cvs commit: src/sys/dev/em if_em.c
yongari at FreeBSD.org
Mon Aug 14 02:21:27 UTC 2006
yongari 2006-08-14 02:21:26 UTC
FreeBSD src repository
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
Reviewed by glebius (with improvements)
Revision Changes Path
1.130 +33 -12 src/sys/dev/em/if_em.c
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