silby a725b928c5 Fix up callers of xl_encap so that they handle a failure response
properly (likely due to mbuf exhaustion.)  Previously, the driver
got somewhat wedged.

Also, remove the annoying messages printed every time xl_encap
couldn't allocate a mbuf; they served no useful purpose, and just made
an mbuf exhaustion situation more annoying.

MFC after:	1 week
2003-04-08 01:05:54 +00:00
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