Date: Mon, 14 Aug 2006 02:21:26 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/em if_em.c Message-ID: <200608140221.k7E2LQwW008604@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
yongari 2006-08-14 02:21:26 UTC
FreeBSD src repository
Modified files:
sys/dev/em if_em.c
Log:
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)
Revision Changes Path
1.130 +33 -12 src/sys/dev/em/if_em.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200608140221.k7E2LQwW008604>