kernel/linux.git/Documentation/networking/device_drivers, branch v5.15.209

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

2026-04-18T08:33:09+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

2024-06-16T11:39:52+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

ixgbe: Document how to enable NBASE-T support

2021-12-22T08:32:43+00:00

[ Upstream commit 271225fd57c2f1e0b3f8826df51be6c634affefe ] Commit a296d665eae1 ("ixgbe: Add ethtool support to enable 2.5 and 5.0 Gbps support") introduced suppression of the advertisement of NBASE-T speeds by default, according to Todd Fujinaka to accommodate customers with network switches which could not cope with advertised NBASE-T speeds, as posted in the E1000-devel mailing list: https://sourceforge.net/p/e1000/mailman/message/37106269/ However, the suppression was not documented at all, nor was how to enable NBASE-T support. Properly document the NBASE-T suppression and how to enable NBASE-T support. Fixes: a296d665eae1 ("ixgbe: Add ethtool support to enable 2.5 and 5.0 Gbps support") Reported-by: Robert Schlabbach Signed-off-by: Robert Schlabbach Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin

Doc: networking: Fox a typo in ice.rst

2021-09-21T10:01:25+00:00

This patch fixes a spelling typo in ice.rst Signed-off-by: Masanari Iida Signed-off-by: David S. Miller

Merge tag 'docs-5.15' of git://git.lwn.net/linux

2021-09-02T01:49:47+00:00

Pull documentation updates from Jonathan Corbet: "Yet another set of documentation changes: - A reworking of PDF generation to yield better results for documents using CJK fonts in particular. - A new set of translations into traditional Chinese, a dialect for which I am assured there is a community of interested readers. - A lot more regular Chinese translation work as well. ... plus the usual assortment of updates, fixes, typo tweaks, etc" * tag 'docs-5.15' of git://git.lwn.net/linux: (55 commits) docs: sphinx-requirements: Move sphinx_rtd_theme to top docs: pdfdocs: Enable language-specific font choice of zh_TW translations docs: pdfdocs: Teach xeCJK about character classes of quotation marks docs: pdfdocs: Permit AutoFakeSlant for CJK fonts docs: pdfdocs: One-half spacing for CJK translations docs: pdfdocs: Add conf.py local to translations for ascii-art alignment docs: pdfdocs: Preserve inter-phrase space in Korean translations docs: pdfdocs: Choose Serif font as CJK mainfont if possible docs: pdfdocs: Add CJK-language-specific font settings docs: pdfdocs: Refactor config for CJK document scripts/kernel-doc: Override -Werror from KCFLAGS with KDOC_WERROR docs/zh_CN: Add zh_CN/accounting/psi.rst doc: align Italian translation Documentation/features/vm: riscv supports THP now docs/zh_CN: add infiniband user_verbs translation docs/zh_CN: add infiniband user_mad translation docs/zh_CN: add infiniband tag_matching translation docs/zh_CN: add infiniband sysfs translation docs/zh_CN: add infiniband opa_vnic translation docs/zh_CN: add infiniband ipoib translation ...

net/mlx5: E-switch, Add QoS tracepoints

2021-08-20T04:50:41+00:00

Add tracepoints to log QoS enabling/disabling/configuration for vports and rate groups. Signed-off-by: Dmytro Linkin Reviewed-by: Huy Nguyen Reviewed-by: Mark Bloch Reviewed-by: Saeed Mahameed

docs: networking: dpaa2: document mirroring support on the switch

2021-07-29T20:34:45+00:00

Document the mirroring capabilities of the dpaa2-switch driver, any restrictions that are imposed and some example commands. Signed-off-by: Ioana Ciornei Signed-off-by: David S. Miller

docs: networking: dpaa2: add documentation for the switch driver

2021-07-27T10:53:09+00:00

Add a documentation entry for the DPAA2 switch listing its requirements, features and some examples to go along them. Signed-off-by: Ioana Ciornei Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

docs: networking: dpaa2: fix chapter title format

2021-07-25T20:34:33+00:00

Fix the DPAA2 DPIO driver chapter title by adding the necessary overline. Without this, the index page of the DPAA2 documentation doesn't display properly. Fixes: d8e516bac73f ("soc: fsl: dpio: Convert DPIO documentation to .rst") Signed-off-by: Ioana Ciornei Link: https://lore.kernel.org/r/20210722100356.635078-5-ciorneiioana@gmail.com Signed-off-by: Jonathan Corbet

Merge tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2021-06-30T22:51:09+00:00

