 13:11:48 -0700 (PDT) From: Chris J Arges To: netdev@vger.kernel.org, michael.chan@broadcom.com, pavan.chebbi@broadcom.com, davem@davemloft.net, joe@dama.to, gospo@broadcom.com, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com Cc: andrew+netdev@lunn.ch, horms@kernel.org, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, sdf@fomichev.me, shuah@kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, kernel-team@cloudflare.com, Chris J Arges Subject: [PATCH net-next v5 0/6] bnxt_en: Add XDP RSS hash metadata support Date: Wed, 25 Mar 2026 15:09:46 -0500 Message-ID: <20260325201139.2501937-1-carges@cloudflare.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series adds XDP RSS hash metadata extraction support for the bnxt_en driver and includes selftests to validate the functionality. I was able to test this on a BCM57414 NIC. Patches 1-4 implement the driver support: - Patch 1 adds bnxt_xdp_buff to wrap xdp_buff with pointers to the hardware RX completion descriptors and the completion type. This is similar to other driver implementations. - Patch 2 adds xmo_rx_hash callback for CMP_TYPE_RX_L2_CMP completions. - Patch 3 moves bnxt_rss_ext_op to bnxt.h - Patch 4 adds handling for CMP_TYPE_RX_L2_V3_CMP completions Patches 5-6 add selftest coverage: - Patch 5 refactors common BPF map helper functions out of the existing xdp.py selftest into a shared net/lib/py/bpf.py module. - Patch 6 adds an XDP metadata selftest that loads an XDP program calling bpf_xdp_metadata_rx_hash. The test skips on devices without xdp-rx-metadata-features. Changes from v4: https://lore.kernel.org/all/20260313223029.454755-1-carges@cloudflare.com/ - address RCT again - make _format_hex_bytes private - remove redundant bpf_map_set - rebased on net-next Changes from v3: https://lore.kernel.org/netdev/20260306230600.1628196-1-carges@cloudflare.com/ - split out bnxt_rss_ext_op into header - address RCT issue - rebased on net-next Changes from v2: https://lore.kernel.org/netdev/20260303024510.644962-1-carges@cloudflare.com/ - bnxt xdp: actually fixed RCT issues - bnxt xdp: Added patch 3 to handle CMP_TYPE_RX_L2_V3_CMP completions. Changes from v1: https://lore.kernel.org/netdev/cover.1772211065.git.carges@cloudflare.com/ - selftests: moved tests into net/hw - selftests: fix pylinter errors - selftests: add check for no error count - bnxt_xdp: followed RCT for variable declaration - rebased on net-next Chris J Arges (6): bnxt_en: use bnxt_xdp_buff for xdp context bnxt_en: Implement XDP RSS hash metadata extraction bnxt_en: Move bnxt_rss_ext_op into header bnxt_en: Implement XDP RSS hash metadata extraction for V3_CMP selftests: net: move common xdp.py functions into lib selftests: drv-net: xdp: Add rss_hash metadata tests drivers/net/ethernet/broadcom/bnxt/bnxt.c | 51 +++--- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 19 ++ drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 57 ++++++ drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 10 ++ .../testing/selftests/drivers/net/hw/Makefile | 1 + .../drivers/net/hw/lib/py/__init__.py | 2 + .../selftests/drivers/net/hw/xdp_metadata.py | 146 ++++++++++++++++ .../selftests/drivers/net/lib/py/__init__.py | 2 + tools/testing/selftests/drivers/net/xdp.py | 96 +++-------- .../testing/selftests/net/lib/py/__init__.py | 2 + tools/testing/selftests/net/lib/py/bpf.py | 68 ++++++++ .../selftests/net/lib/xdp_metadata.bpf.c | 163 ++++++++++++++++++ 12 files changed, 516 insertions(+), 101 deletions(-) create mode 100644 tools/testing/selftests/drivers/net/hw/xdp_metadata.py create mode 100644 tools/testing/selftests/net/lib/py/bpf.py create mode 100644 tools/testing/selftests/net/lib/xdp_metadata.bpf.c -- 2.43.0