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📄 DEVLINK(8)

Linux

DEVLINK(8)

📝 NAME

devlink - Devlink tool

🚀 Quick Reference

Use Case	Command	Description
📋 Show all devlink devices	devlink dev show	Display all devlink-capable devices and their attributes
📋 Show devlink ports	devlink port show	List all devlink ports and their configurations
📡 Monitor netlink messages	devlink monitor	Watch for devlink netlink events in real-time
💾 View shared buffer config	devlink sb show	Display shared buffer pool and threshold settings
🔧 View resource configuration	devlink resource show	Show device resource tree (e.g. SR-IOV, memory pools)
🗄️ Access address regions	devlink region show	List and dump devlink address regions for debugging
🏥 Show health reporters	devlink health show	Display health monitoring state and trigger recovery
🪤 Show trap configuration	devlink trap show	List hardware trap groups and packet trap actions
📄 JSON output	devlink -j dev show	Output device information in JSON format
📄 Pretty JSON output	devlink -j -p dev show	Output device information in pretty-printed JSON
📦 Batch mode	devlink -b filename	Execute commands from a file
ℹ️ Get help for a command	devlink dev help	Show help for the dev object

📋 SYNOPSIS

devlink [ OPTIONS ] { dev|port|monitor|sb|resource|region|health|trap } { COMMAND | help }

devlink [ -force ] -batch filename

⚙️ OPTIONS

🔹 -V, --Version

Print the version of the devlink utility and exit.

🔹 -b, -batch <FILENAME>

Read commands from provided file or standard input and invoke them. First failure will cause termination of devlink.

🔹 -force

Don't terminate devlink on errors in batch mode. If there were any errors during execution of the commands, the application return code will be non zero.

🔹 -n, --no-nice-names

Turn off printing out nice names, for example netdevice ifnames instead of devlink port identification.

🔹 -j, --json

Generate JSON output.

🔹 -p, --pretty

When combined with -j generate a pretty JSON output.

🔹 -v, --verbose

Turn on verbose output.

🔹 -s, --statistics

Output statistics.

🔹 -N, -Netns <NETNSNAME>

Switches to the specified network namespace.

🔹 -i, --iec

Print human readable rates in IEC units (e.g. 1Ki = 1024).

📦 OBJECT

🔹 dev

devlink device.

🔹 port

devlink port.

🔹 monitor

watch for netlink messages.

🔹 sb

devlink shared buffer configuration.

🔹 resource

devlink device resource configuration.

🔹 region

devlink address region access

🔹 health

devlink reporting and recovery

🔹 trap

devlink trap configuration

💬 COMMAND

Specifies the action to perform on the object. The set of possible actions depends on the object type. As a rule, it is possible to show (or list) objects, but some objects do not allow all of these operations or have some additional commands. The help command is available for all objects. It prints out a list of available commands and argument syntax conventions.

If no command is given, some default command is assumed. Usually it is list or, if the objects of this class cannot be listed, help.

🚪 EXIT STATUS

Exit status is 0 if command was successful or a positive integer upon failure.

📚 SEE ALSO

devlink-dev(8), devlink-port(8), devlink-monitor(8), devlink-sb(8), devlink-resource(8), de‑vlink-region(8), devlink-health(8), devlink-trap(8),

🐛 REPORTING BUGS

Report any bugs to the Network Developers mailing list <netdev AT vger.org> where the development and maintenance is primarily done. You do not have to be subscribed to the list to send a message there.

👤 AUTHOR

Jiri Pirko <jiri AT mellanox.com>

📄 DEVLINK(8) 📝 NAME 🚀 Quick Reference 📋 SYNOPSIS ⚙️ OPTIONS 🚪 EXIT STATUS 📚 SEE ALSO 🐛 REPORTING BUGS 👤 AUTHOR