K 10
svn:author
V 7
yongari
K 8
svn:date
V 27
2006-08-14T02:21:26.000000Z
K 7
svn:log
V 500
Make em(4) handle too many fragmented frame with m_defrag(9).
Previously em(4) requeued the failed mbuf chains from
bus_dmamap_load_mbuf_sg(9) failure to resend it later. However,
bus_dmamap_load_mbuf_sg(9) may never complete its request as the
fragmented frames can have more than EM_MAX_SCATTER segments.
To handle the above EFBIG case, defragment the frame with m_defrag(9)
and free the mbuf chain if it can't deframent the chain due to
resource shortage.

Reviewed by	glebius (with improvements)

END