mirror of https://gitee.com/openkylin/linux.git
061c1a6e36
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2015-02-26 This series contains fixes for i40e and i40evf only. Alexey Khoroshilov found a possible leak of 'cmd_buf' when copy_from_user() failed in i40e_dbg_command_write(), so resolved by calling kfree(). Shannon provides a fix to ensure the shift and bitwise precedences do not work backwards for us by adding parans. Fixed the driver by preventing the driver from allowing stray interrupts or causing system logs from un-handled interrupts by combining the ICR0 shutdown with the standard interrupt shutdown and add the interrupt clearing to the PCI shutdown path. Fixed an issue where a NVM write times out before a transaction can complete, so Shannon added logic to make another attempt by reacquiring the semaphore, then retry the write, if the one retry fails, we will then give up. Adds checks to pointers before their use to ensure we do not try to dereference NULL pointers when returning values from the AdminQ calls. Akeem adds a check to bail out if the device is already down when checking for Tx hang subtask. Anjali fixes TSO with more than 8 frags per segment issue. The hardware has some limitations which the driver needs to adhere to: 1) no more than 8 descriptors per packet on the wire 2) no header can span more than 3 descriptors If one of these events happens, the hardware will generate an internal error and freeze the Tx queue, so Anjali fixes this by linearizes the skb to avoid these situations. Fixed an issue where the per Traffic Class queue count was higher than queues enabled, which will fix a warning with multiple function mode where systems regularly have more cores than vectors. Fixed TCP/IPv6 over VXLAN Tx checksum offload, where we were checking the outer protocol flags and deciding the flow for the inner header. Jesse fixes a race condition in the transmit hang detection. Before we were having issues of false Tx hang detection, no the driver makes more direct with the checks for progress forward by directly checking the head write back address and tail register when determining progress. This avoids Tx hangs where the software gets behind, because we are directly checking hardware state when determining a hang state. Neerav fixes the transmit ring Qset handle when DCB reconfigures. The issue was when DCB is reconfigured to a single traffic class (TC) and the driver did not reset the Tx ring Qset handle to correct the mapping, which caused the Tx queue to disable timeouts. Also as part of DCB reconfiguration flow if the Tx queue disable times out, then issue a PF reset to do some level of recovery. Mitch stops flow director on shutdown because, in some cases, the hardware would continue to try to access the FDIR ring after entering D3Hot state, which would cause either PCIe errors or NMIs, depending upon the system configuration. * NOTE * I have verified that this series of patches for net will not cause any merge issues when you sync up your net tree with your net-next tree. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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