Make the Endpoint fields accessible and the Gid optional

[YtvwlD]

I do have an existing C application I want to communicate with and I think it's not using global routing, so I have to get the (lid, qpn) information out of this library and into the other application (and back).

Because QueuePairEndpoint is already Serialize and Deserialize, I don't think that making the fields public has any serious implications (though adding getter functions and a new function might be nicer, idk).

[jonhoo]

Seems reasonable to me! Just a few smaller bits:

[codecov-commenter]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (e6fc6dd) 10.1% compared to head (5598ab8) 10.2%.

Additional details and impacted files

Files	Coverage Δ
ibverbs/src/lib.rs	8.5% <41.6%> (+0.1%)	⬆️

[jonhoo]

Looks like rustfmt also isn't happy with this line:

rust-ibverbs/ibverbs/src/lib.rs

Line 1410 in 53e1782

qpe.gid.as_mut().unwrap().raw = unsafe { std::mem::transmute([87_u64.to_be(), 192_u64.to_be()]) };

[YtvwlD]

Good points. I've modified the documentation and the line in the test.

[jonhoo]

Looks good to me, thanks!

[jonhoo]

Released as 0.7.1 🎉