From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
netdev@vger.kernel.org, Tariq Toukan <tariqt@nvidia.com>
Subject: [PATCH net-next 00/14] mlx5 dynamic msix
Date: Sun, 19 Feb 2023 22:14:28 -0800 [thread overview]
Message-ID: <20230220061442.403092-1-saeed@kernel.org> (raw)
From: Saeed Mahameed <saeedm@nvidia.com>
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 (14):
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
drivers/net/ethernet/mellanox/mlx5/core/dev.c | 14 +-
.../net/ethernet/mellanox/mlx5/core/devlink.h | 11 +
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 220 +++++++++-------
.../mellanox/mlx5/core/irq_affinity.c | 42 ++-
.../net/ethernet/mellanox/mlx5/core/main.c | 17 +-
.../ethernet/mellanox/mlx5/core/mlx5_irq.h | 10 +-
.../net/ethernet/mellanox/mlx5/core/pci_irq.c | 248 ++++++++++++------
.../net/ethernet/mellanox/mlx5/core/pci_irq.h | 4 +-
include/linux/cpu_rmap.h | 5 +-
include/linux/mlx5/driver.h | 6 +
lib/cpu_rmap.c | 39 ++-
11 files changed, 387 insertions(+), 229 deletions(-)
--
2.39.1
next reply other threads:[~2023-02-20 6:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-20 6:14 Saeed Mahameed [this message]
2023-02-20 6:14 ` [PATCH net-next 01/14] lib: cpu_rmap: Avoid use after free on rmap->obj array entries Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 02/14] lib: cpu_rmap: Use allocator for rmap entries Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 03/14] lib: cpu_rmap: Add irq_cpu_rmap_remove to complement irq_cpu_rmap_add Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 04/14] net/mlx5e: Coding style fix, add empty line Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 05/14] net/mlx5: Fix wrong comment Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 06/14] net/mlx5: Modify struct mlx5_irq to use struct msi_map Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 07/14] net/mlx5: Use newer affinity descriptor Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 08/14] net/mlx5: Improve naming of pci function vectors Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 09/14] net/mlx5: Refactor completion irq request/release code Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 10/14] net/mlx5: Use dynamic msix vectors allocation Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 11/14] net/mlx5: Move devlink registration before mlx5_load Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 12/14] net/mlx5: Refactor calculation of required completion vectors Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 13/14] net/mlx5: Use one completion vector if eth is disabled Saeed Mahameed
2023-02-20 6:14 ` [PATCH net-next 14/14] net/mlx5: Provide external API for allocating vectors Saeed Mahameed
2023-02-21 0:51 ` [PATCH net-next 00/14] mlx5 dynamic msix Jakub Kicinski
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