1e9fb89962
When mbuf chain is too long and device cannot handle that number of segments in DMA transaction, mbuf chain will be defragmented. Initially, driver was dropping all mbuf chains that were exceeding supported number of segments. Submitted by: Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon.com Inc. Differential revision: https://reviews.freebsd.org/D10923
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