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(unknown [10.28.36.165]) by maili.marvell.com (Postfix) with ESMTP id 1F16C3F7065; Thu, 21 May 2026 02:53:05 -0700 (PDT) From: Ratheesh Kannoth To: , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , Ratheesh Kannoth Subject: [PATCH v16 net-next 0/9] octeontx2-af: npc: Enhancements. Date: Thu, 21 May 2026 15:22:54 +0530 Message-ID: <20260521095303.2395584-1-rkannoth@marvell.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 Content-Type: text/plain X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIxMDA5NyBTYWx0ZWRfXz+y/2Bwjjrz4 pVgaqiX84KWWzVEuqaKKgPvhWszaMC1GoEyeMtlOOkTRvWVjb3JA8HReCksMY0EbIN6tUDC3tZN X3x2mM2H2F4ryBC/b+FRmm1YCIfGoBkwo6kM37rhGa0gpG7FlX8njnZLhNioha/XGEup0i9rk22 HOyaMDAyRKIOkXKlDxFeX1tY5Jfkdthlo4oI8Vwn8IR9XsHDIW00uMyx5bq2iimEvNjATGlCtYz lXpVuHn9FvbS+1XwQUmz5PgwBVoCnAg9zwlwRa19ShfP7tjc50DHQ1JDt1BMoq21SH7AGb0Ocfl 9S62VJ5nwzjbZmWMiKUKBQZkv3ZDG9f2a80u7Cyu1VmvPOBlLNcybKo/K4x4ZO2H2AIS1S4DxOB 9lw+4y8nyeCvq0xDakETn1mHijneSgypdThLiZEuA/6lMxwvmGiikdaCidneaVr7vS47avilV+r E+zUFbHeKmLfK3EjCng== X-Proofpoint-GUID: t-YWJmsJpE0Fn0meldNZ4U6jQaNrHxN- X-Authority-Analysis: v=2.4 cv=HPrz0Itv c=1 sm=1 tr=0 ts=6a0ed60c cx=c_pps a=gIfcoYsirJbf48DBMSPrZA==:117 a=gIfcoYsirJbf48DBMSPrZA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=l0iWHRpgs5sLHlkKQ1IR:22 a=EAYMVhzMl8SCOHhVQcBL:22 a=VwQbUJbxAAAA:8 a=M5GUcnROAAAA:8 a=1rdZWFfAsYpIarNArpIA:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-ORIG-GUID: t-YWJmsJpE0Fn0meldNZ4U6jQaNrHxN- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-21_01,2026-05-18_01,2025-10-01_01 This series extends Marvell octeontx2-af support for CN20K NPC (MCAM debuggability, allocation policy, default-rule lifetime, optional KPU profiles from firmware files, X2/X4 MCAM keyword handling in flows and defaults, and dynamic CN20K NPC private state), adds a devlink mechanism for multi-value parameters, and adjusts devlink param netlink helpers and mlx5 so stack usage stays within -Wframe-larger-than limits once union devlink_param_value grows. Patch 1 improves CN20K MCAM visibility in debugfs: mcam_layout marks enabled entries, dstats reports per-entry hit deltas, and mismatch lists enabled entries without a PF mapping. MCAM enable state is tracked in a bitmap updated from the CN20K enable path. Patch 2 reduces stack usage in mlx5e_pcie_cong_get_thresh_config() by reusing a single union devlink_param_value across four devl_param_driverinit_value_get() calls (instead of union devlink_param_value val[4] on the stack) and assigning each vu16 into mlx5e_pcie_cong_thresh, so the helper stays under the frame-size warning limit as the union grows (patches 3-4). Patch 3 changes devlink_nl_param_value_put() and devlink_nl_param_value_fill_one() to pass union devlink_param_value by pointer instead of by value. Passing two copies of the union by value in the param netlink path consumes over 500 bytes of argument stack and risks CONFIG_FRAME_WARN as the union grows beyond its historical size (patch 4). Patch 4 (Saeed) introduces DEVLINK_PARAM_TYPE_U64_ARRAY and nested DEVLINK_ATTR_PARAM_VALUE_DATA attributes so drivers and user space can exchange bounded u64 arrays; YAML, uapi, and netlink validation are updated. Patch 5 adds a runtime devlink parameter srch_order to reorder CN20K subbank search during MCAM allocation. Patch 6 ties default MCAM entries to NIX LF alloc/free on CN20K, adds NIX_LF_DONT_FREE_DFT_IDXS for PF teardown paths that must not drop default NPC indexes while the driver still owns state, and tightens nix_lf_alloc error propagation. Patch 7 allows loading a custom KPU profile from /lib/firmware/kpu via module parameter kpu_profile, with cam2 / ptype_mask wiring and helpers that share firmware-sourced vs filesystem-sourced profile layouts. Patch 8 makes default-rule allocation, AF flow install, and PF-side RSS, defaults, and ethtool flows respect the active CN20K MCAM keyword width (X2 vs X4), including X4 reference-index masking and -EOPNOTSUPP when a flow needs X4 keys on an X2-only profile. Patch 9 replaces file-scope npc_priv and static dstats with allocation sized from discovered bank/subbank geometry, threads npc_priv_get() through CN20K NPC paths, and allocates dstats via devm_kzalloc for the debugfs helper. The mlx5 change sits immediately before the devlink patches so the series applies cleanly and stays warning-free when built incrementally; pass-by-pointer precedes the U64 array type so helpers are not copying an even larger union by value. The CN20K patches keep srch_order ahead of NIX LF