e1000e: 82574/82583 performance improvement
Increasing the transmit fifo by 4K (by decreasing the receive fifo size specified in .pba by the same amount) increases Tx performance. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Emil Tantilov <emil.s.tantilov@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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@ -2005,7 +2005,7 @@ struct e1000_info e1000_82574_info = {
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| FLAG_HAS_AMT
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| FLAG_HAS_CTRLEXT_ON_LOAD,
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.flags2 = FLAG2_CHECK_PHY_HANG,
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.pba = 36,
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.pba = 32,
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.max_hw_frame_size = DEFAULT_JUMBO,
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.get_variants = e1000_get_variants_82571,
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.mac_ops = &e82571_mac_ops,
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@ -2022,7 +2022,7 @@ struct e1000_info e1000_82583_info = {
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| FLAG_HAS_SMART_POWER_DOWN
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| FLAG_HAS_AMT
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| FLAG_HAS_CTRLEXT_ON_LOAD,
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.pba = 36,
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.pba = 32,
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.max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN,
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.get_variants = e1000_get_variants_82571,
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.mac_ops = &e82571_mac_ops,
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