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(unknown [10.28.36.165]) by maili.marvell.com (Postfix) with ESMTP id AB77B3F704E; Mon, 8 Jun 2026 21:05:04 -0700 (PDT) From: Ratheesh Kannoth To: , CC: , , , , , , , , , "Ratheesh Kannoth" Subject: [PATCH v20 net-next 0/9] octeontx2-af: npc: Enhancements. Date: Tue, 9 Jun 2026 09:34:44 +0530 Message-ID: <20260609040453.711932-1-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: AW1haW4tMjYwNjA5MDAzMyBTYWx0ZWRfX6jaIcQGFn+YZ nGttJtlmvOMI8dGUEX96/foaJeonXwMNK99bOwrxbs48Kro8e7najleUd+CJ/yvcmetHH7IvHLh ncTuewJf6a9yrqjtuAgS8uXyqUuphD8/TWSgsuW/gEF1rgec4D6jN0KD15FpsMDICLZxrl8IWjK 4zPrnzcTpcEYpho30MAOGyfyyPhdk6J7AwNkjam8/KVdkzLaLTxfoWrVHEy79hdGhBjGh5AlF2O F+C5/gP0gpPhrFiDh7bGc1Z1tGZ45FeI9QSR3p5FZhtFRED8lqIsGcSejsDPHX1QdkMOx/h4Sko iQtnUd4JR5JSK5fs9hyOg1bTjW+Qq3BsrvuEeufpdLgjwM+cqwzjN3nGmGEFz2tHMBCcRWr+A1R GG66jgm7jI4LcV21p0NQWsUuJNEvDkc4rdN0J+QuFBUvS7w6l3EibpjYBR1sknA2jMAXhHAHWma 5yAn0tHZSVBfYYqMOEA== X-Proofpoint-ORIG-GUID: CFzfUkgjiFzUlg6RApLmgRcnWyxFMZB5 X-Proofpoint-GUID: CFzfUkgjiFzUlg6RApLmgRcnWyxFMZB5 X-Authority-Analysis: v=2.4 cv=Pv2jqQM3 c=1 sm=1 tr=0 ts=6a2790f5 cx=c_pps a=gIfcoYsirJbf48DBMSPrZA==:117 a=gIfcoYsirJbf48DBMSPrZA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=l0iWHRpgs5sLHlkKQ1IR:22 a=EAYMVhzMl8SCOHhVQcBL:22 a=VwQbUJbxAAAA:8 a=M5GUcnROAAAA:8 a=lnb98I17lAOo71hyCJQA:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-09_01,2026-06-09_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 moves devlink_nl_param_fill() temporaries to the heap so stack usage stays reasonable once union devlink_param_value grows (patch 3). Patch 1 enforces a single RVU admin-function PCI device in the kernel. On Octeon series SoCs, hardware resources such as NPC, NIX and related blocks are global and coordinated by the AF driver; PFs and VFs request them through AF mailbox messages. Firmware exposes only one AF PCI function at boot, so two AF driver instances cannot both own that state. rvu_probe() rejects a second bind with -EBUSY, logs a warning, clears the probe gate on early allocation failures, and aligns the driver model with hardware so reviewers and automation can rely on exactly one bound AF. Patch 2 improves CN20K MCAM visibility in debugfs: mcam_layout marks enabled entries, dstats reports per-entry hit deltas (baseline updated in software after each read; hardware counters are not cleared), and mismatch lists enabled entries without a PF mapping. Patch 3 allocates the per-configuration-mode union devlink_param_value buffers and struct devlink_param_gset_ctx used by devlink_nl_param_fill() with kcalloc()/kzalloc_obj() and funnels failures through a single cleanup path so the netlink reply path stays safe as the union grows. 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 (the param uses the u64 array type from patch 4). 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. Patch 1 is ordered first so later patches assume a single bound AF. Heap-backed devlink_nl_param_fill() sits immediately before the U64 array param work so incremental builds stay stack-safe as the union grows; the CN20K patches keep srch_order ahead of NIX LF coordination, optional KPU profile load from firmware files, X2/X4 handling, and the npc_priv refactor that touches the same files heavily. Ratheesh Kannoth (8): octeontx2-af: Enforce single RVU AF probe octeontx2-af: npc: cn20k: debugfs enhancements devlink: heap-allocate param fill buffers in devlink_nl_param_fill 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 + .../marvell/octeontx2/af/cn20k/debugfs.c | 163 ++++- .../ethernet/marvell/octeontx2/af/cn20k/npc.c | 638 ++++++++++++------ .../ethernet/marvell/octeontx2/af/cn20k/npc.h | 18 +- .../net/ethernet/marvell/octeontx2/af/mbox.h | 1 + .../net/ethernet/marvell/octeontx2/af/npc.h | 17 + .../net/ethernet/marvell/octeontx2/af/rvu.c | 14 +- .../net/ethernet/marvell/octeontx2/af/rvu.h | 12 +- .../marvell/octeontx2/af/rvu_devlink.c | 92 ++- .../ethernet/marvell/octeontx2/af/rvu_nix.c | 77 ++- .../ethernet/marvell/octeontx2/af/rvu_npc.c | 486 ++++++++++--- .../ethernet/marvell/octeontx2/af/rvu_npc.h | 17 + .../marvell/octeontx2/af/rvu_npc_fs.c | 12 +- .../marvell/octeontx2/af/rvu_reg.h | 1 + .../marvell/octeontx2/nic/otx2_flows.c | 48 +- .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 6 +- include/net/devlink.h | 8 + include/uapi/linux/devlink.h | 1 + net/devlink/netlink_gen.c | 2 + net/devlink/param.c | 95 ++- 20 files changed, 1306 insertions(+), 406 deletions(-) -- v19 -> v20: Addressed Jakub comments https://lore.kernel.org/netdev/20260605063245.3553861-1-rkannoth@marvell.com/ v18 -> v19: Addressed Jakub comments. https://lore.kernel.org/netdev/20260602060359.1894952-1-rkannoth@marvell.com/ Added 1 more patch. v17 -> v18: Addressed sashiko comments. https://lore.kernel.org/netdev/20260601025844.865865-1-rkannoth@marvell.com/ v16 -> v17: Addressed Jakub comments. https://lore.kernel.org/netdev/20260521095303.2395584-1-rkannoth@marvell.com/ 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