Linux Networking Documentation

Contents:

• netdev FAQ
  • Q: What is netdev?
  • Q: How do the changes posted to netdev make their way into Linux?
  • Q: How often do changes from these trees make it to the mainline Linus tree?
  • Q: How do I indicate which tree (net vs. net-next) my patch should be in?
  • Q: I sent a patch and I’m wondering what happened to it?
  • Q: The above only says “Under Review”. How can I find out more?
  • Q: I submitted multiple versions of the patch series
  • Q: I made changes to only a few patches in a patch series should I resend only those changed?
  • Q: I submitted multiple versions of a patch series and it looks like a version other than the last one has been accepted, what should I do?
  • Q: How can I tell what patches are queued up for backporting to the various stable releases?
  • Q: I see a network patch and I think it should be backported to stable.
  • Q: I have created a network patch and I think it should be backported to stable.
  • Q: Are all networking bug fixes backported to all stable releases?
  • Q: Is the comment style convention different for the networking content?
  • Q: I am working in existing code that has the former comment style and not the latter.
  • Q: I found a bug that might have possible security implications or similar.
  • Q: What level of testing is expected before I submit my change?
  • Q: Any other tips to help ensure my net/net-next patch gets OK’d?
• AF_XDP
  • Overview
  • Concepts
  • Libbpf
  • XSKMAP / BPF_MAP_TYPE_XSKMAP
  • Configuration Flags and Socket Options
  • Usage
  • Sample application
  • FAQ
  • Credits
• Bare UDP Tunnelling Module Documentation
  • Special Handling
  • Usage
• batman-adv
  • Configuration
  • Usage
  • Logging/Debugging
  • batctl
  • Contact
• SocketCAN - Controller Area Network
  • Overview / What is SocketCAN
  • Motivation / Why Using the Socket API
  • SocketCAN Concept
  • How to use SocketCAN
  • SocketCAN Core Module
  • CAN Network Drivers
  • SocketCAN Resources
  • Credits
• The UCAN Protocol
  • USB Endpoints
  • CONTROL Messages
  • IN Message Format
  • OUT Message Format
  • CAN Error Handling
  • Example Conversation
• Vendor Device Drivers
  • DPAA2 Documentation
  • Linux Base Driver for the Intel(R) PRO/100 Family of Adapters
  • Linux Base Driver for Intel(R) Ethernet Network Connection
  • Linux Driver for Intel(R) Ethernet Network Connection
  • Linux Base Driver for Intel(R) Ethernet Multi-host Controller
  • Linux Base Driver for Intel(R) Ethernet Network Connection
  • Linux Base Virtual Function Driver for Intel(R) 1G Ethernet
  • Linux Base Driver for 10 Gigabit Intel(R) Ethernet Network Connection
  • Linux Base Driver for the Intel(R) Ethernet 10 Gigabit PCI Express Adapters
  • Linux Base Virtual Function Driver for Intel(R) 10G Ethernet
  • Linux Base Driver for the Intel(R) Ethernet Controller 700 Series
  • Linux Base Driver for Intel(R) Ethernet Adaptive Virtual Function
  • Linux Base Driver for the Intel(R) Ethernet Connection E800 Series
  • Linux kernel driver for Compute Engine Virtual Ethernet (gve):
  • Marvell OcteonTx2 RVU Kernel Drivers
  • Mellanox ConnectX(R) mlx5 core VPI Network Driver
  • Netronome Flow Processor (NFP) Kernel Drivers
  • Linux Driver for the Pensando(R) Ethernet adapter family
  • Linux Driver for the Synopsys(R) Ethernet Controllers “stmmac”
• Distributed Switch Architecture
  • Architecture
  • Broadcom RoboSwitch Ethernet switch driver
  • Broadcom Starfighter 2 Ethernet switch driver
  • LAN9303 Ethernet switch driver
  • NXP SJA1105 switch driver
  • DSA switch configuration from userspace
• Linux Devlink Documentation
  • Interface documentation
  • Driver-specific documentation
• Netlink interface for ethtool