coordination, KPU-from-filesystem, X2/X4 handling, and the npc_priv refactor that touches the same files heavily. Ratheesh Kannoth (8): octeontx2-af: npc: cn20k: debugfs enhancements net/mlx5e: Reduce stack use reading PCIe congestion thresholds devlink: pass param values by pointer octeontx2-af: npc: cn20k: add subbank search order control octeontx2: cn20k: Coordinate default rules with NIX LF lifecycle octeontx2-af: npc: Support for custom KPU profile from filesystem octeontx2: cn20k: Respect NPC MCAM X2/X4 profile in flows and DFT alloc octeontx2-af: npc: cn20k: Allocate npc_priv and dstats dynamically. Saeed Mahameed (1): devlink: Implement devlink param multi attribute nested data values Documentation/netlink/specs/devlink.yaml | 4 + drivers/dpll/zl3073x/devlink.c | 6 +- drivers/net/ethernet/amazon/ena/ena_devlink.c | 8 +- drivers/net/ethernet/amd/pds_core/core.h | 2 +- drivers/net/ethernet/amd/pds_core/devlink.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 6 +- drivers/net/ethernet/intel/ice/devlink/devlink.c | 30 +- .../ethernet/marvell/octeontx2/af/cn20k/debugfs.c | 16 +- .../net/ethernet/marvell/octeontx2/af/cn20k/npc.c | 542 ++++++++++++--------- .../net/ethernet/marvell/octeontx2/af/cn20k/npc.h | 6 +- drivers/net/ethernet/marvell/octeontx2/af/mbox.h | 1 + drivers/net/ethernet/marvell/octeontx2/af/npc.h | 17 + drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 12 +- .../ethernet/marvell/octeontx2/af/rvu_devlink.c | 114 ++++- .../net/ethernet/marvell/octeontx2/af/rvu_nix.c | 69 ++- .../net/ethernet/marvell/octeontx2/af/rvu_npc.c | 486 ++++++++++++++---- .../net/ethernet/marvell/octeontx2/af/rvu_npc.h | 17 + .../net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c | 12 +- .../net/ethernet/marvell/octeontx2/af/rvu_reg.h | 1 + .../ethernet/marvell/octeontx2/nic/otx2_devlink.c | 4 +- .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 48 +- .../net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 6 +- drivers/net/ethernet/mellanox/mlx4/main.c | 14 +- drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 72 +-- .../mellanox/mlx5/core/en/pcie_cong_event.c | 45 +- .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 4 +- .../net/ethernet/mellanox/mlx5/core/lib/nv_param.c | 12 +- drivers/net/ethernet/mellanox/mlxsw/core.c | 8 +- drivers/net/ethernet/netronome/nfp/devlink_param.c | 6 +- drivers/net/netdevsim/dev.c | 4 +- include/net/devlink.h | 12 +- include/uapi/linux/devlink.h | 1 + net/devlink/netlink_gen.c | 2 + net/devlink/param.c | 120 +++-- 35 files changed, 1175 insertions(+), 536 deletions(-) -- v15 -> v16: Addressed Sashiko comments https://lore.kernel.org/netdev/20260520020939.1457231-1-rkannoth@marvell.com/ v14 -> v15: Addressed Paolo comments https://lore.kernel.org/netdev/20260514062537.3813802-1-rkannoth@marvell.com/ v13 -> v14: Addressed sashiko comments. I had to revert Jiri comment in v11 as sashiko was complaining about leaking kernel memory to userspace. https://lore.kernel.org/netdev/20260511033923.1301976-1-rkannoth@marvell.com/ v12 -> v13: Addressed David Laight comments https://lore.kernel.org/netdev/20260508034912.4082520-1-rkannoth@marvell.com/ v11 -> v12: Addressed Paolo,Jiri comments. https://lore.kernel.org/netdev/20260409025055.1664053-1-rkannoth@marvell.com/ Added one patch which was rejected by simon in net (as it was kind of enhancement rather than a bug) Added one more patch- which allocates two variables from heap. v10 -> v11: Addressed Paolo comments. https://lore.kernel.org/netdev/20260403025533.6250-1-rkannoth@marvell.com/ v9 -> v10: Addressed Paolo comments https://lore.kernel.org/netdev/ 20260330053105.2722453-1-rkannoth@marvell.com/ v8 -> v9: Addressed Simon comments https://lore.kernel.org/netdev/ 20260325072159.1126964-1-rkannoth@marvell.com/ v7 -> v8: Addressed Simon comments https://lore.kernel.org/netdev/ 20260323035110.3908741-1-rkannoth@marvell.com/T/#t v6 -> v7: Addressed Simon comments https://lore.kernel.org/netdev/20260320165432.98832-1-horms@kernel.org/ v5 -> v6: Addressed Jakub,Jiri comments https://lore.kernel.org/netdev/ 20260317045623.250187-1-rkannoth@marvell.com/ v4 -> v5: Addressed Jakub comments https://lore.kernel.org/netdev/ 20260312022754.2029595-6-rkannoth@marvell.com/ v3 -> v4: Addressed Simon comments https://lore.kernel.org/netdev/abDeXLpMMxp7G1v3@rkannoth-OptiPlex-7090/#t v2 -> v3: Addressed Simon comments. https://lore.kernel.org/netdev/ 20260304043032.3661647-1-rkannoth@marvell.com/ v1 -> v2: Addressed Jakub comments. https://lore.kernel.org/netdev/ 20260302085803.2449828-1-rkannoth@marvell.com/#t 2.43.0