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Date: Thu, 26 Jun 2014 11:19:01 +0300 From: "Victor Miasnikov" <vvm@....by> To: <linux-kernel@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, "Greg KH" <gregkh@...uxfoundation.org>, "Haiyang Zhang" <haiyangz@...rosoft.com> Cc: "Abhishek Gupta \(LIS\)" <abgupta@...rosoft.com>, "Bernhard Walle" <bernhard@...lle.de>, "Mathieu Simon" <mathieu.sim@...il.com>, Кулешов Андрей Анатольевич <KuleshovAA@...v-ex.ru>, "KY Srinivasan" <kys@...rosoft.com> Subject: Non-FIXed in Linux Kernel v3.14.8 2014-06-16 Fw: hyperv: Change the receive buffer size for legacy hosts Re: Regression in hyperv network driver in 3.14 Fw: Debian Bug#748609: ( 3.14-0 : Hyper-V netvsc no networking) Hi! 2014-03-09 https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/net/hyperv?id=99d3016de4f2a29635f5382b0e9bd0e5f2151487 hyperv: Change the receive buffer size for legacy hosts + Haiyang Zhang write on May 27, 2014 6:22 PM: I ( Haiyang Zhang) will ask the maintainer ( for backport id=99d3016de4f2a29635f5382b0e9bd0e5f2151487 ), see if it will be in next 3.14 update as well. + Haiyang Zhang on June 25, 2014 19:14 ( UTC+3) : I ( Haiyang Zhang) have requested that patch for stable branch, but . . . ( VVM: skipped by me) V.V.M.: Problem Non-FIXed in Linux Kernel v3.14.8 2014-06-16 :-( Reason? Roadmap? ( Without this patch ( i.e. in kernel v3.14 ) LANCard driver/.ko is simply not start in case VM with OS Linux on Hyper-V host with Win 2008 R2 ( Win 2012 R2 not affected) ) Best regards, Victor Miasnikov Blog: http://vvm.blog.tut.by/ P.S. About "rules": IMHO, In fact _all_ patch equal 16-1 = 15 :-) i.e. -#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */ +#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*15) /* 15MB */ ----- Original Message ----- From: Victor Miasnikov To: Haiyang Zhang; Abhishek Gupta (LIS) Cc: KY Srinivasan; Кулешов Андрей Анатольевич; Mathieu Simon; Bernhard Walle Sent: Wednesday, June 25, 2014 1:19 PM Subject: Non-FIXed in Linux Kernel v3.14.8 2014-06-16 Fw: hyperv: Change the receive buffer size for legacy hosts Re: Regression in hyperv network driver in 3.14 Fw: Debian Bug#748609: (linux-image-3.14-0.bpo.1-amd64: Hyper-V netvsc no networking) Hi! Problem Non-FIXed in Linux Kernel v3.14.8 2014-06-16 :-( Reason? Roadmap? . . . == cat /var/log/syslog hv_netvsc vmbus_0_9 (unregistered net_device): Unable to complete receive buffer initialization with NetVsp - status 2 hv_netvsc vmbus_0_9 (unregistered net_device): unable to connect to NetVSP - -22 hv_netvsc vmbus_0_9 (unregistered net_device): unable to add netvsc device (ret -22) hv_vmbus: probe failed for device vmbus_0_9 (-22) hv_netvsc: probe of vmbus_0_9 failed with error -22 == == It defines a NETVSC_RECEIVE_BUFFER_SIZE_LEGACY of 15MB instead of 16MB used on newer versions of this Hypervisor. Technically this also affects Jessie when running as guest on Windows Server 2008 R2. == == Yes, this commit is in stable tree: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/net/hyperv?id=99d3016de4f2a29635f5382b0e9bd0e5f2151487 hyperv: Change the receive buffer size for legacy hosts I will ask the maintainer, see if it will be in next 3.14 update as well. Thanks, - Haiyang == Best regards, Victor Miasnikov Blog: http://vvm.blog.tut.by/ P.S. History of problem: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=748609 == cat /var/log/syslog hv_netvsc vmbus_0_9 (unregistered net_device): Unable to complete receive buffer initialization with NetVsp - status 2 hv_netvsc vmbus_0_9 (unregistered net_device): unable to connect to NetVSP - -22 hv_netvsc vmbus_0_9 (unregistered net_device): unable to add netvsc device (ret -22) hv_vmbus: probe failed for device vmbus_0_9 (-22) hv_netvsc: probe of vmbus_0_9 failed with error -22 It defines a NETVSC_RECEIVE_BUFFER_SIZE_LEGACY of 15MB instead of 16MB used on newer versions of this Hypervisor. Technically this also affects Jessie when running as guest on Windows Server 2008 R2. == + ----- Original Message ----- From: "Haiyang Zhang" To: "Bernhard Walle" ; "KY Srinivasan" Cc: <linux-kernel@...r.kernel.org> Sent: Tuesday, May 27, 2014 6:22 PM Subject: RE: Regression in hyperv network driver in 3.14 > -----Original Message----- > From: Bernhard Walle > Sent: Tuesday, May 27, 2014 10:42 AM > To: KY Srinivasan > Cc: Haiyang Zhang; linux-kernel@...r.kernel.org > Subject: RE: Regression in hyperv network driver in 3.14 > > Am 2014-05-27 15:43, schrieb KY Srinivasan: > > >> Can I provide more information to track down the problem? > > > > This bug has been fixed upstream. The issue is with regards to the > > older hosts (ws2008 r2) not > > Being able to handle the larger receive buffer currently used. > > Can you point me to the commit that fixed the problem? Woudln't that > be something for -stable since the problem is still in 3.14.4. > Yes, this commit is in stable tree: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/net/hyperv?id=99d3016de4f2a29635f5382b0e9bd0e5f2151487 hyperv: Change the receive buffer size for legacy hosts I will ask the maintainer, see if it will be in next 3.14 update as well. Thanks, - Haiyang Nryvnz}zjvzz~zjyA -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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