You have been subscribed to a public bug: == 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--- -- Ubuntu - ibmveth: abnormally large TCP MSS value caused a TCP session to hang with a zero window https://bugs.launchpad.net/bugs/1655420 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
