Public bug reported: == Comment: #0 - THOMAS L. FALCON - 2017-01-10 11:54:24 ==
This bug is being mirrored for any distributions that include ibmveth large send/receive support. In short, any distribution with ibmveth v1.05 will be affected (releases 14.04.5/Wily+) 2 upstream commits: 1. Set GSO size and type https://github.com/torvalds/linux/commit/7b5967389f5a8dfb9d32843830f5e2717e20995d 2. set GSO segments https://github.com/torvalds/linux/commit/94acf164dc8f1184e8d0737be7125134c2701dbe A VIOS fix is needed as well. ---Problem Description--- When ibmveth interface on a PowerVM logical partition received a large, aggregated packet from firmware, the gso fields in the socket buffer shared info were not filled in correctly. This surfaced in a bug where the TCP rx window calculation algorithm returned a Zero Window even when there was available space. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-150410 severity-critical targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-150410 severity-critical targetmilestone-inin--- ** Changed in: ubuntu Assignee: (unassigned) => Taco Screen team (taco-screen-team) ** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1655420 Title: Ubuntu - ibmveth: abnormally large TCP MSS value caused a TCP session to hang with a zero window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655420/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