  • Basic information
  • Conventions
  • Request header
  • Bit sets
  • List of message types
  • STRSET_GET
  • LINKINFO_GET
  • LINKINFO_SET
  • LINKMODES_GET
  • LINKMODES_SET
  • LINKSTATE_GET
  • DEBUG_GET
  • DEBUG_SET
  • WOL_GET
  • WOL_SET
  • FEATURES_GET
  • FEATURES_SET
  • PRIVFLAGS_GET
  • PRIVFLAGS_SET
  • RINGS_GET
  • RINGS_SET
  • CHANNELS_GET
  • CHANNELS_SET
  • COALESCE_GET
  • COALESCE_SET
  • PAUSE_GET
  • PAUSE_SET
  • EEE_GET
  • EEE_SET
  • TSINFO_GET
  • Request translation
• IEEE 802.15.4 Developer’s Guide
  • Introduction
  • Socket API
  • 6LoWPAN Linux implementation
  • Drivers
  • Device drivers API
• J1939 Documentation
  • Overview / What Is J1939
  • Motivation
  • J1939 concepts
  • How to Use J1939
• Linux Networking and Network Devices APIs
  • Linux Networking
  • Network device support
• Z8530 Programming Guide
  • Introduction
  • Driver Modes
  • Using the Z85230 driver
  • Attaching Network Interfaces
  • Configuring And Activating The Port
  • Network Layer Functions
  • Porting The Z8530 Driver
  • Known Bugs And Assumptions
  • Public Functions Provided
  • Internal Functions
• MSG_ZEROCOPY
  • Intro
  • Interface
  • Implementation
  • Testing
• FAILOVER
  • Overview
• Net DIM - Generic Network Dynamic Interrupt Moderation
  • Assumptions
  • Introduction
  • Net DIM Algorithm
  • Registering a Network Device to DIM
  • Example
  • Dynamic Interrupt Moderation (DIM) library API
• NET_FAILOVER
  • Overview
  • virtio-net accelerated datapath: STANDBY mode
  • Live Migration of a VM with SR-IOV VF & virtio-net in STANDBY mode
• PHY Abstraction Layer
  • Purpose
  • The MDIO bus
  • (RG)MII/electrical interface considerations
  • Connecting to a PHY
  • Letting the PHY Abstraction Layer do Everything
  • PHY interface modes
  • Pause frames / flow control
  • Keeping Close Tabs on the PAL
  • Doing it all yourself
  • PHY Device Drivers
  • Board Fixups
  • Standards
• phylink
  • Overview
  • Modes of operation
  • Rough guide to converting a network driver to sfp/phylink
• IP-Aliasing
  • Alias creation
  • Alias deletion
  • Alias (re-)configuring
  • Relationship with main device
• Ethernet Bridging
• SNMP counter
  • General IPv4 counters
  • ICMP counters
  • General TCP counters
  • TCP Fast Open
  • TCP Fast Path
  • TCP abort
  • TCP Hybrid Slow Start
  • TCP retransmission and congestion control
  • DSACK
  • invalid SACK and DSACK
  • SACK shift
  • TCP out of order
  • TCP PAWS
  • TCP ACK skip
  • TCP receive window
  • Delayed ACK
  • Tail Loss Probe (TLP)
  • TCP Fast Open description
  • SYN cookies
  • Challenge ACK
  • prune
  • examples
• Checksum Offloads
  • Introduction
  • TX Checksum Offload
  • LCO: Local Checksum Offload
  • RCO: Remote Checksum Offload
• Segmentation Offloads
  • Introduction
  • TCP Segmentation Offload
  • UDP Fragmentation Offload
  • IPIP, SIT, GRE, UDP Tunnel, and Remote Checksum Offloads
  • Generic Segmentation Offload
  • Generic Receive Offload
  • Partial Generic Segmentation Offload
  • SCTP acceleration with GSO
• Scaling in the Linux Networking Stack
  • Introduction
  • RSS: Receive Side Scaling
  • RPS: Receive Packet Steering
  • RFS: Receive Flow Steering
  • Accelerated RFS
  • XPS: Transmit Packet Steering
  • Per TX Queue rate limitation
  • Further Information
• Kernel TLS
  • Overview
  • User interface
  • Statistics
• Kernel TLS offload
  • Kernel TLS operation
  • Device configuration
  • Normal operation
  • Resync handling
  • Error handling
  • Performance metrics
  • Statistics
  • Notable corner cases, exceptions and additional requirements
• Linux NFC subsystem
  • Architecture overview
  • Device Driver Interface
  • Userspace interface
• Netdev private dataroom for 6lowpan interfaces