K 10
svn:author
V 7
yongari
K 8
svn:date
V 27
2009-02-09T03:38:01.047381Z
K 7
svn:log
V 1116
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.

END