Feature #41
Provide a method for configuring network interfaces from userspace
| Status: | New | Start: | 08/17/2009 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned to: |  Matthew Iselin |
% Done: | 0% |
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| Category: | Native | Spent time: | - | |
| Target version: | - |
Description
I'd like to see an ifconfig-like program to configure network interfaces live, and to view their IP configuration (so you know their IP on the network).
History
Updated by Matthew Iselin 10 months ago
The "best way" for this to be done would be:
- Implement a new pedigree-c system call, pedigree_get_net_info, that takes an integer parameter and a pointer to a block of memory. The system call will fill in the given block of memory with a known structure containing the IP addresses and statistics for the network interface (where 0 is the first network device in the system, 1 is the next, and so on).
- Implement a wrapper in the native subsystem that provides a decent way of accessing the data in that block of memory (and ideally hides the fact that a block of memory is passed around). It's probably prudent to use inet_* functions here to convert IPv4 addresses from 32-bit integers to their string representation, rather than attempting to bring IpAddress from the kernel across (as it would need to be maintained).
- Implement a program in userspace which uses the native wrapper to get network information about network cards in the system. Perhaps it should take a parameter that shows just one card, and if no parameters are given, it enumerates every card and displays all of them.
The status-server module dumps information about network interfaces via HTTP. This is at src/modules/system/status_server. It might be a good place to start to figure out how to get the information about network interfaces for converting into a pedigree-c system call.