Err. Let's try that again. I spent a bit of time thinking about a file format that would be more extensible, yet still be loadable into the kernel without having to parse it into new data structures in the kernel, i.e. be easy enough to read when needed. My considerations * must be extensible in some way * should be relatively dense/small to not use too much kernel memory * should still be reasonably easy to parse/read I came up with a file format that's similar to the existing regulatory.bin format, but with the following changes: * put the DFS region into a reg rule collection * put the frequency range and power rules directly into each reg rule (i.e. don't try to normalize them) * have a length field in the collection and rule structures so that we can extend them with new fields * use more compact pointers, i.e. u16 offsets, by aligning everything to 4 bytes and shifting the offsets by 2 bits, this allows for 256KiB database files which seems large enough More documentation is here: https://wireless.wiki.kernel.org/en/developers/todo-list/regdb-file -format I put together a small sample program to create such a file from db.txt (https://p.sipsolutions.net/1c42079f2e658a82.txt) and one to print such a file (https://p.sipsolutions.net/8c180172adbe0ad3.txt) Thoughts? johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
