kernel/linux.git/Documentation/networking/device_drivers, branch v6.1.168

net: dpaa2: replace dpaa2_mac_is_type_fixed() with dpaa2_mac_is_type_phy()

2026-03-25T10:02:59+00:00

[ Upstream commit 320fefa9e2edc67011e235ea1d50f0d00ddfe004 ] dpaa2_mac_is_type_fixed() is a header with no implementation and no callers, which is referenced from the documentation though. It can be deleted. On the other hand, it would be useful to reuse the code between dpaa2_eth_is_type_phy() and dpaa2_switch_port_is_type_phy(). That common code should be called dpaa2_mac_is_type_phy(), so let's create that. The removal and the addition are merged into the same patch because, in fact, is_type_phy() is the logical opposite of is_type_fixed(). Signed-off-by: Vladimir Oltean Reviewed-by: Andrew Lunn Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei Signed-off-by: Paolo Abeni Stable-dep-of: 74badb9c20b1 ("dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler") Signed-off-by: Sasha Levin

net: ena: Add dynamic recycling mechanism for rx buffers

2024-06-12T09:03:58+00:00

[ Upstream commit f7d625adeb7bc6a9ec83d32d9615889969d64484 ] The current implementation allocates page-sized rx buffers. As traffic may consist of different types and sizes of packets, in various cases, buffers are not fully used. This change (Dynamic RX Buffers - DRB) uses part of the allocated rx page needed for the incoming packet, and returns the rest of the unused page to be used again as an rx buffer for future packets. A threshold of 2K for unused space has been set in order to declare whether the remainder of the page can be reused again as an rx buffer. As a page may be reused, dma_sync_single_for_cpu() is added in order to sync the memory to the CPU side after it was owned by the HW. In addition, when the rx page can no longer be reused, it is being unmapped using dma_page_unmap(), which implicitly syncs and then unmaps the entire page. In case the kernel still handles the skbs pointing to the previous buffers from that rx page, it may access garbage pointers, caused by the implicit sync overwriting them. The implicit dma sync is removed by replacing dma_page_unmap() with dma_unmap_page_attrs() with DMA_ATTR_SKIP_CPU_SYNC flag. The functionality is disabled for XDP traffic to avoid handling several descriptors per packet. Signed-off-by: Arthur Kiyanovski Signed-off-by: Shay Agroskin Signed-off-by: David Arinzon Link: https://lore.kernel.org/r/20230612121448.28829-1-darinzon@amazon.com Signed-off-by: Jakub Kicinski Stable-dep-of: 2dc8b1e7177d ("net: ena: Fix redundant device NUMA node override") Signed-off-by: Sasha Levin

docs: networking: device drivers: flexcan: fix invalid email

2022-09-06T06:32:12+00:00

The Amarula contact info email address is wrong, so fix it up to use the correct one. Signed-off-by: Dario Binacchi Link: https://lore.kernel.org/all/20220828134442.794990-1-dario.binacchi@amarulasolutions.com Signed-off-by: Marc Kleine-Budde

net: ngbe: Add build support for ngbe

2022-08-30T10:32:51+00:00

Add build options and guidance doc. Initialize pci device access for Wangxun Gigabit Ethernet devices. Reviewed-by: Andrew Lunn Signed-off-by: Mengyuan Lou Link: https://lore.kernel.org/r/20220826034609.51854-1-mengyuanlou@net-swift.com Signed-off-by: Paolo Abeni

ice: add write functionality for GNSS TTY

2022-07-21T20:25:17+00:00

Add the possibility to write raw bytes to the GNSS module through the first TTY device. This allows user to configure the module. Create a second read-only TTY device. Signed-off-by: Karol Kolacinski Tested-by: Gurucharan (A Contingent worker at Intel) Signed-off-by: Tony Nguyen

eth: remove neterion/vxge

2022-07-05T22:26:31+00:00

The last meaningful change to this driver was made by Jon in 2011. As much as we'd like to believe that this is because the code is perfect the chances are nobody is using this hardware. Because of the size of this driver there is a nontrivial maintenance cost to keeping this code around, in the last 2 years we're averaging more than 1 change a month. Some of which require nontrivial review effort, see commit 877fe9d49b74 ("Revert "drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug in vxge-main.c"") for example. Let's try to remove this driver. In general, IMHO, we need to establish a clear path for shedding dead code. It will be hard to unless we have some experience trying to delete stuff. Link: https://lore.kernel.org/r/20220701044234.706229-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

Merge tag 'linux-can-next-for-5.20-20220703' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

2022-07-03T11:32:15+00:00

Marc Kleine-Budde says: ==================== pull-request: can-next 2022-07-03 this is a pull request of 15 patches for net-next/master. The first 2 patches are by Max Staudt and add the can327 serial CAN driver along with a new line discipline ID. The next patch is by me an fixes a typo in the ctucanfd driver. The last 12 patches are by Dario Binacchi and integrate slcan CAN serial driver better into the existing CAN driver API. ==================== Signed-off-by: David S. Miller

net: txgbe: Add build support for txgbe

2022-06-30T03:57:06+00:00

Add doc build infrastructure for txgbe driver. Initialize PCI memory space for WangXun 10 Gigabit Ethernet devices. Signed-off-by: Jiawen Wu Link: https://lore.kernel.org/r/20220628095530.889344-1-jiawenwu@trustnetic.com Signed-off-by: Jakub Kicinski

can: can327: CAN/ldisc driver for ELM327 based OBD-II adapters

2022-06-27T15:00:04+00:00

This is the can327 driver. It does a surprisingly good job at turning ELM327 based OBD-II interfaces into cheap CAN interfaces for simple homebrew projects. Please see the included documentation for details and limitations: Documentation/networking/device_drivers/can/can327.rst Link: https://lore.kernel.org/all/20220618195031.10975-1-max@enpas.org Signed-off-by: Max Staudt Reviewed-by: Vincent Mailhol [mkl: minor coding style improvements] Signed-off-by: Marc Kleine-Budde

eth: de4x5: remove support for Generic DECchip & DIGITAL EtherWORKS PCI/EISA

2022-05-23T10:43:51+00:00

Looks like almost all changes to this driver had been tree-wide refactoring since git era begun. There is one commit from Al 15 years ago which could potentially be fixing a real bug. The driver is using virt_to_bus() and is a real magnet for pointless cleanups. It seems unlikely to have real users. Let's try to shed this maintenance burden. Signed-off-by: Jakub Kicinski Acked-by: Michael Ellerman (powerpc) Acked-by: Arnd Bergmann Signed-off-by: David S. Miller