** Description changed: + [Impact] + We get reports that iscsi and spark tests fail on hns3 + + [Fix] + Cherry-pick/backport patches from upstream. + net: hns3: add 8 BD limit for tx flow + net: hns3: avoid mult + div op in critical data path + net: hns3: remove some ops in struct hns3_nic_ops + net: hns3: fix for not calculating tx bd num correctly + net: hns3: unify maybe_stop_tx for TSO and non-TSO case + net: hns3: add check for max TX BD num for tso and non-tso case + net: hns3: fix for TX queue not restarted problem + net: hns3: fix a use after free problem in hns3_nic_maybe_stop_tx() + + [Test] + No known way to reproduce it in our lab. Regression test only. + + [Regression Potential] + Patchset only affects hns3 driver. Minimal risk for other drivers and platform. + + [Bug Description] A single transmit packet can span up to 8 descriptors, TSO transmit packet can be stored up to 63 descriptors and each segment within the TSO should be spanned up to 8 descriptors. If the packet needs more than 8 BD, and the total size of every 7 continuous frags more than MSS, HW does not support it, and it need driver makes SKB Linearized. [Actual Results] iscsi and bigdata spark test OK [Expected Results] iscsi and bigdata spark test OK [Reproducibility] Inevitably [Additional information] Hardware: D06 Firmware: NA Kernel: NA DTS2018091810050 [Resolution] SW use skb_copy to merge frag; 51e8439f3496 net: hns3: add 8 BD limit for tx flow 5f543a54eec0 net: hns3: fix for not calculating tx bd num correctly
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859756 Title: [hns3-0115] add 8 BD limit for tx flow To manage notifications about this bug go to: https://bugs.launchpad.net/kunpeng920/+bug/1859756/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
