lkml.org 
[lkml]   [2021]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH net-next 0/2] Introducing support for DWC xpcs Energy Efficient Ethernet
    Date
    The goal of this patch set is to enable EEE in the xpcs so that when
    EEE is enabled, the MAC-->xpcs-->PHY have all the EEE related
    configurations enabled.

    Patch 1 adds the functions to enable EEE in the xpcs and sets it to
    transparent mode.
    Patch 2 adds the callbacks to configure the xpcs EEE mode.

    The results are tested by checking the lpi counters of the tx and rx
    path of the interface. When EEE is enabled, the lpi counters should
    increament as it enters and exits lpi states.

    host@EHL$ ethtool --show-eee enp0s30f4
    EEE Settings for enp0s30f4:
    EEE status: disabled
    Tx LPI: disabled
    Supported EEE link modes: 100baseT/Full
    1000baseT/Full
    Advertised EEE link modes: Not reported
    Link partner advertised EEE link modes: 100baseT/Full
    1000baseT/Full
    host@EHL$ ethtool -S enp0s30f4 | grep lpi
    irq_tx_path_in_lpi_mode_n: 0
    irq_tx_path_exit_lpi_mode_n: 0
    irq_rx_path_in_lpi_mode_n: 0
    irq_rx_path_exit_lpi_mode_n: 0
    host@EHL$ ethtool --set-eee enp0s30f4 eee on
    host@EHL$ [ 110.265154] intel-eth-pci 0000:00:1e.4 enp0s30f4: Link is Down
    [ 112.315155] intel-eth-pci 0000:00:1e.4 enp0s30f4: Link is Up - 1Gbps/Full - flow control off
    [ 112.324612] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s30f4: link becomes ready
    host@EHL$ ethtool --show-eee enp0s30f4
    EEE Settings for enp0s30f4:
    EEE status: enabled - active
    Tx LPI: 1000000 (us)
    Supported EEE link modes: 100baseT/Full
    1000baseT/Full
    Advertised EEE link modes: 100baseT/Full
    1000baseT/Full
    Link partner advertised EEE link modes: 100baseT/Full
    1000baseT/Full
    host@EHL$ ethtool -S enp0s30f4 | grep lpi
    irq_tx_path_in_lpi_mode_n: 6
    irq_tx_path_exit_lpi_mode_n: 5
    irq_rx_path_in_lpi_mode_n: 7
    irq_rx_path_exit_lpi_mode_n: 6
    host@EHL$ ping 192.168.1.1
    PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
    64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.02 ms
    64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.510 ms
    64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.489 ms
    64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.484 ms
    64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.504 ms
    64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=0.466 ms
    64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=0.529 ms
    64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=0.519 ms
    64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=0.518 ms
    64 bytes from 192.168.1.1: icmp_seq=10 ttl=64 time=0.501 ms

    --- 192.168.1.1 ping statistics ---
    10 packets transmitted, 10 received, 0% packet loss, time 9216ms
    rtt min/avg/max/mdev = 0.466/0.553/1.018/0.155 ms
    host@EHL$ ethtool -S enp0s30f4 | grep lpi
    irq_tx_path_in_lpi_mode_n: 22
    irq_tx_path_exit_lpi_mode_n: 21
    irq_rx_path_in_lpi_mode_n: 21
    irq_rx_path_exit_lpi_mode_n: 20

    Michael Sit Wei Hong (2):
    net: pcs: Introducing support for DWC xpcs Energy Efficient Ethernet
    net: stmmac: Add callbacks for DWC xpcs Energy Efficient Ethernet

    .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 11 ++++
    drivers/net/ethernet/stmicro/stmmac/hwif.h | 2 +
    .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 6 +++
    drivers/net/pcs/pcs-xpcs.c | 51 +++++++++++++++++++
    include/linux/pcs/pcs-xpcs.h | 2 +
    include/linux/stmmac.h | 1 +
    6 files changed, 73 insertions(+)

    --
    2.17.1

    \
     
     \ /
      Last update: 2021-04-29 10:53    [W:2.843 / U:0.576 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site