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Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet Cc: Saeed Mahameed , netdev@vger.kernel.org, Tariq Toukan , Thomas Gleixner Subject: [pull request][net-next V2 00/15] mlx5 updates 2023-03-20 Date: Fri, 24 Mar 2023 16:13:26 -0700 Message-Id: <20230324231341.29808-1-saeed@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Saeed Mahameed v1->v2: 1) Improved commit messages 2) Added reviewed by Jacob Keller 3) handled Checkpatch errors 4) CC Thomas 5) Proper errno return values 6) Avoid "glue" leakage. 7) Removed unnecessary Fixes tag. This series from Eli, adds the support for dynamic msix and irq vector allocation in mlx5, required for mlx5 vdpa posted interrupt feature [1]. For more information please see tag log below. Please pull and let me know if there is any problem. The following changes since commit e8d018dd0257f744ca50a729e3d042cf2ec9da65: Linux 6.3-rc3 (2023-03-19 13:27:55 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git tags/mlx5-updates-2023-03-20 for you to fetch changes up to 2e21ab28e230fd8333ac0586901431132cc308d7: vdpa/mlx5: Support interrupt bypassing (2023-03-24 16:08:40 -0700) ---------------------------------------------------------------- mlx5-updates-2023-03-20 mlx5 dynamic msix This patch series adds support for dynamic msix vectors allocation in mlx5. Eli Cohen Says: ================ The following series of patches modifies mlx5_core to work with the dynamic MSIX API. Currently, mlx5_core allocates all the interrupt vectors it needs and distributes them amongst the consumers. With the introduction of dynamic MSIX support, which allows for allocation of interrupts more than once, we now allocate vectors as we need them. This allows other drivers running on top of mlx5_core to allocate interrupt vectors for their own use. An example for this is mlx5_vdpa, which uses these vectors to propagate interrupts directly from the hardware to the vCPU [1]. As a preparation for using this series, a use after free issue is fixed in lib/cpu_rmap.c and the allocator for rmap entries has been modified. A complementary API for irq_cpu_rmap_add() has also been introduced. [1] https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git/patch/?id=0f2bf1fcae96a83b8c5581854713c9fc3407556e ================ ---------------------------------------------------------------- Eli Cohen (15): lib: cpu_rmap: Avoid use after free on rmap->obj array entries lib: cpu_rmap: Use allocator for rmap entries lib: cpu_rmap: Add irq_cpu_rmap_remove to complement irq_cpu_rmap_add net/mlx5e: Coding style fix, add empty line net/mlx5: Fix wrong comment net/mlx5: Modify struct mlx5_irq to use struct msi_map net/mlx5: Use newer affinity descriptor net/mlx5: Improve naming of pci function vectors net/mlx5: Refactor completion irq request/release code net/mlx5: Use dynamic msix vectors allocation net/mlx5: Move devlink registration before mlx5_load net/mlx5: Refactor calculation of required completion vectors net/mlx5: Use one completion vector if eth is disabled net/mlx5: Provide external API for allocating vectors vdpa/mlx5: Support interrupt bypassing drivers/net/ethernet/mellanox/mlx5/core/dev.c | 14 +- drivers/net/ethernet/mellanox/mlx5/core/devlink.h | 11 + drivers/net/ethernet/mellanox/mlx5/core/eq.c | 220 ++++++++++-------- .../net/ethernet/mellanox/mlx5/core/irq_affinity.c | 42 ++-- drivers/net/ethernet/mellanox/mlx5/core/main.c | 17 +- drivers/net/ethernet/mellanox/mlx5/core/mlx5_irq.h | 10 +- drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c | 248 +++++++++++++++------ drivers/net/ethernet/mellanox/mlx5/core/pci_irq.h | 4 +- drivers/vdpa/mlx5/net/mlx5_vnet.c | 139 +++++++++++- drivers/vdpa/mlx5/net/mlx5_vnet.h | 14 ++ include/linux/cpu_rmap.h | 4 +- include/linux/mlx5/driver.h | 6 + lib/cpu_rmap.c | 57 ++++- 13 files changed, 542 insertions(+), 244 deletions(-)