Pull networking updates from Jakub Kicinski: "Core: - BPF: - add syscall program type and libbpf support for generating instructions and bindings for in-kernel BPF loaders (BPF loaders for BPF), this is a stepping stone for signed BPF programs - infrastructure to migrate TCP child sockets from one listener to another in the same reuseport group/map to improve flexibility of service hand-off/restart - add broadcast support to XDP redirect - allow bypass of the lockless qdisc to improving performance (for pktgen: +23% with one thread, +44% with 2 threads) - add a simpler version of "DO_ONCE()" which does not require jump labels, intended for slow-path usage - virtio/vsock: introduce SOCK_SEQPACKET support - add getsocketopt to retrieve netns cookie - ip: treat lowest address of a IPv4 subnet as ordinary unicast address allowing reclaiming of precious IPv4 addresses - ipv6: use prandom_u32() for ID generation - ip: add support for more flexible field selection for hashing across multi-path routes (w/ offload to mlxsw) - icmp: add support for extended RFC 8335 PROBE (ping) - seg6: add support for SRv6 End.DT46 behavior - mptcp: - DSS checksum support (RFC 8684) to detect middlebox meddling - support Connection-time 'C' flag - time stamping support - sctp: packetization Layer Path MTU Discovery (RFC 8899) - xfrm: speed up state addition with seq set - WiFi: - hidden AP discovery on 6 GHz and other HE 6 GHz improvements - aggregation handling improvements for some drivers - minstrel improvements for no-ack frames - deferred rate control for TXQs to improve reaction times - switch from round robin to virtual time-based airtime scheduler - add trace points: - tcp checksum errors - openvswitch - action execution, upcalls - socket errors via sk_error_report Device APIs: - devlink: add rate API for hierarchical control of max egress rate of virtual devices (VFs, SFs etc.) - don't require RCU read lock to be held around BPF hooks in NAPI context - page_pool: generic buffer recycling New hardware/drivers: - mobile: - iosm: PCIe Driver for Intel M.2 Modem - support for Qualcomm MSM8998 (ipa) - WiFi: Qualcomm QCN9074 and WCN6855 PCI devices - sparx5: Microchip SparX-5 family of Enterprise Ethernet switches - Mellanox BlueField Gigabit Ethernet (control NIC of the DPU) - NXP SJA1110 Automotive Ethernet 10-port switch - Qualcomm QCA8327 switch support (qca8k) - Mikrotik 10/25G NIC (atl1c) Driver changes: - ACPI support for some MDIO, MAC and PHY devices from Marvell and NXP (our first foray into MAC/PHY description via ACPI) - HW timestamping (PTP) support: bnxt_en, ice, sja1105, hns3, tja11xx - Mellanox/Nvidia NIC (mlx5) - NIC VF offload of L2 bridging - support IRQ distribution to Sub-functions - Marvell (prestera): - add flower and match all - devlink trap - link aggregation - Netronome (nfp): connection tracking offload - Intel 1GE (igc): add AF_XDP support - Marvell DPU (octeontx2): ingress ratelimit offload - Google vNIC (gve): new ring/descriptor format support - Qualcomm mobile (rmnet & ipa): inline checksum offload support - MediaTek WiFi (mt76) - mt7915 MSI support - mt7915 Tx status reporting - mt7915 thermal sensors support - mt7921 decapsulation offload - mt7921 enable runtime pm and deep sleep - Realtek WiFi (rtw88) - beacon filter support - Tx antenna path diversity support - firmware crash information via devcoredump - Qualcomm WiFi (wcn36xx) - Wake-on-WLAN support with magic packets and GTK rekeying - Micrel PHY (ksz886x/ksz8081): add cable test support" * tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2168 commits) tcp: change ICSK_CA_PRIV_SIZE definition tcp_yeah: check struct yeah size at compile time gve: DQO: Fix off by one in gve_rx_dqo() stmmac: intel: set PCI_D3hot in suspend stmmac: intel: Enable PHY WOL option in EHL net: stmmac: option to enable PHY WOL with PMT enabled net: say "local" instead of "static" addresses in ndo_dflt_fdb_{add,del} net: use netdev_info in ndo_dflt_fdb_{add,del} ptp: Set lookup cookie when creating a PTP PPS source. net: sock: add trace for socket errors net: sock: introduce sk_error_report net: dsa: replay the local bridge FDB entries pointing to the bridge dev too net: dsa: ensure during dsa_fdb_offload_notify that dev_hold and dev_put are on the same dev net: dsa: include fdb entries pointing to bridge in the host fdb list net: dsa: include bridge addresses which are local in the host fdb list net: dsa: sync static FDB entries on foreign interfaces to hardware net: dsa: install the host MDB and FDB entries in the master's RX filter net: dsa: reference count the FDB addresses at the cross-chip notifier level net: dsa: introduce a separate cross-chip notifier type for host FDBs net: dsa: reference count the MDB entries at the cross-chip notifier level ...