From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Friesen Date: Thu, 28 Jan 2016 12:40:33 -0600 Subject: [Intel-wired-lan] anyone aware of problem with 82599ES stuck sending TX pause frames? Message-ID: <56AA60A1.7060408@windriver.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: Hi, We're running linux 3.10 with the 3.13.10-k ixgbe driver. We're seeing an intermittent issue with our 82599ES devices where they seem to occasionally get stuck sending TX pause frames. controller-1:~$ sudo ethtool -S eth26 | grep flow_control tx_flow_control_xon: 0 rx_flow_control_xon: 0 tx_flow_control_xoff: 3446364 rx_flow_control_xoff: 0 [wrsroot at controller-1 ~(keystone_admin)]$ sudo ethtool -S eth6 | grep flow_control tx_flow_control_xon: 103 rx_flow_control_xon: 0 tx_flow_control_xoff: 9174310 rx_flow_control_xoff: 0 Generally it seems to happen after receiving a relatively small number of packets (though the data set is small so this may be chance): 13: eth4.85 at eth4: mtu 9000 qdisc htb state UP mode DEFAULT link/ether 90:e2:ba:37:9b:ec brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 96681 212 0 0 0 192 TX: bytes packets errors dropped carrier collsns 77054616 136387 0 0 0 0 29: eth26: mtu 1500 qdisc htb state UP mode DEFAULT qlen 1000 link/ether 90:e2:ba:4f:9e:38 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 105471 213 0 0 0 129291 TX: bytes packets errors dropped carrier collsns 49801840 88058 0 0 0 0 ifdown/ifup seems to be sufficient to cause it to start behaving normally again. Anyone seen anything like this? Thanks, Chris