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([2a09:bac1:76c0:540::f:3cb]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7d58644edf0sm4723385a34.2.2026.02.27.09.42.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Feb 2026 09:42:07 -0800 (PST) From: Chris J Arges To: michael.chan@broadcom.com, pavan.chebbi@broadcom.com, Alexei Starovoitov , Daniel Borkmann , "David S. Miller" , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev Cc: kernel-team@cloudflare.com, Chris J Arges , netdev@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH net-next 0/4] bnxt_en: add XDP RSS hash metadata support Date: Fri, 27 Feb 2026 11:40:16 -0600 Message-ID: X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: bpf@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. The driver changes introduce a bnxt_xdp_buff wrapper that carries hardware RX completion descriptors alongside the xdp_buff, then use it to implement bpf_xdp_metadata_rx_hash(). The selftest changes refactor common XDP/BPF helpers into a shared library and add a new xdp_metadata test that verifies RSS hash extraction for TCP and UDP traffic via device-bound XDP programs. Chris J Arges (4): bnxt_en: use bnxt_xdp_buff for xdp context bnxt_en: Implement XDP RSS hash metadata extraction 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 | 30 ++-- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 + drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 47 +++++ drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 10 ++ tools/testing/selftests/drivers/net/Makefile | 1 + .../selftests/drivers/net/lib/py/__init__.py | 2 + tools/testing/selftests/drivers/net/xdp.py | 95 +++------- .../selftests/drivers/net/xdp_metadata.py | 144 ++++++++++++++++ .../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 ++++++++++++++++++ 11 files changed, 482 insertions(+), 82 deletions(-) create mode 100644 tools/testing/selftests/drivers/net/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 base-commit: 7dff99b354601dd01829e1511711846e04340a69 -- 2.43.0