Date: Mon, 9 Feb 2009 03:38:01 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/fxp if_fxp.c if_fxpvar.h Message-ID: <200902090338.n193cBO9087528@repoman.freebsd.org>
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yongari 2009-02-09 03:38:01 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/dev/fxp if_fxp.c if_fxpvar.h
Log:
SVN rev 188370 on 2009-02-09 03:38:01Z by yongari
MFC r185285:
- Allow fxp_encap() enqueue failed transmissions and set
IFF_DRV_OACTIVE to note resource shortage to upper stack.
- Don't count number of mbuf chains. Default 32 DMA segments for a
frame is enough for most cases. If bus_dmamap_mbuf_sg fails use
m_collapse(9) to collapse the mbuf chain instead of relying on
expensive m_defrag(9).
- Move bpf handling to fxp_start_body() which is supposed to be
more appropriate place.
- Always arm watchdog timer whenever a new Tx request is made.
Previously fxp(4) used to arm watchdog timer only when
FXP_CXINT_THRESH-th Tx request is made. Because fxp(4) does not
rely on Tx interrupt to reclaim transmitted mbufs it's better to
arm watchdog timer to detect potential lockups.
- Add more aggresive Tx buffer reclaiming in fxp_start_body to make
room for new Tx requests. Since fxp(4) does not request Tx
completion interrupt for every frames it's necessary to clean
TXCBs in advance to saturate link.
- Make fxp(4) try to start more packets transmitting regardless of
interrupt type in fxp_intr_body.
Revision Changes Path
1.266.2.5 +70 -70 src/sys/dev/fxp/if_fxp.c
1.40.2.2 +1 -0 src/sys/dev/fxp/if_fxpvar.h
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