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    qeth: do not limit number of gso segments · 243f750f
    Ursula Braun 提交于
    To reduce the need of skb_linearize() calls, gso_max_segs of qeth
    net_devices had been limited according to the maximum number of qdio SBAL
    elements. But a gso segment cannot be larger than the mtu-size, while an
    SBAL element can contain up to 4096 bytes. The gso_max_segs limitation
    limits the maximum packet size given to the qeth driver. Performance
    measurements with tso-enabled qeth network interfaces and mtu-size 1500
    showed, that the disadvantage of smaller packets is much more severe than
    the advantage of fewer skb_linearize() calls.
    This patch gets rid of the gso_max_segs limitations in the qeth driver.
    Signed-off-by: NUrsula Braun <ubraun@linux.vnet.ibm.com>
    Reviewed-by: NThomas Richter <tmricht@linux.vnet.ibm.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    243f750f
qeth_l2_main.c 57.9 KB