Date: Sun, 25 Jun 2017 17:28:32 +0200 From: Ben RUBSON <ben.rubson@gmail.com> To: Ryan Stone <rysto32@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org>, "freebsd-scsi@freebsd.org" <freebsd-scsi@freebsd.org> Subject: Re: mbuf_jumbo_9k & iSCSI failing Message-ID: <E1618FE6-CA5A-432F-A345-AA5065B759C8@gmail.com> In-Reply-To: <CAFMmRNzo=xB8XF6SFD%2BwksmBYjRZ_peYjiPBCXNVyqP%2BdxnujQ@mail.gmail.com> References: <486A6DA0-54C8-40DF-8437-F6E382DA01A8@gmail.com> <6a31ef00-5f7a-d36e-d5e6-0414e8b813c7@selasky.org> <DB3PR05MB089A5789A0A619FA8B7CA36C36C0@DB3PR05MB089.eurprd05.prod.outlook.com> <613AFD8E-72B2-4E3F-9C70-1D1E43109B8A@gmail.com> <2c9a9c2652a74d8eb4b34f5a32c7ad5c@AM5PR0502MB2916.eurprd05.prod.outlook.com> <DB3PR05MB089011A41EF87A40C7AC741C36E0@DB3PR05MB089.eurprd05.prod.outlook.com> <F19B51C7-7DDD-4FAB-9091-0B7C8A7CE649@gmail.com> <52A2608C-A57E-4E75-A952-F4776BA23CA4@gmail.com> <9B507AA6-40FE-4B8D-853F-2A9422A2DF67@gmail.com> <CAFMmRNzo=xB8XF6SFD%2BwksmBYjRZ_peYjiPBCXNVyqP%2BdxnujQ@mail.gmail.com>
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> On 25 Jun 2017, at 17:14, Ryan Stone <rysto32@gmail.com> wrote: >=20 > Is this setup using the mlx4_en driver? If so, recent versions of = that driver has a regression when using MTUs greater than the page size = (4096 on i386/amd64). The bug will cause the card to drop packets when = the system is under memory pressure, and in certain causes the card can = get into a state when it is no longer able to receive packets. I am = working on a fix; I can post a patch when it's complete. Thank you very much for your feedback Ryan. Yes, my system is using mlx4_en driver, the one directly from FreeBSD = 11.0 sources tree. Any indicator I could catch to be sure I'm experiencing the issue you = are working on ? Sounds like anyway I may be suffering from it... Of course I would be glad to help testing your patch when it's complete. Thank you again, Ben
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