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Only create PSP steering tables when PSP configuration is enabled on a PSP device. Previously, mlx5e_psp_set_config (== .set_config on the PSP device) did nothing. Steering was created and hooked up to incoming traffic at device initialization time, via mlx5e_init_nic_rx -> mlx5e_accel_init_rx -> mlx5_accel_psp_fs_init_rx_tables. Similarly, TX tables were created and hooked to egress traffic at mlx5e_init_nic_tx -> mlx5e_accel_init_tx -> mlx5_accel_psp_fs_init_tx_tables Doing this means both ingress and egress UDP packets go through the PSP steering tables, causing extra latency and overhead. A better solution is to let the incoming encrypted PSP packets get dropped by SW and not impose an overhead on all UDP packets which have to traverse the PSP steering rules when PSP isn't used. Additionally, upcoming changes to support HW-GRO need to reconfigure PSP steering dynamically and this patch is a necessary step in that direction. Two new functions are defined: - accel_psp_fs_create: Creates steering tables and connects RX UDP v4/v6 traffic to PSP RX tables. - accel_psp_fs_destroy: Disconnects incoming RX traffic from PSP steering and destroys steering tables. PSP steering cleanup, which happens independently from PSP device configuration, is unchanged. When the device is going away, steering tables are destroyed as well. The netdev lock is now used for proper synchronization between the new set_config flow and device steering init/cleanup. This will be important in future patches, when PSP will be able to reconfigure itself dynamically upon netdev feature changes. Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/20260707130858.969928-14-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. Quick Start ----------- * Report a bug: See Documentation/admin-guide/reporting-issues.rst * Get the latest kernel: https://kernel.org * Build the kernel: See Documentation/admin-guide/quickly-build-trimmed-linux.rst * Join the community: https://lore.kernel.org/ Essential Documentation ----------------------- All users should be familiar with: * Building requirements: Documentation/process/changes.rst * Code of Conduct: Documentation/process/code-of-conduct.rst * License: See COPYING Documentation can be built with make htmldocs or viewed online at: https://www.kernel.org/doc/html/latest/ Who Are You? ============ Find your role below: * New Kernel Developer - Getting started with kernel development * Academic Researcher - Studying kernel internals and architecture * Security Expert - Hardening and vulnerability analysis * Backport/Maintenance Engineer - Maintaining stable kernels * System Administrator - Configuring and troubleshooting * Maintainer - Leading subsystems and reviewing patches * Hardware Vendor - Writing drivers for new hardware * Distribution Maintainer - Packaging kernels for distros * AI Coding Assistant - LLMs and AI-powered development tools For Specific Users ================== New Kernel Developer -------------------- Welcome! 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