bb252175df
Issue: ocs_fc(4) driver panics. It's induced by setting the port_state sysctl to offline, then online, then offline, then online, and so forth and so on in rapid succession. Reason: While we set the port_state to online fc discovery will start and OS is enumerating the target discs by calling ocs_action(), then set the port state to "offline" which deletes domain/sport/nodes. In ocs_action()->XPT_GET_TRAN_SETTINGS we are accessing the remote node which can be invalid to get the wwpn, wwnn and port. Fix: Removed accessing of remote node and domain in some ocs_action() cases. Populated the required values from ocs_fcport. This removes the dependency of node and domain structures while processing XPT_PATH_INQ and XPT_GET_TRAN_SETTINGS. We will invalidate the target entries after the device lost timeout(30 seconds). Approved by: ken, mav MFC after: 3 weeks
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