Fill in the options on the left the best you can. Remember to select add after each selection and then selct "show results" from the top of the page when you are done. After a quick look it looks like RHEL on HP Proliant is not directly supported. Recommend you call your NetApp SE for advise.
I'm still a little confused here. Basically, your FC HBA's require a basic driver. I assume that Linux has those kernel drivers and perhaps Qlogic has some proprietary drivers. This alone, however, is not going to make multipathing work. Multipathing requires some sort of a daemon to monitor at least some basic functionality of the "paths" between server and storage, just to know if they are working paths or not.. Now I have no clue on the present status of multipathing in the GNU kernel, but there seems to be some evidence on the net that it works, but has nothing directly to do with NetApp, per se, although you will need to download the FCP Host Utilities for Linux (RedHat) and read the instructions probably, to get it to work. It would seem a quick search on Google would have gotten you this much... Perhaps this will help: