nvme_sim: Connect to events broadcast with nvme_if

[imp]

Summary

Sponsored by: Netflix

[jhb]

sys/dev/nvme/nvme_sim.c

412

FWIW, in nvmf I just have a single namespace_changed callback. It parses the list of changed namespaces for the AEN and then calls nvmf_rescan_ns for each namespace. For the /dev/nvmeXnsY devices it does do some extra work to detect add vs remove vs change, but for the CAM SIM, it just always calls nvmf_sim_rescan_ns that just triggers an xpt_rescan for the namespace.

[imp]

sys/dev/nvme/nvme_sim.c

412

Yea. 'new' is called at startup, while my delta is called for the AER change event. I don't have a rm event yet.

I'm happy to tweak things, especially if an xpt_rescan does the right thing.

412

Also, that's how it is with these changes, but not set in stone if we can make things simpler.

[imp]

Update per review, add missing change